reg/help/help.go

package help

import (
    "fmt"

    "reg/internal/i18n"
)

var msgHelp = &i18n.Msg{
    EN: `help — detailed help for a command.

Usage:
  reg help <command>
  reg help <group> <subcommand>

Description:
  Prints detailed description, usage line, flags, notes and examples
  for the specified command.

Groups and commands:
  repo list, repo tree, repo tags, repo info, repo manifest,
  repo delete, repo find, repo latest, repo prune, repo stats, repo verify
  blob info, blob get, blob delete
  image pull, image push, image copy, image config, image files, image history
  manifest rm, manifest tag, manifest untag, manifest exist, manifest digest
  auth login, auth logout, auth status, auth migrate, auth token, auth whoami
  referrer list
  config get, config set, config unset, config list
  export, import
  ping, capabilities
  help

Top-level aliases (short forms) are also available for:
  pull, push, copy, rm, tag, untag, exist, digest,
  login, logout, token, whoami.

Examples:
  reg help repo list
  reg help repo prune
  reg help repo stats
  reg help repo verify
  reg help blob get
  reg help image pull
  reg help image config
  reg help image files
  reg help image history
  reg help manifest rm
  reg help auth login
  reg help auth status
  reg help auth migrate
  reg help referrer list
  reg help config set
  reg help pull           (alias of image pull)
  reg help rm             (alias of manifest rm)
  reg help login          (alias of auth login)
  reg help blob info
  reg help export
`,
    RU: `help — подробная справка по команде.

Использование:
  reg help <command>
  reg help <group> <subcommand>

Описание:
  Выводит подробное описание, строку использования, флаги, нюансы
  и примеры для указанной команды.

Группы и команды:
  repo list, repo tree, repo tags, repo info, repo manifest,
  repo delete, repo find, repo latest, repo prune, repo stats, repo verify
  blob info, blob get, blob delete
  image pull, image push, image copy, image config, image files, image history
  manifest rm, manifest tag, manifest untag, manifest exist, manifest digest
  auth login, auth logout, auth status, auth migrate, auth token, auth whoami
  referrer list
  config get, config set, config unset, config list
  export, import
  ping, capabilities
  help

Алиасы верхнего уровня (короткие формы) для:
  pull, push, copy, rm, tag, untag, exist, digest,
  login, logout, token, whoami.

Примеры:
  reg help repo list
  reg help repo prune
  reg help repo stats
  reg help repo verify
  reg help blob get
  reg help image pull
  reg help image config
  reg help image files
  reg help image history
  reg help manifest rm
  reg help auth login
  reg help auth status
  reg help auth migrate
  reg help referrer list
  reg help config set
  reg help pull           (алиас image pull)
  reg help rm             (алиас manifest rm)
  reg help login          (алиас auth login)
  reg help blob info
  reg help export
`,
}

// Show печатает подробную справку по указанной команде.
func Show(args []string) error {
    switch args[0] {
    case "repo":
        if len(args) < 2 {
            printRepo()
            return nil
        }
        switch args[1] {
        case "list":
            printRepoList()
        case "tree":
            printRepoTree()
        case "tags":
            printRepoTags()
        case "info":
            printRepoInfo()
        case "manifest":
            printRepoManifest()
        case "delete":
            printRepoDelete()
        case "find":
            printRepoFind()
        case "latest":
            printRepoLatest()
        case "prune":
            printRepoPrune()
        case "stats":
            printRepoStats()
        case "verify":
            printRepoVerify()
        default:
            return fmt.Errorf("%s", MsgUnknownRepoSub.F(args[1]))
        }
    case "blob":
        if len(args) < 2 {
            printBlob()
            return nil
        }
        switch args[1] {
        case "info":
            printBlobInfo()
        case "get":
            printBlobGet()
        case "delete":
            printBlobDelete()
        default:
            return fmt.Errorf("%s", MsgUnknownBlobSub.F(args[1]))
        }
    case "image":
        if len(args) < 2 {
            printImage()
            return nil
        }
        switch args[1] {
        case "pull":
            printPull()
        case "push":
            printPush()
        case "copy":
            printCopy()
        case "config":
            printImageConfig()
        case "files":
            printImageFiles()
        case "history":
            printImageHistory()
        default:
            return fmt.Errorf("%s", MsgUnknownImageSub.F(args[1]))
        }
    case "manifest":
        if len(args) < 2 {
            printManifest()
            return nil
        }
        switch args[1] {
        case "rm":
            printRm()
        case "tag":
            printTag()
        case "untag":
            printUntag()
        case "exist":
            printExist()
        case "digest":
            printDigest()
        default:
            return fmt.Errorf("%s", MsgUnknownManifestSub.F(args[1]))
        }
    case "auth":
        if len(args) < 2 {
            printAuth()
            return nil
        }
        switch args[1] {
        case "login":
            printAuthLogin()
        case "logout":
            printAuthLogout()
        case "status":
            printAuthStatus()
        case "migrate":
            printAuthMigrate()
        case "token":
            printToken()
        case "whoami":
            printWhoami()
        default:
            return fmt.Errorf("%s", MsgUnknownAuthSub.F(args[1]))
        }
    case "referrer":
        if len(args) < 2 {
            printReferrer()
            return nil
        }
        switch args[1] {
        case "list":
            printReferrerList()
        default:
            return fmt.Errorf("%s", MsgUnknownReferrerSub.F(args[1]))
        }
    case "config":
        if len(args) < 2 {
            printConfig()
            return nil
        }
        switch args[1] {
        case "get":
            printConfigGet()
        case "set":
            printConfigSet()
        case "unset":
            printConfigUnset()
        case "list":
            printConfigList()
        default:
            return fmt.Errorf("%s", MsgUnknownConfigSub.F(args[1]))
        }
    case "pull":
        printPull()
    case "push":
        printPush()
    case "copy":
        printCopy()
    case "rm":
        printRm()
    case "tag":
        printTag()
    case "untag":
        printUntag()
    case "exist":
        printExist()
    case "digest":
        printDigest()
    case "login":
        printAuthLogin()
    case "logout":
        printAuthLogout()
    case "token":
        printToken()
    case "whoami":
        printWhoami()
    case "export":
        printExport()
    case "import":
        printImport()
    case "ping":
        printPing()
    case "capabilities":
        printCapabilities()
    case "help":
        printHelp()
    default:
        return fmt.Errorf("%s", MsgUnknownCommand.F(args[0]))
    }
    return nil
}

func printHelp() {
    fmt.Print(msgHelp.String())
}