ls: format opt

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

builder/builder.go

@@ -2,9 +2,12 @@ package builder
 
 import (
 	"context"
+	"encoding/json"
 	"os"
 	"sort"
+	"strings"
 	"sync"
+	"time"
 
 	"github.com/docker/buildx/driver"
 	"github.com/docker/buildx/store"
@@ -247,6 +250,28 @@ func (b *Builder) Factory(ctx context.Context, dialMeta map[string][]string) (_
 	return b.driverFactory.Factory, err
 }
 
+func (b *Builder) MarshalJSON() ([]byte, error) {
+	var berr string
+	if b.err != nil {
+		berr = strings.TrimSpace(b.err.Error())
+	}
+	return json.Marshal(struct {
+		Name         string
+		Driver       string
+		LastActivity time.Time `json:",omitempty"`
+		Dynamic      bool
+		Nodes        []Node
+		Err          string `json:",omitempty"`
+	}{
+		Name:         b.Name,
+		Driver:       b.Driver,
+		LastActivity: b.LastActivity,
+		Dynamic:      b.Dynamic,
+		Nodes:        b.nodes,
+		Err:          berr,
+	})
+}
+
 // GetBuilders returns all builders
 func GetBuilders(dockerCli command.Cli, txn *store.Txn) ([]*Builder, error) {
 	storeng, err := txn.List()

builder/node.go

@@ -2,8 +2,11 @@ package builder
 
 import (
 	"context"
+	"encoding/json"
 	"sort"
+	"strings"
 
+	"github.com/containerd/containerd/platforms"
 	"github.com/docker/buildx/driver"
 	ctxkube "github.com/docker/buildx/driver/kubernetes/context"
 	"github.com/docker/buildx/store"
@@ -199,6 +202,51 @@ func (b *Builder) LoadNodes(ctx context.Context, opts ...LoadNodesOption) (_ []N
 	return b.nodes, nil
 }
 
+func (n *Node) MarshalJSON() ([]byte, error) {
+	var status string
+	if n.DriverInfo != nil {
+		status = n.DriverInfo.Status.String()
+	}
+	var nerr string
+	if n.Err != nil {
+		status = "error"
+		nerr = strings.TrimSpace(n.Err.Error())
+	}
+	var pp []string
+	for _, p := range n.Platforms {
+		pp = append(pp, platforms.Format(p))
+	}
+	return json.Marshal(struct {
+		Name        string
+		Endpoint    string
+		Flags       []string           `json:",omitempty"`
+		DriverOpts  map[string]string  `json:",omitempty"`
+		Files       map[string][]byte  `json:",omitempty"`
+		Status      string             `json:",omitempty"`
+		ProxyConfig map[string]string  `json:",omitempty"`
+		Version     string             `json:",omitempty"`
+		Err         string             `json:",omitempty"`
+		IDs         []string           `json:",omitempty"`
+		Platforms   []string           `json:",omitempty"`
+		GCPolicy    []client.PruneInfo `json:",omitempty"`
+		Labels      map[string]string  `json:",omitempty"`
+	}{
+		Name:        n.Name,
+		Endpoint:    n.Endpoint,
+		Flags:       n.Flags,
+		DriverOpts:  n.DriverOpts,
+		Files:       n.Files,
+		Status:      status,
+		ProxyConfig: n.ProxyConfig,
+		Version:     n.Version,
+		Err:         nerr,
+		IDs:         n.IDs,
+		Platforms:   pp,
+		GCPolicy:    n.GCPolicy,
+		Labels:      n.Labels,
+	})
+}
+
 func (n *Node) loadData(ctx context.Context) error {
 	if n.Driver == nil {
 		return nil

commands/ls.go

@@ -2,25 +2,41 @@ package commands
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
-	"io"
+	"sort"
 	"strings"
-	"text/tabwriter"
 	"time"
 
 	"github.com/docker/buildx/builder"
+	"github.com/docker/buildx/store"
 	"github.com/docker/buildx/store/storeutil"
 	"github.com/docker/buildx/util/cobrautil"
 	"github.com/docker/buildx/util/cobrautil/completion"
 	"github.com/docker/buildx/util/platformutil"
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/command/formatter"
 	"github.com/moby/buildkit/util/appcontext"
 	"github.com/spf13/cobra"
 	"golang.org/x/sync/errgroup"
 )
 
+const (
+	lsNameNodeHeader       = "NAME/NODE"
+	lsDriverEndpointHeader = "DRIVER/ENDPOINT"
+	lsStatusHeader         = "STATUS"
+	lsLastActivityHeader   = "LAST ACTIVITY"
+	lsBuildkitHeader       = "BUILDKIT"
+	lsPlatformsHeader      = "PLATFORMS"
+
+	lsIndent = ` \_ `
+
+	lsDefaultTableFormat = "table {{.Name}}\t{{.DriverEndpoint}}\t{{.Status}}\t{{.Buildkit}}\t{{.Platforms}}"
+)
+
 type lsOptions struct {
+	format string
 }
 
 func runLs(dockerCli command.Cli, in lsOptions) error {
@@ -59,22 +75,9 @@ func runLs(dockerCli command.Cli, in lsOptions) error {
 		return err
 	}
 
-	w := tabwriter.NewWriter(dockerCli.Out(), 0, 0, 1, ' ', 0)
-	fmt.Fprintf(w, "NAME/NODE\tDRIVER/ENDPOINT\tSTATUS\tBUILDKIT\tPLATFORMS\n")
-
-	printErr := false
-	for _, b := range builders {
-		if current.Name == b.Name {
-			b.Name += " *"
-		}
-		if ok := printBuilder(w, b); !ok {
-			printErr = true
-		}
-	}
-
-	w.Flush()
-
-	if printErr {
+	if hasErrors, err := lsPrint(dockerCli, current, builders, in.format); err != nil {
+		return err
+	} else if hasErrors {
 		_, _ = fmt.Fprintf(dockerCli.Err(), "\n")
 		for _, b := range builders {
 			if b.Err() != nil {
@@ -92,31 +95,6 @@ func runLs(dockerCli command.Cli, in lsOptions) error {
 	return nil
 }
 
-func printBuilder(w io.Writer, b *builder.Builder) (ok bool) {
-	ok = true
-	var err string
-	if b.Err() != nil {
-		ok = false
-		err = "error"
-	}
-	fmt.Fprintf(w, "%s\t%s\t%s\t\t\n", b.Name, b.Driver, err)
-	if b.Err() == nil {
-		for _, n := range b.Nodes() {
-			var status string
-			if n.DriverInfo != nil {
-				status = n.DriverInfo.Status.String()
-			}
-			if n.Err != nil {
-				ok = false
-				fmt.Fprintf(w, "  %s\t%s\t%s\t\t\n", n.Name, n.Endpoint, "error")
-			} else {
-				fmt.Fprintf(w, "  %s\t%s\t%s\t%s\t%s\n", n.Name, n.Endpoint, status, n.Version, strings.Join(platformutil.FormatInGroups(n.Node.Platforms, n.Platforms), ", "))
-			}
-		}
-	}
-	return
-}
-
 func lsCmd(dockerCli command.Cli) *cobra.Command {
 	var options lsOptions
 
@@ -130,8 +108,170 @@ func lsCmd(dockerCli command.Cli) *cobra.Command {
 		ValidArgsFunction: completion.Disable,
 	}
 
+	flags := cmd.Flags()
+	flags.StringVar(&options.format, "format", formatter.TableFormatKey, "Format the output")
+
 	// hide builder persistent flag for this command
 	cobrautil.HideInheritedFlags(cmd, "builder")
 
 	return cmd
 }
+
+func lsPrint(dockerCli command.Cli, current *store.NodeGroup, builders []*builder.Builder, format string) (hasErrors bool, _ error) {
+	if format == formatter.TableFormatKey {
+		format = lsDefaultTableFormat
+	}
+
+	ctx := formatter.Context{
+		Output: dockerCli.Out(),
+		Format: formatter.Format(format),
+	}
+
+	sort.SliceStable(builders, func(i, j int) bool {
+		ierr := builders[i].Err() != nil
+		jerr := builders[j].Err() != nil
+		if ierr && !jerr {
+			return false
+		} else if !ierr && jerr {
+			return true
+		}
+		return i < j
+	})
+
+	render := func(format func(subContext formatter.SubContext) error) error {
+		for _, b := range builders {
+			if err := format(&lsContext{
+				Builder: &lsBuilder{
+					Builder: b,
+					Current: b.Name == current.Name,
+				},
+				format: ctx.Format,
+			}); err != nil {
+				return err
+			}
+			if b.Err() != nil {
+				if ctx.Format.IsTable() {
+					hasErrors = true
+				}
+				continue
+			}
+			for _, n := range b.Nodes() {
+				if n.Err != nil {
+					if ctx.Format.IsTable() {
+						hasErrors = true
+					}
+				}
+				if err := format(&lsContext{
+					format: ctx.Format,
+					Builder: &lsBuilder{
+						Builder: b,
+						Current: b.Name == current.Name,
+					},
+					node: n,
+				}); err != nil {
+					return err
+				}
+			}
+		}
+		return nil
+	}
+
+	lsCtx := lsContext{}
+	lsCtx.Header = formatter.SubHeaderContext{
+		"Name":           lsNameNodeHeader,
+		"DriverEndpoint": lsDriverEndpointHeader,
+		"LastActivity":   lsLastActivityHeader,
+		"Status":         lsStatusHeader,
+		"Buildkit":       lsBuildkitHeader,
+		"Platforms":      lsPlatformsHeader,
+	}
+
+	return hasErrors, ctx.Write(&lsCtx, render)
+}
+
+type lsBuilder struct {
+	*builder.Builder
+	Current bool
+}
+
+type lsContext struct {
+	formatter.HeaderContext
+	Builder *lsBuilder
+
+	format formatter.Format
+	node   builder.Node
+}
+
+func (c *lsContext) MarshalJSON() ([]byte, error) {
+	return json.Marshal(c.Builder)
+}
+
+func (c *lsContext) Name() string {
+	if c.node.Name == "" {
+		name := c.Builder.Name
+		if c.Builder.Current && c.format.IsTable() {
+			name += "*"
+		}
+		return name
+	}
+	if c.format.IsTable() {
+		return lsIndent + c.node.Name
+	}
+	return c.node.Name
+}
+
+func (c *lsContext) DriverEndpoint() string {
+	if c.node.Name == "" {
+		return c.Builder.Driver
+	}
+	if c.format.IsTable() {
+		return lsIndent + c.node.Endpoint
+	}
+	return c.node.Endpoint
+}
+
+func (c *lsContext) LastActivity() string {
+	if c.node.Name != "" || c.Builder.LastActivity.IsZero() {
+		return ""
+	}
+	return c.Builder.LastActivity.UTC().Format(time.RFC3339)
+}
+
+func (c *lsContext) Status() string {
+	if c.node.Name == "" {
+		if c.Builder.Err() != nil {
+			return "error"
+		}
+		return ""
+	}
+	if c.node.Err != nil {
+		return "error"
+	}
+	if c.node.DriverInfo != nil {
+		return c.node.DriverInfo.Status.String()
+	}
+	return ""
+}
+
+func (c *lsContext) Buildkit() string {
+	if c.node.Name == "" {
+		return ""
+	}
+	return c.node.Version
+}
+
+func (c *lsContext) Platforms() string {
+	if c.node.Name == "" {
+		return ""
+	}
+	return strings.Join(platformutil.FormatInGroups(c.node.Node.Platforms, c.node.Platforms), ", ")
+}
+
+func (c *lsContext) Error() string {
+	if c.node.Name != "" && c.node.Err != nil {
+		return c.node.Err.Error()
+	} else if err := c.Builder.Err(); err != nil {
+		return err.Error()
+	}
+	return ""
+}

docs/reference/buildx_ls.md

@@ -7,23 +7,78 @@ docker buildx ls
 <!---MARKER_GEN_START-->
 List builder instances
 
+### Options
+
+| Name                  | Type     | Default | Description       |
+|:----------------------|:---------|:--------|:------------------|
+| [`--format`](#format) | `string` | `table` | Format the output |
+
 
 <!---MARKER_GEN_END-->
 
 ## Description
 
-Lists all builder instances and the nodes for each instance
+Lists all builder instances and the nodes for each instance.
 
 ```console
 $ docker buildx ls
 NAME/NODE           DRIVER/ENDPOINT                   STATUS    BUILDKIT   PLATFORMS
 elated_tesla*       docker-container
-  elated_tesla0 unix:///var/run/docker.sock running v0.10.3  linux/amd64
-  elated_tesla1 ssh://ubuntu@1.2.3.4        running v0.10.3  linux/arm64*, linux/arm/v7, linux/arm/v6
+ \_ elated_tesla0    \_ unix:///var/run/docker.sock   running   v0.10.3    linux/amd64
+ \_ elated_tesla1    \_ ssh://ubuntu@1.2.3.4          running   v0.10.3    linux/arm64*, linux/arm/v7, linux/arm/v6
 default             docker
-  default       default                     running v0.8.2   linux/amd64
+ \_ default          \_ default                       running   v0.8.2     linux/amd64
 ```
 
 Each builder has one or more nodes associated with it. The current builder's
 name is marked with a `*` in `NAME/NODE` and explicit node to build against for
 the target platform marked with a `*` in the `PLATFORMS` column.
+
+## Examples
+
+### <a name="format"></a> Format the output (--format)
+
+The formatting options (`--format`) pretty-prints builder instances output
+using a Go template.
+
+Valid placeholders for the Go template are listed below:
+
+| Placeholder       | Description                                 |
+|-------------------|---------------------------------------------|
+| `.Name`           | Builder or node name                        |
+| `.DriverEndpoint` | Driver (for builder) or Endpoint (for node) |
+| `.LastActivity`   | Builder last activity                       |
+| `.Status`         | Builder or node status                      |
+| `.Buildkit`       | BuildKit version of the node                |
+| `.Platforms`      | Available node's platforms                  |
+| `.Error`          | Error                                       |
+| `.Builder`        | Builder object                              |
+
+When using the `--format` option, the `ls` command will either output the data
+exactly as the template declares or, when using the `table` directive, includes
+column headers as well.
+
+The following example uses a template without headers and outputs the
+`Name` and `DriverEndpoint` entries separated by a colon (`:`):
+
+```console
+$ docker buildx ls --format "{{.Name}}: {{.DriverEndpoint}}"
+elated_tesla: docker-container
+elated_tesla0: unix:///var/run/docker.sock
+elated_tesla1: ssh://ubuntu@1.2.3.4
+default: docker
+default: default
+```
+
+The `Builder` placeholder can be used to access the builder object and its
+fields. For example, the following template outputs the builder's and
+nodes' names with their respective endpoints:
+
+```console
+$ docker buildx ls --format "{{.Builder.Name}}: {{range .Builder.Nodes}}\n  {{.Name}}: {{.Endpoint}}{{end}}"
+elated_tesla:
+  elated_tesla0: unix:///var/run/docker.sock
+  elated_tesla1: ssh://ubuntu@1.2.3.4
+default: docker
+  default: default
+```

go.mod

@@ -104,6 +104,7 @@ require (
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.17.2 // indirect
 	github.com/mailru/easyjson v0.7.6 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/mattn/go-shellwords v1.0.12 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/miekg/pkcs11 v1.1.1 // indirect
@@ -123,6 +124,7 @@ require (
 	github.com/prometheus/client_model v0.3.0 // indirect
 	github.com/prometheus/common v0.42.0 // indirect
 	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
 	github.com/secure-systems-lab/go-securesystemslib v0.4.0 // indirect
 	github.com/shibumi/go-pathspec v1.3.0 // indirect
 	github.com/theupdateframework/notary v0.7.0 // indirect

go.sum

@@ -373,6 +373,8 @@ github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.7.6 h1:8yTIVnZgCoiM1TgqoeTl+LfU5Jg6/xL3QhGQnimLYnA=
 github.com/mailru/easyjson v0.7.6/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mattn/go-shellwords v1.0.12 h1:M2zGm7EW6UQJvDeQxo4T51eKPurbeFbe8WtebGE2xrk=
 github.com/mattn/go-shellwords v1.0.12/go.mod h1:EZzvwXDESEeg03EKmM+RmDnNOPKG4lLtQsUlTZDWQ8Y=
 github.com/mattn/go-sqlite3 v1.6.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
@@ -469,6 +471,8 @@ github.com/prometheus/procfs v0.0.3/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDa
 github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
 github.com/prometheus/procfs v0.9.0 h1:wzCHvIvM5SxWqYvwgVL7yJY8Lz3PKn49KQtpgMYJfhI=
 github.com/prometheus/procfs v0.9.0/go.mod h1:+pB4zwohETzFnmlpe6yd2lSc+0/46IYZRB/chUwxUZY=
+github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=

tests/ls.go

@@ -20,15 +20,37 @@ var lsTests = []func(t *testing.T, sb integration.Sandbox){
 }
 
 func testLs(t *testing.T, sb integration.Sandbox) {
-	out, err := lsCmd(sb)
-	require.NoError(t, err, string(out))
+	tests := []struct {
+		name string
+		args []string
+	}{
+		{
+			name: "no args",
+			args: []string{},
+		},
+		{
+			name: "format",
+			args: []string{"--format", "{{.Name}}: {{.DriverEndpoint}}"},
+		},
+	}
 
 	sbDriver, _, _ := strings.Cut(sb.Name(), "+")
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.name, func(t *testing.T) {
+			out, err := lsCmd(sb, withArgs(tt.args...))
+			require.NoError(t, err, out)
+			found := false
 			for _, line := range strings.Split(out, "\n") {
 				if strings.Contains(line, sb.Address()) {
+					found = true
 					require.Contains(t, line, sbDriver)
-			return
+					break
 				}
 			}
+			if !found {
 				require.Fail(t, out)
 			}
+		})
+	}
+}

vendor/github.com/docker/cli/cli/command/formatter/buildcache.go

@@ -0,0 +1,183 @@
+package formatter
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/pkg/stringid"
+	"github.com/docker/go-units"
+)
+
+const (
+	defaultBuildCacheTableFormat = "table {{.ID}}\t{{.Type}}\t{{.Size}}\t{{.CreatedSince}}\t{{.LastUsedSince}}\t{{.UsageCount}}\t{{.Shared}}\t{{.Description}}"
+
+	cacheIDHeader       = "CACHE ID"
+	cacheTypeHeader     = "CACHE TYPE"
+	parentHeader        = "PARENT"
+	lastUsedSinceHeader = "LAST USED"
+	usageCountHeader    = "USAGE"
+	inUseHeader         = "IN USE"
+	sharedHeader        = "SHARED"
+)
+
+// NewBuildCacheFormat returns a Format for rendering using a Context
+func NewBuildCacheFormat(source string, quiet bool) Format {
+	switch source {
+	case TableFormatKey:
+		if quiet {
+			return DefaultQuietFormat
+		}
+		return Format(defaultBuildCacheTableFormat)
+	case RawFormatKey:
+		if quiet {
+			return `build_cache_id: {{.ID}}`
+		}
+		format := `build_cache_id: {{.ID}}
+parent_id: {{.Parent}}
+build_cache_type: {{.CacheType}}
+description: {{.Description}}
+created_at: {{.CreatedAt}}
+created_since: {{.CreatedSince}}
+last_used_at: {{.LastUsedAt}}
+last_used_since: {{.LastUsedSince}}
+usage_count: {{.UsageCount}}
+in_use: {{.InUse}}
+shared: {{.Shared}}
+`
+		return Format(format)
+	}
+	return Format(source)
+}
+
+func buildCacheSort(buildCache []*types.BuildCache) {
+	sort.Slice(buildCache, func(i, j int) bool {
+		lui, luj := buildCache[i].LastUsedAt, buildCache[j].LastUsedAt
+		switch {
+		case lui == nil && luj == nil:
+			return strings.Compare(buildCache[i].ID, buildCache[j].ID) < 0
+		case lui == nil:
+			return true
+		case luj == nil:
+			return false
+		case lui.Equal(*luj):
+			return strings.Compare(buildCache[i].ID, buildCache[j].ID) < 0
+		default:
+			return lui.Before(*luj)
+		}
+	})
+}
+
+// BuildCacheWrite renders the context for a list of containers
+func BuildCacheWrite(ctx Context, buildCaches []*types.BuildCache) error {
+	render := func(format func(subContext SubContext) error) error {
+		buildCacheSort(buildCaches)
+		for _, bc := range buildCaches {
+			err := format(&buildCacheContext{trunc: ctx.Trunc, v: bc})
+			if err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+	return ctx.Write(newBuildCacheContext(), render)
+}
+
+type buildCacheContext struct {
+	HeaderContext
+	trunc bool
+	v     *types.BuildCache
+}
+
+func newBuildCacheContext() *buildCacheContext {
+	buildCacheCtx := buildCacheContext{}
+	buildCacheCtx.Header = SubHeaderContext{
+		"ID":            cacheIDHeader,
+		"Parent":        parentHeader,
+		"CacheType":     cacheTypeHeader,
+		"Size":          SizeHeader,
+		"CreatedSince":  CreatedSinceHeader,
+		"LastUsedSince": lastUsedSinceHeader,
+		"UsageCount":    usageCountHeader,
+		"InUse":         inUseHeader,
+		"Shared":        sharedHeader,
+		"Description":   DescriptionHeader,
+	}
+	return &buildCacheCtx
+}
+
+func (c *buildCacheContext) MarshalJSON() ([]byte, error) {
+	return MarshalJSON(c)
+}
+
+func (c *buildCacheContext) ID() string {
+	id := c.v.ID
+	if c.trunc {
+		id = stringid.TruncateID(c.v.ID)
+	}
+	if c.v.InUse {
+		return id + "*"
+	}
+	return id
+}
+
+func (c *buildCacheContext) Parent() string {
+	var parent string
+	if len(c.v.Parents) > 0 {
+		parent = strings.Join(c.v.Parents, ", ")
+	} else {
+		parent = c.v.Parent //nolint:staticcheck // Ignore SA1019: Field was deprecated in API v1.42, but kept for backward compatibility
+	}
+	if c.trunc {
+		return stringid.TruncateID(parent)
+	}
+	return parent
+}
+
+func (c *buildCacheContext) CacheType() string {
+	return c.v.Type
+}
+
+func (c *buildCacheContext) Description() string {
+	return c.v.Description
+}
+
+func (c *buildCacheContext) Size() string {
+	return units.HumanSizeWithPrecision(float64(c.v.Size), 3)
+}
+
+func (c *buildCacheContext) CreatedAt() string {
+	return c.v.CreatedAt.String()
+}
+
+func (c *buildCacheContext) CreatedSince() string {
+	return units.HumanDuration(time.Now().UTC().Sub(c.v.CreatedAt)) + " ago"
+}
+
+func (c *buildCacheContext) LastUsedAt() string {
+	if c.v.LastUsedAt == nil {
+		return ""
+	}
+	return c.v.LastUsedAt.String()
+}
+
+func (c *buildCacheContext) LastUsedSince() string {
+	if c.v.LastUsedAt == nil {
+		return ""
+	}
+	return units.HumanDuration(time.Now().UTC().Sub(*c.v.LastUsedAt)) + " ago"
+}
+
+func (c *buildCacheContext) UsageCount() string {
+	return fmt.Sprintf("%d", c.v.UsageCount)
+}
+
+func (c *buildCacheContext) InUse() string {
+	return fmt.Sprintf("%t", c.v.InUse)
+}
+
+func (c *buildCacheContext) Shared() string {
+	return fmt.Sprintf("%t", c.v.Shared)
+}

