Golang util.Fatal函数代码示例

func Read() {
	cacheFile = filepath.Join(os.Getenv("GOPATH"), cacheFileName)

	cache = make(map[string]time.Time)

	if !util.Exists(cacheFile) {
		return
	}

	if clear {
		err := os.Remove(cacheFile)
		if err != nil {
			util.Fatal(err)
		}
		return
	}

	util.Verbose("Reading cache file from " + cacheFile)

	data, err := ioutil.ReadFile(cacheFile)
	if err != nil {
		util.Fatal(err)
	}

	err = json.Unmarshal(data, &cache)
	if err != nil {
		return
	}
}

// Create writes an empty deps.json at the location specified by path
func Create(path string) {
	if util.Exists(path) {
		util.Fatal(colors.Red(dep.DepsFile + " already exists!"))
	}
	util.Print(colors.Blue("Initializing:"))
	err := ioutil.WriteFile(path, []byte(template), 0644)
	if err == nil {
		util.Print("Empty " + dep.DepsFile + " created (" + path + ")")
	} else {
		util.Fatal(colors.Red("Error creating "+dep.DepsFile+": "), err)
	}
	return
}

//Read - get top-level frozen dependencies
func Read(deps dep.DependencyMap) (result string) {
	var err error
	var resultMap = make(map[string]*dep.Dependency)

	util.Print(colors.Yellow("NOTE: This will not reflect the state of the remote unless you have just run `depman install`."))

	for k, v := range deps.Map {
		if v.Type == dep.TypeGitClone && v.Alias == "" {
			util.PrintIndent(colors.Red("Error: Repo '" + k + "' Type '" + v.Type + "' requires 'alias' field (defined in " + deps.Path + ")"))
			continue
		}

		v.Version, err = v.VCS.GetHead(v)
		if err != nil {
			util.Fatal(err)
		}

		resultMap[k] = v
	}

	//not changing the logic in the loop because we might want to change the print format later
	for _, v := range resultMap {
		result += fmt.Sprintf("%s %s\n", v.Repo, v.Version)
	}

	return
}

//GetHead - Render a revspec to a commit ID
func (g *Git) GetHead(d *Dependency) (hash string, err error) {
	var pwd string

	pwd = util.Pwd()
	util.Cd(d.Path())

	c := exec.Command("git", "rev-parse", d.Version)
	{
		var out_bytes []byte
		out_bytes, err = c.CombinedOutput()
		hash = strings.TrimSuffix(string(out_bytes), "\n")
	}

	util.Cd(pwd)

	if err != nil {
		util.Print("pwd: " + util.Pwd())
		util.PrintIndent(colors.Red("git rev-parse " + d.Version))
		util.PrintIndent(colors.Red(string(hash)))
		util.PrintIndent(colors.Red(err.Error()))
		util.Fatal("")
	}

	return
}

// Add interactively prompts the user for details of a dependency, adds it to deps.json, and writes out the file
func Add(deps dep.DependencyMap, name string) {
	var cont = true
	_, exists := deps.Map[name]
	if exists {
		util.Fatal(colors.Red("Dependency '" + name + "'' is already defined, pick another name."))
	}

	util.Print(colors.Blue("Adding: ") + name)

	for cont {
		d := new(dep.Dependency)
		d.Type = promptType("Type", "git, git-clone, hg, bzr")
		if d.Type == dep.TypeGitClone {
			d.Repo = promptString("Repo", "git url")
		} else {
			d.Repo = promptString("Repo", "go import")
		}
		d.Version = promptString("Version", "hash, branch, or tag")
		if d.Type == dep.TypeGitClone {
			d.Alias = promptString("Alias", "where to install the repo")
		}
		deps.Map[name] = d
		cont = promptBool("Add another", "y/N")
	}

	for name, d := range deps.Map {
		err := d.SetupVCS(name)
		if err != nil {
			delete(deps.Map, name)
		}

