Beispiel #1
0
// downloadPackage downloads package either use version control tools or not.
func downloadPackage(ctx *cli.Context, nod *doc.Node) (*doc.Node, []string) {
	log.Message("Downloading", fmt.Sprintf("package: %s@%s:%s",
		nod.ImportPath, nod.Type, doc.CheckNodeValue(nod.Value)))
	// Mark as donwloaded.
	downloadCache[nod.RootPath] = true

	// Check if only need to use VCS tools.
	var imports []string
	var err error
	gopathDir := path.Join(installGopath, nod.RootPath)
	vcs := getVcsName(gopathDir)
	if ctx.Bool("update") && ctx.Bool("gopath") && len(vcs) > 0 {
		err = updateByVcs(vcs, gopathDir)
		imports = doc.GetAllImports([]string{gopathDir}, nod.RootPath, false)
	} else {
		// If package has revision and exist, then just check dependencies.
		if nod.IsGetDepsOnly {
			return nod, doc.GetAllImports([]string{path.Join(installRepoPath, nod.RootPath) + versionSuffix(nod.Value)},
				nod.RootPath, ctx.Bool("example"))
		}
		nod.Revision = doc.LocalNodes.MustValue(nod.RootPath, "value")
		imports, err = doc.PureDownload(nod, installRepoPath, ctx) //CmdGet.Flags)
	}

	if err != nil {
		log.Error("get", "Fail to download pakage: "+nod.ImportPath)
		log.Error("", "\t"+err.Error())
		failConut++
		os.RemoveAll(installRepoPath + "/" + nod.RootPath)
		return nil, nil
	}
	return nod, imports
}
Beispiel #2
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func init() {
	hd, err := com.HomeDir()
	if err != nil {
		log.Error("", "Fail to get current user")
		log.Fatal("", err.Error())
	}

	HomeDir = strings.Replace(RawHomeDir, "~", hd, -1)

	cfgPath := path.Join(HomeDir, GOPM_CONFIG_FILE)
	if !com.IsExist(cfgPath) {
		os.MkdirAll(path.Dir(cfgPath), os.ModePerm)
		if _, err = os.Create(cfgPath); err != nil {
			log.Error("", "Fail to create gopm config file")
			log.Fatal("", err.Error())
		}
	}
	Cfg, err = goconfig.LoadConfigFile(cfgPath)
	if err != nil {
		log.Error("", "Fail to load gopm config file")
		log.Fatal("", err.Error())
	}

	LoadLocalNodes()
	LoadPkgNameList(path.Join(HomeDir, PKG_NAME_LIST_PATH))
}
Beispiel #3
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// scan a directory and gen a gopm file
func runGen(ctx *cli.Context) {
	setup(ctx)

	if !com.IsExist(".gopmfile") {
		os.Create(".gopmfile")
	}

	gf, err := goconfig.LoadConfigFile(".gopmfile")
	if err != nil {
		log.Error("gen", "Cannot load gopmfile:")
		log.Fatal("", "\t"+err.Error())
	}

	// Get dependencies.
	imports := doc.GetAllImports([]string{workDir},
		parseTarget(gf.MustValue("target", "path")), ctx.Bool("example"))

	for _, p := range imports {
		p = doc.GetProjectPath(p)
		if strings.HasSuffix(workDir, p) {
			continue
		}
		if value := gf.MustValue("deps", p); len(value) == 0 {
			gf.SetValue("deps", p, "")
		}
	}

	err = goconfig.SaveConfigFile(gf, ".gopmfile")
	if err != nil {
		log.Error("gen", "Fail to save gopmfile:")
		log.Fatal("", "\t"+err.Error())
	}

	log.Success("SUCC", "gen", "Generate gopmfile successfully!")
}
Beispiel #4
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// validPath checks if the information of the package is valid.
func validPath(info string) (string, string) {
	infos := strings.Split(info, ":")