vendor/github.com/docker/cli/cli/command/formatter/container.go

@@ -0,0 +1,392 @@
+package formatter
+
+import (
+	"fmt"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/distribution/reference"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/pkg/stringid"
+	"github.com/docker/go-units"
+)
+
+const (
+	defaultContainerTableFormat = "table {{.ID}}\t{{.Image}}\t{{.Command}}\t{{.RunningFor}}\t{{.Status}}\t{{.Ports}}\t{{.Names}}"
+
+	namesHeader      = "NAMES"
+	commandHeader    = "COMMAND"
+	runningForHeader = "CREATED"
+	mountsHeader     = "MOUNTS"
+	localVolumes     = "LOCAL VOLUMES"
+	networksHeader   = "NETWORKS"
+)
+
+// NewContainerFormat returns a Format for rendering using a Context
+func NewContainerFormat(source string, quiet bool, size bool) Format {
+	switch source {
+	case TableFormatKey, "": // table formatting is the default if none is set.
+		if quiet {
+			return DefaultQuietFormat
+		}
+		format := defaultContainerTableFormat
+		if size {
+			format += `\t{{.Size}}`
+		}
+		return Format(format)
+	case RawFormatKey:
+		if quiet {
+			return `container_id: {{.ID}}`
+		}
+		format := `container_id: {{.ID}}
+image: {{.Image}}
+command: {{.Command}}
+created_at: {{.CreatedAt}}
+state: {{- pad .State 1 0}}
+status: {{- pad .Status 1 0}}
+names: {{.Names}}
+labels: {{- pad .Labels 1 0}}
+ports: {{- pad .Ports 1 0}}
+`
+		if size {
+			format += `size: {{.Size}}\n`
+		}
+		return Format(format)
+	default: // custom format
+		if quiet {
+			return DefaultQuietFormat
+		}
+		return Format(source)
+	}
+}
+
+// ContainerWrite renders the context for a list of containers
+func ContainerWrite(ctx Context, containers []types.Container) error {
+	render := func(format func(subContext SubContext) error) error {
+		for _, container := range containers {
+			err := format(&ContainerContext{trunc: ctx.Trunc, c: container})
+			if err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+	return ctx.Write(NewContainerContext(), render)
+}
+
+// ContainerContext is a struct used for rendering a list of containers in a Go template.
+type ContainerContext struct {
+	HeaderContext
+	trunc bool
+	c     types.Container
+
+	// FieldsUsed is used in the pre-processing step to detect which fields are
+	// used in the template. It's currently only used to detect use of the .Size
+	// field which (if used) automatically sets the '--size' option when making
+	// the API call.
+	FieldsUsed map[string]interface{}
+}
+
+// NewContainerContext creates a new context for rendering containers
+func NewContainerContext() *ContainerContext {
+	containerCtx := ContainerContext{}
+	containerCtx.Header = SubHeaderContext{
+		"ID":           ContainerIDHeader,
+		"Names":        namesHeader,
+		"Image":        ImageHeader,
+		"Command":      commandHeader,
+		"CreatedAt":    CreatedAtHeader,
+		"RunningFor":   runningForHeader,
+		"Ports":        PortsHeader,
+		"State":        StateHeader,
+		"Status":       StatusHeader,
+		"Size":         SizeHeader,
+		"Labels":       LabelsHeader,
+		"Mounts":       mountsHeader,
+		"LocalVolumes": localVolumes,
+		"Networks":     networksHeader,
+	}
+	return &containerCtx
+}
+
+// MarshalJSON makes ContainerContext implement json.Marshaler
+func (c *ContainerContext) MarshalJSON() ([]byte, error) {
+	return MarshalJSON(c)
+}
+
+// ID returns the container's ID as a string. Depending on the `--no-trunc`
+// option being set, the full or truncated ID is returned.
+func (c *ContainerContext) ID() string {
+	if c.trunc {
+		return stringid.TruncateID(c.c.ID)
+	}
+	return c.c.ID
+}
+
+// Names returns a comma-separated string of the container's names, with their
+// slash (/) prefix stripped. Additional names for the container (related to the
+// legacy `--link` feature) are omitted.
+func (c *ContainerContext) Names() string {
+	names := StripNamePrefix(c.c.Names)
+	if c.trunc {
+		for _, name := range names {
+			if len(strings.Split(name, "/")) == 1 {
+				names = []string{name}
+				break
+			}
+		}
+	}
+	return strings.Join(names, ",")
+}
+
+// StripNamePrefix removes prefix from string, typically container names as returned by `ContainersList` API
+func StripNamePrefix(ss []string) []string {
+	sss := make([]string, len(ss))
+	for i, s := range ss {
+		sss[i] = s[1:]
+	}
+	return sss
+}
+
+// Image returns the container's image reference. If the trunc option is set,
+// the image's registry digest can be included.
+func (c *ContainerContext) Image() string {
+	if c.c.Image == "" {
+		return "<no image>"
+	}
+	if c.trunc {
+		if trunc := stringid.TruncateID(c.c.ImageID); trunc == stringid.TruncateID(c.c.Image) {
+			return trunc
+		}
+		// truncate digest if no-trunc option was not selected
+		ref, err := reference.ParseNormalizedNamed(c.c.Image)
+		if err == nil {
+			if nt, ok := ref.(reference.NamedTagged); ok {
+				// case for when a tag is provided
+				if namedTagged, err := reference.WithTag(reference.TrimNamed(nt), nt.Tag()); err == nil {
+					return reference.FamiliarString(namedTagged)
+				}
+			} else {
+				// case for when a tag is not provided
+				named := reference.TrimNamed(ref)
+				return reference.FamiliarString(named)
+			}
+		}
+	}
+
+	return c.c.Image
+}
+
+// Command returns's the container's command. If the trunc option is set, the
+// returned command is truncated (ellipsized).
+func (c *ContainerContext) Command() string {
+	command := c.c.Command
+	if c.trunc {
+		command = Ellipsis(command, 20)
+	}
+	return strconv.Quote(command)
+}
+
+// CreatedAt returns the "Created" date/time of the container as a unix timestamp.
+func (c *ContainerContext) CreatedAt() string {
+	return time.Unix(c.c.Created, 0).String()
+}
+
+// RunningFor returns a human-readable representation of the duration for which
+// the container has been running.
+//
+// Note that this duration is calculated on the client, and as such is influenced
+// by clock skew between the client and the daemon.
+func (c *ContainerContext) RunningFor() string {
+	createdAt := time.Unix(c.c.Created, 0)
+	return units.HumanDuration(time.Now().UTC().Sub(createdAt)) + " ago"
+}
+
+// Ports returns a comma-separated string representing open ports of the container
+// e.g. "0.0.0.0:80->9090/tcp, 9988/tcp"
+// it's used by command 'docker ps'
+// Both published and exposed ports are included.
+func (c *ContainerContext) Ports() string {
+	return DisplayablePorts(c.c.Ports)
+}
+
+// State returns the container's current state (e.g. "running" or "paused")
+func (c *ContainerContext) State() string {
+	return c.c.State
+}
+
+// Status returns the container's status in a human readable form (for example,
+// "Up 24 hours" or "Exited (0) 8 days ago")
+func (c *ContainerContext) Status() string {
+	return c.c.Status
+}
+
+// Size returns the container's size and virtual size (e.g. "2B (virtual 21.5MB)")
+func (c *ContainerContext) Size() string {
+	if c.FieldsUsed == nil {
+		c.FieldsUsed = map[string]interface{}{}
+	}
+	c.FieldsUsed["Size"] = struct{}{}
+	srw := units.HumanSizeWithPrecision(float64(c.c.SizeRw), 3)
+	sv := units.HumanSizeWithPrecision(float64(c.c.SizeRootFs), 3)
+
+	sf := srw
+	if c.c.SizeRootFs > 0 {
+		sf = fmt.Sprintf("%s (virtual %s)", srw, sv)
+	}
+	return sf
+}
+
+// Labels returns a comma-separated string of labels present on the container.
+func (c *ContainerContext) Labels() string {
+	if c.c.Labels == nil {
+		return ""
+	}
+
+	var joinLabels []string
+	for k, v := range c.c.Labels {
+		joinLabels = append(joinLabels, k+"="+v)
+	}
+	return strings.Join(joinLabels, ",")
+}
+
+// Label returns the value of the label with the given name or an empty string
+// if the given label does not exist.
+func (c *ContainerContext) Label(name string) string {
+	if c.c.Labels == nil {
+		return ""
+	}
+	return c.c.Labels[name]
+}
+
+// Mounts returns a comma-separated string of mount names present on the container.
+// If the trunc option is set, names can be truncated (ellipsized).
+func (c *ContainerContext) Mounts() string {
+	var name string
+	var mounts []string
+	for _, m := range c.c.Mounts {
+		if m.Name == "" {
+			name = m.Source
+		} else {
+			name = m.Name
+		}
+		if c.trunc {
+			name = Ellipsis(name, 15)
+		}
+		mounts = append(mounts, name)
+	}
+	return strings.Join(mounts, ",")
+}
+
+// LocalVolumes returns the number of volumes using the "local" volume driver.
+func (c *ContainerContext) LocalVolumes() string {
+	count := 0
+	for _, m := range c.c.Mounts {
+		if m.Driver == "local" {
+			count++
+		}
+	}
+
+	return fmt.Sprintf("%d", count)
+}
+
+// Networks returns a comma-separated string of networks that the container is
+// attached to.
+func (c *ContainerContext) Networks() string {
+	if c.c.NetworkSettings == nil {
+		return ""
+	}
+
+	networks := []string{}
+	for k := range c.c.NetworkSettings.Networks {
+		networks = append(networks, k)
+	}
+
+	return strings.Join(networks, ",")
+}
+
+// DisplayablePorts returns formatted string representing open ports of container
+// e.g. "0.0.0.0:80->9090/tcp, 9988/tcp"
+// it's used by command 'docker ps'
+func DisplayablePorts(ports []types.Port) string {
+	type portGroup struct {
+		first uint16
+		last  uint16
+	}
+	groupMap := make(map[string]*portGroup)
+	var result []string
+	var hostMappings []string
+	var groupMapKeys []string
+	sort.Slice(ports, func(i, j int) bool {
+		return comparePorts(ports[i], ports[j])
+	})
+
+	for _, port := range ports {
+		current := port.PrivatePort
+		portKey := port.Type
+		if port.IP != "" {
+			if port.PublicPort != current {
+				hostMappings = append(hostMappings, fmt.Sprintf("%s:%d->%d/%s", port.IP, port.PublicPort, port.PrivatePort, port.Type))
+				continue
+			}
+			portKey = fmt.Sprintf("%s/%s", port.IP, port.Type)
+		}
+		group := groupMap[portKey]
+
+		if group == nil {
+			groupMap[portKey] = &portGroup{first: current, last: current}
+			// record order that groupMap keys are created
+			groupMapKeys = append(groupMapKeys, portKey)
+			continue
+		}
+		if current == (group.last + 1) {
+			group.last = current
+			continue
+		}
+
+		result = append(result, formGroup(portKey, group.first, group.last))
+		groupMap[portKey] = &portGroup{first: current, last: current}
+	}
+	for _, portKey := range groupMapKeys {
+		g := groupMap[portKey]
+		result = append(result, formGroup(portKey, g.first, g.last))
+	}
+	result = append(result, hostMappings...)
+	return strings.Join(result, ", ")
+}
+
+func formGroup(key string, start, last uint16) string {
+	parts := strings.Split(key, "/")
+	groupType := parts[0]
+	var ip string
+	if len(parts) > 1 {
+		ip = parts[0]
+		groupType = parts[1]
+	}
+	group := strconv.Itoa(int(start))
+	if start != last {
+		group = fmt.Sprintf("%s-%d", group, last)
+	}
+	if ip != "" {
+		group = fmt.Sprintf("%s:%s->%s", ip, group, group)
+	}
+	return fmt.Sprintf("%s/%s", group, groupType)
+}
+
+func comparePorts(i, j types.Port) bool {
+	if i.PrivatePort != j.PrivatePort {
+		return i.PrivatePort < j.PrivatePort
+	}
+
+	if i.IP != j.IP {
+		return i.IP < j.IP
+	}
+
+	if i.PublicPort != j.PublicPort {
+		return i.PublicPort < j.PublicPort
+	}
+
+	return i.Type < j.Type
+}

vendor/github.com/docker/cli/cli/command/formatter/context.go

@@ -0,0 +1,86 @@
+package formatter
+
+const (
+	// ClientContextTableFormat is the default client context format.
+	ClientContextTableFormat = "table {{.Name}}{{if .Current}} *{{end}}\t{{.Description}}\t{{.DockerEndpoint}}\t{{.Error}}"
+
+	dockerEndpointHeader = "DOCKER ENDPOINT"
+	quietContextFormat   = "{{.Name}}"
+
+	maxErrLength = 45
+)
+
+// NewClientContextFormat returns a Format for rendering using a Context
+func NewClientContextFormat(source string, quiet bool) Format {
+	if quiet {
+		return quietContextFormat
+	}
+	if source == TableFormatKey {
+		return ClientContextTableFormat
+	}
+	return Format(source)
+}
+
+// ClientContext is a context for display
+type ClientContext struct {
+	Name           string
+	Description    string
+	DockerEndpoint string
+	Current        bool
+	Error          string
+}
+
+// ClientContextWrite writes formatted contexts using the Context
+func ClientContextWrite(ctx Context, contexts []*ClientContext) error {
+	render := func(format func(subContext SubContext) error) error {
+		for _, context := range contexts {
+			if err := format(&clientContextContext{c: context}); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+	return ctx.Write(newClientContextContext(), render)
+}
+
+type clientContextContext struct {
+	HeaderContext
+	c *ClientContext
+}
+
+func newClientContextContext() *clientContextContext {
+	ctx := clientContextContext{}
+	ctx.Header = SubHeaderContext{
+		"Name":           NameHeader,
+		"Description":    DescriptionHeader,
+		"DockerEndpoint": dockerEndpointHeader,
+		"Error":          ErrorHeader,
+	}
+	return &ctx
+}
+
+func (c *clientContextContext) MarshalJSON() ([]byte, error) {
+	return MarshalJSON(c)
+}
+
+func (c *clientContextContext) Current() bool {
+	return c.c.Current
+}
+
+func (c *clientContextContext) Name() string {
+	return c.c.Name
+}
+
+func (c *clientContextContext) Description() string {
+	return c.c.Description
+}
+
+func (c *clientContextContext) DockerEndpoint() string {
+	return c.c.DockerEndpoint
+}
+
+// Error returns the truncated error (if any) that occurred when loading the context.
+func (c *clientContextContext) Error() string {
+	// TODO(thaJeztah) add "--no-trunc" option to context ls and set default to 30 cols to match "docker service ps"
+	return Ellipsis(c.c.Error, maxErrLength)
+}

vendor/github.com/docker/cli/cli/command/formatter/custom.go

@@ -0,0 +1,48 @@
+package formatter
+
+import "strings"
+
+// Common header constants
+const (
+	CreatedSinceHeader = "CREATED"
+	CreatedAtHeader    = "CREATED AT"
+	SizeHeader         = "SIZE"
+	LabelsHeader       = "LABELS"
+	NameHeader         = "NAME"
+	DescriptionHeader  = "DESCRIPTION"
+	DriverHeader       = "DRIVER"
+	ScopeHeader        = "SCOPE"
+	StateHeader        = "STATE"
+	StatusHeader       = "STATUS"
+	PortsHeader        = "PORTS"
+	ImageHeader        = "IMAGE"
+	ErrorHeader        = "ERROR"
+	ContainerIDHeader  = "CONTAINER ID"
+)
+
+// SubContext defines what Context implementation should provide
+type SubContext interface {
+	FullHeader() interface{}
+}
+
+// SubHeaderContext is a map destined to formatter header (table format)
+type SubHeaderContext map[string]string
+
+// Label returns the header label for the specified string
+func (c SubHeaderContext) Label(name string) string {
+	n := strings.Split(name, ".")
+	r := strings.NewReplacer("-", " ", "_", " ")
+	h := r.Replace(n[len(n)-1])
+
+	return h
+}
+
+// HeaderContext provides the subContext interface for managing headers
+type HeaderContext struct {
+	Header interface{}
+}
+
+// FullHeader returns the header as an interface
+func (c *HeaderContext) FullHeader() interface{} {
+	return c.Header
+}

vendor/github.com/docker/cli/cli/command/formatter/disk_usage.go

@@ -0,0 +1,477 @@
+package formatter
+
+import (
+	"bytes"
+	"fmt"
+	"strconv"
+	"strings"
+	"text/template"
+
+	"github.com/distribution/reference"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/image"
+	"github.com/docker/docker/api/types/volume"
+	units "github.com/docker/go-units"
+)
+
+const (
+	defaultDiskUsageImageTableFormat      = "table {{.Repository}}\t{{.Tag}}\t{{.ID}}\t{{.CreatedSince}}\t{{.Size}}\t{{.SharedSize}}\t{{.UniqueSize}}\t{{.Containers}}"
+	defaultDiskUsageContainerTableFormat  = "table {{.ID}}\t{{.Image}}\t{{.Command}}\t{{.LocalVolumes}}\t{{.Size}}\t{{.RunningFor}}\t{{.Status}}\t{{.Names}}"
+	defaultDiskUsageVolumeTableFormat     = "table {{.Name}}\t{{.Links}}\t{{.Size}}"
+	defaultDiskUsageBuildCacheTableFormat = "table {{.ID}}\t{{.CacheType}}\t{{.Size}}\t{{.CreatedSince}}\t{{.LastUsedSince}}\t{{.UsageCount}}\t{{.Shared}}"
+	defaultDiskUsageTableFormat           = "table {{.Type}}\t{{.TotalCount}}\t{{.Active}}\t{{.Size}}\t{{.Reclaimable}}"
+
+	typeHeader        = "TYPE"
+	totalHeader       = "TOTAL"
+	activeHeader      = "ACTIVE"
+	reclaimableHeader = "RECLAIMABLE"
+	containersHeader  = "CONTAINERS"
+	sharedSizeHeader  = "SHARED SIZE"
+	uniqueSizeHeader  = "UNIQUE SIZE"
+)
+
+// DiskUsageContext contains disk usage specific information required by the formatter, encapsulate a Context struct.
+type DiskUsageContext struct {
+	Context
+	Verbose     bool
+	LayersSize  int64
+	Images      []*image.Summary
+	Containers  []*types.Container
+	Volumes     []*volume.Volume
+	BuildCache  []*types.BuildCache
+	BuilderSize int64
+}
+
+func (ctx *DiskUsageContext) startSubsection(format string) (*template.Template, error) {
+	ctx.buffer = bytes.NewBufferString("")
+	ctx.header = ""
+	ctx.Format = Format(format)
+	ctx.preFormat()
+
+	return ctx.parseFormat()
+}
+
+// NewDiskUsageFormat returns a format for rendering an DiskUsageContext
+func NewDiskUsageFormat(source string, verbose bool) Format {
+	switch {
+	case verbose && source == RawFormatKey:
+		format := `{{range .Images}}type: Image
+` + NewImageFormat(source, false, true) + `
+{{end -}}
+{{range .Containers}}type: Container
+` + NewContainerFormat(source, false, true) + `
+{{end -}}
+{{range .Volumes}}type: Volume
+` + NewVolumeFormat(source, false) + `
+{{end -}}
+{{range .BuildCache}}type: Build Cache
+` + NewBuildCacheFormat(source, false) + `
+{{end -}}`
+		return format
+	case !verbose && source == TableFormatKey:
+		return Format(defaultDiskUsageTableFormat)
+	case !verbose && source == RawFormatKey:
+		format := `type: {{.Type}}
+total: {{.TotalCount}}
+active: {{.Active}}
+size: {{.Size}}
+reclaimable: {{.Reclaimable}}
+`
+		return Format(format)
+	default:
+		return Format(source)
+	}
+}
+
+func (ctx *DiskUsageContext) Write() (err error) {
+	if ctx.Verbose {
+		return ctx.verboseWrite()
+	}
+	ctx.buffer = bytes.NewBufferString("")
+	ctx.preFormat()
+
+	tmpl, err := ctx.parseFormat()
+	if err != nil {
+		return err
+	}
+
+	err = ctx.contextFormat(tmpl, &diskUsageImagesContext{
+		totalSize: ctx.LayersSize,
+		images:    ctx.Images,
+	})
+	if err != nil {
+		return err
+	}
+	err = ctx.contextFormat(tmpl, &diskUsageContainersContext{
+		containers: ctx.Containers,
+	})
+	if err != nil {
+		return err
+	}
+
+	err = ctx.contextFormat(tmpl, &diskUsageVolumesContext{
+		volumes: ctx.Volumes,
+	})
+	if err != nil {
+		return err
+	}
+
+	err = ctx.contextFormat(tmpl, &diskUsageBuilderContext{
+		builderSize: ctx.BuilderSize,
+		buildCache:  ctx.BuildCache,
+	})
+	if err != nil {
+		return err
+	}
+
+	diskUsageContainersCtx := diskUsageContainersContext{containers: []*types.Container{}}
+	diskUsageContainersCtx.Header = SubHeaderContext{
+		"Type":        typeHeader,
+		"TotalCount":  totalHeader,
+		"Active":      activeHeader,
+		"Size":        SizeHeader,
+		"Reclaimable": reclaimableHeader,
+	}
+	ctx.postFormat(tmpl, &diskUsageContainersCtx)
+
+	return err
+}
+
+type diskUsageContext struct {
+	Images     []*imageContext
+	Containers []*ContainerContext
+	Volumes    []*volumeContext
+	BuildCache []*buildCacheContext
+}
+
+func (ctx *DiskUsageContext) verboseWrite() error {
+	duc := &diskUsageContext{
+		Images:     make([]*imageContext, 0, len(ctx.Images)),
+		Containers: make([]*ContainerContext, 0, len(ctx.Containers)),
+		Volumes:    make([]*volumeContext, 0, len(ctx.Volumes)),
+		BuildCache: make([]*buildCacheContext, 0, len(ctx.BuildCache)),
+	}
+	trunc := ctx.Format.IsTable()
+
+	// First images
+	for _, i := range ctx.Images {
+		repo := "<none>"
+		tag := "<none>"
+		if len(i.RepoTags) > 0 && !isDangling(*i) {
+			// Only show the first tag
+			ref, err := reference.ParseNormalizedNamed(i.RepoTags[0])
+			if err != nil {
+				continue
+			}
+			if nt, ok := ref.(reference.NamedTagged); ok {
+				repo = reference.FamiliarName(ref)
+				tag = nt.Tag()
+			}
+		}
+
+		duc.Images = append(duc.Images, &imageContext{
+			repo:  repo,
+			tag:   tag,
+			trunc: trunc,
+			i:     *i,
+		})
+	}
+
+	// Now containers
+	for _, c := range ctx.Containers {
+		// Don't display the virtual size
+		c.SizeRootFs = 0
+		duc.Containers = append(duc.Containers, &ContainerContext{trunc: trunc, c: *c})
+	}
+
+	// And volumes
+	for _, v := range ctx.Volumes {
+		duc.Volumes = append(duc.Volumes, &volumeContext{v: *v})
+	}
+
+	// And build cache
+	buildCacheSort(ctx.BuildCache)
+	for _, v := range ctx.BuildCache {
+		duc.BuildCache = append(duc.BuildCache, &buildCacheContext{v: v, trunc: trunc})
+	}
+
+	if ctx.Format == TableFormatKey {
+		return ctx.verboseWriteTable(duc)
+	}
+
+	ctx.preFormat()
+	tmpl, err := ctx.parseFormat()
+	if err != nil {
+		return err
+	}
+	return tmpl.Execute(ctx.Output, duc)
+}
+
+func (ctx *DiskUsageContext) verboseWriteTable(duc *diskUsageContext) error {
+	tmpl, err := ctx.startSubsection(defaultDiskUsageImageTableFormat)
+	if err != nil {
+		return err
+	}
+	ctx.Output.Write([]byte("Images space usage:\n\n"))
+	for _, img := range duc.Images {
+		if err := ctx.contextFormat(tmpl, img); err != nil {
+			return err
+		}
+	}
+	ctx.postFormat(tmpl, newImageContext())
+
+	tmpl, err = ctx.startSubsection(defaultDiskUsageContainerTableFormat)
+	if err != nil {
+		return err
+	}
+	ctx.Output.Write([]byte("\nContainers space usage:\n\n"))
+	for _, c := range duc.Containers {
+		if err := ctx.contextFormat(tmpl, c); err != nil {
+			return err
+		}
+	}
+	ctx.postFormat(tmpl, NewContainerContext())
+
+	tmpl, err = ctx.startSubsection(defaultDiskUsageVolumeTableFormat)
+	if err != nil {
+		return err
+	}
+	ctx.Output.Write([]byte("\nLocal Volumes space usage:\n\n"))
+	for _, v := range duc.Volumes {
+		if err := ctx.contextFormat(tmpl, v); err != nil {
+			return err
+		}
+	}
+	ctx.postFormat(tmpl, newVolumeContext())
+
+	tmpl, err = ctx.startSubsection(defaultDiskUsageBuildCacheTableFormat)
+	if err != nil {
+		return err
+	}
+	fmt.Fprintf(ctx.Output, "\nBuild cache usage: %s\n\n", units.HumanSize(float64(ctx.BuilderSize)))
+	for _, v := range duc.BuildCache {
+		if err := ctx.contextFormat(tmpl, v); err != nil {
+			return err
+		}
+	}
+	ctx.postFormat(tmpl, newBuildCacheContext())
+
+	return nil
+}
+
+type diskUsageImagesContext struct {
+	HeaderContext
+	totalSize int64
+	images    []*image.Summary
+}
+
+func (c *diskUsageImagesContext) MarshalJSON() ([]byte, error) {
+	return MarshalJSON(c)
+}
+
+func (c *diskUsageImagesContext) Type() string {
+	return "Images"
+}
+
+func (c *diskUsageImagesContext) TotalCount() string {
+	return strconv.Itoa(len(c.images))
+}
+
+func (c *diskUsageImagesContext) Active() string {
+	used := 0
+	for _, i := range c.images {
+		if i.Containers > 0 {
+			used++
+		}
+	}
+
+	return strconv.Itoa(used)
+}
+
+func (c *diskUsageImagesContext) Size() string {
+	return units.HumanSize(float64(c.totalSize))
+}
+
+func (c *diskUsageImagesContext) Reclaimable() string {
+	var used int64
+
+	for _, i := range c.images {
+		if i.Containers != 0 {
+			if i.Size == -1 || i.SharedSize == -1 {
+				continue
+			}
+			used += i.Size - i.SharedSize
+		}
+	}
+
+	reclaimable := c.totalSize - used
+	if c.totalSize > 0 {
+		return fmt.Sprintf("%s (%v%%)", units.HumanSize(float64(reclaimable)), (reclaimable*100)/c.totalSize)
+	}
+	return units.HumanSize(float64(reclaimable))
+}
+
+type diskUsageContainersContext struct {
+	HeaderContext
+	containers []*types.Container
+}
+
+func (c *diskUsageContainersContext) MarshalJSON() ([]byte, error) {
+	return MarshalJSON(c)
+}
+
+func (c *diskUsageContainersContext) Type() string {
+	return "Containers"
+}
+
+func (c *diskUsageContainersContext) TotalCount() string {
+	return strconv.Itoa(len(c.containers))
+}
+
+func (c *diskUsageContainersContext) isActive(container types.Container) bool {
+	return strings.Contains(container.State, "running") ||
+		strings.Contains(container.State, "paused") ||
+		strings.Contains(container.State, "restarting")
+}
+
+func (c *diskUsageContainersContext) Active() string {
+	used := 0
+	for _, container := range c.containers {
+		if c.isActive(*container) {
+			used++
+		}
+	}
+
+	return strconv.Itoa(used)
+}
+
+func (c *diskUsageContainersContext) Size() string {
+	var size int64
+
+	for _, container := range c.containers {
+		size += container.SizeRw
+	}
+
+	return units.HumanSize(float64(size))
+}
+
+func (c *diskUsageContainersContext) Reclaimable() string {
+	var reclaimable int64
+	var totalSize int64
+
+	for _, container := range c.containers {
+		if !c.isActive(*container) {
+			reclaimable += container.SizeRw
+		}
+		totalSize += container.SizeRw
+	}
+
+	if totalSize > 0 {
+		return fmt.Sprintf("%s (%v%%)", units.HumanSize(float64(reclaimable)), (reclaimable*100)/totalSize)
+	}
+
+	return units.HumanSize(float64(reclaimable))
+}
+
+type diskUsageVolumesContext struct {
+	HeaderContext
+	volumes []*volume.Volume
+}
+
+func (c *diskUsageVolumesContext) MarshalJSON() ([]byte, error) {
+	return MarshalJSON(c)
+}
+
+func (c *diskUsageVolumesContext) Type() string {
+	return "Local Volumes"
+}
+
+func (c *diskUsageVolumesContext) TotalCount() string {
+	return strconv.Itoa(len(c.volumes))
+}
+
+func (c *diskUsageVolumesContext) Active() string {
+	used := 0
+	for _, v := range c.volumes {
+		if v.UsageData.RefCount > 0 {
+			used++
+		}
+	}
+
+	return strconv.Itoa(used)
+}
+
+func (c *diskUsageVolumesContext) Size() string {
+	var size int64
+
+	for _, v := range c.volumes {
+		if v.UsageData.Size != -1 {
+			size += v.UsageData.Size
+		}
+	}
+
+	return units.HumanSize(float64(size))
+}
+
+func (c *diskUsageVolumesContext) Reclaimable() string {
+	var reclaimable int64
+	var totalSize int64
+
+	for _, v := range c.volumes {
+		if v.UsageData.Size != -1 {
+			if v.UsageData.RefCount == 0 {
+				reclaimable += v.UsageData.Size
+			}
+			totalSize += v.UsageData.Size
+		}
+	}
+
+	if totalSize > 0 {
+		return fmt.Sprintf("%s (%v%%)", units.HumanSize(float64(reclaimable)), (reclaimable*100)/totalSize)
+	}
+
+	return units.HumanSize(float64(reclaimable))
+}
+
+type diskUsageBuilderContext struct {
+	HeaderContext
+	builderSize int64
+	buildCache  []*types.BuildCache
+}
+
+func (c *diskUsageBuilderContext) MarshalJSON() ([]byte, error) {
+	return MarshalJSON(c)
+}
+
+func (c *diskUsageBuilderContext) Type() string {
+	return "Build Cache"
+}
+
+func (c *diskUsageBuilderContext) TotalCount() string {
+	return strconv.Itoa(len(c.buildCache))
+}
+
+func (c *diskUsageBuilderContext) Active() string {
+	numActive := 0
+	for _, bc := range c.buildCache {
+		if bc.InUse {
+			numActive++
+		}
+	}
+	return strconv.Itoa(numActive)
+}
+
+func (c *diskUsageBuilderContext) Size() string {
+	return units.HumanSize(float64(c.builderSize))
+}
+
+func (c *diskUsageBuilderContext) Reclaimable() string {
+	var inUseBytes int64
+	for _, bc := range c.buildCache {
+		if bc.InUse && !bc.Shared {
+			inUseBytes += bc.Size
+		}
+	}
+
+	return units.HumanSize(float64(c.builderSize - inUseBytes))
+}

