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+/*
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+ Copyright 2020 Docker Compose CLI authors
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+
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+ Licensed under the Apache License, Version 2.0 (the "License");
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+ you may not use this file except in compliance with the License.
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+ You may obtain a copy of the License at
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+
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+ http://www.apache.org/licenses/LICENSE-2.0
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+
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+ Unless required by applicable law or agreed to in writing, software
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+ distributed under the License is distributed on an "AS IS" BASIS,
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+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ See the License for the specific language governing permissions and
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+ limitations under the License.
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+*/
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+
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+package yaml
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+
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+import (
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+ "fmt"
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+ "io"
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+ "os"
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+ "path/filepath"
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+ "sort"
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+ "strings"
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+
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+ "github.com/spf13/cobra"
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+ "github.com/spf13/pflag"
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+ yaml "gopkg.in/yaml.v3"
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+)
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+
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+type cmdOption struct {
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+ Option string
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+ Shorthand string `yaml:",omitempty"`
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+ ValueType string `yaml:"value_type,omitempty"`
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+ DefaultValue string `yaml:"default_value,omitempty"`
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+ Description string `yaml:",omitempty"`
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+ Deprecated bool
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+ MinAPIVersion string `yaml:"min_api_version,omitempty"`
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+ Experimental bool
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+ ExperimentalCLI bool
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+ Kubernetes bool
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+ Swarm bool
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+ OSType string `yaml:"os_type,omitempty"`
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+}
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+
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+type cmdDoc struct {
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+ Name string `yaml:"command"`
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+ SeeAlso []string `yaml:"parent,omitempty"`
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+ Version string `yaml:"engine_version,omitempty"`
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+ Aliases string `yaml:",omitempty"`
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+ Short string `yaml:",omitempty"`
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+ Long string `yaml:",omitempty"`
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+ Usage string `yaml:",omitempty"`
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+ Pname string `yaml:",omitempty"`
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+ Plink string `yaml:",omitempty"`
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+ Cname []string `yaml:",omitempty"`
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+ Clink []string `yaml:",omitempty"`
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+ Options []cmdOption `yaml:",omitempty"`
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+ InheritedOptions []cmdOption `yaml:"inherited_options,omitempty"`
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+ Example string `yaml:"examples,omitempty"`
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+ Deprecated bool
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+ MinAPIVersion string `yaml:"min_api_version,omitempty"`
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+ Experimental bool
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+ ExperimentalCLI bool
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+ Kubernetes bool
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+ Swarm bool
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+ OSType string `yaml:"os_type,omitempty"`
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+}
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+
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+// GenYamlTree creates yaml structured ref files
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+func GenYamlTree(cmd *cobra.Command, dir string) error {
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+ emptyStr := func(s string) string { return "" }
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+ return GenYamlTreeCustom(cmd, dir, emptyStr)
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+}
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+
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+// GenYamlTreeCustom creates yaml structured ref files
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+func GenYamlTreeCustom(cmd *cobra.Command, dir string, filePrepender func(string) string) error {
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+ for _, c := range cmd.Commands() {
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+ if !c.IsAvailableCommand() || c.IsAdditionalHelpTopicCommand() {
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+ continue
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+ }
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+ if err := GenYamlTreeCustom(c, dir, filePrepender); err != nil {
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+ return err
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+ }
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+ }
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+ if !cmd.HasParent() {
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+ return nil
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+ }
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+
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+ basename := strings.Replace(cmd.CommandPath(), " ", "_", -1) + ".yaml"
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+ filename := filepath.Join(dir, basename)
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+ f, err := os.Create(filename)
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+ if err != nil {
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+ return err
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+ }
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+ defer f.Close() //nolint: errcheck
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+
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+ if _, err := io.WriteString(f, filePrepender(filename)); err != nil {
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+ return err
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+ }
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+ return GenYamlCustom(cmd, f)
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+}
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+
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+// GenYamlCustom creates custom yaml output
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+// nolint: gocyclo
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+func GenYamlCustom(cmd *cobra.Command, w io.Writer) error {
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+ cliDoc := cmdDoc{}
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+ cliDoc.Name = cmd.CommandPath()
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+
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+ cliDoc.Aliases = strings.Join(cmd.Aliases, ", ")
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+ cliDoc.Short = cmd.Short
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+ cliDoc.Long = cmd.Long
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+ if len(cliDoc.Long) == 0 {
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+ cliDoc.Long = cliDoc.Short
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+ }
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+
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+ if cmd.Runnable() {
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+ cliDoc.Usage = cmd.UseLine()
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+ }
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+
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+ if len(cmd.Example) > 0 {
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+ cliDoc.Example = cmd.Example
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+ }
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+ if len(cmd.Deprecated) > 0 {
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+ cliDoc.Deprecated = true
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+ }
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+ // Check recursively so that, e.g., `docker stack ls` returns the same output as `docker stack`
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+ for curr := cmd; curr != nil; curr = curr.Parent() {
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+ if v, ok := curr.Annotations["version"]; ok && cliDoc.MinAPIVersion == "" {
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+ cliDoc.MinAPIVersion = v
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+ }
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+ if _, ok := curr.Annotations["experimental"]; ok && !cliDoc.Experimental {
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+ cliDoc.Experimental = true
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+ }
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+ if _, ok := curr.Annotations["experimentalCLI"]; ok && !cliDoc.ExperimentalCLI {
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+ cliDoc.ExperimentalCLI = true
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+ }
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+ if _, ok := curr.Annotations["kubernetes"]; ok && !cliDoc.Kubernetes {
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+ cliDoc.Kubernetes = true
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+ }
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+ if _, ok := curr.Annotations["swarm"]; ok && !cliDoc.Swarm {
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+ cliDoc.Swarm = true
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+ }
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+ if os, ok := curr.Annotations["ostype"]; ok && cliDoc.OSType == "" {