	l := len(infos)
	switch {
	case l == 1:
		// for local imports
		if com.IsFile(infos[0]) {
			return doc.LOCAL, infos[0]
		}

		return doc.BRANCH, ""
	case l == 2:
		switch infos[1] {
		case doc.TRUNK, doc.MASTER, doc.DEFAULT:
			infos[1] = ""
		}
		return infos[0], infos[1]
	default:
		log.Error("", "Cannot parse dependency version:")
		log.Error("", "\t"+info)
		log.Help("Try 'gopm help get' to get more information")
		return "", ""
	}
}
Beispiel #5
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func SaveLocalNodes() {
	if err := goconfig.SaveConfigFile(LocalNodes,
		path.Join(HomeDir+LocalNodesFile)); err != nil {
		log.Error("", "Fail to save localnodes.list:")
		log.Error("", "\t"+err.Error())
	}
}
Beispiel #6
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func LoadPkgNameList(filePath string) {
	PackageNameList = make(map[string]string)

	// If file does not exist, simply ignore.
	if !com.IsFile(filePath) {
		return
	}

	data, err := ioutil.ReadFile(filePath)
	if err != nil {
		log.Error("Package name list", "Fail to read file")
		log.Fatal("", err.Error())
	}

	pkgs := strings.Split(string(data), "\n")
	for i, line := range pkgs {
		infos := strings.Split(line, "=")
		if len(infos) != 2 {
			// Last item might be empty line.
			if i == len(pkgs)-1 {
				continue
			}
			log.Error("", "Fail to parse package name: "+line)
			log.Fatal("", "Invalid package name information")
		}
		PackageNameList[strings.TrimSpace(infos[0])] =
			strings.TrimSpace(infos[1])
	}
}
Beispiel #7
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func buildBinary(ctx *cli.Context, args ...string) {
	genNewGoPath(ctx, false)

	log.Trace("Building...")

	cmdArgs := []string{"go", "build"}
	cmdArgs = append(cmdArgs, args...)
	err := execCmd(newGoPath, newCurPath, cmdArgs...)
	if err != nil {
		log.Error("build", "fail to build program:")
		log.Fatal("", "\t"+err.Error())
	}

	if isWindowsXP {
		fName := path.Base(pkgName)
		binName := fName + ".exe"
		os.Remove(binName)
		exePath := filepath.Join(curPath, doc.VENDOR, "src", pkgName, binName)
		if com.IsFile(exePath) {
			err = os.Rename(exePath, filepath.Join(curPath, binName))
			if err != nil {
				log.Error("build", "fail to move binary:")
				log.Fatal("", "\t"+err.Error())
			}
		} else {
			log.Warn("No binary generated")
		}
	}
}
Beispiel #8
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func GetPkgFullPath(short string) string {
	name, ok := PackageNameList[short]
	if !ok {
		log.Error("", "Invalid package name")
		log.Error("", "It's not a invalid import path and no match in the package name list:")
		log.Fatal("", "\t"+short)
	}
	return name
}
Beispiel #9
0
func execCmd(gopath, curPath string, args ...string) error {
	cwd, err := os.Getwd()
	if err != nil {
		log.Error("", "Fail to get work directory:")
		log.Fatal("", "\t"+err.Error())
	}

	log.Log("Changing work directory to %s", curPath)
	err = os.Chdir(curPath)
	if err != nil {
		log.Error("", "Fail to change work directory:")
		log.Fatal("", "\t"+err.Error())
	}
	defer func() {
		log.Log("Changing work directory back to %s", cwd)
		os.Chdir(cwd)
	}()

	err = os.Chdir(curPath)
	if err != nil {
		log.Error("", "Fail to change work directory:")
		log.Fatal("", "\t"+err.Error())
	}

	oldGoPath = os.Getenv("GOPATH")
	log.Log("Setting GOPATH to %s", gopath)

