glide.go - third_party/Masterminds/glide - Git at Google

 // Glide is a command line utility that manages Go project dependencies and
 // your GOPATH.
 //
 // Dependencies are managed via a glide.yaml in the root of a project. The yaml
 //
 // Params:
 // 	- filename (string): The name of the glide YAML file. Default is glide.yaml.
 // 	- project (string): The name of the project. Default is 'main'.
 // file lets you specify projects, versions (tags, branches, or references),
 // and even alias one location in as other one. Aliasing is useful when supporting
 // forks without needing to rewrite the imports in a codebase.
 //
 // A glide.yaml file looks like:
 //
 //		package: github.com/Masterminds/glide
 //		imports:
 //			- package: github.com/Masterminds/cookoo
 //			  vcs: git
 //			  ref: 1.1.0
 //			  subpackages: **
 //			- package: github.com/kylelemons/go-gypsy
 //			  subpackages: yaml
 //
 // Glide puts dependencies in a vendor directory. Go utilities require this to
 // be in your GOPATH. Glide makes this easy. Use the `glide in` command to enter
 // a shell (your default) with the GOPATH set to the projects vendor directory.
 // To leave this shell simply exit it.
 //
 // If your .bashrc, .zshrc, or other startup shell sets your GOPATH you many need
 // to optionally set it using something like:
 //
 //		if [ "" = "${GOPATH}" ]; then
 //		  export GOPATH="/some/dir"
 //		fi
 //
 // For more information use the `glide help` command or see https://github.com/Masterminds/glide
 package main

 import (
 	"path/filepath"

 	"github.com/Masterminds/glide/cmd"

 	"github.com/Masterminds/cookoo"
 	"github.com/codegangsta/cli"

 	"fmt"
 	"os"
 	"os/user"
 )

 var version = "dev"

 const usage = `The lightweight vendor package manager for your Go projects.

 Each project should have a 'glide.yaml' file in the project directory. Files
 look something like this:

 	package: github.com/Masterminds/glide
 	imports:
 		- package: github.com/Masterminds/cookoo
 		  vcs: git
 		  ref: 1.1.0
 		  subpackages: **
 		- package: github.com/kylelemons/go-gypsy
 		  subpackages: yaml
 			flatten: true

 NOTE: As of Glide 0.5, the commands 'in', 'into', 'gopath', 'status', and 'env'
 no longer exist.
 `

 // VendorDir default vendor directory name
 var VendorDir = "vendor"

 func main() {
 	reg, router, cxt := cookoo.Cookoo()
 	cxt.Put("VendorDir", VendorDir)

 	routes(reg, cxt)

 	app := cli.NewApp()
 	app.Name = "glide"
 	app.Usage = usage
 	app.Version = version
 	app.Flags = []cli.Flag{
 		cli.StringFlag{
 			Name:  "yaml, y",
 			Value: "glide.yaml",
 			Usage: "Set a YAML configuration file.",
 		},
 		cli.BoolFlag{
 			Name:  "quiet, q",
 			Usage: "Quiet (no info or debug messages)",
 		},
 		cli.BoolFlag{
 			Name:  "debug",
 			Usage: "Print Debug messages (verbose)",
 		},
 		cli.StringFlag{
 			Name:   "home",
 			Value:  defaultGlideDir(),
 			Usage:  "The location of Glide files",
 			EnvVar: "GLIDE_HOME",
 		},
 		cli.BoolFlag{
 			Name:  "no-color",
 			Usage: "Turn off colored output for log messages",
 		},
 	}
 	app.CommandNotFound = func(c *cli.Context, command string) {
 		cxt.Put("os.Args", os.Args)
 		cxt.Put("command", command)
 		setupHandler(c, "@plugin", cxt, router)
 	}

 	app.Commands = commands(cxt, router)

 	app.Run(os.Args)
 }

 func commands(cxt cookoo.Context, router *cookoo.Router) []cli.Command {
 	return []cli.Command{
 		{
 			Name:      "create",
 			ShortName: "init",
 			Usage:     "Initialize a new project, creating a template glide.yaml",
 			Description: `This command starts from a project without Glide and
 	sets it up. Once this step is done, you may edit the glide.yaml file and then
 	you may run 'glide install' to fetch your initial dependencies.

 	By default, the project name is 'main'. You can specify an alternative on
 	the commandline:

 		$ glide create github.com/Masterminds/foo

 	For a project that already has a glide.yaml file, you may skip 'glide create'
 	and instead run 'glide up'.`,
 			Action: func(c *cli.Context) {
 				if len(c.Args()) >= 1 {
 					cxt.Put("project", c.Args()[0])
 				}
 				setupHandler(c, "create", cxt, router)
 			},
 		},
 		{
 			Name:  "get",
 			Usage: "Install one or more package into `vendor/` and add dependency to glide.yaml.",
 			Description: `Gets one or more package (like 'go get') and then adds that file
 	to the glide.yaml file. Multiple package names can be specified on one line.

 		$ glide get github.com/Masterminds/cookoo/web

 	The above will install the project github.com/Masterminds/cookoo and add
 	the subpackage 'web'.

 	If a fetched dependency has a glide.yaml file, 'get' will also install
 	all of the dependencies for that dependency. Those are installed in a scoped
 	vendor directory. So dependency vendor/foo/bar has its dependencies stored
 	in vendor/foo/bar/vendor. This behavior can be disabled using
 	'--no-recursive'

