vendor: Add github.com/AudriusButkevicius/cli

2016-12-17 01:32:04 +01:00
parent 81a9d7f2b9
commit 9fdaa637a8
8 changed files with 1393 additions and 0 deletions
--- a/vendor/github.com/AudriusButkevicius/cli/command.go
+++ b/vendor/github.com/AudriusButkevicius/cli/command.go
@@ -0,0 +1,148 @@
+package cli
+
+import (
+	"fmt"
+	"io/ioutil"
+	"strings"
+)
+
+// Command is a subcommand for a cli.App.
+type Command struct {
+	// The name of the command
+	Name string
+	// short name of the command. Typically one character
+	ShortName string
+	// A short description of the usage of this command
+	Usage string
+	// A longer explanation of how the command works
+	Description string
+	// The function to call when checking for bash command completions
+	BashComplete func(context *Context)
+	// An action to execute before any sub-subcommands are run, but after the context is ready
+	// If a non-nil error is returned, no sub-subcommands are run
+	Before func(context *Context) error
+	// The function to call when this command is invoked
+	Action func(context *Context)
+	// List of child commands
+	Subcommands []Command
+	// List of flags to parse
+	Flags []Flag
+	// Treat all flags as normal arguments if true
+	SkipFlagParsing bool
+	// Boolean to hide built-in help command
+	HideHelp bool
+	// Command argument requirements
+	Requires *Requires
+}
+
+// Invokes the command given the context, parses ctx.Args() to generate command-specific flags
+func (c Command) Run(ctx *Context) error {
+
+	if len(c.Subcommands) > 0 || c.Before != nil {
+		return c.startApp(ctx)
+	}
+
+	if !c.HideHelp {
+		// append help to flags
+		c.Flags = append(
+			c.Flags,
+			HelpFlag,
+		)
+	}
+
+	if ctx.App.EnableBashCompletion {
+		c.Flags = append(c.Flags, BashCompletionFlag)
+	}
+
+	set := flagSet(c.Name, c.Flags)
+	set.SetOutput(ioutil.Discard)
+
+	firstFlagIndex := -1
+	for index, arg := range ctx.Args() {
+		if strings.HasPrefix(arg, "-") {
+			firstFlagIndex = index
+			break
+		}
+	}
+
+	var err error
+	if firstFlagIndex > -1 && !c.SkipFlagParsing {
+		args := ctx.Args()
+		regularArgs := args[1:firstFlagIndex]
+		flagArgs := args[firstFlagIndex:]
+		err = set.Parse(append(flagArgs, regularArgs...))
+	} else {
+		err = set.Parse(ctx.Args().Tail())
+	}
+
+	if err != nil {
+		fmt.Printf("Incorrect Usage.\n\n")
+		ShowCommandHelp(ctx, c.Name)
+		fmt.Println("")
+		return err
+	}
+
+	nerr := normalizeFlags(c.Flags, set)
+	if nerr != nil {
+		fmt.Println(nerr)
+		fmt.Println("")
+		ShowCommandHelp(ctx, c.Name)
+		fmt.Println("")
+		return nerr
+	}
+	context := NewContext(ctx.App, set, ctx.globalSet)
+
+	if checkCommandCompletions(context, c.Name) {
+		return nil
+	}
+
+	if checkCommandHelp(context, c.Name) {
+		return nil
+	}
+
+	if err := context.Satisfies(c.Requires); err != nil {
+		return err
+	}
+
+	context.Command = c
+	c.Action(context)
+	return nil
+}
+
+// Returns true if Command.Name or Command.ShortName matches given name
+func (c Command) HasName(name string) bool {
+	return c.Name == name || c.ShortName == name
+}
+
+func (c Command) startApp(ctx *Context) error {
+	app := NewApp()
+
+	// set the name and usage
+	app.Name = fmt.Sprintf("%s %s", ctx.App.Name, c.Name)
+	if c.Description != "" {
+		app.Usage = c.Description
+	} else {
+		app.Usage = c.Usage
+	}
+
+	// set the flags and commands
+	app.Commands = c.Subcommands
+	app.Flags = c.Flags
+	app.HideHelp = c.HideHelp
+
+	// bash completion
+	app.EnableBashCompletion = ctx.App.EnableBashCompletion
+	if c.BashComplete != nil {
+		app.BashComplete = c.BashComplete
+	}
+
+	// set the actions
+	app.Before = c.Before
+	if c.Action != nil {
+		app.Action = c.Action
+	} else {
+		app.Action = helpSubcommand.Action
+	}
+
+	return app.RunAsSubcommand(ctx)
+}