	sep := ":"
	if runtime.GOOS == "windows" {
		sep = ";"
	}
	err = os.Setenv("GOPATH", gopath+sep+oldGoPath)
	if err != nil {
		log.Error("", "Fail to setting GOPATH:")
		log.Fatal("", "\t"+err.Error())
	}
	defer func() {
		log.Log("Setting GOPATH back to %s", oldGoPath)
		os.Setenv("GOPATH", oldGoPath)
	}()

	cmd := exec.Command(args[0], args[1:]...)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr

	log.Log("===== application outputs start =====\n")

	err = cmd.Run()

	log.Log("====== application outputs end ======")
	return err
}
Beispiel #10
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func exePath() string {
	file, err := exec.LookPath(os.Args[0])
	if err != nil {
		log.Error("Update", "Fail to execute exec.LookPath")
		log.Fatal("", err.Error())
	}
	path, err := filepath.Abs(file)
	if err != nil {
		log.Error("Update", "Fail to get absolutely path")
		log.Fatal("", err.Error())
	}
	return path
}
Beispiel #11
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// CheckIsExistWithVCS returns false if directory only has VCS folder,
// or doesn't exist.
func CheckIsExistWithVCS(path string) bool {
	// Check if directory exist.
	if !com.IsExist(path) {
		return false
	}

	// Check if only has VCS folder.
	dirs, err := GetDirsInfo(path)
	if err != nil {
		log.Error("", "Fail to get directory's information")
		log.Fatal("", err.Error())
	}

	if len(dirs) > 1 {
		return true
	} else if len(dirs) == 0 {
		return false
	}

	switch dirs[0].Name() {
	case ".git", ".hg", ".svn":
		return false
	}

	return true
}
Beispiel #12
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func runRun(ctx *cli.Context) {
	setup(ctx)

	// Get GOPATH.
	installGopath = com.GetGOPATHs()[0]
	if com.IsDir(installGopath) {
		isHasGopath = true
		log.Log("Indicated GOPATH: %s", installGopath)
		installGopath += "/src"
	}

	genNewGoPath(ctx, false)

	log.Trace("Running...")

	cmdArgs := []string{"go", "run"}
	cmdArgs = append(cmdArgs, ctx.Args()...)
	err := execCmd(newGoPath, newCurPath, cmdArgs...)
	if err != nil {
		log.Error("run", "Fail to run program:")
		log.Fatal("", "\t"+err.Error())
	}

	log.Success("SUCC", "run", "Command executed successfully!")
}
Beispiel #13
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// GetDirsInfo returns os.FileInfo of all sub-directories in root path.
func GetDirsInfo(rootPath string) []os.FileInfo {
	rootDir, err := os.Open(rootPath)
	if err != nil {
		log.Error("", "Fail to open directory")
		log.Fatal("", err.Error())
	}
	defer rootDir.Close()

	dirs, err := rootDir.Readdir(0)
	if err != nil {
		log.Error("", "Fail to read directory")
		log.Fatal("", err.Error())
	}

	return dirs
}
Beispiel #14
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// GetImports returns package denpendencies.
func GetImports(absPath, importPath string, example bool) []string {
	pkg, err := build.ImportDir(absPath, build.AllowBinary)
	if err != nil {
		if _, ok := err.(*build.NoGoError); !ok {
			log.Error("", "Fail to get imports")
			log.Fatal("", err.Error())
		}
	}

	fis := GetDirsInfo(absPath)
	absPath += "/"

	dirs := make([]string, 0)
	for _, fi := range fis {
		if fi.IsDir() && !strings.Contains(fi.Name(), VENDOR) {
			dirs = append(dirs, absPath+fi.Name())
		}
	}