 	If '--import' is set, this will also read the dependency projects, looking
 	for gb, Godep and GPM files. When it finds them, it will build a comparable
 	glide.yaml file, and then fetch all of the necessary dependencies. The
 	dependencies are then vendored in the appropriate project. Subsequent calls
 	to 'glide up' will use the glide.yaml to maintain those dependencies.
 	However, only if you call 'glide up --import' will the glide file be
 	rebuilt. When '--no-recursive' is used, '--import' does nothing.
 	`,
 			Flags: []cli.Flag{
 				cli.BoolFlag{
 					Name:  "no-recursive",
 					Usage: "Disable updating dependencies' dependencies.",
 				},
 				cli.BoolFlag{
 					Name:  "import",
 					Usage: "When fetching dependencies, convert Godeps (GPM, Godep) to glide.yaml and pull dependencies",
 				},
 				cli.BoolFlag{
 					Name:  "insecure",
 					Usage: "Use http:// rather than https:// to retrieve pacakges.",
 				},
 				cli.BoolFlag{
 					Name:  "cache",
 					Usage: "When downloading dependencies attempt to cache them.",
 				},
 				cli.BoolFlag{
 					Name:  "cache-gopath",
 					Usage: "When downloading dependencies attempt to put them in the GOPATH, too.",
 				},
 				cli.BoolFlag{
 					Name:  "skip-gopath",
 					Usage: "Skip attempting to copy a dependency from the GOPATH.",
 				},
 			},
 			Action: func(c *cli.Context) {
 				if len(c.Args()) < 1 {
 					fmt.Println("Oops! Package name is required.")
 					os.Exit(1)
 				}
 				cxt.Put("packages", []string(c.Args()))
 				cxt.Put("skipFlatten", !c.Bool("no-recursive"))
 				cxt.Put("insecure", c.Bool("insecure"))
 				cxt.Put("useCache", c.Bool("cache"))
 				cxt.Put("cacheGopath", c.Bool("cache-gopath"))
 				cxt.Put("skipGopath", c.Bool("skip-gopath"))
 				// FIXME: Are these used anywhere?
 				if c.Bool("import") {
 					cxt.Put("importGodeps", true)
 					cxt.Put("importGPM", true)
 					cxt.Put("importGb", true)
 				}
 				setupHandler(c, "get", cxt, router)
 			},
 		},
 		{
 			Name:  "import",
 			Usage: "Import files from other dependency management systems.",
 			Subcommands: []cli.Command{
 				{
 					Name:  "godep",
 					Usage: "Import Godep's Godeps.json files and display the would-be yaml file",
 					Flags: []cli.Flag{
 						cli.StringFlag{
 							Name:  "file, f",
 							Usage: "Save all of the discovered dependencies to a Glide YAML file.",
 						},
 					},
 					Action: func(c *cli.Context) {
 						cxt.Put("toPath", c.String("file"))
 						setupHandler(c, "import godep", cxt, router)
 					},
 				},
 				{
 					Name:  "gpm",
 					Usage: "Import GPM's Godeps and Godeps-Git files and display the would-be yaml file",
 					Flags: []cli.Flag{
 						cli.StringFlag{
 							Name:  "file, f",
 							Usage: "Save all of the discovered dependencies to a Glide YAML file.",
 						},
 					},
 					Action: func(c *cli.Context) {
 						cxt.Put("toPath", c.String("file"))
 						setupHandler(c, "import gpm", cxt, router)
 					},
 				},
 				{
 					Name:  "gb",
 					Usage: "Import gb's manifest file and display the would-be yaml file",
 					Flags: []cli.Flag{
 						cli.StringFlag{
 							Name:  "file, f",
 							Usage: "Save all of the discovered dependencies to a Glide YAML file.",
 						},
 					},
 					Action: func(c *cli.Context) {
 						cxt.Put("toPath", c.String("file"))
 						setupHandler(c, "import gb", cxt, router)
 					},
 				},
 			},
 		},
 		{
 			Name:        "name",
 			Usage:       "Print the name of this project.",
 			Description: `Read the glide.yaml file and print the name given on the 'package' line.`,
 			Action: func(c *cli.Context) {
 				setupHandler(c, "name", cxt, router)
 			},
 		},
 		{
 			Name:      "novendor",
 			ShortName: "nv",
 			Usage:     "List all non-vendor paths in a directory.",
 			Description: `Given a directory, list all the relevant Go paths that are not vendored.

 Example:

 			$ go test $(glide novendor)
 `,
 			Action: func(c *cli.Context) {
 				setupHandler(c, "nv", cxt, router)
 			},
 		},
 		{
 			Name:  "pin",
 			Usage: "Print a YAML file with all of the packages pinned to the current version",
 			Description: `Begins with the current glide.yaml and sets an absolute ref
     for every package. The version is derived from the repository version. It will be
     either a commit or a tag, depending on the state of the VCS tree.

     By default, output is written to standard out. However, if you supply a filename,
     the data will be written to that:

         $ glide pin glide.yaml

     The above will overwrite your glide.yaml file. You have been warned.
 	`,
 			Action: func(c *cli.Context) {
 				outfile := ""
 				if len(c.Args()) == 1 {
 					outfile = c.Args()[0]
 				}
 				cxt.Put("toPath", outfile)
 				setupHandler(c, "pin", cxt, router)
 			},
 		},
 		{
 			Name:  "rebuild",
 			Usage: "Rebuild ('go build') the dependencies",
 			Description: `This rebuilds the packages' '.a' files. On some systems
 	this can improve performance on subsequent 'go run' and 'go build' calls.`,
 			Action: func(c *cli.Context) {
 				setupHandler(c, "rebuild", cxt, router)
 			},
 		},
 		{
 			Name:      "update",
 			ShortName: "up",
 			Aliases:   []string{"install"},
 			Usage:     "Update or install a project's dependencies",
 			Description: `This uses the native VCS of each package to try to
 	pull the most applicable updates. Packages with fixed refs (Versions or
 	tags) will not be updated. Packages with no ref or with a branch ref will
 	be updated as expected.

 	If a dependency has a glide.yaml file, update will read that file and
 	update those dependencies accordingly. Those dependencies are maintained in
 	a scoped vendor directory. 'vendor/foo/bar' will have its dependencies
 	stored in 'vendor/foo/bar/vendor'. This behavior can be disabled with
 	'--no-recursive'.

 	Glide will also import Godep, GB, and GPM files as it finds them in dependencies.
 	It will create a glide.yaml file from the Godeps data, and then update. This
 	has no effect if '--no-recursive' is set.

 	If the '--update-vendored' flag (aliased to '-u') is present vendored
 	dependencies, stored in your projects VCS repository, will be updated. This
 	works by removing the old package, checking out an the repo and setting the
 	version, and removing the VCS directory.