vendor/github.com/docker/cli/cli/command/formatter/displayutils.go

@@ -0,0 +1,61 @@
+package formatter
+
+import (
+	"unicode/utf8"
+
+	"golang.org/x/text/width"
+)
+
+// charWidth returns the number of horizontal positions a character occupies,
+// and is used to account for wide characters when displaying strings.
+//
+// In a broad sense, wide characters include East Asian Wide, East Asian Full-width,
+// (when not in East Asian context) see http://unicode.org/reports/tr11/.
+func charWidth(r rune) int {
+	switch width.LookupRune(r).Kind() {
+	case width.EastAsianWide, width.EastAsianFullwidth:
+		return 2
+	default:
+		return 1
+	}
+}
+
+// Ellipsis truncates a string to fit within maxDisplayWidth, and appends ellipsis (…).
+// For maxDisplayWidth of 1 and lower, no ellipsis is appended.
+// For maxDisplayWidth of 1, first char of string will return even if its width > 1.
+func Ellipsis(s string, maxDisplayWidth int) string {
+	if maxDisplayWidth <= 0 {
+		return ""
+	}
+	rs := []rune(s)
+	if maxDisplayWidth == 1 {
+		return string(rs[0])
+	}
+
+	byteLen := len(s)
+	if byteLen == utf8.RuneCountInString(s) {
+		if byteLen <= maxDisplayWidth {
+			return s
+		}
+		return string(rs[:maxDisplayWidth-1]) + "…"
+	}
+
+	var (
+		display      []int
+		displayWidth int
+	)
+	for _, r := range rs {
+		cw := charWidth(r)
+		displayWidth += cw
+		display = append(display, displayWidth)
+	}
+	if displayWidth <= maxDisplayWidth {
+		return s
+	}
+	for i := range display {
+		if display[i] <= maxDisplayWidth-1 && display[i+1] > maxDisplayWidth-1 {
+			return string(rs[:i+1]) + "…"
+		}
+	}
+	return s
+}

vendor/github.com/docker/cli/cli/command/formatter/formatter.go

@@ -0,0 +1,128 @@
+package formatter
+
+import (
+	"bytes"
+	"io"
+	"strings"
+	"text/template"
+
+	"github.com/docker/cli/cli/command/formatter/tabwriter"
+	"github.com/docker/cli/templates"
+	"github.com/pkg/errors"
+)
+
+// Format keys used to specify certain kinds of output formats
+const (
+	TableFormatKey  = "table"
+	RawFormatKey    = "raw"
+	PrettyFormatKey = "pretty"
+	JSONFormatKey   = "json"
+
+	DefaultQuietFormat = "{{.ID}}"
+	JSONFormat         = "{{json .}}"
+)
+
+// Format is the format string rendered using the Context
+type Format string
+
+// IsTable returns true if the format is a table-type format
+func (f Format) IsTable() bool {
+	return strings.HasPrefix(string(f), TableFormatKey)
+}
+
+// IsJSON returns true if the format is the json format
+func (f Format) IsJSON() bool {
+	return string(f) == JSONFormatKey
+}
+
+// Contains returns true if the format contains the substring
+func (f Format) Contains(sub string) bool {
+	return strings.Contains(string(f), sub)
+}
+
+// Context contains information required by the formatter to print the output as desired.
+type Context struct {
+	// Output is the output stream to which the formatted string is written.
+	Output io.Writer
+	// Format is used to choose raw, table or custom format for the output.
+	Format Format
+	// Trunc when set to true will truncate the output of certain fields such as Container ID.
+	Trunc bool
+
+	// internal element
+	finalFormat string
+	header      interface{}
+	buffer      *bytes.Buffer
+}
+
+func (c *Context) preFormat() {
+	c.finalFormat = string(c.Format)
+	// TODO: handle this in the Format type
+	switch {
+	case c.Format.IsTable():
+		c.finalFormat = c.finalFormat[len(TableFormatKey):]
+	case c.Format.IsJSON():
+		c.finalFormat = JSONFormat
+	}
+
+	c.finalFormat = strings.Trim(c.finalFormat, " ")
+	r := strings.NewReplacer(`\t`, "\t", `\n`, "\n")
+	c.finalFormat = r.Replace(c.finalFormat)
+}
+
+func (c *Context) parseFormat() (*template.Template, error) {
+	tmpl, err := templates.Parse(c.finalFormat)
+	if err != nil {
+		return tmpl, errors.Wrap(err, "template parsing error")
+	}
+	return tmpl, err
+}
+
+func (c *Context) postFormat(tmpl *template.Template, subContext SubContext) {
+	if c.Format.IsTable() {
+		t := tabwriter.NewWriter(c.Output, 10, 1, 3, ' ', 0)
+		buffer := bytes.NewBufferString("")
+		tmpl.Funcs(templates.HeaderFunctions).Execute(buffer, subContext.FullHeader())
+		buffer.WriteTo(t)
+		t.Write([]byte("\n"))
+		c.buffer.WriteTo(t)
+		t.Flush()
+	} else {
+		c.buffer.WriteTo(c.Output)
+	}
+}
+
+func (c *Context) contextFormat(tmpl *template.Template, subContext SubContext) error {
+	if err := tmpl.Execute(c.buffer, subContext); err != nil {
+		return errors.Wrap(err, "template parsing error")
+	}
+	if c.Format.IsTable() && c.header != nil {
+		c.header = subContext.FullHeader()
+	}
+	c.buffer.WriteString("\n")
+	return nil
+}
+
+// SubFormat is a function type accepted by Write()
+type SubFormat func(func(SubContext) error) error
+
+// Write the template to the buffer using this Context
+func (c *Context) Write(sub SubContext, f SubFormat) error {
+	c.buffer = bytes.NewBufferString("")
+	c.preFormat()
+
+	tmpl, err := c.parseFormat()
+	if err != nil {
+		return err
+	}
+
+	subFormat := func(subContext SubContext) error {
+		return c.contextFormat(tmpl, subContext)
+	}
+	if err := f(subFormat); err != nil {
+		return err
+	}
+
+	c.postFormat(tmpl, sub)
+	return nil
+}

vendor/github.com/docker/cli/cli/command/formatter/image.go

@@ -0,0 +1,283 @@
+package formatter
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/distribution/reference"
+	"github.com/docker/docker/api/types/image"
+	"github.com/docker/docker/pkg/stringid"
+	units "github.com/docker/go-units"
+)
+
+const (
+	defaultImageTableFormat           = "table {{.Repository}}\t{{.Tag}}\t{{.ID}}\t{{if .CreatedSince }}{{.CreatedSince}}{{else}}N/A{{end}}\t{{.Size}}"
+	defaultImageTableFormatWithDigest = "table {{.Repository}}\t{{.Tag}}\t{{.Digest}}\t{{.ID}}\t{{if .CreatedSince }}{{.CreatedSince}}{{else}}N/A{{end}}\t{{.Size}}"
+
+	imageIDHeader    = "IMAGE ID"
+	repositoryHeader = "REPOSITORY"
+	tagHeader        = "TAG"
+	digestHeader     = "DIGEST"
+)
+
+// ImageContext contains image specific information required by the formatter, encapsulate a Context struct.
+type ImageContext struct {
+	Context
+	Digest bool
+}
+
+func isDangling(image image.Summary) bool {
+	if len(image.RepoTags) == 0 && len(image.RepoDigests) == 0 {
+		return true
+	}
+	return len(image.RepoTags) == 1 && image.RepoTags[0] == "<none>:<none>" && len(image.RepoDigests) == 1 && image.RepoDigests[0] == "<none>@<none>"
+}
+
+// NewImageFormat returns a format for rendering an ImageContext
+func NewImageFormat(source string, quiet bool, digest bool) Format {
+	switch source {
+	case TableFormatKey:
+		switch {
+		case quiet:
+			return DefaultQuietFormat
+		case digest:
+			return defaultImageTableFormatWithDigest
+		default:
+			return defaultImageTableFormat
+		}
+	case RawFormatKey:
+		switch {
+		case quiet:
+			return `image_id: {{.ID}}`
+		case digest:
+			return `repository: {{ .Repository }}
+tag: {{.Tag}}
+digest: {{.Digest}}
+image_id: {{.ID}}
+created_at: {{.CreatedAt}}
+virtual_size: {{.Size}}
+`
+		default:
+			return `repository: {{ .Repository }}
+tag: {{.Tag}}
+image_id: {{.ID}}
+created_at: {{.CreatedAt}}
+virtual_size: {{.Size}}
+`
+		}
+	}
+
+	format := Format(source)
+	if format.IsTable() && digest && !format.Contains("{{.Digest}}") {
+		format += "\t{{.Digest}}"
+	}
+	return format
+}
+
+// ImageWrite writes the formatter images using the ImageContext
+func ImageWrite(ctx ImageContext, images []image.Summary) error {
+	render := func(format func(subContext SubContext) error) error {
+		return imageFormat(ctx, images, format)
+	}
+	return ctx.Write(newImageContext(), render)
+}
+
+// needDigest determines whether the image digest should be ignored or not when writing image context
+func needDigest(ctx ImageContext) bool {
+	return ctx.Digest || ctx.Format.Contains("{{.Digest}}")
+}
+
+func imageFormat(ctx ImageContext, images []image.Summary, format func(subContext SubContext) error) error {
+	for _, image := range images {
+		formatted := []*imageContext{}
+		if isDangling(image) {
+			formatted = append(formatted, &imageContext{
+				trunc:  ctx.Trunc,
+				i:      image,
+				repo:   "<none>",
+				tag:    "<none>",
+				digest: "<none>",
+			})
+		} else {
+			formatted = imageFormatTaggedAndDigest(ctx, image)
+		}
+		for _, imageCtx := range formatted {
+			if err := format(imageCtx); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func imageFormatTaggedAndDigest(ctx ImageContext, image image.Summary) []*imageContext {
+	repoTags := map[string][]string{}
+	repoDigests := map[string][]string{}
+	images := []*imageContext{}
+
+	for _, refString := range image.RepoTags {
+		ref, err := reference.ParseNormalizedNamed(refString)
+		if err != nil {
+			continue
+		}
+		if nt, ok := ref.(reference.NamedTagged); ok {
+			familiarRef := reference.FamiliarName(ref)
+			repoTags[familiarRef] = append(repoTags[familiarRef], nt.Tag())
+		}
+	}
+	for _, refString := range image.RepoDigests {
+		ref, err := reference.ParseNormalizedNamed(refString)
+		if err != nil {
+			continue
+		}
+		if c, ok := ref.(reference.Canonical); ok {
+			familiarRef := reference.FamiliarName(ref)
+			repoDigests[familiarRef] = append(repoDigests[familiarRef], c.Digest().String())
+		}
+	}
+
+	addImage := func(repo, tag, digest string) {
+		images = append(images, &imageContext{
+			trunc:  ctx.Trunc,
+			i:      image,
+			repo:   repo,
+			tag:    tag,
+			digest: digest,
+		})
+	}
+
+	for repo, tags := range repoTags {
+		digests := repoDigests[repo]
+
+		// Do not display digests as their own row
+		delete(repoDigests, repo)
+
+		if !needDigest(ctx) {
+			// Ignore digest references, just show tag once
+			digests = nil
+		}
+
+		for _, tag := range tags {
+			if len(digests) == 0 {
+				addImage(repo, tag, "<none>")
+				continue
+			}
+			// Display the digests for each tag
+			for _, dgst := range digests {
+				addImage(repo, tag, dgst)
+			}
+
+		}
+	}
+
+	// Show rows for remaining digest only references
+	for repo, digests := range repoDigests {
+		// If digests are displayed, show row per digest
+		if ctx.Digest {
+			for _, dgst := range digests {
+				addImage(repo, "<none>", dgst)
+			}
+		} else {
+			addImage(repo, "<none>", "")
+		}
+	}
+	return images
+}
+
+type imageContext struct {
+	HeaderContext
+	trunc  bool
+	i      image.Summary
+	repo   string
+	tag    string
+	digest string
+}
+
+func newImageContext() *imageContext {
+	imageCtx := imageContext{}
+	imageCtx.Header = SubHeaderContext{
+		"ID":           imageIDHeader,
+		"Repository":   repositoryHeader,
+		"Tag":          tagHeader,
+		"Digest":       digestHeader,
+		"CreatedSince": CreatedSinceHeader,
+		"CreatedAt":    CreatedAtHeader,
+		"Size":         SizeHeader,
+		"Containers":   containersHeader,
+		"VirtualSize":  SizeHeader, // Deprecated: VirtualSize is deprecated, and equivalent to Size.
+		"SharedSize":   sharedSizeHeader,
+		"UniqueSize":   uniqueSizeHeader,
+	}
+	return &imageCtx
+}
+
+func (c *imageContext) MarshalJSON() ([]byte, error) {
+	return MarshalJSON(c)
+}
+
+func (c *imageContext) ID() string {
+	if c.trunc {
+		return stringid.TruncateID(c.i.ID)
+	}
+	return c.i.ID
+}
+
+func (c *imageContext) Repository() string {
+	return c.repo
+}
+
+func (c *imageContext) Tag() string {
+	return c.tag
+}
+
+func (c *imageContext) Digest() string {
+	return c.digest
+}
+
+func (c *imageContext) CreatedSince() string {
+	createdAt := time.Unix(c.i.Created, 0)
+
+	if createdAt.IsZero() {
+		return ""
+	}
+
+	return units.HumanDuration(time.Now().UTC().Sub(createdAt)) + " ago"
+}
+
+func (c *imageContext) CreatedAt() string {
+	return time.Unix(c.i.Created, 0).String()
+}
+
+func (c *imageContext) Size() string {
+	return units.HumanSizeWithPrecision(float64(c.i.Size), 3)
+}
+
+func (c *imageContext) Containers() string {
+	if c.i.Containers == -1 {
+		return "N/A"
+	}
+	return fmt.Sprintf("%d", c.i.Containers)
+}
+
+// VirtualSize shows the virtual size of the image and all of its parent
+// images. Starting with docker 1.10, images are self-contained, and
+// the VirtualSize is identical to Size.
+//
+// Deprecated: VirtualSize is deprecated, and equivalent to [imageContext.Size].
+func (c *imageContext) VirtualSize() string {
+	return units.HumanSize(float64(c.i.Size))
+}
+
+func (c *imageContext) SharedSize() string {
+	if c.i.SharedSize == -1 {
+		return "N/A"
+	}
+	return units.HumanSize(float64(c.i.SharedSize))
+}
+
+func (c *imageContext) UniqueSize() string {
+	if c.i.Size == -1 || c.i.SharedSize == -1 {
+		return "N/A"
+	}
+	return units.HumanSize(float64(c.i.Size - c.i.SharedSize))
+}

vendor/github.com/docker/cli/cli/command/formatter/reflect.go

@@ -0,0 +1,68 @@
+package formatter
+
+import (
+	"encoding/json"
+	"reflect"
+	"unicode"
+
+	"github.com/pkg/errors"
+)
+
+// MarshalJSON marshals x into json
+// It differs a bit from encoding/json MarshalJSON function for formatter
+func MarshalJSON(x interface{}) ([]byte, error) {
+	m, err := marshalMap(x)
+	if err != nil {
+		return nil, err
+	}
+	return json.Marshal(m)
+}
+
+// marshalMap marshals x to map[string]interface{}
+func marshalMap(x interface{}) (map[string]interface{}, error) {
+	val := reflect.ValueOf(x)
+	if val.Kind() != reflect.Ptr {
+		return nil, errors.Errorf("expected a pointer to a struct, got %v", val.Kind())
+	}
+	if val.IsNil() {
+		return nil, errors.Errorf("expected a pointer to a struct, got nil pointer")
+	}
+	valElem := val.Elem()
+	if valElem.Kind() != reflect.Struct {
+		return nil, errors.Errorf("expected a pointer to a struct, got a pointer to %v", valElem.Kind())
+	}
+	typ := val.Type()
+	m := make(map[string]interface{})
+	for i := 0; i < val.NumMethod(); i++ {
+		k, v, err := marshalForMethod(typ.Method(i), val.Method(i))
+		if err != nil {
+			return nil, err
+		}
+		if k != "" {
+			m[k] = v
+		}
+	}
+	return m, nil
+}
+
+var unmarshallableNames = map[string]struct{}{"FullHeader": {}}
+
+// marshalForMethod returns the map key and the map value for marshalling the method.
+// It returns ("", nil, nil) for valid but non-marshallable parameter. (e.g. "unexportedFunc()")
+func marshalForMethod(typ reflect.Method, val reflect.Value) (string, interface{}, error) {
+	if val.Kind() != reflect.Func {
+		return "", nil, errors.Errorf("expected func, got %v", val.Kind())
+	}
+	name, numIn, numOut := typ.Name, val.Type().NumIn(), val.Type().NumOut()
+	_, blackListed := unmarshallableNames[name]
+	// FIXME: In text/template, (numOut == 2) is marshallable,
+	//        if the type of the second param is error.
+	marshallable := unicode.IsUpper(rune(name[0])) && !blackListed &&
+		numIn == 0 && numOut == 1
+	if !marshallable {
+		return "", nil, nil
+	}
+	result := val.Call(make([]reflect.Value, numIn))
+	intf := result[0].Interface()
+	return name, intf, nil
+}