	imports := make([]string, 0, len(pkg.Imports))
	for _, p := range pkg.Imports {
		if !IsGoRepoPath(p) && !strings.HasPrefix(p, importPath) {
			imports = append(imports, p)
		}
	}
	if len(dirs) > 0 {
		imports = append(imports, GetAllImports(dirs, importPath, example)...)
	}
	return imports
}
Beispiel #15
0
func copyToGopath(srcPath, destPath string) {
	os.RemoveAll(destPath)
	err := com.CopyDir(srcPath, destPath)
	if err != nil {
		log.Error("download", "Fail to copy to GOPATH:")
		log.Fatal("", "\t"+err.Error())
	}
}
Beispiel #16
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func runGen(ctx *cli.Context) {
	setup(ctx)

	if !com.IsExist(".gopmfile") {
		os.Create(".gopmfile")
	}

	gf, err := goconfig.LoadConfigFile(".gopmfile")
	if err != nil {
		log.Error("gen", "Cannot load gopmfile:")
		log.Fatal("", "\t"+err.Error())
	}

	targetPath := parseTarget(gf.MustValue("target", "path"))
	// Get and set dependencies.
	imports := doc.GetAllImports([]string{workDir}, targetPath, ctx.Bool("example"), false)
	for _, p := range imports {
		p = doc.GetProjectPath(p)
		// Skip subpackage(s) of current project.
		if isSubpackage(p, targetPath) {
			continue
		}

		// Check if user specified the version.
		if value := gf.MustValue("deps", p); len(value) == 0 {
			gf.SetValue("deps", p, "")
		}
	}

	// Get and set resources.
	res := make([]string, 0, len(commonRes))
	for _, cr := range commonRes {
		if com.IsExist(cr) {
			res = append(res, cr)
		}
	}
	gf.SetValue("res", "include", strings.Join(res, "|"))

	err = goconfig.SaveConfigFile(gf, ".gopmfile")
	if err != nil {
		log.Error("gen", "Fail to save gopmfile:")
		log.Fatal("", "\t"+err.Error())
	}

	log.Success("SUCC", "gen", "Generate gopmfile successfully!")
}
Beispiel #17
0
// downloadPackage downloads package either use version control tools or not.
func downloadPackage(ctx *cli.Context, nod *doc.Node) (*doc.Node, []string) {
	log.Message("Downloading", fmt.Sprintf("package: %s@%s:%s",
		nod.ImportPath, nod.Type, doc.CheckNodeValue(nod.Value)))
	// Mark as donwloaded.
	downloadCache[nod.RootPath] = true

	nod.Revision = doc.LocalNodes.MustValue(nod.RootPath, "value")
	imports, err := doc.PureDownload(nod, installRepoPath, ctx) //CmdGet.Flags)

	if err != nil {
		log.Error("get", "Fail to download pakage: "+nod.ImportPath)
		log.Error("", "\t"+err.Error())
		failConut++
		os.RemoveAll(installRepoPath + "/" + nod.RootPath)
		return nil, nil
	}
	return nod, imports
}
Beispiel #18
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// NewGopmfile loads gopmgile in given directory.
func NewGopmfile(dirPath string) *goconfig.ConfigFile {
	dirPath, _ = filepath.Abs(dirPath)
	gf, err := goconfig.LoadConfigFile(path.Join(dirPath, GOPM_FILE_NAME))
	if err != nil {
		log.Error("", "Fail to load gopmfile:")
		log.Fatal("", "\t"+err.Error())
	}
	return gf
}
Beispiel #19
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// setup initialize common environment for commands.
func setup(ctx *cli.Context) {
	var err error
	workDir, err = os.Getwd()
	if err != nil {
		log.Error("setup", "Fail to get work directory:")
		log.Fatal("", "\t"+err.Error())
	}

	log.PureMode = ctx.GlobalBool("noterm")
	log.Verbose = ctx.Bool("verbose")
}
Beispiel #20
0
func loadLocalVerInfo() (ver version) {
	verPath := path.Join(doc.HomeDir, doc.VER_PATH)