 	By default, packages that are discovered are considered transient, and are
 	not stored in the glide.yaml file. The --file=NAME.yaml flag allows you
 	to save the discovered dependencies to a YAML file.
 	`,
 			Flags: []cli.Flag{
 				cli.BoolFlag{
 					Name:  "delete",
 					Usage: "Delete vendor packages not specified in config.",
 				},
 				cli.BoolFlag{
 					Name:  "no-recursive, quick",
 					Usage: "Disable updating dependencies' dependencies. Only update things in glide.yaml.",
 				},
 				cli.BoolFlag{
 					Name:  "force",
 					Usage: "If there was a change in the repo or VCS switch to new one. Warning, changes will be lost.",
 				},
 				cli.BoolFlag{
 					Name:  "update-vendored, u",
 					Usage: "Update vendored packages (without local VCS repo). Warning, changes will be lost.",
 				},
 				cli.StringFlag{
 					Name:  "file, f",
 					Usage: "Save all of the discovered dependencies to a Glide YAML file.",
 				},
 				cli.BoolFlag{
 					Name:  "cache",
 					Usage: "When downloading dependencies attempt to cache them.",
 				},
 				cli.BoolFlag{
 					Name:  "cache-gopath",
 					Usage: "When downloading dependencies attempt to put them in the GOPATH, too.",
 				},
 				cli.BoolFlag{
 					Name:  "skip-gopath",
 					Usage: "Skip attempting to copy a dependency from the GOPATH.",
 				},
 			},
 			Action: func(c *cli.Context) {
 				cxt.Put("deleteOptIn", c.Bool("delete"))
 				cxt.Put("forceUpdate", c.Bool("force"))
 				cxt.Put("skipFlatten", c.Bool("no-recursive"))
 				cxt.Put("deleteFlatten", c.Bool("delete-flatten"))
 				cxt.Put("toPath", c.String("file"))
 				cxt.Put("toStdout", false)
 				cxt.Put("useCache", c.Bool("cache"))
 				cxt.Put("cacheGopath", c.Bool("cache-gopath"))
 				cxt.Put("skipGopath", c.Bool("skip-gopath"))
 				if c.Bool("import") {
 					cxt.Put("importGodeps", true)
 					cxt.Put("importGPM", true)
 					cxt.Put("importGb", true)
 				}
 				cxt.Put("updateVendoredDeps", c.Bool("update-vendored"))

 				cxt.Put("packages", []string(c.Args()))
 				setupHandler(c, "update", cxt, router)
 			},
 		},
 		{
 			Name:  "tree",
 			Usage: "Tree prints the dependencies of this project as a tree.",
 			Description: `This scans a project's source files and builds a tree
 	representation of the import graph.

 	It ignores testdata/ and directories that begin with . or _. Packages in
 	vendor/ are only included if they are referenced by the main project or
 	one of its dependencies.`,
 			Action: func(c *cli.Context) {
 				setupHandler(c, "tree", cxt, router)
 			},
 		},
 		{
 			Name:  "list",
 			Usage: "List prints all dependencies that Glide could discover.",
 			Description: `List scans your code and lists all of the packages that are used.

 			It does not use the glide.yaml. Instead, it inspects the code to determine what packages are
 			imported.

 			Directories that begin with . or _ are ignored, as are testdata directories. Packages in
 			vendor are only included if they are used by the project.
 			`,
 			Action: func(c *cli.Context) {
 				setupHandler(c, "list", cxt, router)
 			},
 		},
 		{
 			Name:  "guess",
 			Usage: "Guess dependencies for existing source.",
 			Description: `This looks through existing source and dependencies,
 	and tries to guess all of the dependent packages.

 	By default, 'glide guess' writes to standard output. But if a filename
 	is supplied, the results are written to the file:

 		$ glide guess glide.yaml

 	The above will overwrite the glide.yaml file.`,
 			Action: func(c *cli.Context) {
 				outfile := ""
 				if len(c.Args()) == 1 {
 					outfile = c.Args()[0]
 				}
 				cxt.Put("toPath", outfile)
 				setupHandler(c, "guess", cxt, router)
 			},
 		},
 		{
 			Name:  "about",
 			Usage: "Learn about Glide",
 			Action: func(c *cli.Context) {
 				setupHandler(c, "about", cxt, router)
 			},
 		},
 	}
 }

 func setupHandler(c *cli.Context, route string, cxt cookoo.Context, router *cookoo.Router) {
 	cxt.Put("q", c.GlobalBool("quiet"))
 	cxt.Put("debug", c.GlobalBool("debug"))
 	cxt.Put("no-color", c.GlobalBool("no-color"))
 	cxt.Put("yaml", c.GlobalString("yaml"))
 	cxt.Put("home", c.GlobalString("home"))
 	cxt.Put("cliArgs", c.Args())
 	if err := router.HandleRequest(route, cxt, false); err != nil {
 		fmt.Printf("Oops! %s\n", err)
 		os.Exit(1)
 	}
 }

 func routes(reg *cookoo.Registry, cxt cookoo.Context) {
 	reg.Route("@startup", "Parse args and send to the right subcommand.").
 		// TODO: Add setup for debug in addition to quiet.
 		Does(cmd.BeQuiet, "quiet").
 		Using("quiet").From("cxt:q").
 		Using("debug").From("cxt:debug").
 		Does(cmd.CheckColor, "no-color").
 		Using("no-color").From("cxt:no-color").
 		Does(cmd.VersionGuard, "v")

 	reg.Route("@ready", "Prepare for glide commands.").
 		Does(cmd.ReadyToGlide, "ready").Using("filename").From("cxt:yaml").
 		Does(cmd.ParseYaml, "cfg").Using("filename").From("cxt:yaml").
 		Does(cmd.EnsureCacheDir, "_").Using("home").From("cxt:home")

 	reg.Route("get", "Install a pkg in vendor, and store the results in the glide.yaml").
 		Includes("@startup").
 		Includes("@ready").
 		Does(cmd.GetAll, "goget").
 		Using("filename").From("cxt:yaml").
 		Using("packages").From("cxt:packages").
 		Using("conf").From("cxt:cfg").
 		Using("insecure").From("cxt:insecure").
 		Using("home").From("cxt:home").
 		Using("cache").From("cxt:useCache").
 		Using("cacheGopath").From("cxt:cacheGopath").
 		Using("skipGopath").From("cxt:skipGopath").
 		Does(cmd.Flatten, "flatten").Using("conf").From("cxt:cfg").
 		Using("packages").From("cxt:packages").
 		Using("force").From("cxt:forceUpdate").
 		Using("home").From("cxt:home").
 		Using("cache").From("cxt:useCache").
 		Using("cacheGopath").From("cxt:cacheGopath").
 		Using("skipGopath").From("cxt:skipGopath").
 		Does(cmd.WriteYaml, "out").
 		Using("conf").From("cxt:cfg").
 		Using("filename").WithDefault("glide.yaml").From("cxt:yaml")