vendor/github.com/docker/cli/cli/command/formatter/tabwriter/tabwriter.go

@@ -0,0 +1,604 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package tabwriter implements a write filter (tabwriter.Writer) that
+// translates tabbed columns in input into properly aligned text.
+//
+// The package is using the Elastic Tabstops algorithm described at
+// http://nickgravgaard.com/elastictabstops/index.html.
+//
+// The text/tabwriter package is frozen and is not accepting new features.
+
+// based on https://github.com/golang/go/blob/master/src/text/tabwriter/tabwriter.go Last modified 690ac40 on 31 Jan
+
+//nolint:gocyclo,nakedret,revive,stylecheck,unused // ignore linting errors, so that we can stick close to upstream
+package tabwriter
+
+import (
+	"io"
+
+	"github.com/mattn/go-runewidth"
+)
+
+// ----------------------------------------------------------------------------
+// Filter implementation
+
+// A cell represents a segment of text terminated by tabs or line breaks.
+// The text itself is stored in a separate buffer; cell only describes the
+// segment's size in bytes, its width in runes, and whether it's an htab
+// ('\t') terminated cell.
+type cell struct {
+	size  int  // cell size in bytes
+	width int  // cell width in runes
+	htab  bool // true if the cell is terminated by an htab ('\t')
+}
+
+// A Writer is a filter that inserts padding around tab-delimited
+// columns in its input to align them in the output.
+//
+// The Writer treats incoming bytes as UTF-8-encoded text consisting
+// of cells terminated by horizontal ('\t') or vertical ('\v') tabs,
+// and newline ('\n') or formfeed ('\f') characters; both newline and
+// formfeed act as line breaks.
+//
+// Tab-terminated cells in contiguous lines constitute a column. The
+// Writer inserts padding as needed to make all cells in a column have
+// the same width, effectively aligning the columns. It assumes that
+// all characters have the same width, except for tabs for which a
+// tabwidth must be specified. Column cells must be tab-terminated, not
+// tab-separated: non-tab terminated trailing text at the end of a line
+// forms a cell but that cell is not part of an aligned column.
+// For instance, in this example (where | stands for a horizontal tab):
+//
+//	aaaa|bbb|d
+//	aa  |b  |dd
+//	a   |
+//	aa  |cccc|eee
+//
+// the b and c are in distinct columns (the b column is not contiguous
+// all the way). The d and e are not in a column at all (there's no
+// terminating tab, nor would the column be contiguous).
+//
+// The Writer assumes that all Unicode code points have the same width;
+// this may not be true in some fonts or if the string contains combining
+// characters.
+//
+// If DiscardEmptyColumns is set, empty columns that are terminated
+// entirely by vertical (or "soft") tabs are discarded. Columns
+// terminated by horizontal (or "hard") tabs are not affected by
+// this flag.
+//
+// If a Writer is configured to filter HTML, HTML tags and entities
+// are passed through. The widths of tags and entities are
+// assumed to be zero (tags) and one (entities) for formatting purposes.
+//
+// A segment of text may be escaped by bracketing it with Escape
+// characters. The tabwriter passes escaped text segments through
+// unchanged. In particular, it does not interpret any tabs or line
+// breaks within the segment. If the StripEscape flag is set, the
+// Escape characters are stripped from the output; otherwise they
+// are passed through as well. For the purpose of formatting, the
+// width of the escaped text is always computed excluding the Escape
+// characters.
+//
+// The formfeed character acts like a newline but it also terminates
+// all columns in the current line (effectively calling Flush). Tab-
+// terminated cells in the next line start new columns. Unless found
+// inside an HTML tag or inside an escaped text segment, formfeed
+// characters appear as newlines in the output.
+//
+// The Writer must buffer input internally, because proper spacing
+// of one line may depend on the cells in future lines. Clients must
+// call Flush when done calling Write.
+type Writer struct {
+	// configuration
+	output   io.Writer
+	minwidth int
+	tabwidth int
+	padding  int
+	padbytes [8]byte
+	flags    uint
+
+	// current state
+	buf     []byte   // collected text excluding tabs or line breaks
+	pos     int      // buffer position up to which cell.width of incomplete cell has been computed
+	cell    cell     // current incomplete cell; cell.width is up to buf[pos] excluding ignored sections
+	endChar byte     // terminating char of escaped sequence (Escape for escapes, '>', ';' for HTML tags/entities, or 0)
+	lines   [][]cell // list of lines; each line is a list of cells
+	widths  []int    // list of column widths in runes - re-used during formatting
+}
+
+// addLine adds a new line.
+// flushed is a hint indicating whether the underlying writer was just flushed.
+// If so, the previous line is not likely to be a good indicator of the new line's cells.
+func (b *Writer) addLine(flushed bool) {
+	// Grow slice instead of appending,
+	// as that gives us an opportunity
+	// to re-use an existing []cell.
+	if n := len(b.lines) + 1; n <= cap(b.lines) {
+		b.lines = b.lines[:n]
+		b.lines[n-1] = b.lines[n-1][:0]
+	} else {
+		b.lines = append(b.lines, nil)
+	}
+
+	if !flushed {
+		// The previous line is probably a good indicator
+		// of how many cells the current line will have.
+		// If the current line's capacity is smaller than that,
+		// abandon it and make a new one.
+		if n := len(b.lines); n >= 2 {
+			if prev := len(b.lines[n-2]); prev > cap(b.lines[n-1]) {
+				b.lines[n-1] = make([]cell, 0, prev)
+			}
+		}
+	}
+}
+
+// Reset the current state.
+func (b *Writer) reset() {
+	b.buf = b.buf[:0]
+	b.pos = 0
+	b.cell = cell{}
+	b.endChar = 0
+	b.lines = b.lines[0:0]
+	b.widths = b.widths[0:0]
+	b.addLine(true)
+}
+
+// Internal representation (current state):
+//
+// - all text written is appended to buf; tabs and line breaks are stripped away
+// - at any given time there is a (possibly empty) incomplete cell at the end
+//   (the cell starts after a tab or line break)
+// - cell.size is the number of bytes belonging to the cell so far
+// - cell.width is text width in runes of that cell from the start of the cell to
+//   position pos; html tags and entities are excluded from this width if html
+//   filtering is enabled
+// - the sizes and widths of processed text are kept in the lines list
+//   which contains a list of cells for each line
+// - the widths list is a temporary list with current widths used during
+//   formatting; it is kept in Writer because it's re-used
+//
+//                    |<---------- size ---------->|
+//                    |                            |
+//                    |<- width ->|<- ignored ->|  |
+//                    |           |             |  |
+// [---processed---tab------------<tag>...</tag>...]
+// ^                  ^                         ^
+// |                  |                         |
+// buf                start of incomplete cell  pos
+
+// Formatting can be controlled with these flags.
+const (
+	// Ignore html tags and treat entities (starting with '&'
+	// and ending in ';') as single characters (width = 1).
+	FilterHTML uint = 1 << iota
+
+	// Strip Escape characters bracketing escaped text segments
+	// instead of passing them through unchanged with the text.
+	StripEscape
+
+	// Force right-alignment of cell content.
+	// Default is left-alignment.
+	AlignRight
+
+	// Handle empty columns as if they were not present in
+	// the input in the first place.
+	DiscardEmptyColumns
+
+	// Always use tabs for indentation columns (i.e., padding of
+	// leading empty cells on the left) independent of padchar.
+	TabIndent
+
+	// Print a vertical bar ('|') between columns (after formatting).
+	// Discarded columns appear as zero-width columns ("||").
+	Debug
+)
+
+// A Writer must be initialized with a call to Init. The first parameter (output)
+// specifies the filter output. The remaining parameters control the formatting:
+//
+//	minwidth	minimal cell width including any padding
+//	tabwidth	width of tab characters (equivalent number of spaces)
+//	padding		padding added to a cell before computing its width
+//	padchar		ASCII char used for padding
+//			if padchar == '\t', the Writer will assume that the
+//			width of a '\t' in the formatted output is tabwidth,
+//			and cells are left-aligned independent of align_left
+//			(for correct-looking results, tabwidth must correspond
+//			to the tab width in the viewer displaying the result)
+//	flags		formatting control
+func (b *Writer) Init(output io.Writer, minwidth, tabwidth, padding int, padchar byte, flags uint) *Writer {
+	if minwidth < 0 || tabwidth < 0 || padding < 0 {
+		panic("negative minwidth, tabwidth, or padding")
+	}
+	b.output = output
+	b.minwidth = minwidth
+	b.tabwidth = tabwidth
+	b.padding = padding
+	for i := range b.padbytes {
+		b.padbytes[i] = padchar
+	}
+	if padchar == '\t' {
+		// tab padding enforces left-alignment
+		flags &^= AlignRight
+	}
+	b.flags = flags
+
+	b.reset()
+
+	return b
+}
+
+// debugging support (keep code around)
+func (b *Writer) dump() {
+	pos := 0
+	for i, line := range b.lines {
+		print("(", i, ") ")
+		for _, c := range line {
+			print("[", string(b.buf[pos:pos+c.size]), "]")
+			pos += c.size
+		}
+		print("\n")
+	}
+	print("\n")
+}
+
+// local error wrapper so we can distinguish errors we want to return
+// as errors from genuine panics (which we don't want to return as errors)
+type osError struct {
+	err error
+}
+
+func (b *Writer) write0(buf []byte) {
+	n, err := b.output.Write(buf)
+	if n != len(buf) && err == nil {
+		err = io.ErrShortWrite
+	}
+	if err != nil {
+		panic(osError{err})
+	}
+}
+
+func (b *Writer) writeN(src []byte, n int) {
+	for n > len(src) {
+		b.write0(src)
+		n -= len(src)
+	}
+	b.write0(src[0:n])
+}
+
+var (
+	newline = []byte{'\n'}
+	tabs    = []byte("\t\t\t\t\t\t\t\t")
+)
+
+func (b *Writer) writePadding(textw, cellw int, useTabs bool) {
+	if b.padbytes[0] == '\t' || useTabs {
+		// padding is done with tabs
+		if b.tabwidth == 0 {
+			return // tabs have no width - can't do any padding
+		}
+		// make cellw the smallest multiple of b.tabwidth
+		cellw = (cellw + b.tabwidth - 1) / b.tabwidth * b.tabwidth
+		n := cellw - textw // amount of padding
+		if n < 0 {
+			panic("internal error")
+		}
+		b.writeN(tabs, (n+b.tabwidth-1)/b.tabwidth)
+		return
+	}
+
+	// padding is done with non-tab characters
+	b.writeN(b.padbytes[0:], cellw-textw)
+}
+
+var vbar = []byte{'|'}
+
+func (b *Writer) writeLines(pos0 int, line0, line1 int) (pos int) {
+	pos = pos0
+	for i := line0; i < line1; i++ {
+		line := b.lines[i]
+
+		// if TabIndent is set, use tabs to pad leading empty cells
+		useTabs := b.flags&TabIndent != 0
+
+		for j, c := range line {
+			if j > 0 && b.flags&Debug != 0 {
+				// indicate column break
+				b.write0(vbar)
+			}
+
+			if c.size == 0 {
+				// empty cell
+				if j < len(b.widths) {
+					b.writePadding(c.width, b.widths[j], useTabs)
+				}
+			} else {
+				// non-empty cell
+				useTabs = false
+				if b.flags&AlignRight == 0 { // align left
+					b.write0(b.buf[pos : pos+c.size])
+					pos += c.size
+					if j < len(b.widths) {
+						b.writePadding(c.width, b.widths[j], false)
+					}
+				} else { // align right
+					if j < len(b.widths) {
+						b.writePadding(c.width, b.widths[j], false)
+					}
+					b.write0(b.buf[pos : pos+c.size])
+					pos += c.size
+				}
+			}
+		}
+
+		if i+1 == len(b.lines) {
+			// last buffered line - we don't have a newline, so just write
+			// any outstanding buffered data
+			b.write0(b.buf[pos : pos+b.cell.size])
+			pos += b.cell.size
+		} else {
+			// not the last line - write newline
+			b.write0(newline)
+		}
+	}
+	return
+}
+
+// Format the text between line0 and line1 (excluding line1); pos
+// is the buffer position corresponding to the beginning of line0.
+// Returns the buffer position corresponding to the beginning of
+// line1 and an error, if any.
+func (b *Writer) format(pos0 int, line0, line1 int) (pos int) {
+	pos = pos0
+	column := len(b.widths)
+	for this := line0; this < line1; this++ {
+		line := b.lines[this]
+
+		if column >= len(line)-1 {
+			continue
+		}
+		// cell exists in this column => this line
+		// has more cells than the previous line
+		// (the last cell per line is ignored because cells are
+		// tab-terminated; the last cell per line describes the
+		// text before the newline/formfeed and does not belong
+		// to a column)
+
+		// print unprinted lines until beginning of block
+		pos = b.writeLines(pos, line0, this)
+		line0 = this
+
+		// column block begin
+		width := b.minwidth // minimal column width
+		discardable := true // true if all cells in this column are empty and "soft"
+		for ; this < line1; this++ {
+			line = b.lines[this]
+			if column >= len(line)-1 {
+				break
+			}
+			// cell exists in this column
+			c := line[column]
+			// update width
+			if w := c.width + b.padding; w > width {
+				width = w
+			}
+			// update discardable
+			if c.width > 0 || c.htab {
+				discardable = false
+			}
+		}
+		// column block end
+
+		// discard empty columns if necessary
+		if discardable && b.flags&DiscardEmptyColumns != 0 {
+			width = 0
+		}
+
+		// format and print all columns to the right of this column
+		// (we know the widths of this column and all columns to the left)
+		b.widths = append(b.widths, width) // push width
+		pos = b.format(pos, line0, this)
+		b.widths = b.widths[0 : len(b.widths)-1] // pop width
+		line0 = this
+	}
+
+	// print unprinted lines until end
+	return b.writeLines(pos, line0, line1)
+}
+
+// Append text to current cell.
+func (b *Writer) append(text []byte) {
+	b.buf = append(b.buf, text...)
+	b.cell.size += len(text)
+}
+
+// Update the cell width.
+func (b *Writer) updateWidth() {
+	b.cell.width += runewidth.StringWidth(string(b.buf[b.pos:]))
+	b.pos = len(b.buf)
+}
+
+// To escape a text segment, bracket it with Escape characters.
+// For instance, the tab in this string "Ignore this tab: \xff\t\xff"
+// does not terminate a cell and constitutes a single character of
+// width one for formatting purposes.
+//
+// The value 0xff was chosen because it cannot appear in a valid UTF-8 sequence.
+const Escape = '\xff'
+
+// Start escaped mode.
+func (b *Writer) startEscape(ch byte) {
+	switch ch {
+	case Escape:
+		b.endChar = Escape
+	case '<':
+		b.endChar = '>'
+	case '&':
+		b.endChar = ';'
+	}
+}
+
+// Terminate escaped mode. If the escaped text was an HTML tag, its width
+// is assumed to be zero for formatting purposes; if it was an HTML entity,
+// its width is assumed to be one. In all other cases, the width is the
+// unicode width of the text.
+func (b *Writer) endEscape() {
+	switch b.endChar {
+	case Escape:
+		b.updateWidth()
+		if b.flags&StripEscape == 0 {
+			b.cell.width -= 2 // don't count the Escape chars
+		}
+	case '>': // tag of zero width
+	case ';':
+		b.cell.width++ // entity, count as one rune
+	}
+	b.pos = len(b.buf)
+	b.endChar = 0
+}
+
+// Terminate the current cell by adding it to the list of cells of the
+// current line. Returns the number of cells in that line.
+func (b *Writer) terminateCell(htab bool) int {
+	b.cell.htab = htab
+	line := &b.lines[len(b.lines)-1]
+	*line = append(*line, b.cell)
+	b.cell = cell{}
+	return len(*line)
+}
+
+func (b *Writer) handlePanic(err *error, op string) {
+	if e := recover(); e != nil {
+		if op == "Flush" {
+			// If Flush ran into a panic, we still need to reset.
+			b.reset()
+		}
+		if nerr, ok := e.(osError); ok {
+			*err = nerr.err
+			return
+		}
+		panic("tabwriter: panic during " + op)
+	}
+}
+
+// Flush should be called after the last call to Write to ensure
+// that any data buffered in the Writer is written to output. Any
+// incomplete escape sequence at the end is considered
+// complete for formatting purposes.
+func (b *Writer) Flush() error {
+	return b.flush()
+}
+
+// flush is the internal version of Flush, with a named return value which we
+// don't want to expose.
+func (b *Writer) flush() (err error) {
+	defer b.handlePanic(&err, "Flush")
+	b.flushNoDefers()
+	return nil
+}
+
+// flushNoDefers is like flush, but without a deferred handlePanic call. This
+// can be called from other methods which already have their own deferred
+// handlePanic calls, such as Write, and avoid the extra defer work.
+func (b *Writer) flushNoDefers() {
+	// add current cell if not empty
+	if b.cell.size > 0 {
+		if b.endChar != 0 {
+			// inside escape - terminate it even if incomplete
+			b.endEscape()
+		}
+		b.terminateCell(false)
+	}
+
+	// format contents of buffer
+	b.format(0, 0, len(b.lines))
+	b.reset()
+}
+
+var hbar = []byte("---\n")
+
+// Write writes buf to the writer b.
+// The only errors returned are ones encountered
+// while writing to the underlying output stream.
+func (b *Writer) Write(buf []byte) (n int, err error) {
+	defer b.handlePanic(&err, "Write")
+
+	// split text into cells
+	n = 0
+	for i, ch := range buf {
+		if b.endChar == 0 {
+			// outside escape
+			switch ch {
+			case '\t', '\v', '\n', '\f':
+				// end of cell
+				b.append(buf[n:i])
+				b.updateWidth()
+				n = i + 1 // ch consumed
+				ncells := b.terminateCell(ch == '\t')
+				if ch == '\n' || ch == '\f' {
+					// terminate line
+					b.addLine(ch == '\f')
+					if ch == '\f' || ncells == 1 {
+						// A '\f' always forces a flush. Otherwise, if the previous
+						// line has only one cell which does not have an impact on
+						// the formatting of the following lines (the last cell per
+						// line is ignored by format()), thus we can flush the
+						// Writer contents.
+						b.flushNoDefers()
+						if ch == '\f' && b.flags&Debug != 0 {
+							// indicate section break
+							b.write0(hbar)
+						}
+					}
+				}
+
+			case Escape:
+				// start of escaped sequence
+				b.append(buf[n:i])
+				b.updateWidth()
+				n = i
+				if b.flags&StripEscape != 0 {
+					n++ // strip Escape
+				}
+				b.startEscape(Escape)
+
+			case '<', '&':
+				// possibly an html tag/entity
+				if b.flags&FilterHTML != 0 {
+					// begin of tag/entity
+					b.append(buf[n:i])
+					b.updateWidth()
+					n = i
+					b.startEscape(ch)
+				}
+			}
+		} else {
+			// inside escape
+			if ch == b.endChar {
+				// end of tag/entity
+				j := i + 1
+				if ch == Escape && b.flags&StripEscape != 0 {
+					j = i // strip Escape
+				}
+				b.append(buf[n:j])
+				n = i + 1 // ch consumed
+				b.endEscape()
+			}
+		}
+	}
+
+	// append leftover text
+	b.append(buf[n:])
+	n = len(buf)
+	return
+}
+
+// NewWriter allocates and initializes a new tabwriter.Writer.
+// The parameters are the same as for the Init function.
+func NewWriter(output io.Writer, minwidth, tabwidth, padding int, padchar byte, flags uint) *Writer {
+	return new(Writer).Init(output, minwidth, tabwidth, padding, padchar, flags)
+}

vendor/github.com/docker/cli/cli/command/formatter/volume.go

@@ -0,0 +1,165 @@
+package formatter
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/docker/docker/api/types/volume"
+	units "github.com/docker/go-units"
+)
+
+const (
+	defaultVolumeQuietFormat = "{{.Name}}"
+	defaultVolumeTableFormat = "table {{.Driver}}\t{{.Name}}"
+
+	idHeader           = "ID"
+	volumeNameHeader   = "VOLUME NAME"
+	mountpointHeader   = "MOUNTPOINT"
+	linksHeader        = "LINKS"
+	groupHeader        = "GROUP"
+	availabilityHeader = "AVAILABILITY"
+	statusHeader       = "STATUS"
+)
+
+// NewVolumeFormat returns a format for use with a volume Context
+func NewVolumeFormat(source string, quiet bool) Format {
+	switch source {
+	case TableFormatKey:
+		if quiet {
+			return defaultVolumeQuietFormat
+		}
+		return defaultVolumeTableFormat
+	case RawFormatKey:
+		if quiet {
+			return `name: {{.Name}}`
+		}
+		return `name: {{.Name}}\ndriver: {{.Driver}}\n`
+	}
+	return Format(source)
+}
+
+// VolumeWrite writes formatted volumes using the Context
+func VolumeWrite(ctx Context, volumes []*volume.Volume) error {
+	render := func(format func(subContext SubContext) error) error {
+		for _, vol := range volumes {
+			if err := format(&volumeContext{v: *vol}); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+	return ctx.Write(newVolumeContext(), render)
+}
+
+type volumeContext struct {
+	HeaderContext
+	v volume.Volume
+}
+
+func newVolumeContext() *volumeContext {
+	volumeCtx := volumeContext{}
+	volumeCtx.Header = SubHeaderContext{
+		"ID":           idHeader,
+		"Name":         volumeNameHeader,
+		"Group":        groupHeader,
+		"Driver":       DriverHeader,
+		"Scope":        ScopeHeader,
+		"Availability": availabilityHeader,
+		"Mountpoint":   mountpointHeader,
+		"Labels":       LabelsHeader,
+		"Links":        linksHeader,
+		"Size":         SizeHeader,
+		"Status":       statusHeader,
+	}
+	return &volumeCtx
+}
+
+func (c *volumeContext) MarshalJSON() ([]byte, error) {
+	return MarshalJSON(c)
+}
+
+func (c *volumeContext) Name() string {
+	return c.v.Name
+}
+
+func (c *volumeContext) Driver() string {
+	return c.v.Driver
+}
+
+func (c *volumeContext) Scope() string {
+	return c.v.Scope
+}
+
+func (c *volumeContext) Mountpoint() string {
+	return c.v.Mountpoint
+}
+
+func (c *volumeContext) Labels() string {
+	if c.v.Labels == nil {
+		return ""
+	}
+
+	var joinLabels []string
+	for k, v := range c.v.Labels {
+		joinLabels = append(joinLabels, k+"="+v)
+	}
+	return strings.Join(joinLabels, ",")
+}
+
+func (c *volumeContext) Label(name string) string {
+	if c.v.Labels == nil {
+		return ""
+	}
+	return c.v.Labels[name]
+}
+
+func (c *volumeContext) Links() string {
+	if c.v.UsageData == nil {
+		return "N/A"
+	}
+	return strconv.FormatInt(c.v.UsageData.RefCount, 10)
+}
+
+func (c *volumeContext) Size() string {
+	if c.v.UsageData == nil {
+		return "N/A"
+	}
+	return units.HumanSize(float64(c.v.UsageData.Size))
+}
+
+func (c *volumeContext) Group() string {
+	if c.v.ClusterVolume == nil {
+		return "N/A"
+	}
+
+	return c.v.ClusterVolume.Spec.Group
+}
+
+func (c *volumeContext) Availability() string {
+	if c.v.ClusterVolume == nil {
+		return "N/A"
+	}
+
+	return string(c.v.ClusterVolume.Spec.Availability)
+}
+
+func (c *volumeContext) Status() string {
+	if c.v.ClusterVolume == nil {
+		return "N/A"
+	}
+
+	if c.v.ClusterVolume.Info == nil || c.v.ClusterVolume.Info.VolumeID == "" {
+		return "pending creation"
+	}
+
+	l := len(c.v.ClusterVolume.PublishStatus)
+	switch l {
+	case 0:
+		return "created"
+	case 1:
+		return "in use (1 node)"
+	default:
+		return fmt.Sprintf("in use (%d nodes)", l)
+	}
+}

vendor/github.com/docker/cli/templates/templates.go

@@ -0,0 +1,96 @@
+package templates
+
+import (
+	"bytes"
+	"encoding/json"
+	"strings"
+	"text/template"
+)
+
+// basicFunctions are the set of initial
+// functions provided to every template.
+var basicFunctions = template.FuncMap{
+	"json": func(v interface{}) string {
+		buf := &bytes.Buffer{}
+		enc := json.NewEncoder(buf)
+		enc.SetEscapeHTML(false)
+		enc.Encode(v)
+		// Remove the trailing new line added by the encoder
+		return strings.TrimSpace(buf.String())
+	},
+	"split":    strings.Split,
+	"join":     strings.Join,
+	"title":    strings.Title, //nolint:staticcheck // strings.Title is deprecated, but we only use it for ASCII, so replacing with golang.org/x/text is out of scope
+	"lower":    strings.ToLower,
+	"upper":    strings.ToUpper,
+	"pad":      padWithSpace,
+	"truncate": truncateWithLength,
+}
+
+// HeaderFunctions are used to created headers of a table.
+// This is a replacement of basicFunctions for header generation
+// because we want the header to remain intact.
+// Some functions like `pad` are not overridden (to preserve alignment
+// with the columns).
+var HeaderFunctions = template.FuncMap{
+	"json": func(v string) string {
+		return v
+	},
+	"split": func(v string, _ string) string {
+		// we want the table header to show the name of the column, and not
+		// split the table header itself. Using a different signature
+		// here, and return a string instead of []string
+		return v
+	},
+	"join": func(v string, _ string) string {
+		// table headers are always a string, so use a different signature
+		// for the "join" function (string instead of []string)
+		return v
+	},
+	"title": func(v string) string {
+		return v
+	},
+	"lower": func(v string) string {
+		return v
+	},
+	"upper": func(v string) string {
+		return v
+	},
+	"truncate": func(v string, _ int) string {
+		return v
+	},
+}
+
+// Parse creates a new anonymous template with the basic functions
+// and parses the given format.
+func Parse(format string) (*template.Template, error) {
+	return NewParse("", format)
+}
+
+// New creates a new empty template with the provided tag and built-in
+// template functions.
+func New(tag string) *template.Template {
+	return template.New(tag).Funcs(basicFunctions)
+}
+
+// NewParse creates a new tagged template with the basic functions
+// and parses the given format.
+func NewParse(tag, format string) (*template.Template, error) {
+	return New(tag).Parse(format)
+}
+
+// padWithSpace adds whitespace to the input if the input is non-empty
+func padWithSpace(source string, prefix, suffix int) string {
+	if source == "" {
+		return source
+	}
+	return strings.Repeat(" ", prefix) + source + strings.Repeat(" ", suffix)
+}
+
+// truncateWithLength truncates the source string up to the length provided by the input
+func truncateWithLength(source string, length int) string {
+	if len(source) < length {
+		return source
+	}
+	return source[:length]
+}

vendor/github.com/docker/docker/pkg/stringid/stringid.go

@@ -0,0 +1,73 @@
+// Package stringid provides helper functions for dealing with string identifiers
+package stringid // import "github.com/docker/docker/pkg/stringid"
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"errors"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+const (
+	shortLen = 12
+	fullLen  = 64
+)
+
+var (
+	validShortID = regexp.MustCompile("^[a-f0-9]{12}$")
+	validHex     = regexp.MustCompile(`^[a-f0-9]{64}$`)
+)
+
+// IsShortID determines if id has the correct format and length for a short ID.
+// It checks the IDs length and if it consists of valid characters for IDs (a-f0-9).
+func IsShortID(id string) bool {
+	if len(id) != shortLen {
+		return false
+	}
+	return validShortID.MatchString(id)
+}
+
+// TruncateID returns a shorthand version of a string identifier for convenience.
+// A collision with other shorthands is very unlikely, but possible.
+// In case of a collision a lookup with TruncIndex.Get() will fail, and the caller
+// will need to use a longer prefix, or the full-length Id.
+func TruncateID(id string) string {
+	if i := strings.IndexRune(id, ':'); i >= 0 {
+		id = id[i+1:]
+	}
+	if len(id) > shortLen {
+		id = id[:shortLen]
+	}
+	return id
+}
+
+// GenerateRandomID returns a unique id.
+func GenerateRandomID() string {
+	b := make([]byte, 32)
+	for {
+		if _, err := rand.Read(b); err != nil {
+			panic(err) // This shouldn't happen
+		}
+		id := hex.EncodeToString(b)
+		// if we try to parse the truncated for as an int and we don't have
+		// an error then the value is all numeric and causes issues when
+		// used as a hostname. ref #3869
+		if _, err := strconv.ParseInt(TruncateID(id), 10, 64); err == nil {
+			continue
+		}
+		return id
+	}
+}
+
+// ValidateID checks whether an ID string is a valid, full-length image ID.
+func ValidateID(id string) error {
+	if len(id) != fullLen {
+		return errors.New("image ID '" + id + "' is invalid")
+	}
+	if !validHex.MatchString(id) {
+		return errors.New("image ID '" + id + "' is invalid")
+	}
+	return nil
+}

vendor/github.com/mattn/go-runewidth/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 Yasuhiro Matsumoto
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/mattn/go-runewidth/README.md