	// First time run should not exist.
	if !com.IsExist(verPath) {
		return ver
	}

	f, err := os.Open(verPath)
	if err != nil {
		log.Error("Update", "Fail to open VERSION.json")
		log.Fatal("", err.Error())
	}

	if err := json.NewDecoder(f).Decode(&ver); err != nil {
		log.Error("Update", "Fail to decode VERSION.json")
		log.Fatal("", err.Error())
	}
	return ver
}
Beispiel #21
0
func runConfig(ctx *cli.Context) {
	setup(ctx)

	if len(ctx.Args()) == 0 {
		log.Error("config", "Cannot start command:")
		log.Fatal("", "\tNo section specified")
	}

	switch ctx.Args()[0] {
	case "github":
		if len(ctx.Args()) < 3 {
			log.Error("config", "Cannot config section 'github'")
			log.Fatal("", "\tNot enough arguments for client_id and client_secret")
		}
		doc.Cfg.SetValue("github", "client_id", ctx.Args()[1])
		doc.Cfg.SetValue("github", "client_secret", ctx.Args()[2])
		goconfig.SaveConfigFile(doc.Cfg, path.Join(doc.HomeDir, doc.GOPM_CONFIG_FILE))
	}

	log.Success("SUCC", "config", "Command executed successfully!")
}
Beispiel #22
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func init() {
	hd, err := com.HomeDir()
	if err != nil {
		log.Error("", "Fail to get current user")
		log.Fatal("", err.Error())
	}

	HomeDir = strings.Replace(RawHomeDir, "~", hd, -1)

	LoadLocalNodes()
	LoadPkgNameList(HomeDir + "/data/pkgname.list")
}
Beispiel #23
0
func getGopmPkgs(dirPath string, isTest bool) (pkgs map[string]*doc.Pkg, err error) {
	absPath, err := filepath.Abs(dirPath)
	if err != nil {
		log.Error("", "Fail to get absolute path of work directory:")
		log.Fatal("", "\t"+err.Error())
	}

	var builds map[string]string

	if com.IsFile(absPath + "/" + doc.GOPM_FILE_NAME) {
		gf := doc.NewGopmfile(absPath)

		if builds, err = gf.GetSection("deps"); err != nil {
			builds = nil
		}
	}

	imports := doc.GetAllImports([]string{dirPath}, ".", false, false)
	pkgs = make(map[string]*doc.Pkg)
	for _, name := range imports {
		if name == "C" {
			continue
		}
		if !doc.IsGoRepoPath(name) {
			if builds != nil {
				if info, ok := builds[name]; ok {
					// Check version. there should chek
					// local first because d:\ contains :
					if com.IsDir(info) {
						pkgs[name] = &doc.Pkg{
							ImportPath: name,
							Type:       doc.LOCAL,
							Value:      info,
						}
						continue
					} else if i := strings.Index(info, ":"); i > -1 {
						pkgs[name] = &doc.Pkg{
							ImportPath: name,
							Type:       info[:i],
							Value:      info[i+1:],
						}
						continue
					}
				}
			}
			pkgs[name] = doc.NewDefaultPkg(name)
		}
	}
	return pkgs, nil
}
Beispiel #24
0
func runTest(ctx *cli.Context) {
	genNewGoPath(ctx, true)

	log.Trace("Testing...")

	cmdArgs := []string{"go", "test"}
	cmdArgs = append(cmdArgs, ctx.Args()...)
	err := execCmd(newGoPath, newCurPath, cmdArgs...)
	if err != nil {
		log.Error("Test", "Fail to test program")
		log.Fatal("", err.Error())
	}

	log.Success("SUCC", "Test", "Command execute successfully!")
}
Beispiel #25
0
func copyToGopath(srcPath, destPath string) {
	importPath := strings.TrimPrefix(destPath, installGopath+"/")
	if len(getVcsName(destPath)) > 0 {
		log.Warn("Package in GOPATH has version control: %s", importPath)
		return
	}