 	reg.Route("exec", "Execute command with GOPATH set.").
 		Includes("@startup").
 		Includes("@ready").
 		Does(cmd.ExecCmd, "cmd").
 		Using("args").From("cxt:cliArgs").
 		Using("filename").From("cxt:yaml")

 	reg.Route("update", "Update dependencies.").
 		Includes("@startup").
 		Includes("@ready").
 		Does(cmd.CowardMode, "_").
 		Does(cmd.Mkdir, "dir").Using("dir").WithDefault(VendorDir).
 		Does(cmd.DeleteUnusedPackages, "deleted").
 		Using("conf").From("cxt:cfg").
 		Using("optIn").From("cxt:deleteOptIn").
 		Does(cmd.VendoredSetup, "cfg").
 		Using("conf").From("cxt:cfg").
 		Using("update").From("cxt:updateVendoredDeps").
 		Does(cmd.UpdateImports, "dependencies").
 		Using("conf").From("cxt:cfg").
 		Using("force").From("cxt:forceUpdate").
 		Using("packages").From("cxt:packages").
 		Using("home").From("cxt:home").
 		Using("cache").From("cxt:useCache").
 		Using("cacheGopath").From("cxt:cacheGopath").
 		Using("skipGopath").From("cxt:skipGopath").
 		Does(cmd.SetReference, "version").Using("conf").From("cxt:cfg").
 		Does(cmd.Flatten, "flattened").Using("conf").From("cxt:cfg").
 		Using("packages").From("cxt:packages").
 		Using("force").From("cxt:forceUpdate").
 		Using("skip").From("cxt:skipFlatten").
 		Using("home").From("cxt:home").
 		Using("cache").From("cxt:useCache").
 		Using("cacheGopath").From("cxt:cacheGopath").
 		Using("skipGopath").From("cxt:skipGopath").
 		Does(cmd.VendoredCleanUp, "_").
 		Using("conf").From("cxt:flattened").
 		Using("update").From("cxt:updateVendoredDeps").
 		Does(cmd.WriteYaml, "out").
 		Using("conf").From("cxt:cfg").
 		Using("filename").From("cxt:toPath").
 		Using("toStdout").From("cxt:toStdout")

 	//Does(cmd.Rebuild, "rebuild").Using("conf").From("cxt:cfg")

 	reg.Route("rebuild", "Rebuild dependencies").
 		Includes("@startup").
 		Includes("@ready").
 		Does(cmd.CowardMode, "_").
 		Does(cmd.Rebuild, "rebuild").Using("conf").From("cxt:cfg")

 	reg.Route("pin", "Print a YAML file with all of the packages pinned to the current version.").
 		Includes("@startup").
 		Includes("@ready").
 		Does(cmd.UpdateReferences, "refs").Using("conf").From("cxt:cfg").
 		Does(cmd.WriteYaml, "out").
 		Using("conf").From("cxt:cfg").
 		Using("filename").From("cxt:toPath")

 	reg.Route("import gpm", "Read a Godeps file").
 		Includes("@startup").
 		Includes("@ready").
 		Does(cmd.GPMGodeps, "godeps").
 		Does(cmd.AddDependencies, "addGodeps").
 		Using("dependencies").From("cxt:godeps").
 		Using("conf").From("cxt:cfg").
 		Does(cmd.GPMGodepsGit, "godepsGit").
 		Does(cmd.AddDependencies, "addGodepsGit").
 		Using("dependencies").From("cxt:godepsGit").
 		Using("conf").From("cxt:cfg").
 		// Does(cmd.UpdateReferences, "refs").Using("conf").From("cxt:cfg").
 		Does(cmd.WriteYaml, "out").Using("conf").From("cxt:cfg").
 		Using("filename").From("cxt:toPath")

 	reg.Route("import godep", "Read a Godeps.json file").
 		Includes("@startup").
 		Includes("@ready").
 		Does(cmd.ParseGodepGodeps, "godeps").
 		Does(cmd.AddDependencies, "addGodeps").
 		Using("dependencies").From("cxt:godeps").
 		Using("conf").From("cxt:cfg").
 		// Does(cmd.UpdateReferences, "refs").Using("conf").From("cxt:cfg").
 		Does(cmd.WriteYaml, "out").Using("conf").From("cxt:cfg").
 		Using("filename").From("cxt:toPath")

 	reg.Route("import gb", "Read a vendor/manifest file").
 		Includes("@startup").
 		Includes("@ready").
 		Does(cmd.GbManifest, "manifest").
 		Does(cmd.AddDependencies, "addGodeps").
 		Using("dependencies").From("cxt:manifest").
 		Using("conf").From("cxt:cfg").
 		Does(cmd.WriteYaml, "out").Using("conf").From("cxt:cfg").
 		Using("filename").From("cxt:toPath")

 	reg.Route("guess", "Guess dependencies").
 		Includes("@ready").
 		Does(cmd.GuessDeps, "cfg").
 		Does(cmd.WriteYaml, "out").
 		Using("conf").From("cxt:cfg").
 		Using("filename").From("cxt:toPath")

 	reg.Route("create", "Initialize Glide").
 		Includes("@startup").
 		Does(cmd.InitGlide, "init").
 		Using("filename").From("cxt:yaml").
 		Using("project").From("cxt:project").WithDefault("main")

 	reg.Route("name", "Print environment").
 		Includes("@startup").
 		Includes("@ready").
 		Does(cmd.PrintName, "status").
 		Using("conf").From("cxt:cfg")

 	reg.Route("tree", "Print a dependency graph.").
 		Includes("@startup").
 		Does(cmd.Tree, "tree")
 	reg.Route("list", "Print a dependency graph.").
 		Includes("@startup").
 		Does(cmd.ListDeps, "list")