@@ -0,0 +1,27 @@
+go-runewidth
+============
+
+[![Build Status](https://github.com/mattn/go-runewidth/workflows/test/badge.svg?branch=master)](https://github.com/mattn/go-runewidth/actions?query=workflow%3Atest)
+[![Codecov](https://codecov.io/gh/mattn/go-runewidth/branch/master/graph/badge.svg)](https://codecov.io/gh/mattn/go-runewidth)
+[![GoDoc](https://godoc.org/github.com/mattn/go-runewidth?status.svg)](http://godoc.org/github.com/mattn/go-runewidth)
+[![Go Report Card](https://goreportcard.com/badge/github.com/mattn/go-runewidth)](https://goreportcard.com/report/github.com/mattn/go-runewidth)
+
+Provides functions to get fixed width of the character or string.
+
+Usage
+-----
+
+```go
+runewidth.StringWidth("つのだ☆HIRO") == 12
+```
+
+
+Author
+------
+
+Yasuhiro Matsumoto
+
+License
+-------
+
+under the MIT License: http://mattn.mit-license.org/2013

vendor/github.com/mattn/go-runewidth/runewidth.go

@@ -0,0 +1,358 @@
+package runewidth
+
+import (
+	"os"
+	"strings"
+
+	"github.com/rivo/uniseg"
+)
+
+//go:generate go run script/generate.go
+
+var (
+	// EastAsianWidth will be set true if the current locale is CJK
+	EastAsianWidth bool
+
+	// StrictEmojiNeutral should be set false if handle broken fonts
+	StrictEmojiNeutral bool = true
+
+	// DefaultCondition is a condition in current locale
+	DefaultCondition = &Condition{
+		EastAsianWidth:     false,
+		StrictEmojiNeutral: true,
+	}
+)
+
+func init() {
+	handleEnv()
+}
+
+func handleEnv() {
+	env := os.Getenv("RUNEWIDTH_EASTASIAN")
+	if env == "" {
+		EastAsianWidth = IsEastAsian()
+	} else {
+		EastAsianWidth = env == "1"
+	}
+	// update DefaultCondition
+	if DefaultCondition.EastAsianWidth != EastAsianWidth {
+		DefaultCondition.EastAsianWidth = EastAsianWidth
+		if len(DefaultCondition.combinedLut) > 0 {
+			DefaultCondition.combinedLut = DefaultCondition.combinedLut[:0]
+			CreateLUT()
+		}
+	}
+}
+
+type interval struct {
+	first rune
+	last  rune
+}
+
+type table []interval
+
+func inTables(r rune, ts ...table) bool {
+	for _, t := range ts {
+		if inTable(r, t) {
+			return true
+		}
+	}
+	return false
+}
+
+func inTable(r rune, t table) bool {
+	if r < t[0].first {
+		return false
+	}
+
+	bot := 0
+	top := len(t) - 1
+	for top >= bot {
+		mid := (bot + top) >> 1
+
+		switch {
+		case t[mid].last < r:
+			bot = mid + 1
+		case t[mid].first > r:
+			top = mid - 1
+		default:
+			return true
+		}
+	}
+
+	return false
+}
+
+var private = table{
+	{0x00E000, 0x00F8FF}, {0x0F0000, 0x0FFFFD}, {0x100000, 0x10FFFD},
+}
+
+var nonprint = table{
+	{0x0000, 0x001F}, {0x007F, 0x009F}, {0x00AD, 0x00AD},
+	{0x070F, 0x070F}, {0x180B, 0x180E}, {0x200B, 0x200F},
+	{0x2028, 0x202E}, {0x206A, 0x206F}, {0xD800, 0xDFFF},
+	{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFB}, {0xFFFE, 0xFFFF},
+}
+
+// Condition have flag EastAsianWidth whether the current locale is CJK or not.
+type Condition struct {
+	combinedLut        []byte
+	EastAsianWidth     bool
+	StrictEmojiNeutral bool
+}
+
+// NewCondition return new instance of Condition which is current locale.
+func NewCondition() *Condition {
+	return &Condition{
+		EastAsianWidth:     EastAsianWidth,
+		StrictEmojiNeutral: StrictEmojiNeutral,
+	}
+}
+
+// RuneWidth returns the number of cells in r.
+// See http://www.unicode.org/reports/tr11/
+func (c *Condition) RuneWidth(r rune) int {
+	if r < 0 || r > 0x10FFFF {
+		return 0
+	}
+	if len(c.combinedLut) > 0 {
+		return int(c.combinedLut[r>>1]>>(uint(r&1)*4)) & 3
+	}
+	// optimized version, verified by TestRuneWidthChecksums()
+	if !c.EastAsianWidth {
+		switch {
+		case r < 0x20:
+			return 0
+		case (r >= 0x7F && r <= 0x9F) || r == 0xAD: // nonprint
+			return 0
+		case r < 0x300:
+			return 1
+		case inTable(r, narrow):
+			return 1
+		case inTables(r, nonprint, combining):
+			return 0
+		case inTable(r, doublewidth):
+			return 2
+		default:
+			return 1
+		}
+	} else {
+		switch {
+		case inTables(r, nonprint, combining):
+			return 0
+		case inTable(r, narrow):
+			return 1
+		case inTables(r, ambiguous, doublewidth):
+			return 2
+		case !c.StrictEmojiNeutral && inTables(r, ambiguous, emoji, narrow):
+			return 2
+		default:
+			return 1
+		}
+	}
+}
+
+// CreateLUT will create an in-memory lookup table of 557056 bytes for faster operation.
+// This should not be called concurrently with other operations on c.
+// If options in c is changed, CreateLUT should be called again.
+func (c *Condition) CreateLUT() {
+	const max = 0x110000
+	lut := c.combinedLut
+	if len(c.combinedLut) != 0 {
+		// Remove so we don't use it.
+		c.combinedLut = nil
+	} else {
+		lut = make([]byte, max/2)
+	}
+	for i := range lut {
+		i32 := int32(i * 2)
+		x0 := c.RuneWidth(i32)
+		x1 := c.RuneWidth(i32 + 1)
+		lut[i] = uint8(x0) | uint8(x1)<<4
+	}
+	c.combinedLut = lut
+}
+
+// StringWidth return width as you can see
+func (c *Condition) StringWidth(s string) (width int) {
+	g := uniseg.NewGraphemes(s)
+	for g.Next() {
+		var chWidth int
+		for _, r := range g.Runes() {
+			chWidth = c.RuneWidth(r)
+			if chWidth > 0 {
+				break // Our best guess at this point is to use the width of the first non-zero-width rune.
+			}
+		}
+		width += chWidth
+	}
+	return
+}
+
+// Truncate return string truncated with w cells
+func (c *Condition) Truncate(s string, w int, tail string) string {
+	if c.StringWidth(s) <= w {
+		return s
+	}
+	w -= c.StringWidth(tail)
+	var width int
+	pos := len(s)
+	g := uniseg.NewGraphemes(s)
+	for g.Next() {
+		var chWidth int
+		for _, r := range g.Runes() {
+			chWidth = c.RuneWidth(r)
+			if chWidth > 0 {
+				break // See StringWidth() for details.
+			}
+		}
+		if width+chWidth > w {
+			pos, _ = g.Positions()
+			break
+		}
+		width += chWidth
+	}
+	return s[:pos] + tail
+}
+
+// TruncateLeft cuts w cells from the beginning of the `s`.
+func (c *Condition) TruncateLeft(s string, w int, prefix string) string {
+	if c.StringWidth(s) <= w {
+		return prefix
+	}
+
+	var width int
+	pos := len(s)
+
+	g := uniseg.NewGraphemes(s)
+	for g.Next() {
+		var chWidth int
+		for _, r := range g.Runes() {
+			chWidth = c.RuneWidth(r)
+			if chWidth > 0 {
+				break // See StringWidth() for details.
+			}
+		}
+
+		if width+chWidth > w {
+			if width < w {
+				_, pos = g.Positions()
+				prefix += strings.Repeat(" ", width+chWidth-w)
+			} else {
+				pos, _ = g.Positions()
+			}
+
+			break
+		}
+
+		width += chWidth
+	}
+
+	return prefix + s[pos:]
+}
+
+// Wrap return string wrapped with w cells
+func (c *Condition) Wrap(s string, w int) string {
+	width := 0
+	out := ""
+	for _, r := range s {
+		cw := c.RuneWidth(r)
+		if r == '\n' {
+			out += string(r)
+			width = 0
+			continue
+		} else if width+cw > w {
+			out += "\n"
+			width = 0
+			out += string(r)
+			width += cw
+			continue
+		}
+		out += string(r)
+		width += cw
+	}
+	return out
+}
+
+// FillLeft return string filled in left by spaces in w cells
+func (c *Condition) FillLeft(s string, w int) string {
+	width := c.StringWidth(s)
+	count := w - width
+	if count > 0 {
+		b := make([]byte, count)
+		for i := range b {
+			b[i] = ' '
+		}
+		return string(b) + s
+	}
+	return s
+}
+
+// FillRight return string filled in left by spaces in w cells
+func (c *Condition) FillRight(s string, w int) string {
+	width := c.StringWidth(s)
+	count := w - width
+	if count > 0 {
+		b := make([]byte, count)
+		for i := range b {
+			b[i] = ' '
+		}
+		return s + string(b)
+	}
+	return s
+}
+
+// RuneWidth returns the number of cells in r.
+// See http://www.unicode.org/reports/tr11/
+func RuneWidth(r rune) int {
+	return DefaultCondition.RuneWidth(r)
+}
+
+// IsAmbiguousWidth returns whether is ambiguous width or not.
+func IsAmbiguousWidth(r rune) bool {
+	return inTables(r, private, ambiguous)
+}
+
+// IsNeutralWidth returns whether is neutral width or not.
+func IsNeutralWidth(r rune) bool {
+	return inTable(r, neutral)
+}
+
+// StringWidth return width as you can see
+func StringWidth(s string) (width int) {
+	return DefaultCondition.StringWidth(s)
+}
+
+// Truncate return string truncated with w cells
+func Truncate(s string, w int, tail string) string {
+	return DefaultCondition.Truncate(s, w, tail)
+}
+
+// TruncateLeft cuts w cells from the beginning of the `s`.
+func TruncateLeft(s string, w int, prefix string) string {
+	return DefaultCondition.TruncateLeft(s, w, prefix)
+}
+
+// Wrap return string wrapped with w cells
+func Wrap(s string, w int) string {
+	return DefaultCondition.Wrap(s, w)
+}
+
+// FillLeft return string filled in left by spaces in w cells
+func FillLeft(s string, w int) string {
+	return DefaultCondition.FillLeft(s, w)
+}
+
+// FillRight return string filled in left by spaces in w cells
+func FillRight(s string, w int) string {
+	return DefaultCondition.FillRight(s, w)
+}
+
+// CreateLUT will create an in-memory lookup table of 557055 bytes for faster operation.
+// This should not be called concurrently with other operations.
+func CreateLUT() {
+	if len(DefaultCondition.combinedLut) > 0 {
+		return
+	}
+	DefaultCondition.CreateLUT()
+}

vendor/github.com/mattn/go-runewidth/runewidth_appengine.go

@@ -0,0 +1,9 @@
+//go:build appengine
+// +build appengine
+
+package runewidth
+
+// IsEastAsian return true if the current locale is CJK
+func IsEastAsian() bool {
+	return false
+}

vendor/github.com/mattn/go-runewidth/runewidth_js.go

@@ -0,0 +1,9 @@
+//go:build js && !appengine
+// +build js,!appengine
+
+package runewidth
+
+func IsEastAsian() bool {
+	// TODO: Implement this for the web. Detect east asian in a compatible way, and return true.
+	return false
+}

vendor/github.com/mattn/go-runewidth/runewidth_posix.go

@@ -0,0 +1,81 @@
+//go:build !windows && !js && !appengine
+// +build !windows,!js,!appengine
+
+package runewidth
+
+import (
+	"os"
+	"regexp"
+	"strings"
+)
+
+var reLoc = regexp.MustCompile(`^[a-z][a-z][a-z]?(?:_[A-Z][A-Z])?\.(.+)`)
+
+var mblenTable = map[string]int{
+	"utf-8":   6,
+	"utf8":    6,
+	"jis":     8,
+	"eucjp":   3,
+	"euckr":   2,
+	"euccn":   2,
+	"sjis":    2,
+	"cp932":   2,
+	"cp51932": 2,
+	"cp936":   2,
+	"cp949":   2,
+	"cp950":   2,
+	"big5":    2,
+	"gbk":     2,
+	"gb2312":  2,
+}
+
+func isEastAsian(locale string) bool {
+	charset := strings.ToLower(locale)
+	r := reLoc.FindStringSubmatch(locale)
+	if len(r) == 2 {
+		charset = strings.ToLower(r[1])
+	}
+
+	if strings.HasSuffix(charset, "@cjk_narrow") {
+		return false
+	}
+
+	for pos, b := range []byte(charset) {
+		if b == '@' {
+			charset = charset[:pos]
+			break
+		}
+	}
+	max := 1
+	if m, ok := mblenTable[charset]; ok {
+		max = m
+	}
+	if max > 1 && (charset[0] != 'u' ||
+		strings.HasPrefix(locale, "ja") ||
+		strings.HasPrefix(locale, "ko") ||
+		strings.HasPrefix(locale, "zh")) {
+		return true
+	}
+	return false
+}
+
+// IsEastAsian return true if the current locale is CJK
+func IsEastAsian() bool {
+	locale := os.Getenv("LC_ALL")
+	if locale == "" {
+		locale = os.Getenv("LC_CTYPE")
+	}
+	if locale == "" {
+		locale = os.Getenv("LANG")
+	}
+
+	// ignore C locale
+	if locale == "POSIX" || locale == "C" {
+		return false
+	}
+	if len(locale) > 1 && locale[0] == 'C' && (locale[1] == '.' || locale[1] == '-') {
+		return false
+	}
+
+	return isEastAsian(locale)
+}