	os.RemoveAll(destPath)
	err := com.CopyDir(srcPath, destPath)
	if err != nil {
		log.Error("download", "Fail to copy to GOPATH:")
		log.Fatal("", "\t"+err.Error())
	}

	log.Log("Package copied to GOPATH: %s", importPath)
}
Beispiel #26
0
func LoadLocalNodes() {
	if !com.IsDir(HomeDir + "/data") {
		os.MkdirAll(HomeDir+"/data", os.ModePerm)
	}

	if !com.IsFile(HomeDir + LocalNodesFile) {
		os.Create(HomeDir + LocalNodesFile)
	}

	var err error
	LocalNodes, err = goconfig.LoadConfigFile(path.Join(HomeDir + LocalNodesFile))
	if err != nil {
		log.Error("load node", "Fail to load localnodes.list")
		log.Fatal("", err.Error())
	}
}
Beispiel #27
0
func getImports(rootPath string, match map[string]string, cmdFlags map[string]bool, nod *Node) (imports []string) {
	dirs, err := GetDirsInfo(rootPath)
	if err != nil {
		log.Error("", "Fail to get directory's information")
		log.Fatal("", err.Error())
	}

	for _, d := range dirs {
		if d.IsDir() && !(!cmdFlags["-e"] && strings.Contains(d.Name(), "example")) {
			absPath := rootPath + d.Name() + "/"
			importPkgs, err := CheckImports(absPath, match["importPath"], nod)
			if err != nil {
				return nil
			}
			imports = append(imports, importPkgs...)
		}
	}
	return imports
}
Beispiel #28
0
func runGet(ctx *cli.Context) {
	setup(ctx)

	// Check conflicts.
	if ctx.Bool("gopath") && ctx.Bool("remote") {
		log.Error("get", "Command options have conflicts")
		log.Error("", "Following options are not supposed to use at same time:")
		log.Error("", "\t'--gopath, -g' '--remote, -r'")
		log.Help("Try 'gopm help get' to get more information")
	}

	if !ctx.Bool("remote") {
		// Get GOPATH.
		installGopath = com.GetGOPATHs()[0]
		if com.IsDir(installGopath) {
			isHasGopath = true
			log.Log("Indicated GOPATH: %s", installGopath)
			installGopath += "/src"
		} else {
			if ctx.Bool("gopath") {
				log.Error("get", "Invalid GOPATH path")
				log.Error("", "GOPATH does not exist or is not a directory:")
				log.Error("", "\t"+installGopath)
				log.Help("Try 'go help gopath' to get more information")
			} else {
				// It's OK that no GOPATH setting
				// when user does not specify to use.
				log.Warn("No GOPATH setting available")
			}
		}
	}

	// The gopm local repository.
	installRepoPath = doc.HomeDir + "/repos"
	log.Log("Local repository path: %s", installRepoPath)

	// Check number of arguments to decide which function to call.
	switch len(ctx.Args()) {
	case 0:
		getByGopmfile(ctx)
	default:
		getByPath(ctx)
	}
}
Beispiel #29
0
func genNewGoPath(ctx *cli.Context, isTest bool) {
	var err error
	curPath, err = os.Getwd()
	if err != nil {
		log.Error("", "Fail to get work directory:")
		log.Fatal("", "\t"+err.Error())
	}
	log.Trace("Current Path: 0 %s", curPath)

	installRepoPath = doc.HomeDir + "/repos"

	if com.IsFile(curPath + "/" + doc.GOPM_FILE_NAME) {
		log.Trace("Loading gopmfile...")
		gf := doc.NewGopmfile(curPath)

		var err error
		pkgName, err = gf.GetValue("target", "path")
		if err == nil {
			log.Log("Target name: %s", pkgName)
		}
	}

	if len(pkgName) == 0 {
		_, pkgName = filepath.Split(curPath)
	}

	cachePkgs := make(map[string]*doc.Pkg)
	if err = getChildPkgs(ctx, curPath, nil, cachePkgs, isTest); err != nil {
		log.Error("", "Fail to get child pakcages:")
		log.Fatal("", "\t"+err.Error())
	}