 	reg.Route("nv", "No Vendor").
 		Includes("@startup").
 		Does(cmd.NoVendor, "paths").
 		Does(cmd.PathString, "out").Using("paths").From("cxt:paths")

 	reg.Route("about", "Status").
 		Includes("@startup").
 		Does(cmd.About, "about")

 	reg.Route("@plugin", "Try to send to a plugin.").
 		Includes("@ready").
 		Does(cmd.DropToShell, "plugin").
 		Using("command").From("cxt:command")
 }

 func defaultGlideDir() string {
 	c, err := user.Current()
 	if err != nil {
 		return ""
 	}
 	return filepath.Join(c.HomeDir, ".glide")
 }
	// Glide is a command line utility that manages Go project dependencies and
	// your GOPATH.
	//
	// Dependencies are managed via a glide.yaml in the root of a project. The yaml
	//
	// Params:
	// - filename (string): The name of the glide YAML file. Default is glide.yaml.
	// - project (string): The name of the project. Default is 'main'.
	// file lets you specify projects, versions (tags, branches, or references),
	// and even alias one location in as other one. Aliasing is useful when supporting
	// forks without needing to rewrite the imports in a codebase.
	//
	// A glide.yaml file looks like:
	//
	// package: github.com/Masterminds/glide
	// imports:
	// - package: github.com/Masterminds/cookoo
	// vcs: git
	// ref: 1.1.0
	// subpackages: **
	// - package: github.com/kylelemons/go-gypsy
	// subpackages: yaml
	//
	// Glide puts dependencies in a vendor directory. Go utilities require this to
	// be in your GOPATH. Glide makes this easy. Use the `glide in` command to enter
	// a shell (your default) with the GOPATH set to the projects vendor directory.
	// To leave this shell simply exit it.
	//
	// If your .bashrc, .zshrc, or other startup shell sets your GOPATH you many need
	// to optionally set it using something like:
	//
	// if [ "" = "${GOPATH}" ]; then
	// export GOPATH="/some/dir"
	// fi
	//
	// For more information use the `glide help` command or see https://github.com/Masterminds/glide
	package main

	import (
	"path/filepath"

	"github.com/Masterminds/glide/cmd"

	"github.com/Masterminds/cookoo"
	"github.com/codegangsta/cli"

	"fmt"
	"os"
	"os/user"
	)

	var version = "dev"

	const usage = `The lightweight vendor package manager for your Go projects.

	Each project should have a 'glide.yaml' file in the project directory. Files
	look something like this:

	package: github.com/Masterminds/glide
	imports:
	- package: github.com/Masterminds/cookoo
	vcs: git
	ref: 1.1.0
	subpackages: **
	- package: github.com/kylelemons/go-gypsy
	subpackages: yaml
	flatten: true

	NOTE: As of Glide 0.5, the commands 'in', 'into', 'gopath', 'status', and 'env'
	no longer exist.
	`

	// VendorDir default vendor directory name
	var VendorDir = "vendor"

	func main() {
	reg, router, cxt := cookoo.Cookoo()
	cxt.Put("VendorDir", VendorDir)

	routes(reg, cxt)

	app := cli.NewApp()
	app.Name = "glide"
	app.Usage = usage
	app.Version = version
	app.Flags = []cli.Flag{
	cli.StringFlag{
	Name: "yaml, y",
	Value: "glide.yaml",
	Usage: "Set a YAML configuration file.",
	},
	cli.BoolFlag{
	Name: "quiet, q",
	Usage: "Quiet (no info or debug messages)",
	},
	cli.BoolFlag{
	Name: "debug",
	Usage: "Print Debug messages (verbose)",
	},
	cli.StringFlag{
	Name: "home",
	Value: defaultGlideDir(),
	Usage: "The location of Glide files",
	EnvVar: "GLIDE_HOME",
	},
	cli.BoolFlag{
	Name: "no-color",
	Usage: "Turn off colored output for log messages",
	},
	}
	app.CommandNotFound = func(c *cli.Context, command string) {
	cxt.Put("os.Args", os.Args)
	cxt.Put("command", command)
	setupHandler(c, "@plugin", cxt, router)
	}

	app.Commands = commands(cxt, router)

	app.Run(os.Args)
	}

	func commands(cxt cookoo.Context, router *cookoo.Router) []cli.Command {
	return []cli.Command{
	{
	Name: "create",
	ShortName: "init",
	Usage: "Initialize a new project, creating a template glide.yaml",
	Description: `This command starts from a project without Glide and
	sets it up. Once this step is done, you may edit the glide.yaml file and then
	you may run 'glide install' to fetch your initial dependencies.

	By default, the project name is 'main'. You can specify an alternative on
	the commandline:

	$ glide create github.com/Masterminds/foo

	For a project that already has a glide.yaml file, you may skip 'glide create'
	and instead run 'glide up'.`,
	Action: func(c *cli.Context) {
	if len(c.Args()) >= 1 {
	cxt.Put("project", c.Args()[0])
	}
	setupHandler(c, "create", cxt, router)
	},
	},
	{
	Name: "get",
	Usage: "Install one or more package into `vendor/` and add dependency to glide.yaml.",
	Description: `Gets one or more package (like 'go get') and then adds that file
	to the glide.yaml file. Multiple package names can be specified on one line.

	$ glide get github.com/Masterminds/cookoo/web

	The above will install the project github.com/Masterminds/cookoo and add
	the subpackage 'web'.