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+ cliDoc.OSType = os
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+ }
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+ }
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+
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+ flags := cmd.NonInheritedFlags()
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+ if flags.HasFlags() {
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+ cliDoc.Options = genFlagResult(flags)
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+ }
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+ flags = cmd.InheritedFlags()
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+ if flags.HasFlags() {
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+ cliDoc.InheritedOptions = genFlagResult(flags)
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+ }
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+
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+ if hasSeeAlso(cmd) {
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+ if cmd.HasParent() {
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+ parent := cmd.Parent()
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+ cliDoc.Pname = parent.CommandPath()
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+ link := cliDoc.Pname + ".yaml"
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+ cliDoc.Plink = strings.Replace(link, " ", "_", -1)
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+ cmd.VisitParents(func(c *cobra.Command) {
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+ if c.DisableAutoGenTag {
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+ cmd.DisableAutoGenTag = c.DisableAutoGenTag
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+ }
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+ })
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+ }
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+
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+ children := cmd.Commands()
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+ sort.Sort(byName(children))
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+
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+ for _, child := range children {
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+ if !child.IsAvailableCommand() || child.IsAdditionalHelpTopicCommand() {
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+ continue
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+ }
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+ currentChild := cliDoc.Name + " " + child.Name()
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+ cliDoc.Cname = append(cliDoc.Cname, cliDoc.Name+" "+child.Name())
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+ link := currentChild + ".yaml"
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+ cliDoc.Clink = append(cliDoc.Clink, strings.Replace(link, " ", "_", -1))
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+ }
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+ }
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+
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+ final, err := yaml.Marshal(&cliDoc)
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+ if err != nil {
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+ fmt.Println(err)
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+ os.Exit(1)
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+ }
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+ if _, err := fmt.Fprintln(w, string(final)); err != nil {
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+ return err
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+ }
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+ return nil
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+}
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+
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+func genFlagResult(flags *pflag.FlagSet) []cmdOption {
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+ var (
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+ result []cmdOption
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+ opt cmdOption
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+ )
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+
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+ flags.VisitAll(func(flag *pflag.Flag) {
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+ opt = cmdOption{
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+ Option: flag.Name,
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+ ValueType: flag.Value.Type(),
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+ DefaultValue: forceMultiLine(flag.DefValue),
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+ Description: forceMultiLine(flag.Usage),
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+ Deprecated: len(flag.Deprecated) > 0,
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+ }
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+
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+ // Todo, when we mark a shorthand is deprecated, but specify an empty message.
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+ // The flag.ShorthandDeprecated is empty as the shorthand is deprecated.
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+ // Using len(flag.ShorthandDeprecated) > 0 can't handle this, others are ok.
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+ if !(len(flag.ShorthandDeprecated) > 0) && len(flag.Shorthand) > 0 {
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+ opt.Shorthand = flag.Shorthand
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+ }
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+ if _, ok := flag.Annotations["experimental"]; ok {
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+ opt.Experimental = true
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+ }
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+ if v, ok := flag.Annotations["version"]; ok {
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+ opt.MinAPIVersion = v[0]
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+ }
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+ if _, ok := flag.Annotations["experimentalCLI"]; ok {
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+ opt.ExperimentalCLI = true
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+ }
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+ if _, ok := flag.Annotations["kubernetes"]; ok {
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+ opt.Kubernetes = true
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+ }
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+ if _, ok := flag.Annotations["swarm"]; ok {
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+ opt.Swarm = true
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+ }
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+
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+ // Note that the annotation can have multiple ostypes set, however, multiple
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+ // values are currently not used (and unlikely will).
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+ //
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+ // To simplify usage of the os_type property in the YAML, and for consistency
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+ // with the same property for commands, we're only using the first ostype that's set.
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+ if ostypes, ok := flag.Annotations["ostype"]; ok && len(opt.OSType) == 0 && len(ostypes) > 0 {
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+ opt.OSType = ostypes[0]
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+ }
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+
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+ result = append(result, opt)
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+ })
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+
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+ return result
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+}
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+
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+// Temporary workaround for yaml lib generating incorrect yaml with long strings
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+// that do not contain \n.
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+func forceMultiLine(s string) string {
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+ if len(s) > 60 && !strings.Contains(s, "\n") {
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+ s = s + "\n"
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+ }
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+ return s
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+}
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+
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+// Small duplication for cobra utils
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+func hasSeeAlso(cmd *cobra.Command) bool {
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+ if cmd.HasParent() {
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+ return true
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+ }
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+ for _, c := range cmd.Commands() {
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+ if !c.IsAvailableCommand() || c.IsAdditionalHelpTopicCommand() {
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+ continue
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+ }
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+ return true
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+ }
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+ return false
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+}
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+
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+// ParseMDContent parse markdown file looking for Description and Examples sections
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+func ParseMDContent(mdString string) (description string, examples string) {
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+ parsedContent := strings.Split(mdString, "\n## ")
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+ for _, s := range parsedContent {
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+ if strings.Index(s, "Description") == 0 {
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+ description = strings.TrimSpace(strings.TrimPrefix(s, "Description"))
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+ }
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+ if strings.Index(s, "Examples") == 0 {
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+ examples = strings.TrimSpace(strings.TrimPrefix(s, "Examples"))
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+ }
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+ }
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+ return description, examples
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+}
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+
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+type byName []*cobra.Command
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+
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+func (s byName) Len() int { return len(s) }
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+func (s byName) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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+func (s byName) Less(i, j int) bool { return s[i].Name() < s[j].Name() }
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