	newGoPath = filepath.Join(curPath, doc.VENDOR)
	newGoPathSrc := filepath.Join(newGoPath, "src")
	os.RemoveAll(newGoPathSrc)
	os.MkdirAll(newGoPathSrc, os.ModePerm)

	for name, pkg := range cachePkgs {
		suf := versionSuffix(pkg.Value)

		var oldPath string
		if pkg.Type == doc.LOCAL {
			oldPath, _ = filepath.Abs(pkg.Value)
		} else {
			oldPath = filepath.Join(installRepoPath, name) + suf
		}

		newPath := filepath.Join(newGoPathSrc, name)
		paths := strings.Split(name, "/")
		var isExistP, isCurChild bool
		if name == pkgName {
			continue
		}

		for i := 0; i < len(paths)-1; i++ {
			pName := strings.Join(paths[:len(paths)-1-i], "/")
			if _, ok := cachePkgs[pName]; ok {
				isExistP = true
				break
			}
			if pkgName == pName {
				isCurChild = true
				break
			}
		}
		if isCurChild {
			continue
		}

		if !isExistP && (len(pkg.Value) > 0 || ctx.Bool("remote") ||
			!com.IsDir(filepath.Join(installGopath, pkg.ImportPath))) {
			log.Log("Linking %s", name+suf)
			err = autoLink(oldPath, newPath)
			if err != nil {
				log.Error("", "Fail to make link:")
				log.Fatal("", "\t"+err.Error())
			}
		}
	}

	newCurPath = filepath.Join(newGoPathSrc, pkgName)
	log.Log("Linking %s", pkgName)
	err = autoLink(curPath, newCurPath)
	if err != nil {
		log.Error("", "Fail to make link:")
		log.Fatal("", "\t"+err.Error())
	}
}
Beispiel #30
0
func runInstall(ctx *cli.Context) {
	setup(ctx)

	var target string
	switch len(ctx.Args()) {
	case 0:
		if !com.IsFile(".gopmfile") {
			break
		}

		gf := doc.NewGopmfile(".")
		target = gf.MustValue("target", "path")
	case 1:
		target = ctx.Args()[0]
	default:
		log.Fatal("install", "Too many arguments")
	}

	// Get GOPATH.
	installGopath = com.GetGOPATHs()[0]
	if com.IsDir(installGopath) {
		isHasGopath = true
		log.Log("Indicated GOPATH: %s", installGopath)
		installGopath += "/src"
	} else {
		if ctx.Bool("gopath") {
			log.Error("get", "Invalid GOPATH path")
			log.Error("", "GOPATH does not exist or is not a directory:")
			log.Error("", "\t"+installGopath)
			log.Help("Try 'go help gopath' to get more information")
		} else {
			// It's OK that no GOPATH setting
			// when user does not specify to use.
			log.Warn("No GOPATH setting available")
		}
	}

	genNewGoPath(ctx, false)

	var installRepos []string
	if ctx.Bool("pkg") {
		curPath, _ := filepath.Abs(".")
		installRepos = doc.GetAllImports([]string{curPath},
			".", ctx.Bool("example"))
	} else {
		if len(target) == 0 {
			target = pkgName
		}

		installRepos = []string{target}
	}

	log.Trace("Installing...")

	for _, repo := range installRepos {
		cmdArgs := []string{"go", "install"}

		if ctx.Bool("verbose") {
			cmdArgs = append(cmdArgs, "-v")
		}
		cmdArgs = append(cmdArgs, repo)
		err := execCmd(newGoPath, newCurPath, cmdArgs...)
		if err != nil {
			log.Error("install", "Fail to install program:")
			log.Fatal("", "\t"+err.Error())
		}
	}

	log.Success("SUCC", "install", "Command executed successfully!")
}