	If a fetched dependency has a glide.yaml file, 'get' will also install
	all of the dependencies for that dependency. Those are installed in a scoped
	vendor directory. So dependency vendor/foo/bar has its dependencies stored
	in vendor/foo/bar/vendor. This behavior can be disabled using
	'--no-recursive'

	If '--import' is set, this will also read the dependency projects, looking
	for gb, Godep and GPM files. When it finds them, it will build a comparable
	glide.yaml file, and then fetch all of the necessary dependencies. The
	dependencies are then vendored in the appropriate project. Subsequent calls
	to 'glide up' will use the glide.yaml to maintain those dependencies.
	However, only if you call 'glide up --import' will the glide file be
	rebuilt. When '--no-recursive' is used, '--import' does nothing.
	`,
	Flags: []cli.Flag{
	cli.BoolFlag{
	Name: "no-recursive",
	Usage: "Disable updating dependencies' dependencies.",
	},
	cli.BoolFlag{
	Name: "import",
	Usage: "When fetching dependencies, convert Godeps (GPM, Godep) to glide.yaml and pull dependencies",
	},
	cli.BoolFlag{
	Name: "insecure",
	Usage: "Use http:// rather than https:// to retrieve pacakges.",
	},
	cli.BoolFlag{
	Name: "cache",
	Usage: "When downloading dependencies attempt to cache them.",
	},
	cli.BoolFlag{
	Name: "cache-gopath",
	Usage: "When downloading dependencies attempt to put them in the GOPATH, too.",
	},
	cli.BoolFlag{
	Name: "skip-gopath",
	Usage: "Skip attempting to copy a dependency from the GOPATH.",
	},
	},
	Action: func(c *cli.Context) {
	if len(c.Args()) < 1 {
	fmt.Println("Oops! Package name is required.")
	os.Exit(1)
	}
	cxt.Put("packages", []string(c.Args()))
	cxt.Put("skipFlatten", !c.Bool("no-recursive"))
	cxt.Put("insecure", c.Bool("insecure"))
	cxt.Put("useCache", c.Bool("cache"))
	cxt.Put("cacheGopath", c.Bool("cache-gopath"))
	cxt.Put("skipGopath", c.Bool("skip-gopath"))
	// FIXME: Are these used anywhere?
	if c.Bool("import") {
	cxt.Put("importGodeps", true)
	cxt.Put("importGPM", true)
	cxt.Put("importGb", true)
	}
	setupHandler(c, "get", cxt, router)
	},
	},
	{
	Name: "import",
	Usage: "Import files from other dependency management systems.",
	Subcommands: []cli.Command{
	{
	Name: "godep",
	Usage: "Import Godep's Godeps.json files and display the would-be yaml file",
	Flags: []cli.Flag{
	cli.StringFlag{
	Name: "file, f",
	Usage: "Save all of the discovered dependencies to a Glide YAML file.",
	},
	},
	Action: func(c *cli.Context) {
	cxt.Put("toPath", c.String("file"))
	setupHandler(c, "import godep", cxt, router)
	},
	},
	{
	Name: "gpm",
	Usage: "Import GPM's Godeps and Godeps-Git files and display the would-be yaml file",
	Flags: []cli.Flag{
	cli.StringFlag{
	Name: "file, f",
	Usage: "Save all of the discovered dependencies to a Glide YAML file.",
	},
	},
	Action: func(c *cli.Context) {
	cxt.Put("toPath", c.String("file"))
	setupHandler(c, "import gpm", cxt, router)
	},
	},
	{
	Name: "gb",
	Usage: "Import gb's manifest file and display the would-be yaml file",
	Flags: []cli.Flag{
	cli.StringFlag{
	Name: "file, f",
	Usage: "Save all of the discovered dependencies to a Glide YAML file.",
	},
	},
	Action: func(c *cli.Context) {
	cxt.Put("toPath", c.String("file"))
	setupHandler(c, "import gb", cxt, router)
	},
	},
	},
	},
	{
	Name: "name",
	Usage: "Print the name of this project.",
	Description: `Read the glide.yaml file and print the name given on the 'package' line.`,
	Action: func(c *cli.Context) {
	setupHandler(c, "name", cxt, router)
	},
	},
	{
	Name: "novendor",
	ShortName: "nv",
	Usage: "List all non-vendor paths in a directory.",
	Description: `Given a directory, list all the relevant Go paths that are not vendored.

	Example:

	$ go test $(glide novendor)
	`,
	Action: func(c *cli.Context) {
	setupHandler(c, "nv", cxt, router)
	},
	},
	{
	Name: "pin",
	Usage: "Print a YAML file with all of the packages pinned to the current version",
	Description: `Begins with the current glide.yaml and sets an absolute ref
	for every package. The version is derived from the repository version. It will be
	either a commit or a tag, depending on the state of the VCS tree.

	By default, output is written to standard out. However, if you supply a filename,
	the data will be written to that:

	$ glide pin glide.yaml

	The above will overwrite your glide.yaml file. You have been warned.
	`,
	Action: func(c *cli.Context) {
	outfile := ""
	if len(c.Args()) == 1 {
	outfile = c.Args()[0]
	}
	cxt.Put("toPath", outfile)
	setupHandler(c, "pin", cxt, router)
	},
	},
	{
	Name: "rebuild",
	Usage: "Rebuild ('go build') the dependencies",
	Description: `This rebuilds the packages' '.a' files. On some systems
	this can improve performance on subsequent 'go run' and 'go build' calls.`,
	Action: func(c *cli.Context) {
	setupHandler(c, "rebuild", cxt, router)
	},
	},
	{
	Name: "update",
	ShortName: "up",
	Aliases: []string{"install"},
	Usage: "Update or install a project's dependencies",
	Description: `This uses the native VCS of each package to try to
	pull the most applicable updates. Packages with fixed refs (Versions or
	tags) will not be updated. Packages with no ref or with a branch ref will
	be updated as expected.

	If a dependency has a glide.yaml file, update will read that file and
	update those dependencies accordingly. Those dependencies are maintained in
	a scoped vendor directory. 'vendor/foo/bar' will have its dependencies
	stored in 'vendor/foo/bar/vendor'. This behavior can be disabled with
	'--no-recursive'.

	Glide will also import Godep, GB, and GPM files as it finds them in dependencies.
	It will create a glide.yaml file from the Godeps data, and then update. This
	has no effect if '--no-recursive' is set.

	If the '--update-vendored' flag (aliased to '-u') is present vendored
	dependencies, stored in your projects VCS repository, will be updated. This
	works by removing the old package, checking out an the repo and setting the
	version, and removing the VCS directory.