vendor/github.com/mattn/go-runewidth/runewidth_table.go

@@ -0,0 +1,439 @@
+// Code generated by script/generate.go. DO NOT EDIT.
+
+package runewidth
+
+var combining = table{
+	{0x0300, 0x036F}, {0x0483, 0x0489}, {0x07EB, 0x07F3},
+	{0x0C00, 0x0C00}, {0x0C04, 0x0C04}, {0x0D00, 0x0D01},
+	{0x135D, 0x135F}, {0x1A7F, 0x1A7F}, {0x1AB0, 0x1AC0},
+	{0x1B6B, 0x1B73}, {0x1DC0, 0x1DF9}, {0x1DFB, 0x1DFF},
+	{0x20D0, 0x20F0}, {0x2CEF, 0x2CF1}, {0x2DE0, 0x2DFF},
+	{0x3099, 0x309A}, {0xA66F, 0xA672}, {0xA674, 0xA67D},
+	{0xA69E, 0xA69F}, {0xA6F0, 0xA6F1}, {0xA8E0, 0xA8F1},
+	{0xFE20, 0xFE2F}, {0x101FD, 0x101FD}, {0x10376, 0x1037A},
+	{0x10EAB, 0x10EAC}, {0x10F46, 0x10F50}, {0x11300, 0x11301},
+	{0x1133B, 0x1133C}, {0x11366, 0x1136C}, {0x11370, 0x11374},
+	{0x16AF0, 0x16AF4}, {0x1D165, 0x1D169}, {0x1D16D, 0x1D172},
+	{0x1D17B, 0x1D182}, {0x1D185, 0x1D18B}, {0x1D1AA, 0x1D1AD},
+	{0x1D242, 0x1D244}, {0x1E000, 0x1E006}, {0x1E008, 0x1E018},
+	{0x1E01B, 0x1E021}, {0x1E023, 0x1E024}, {0x1E026, 0x1E02A},
+	{0x1E8D0, 0x1E8D6},
+}
+
+var doublewidth = table{
+	{0x1100, 0x115F}, {0x231A, 0x231B}, {0x2329, 0x232A},
+	{0x23E9, 0x23EC}, {0x23F0, 0x23F0}, {0x23F3, 0x23F3},
+	{0x25FD, 0x25FE}, {0x2614, 0x2615}, {0x2648, 0x2653},
+	{0x267F, 0x267F}, {0x2693, 0x2693}, {0x26A1, 0x26A1},
+	{0x26AA, 0x26AB}, {0x26BD, 0x26BE}, {0x26C4, 0x26C5},
+	{0x26CE, 0x26CE}, {0x26D4, 0x26D4}, {0x26EA, 0x26EA},
+	{0x26F2, 0x26F3}, {0x26F5, 0x26F5}, {0x26FA, 0x26FA},
+	{0x26FD, 0x26FD}, {0x2705, 0x2705}, {0x270A, 0x270B},
+	{0x2728, 0x2728}, {0x274C, 0x274C}, {0x274E, 0x274E},
+	{0x2753, 0x2755}, {0x2757, 0x2757}, {0x2795, 0x2797},
+	{0x27B0, 0x27B0}, {0x27BF, 0x27BF}, {0x2B1B, 0x2B1C},
+	{0x2B50, 0x2B50}, {0x2B55, 0x2B55}, {0x2E80, 0x2E99},
+	{0x2E9B, 0x2EF3}, {0x2F00, 0x2FD5}, {0x2FF0, 0x2FFB},
+	{0x3000, 0x303E}, {0x3041, 0x3096}, {0x3099, 0x30FF},
+	{0x3105, 0x312F}, {0x3131, 0x318E}, {0x3190, 0x31E3},
+	{0x31F0, 0x321E}, {0x3220, 0x3247}, {0x3250, 0x4DBF},
+	{0x4E00, 0xA48C}, {0xA490, 0xA4C6}, {0xA960, 0xA97C},
+	{0xAC00, 0xD7A3}, {0xF900, 0xFAFF}, {0xFE10, 0xFE19},
+	{0xFE30, 0xFE52}, {0xFE54, 0xFE66}, {0xFE68, 0xFE6B},
+	{0xFF01, 0xFF60}, {0xFFE0, 0xFFE6}, {0x16FE0, 0x16FE4},
+	{0x16FF0, 0x16FF1}, {0x17000, 0x187F7}, {0x18800, 0x18CD5},
+	{0x18D00, 0x18D08}, {0x1B000, 0x1B11E}, {0x1B150, 0x1B152},
+	{0x1B164, 0x1B167}, {0x1B170, 0x1B2FB}, {0x1F004, 0x1F004},
+	{0x1F0CF, 0x1F0CF}, {0x1F18E, 0x1F18E}, {0x1F191, 0x1F19A},
+	{0x1F200, 0x1F202}, {0x1F210, 0x1F23B}, {0x1F240, 0x1F248},
+	{0x1F250, 0x1F251}, {0x1F260, 0x1F265}, {0x1F300, 0x1F320},
+	{0x1F32D, 0x1F335}, {0x1F337, 0x1F37C}, {0x1F37E, 0x1F393},
+	{0x1F3A0, 0x1F3CA}, {0x1F3CF, 0x1F3D3}, {0x1F3E0, 0x1F3F0},
+	{0x1F3F4, 0x1F3F4}, {0x1F3F8, 0x1F43E}, {0x1F440, 0x1F440},
+	{0x1F442, 0x1F4FC}, {0x1F4FF, 0x1F53D}, {0x1F54B, 0x1F54E},
+	{0x1F550, 0x1F567}, {0x1F57A, 0x1F57A}, {0x1F595, 0x1F596},
+	{0x1F5A4, 0x1F5A4}, {0x1F5FB, 0x1F64F}, {0x1F680, 0x1F6C5},
+	{0x1F6CC, 0x1F6CC}, {0x1F6D0, 0x1F6D2}, {0x1F6D5, 0x1F6D7},
+	{0x1F6EB, 0x1F6EC}, {0x1F6F4, 0x1F6FC}, {0x1F7E0, 0x1F7EB},
+	{0x1F90C, 0x1F93A}, {0x1F93C, 0x1F945}, {0x1F947, 0x1F978},
+	{0x1F97A, 0x1F9CB}, {0x1F9CD, 0x1F9FF}, {0x1FA70, 0x1FA74},
+	{0x1FA78, 0x1FA7A}, {0x1FA80, 0x1FA86}, {0x1FA90, 0x1FAA8},
+	{0x1FAB0, 0x1FAB6}, {0x1FAC0, 0x1FAC2}, {0x1FAD0, 0x1FAD6},
+	{0x20000, 0x2FFFD}, {0x30000, 0x3FFFD},
+}
+
+var ambiguous = table{
+	{0x00A1, 0x00A1}, {0x00A4, 0x00A4}, {0x00A7, 0x00A8},
+	{0x00AA, 0x00AA}, {0x00AD, 0x00AE}, {0x00B0, 0x00B4},
+	{0x00B6, 0x00BA}, {0x00BC, 0x00BF}, {0x00C6, 0x00C6},
+	{0x00D0, 0x00D0}, {0x00D7, 0x00D8}, {0x00DE, 0x00E1},
+	{0x00E6, 0x00E6}, {0x00E8, 0x00EA}, {0x00EC, 0x00ED},
+	{0x00F0, 0x00F0}, {0x00F2, 0x00F3}, {0x00F7, 0x00FA},
+	{0x00FC, 0x00FC}, {0x00FE, 0x00FE}, {0x0101, 0x0101},
+	{0x0111, 0x0111}, {0x0113, 0x0113}, {0x011B, 0x011B},
+	{0x0126, 0x0127}, {0x012B, 0x012B}, {0x0131, 0x0133},
+	{0x0138, 0x0138}, {0x013F, 0x0142}, {0x0144, 0x0144},
+	{0x0148, 0x014B}, {0x014D, 0x014D}, {0x0152, 0x0153},
+	{0x0166, 0x0167}, {0x016B, 0x016B}, {0x01CE, 0x01CE},
+	{0x01D0, 0x01D0}, {0x01D2, 0x01D2}, {0x01D4, 0x01D4},
+	{0x01D6, 0x01D6}, {0x01D8, 0x01D8}, {0x01DA, 0x01DA},
+	{0x01DC, 0x01DC}, {0x0251, 0x0251}, {0x0261, 0x0261},
+	{0x02C4, 0x02C4}, {0x02C7, 0x02C7}, {0x02C9, 0x02CB},
+	{0x02CD, 0x02CD}, {0x02D0, 0x02D0}, {0x02D8, 0x02DB},
+	{0x02DD, 0x02DD}, {0x02DF, 0x02DF}, {0x0300, 0x036F},
+	{0x0391, 0x03A1}, {0x03A3, 0x03A9}, {0x03B1, 0x03C1},
+	{0x03C3, 0x03C9}, {0x0401, 0x0401}, {0x0410, 0x044F},
+	{0x0451, 0x0451}, {0x2010, 0x2010}, {0x2013, 0x2016},
+	{0x2018, 0x2019}, {0x201C, 0x201D}, {0x2020, 0x2022},
+	{0x2024, 0x2027}, {0x2030, 0x2030}, {0x2032, 0x2033},
+	{0x2035, 0x2035}, {0x203B, 0x203B}, {0x203E, 0x203E},
+	{0x2074, 0x2074}, {0x207F, 0x207F}, {0x2081, 0x2084},
+	{0x20AC, 0x20AC}, {0x2103, 0x2103}, {0x2105, 0x2105},
+	{0x2109, 0x2109}, {0x2113, 0x2113}, {0x2116, 0x2116},
+	{0x2121, 0x2122}, {0x2126, 0x2126}, {0x212B, 0x212B},
+	{0x2153, 0x2154}, {0x215B, 0x215E}, {0x2160, 0x216B},
+	{0x2170, 0x2179}, {0x2189, 0x2189}, {0x2190, 0x2199},
+	{0x21B8, 0x21B9}, {0x21D2, 0x21D2}, {0x21D4, 0x21D4},
+	{0x21E7, 0x21E7}, {0x2200, 0x2200}, {0x2202, 0x2203},
+	{0x2207, 0x2208}, {0x220B, 0x220B}, {0x220F, 0x220F},
+	{0x2211, 0x2211}, {0x2215, 0x2215}, {0x221A, 0x221A},
+	{0x221D, 0x2220}, {0x2223, 0x2223}, {0x2225, 0x2225},
+	{0x2227, 0x222C}, {0x222E, 0x222E}, {0x2234, 0x2237},
+	{0x223C, 0x223D}, {0x2248, 0x2248}, {0x224C, 0x224C},
+	{0x2252, 0x2252}, {0x2260, 0x2261}, {0x2264, 0x2267},
+	{0x226A, 0x226B}, {0x226E, 0x226F}, {0x2282, 0x2283},
+	{0x2286, 0x2287}, {0x2295, 0x2295}, {0x2299, 0x2299},
+	{0x22A5, 0x22A5}, {0x22BF, 0x22BF}, {0x2312, 0x2312},
+	{0x2460, 0x24E9}, {0x24EB, 0x254B}, {0x2550, 0x2573},
+	{0x2580, 0x258F}, {0x2592, 0x2595}, {0x25A0, 0x25A1},
+	{0x25A3, 0x25A9}, {0x25B2, 0x25B3}, {0x25B6, 0x25B7},
+	{0x25BC, 0x25BD}, {0x25C0, 0x25C1}, {0x25C6, 0x25C8},
+	{0x25CB, 0x25CB}, {0x25CE, 0x25D1}, {0x25E2, 0x25E5},
+	{0x25EF, 0x25EF}, {0x2605, 0x2606}, {0x2609, 0x2609},
+	{0x260E, 0x260F}, {0x261C, 0x261C}, {0x261E, 0x261E},
+	{0x2640, 0x2640}, {0x2642, 0x2642}, {0x2660, 0x2661},
+	{0x2663, 0x2665}, {0x2667, 0x266A}, {0x266C, 0x266D},
+	{0x266F, 0x266F}, {0x269E, 0x269F}, {0x26BF, 0x26BF},
+	{0x26C6, 0x26CD}, {0x26CF, 0x26D3}, {0x26D5, 0x26E1},
+	{0x26E3, 0x26E3}, {0x26E8, 0x26E9}, {0x26EB, 0x26F1},
+	{0x26F4, 0x26F4}, {0x26F6, 0x26F9}, {0x26FB, 0x26FC},
+	{0x26FE, 0x26FF}, {0x273D, 0x273D}, {0x2776, 0x277F},
+	{0x2B56, 0x2B59}, {0x3248, 0x324F}, {0xE000, 0xF8FF},
+	{0xFE00, 0xFE0F}, {0xFFFD, 0xFFFD}, {0x1F100, 0x1F10A},
+	{0x1F110, 0x1F12D}, {0x1F130, 0x1F169}, {0x1F170, 0x1F18D},
+	{0x1F18F, 0x1F190}, {0x1F19B, 0x1F1AC}, {0xE0100, 0xE01EF},
+	{0xF0000, 0xFFFFD}, {0x100000, 0x10FFFD},
+}
+var narrow = table{
+	{0x0020, 0x007E}, {0x00A2, 0x00A3}, {0x00A5, 0x00A6},
+	{0x00AC, 0x00AC}, {0x00AF, 0x00AF}, {0x27E6, 0x27ED},
+	{0x2985, 0x2986},
+}
+
+var neutral = table{
+	{0x0000, 0x001F}, {0x007F, 0x00A0}, {0x00A9, 0x00A9},
+	{0x00AB, 0x00AB}, {0x00B5, 0x00B5}, {0x00BB, 0x00BB},
+	{0x00C0, 0x00C5}, {0x00C7, 0x00CF}, {0x00D1, 0x00D6},
+	{0x00D9, 0x00DD}, {0x00E2, 0x00E5}, {0x00E7, 0x00E7},
+	{0x00EB, 0x00EB}, {0x00EE, 0x00EF}, {0x00F1, 0x00F1},
+	{0x00F4, 0x00F6}, {0x00FB, 0x00FB}, {0x00FD, 0x00FD},
+	{0x00FF, 0x0100}, {0x0102, 0x0110}, {0x0112, 0x0112},
+	{0x0114, 0x011A}, {0x011C, 0x0125}, {0x0128, 0x012A},
+	{0x012C, 0x0130}, {0x0134, 0x0137}, {0x0139, 0x013E},
+	{0x0143, 0x0143}, {0x0145, 0x0147}, {0x014C, 0x014C},
+	{0x014E, 0x0151}, {0x0154, 0x0165}, {0x0168, 0x016A},
+	{0x016C, 0x01CD}, {0x01CF, 0x01CF}, {0x01D1, 0x01D1},
+	{0x01D3, 0x01D3}, {0x01D5, 0x01D5}, {0x01D7, 0x01D7},
+	{0x01D9, 0x01D9}, {0x01DB, 0x01DB}, {0x01DD, 0x0250},
+	{0x0252, 0x0260}, {0x0262, 0x02C3}, {0x02C5, 0x02C6},
+	{0x02C8, 0x02C8}, {0x02CC, 0x02CC}, {0x02CE, 0x02CF},
+	{0x02D1, 0x02D7}, {0x02DC, 0x02DC}, {0x02DE, 0x02DE},
+	{0x02E0, 0x02FF}, {0x0370, 0x0377}, {0x037A, 0x037F},
+	{0x0384, 0x038A}, {0x038C, 0x038C}, {0x038E, 0x0390},
+	{0x03AA, 0x03B0}, {0x03C2, 0x03C2}, {0x03CA, 0x0400},
+	{0x0402, 0x040F}, {0x0450, 0x0450}, {0x0452, 0x052F},
+	{0x0531, 0x0556}, {0x0559, 0x058A}, {0x058D, 0x058F},
+	{0x0591, 0x05C7}, {0x05D0, 0x05EA}, {0x05EF, 0x05F4},
+	{0x0600, 0x061C}, {0x061E, 0x070D}, {0x070F, 0x074A},
+	{0x074D, 0x07B1}, {0x07C0, 0x07FA}, {0x07FD, 0x082D},
+	{0x0830, 0x083E}, {0x0840, 0x085B}, {0x085E, 0x085E},
+	{0x0860, 0x086A}, {0x08A0, 0x08B4}, {0x08B6, 0x08C7},
+	{0x08D3, 0x0983}, {0x0985, 0x098C}, {0x098F, 0x0990},
+	{0x0993, 0x09A8}, {0x09AA, 0x09B0}, {0x09B2, 0x09B2},
+	{0x09B6, 0x09B9}, {0x09BC, 0x09C4}, {0x09C7, 0x09C8},
+	{0x09CB, 0x09CE}, {0x09D7, 0x09D7}, {0x09DC, 0x09DD},
+	{0x09DF, 0x09E3}, {0x09E6, 0x09FE}, {0x0A01, 0x0A03},
+	{0x0A05, 0x0A0A}, {0x0A0F, 0x0A10}, {0x0A13, 0x0A28},
+	{0x0A2A, 0x0A30}, {0x0A32, 0x0A33}, {0x0A35, 0x0A36},
+	{0x0A38, 0x0A39}, {0x0A3C, 0x0A3C}, {0x0A3E, 0x0A42},
+	{0x0A47, 0x0A48}, {0x0A4B, 0x0A4D}, {0x0A51, 0x0A51},
+	{0x0A59, 0x0A5C}, {0x0A5E, 0x0A5E}, {0x0A66, 0x0A76},
+	{0x0A81, 0x0A83}, {0x0A85, 0x0A8D}, {0x0A8F, 0x0A91},
+	{0x0A93, 0x0AA8}, {0x0AAA, 0x0AB0}, {0x0AB2, 0x0AB3},
+	{0x0AB5, 0x0AB9}, {0x0ABC, 0x0AC5}, {0x0AC7, 0x0AC9},
+	{0x0ACB, 0x0ACD}, {0x0AD0, 0x0AD0}, {0x0AE0, 0x0AE3},
+	{0x0AE6, 0x0AF1}, {0x0AF9, 0x0AFF}, {0x0B01, 0x0B03},
+	{0x0B05, 0x0B0C}, {0x0B0F, 0x0B10}, {0x0B13, 0x0B28},
+	{0x0B2A, 0x0B30}, {0x0B32, 0x0B33}, {0x0B35, 0x0B39},
+	{0x0B3C, 0x0B44}, {0x0B47, 0x0B48}, {0x0B4B, 0x0B4D},
+	{0x0B55, 0x0B57}, {0x0B5C, 0x0B5D}, {0x0B5F, 0x0B63},
+	{0x0B66, 0x0B77}, {0x0B82, 0x0B83}, {0x0B85, 0x0B8A},
+	{0x0B8E, 0x0B90}, {0x0B92, 0x0B95}, {0x0B99, 0x0B9A},
+	{0x0B9C, 0x0B9C}, {0x0B9E, 0x0B9F}, {0x0BA3, 0x0BA4},
+	{0x0BA8, 0x0BAA}, {0x0BAE, 0x0BB9}, {0x0BBE, 0x0BC2},
+	{0x0BC6, 0x0BC8}, {0x0BCA, 0x0BCD}, {0x0BD0, 0x0BD0},
+	{0x0BD7, 0x0BD7}, {0x0BE6, 0x0BFA}, {0x0C00, 0x0C0C},
+	{0x0C0E, 0x0C10}, {0x0C12, 0x0C28}, {0x0C2A, 0x0C39},
+	{0x0C3D, 0x0C44}, {0x0C46, 0x0C48}, {0x0C4A, 0x0C4D},
+	{0x0C55, 0x0C56}, {0x0C58, 0x0C5A}, {0x0C60, 0x0C63},
+	{0x0C66, 0x0C6F}, {0x0C77, 0x0C8C}, {0x0C8E, 0x0C90},
+	{0x0C92, 0x0CA8}, {0x0CAA, 0x0CB3}, {0x0CB5, 0x0CB9},
+	{0x0CBC, 0x0CC4}, {0x0CC6, 0x0CC8}, {0x0CCA, 0x0CCD},
+	{0x0CD5, 0x0CD6}, {0x0CDE, 0x0CDE}, {0x0CE0, 0x0CE3},
+	{0x0CE6, 0x0CEF}, {0x0CF1, 0x0CF2}, {0x0D00, 0x0D0C},
+	{0x0D0E, 0x0D10}, {0x0D12, 0x0D44}, {0x0D46, 0x0D48},
+	{0x0D4A, 0x0D4F}, {0x0D54, 0x0D63}, {0x0D66, 0x0D7F},
+	{0x0D81, 0x0D83}, {0x0D85, 0x0D96}, {0x0D9A, 0x0DB1},
+	{0x0DB3, 0x0DBB}, {0x0DBD, 0x0DBD}, {0x0DC0, 0x0DC6},
+	{0x0DCA, 0x0DCA}, {0x0DCF, 0x0DD4}, {0x0DD6, 0x0DD6},
+	{0x0DD8, 0x0DDF}, {0x0DE6, 0x0DEF}, {0x0DF2, 0x0DF4},
+	{0x0E01, 0x0E3A}, {0x0E3F, 0x0E5B}, {0x0E81, 0x0E82},
+	{0x0E84, 0x0E84}, {0x0E86, 0x0E8A}, {0x0E8C, 0x0EA3},
+	{0x0EA5, 0x0EA5}, {0x0EA7, 0x0EBD}, {0x0EC0, 0x0EC4},
+	{0x0EC6, 0x0EC6}, {0x0EC8, 0x0ECD}, {0x0ED0, 0x0ED9},
+	{0x0EDC, 0x0EDF}, {0x0F00, 0x0F47}, {0x0F49, 0x0F6C},
+	{0x0F71, 0x0F97}, {0x0F99, 0x0FBC}, {0x0FBE, 0x0FCC},
+	{0x0FCE, 0x0FDA}, {0x1000, 0x10C5}, {0x10C7, 0x10C7},
+	{0x10CD, 0x10CD}, {0x10D0, 0x10FF}, {0x1160, 0x1248},
+	{0x124A, 0x124D}, {0x1250, 0x1256}, {0x1258, 0x1258},
+	{0x125A, 0x125D}, {0x1260, 0x1288}, {0x128A, 0x128D},
+	{0x1290, 0x12B0}, {0x12B2, 0x12B5}, {0x12B8, 0x12BE},
+	{0x12C0, 0x12C0}, {0x12C2, 0x12C5}, {0x12C8, 0x12D6},
+	{0x12D8, 0x1310}, {0x1312, 0x1315}, {0x1318, 0x135A},
+	{0x135D, 0x137C}, {0x1380, 0x1399}, {0x13A0, 0x13F5},
+	{0x13F8, 0x13FD}, {0x1400, 0x169C}, {0x16A0, 0x16F8},
+	{0x1700, 0x170C}, {0x170E, 0x1714}, {0x1720, 0x1736},
+	{0x1740, 0x1753}, {0x1760, 0x176C}, {0x176E, 0x1770},
+	{0x1772, 0x1773}, {0x1780, 0x17DD}, {0x17E0, 0x17E9},
+	{0x17F0, 0x17F9}, {0x1800, 0x180E}, {0x1810, 0x1819},
+	{0x1820, 0x1878}, {0x1880, 0x18AA}, {0x18B0, 0x18F5},
+	{0x1900, 0x191E}, {0x1920, 0x192B}, {0x1930, 0x193B},
+	{0x1940, 0x1940}, {0x1944, 0x196D}, {0x1970, 0x1974},
+	{0x1980, 0x19AB}, {0x19B0, 0x19C9}, {0x19D0, 0x19DA},
+	{0x19DE, 0x1A1B}, {0x1A1E, 0x1A5E}, {0x1A60, 0x1A7C},
+	{0x1A7F, 0x1A89}, {0x1A90, 0x1A99}, {0x1AA0, 0x1AAD},
+	{0x1AB0, 0x1AC0}, {0x1B00, 0x1B4B}, {0x1B50, 0x1B7C},
+	{0x1B80, 0x1BF3}, {0x1BFC, 0x1C37}, {0x1C3B, 0x1C49},
+	{0x1C4D, 0x1C88}, {0x1C90, 0x1CBA}, {0x1CBD, 0x1CC7},
+	{0x1CD0, 0x1CFA}, {0x1D00, 0x1DF9}, {0x1DFB, 0x1F15},
+	{0x1F18, 0x1F1D}, {0x1F20, 0x1F45}, {0x1F48, 0x1F4D},
+	{0x1F50, 0x1F57}, {0x1F59, 0x1F59}, {0x1F5B, 0x1F5B},
+	{0x1F5D, 0x1F5D}, {0x1F5F, 0x1F7D}, {0x1F80, 0x1FB4},
+	{0x1FB6, 0x1FC4}, {0x1FC6, 0x1FD3}, {0x1FD6, 0x1FDB},
+	{0x1FDD, 0x1FEF}, {0x1FF2, 0x1FF4}, {0x1FF6, 0x1FFE},
+	{0x2000, 0x200F}, {0x2011, 0x2012}, {0x2017, 0x2017},
+	{0x201A, 0x201B}, {0x201E, 0x201F}, {0x2023, 0x2023},
+	{0x2028, 0x202F}, {0x2031, 0x2031}, {0x2034, 0x2034},
+	{0x2036, 0x203A}, {0x203C, 0x203D}, {0x203F, 0x2064},
+	{0x2066, 0x2071}, {0x2075, 0x207E}, {0x2080, 0x2080},
+	{0x2085, 0x208E}, {0x2090, 0x209C}, {0x20A0, 0x20A8},
+	{0x20AA, 0x20AB}, {0x20AD, 0x20BF}, {0x20D0, 0x20F0},
+	{0x2100, 0x2102}, {0x2104, 0x2104}, {0x2106, 0x2108},
+	{0x210A, 0x2112}, {0x2114, 0x2115}, {0x2117, 0x2120},
+	{0x2123, 0x2125}, {0x2127, 0x212A}, {0x212C, 0x2152},
+	{0x2155, 0x215A}, {0x215F, 0x215F}, {0x216C, 0x216F},
+	{0x217A, 0x2188}, {0x218A, 0x218B}, {0x219A, 0x21B7},
+	{0x21BA, 0x21D1}, {0x21D3, 0x21D3}, {0x21D5, 0x21E6},
+	{0x21E8, 0x21FF}, {0x2201, 0x2201}, {0x2204, 0x2206},
+	{0x2209, 0x220A}, {0x220C, 0x220E}, {0x2210, 0x2210},
+	{0x2212, 0x2214}, {0x2216, 0x2219}, {0x221B, 0x221C},
+	{0x2221, 0x2222}, {0x2224, 0x2224}, {0x2226, 0x2226},
+	{0x222D, 0x222D}, {0x222F, 0x2233}, {0x2238, 0x223B},
+	{0x223E, 0x2247}, {0x2249, 0x224B}, {0x224D, 0x2251},
+	{0x2253, 0x225F}, {0x2262, 0x2263}, {0x2268, 0x2269},
+	{0x226C, 0x226D}, {0x2270, 0x2281}, {0x2284, 0x2285},
+	{0x2288, 0x2294}, {0x2296, 0x2298}, {0x229A, 0x22A4},
+	{0x22A6, 0x22BE}, {0x22C0, 0x2311}, {0x2313, 0x2319},
+	{0x231C, 0x2328}, {0x232B, 0x23E8}, {0x23ED, 0x23EF},
+	{0x23F1, 0x23F2}, {0x23F4, 0x2426}, {0x2440, 0x244A},
+	{0x24EA, 0x24EA}, {0x254C, 0x254F}, {0x2574, 0x257F},
+	{0x2590, 0x2591}, {0x2596, 0x259F}, {0x25A2, 0x25A2},
+	{0x25AA, 0x25B1}, {0x25B4, 0x25B5}, {0x25B8, 0x25BB},
+	{0x25BE, 0x25BF}, {0x25C2, 0x25C5}, {0x25C9, 0x25CA},
+	{0x25CC, 0x25CD}, {0x25D2, 0x25E1}, {0x25E6, 0x25EE},
+	{0x25F0, 0x25FC}, {0x25FF, 0x2604}, {0x2607, 0x2608},
+	{0x260A, 0x260D}, {0x2610, 0x2613}, {0x2616, 0x261B},
+	{0x261D, 0x261D}, {0x261F, 0x263F}, {0x2641, 0x2641},
+	{0x2643, 0x2647}, {0x2654, 0x265F}, {0x2662, 0x2662},
+	{0x2666, 0x2666}, {0x266B, 0x266B}, {0x266E, 0x266E},
+	{0x2670, 0x267E}, {0x2680, 0x2692}, {0x2694, 0x269D},
+	{0x26A0, 0x26A0}, {0x26A2, 0x26A9}, {0x26AC, 0x26BC},
+	{0x26C0, 0x26C3}, {0x26E2, 0x26E2}, {0x26E4, 0x26E7},
+	{0x2700, 0x2704}, {0x2706, 0x2709}, {0x270C, 0x2727},
+	{0x2729, 0x273C}, {0x273E, 0x274B}, {0x274D, 0x274D},
+	{0x274F, 0x2752}, {0x2756, 0x2756}, {0x2758, 0x2775},
+	{0x2780, 0x2794}, {0x2798, 0x27AF}, {0x27B1, 0x27BE},
+	{0x27C0, 0x27E5}, {0x27EE, 0x2984}, {0x2987, 0x2B1A},
+	{0x2B1D, 0x2B4F}, {0x2B51, 0x2B54}, {0x2B5A, 0x2B73},
+	{0x2B76, 0x2B95}, {0x2B97, 0x2C2E}, {0x2C30, 0x2C5E},
+	{0x2C60, 0x2CF3}, {0x2CF9, 0x2D25}, {0x2D27, 0x2D27},
+	{0x2D2D, 0x2D2D}, {0x2D30, 0x2D67}, {0x2D6F, 0x2D70},
+	{0x2D7F, 0x2D96}, {0x2DA0, 0x2DA6}, {0x2DA8, 0x2DAE},
+	{0x2DB0, 0x2DB6}, {0x2DB8, 0x2DBE}, {0x2DC0, 0x2DC6},
+	{0x2DC8, 0x2DCE}, {0x2DD0, 0x2DD6}, {0x2DD8, 0x2DDE},
+	{0x2DE0, 0x2E52}, {0x303F, 0x303F}, {0x4DC0, 0x4DFF},
+	{0xA4D0, 0xA62B}, {0xA640, 0xA6F7}, {0xA700, 0xA7BF},
+	{0xA7C2, 0xA7CA}, {0xA7F5, 0xA82C}, {0xA830, 0xA839},
+	{0xA840, 0xA877}, {0xA880, 0xA8C5}, {0xA8CE, 0xA8D9},
+	{0xA8E0, 0xA953}, {0xA95F, 0xA95F}, {0xA980, 0xA9CD},
+	{0xA9CF, 0xA9D9}, {0xA9DE, 0xA9FE}, {0xAA00, 0xAA36},
+	{0xAA40, 0xAA4D}, {0xAA50, 0xAA59}, {0xAA5C, 0xAAC2},
+	{0xAADB, 0xAAF6}, {0xAB01, 0xAB06}, {0xAB09, 0xAB0E},
+	{0xAB11, 0xAB16}, {0xAB20, 0xAB26}, {0xAB28, 0xAB2E},
+	{0xAB30, 0xAB6B}, {0xAB70, 0xABED}, {0xABF0, 0xABF9},
+	{0xD7B0, 0xD7C6}, {0xD7CB, 0xD7FB}, {0xD800, 0xDFFF},
+	{0xFB00, 0xFB06}, {0xFB13, 0xFB17}, {0xFB1D, 0xFB36},
+	{0xFB38, 0xFB3C}, {0xFB3E, 0xFB3E}, {0xFB40, 0xFB41},
+	{0xFB43, 0xFB44}, {0xFB46, 0xFBC1}, {0xFBD3, 0xFD3F},
+	{0xFD50, 0xFD8F}, {0xFD92, 0xFDC7}, {0xFDF0, 0xFDFD},
+	{0xFE20, 0xFE2F}, {0xFE70, 0xFE74}, {0xFE76, 0xFEFC},
+	{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFC}, {0x10000, 0x1000B},
+	{0x1000D, 0x10026}, {0x10028, 0x1003A}, {0x1003C, 0x1003D},
+	{0x1003F, 0x1004D}, {0x10050, 0x1005D}, {0x10080, 0x100FA},
+	{0x10100, 0x10102}, {0x10107, 0x10133}, {0x10137, 0x1018E},
+	{0x10190, 0x1019C}, {0x101A0, 0x101A0}, {0x101D0, 0x101FD},
+	{0x10280, 0x1029C}, {0x102A0, 0x102D0}, {0x102E0, 0x102FB},
+	{0x10300, 0x10323}, {0x1032D, 0x1034A}, {0x10350, 0x1037A},
+	{0x10380, 0x1039D}, {0x1039F, 0x103C3}, {0x103C8, 0x103D5},
+	{0x10400, 0x1049D}, {0x104A0, 0x104A9}, {0x104B0, 0x104D3},
+	{0x104D8, 0x104FB}, {0x10500, 0x10527}, {0x10530, 0x10563},
+	{0x1056F, 0x1056F}, {0x10600, 0x10736}, {0x10740, 0x10755},
+	{0x10760, 0x10767}, {0x10800, 0x10805}, {0x10808, 0x10808},
+	{0x1080A, 0x10835}, {0x10837, 0x10838}, {0x1083C, 0x1083C},
+	{0x1083F, 0x10855}, {0x10857, 0x1089E}, {0x108A7, 0x108AF},
+	{0x108E0, 0x108F2}, {0x108F4, 0x108F5}, {0x108FB, 0x1091B},
+	{0x1091F, 0x10939}, {0x1093F, 0x1093F}, {0x10980, 0x109B7},
+	{0x109BC, 0x109CF}, {0x109D2, 0x10A03}, {0x10A05, 0x10A06},
+	{0x10A0C, 0x10A13}, {0x10A15, 0x10A17}, {0x10A19, 0x10A35},
+	{0x10A38, 0x10A3A}, {0x10A3F, 0x10A48}, {0x10A50, 0x10A58},
+	{0x10A60, 0x10A9F}, {0x10AC0, 0x10AE6}, {0x10AEB, 0x10AF6},
+	{0x10B00, 0x10B35}, {0x10B39, 0x10B55}, {0x10B58, 0x10B72},
+	{0x10B78, 0x10B91}, {0x10B99, 0x10B9C}, {0x10BA9, 0x10BAF},
+	{0x10C00, 0x10C48}, {0x10C80, 0x10CB2}, {0x10CC0, 0x10CF2},
+	{0x10CFA, 0x10D27}, {0x10D30, 0x10D39}, {0x10E60, 0x10E7E},
+	{0x10E80, 0x10EA9}, {0x10EAB, 0x10EAD}, {0x10EB0, 0x10EB1},
+	{0x10F00, 0x10F27}, {0x10F30, 0x10F59}, {0x10FB0, 0x10FCB},
+	{0x10FE0, 0x10FF6}, {0x11000, 0x1104D}, {0x11052, 0x1106F},
+	{0x1107F, 0x110C1}, {0x110CD, 0x110CD}, {0x110D0, 0x110E8},
+	{0x110F0, 0x110F9}, {0x11100, 0x11134}, {0x11136, 0x11147},
+	{0x11150, 0x11176}, {0x11180, 0x111DF}, {0x111E1, 0x111F4},
+	{0x11200, 0x11211}, {0x11213, 0x1123E}, {0x11280, 0x11286},
+	{0x11288, 0x11288}, {0x1128A, 0x1128D}, {0x1128F, 0x1129D},
+	{0x1129F, 0x112A9}, {0x112B0, 0x112EA}, {0x112F0, 0x112F9},
+	{0x11300, 0x11303}, {0x11305, 0x1130C}, {0x1130F, 0x11310},
+	{0x11313, 0x11328}, {0x1132A, 0x11330}, {0x11332, 0x11333},
+	{0x11335, 0x11339}, {0x1133B, 0x11344}, {0x11347, 0x11348},
+	{0x1134B, 0x1134D}, {0x11350, 0x11350}, {0x11357, 0x11357},
+	{0x1135D, 0x11363}, {0x11366, 0x1136C}, {0x11370, 0x11374},
+	{0x11400, 0x1145B}, {0x1145D, 0x11461}, {0x11480, 0x114C7},
+	{0x114D0, 0x114D9}, {0x11580, 0x115B5}, {0x115B8, 0x115DD},
+	{0x11600, 0x11644}, {0x11650, 0x11659}, {0x11660, 0x1166C},
+	{0x11680, 0x116B8}, {0x116C0, 0x116C9}, {0x11700, 0x1171A},
+	{0x1171D, 0x1172B}, {0x11730, 0x1173F}, {0x11800, 0x1183B},
+	{0x118A0, 0x118F2}, {0x118FF, 0x11906}, {0x11909, 0x11909},
+	{0x1190C, 0x11913}, {0x11915, 0x11916}, {0x11918, 0x11935},
+	{0x11937, 0x11938}, {0x1193B, 0x11946}, {0x11950, 0x11959},
+	{0x119A0, 0x119A7}, {0x119AA, 0x119D7}, {0x119DA, 0x119E4},
+	{0x11A00, 0x11A47}, {0x11A50, 0x11AA2}, {0x11AC0, 0x11AF8},
+	{0x11C00, 0x11C08}, {0x11C0A, 0x11C36}, {0x11C38, 0x11C45},
+	{0x11C50, 0x11C6C}, {0x11C70, 0x11C8F}, {0x11C92, 0x11CA7},
+	{0x11CA9, 0x11CB6}, {0x11D00, 0x11D06}, {0x11D08, 0x11D09},
+	{0x11D0B, 0x11D36}, {0x11D3A, 0x11D3A}, {0x11D3C, 0x11D3D},
+	{0x11D3F, 0x11D47}, {0x11D50, 0x11D59}, {0x11D60, 0x11D65},
+	{0x11D67, 0x11D68}, {0x11D6A, 0x11D8E}, {0x11D90, 0x11D91},
+	{0x11D93, 0x11D98}, {0x11DA0, 0x11DA9}, {0x11EE0, 0x11EF8},
+	{0x11FB0, 0x11FB0}, {0x11FC0, 0x11FF1}, {0x11FFF, 0x12399},
+	{0x12400, 0x1246E}, {0x12470, 0x12474}, {0x12480, 0x12543},
+	{0x13000, 0x1342E}, {0x13430, 0x13438}, {0x14400, 0x14646},
+	{0x16800, 0x16A38}, {0x16A40, 0x16A5E}, {0x16A60, 0x16A69},
+	{0x16A6E, 0x16A6F}, {0x16AD0, 0x16AED}, {0x16AF0, 0x16AF5},
+	{0x16B00, 0x16B45}, {0x16B50, 0x16B59}, {0x16B5B, 0x16B61},
+	{0x16B63, 0x16B77}, {0x16B7D, 0x16B8F}, {0x16E40, 0x16E9A},
+	{0x16F00, 0x16F4A}, {0x16F4F, 0x16F87}, {0x16F8F, 0x16F9F},
+	{0x1BC00, 0x1BC6A}, {0x1BC70, 0x1BC7C}, {0x1BC80, 0x1BC88},
+	{0x1BC90, 0x1BC99}, {0x1BC9C, 0x1BCA3}, {0x1D000, 0x1D0F5},
+	{0x1D100, 0x1D126}, {0x1D129, 0x1D1E8}, {0x1D200, 0x1D245},
+	{0x1D2E0, 0x1D2F3}, {0x1D300, 0x1D356}, {0x1D360, 0x1D378},
+	{0x1D400, 0x1D454}, {0x1D456, 0x1D49C}, {0x1D49E, 0x1D49F},
+	{0x1D4A2, 0x1D4A2}, {0x1D4A5, 0x1D4A6}, {0x1D4A9, 0x1D4AC},
+	{0x1D4AE, 0x1D4B9}, {0x1D4BB, 0x1D4BB}, {0x1D4BD, 0x1D4C3},
+	{0x1D4C5, 0x1D505}, {0x1D507, 0x1D50A}, {0x1D50D, 0x1D514},
+	{0x1D516, 0x1D51C}, {0x1D51E, 0x1D539}, {0x1D53B, 0x1D53E},
+	{0x1D540, 0x1D544}, {0x1D546, 0x1D546}, {0x1D54A, 0x1D550},
+	{0x1D552, 0x1D6A5}, {0x1D6A8, 0x1D7CB}, {0x1D7CE, 0x1DA8B},
+	{0x1DA9B, 0x1DA9F}, {0x1DAA1, 0x1DAAF}, {0x1E000, 0x1E006},
+	{0x1E008, 0x1E018}, {0x1E01B, 0x1E021}, {0x1E023, 0x1E024},
+	{0x1E026, 0x1E02A}, {0x1E100, 0x1E12C}, {0x1E130, 0x1E13D},
+	{0x1E140, 0x1E149}, {0x1E14E, 0x1E14F}, {0x1E2C0, 0x1E2F9},
+	{0x1E2FF, 0x1E2FF}, {0x1E800, 0x1E8C4}, {0x1E8C7, 0x1E8D6},
+	{0x1E900, 0x1E94B}, {0x1E950, 0x1E959}, {0x1E95E, 0x1E95F},
+	{0x1EC71, 0x1ECB4}, {0x1ED01, 0x1ED3D}, {0x1EE00, 0x1EE03},
+	{0x1EE05, 0x1EE1F}, {0x1EE21, 0x1EE22}, {0x1EE24, 0x1EE24},
+	{0x1EE27, 0x1EE27}, {0x1EE29, 0x1EE32}, {0x1EE34, 0x1EE37},
+	{0x1EE39, 0x1EE39}, {0x1EE3B, 0x1EE3B}, {0x1EE42, 0x1EE42},
+	{0x1EE47, 0x1EE47}, {0x1EE49, 0x1EE49}, {0x1EE4B, 0x1EE4B},
+	{0x1EE4D, 0x1EE4F}, {0x1EE51, 0x1EE52}, {0x1EE54, 0x1EE54},
+	{0x1EE57, 0x1EE57}, {0x1EE59, 0x1EE59}, {0x1EE5B, 0x1EE5B},
+	{0x1EE5D, 0x1EE5D}, {0x1EE5F, 0x1EE5F}, {0x1EE61, 0x1EE62},
+	{0x1EE64, 0x1EE64}, {0x1EE67, 0x1EE6A}, {0x1EE6C, 0x1EE72},
+	{0x1EE74, 0x1EE77}, {0x1EE79, 0x1EE7C}, {0x1EE7E, 0x1EE7E},
+	{0x1EE80, 0x1EE89}, {0x1EE8B, 0x1EE9B}, {0x1EEA1, 0x1EEA3},
+	{0x1EEA5, 0x1EEA9}, {0x1EEAB, 0x1EEBB}, {0x1EEF0, 0x1EEF1},
+	{0x1F000, 0x1F003}, {0x1F005, 0x1F02B}, {0x1F030, 0x1F093},
+	{0x1F0A0, 0x1F0AE}, {0x1F0B1, 0x1F0BF}, {0x1F0C1, 0x1F0CE},
+	{0x1F0D1, 0x1F0F5}, {0x1F10B, 0x1F10F}, {0x1F12E, 0x1F12F},
+	{0x1F16A, 0x1F16F}, {0x1F1AD, 0x1F1AD}, {0x1F1E6, 0x1F1FF},
+	{0x1F321, 0x1F32C}, {0x1F336, 0x1F336}, {0x1F37D, 0x1F37D},
+	{0x1F394, 0x1F39F}, {0x1F3CB, 0x1F3CE}, {0x1F3D4, 0x1F3DF},
+	{0x1F3F1, 0x1F3F3}, {0x1F3F5, 0x1F3F7}, {0x1F43F, 0x1F43F},
+	{0x1F441, 0x1F441}, {0x1F4FD, 0x1F4FE}, {0x1F53E, 0x1F54A},
+	{0x1F54F, 0x1F54F}, {0x1F568, 0x1F579}, {0x1F57B, 0x1F594},
+	{0x1F597, 0x1F5A3}, {0x1F5A5, 0x1F5FA}, {0x1F650, 0x1F67F},
+	{0x1F6C6, 0x1F6CB}, {0x1F6CD, 0x1F6CF}, {0x1F6D3, 0x1F6D4},
+	{0x1F6E0, 0x1F6EA}, {0x1F6F0, 0x1F6F3}, {0x1F700, 0x1F773},
+	{0x1F780, 0x1F7D8}, {0x1F800, 0x1F80B}, {0x1F810, 0x1F847},
+	{0x1F850, 0x1F859}, {0x1F860, 0x1F887}, {0x1F890, 0x1F8AD},
+	{0x1F8B0, 0x1F8B1}, {0x1F900, 0x1F90B}, {0x1F93B, 0x1F93B},
+	{0x1F946, 0x1F946}, {0x1FA00, 0x1FA53}, {0x1FA60, 0x1FA6D},
+	{0x1FB00, 0x1FB92}, {0x1FB94, 0x1FBCA}, {0x1FBF0, 0x1FBF9},
+	{0xE0001, 0xE0001}, {0xE0020, 0xE007F},
+}
+
+var emoji = table{
+	{0x203C, 0x203C}, {0x2049, 0x2049}, {0x2122, 0x2122},
+	{0x2139, 0x2139}, {0x2194, 0x2199}, {0x21A9, 0x21AA},
+	{0x231A, 0x231B}, {0x2328, 0x2328}, {0x2388, 0x2388},
+	{0x23CF, 0x23CF}, {0x23E9, 0x23F3}, {0x23F8, 0x23FA},
+	{0x24C2, 0x24C2}, {0x25AA, 0x25AB}, {0x25B6, 0x25B6},
+	{0x25C0, 0x25C0}, {0x25FB, 0x25FE}, {0x2600, 0x2605},
+	{0x2607, 0x2612}, {0x2614, 0x2685}, {0x2690, 0x2705},
+	{0x2708, 0x2712}, {0x2714, 0x2714}, {0x2716, 0x2716},
+	{0x271D, 0x271D}, {0x2721, 0x2721}, {0x2728, 0x2728},
+	{0x2733, 0x2734}, {0x2744, 0x2744}, {0x2747, 0x2747},
+	{0x274C, 0x274C}, {0x274E, 0x274E}, {0x2753, 0x2755},
+	{0x2757, 0x2757}, {0x2763, 0x2767}, {0x2795, 0x2797},
+	{0x27A1, 0x27A1}, {0x27B0, 0x27B0}, {0x27BF, 0x27BF},
+	{0x2934, 0x2935}, {0x2B05, 0x2B07}, {0x2B1B, 0x2B1C},
+	{0x2B50, 0x2B50}, {0x2B55, 0x2B55}, {0x3030, 0x3030},
+	{0x303D, 0x303D}, {0x3297, 0x3297}, {0x3299, 0x3299},
+	{0x1F000, 0x1F0FF}, {0x1F10D, 0x1F10F}, {0x1F12F, 0x1F12F},
+	{0x1F16C, 0x1F171}, {0x1F17E, 0x1F17F}, {0x1F18E, 0x1F18E},
+	{0x1F191, 0x1F19A}, {0x1F1AD, 0x1F1E5}, {0x1F201, 0x1F20F},
+	{0x1F21A, 0x1F21A}, {0x1F22F, 0x1F22F}, {0x1F232, 0x1F23A},
+	{0x1F23C, 0x1F23F}, {0x1F249, 0x1F3FA}, {0x1F400, 0x1F53D},
+	{0x1F546, 0x1F64F}, {0x1F680, 0x1F6FF}, {0x1F774, 0x1F77F},
+	{0x1F7D5, 0x1F7FF}, {0x1F80C, 0x1F80F}, {0x1F848, 0x1F84F},
+	{0x1F85A, 0x1F85F}, {0x1F888, 0x1F88F}, {0x1F8AE, 0x1F8FF},
+	{0x1F90C, 0x1F93A}, {0x1F93C, 0x1F945}, {0x1F947, 0x1FAFF},
+	{0x1FC00, 0x1FFFD},
+}