	}

	err := deps.Write()
	if err != nil {
		util.Fatal(colors.Red("Error Writing " + deps.Path + ": " + err.Error()))
	}

	install.Install(deps)

	return
}

//ReadRecursively - get frozen dependencies recursively
func ReadRecursively(deps dep.DependencyMap, set map[string]string) (result string) {
	var err error

	if set == nil {
		util.Print(colors.Yellow("NOTE: This will not reflect the state of the remote unless you have just run `depman install`."))

		set = make(map[string]string)
	}

	for name, d := range deps.Map {
		var subPath string
		var depsFile string
		var subDeps dep.DependencyMap

		if _, ok := set[d.Repo]; ok {
			continue
		}

		if d.Type == dep.TypeGitClone && d.Alias == "" {
			util.PrintIndent(colors.Red("Error: Repo '" + name + "' Type '" + d.Type + "' requires 'alias' field (defined in " + deps.Path + ")"))
			continue
		}

		{
			var temp string

			temp, err = d.VCS.GetHead(d)
			if err != nil {
				util.Fatal(err)
			}

			set[d.Repo] = temp
			result += fmt.Sprintf("%s %s\n", d.Repo, temp)
		}

		subPath = d.Path()

		// Recursive
		depsFile = util.UpwardFind(subPath, dep.DepsFile)
		if depsFile != "" {
			subDeps, err = dep.Read(depsFile)
			if err == nil {
				result += ReadRecursively(subDeps, set)
			} else {
				util.Print(colors.Yellow("Error reading deps from '" + subDeps.Path + "': " + err.Error()))
			}
		}
	}
	return
}

// Check for duplicate dependency
// if same name and same version, skip
// if same name and different version, exit
// if different name, add to set, don't skip
func duplicate(d dep.Dependency, set map[string]string) (skip bool) {
	version, installed := set[d.Repo]
	if installed && version != d.Version {
		util.Print(colors.Red("ERROR    : Duplicate dependency with different versions detected"))
		util.Print(colors.Red("Repo     : " + d.Repo))
		util.Fatal(colors.Red("Versions : " + d.Version + "\t" + version))
	} else if installed {
		util.VerboseIndent(colors.Yellow("Skipping previously installed dependency: ") + d.Repo)
		skip = true
	} else {
		set[d.Repo] = d.Version
	}
	return
}

// Update rewrites Dependency name in deps.json to use the last commit in branch as version
func Update(deps dep.DependencyMap, name string, branch string) {
	util.Print(colors.Blue("Updating:"))

	d, ok := deps.Map[name]
	if !ok {
		util.Fatal(colors.Red("Dependency Name '" + name + "' not found in deps.json"))
	}

	// record the old version
	oldVersion := d.Version

	// temporarily use the branch
	d.Version = branch

	pwd := util.Pwd()
	util.Cd(d.Path())
	d.VCS.Checkout(d)
	d.VCS.Update(d)

	// get the last commit on the newly checked out branch
	v, err := d.VCS.LastCommit(d, branch)
	if err != nil {
		util.Fatal(err)
	}

	// set the version to be the last commit
	d.Version = v

	util.PrintIndent(colors.Blue(name) + " (" + oldVersion + " --> " + d.Version + ")")

	util.Cd(pwd)
	deps.Map[name] = d
	deps.Write()

	install.Install(deps)

}

// LastCommit retrieves the version number of the last commit on branch
// Assumes that the current working directory is in the bzr repo
func (b *Bzr) LastCommit(d *Dependency, branch string) (hash string, err error) {
	c := exec.Command("bzr", "log", "--line")
	out, err := c.CombinedOutput()

	if err != nil {
		util.Print("pwd: " + util.Pwd())
		util.PrintIndent(colors.Red("bzr log --line"))
		util.PrintIndent(colors.Red(string(out)))
		util.PrintIndent(colors.Red(err.Error()))
		util.Fatal("")
	}