	By default, packages that are discovered are considered transient, and are
	not stored in the glide.yaml file. The --file=NAME.yaml flag allows you
	to save the discovered dependencies to a YAML file.
	`,
	Flags: []cli.Flag{
	cli.BoolFlag{
	Name: "delete",
	Usage: "Delete vendor packages not specified in config.",
	},
	cli.BoolFlag{
	Name: "no-recursive, quick",
	Usage: "Disable updating dependencies' dependencies. Only update things in glide.yaml.",
	},
	cli.BoolFlag{
	Name: "force",
	Usage: "If there was a change in the repo or VCS switch to new one. Warning, changes will be lost.",
	},
	cli.BoolFlag{
	Name: "update-vendored, u",
	Usage: "Update vendored packages (without local VCS repo). Warning, changes will be lost.",
	},
	cli.StringFlag{
	Name: "file, f",
	Usage: "Save all of the discovered dependencies to a Glide YAML file.",
	},
	cli.BoolFlag{
	Name: "cache",
	Usage: "When downloading dependencies attempt to cache them.",
	},
	cli.BoolFlag{
	Name: "cache-gopath",
	Usage: "When downloading dependencies attempt to put them in the GOPATH, too.",
	},
	cli.BoolFlag{
	Name: "skip-gopath",
	Usage: "Skip attempting to copy a dependency from the GOPATH.",
	},
	},
	Action: func(c *cli.Context) {
	cxt.Put("deleteOptIn", c.Bool("delete"))
	cxt.Put("forceUpdate", c.Bool("force"))
	cxt.Put("skipFlatten", c.Bool("no-recursive"))
	cxt.Put("deleteFlatten", c.Bool("delete-flatten"))
	cxt.Put("toPath", c.String("file"))
	cxt.Put("toStdout", false)
	cxt.Put("useCache", c.Bool("cache"))
	cxt.Put("cacheGopath", c.Bool("cache-gopath"))
	cxt.Put("skipGopath", c.Bool("skip-gopath"))
	if c.Bool("import") {
	cxt.Put("importGodeps", true)
	cxt.Put("importGPM", true)
	cxt.Put("importGb", true)
	}
	cxt.Put("updateVendoredDeps", c.Bool("update-vendored"))

	cxt.Put("packages", []string(c.Args()))
	setupHandler(c, "update", cxt, router)
	},
	},
	{
	Name: "tree",
	Usage: "Tree prints the dependencies of this project as a tree.",
	Description: `This scans a project's source files and builds a tree
	representation of the import graph.

	It ignores testdata/ and directories that begin with . or _. Packages in
	vendor/ are only included if they are referenced by the main project or
	one of its dependencies.`,
	Action: func(c *cli.Context) {
	setupHandler(c, "tree", cxt, router)
	},
	},
	{
	Name: "list",
	Usage: "List prints all dependencies that Glide could discover.",
	Description: `List scans your code and lists all of the packages that are used.

	It does not use the glide.yaml. Instead, it inspects the code to determine what packages are
	imported.

	Directories that begin with . or _ are ignored, as are testdata directories. Packages in
	vendor are only included if they are used by the project.
	`,
	Action: func(c *cli.Context) {
	setupHandler(c, "list", cxt, router)
	},
	},
	{
	Name: "guess",
	Usage: "Guess dependencies for existing source.",
	Description: `This looks through existing source and dependencies,
	and tries to guess all of the dependent packages.

	By default, 'glide guess' writes to standard output. But if a filename
	is supplied, the results are written to the file:

	$ glide guess glide.yaml

	The above will overwrite the glide.yaml file.`,
	Action: func(c *cli.Context) {
	outfile := ""
	if len(c.Args()) == 1 {
	outfile = c.Args()[0]
	}
	cxt.Put("toPath", outfile)
	setupHandler(c, "guess", cxt, router)
	},
	},
	{
	Name: "about",
	Usage: "Learn about Glide",
	Action: func(c *cli.Context) {
	setupHandler(c, "about", cxt, router)
	},
	},
	}
	}

	func setupHandler(c cli.Context, route string, cxt cookoo.Context, router cookoo.Router) {
	cxt.Put("q", c.GlobalBool("quiet"))
	cxt.Put("debug", c.GlobalBool("debug"))
	cxt.Put("no-color", c.GlobalBool("no-color"))
	cxt.Put("yaml", c.GlobalString("yaml"))
	cxt.Put("home", c.GlobalString("home"))
	cxt.Put("cliArgs", c.Args())
	if err := router.HandleRequest(route, cxt, false); err != nil {
	fmt.Printf("Oops! %s\n", err)
	os.Exit(1)
	}
	}

	func routes(reg *cookoo.Registry, cxt cookoo.Context) {
	reg.Route("@startup", "Parse args and send to the right subcommand.").
	// TODO: Add setup for debug in addition to quiet.
	Does(cmd.BeQuiet, "quiet").
	Using("quiet").From("cxt:q").
	Using("debug").From("cxt:debug").
	Does(cmd.CheckColor, "no-color").
	Using("no-color").From("cxt:no-color").
	Does(cmd.VersionGuard, "v")

	reg.Route("@ready", "Prepare for glide commands.").
	Does(cmd.ReadyToGlide, "ready").Using("filename").From("cxt:yaml").
	Does(cmd.ParseYaml, "cfg").Using("filename").From("cxt:yaml").
	Does(cmd.EnsureCacheDir, "_").Using("home").From("cxt:home")

	reg.Route("get", "Install a pkg in vendor, and store the results in the glide.yaml").
	Includes("@startup").
	Includes("@ready").
	Does(cmd.GetAll, "goget").
	Using("filename").From("cxt:yaml").
	Using("packages").From("cxt:packages").
	Using("conf").From("cxt:cfg").
	Using("insecure").From("cxt:insecure").
	Using("home").From("cxt:home").
	Using("cache").From("cxt:useCache").
	Using("cacheGopath").From("cxt:cacheGopath").
	Using("skipGopath").From("cxt:skipGopath").
	Does(cmd.Flatten, "flatten").Using("conf").From("cxt:cfg").
	Using("packages").From("cxt:packages").
	Using("force").From("cxt:forceUpdate").
	Using("home").From("cxt:home").
	Using("cache").From("cxt:useCache").
	Using("cacheGopath").From("cxt:cacheGopath").
	Using("skipGopath").From("cxt:skipGopath").
	Does(cmd.WriteYaml, "out").
	Using("conf").From("cxt:cfg").
	Using("filename").WithDefault("glide.yaml").From("cxt:yaml")