vendor/github.com/mattn/go-runewidth/runewidth_windows.go

@@ -0,0 +1,28 @@
+//go:build windows && !appengine
+// +build windows,!appengine
+
+package runewidth
+
+import (
+	"syscall"
+)
+
+var (
+	kernel32               = syscall.NewLazyDLL("kernel32")
+	procGetConsoleOutputCP = kernel32.NewProc("GetConsoleOutputCP")
+)
+
+// IsEastAsian return true if the current locale is CJK
+func IsEastAsian() bool {
+	r1, _, _ := procGetConsoleOutputCP.Call()
+	if r1 == 0 {
+		return false
+	}
+
+	switch int(r1) {
+	case 932, 51932, 936, 949, 950:
+		return true
+	}
+
+	return false
+}

vendor/github.com/rivo/uniseg/LICENSE.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Oliver Kuederle
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/rivo/uniseg/README.md

@@ -0,0 +1,62 @@
+# Unicode Text Segmentation for Go
+
+[![Godoc Reference](https://img.shields.io/badge/godoc-reference-blue.svg)](https://godoc.org/github.com/rivo/uniseg)
+[![Go Report](https://img.shields.io/badge/go%20report-A%2B-brightgreen.svg)](https://goreportcard.com/report/github.com/rivo/uniseg)
+
+This Go package implements Unicode Text Segmentation according to [Unicode Standard Annex #29](http://unicode.org/reports/tr29/) (Unicode version 12.0.0).
+
+At this point, only the determination of grapheme cluster boundaries is implemented.
+
+## Background
+
+In Go, [strings are read-only slices of bytes](https://blog.golang.org/strings). They can be turned into Unicode code points using the `for` loop or by casting: `[]rune(str)`. However, multiple code points may be combined into one user-perceived character or what the Unicode specification calls "grapheme cluster". Here are some examples:
+
+|String|Bytes (UTF-8)|Code points (runes)|Grapheme clusters|
+|-|-|-|-|
+|Käse|6 bytes: `4b 61 cc 88 73 65`|5 code points: `4b 61 308 73 65`|4 clusters: `[4b],[61 308],[73],[65]`|
+|🏳️‍🌈|14 bytes: `f0 9f 8f b3 ef b8 8f e2 80 8d f0 9f 8c 88`|4 code points: `1f3f3 fe0f 200d 1f308`|1 cluster: `[1f3f3 fe0f 200d 1f308]`|
+|🇩🇪|8 bytes: `f0 9f 87 a9 f0 9f 87 aa`|2 code points: `1f1e9 1f1ea`|1 cluster: `[1f1e9 1f1ea]`|
+
+This package provides a tool to iterate over these grapheme clusters. This may be used to determine the number of user-perceived characters, to split strings in their intended places, or to extract individual characters which form a unit.
+
+## Installation
+
+```bash
+go get github.com/rivo/uniseg
+```
+
+## Basic Example
+
+```go
+package uniseg
+
+import (
+	"fmt"
+
+	"github.com/rivo/uniseg"
+)
+
+func main() {
+	gr := uniseg.NewGraphemes("👍🏼!")
+	for gr.Next() {
+		fmt.Printf("%x ", gr.Runes())
+	}
+	// Output: [1f44d 1f3fc] [21]
+}
+```
+
+## Documentation
+
+Refer to https://godoc.org/github.com/rivo/uniseg for the package's documentation.
+
+## Dependencies
+
+This package does not depend on any packages outside the standard library.
+
+## Your Feedback
+
+Add your issue here on GitHub. Feel free to get in touch if you have any questions.
+
+## Version
+
+Version tags will be introduced once Golang modules are official. Consider this version 0.1.

vendor/github.com/rivo/uniseg/doc.go

@@ -0,0 +1,8 @@
+/*
+Package uniseg implements Unicode Text Segmentation according to Unicode
+Standard Annex #29 (http://unicode.org/reports/tr29/).
+
+At this point, only the determination of grapheme cluster boundaries is
+implemented.
+*/
+package uniseg