	hash = strings.Split(string(out), ":")[0]
	return
}

// LastCommit retrieves the version number of the last commit on branch
// Assumes that the current working directory is in the hg repo
func (h *Hg) LastCommit(d *Dependency, branch string) (hash string, err error) {
	c := exec.Command("hg", "log", "--template='{node}\n'", "--limit=1")
	out, err := c.CombinedOutput()

	if err != nil {
		util.Print("pwd: " + util.Pwd())
		util.PrintIndent(colors.Red("hg log --template='{node}\n' --limit=1"))
		util.PrintIndent(colors.Red(string(out)))
		util.PrintIndent(colors.Red(err.Error()))
		util.Fatal("")
	}

	hash = strings.Replace(string(out), "\n", "", -1)
	return
}

//GetHead - Render a revspec to a commit ID
func (b *Bzr) GetHead(d *Dependency) (hash string, err error) {
	var pwd string

	pwd = util.Pwd()
	util.Cd(d.Path())
	defer util.Cd(pwd)

	out, err := exec.Command("bzr", "revno", d.Version).CombinedOutput()
	hash = strings.TrimSuffix(string(out), "\n")

	if err != nil {
		util.Print("pwd: " + util.Pwd())
		util.PrintIndent(colors.Red("bzr revno " + d.Version))
		util.PrintIndent(colors.Red(hash))
		util.PrintIndent(colors.Red(err.Error()))
		util.Fatal("")
	}

	return
}

// Print displays a message if a newer version of depman is available
// this should only be called after Check()
func Print() {
	if !checkCalled {
		util.Fatal(colors.Red("You must call upgrade.Check() before upgrade.Print()"))
	}

	// if the command used was self-upgrade, we can just return
	if selfCalled {
		return
	}

	ref := <-channel

	if checkError != nil {
		util.Verbose(colors.Yellow("Upgrade Check Error: " + checkError.Error()))
	}

	if ref != none {
		fmt.Println(colors.Yellow(fmt.Sprintf(message, ref)))
	}
}

// LastCommit retrieves the version number of the last commit on branch
// Assumes that the current working directory is in the git repo
func (g *Git) LastCommit(d *Dependency, branch string) (hash string, err error) {
	if !g.isBranch(branch) {
		err = errors.New("Branch '" + branch + "' is not a valid branch")
		return
	}

	c := exec.Command("git", "log", "-1", "--format=%H")
	out, err := c.CombinedOutput()

	if err != nil {
		util.Print("pwd: " + util.Pwd())
		util.PrintIndent(colors.Red("git log -1 --format=%H"))
		util.PrintIndent(colors.Red(string(out)))
		util.PrintIndent(colors.Red(err.Error()))
		util.Fatal("")
	}

	hash = strings.Replace(string(out), "\n", "", -1)
	return
}

//GetHead - Render a revspec to a commit ID
func (h *Hg) GetHead(d *Dependency) (hash string, err error) {
	var pwd string

	pwd = util.Pwd()
	util.Cd(d.Path())
	defer util.Cd(pwd)

	out, err := exec.Command("hg", "id", "-i").CombinedOutput()
	hash = strings.TrimSuffix(string(out), "\n")

	if err != nil {
		util.Print("pwd: " + util.Pwd())
		util.PrintIndent(colors.Red("hg id -i"))
		util.PrintIndent(colors.Red(hash))
		util.PrintIndent(colors.Red(err.Error()))
		util.Fatal("")
	}

	return
}

// Write writes the cache out to disk
func Write() {
	if skip {
		return
	}

	var buf bytes.Buffer
	str, err := json.Marshal(cache)
	if err == nil {
		json.Indent(&buf, str, "", "    ")
		data := []byte(buf.String() + "\n")

		util.Verbose("Writing cache file to " + cacheFile)

		err = ioutil.WriteFile(cacheFile, data, 0644)
		if err != nil {
			util.Fatal(err)
		}
	}
	return
}