	reg.Route("exec", "Execute command with GOPATH set.").
	Includes("@startup").
	Includes("@ready").
	Does(cmd.ExecCmd, "cmd").
	Using("args").From("cxt:cliArgs").
	Using("filename").From("cxt:yaml")

	reg.Route("update", "Update dependencies.").
	Includes("@startup").
	Includes("@ready").
	Does(cmd.CowardMode, "_").
	Does(cmd.Mkdir, "dir").Using("dir").WithDefault(VendorDir).
	Does(cmd.DeleteUnusedPackages, "deleted").
	Using("conf").From("cxt:cfg").
	Using("optIn").From("cxt:deleteOptIn").
	Does(cmd.VendoredSetup, "cfg").
	Using("conf").From("cxt:cfg").
	Using("update").From("cxt:updateVendoredDeps").
	Does(cmd.UpdateImports, "dependencies").
	Using("conf").From("cxt:cfg").
	Using("force").From("cxt:forceUpdate").
	Using("packages").From("cxt:packages").
	Using("home").From("cxt:home").
	Using("cache").From("cxt:useCache").
	Using("cacheGopath").From("cxt:cacheGopath").
	Using("skipGopath").From("cxt:skipGopath").
	Does(cmd.SetReference, "version").Using("conf").From("cxt:cfg").
	Does(cmd.Flatten, "flattened").Using("conf").From("cxt:cfg").
	Using("packages").From("cxt:packages").
	Using("force").From("cxt:forceUpdate").
	Using("skip").From("cxt:skipFlatten").
	Using("home").From("cxt:home").
	Using("cache").From("cxt:useCache").
	Using("cacheGopath").From("cxt:cacheGopath").
	Using("skipGopath").From("cxt:skipGopath").
	Does(cmd.VendoredCleanUp, "_").
	Using("conf").From("cxt:flattened").
	Using("update").From("cxt:updateVendoredDeps").
	Does(cmd.WriteYaml, "out").
	Using("conf").From("cxt:cfg").
	Using("filename").From("cxt:toPath").
	Using("toStdout").From("cxt:toStdout")

	//Does(cmd.Rebuild, "rebuild").Using("conf").From("cxt:cfg")

	reg.Route("rebuild", "Rebuild dependencies").
	Includes("@startup").
	Includes("@ready").
	Does(cmd.CowardMode, "_").
	Does(cmd.Rebuild, "rebuild").Using("conf").From("cxt:cfg")

	reg.Route("pin", "Print a YAML file with all of the packages pinned to the current version.").
	Includes("@startup").
	Includes("@ready").
	Does(cmd.UpdateReferences, "refs").Using("conf").From("cxt:cfg").
	Does(cmd.WriteYaml, "out").
	Using("conf").From("cxt:cfg").
	Using("filename").From("cxt:toPath")

	reg.Route("import gpm", "Read a Godeps file").
	Includes("@startup").
	Includes("@ready").
	Does(cmd.GPMGodeps, "godeps").
	Does(cmd.AddDependencies, "addGodeps").
	Using("dependencies").From("cxt:godeps").
	Using("conf").From("cxt:cfg").
	Does(cmd.GPMGodepsGit, "godepsGit").
	Does(cmd.AddDependencies, "addGodepsGit").
	Using("dependencies").From("cxt:godepsGit").
	Using("conf").From("cxt:cfg").
	// Does(cmd.UpdateReferences, "refs").Using("conf").From("cxt:cfg").
	Does(cmd.WriteYaml, "out").Using("conf").From("cxt:cfg").
	Using("filename").From("cxt:toPath")

	reg.Route("import godep", "Read a Godeps.json file").
	Includes("@startup").
	Includes("@ready").
	Does(cmd.ParseGodepGodeps, "godeps").
	Does(cmd.AddDependencies, "addGodeps").
	Using("dependencies").From("cxt:godeps").
	Using("conf").From("cxt:cfg").
	// Does(cmd.UpdateReferences, "refs").Using("conf").From("cxt:cfg").
	Does(cmd.WriteYaml, "out").Using("conf").From("cxt:cfg").
	Using("filename").From("cxt:toPath")

	reg.Route("import gb", "Read a vendor/manifest file").
	Includes("@startup").
	Includes("@ready").
	Does(cmd.GbManifest, "manifest").
	Does(cmd.AddDependencies, "addGodeps").
	Using("dependencies").From("cxt:manifest").
	Using("conf").From("cxt:cfg").
	Does(cmd.WriteYaml, "out").Using("conf").From("cxt:cfg").
	Using("filename").From("cxt:toPath")

	reg.Route("guess", "Guess dependencies").
	Includes("@ready").
	Does(cmd.GuessDeps, "cfg").
	Does(cmd.WriteYaml, "out").
	Using("conf").From("cxt:cfg").
	Using("filename").From("cxt:toPath")

	reg.Route("create", "Initialize Glide").
	Includes("@startup").
	Does(cmd.InitGlide, "init").
	Using("filename").From("cxt:yaml").
	Using("project").From("cxt:project").WithDefault("main")

	reg.Route("name", "Print environment").
	Includes("@startup").
	Includes("@ready").
	Does(cmd.PrintName, "status").
	Using("conf").From("cxt:cfg")

	reg.Route("tree", "Print a dependency graph.").
	Includes("@startup").
	Does(cmd.Tree, "tree")
	reg.Route("list", "Print a dependency graph.").
	Includes("@startup").
	Does(cmd.ListDeps, "list")

	reg.Route("nv", "No Vendor").
	Includes("@startup").
	Does(cmd.NoVendor, "paths").
	Does(cmd.PathString, "out").Using("paths").From("cxt:paths")

	reg.Route("about", "Status").
	Includes("@startup").
	Does(cmd.About, "about")

	reg.Route("@plugin", "Try to send to a plugin.").
	Includes("@ready").
	Does(cmd.DropToShell, "plugin").
	Using("command").From("cxt:command")
	}

	func defaultGlideDir() string {
	c, err := user.Current()
	if err != nil {
	return ""
	}
	return filepath.Join(c.HomeDir, ".glide")
	}