vendor/github.com/rivo/uniseg/grapheme.go

@@ -0,0 +1,268 @@
+package uniseg
+
+import "unicode/utf8"
+
+// The states of the grapheme cluster parser.
+const (
+	grAny = iota
+	grCR
+	grControlLF
+	grL
+	grLVV
+	grLVTT
+	grPrepend
+	grExtendedPictographic
+	grExtendedPictographicZWJ
+	grRIOdd
+	grRIEven
+)
+
+// The grapheme cluster parser's breaking instructions.
+const (
+	grNoBoundary = iota
+	grBoundary
+)
+
+// The grapheme cluster parser's state transitions. Maps (state, property) to
+// (new state, breaking instruction, rule number). The breaking instruction
+// always refers to the boundary between the last and next code point.
+//
+// This map is queried as follows:
+//
+//   1. Find specific state + specific property. Stop if found.
+//   2. Find specific state + any property.
+//   3. Find any state + specific property.
+//   4. If only (2) or (3) (but not both) was found, stop.
+//   5. If both (2) and (3) were found, use state and breaking instruction from
+//      the transition with the lower rule number, prefer (3) if rule numbers
+//      are equal. Stop.
+//   6. Assume grAny and grBoundary.
+var grTransitions = map[[2]int][3]int{
+	// GB5
+	{grAny, prCR}:      {grCR, grBoundary, 50},
+	{grAny, prLF}:      {grControlLF, grBoundary, 50},
+	{grAny, prControl}: {grControlLF, grBoundary, 50},
+
+	// GB4
+	{grCR, prAny}:        {grAny, grBoundary, 40},
+	{grControlLF, prAny}: {grAny, grBoundary, 40},
+
+	// GB3.
+	{grCR, prLF}: {grAny, grNoBoundary, 30},
+
+	// GB6.
+	{grAny, prL}: {grL, grBoundary, 9990},
+	{grL, prL}:   {grL, grNoBoundary, 60},
+	{grL, prV}:   {grLVV, grNoBoundary, 60},
+	{grL, prLV}:  {grLVV, grNoBoundary, 60},
+	{grL, prLVT}: {grLVTT, grNoBoundary, 60},
+
+	// GB7.
+	{grAny, prLV}: {grLVV, grBoundary, 9990},
+	{grAny, prV}:  {grLVV, grBoundary, 9990},
+	{grLVV, prV}:  {grLVV, grNoBoundary, 70},
+	{grLVV, prT}:  {grLVTT, grNoBoundary, 70},
+
+	// GB8.
+	{grAny, prLVT}: {grLVTT, grBoundary, 9990},
+	{grAny, prT}:   {grLVTT, grBoundary, 9990},
+	{grLVTT, prT}:  {grLVTT, grNoBoundary, 80},
+
+	// GB9.
+	{grAny, prExtend}: {grAny, grNoBoundary, 90},
+	{grAny, prZWJ}:    {grAny, grNoBoundary, 90},
+
+	// GB9a.
+	{grAny, prSpacingMark}: {grAny, grNoBoundary, 91},
+
+	// GB9b.
+	{grAny, prPreprend}: {grPrepend, grBoundary, 9990},
+	{grPrepend, prAny}:  {grAny, grNoBoundary, 92},
+
+	// GB11.
+	{grAny, prExtendedPictographic}:                     {grExtendedPictographic, grBoundary, 9990},
+	{grExtendedPictographic, prExtend}:                  {grExtendedPictographic, grNoBoundary, 110},
+	{grExtendedPictographic, prZWJ}:                     {grExtendedPictographicZWJ, grNoBoundary, 110},
+	{grExtendedPictographicZWJ, prExtendedPictographic}: {grExtendedPictographic, grNoBoundary, 110},
+
+	// GB12 / GB13.
+	{grAny, prRegionalIndicator}:    {grRIOdd, grBoundary, 9990},
+	{grRIOdd, prRegionalIndicator}:  {grRIEven, grNoBoundary, 120},
+	{grRIEven, prRegionalIndicator}: {grRIOdd, grBoundary, 120},
+}
+
+// Graphemes implements an iterator over Unicode extended grapheme clusters,
+// specified in the Unicode Standard Annex #29. Grapheme clusters correspond to
+// "user-perceived characters". These characters often consist of multiple
+// code points (e.g. the "woman kissing woman" emoji consists of 8 code points:
+// woman + ZWJ + heavy black heart (2 code points) + ZWJ + kiss mark + ZWJ +
+// woman) and the rules described in Annex #29 must be applied to group those
+// code points into clusters perceived by the user as one character.
+type Graphemes struct {
+	// The code points over which this class iterates.
+	codePoints []rune
+
+	// The (byte-based) indices of the code points into the original string plus
+	// len(original string). Thus, len(indices) = len(codePoints) + 1.
+	indices []int
+
+	// The current grapheme cluster to be returned. These are indices into
+	// codePoints/indices. If start == end, we either haven't started iterating
+	// yet (0) or the iteration has already completed (1).
+	start, end int
+
+	// The index of the next code point to be parsed.
+	pos int
+
+	// The current state of the code point parser.
+	state int
+}
+
+// NewGraphemes returns a new grapheme cluster iterator.
+func NewGraphemes(s string) *Graphemes {
+	l := utf8.RuneCountInString(s)
+	codePoints := make([]rune, l)
+	indices := make([]int, l+1)
+	i := 0
+	for pos, r := range s {
+		codePoints[i] = r
+		indices[i] = pos
+		i++
+	}
+	indices[l] = len(s)
+	g := &Graphemes{
+		codePoints: codePoints,
+		indices:    indices,
+	}
+	g.Next() // Parse ahead.
+	return g
+}
+
+// Next advances the iterator by one grapheme cluster and returns false if no
+// clusters are left. This function must be called before the first cluster is
+// accessed.
+func (g *Graphemes) Next() bool {
+	g.start = g.end
+
+	// The state transition gives us a boundary instruction BEFORE the next code
+	// point so we always need to stay ahead by one code point.
+
+	// Parse the next code point.
+	for g.pos <= len(g.codePoints) {
+		// GB2.
+		if g.pos == len(g.codePoints) {
+			g.end = g.pos
+			g.pos++
+			break
+		}
+
+		// Determine the property of the next character.
+		nextProperty := property(g.codePoints[g.pos])
+		g.pos++
+
+		// Find the applicable transition.
+		var boundary bool
+		transition, ok := grTransitions[[2]int{g.state, nextProperty}]
+		if ok {
+			// We have a specific transition. We'll use it.
+			g.state = transition[0]
+			boundary = transition[1] == grBoundary
+		} else {
+			// No specific transition found. Try the less specific ones.
+			transAnyProp, okAnyProp := grTransitions[[2]int{g.state, prAny}]
+			transAnyState, okAnyState := grTransitions[[2]int{grAny, nextProperty}]
+			if okAnyProp && okAnyState {
+				// Both apply. We'll use a mix (see comments for grTransitions).
+				g.state = transAnyState[0]
+				boundary = transAnyState[1] == grBoundary
+				if transAnyProp[2] < transAnyState[2] {
+					g.state = transAnyProp[0]
+					boundary = transAnyProp[1] == grBoundary
+				}
+			} else if okAnyProp {
+				// We only have a specific state.
+				g.state = transAnyProp[0]
+				boundary = transAnyProp[1] == grBoundary
+				// This branch will probably never be reached because okAnyState will
+				// always be true given the current transition map. But we keep it here
+				// for future modifications to the transition map where this may not be
+				// true anymore.
+			} else if okAnyState {
+				// We only have a specific property.
+				g.state = transAnyState[0]
+				boundary = transAnyState[1] == grBoundary
+			} else {
+				// No known transition. GB999: Any x Any.
+				g.state = grAny
+				boundary = true
+			}
+		}
+
+		// If we found a cluster boundary, let's stop here. The current cluster will
+		// be the one that just ended.
+		if g.pos-1 == 0 /* GB1 */ || boundary {
+			g.end = g.pos - 1
+			break
+		}
+	}
+
+	return g.start != g.end
+}
+
+// Runes returns a slice of runes (code points) which corresponds to the current
+// grapheme cluster. If the iterator is already past the end or Next() has not
+// yet been called, nil is returned.
+func (g *Graphemes) Runes() []rune {
+	if g.start == g.end {
+		return nil
+	}
+	return g.codePoints[g.start:g.end]
+}
+
+// Str returns a substring of the original string which corresponds to the
+// current grapheme cluster. If the iterator is already past the end or Next()
+// has not yet been called, an empty string is returned.
+func (g *Graphemes) Str() string {
+	if g.start == g.end {
+		return ""
+	}
+	return string(g.codePoints[g.start:g.end])
+}
+
+// Bytes returns a byte slice which corresponds to the current grapheme cluster.
+// If the iterator is already past the end or Next() has not yet been called,
+// nil is returned.
+func (g *Graphemes) Bytes() []byte {
+	if g.start == g.end {
+		return nil
+	}
+	return []byte(string(g.codePoints[g.start:g.end]))
+}
+
+// Positions returns the interval of the current grapheme cluster as byte
+// positions into the original string. The first returned value "from" indexes
+// the first byte and the second returned value "to" indexes the first byte that
+// is not included anymore, i.e. str[from:to] is the current grapheme cluster of
+// the original string "str". If Next() has not yet been called, both values are
+// 0. If the iterator is already past the end, both values are 1.
+func (g *Graphemes) Positions() (int, int) {
+	return g.indices[g.start], g.indices[g.end]
+}
+
+// Reset puts the iterator into its initial state such that the next call to
+// Next() sets it to the first grapheme cluster again.
+func (g *Graphemes) Reset() {
+	g.start, g.end, g.pos, g.state = 0, 0, 0, grAny
+	g.Next() // Parse ahead again.
+}
+
+// GraphemeClusterCount returns the number of user-perceived characters
+// (grapheme clusters) for the given string. To calculate this number, it
+// iterates through the string using the Graphemes iterator.
+func GraphemeClusterCount(s string) (n int) {
+	g := NewGraphemes(s)
+	for g.Next() {
+		n++
+	}
+	return
+}

vendor/golang.org/x/text/width/kind_string.go

@@ -0,0 +1,28 @@
+// Code generated by "stringer -type=Kind"; DO NOT EDIT.
+
+package width
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[Neutral-0]
+	_ = x[EastAsianAmbiguous-1]
+	_ = x[EastAsianWide-2]
+	_ = x[EastAsianNarrow-3]
+	_ = x[EastAsianFullwidth-4]
+	_ = x[EastAsianHalfwidth-5]
+}
+
+const _Kind_name = "NeutralEastAsianAmbiguousEastAsianWideEastAsianNarrowEastAsianFullwidthEastAsianHalfwidth"
+
+var _Kind_index = [...]uint8{0, 7, 25, 38, 53, 71, 89}
+
+func (i Kind) String() string {
+	if i < 0 || i >= Kind(len(_Kind_index)-1) {
+		return "Kind(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _Kind_name[_Kind_index[i]:_Kind_index[i+1]]
+}

vendor/golang.org/x/text/width/transform.go

@@ -0,0 +1,239 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package width
+
+import (
+	"unicode/utf8"
+
+	"golang.org/x/text/transform"
+)
+
+type foldTransform struct {
+	transform.NopResetter
+}
+
+func (foldTransform) Span(src []byte, atEOF bool) (n int, err error) {
+	for n < len(src) {
+		if src[n] < utf8.RuneSelf {
+			// ASCII fast path.
+			for n++; n < len(src) && src[n] < utf8.RuneSelf; n++ {
+			}
+			continue
+		}
+		v, size := trie.lookup(src[n:])
+		if size == 0 { // incomplete UTF-8 encoding
+			if !atEOF {
+				err = transform.ErrShortSrc
+			} else {
+				n = len(src)
+			}
+			break
+		}
+		if elem(v)&tagNeedsFold != 0 {
+			err = transform.ErrEndOfSpan
+			break
+		}
+		n += size
+	}
+	return n, err
+}
+
+func (foldTransform) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	for nSrc < len(src) {
+		if src[nSrc] < utf8.RuneSelf {
+			// ASCII fast path.
+			start, end := nSrc, len(src)
+			if d := len(dst) - nDst; d < end-start {
+				end = nSrc + d
+			}
+			for nSrc++; nSrc < end && src[nSrc] < utf8.RuneSelf; nSrc++ {
+			}
+			n := copy(dst[nDst:], src[start:nSrc])
+			if nDst += n; nDst == len(dst) {
+				nSrc = start + n
+				if nSrc == len(src) {
+					return nDst, nSrc, nil
+				}
+				if src[nSrc] < utf8.RuneSelf {
+					return nDst, nSrc, transform.ErrShortDst
+				}
+			}
+			continue
+		}
+		v, size := trie.lookup(src[nSrc:])
+		if size == 0 { // incomplete UTF-8 encoding
+			if !atEOF {
+				return nDst, nSrc, transform.ErrShortSrc
+			}
+			size = 1 // gobble 1 byte
+		}
+		if elem(v)&tagNeedsFold == 0 {
+			if size != copy(dst[nDst:], src[nSrc:nSrc+size]) {
+				return nDst, nSrc, transform.ErrShortDst
+			}
+			nDst += size
+		} else {
+			data := inverseData[byte(v)]
+			if len(dst)-nDst < int(data[0]) {
+				return nDst, nSrc, transform.ErrShortDst
+			}
+			i := 1
+			for end := int(data[0]); i < end; i++ {
+				dst[nDst] = data[i]
+				nDst++
+			}
+			dst[nDst] = data[i] ^ src[nSrc+size-1]
+			nDst++
+		}
+		nSrc += size
+	}
+	return nDst, nSrc, nil
+}
+
+type narrowTransform struct {
+	transform.NopResetter
+}
+
+func (narrowTransform) Span(src []byte, atEOF bool) (n int, err error) {
+	for n < len(src) {
+		if src[n] < utf8.RuneSelf {
+			// ASCII fast path.
+			for n++; n < len(src) && src[n] < utf8.RuneSelf; n++ {
+			}
+			continue
+		}
+		v, size := trie.lookup(src[n:])
+		if size == 0 { // incomplete UTF-8 encoding
+			if !atEOF {
+				err = transform.ErrShortSrc
+			} else {
+				n = len(src)
+			}
+			break
+		}
+		if k := elem(v).kind(); byte(v) == 0 || k != EastAsianFullwidth && k != EastAsianWide && k != EastAsianAmbiguous {
+		} else {
+			err = transform.ErrEndOfSpan
+			break
+		}
+		n += size
+	}
+	return n, err
+}
+
+func (narrowTransform) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	for nSrc < len(src) {
+		if src[nSrc] < utf8.RuneSelf {
+			// ASCII fast path.
+			start, end := nSrc, len(src)
+			if d := len(dst) - nDst; d < end-start {
+				end = nSrc + d
+			}
+			for nSrc++; nSrc < end && src[nSrc] < utf8.RuneSelf; nSrc++ {
+			}
+			n := copy(dst[nDst:], src[start:nSrc])
+			if nDst += n; nDst == len(dst) {
+				nSrc = start + n
+				if nSrc == len(src) {
+					return nDst, nSrc, nil
+				}
+				if src[nSrc] < utf8.RuneSelf {
+					return nDst, nSrc, transform.ErrShortDst
+				}
+			}
+			continue
+		}
+		v, size := trie.lookup(src[nSrc:])
+		if size == 0 { // incomplete UTF-8 encoding
+			if !atEOF {
+				return nDst, nSrc, transform.ErrShortSrc
+			}
+			size = 1 // gobble 1 byte
+		}
+		if k := elem(v).kind(); byte(v) == 0 || k != EastAsianFullwidth && k != EastAsianWide && k != EastAsianAmbiguous {
+			if size != copy(dst[nDst:], src[nSrc:nSrc+size]) {
+				return nDst, nSrc, transform.ErrShortDst
+			}
+			nDst += size
+		} else {
+			data := inverseData[byte(v)]
+			if len(dst)-nDst < int(data[0]) {
+				return nDst, nSrc, transform.ErrShortDst
+			}
+			i := 1
+			for end := int(data[0]); i < end; i++ {
+				dst[nDst] = data[i]
+				nDst++
+			}
+			dst[nDst] = data[i] ^ src[nSrc+size-1]
+			nDst++
+		}
+		nSrc += size
+	}
+	return nDst, nSrc, nil
+}
+
+type wideTransform struct {
+	transform.NopResetter
+}
+
+func (wideTransform) Span(src []byte, atEOF bool) (n int, err error) {
+	for n < len(src) {
+		// TODO: Consider ASCII fast path. Special-casing ASCII handling can
+		// reduce the ns/op of BenchmarkWideASCII by about 30%. This is probably
+		// not enough to warrant the extra code and complexity.
+		v, size := trie.lookup(src[n:])
+		if size == 0 { // incomplete UTF-8 encoding
+			if !atEOF {
+				err = transform.ErrShortSrc
+			} else {
+				n = len(src)
+			}
+			break
+		}
+		if k := elem(v).kind(); byte(v) == 0 || k != EastAsianHalfwidth && k != EastAsianNarrow {
+		} else {
+			err = transform.ErrEndOfSpan
+			break
+		}
+		n += size
+	}
+	return n, err
+}
+
+func (wideTransform) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	for nSrc < len(src) {
+		// TODO: Consider ASCII fast path. Special-casing ASCII handling can
+		// reduce the ns/op of BenchmarkWideASCII by about 30%. This is probably
+		// not enough to warrant the extra code and complexity.
+		v, size := trie.lookup(src[nSrc:])
+		if size == 0 { // incomplete UTF-8 encoding
+			if !atEOF {
+				return nDst, nSrc, transform.ErrShortSrc
+			}
+			size = 1 // gobble 1 byte
+		}
+		if k := elem(v).kind(); byte(v) == 0 || k != EastAsianHalfwidth && k != EastAsianNarrow {
+			if size != copy(dst[nDst:], src[nSrc:nSrc+size]) {
+				return nDst, nSrc, transform.ErrShortDst
+			}
+			nDst += size
+		} else {
+			data := inverseData[byte(v)]
+			if len(dst)-nDst < int(data[0]) {
+				return nDst, nSrc, transform.ErrShortDst
+			}
+			i := 1
+			for end := int(data[0]); i < end; i++ {
+				dst[nDst] = data[i]
+				nDst++
+			}
+			dst[nDst] = data[i] ^ src[nSrc+size-1]
+			nDst++
+		}
+		nSrc += size
+	}
+	return nDst, nSrc, nil
+}

vendor/golang.org/x/text/width/trieval.go

@@ -0,0 +1,30 @@
+// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
+
+package width
+
+// elem is an entry of the width trie. The high byte is used to encode the type
+// of the rune. The low byte is used to store the index to a mapping entry in
+// the inverseData array.
+type elem uint16
+
+const (
+	tagNeutral elem = iota << typeShift
+	tagAmbiguous
+	tagWide
+	tagNarrow
+	tagFullwidth
+	tagHalfwidth
+)
+
+const (
+	numTypeBits = 3
+	typeShift   = 16 - numTypeBits
+
+	// tagNeedsFold is true for all fullwidth and halfwidth runes except for
+	// the Won sign U+20A9.
+	tagNeedsFold = 0x1000
+
+	// The Korean Won sign is halfwidth, but SHOULD NOT be mapped to a wide
+	// variant.
+	wonSign rune = 0x20A9
+)

vendor/golang.org/x/text/width/width.go

@@ -0,0 +1,206 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:generate stringer -type=Kind
+//go:generate go run gen.go gen_common.go gen_trieval.go
+
+// Package width provides functionality for handling different widths in text.
+//
+// Wide characters behave like ideographs; they tend to allow line breaks after
+// each character and remain upright in vertical text layout. Narrow characters
+// are kept together in words or runs that are rotated sideways in vertical text
+// layout.
+//
+// For more information, see https://unicode.org/reports/tr11/.
+package width // import "golang.org/x/text/width"
+
+import (
+	"unicode/utf8"
+
+	"golang.org/x/text/transform"
+)
+
+// TODO
+// 1) Reduce table size by compressing blocks.
+// 2) API proposition for computing display length
+//    (approximation, fixed pitch only).
+// 3) Implement display length.
+
+// Kind indicates the type of width property as defined in https://unicode.org/reports/tr11/.
+type Kind int
+
+const (
+	// Neutral characters do not occur in legacy East Asian character sets.
+	Neutral Kind = iota
+
+	// EastAsianAmbiguous characters that can be sometimes wide and sometimes
+	// narrow and require additional information not contained in the character
+	// code to further resolve their width.
+	EastAsianAmbiguous
+
+	// EastAsianWide characters are wide in its usual form. They occur only in
+	// the context of East Asian typography. These runes may have explicit
+	// halfwidth counterparts.
+	EastAsianWide
+
+	// EastAsianNarrow characters are narrow in its usual form. They often have
+	// fullwidth counterparts.
+	EastAsianNarrow
+
+	// Note: there exist Narrow runes that do not have fullwidth or wide
+	// counterparts, despite what the definition says (e.g. U+27E6).
+
+	// EastAsianFullwidth characters have a compatibility decompositions of type
+	// wide that map to a narrow counterpart.
+	EastAsianFullwidth
+
+	// EastAsianHalfwidth characters have a compatibility decomposition of type
+	// narrow that map to a wide or ambiguous counterpart, plus U+20A9 ₩ WON
+	// SIGN.
+	EastAsianHalfwidth
+
+	// Note: there exist runes that have a halfwidth counterparts but that are
+	// classified as Ambiguous, rather than wide (e.g. U+2190).
+)
+
+// TODO: the generated tries need to return size 1 for invalid runes for the
+// width to be computed correctly (each byte should render width 1)
+
+var trie = newWidthTrie(0)
+
+// Lookup reports the Properties of the first rune in b and the number of bytes
+// of its UTF-8 encoding.
+func Lookup(b []byte) (p Properties, size int) {
+	v, sz := trie.lookup(b)
+	return Properties{elem(v), b[sz-1]}, sz
+}
+
+// LookupString reports the Properties of the first rune in s and the number of
+// bytes of its UTF-8 encoding.
+func LookupString(s string) (p Properties, size int) {
+	v, sz := trie.lookupString(s)
+	return Properties{elem(v), s[sz-1]}, sz
+}
+
+// LookupRune reports the Properties of rune r.
+func LookupRune(r rune) Properties {
+	var buf [4]byte
+	n := utf8.EncodeRune(buf[:], r)
+	v, _ := trie.lookup(buf[:n])
+	last := byte(r)
+	if r >= utf8.RuneSelf {
+		last = 0x80 + byte(r&0x3f)
+	}
+	return Properties{elem(v), last}
+}
+
+// Properties provides access to width properties of a rune.
+type Properties struct {
+	elem elem
+	last byte
+}
+
+func (e elem) kind() Kind {
+	return Kind(e >> typeShift)
+}
+
+// Kind returns the Kind of a rune as defined in Unicode TR #11.
+// See https://unicode.org/reports/tr11/ for more details.
+func (p Properties) Kind() Kind {
+	return p.elem.kind()
+}
+
+// Folded returns the folded variant of a rune or 0 if the rune is canonical.
+func (p Properties) Folded() rune {
+	if p.elem&tagNeedsFold != 0 {
+		buf := inverseData[byte(p.elem)]
+		buf[buf[0]] ^= p.last
+		r, _ := utf8.DecodeRune(buf[1 : 1+buf[0]])
+		return r
+	}
+	return 0
+}
+
+// Narrow returns the narrow variant of a rune or 0 if the rune is already
+// narrow or doesn't have a narrow variant.
+func (p Properties) Narrow() rune {
+	if k := p.elem.kind(); byte(p.elem) != 0 && (k == EastAsianFullwidth || k == EastAsianWide || k == EastAsianAmbiguous) {
+		buf := inverseData[byte(p.elem)]
+		buf[buf[0]] ^= p.last
+		r, _ := utf8.DecodeRune(buf[1 : 1+buf[0]])
+		return r
+	}
+	return 0
+}
+
+// Wide returns the wide variant of a rune or 0 if the rune is already
+// wide or doesn't have a wide variant.
+func (p Properties) Wide() rune {
+	if k := p.elem.kind(); byte(p.elem) != 0 && (k == EastAsianHalfwidth || k == EastAsianNarrow) {
+		buf := inverseData[byte(p.elem)]
+		buf[buf[0]] ^= p.last
+		r, _ := utf8.DecodeRune(buf[1 : 1+buf[0]])
+		return r
+	}
+	return 0
+}
+
+// TODO for Properties:
+// - Add Fullwidth/Halfwidth or Inverted methods for computing variants
+// mapping.
+// - Add width information (including information on non-spacing runes).
+
+// Transformer implements the transform.Transformer interface.
+type Transformer struct {
+	t transform.SpanningTransformer
+}
+
+// Reset implements the transform.Transformer interface.
+func (t Transformer) Reset() { t.t.Reset() }
+
+// Transform implements the transform.Transformer interface.
+func (t Transformer) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	return t.t.Transform(dst, src, atEOF)
+}
+
+// Span implements the transform.SpanningTransformer interface.
+func (t Transformer) Span(src []byte, atEOF bool) (n int, err error) {
+	return t.t.Span(src, atEOF)
+}
+
+// Bytes returns a new byte slice with the result of applying t to b.
+func (t Transformer) Bytes(b []byte) []byte {
+	b, _, _ = transform.Bytes(t, b)
+	return b
+}
+
+// String returns a string with the result of applying t to s.
+func (t Transformer) String(s string) string {
+	s, _, _ = transform.String(t, s)
+	return s
+}
+
+var (
+	// Fold is a transform that maps all runes to their canonical width.
+	//
+	// Note that the NFKC and NFKD transforms in golang.org/x/text/unicode/norm
+	// provide a more generic folding mechanism.
+	Fold Transformer = Transformer{foldTransform{}}
+
+	// Widen is a transform that maps runes to their wide variant, if
+	// available.
+	Widen Transformer = Transformer{wideTransform{}}
+
+	// Narrow is a transform that maps runes to their narrow variant, if
+	// available.
+	Narrow Transformer = Transformer{narrowTransform{}}
+)
+
+// TODO: Consider the following options:
+// - Treat Ambiguous runes that have a halfwidth counterpart as wide, or some
+//   generalized variant of this.
+// - Consider a wide Won character to be the default width (or some generalized
+//   variant of this).
+// - Filter the set of characters that gets converted (the preferred approach is
+//   to allow applying filters to transforms).

vendor/modules.txt

@@ -205,6 +205,8 @@ github.com/docker/cli/cli
 github.com/docker/cli/cli-plugins/manager
 github.com/docker/cli/cli-plugins/plugin
 github.com/docker/cli/cli/command
+github.com/docker/cli/cli/command/formatter
+github.com/docker/cli/cli/command/formatter/tabwriter
 github.com/docker/cli/cli/config
 github.com/docker/cli/cli/config/configfile
 github.com/docker/cli/cli/config/credentials
@@ -225,6 +227,7 @@ github.com/docker/cli/cli/streams
 github.com/docker/cli/cli/trust
 github.com/docker/cli/cli/version
 github.com/docker/cli/opts
+github.com/docker/cli/templates
 # github.com/docker/cli-docs-tool v0.6.0
 ## explicit; go 1.18
 github.com/docker/cli-docs-tool
@@ -282,6 +285,7 @@ github.com/docker/docker/pkg/longpath
 github.com/docker/docker/pkg/namesgenerator
 github.com/docker/docker/pkg/pools
 github.com/docker/docker/pkg/stdcopy
+github.com/docker/docker/pkg/stringid
 github.com/docker/docker/pkg/system
 github.com/docker/docker/registry
 # github.com/docker/docker-credential-helpers v0.8.0
@@ -464,6 +468,9 @@ github.com/klauspost/compress/zstd/internal/xxhash
 github.com/mailru/easyjson/buffer
 github.com/mailru/easyjson/jlexer
 github.com/mailru/easyjson/jwriter
+# github.com/mattn/go-runewidth v0.0.15
+## explicit; go 1.9
+github.com/mattn/go-runewidth
 # github.com/mattn/go-shellwords v1.0.12
 ## explicit; go 1.13
 github.com/mattn/go-shellwords
@@ -627,6 +634,9 @@ github.com/prometheus/common/model
 github.com/prometheus/procfs
 github.com/prometheus/procfs/internal/fs
 github.com/prometheus/procfs/internal/util
+# github.com/rivo/uniseg v0.2.0
+## explicit; go 1.12
+github.com/rivo/uniseg
 # github.com/secure-systems-lab/go-securesystemslib v0.4.0
 ## explicit; go 1.17
 github.com/secure-systems-lab/go-securesystemslib/cjson
@@ -819,6 +829,7 @@ golang.org/x/text/secure/bidirule
 golang.org/x/text/transform
 golang.org/x/text/unicode/bidi
 golang.org/x/text/unicode/norm
+golang.org/x/text/width
 # golang.org/x/time v0.3.0
 ## explicit
 golang.org/x/time/rate