separate logger package from utils

commands.go

@@ -11,7 +11,7 @@ import (
 	"strings"
 	"syscall"
 
-	"github.com/motemen/ghq/utils"
+	"github.com/motemen/ghq/logger"
 	"github.com/urfave/cli"
 )
 
@@ -156,31 +156,37 @@ func doGet(c *cli.Context) error {
 
 			if repoPath != "" {
 				// Guess it
-				utils.Log("resolved", fmt.Sprintf("relative %q to %q", argURL, "https://"+repoPath))
+				logger.Log("resolved", fmt.Sprintf("relative %q to %q", argURL, "https://"+repoPath))
 				argURL = "https://" + repoPath
 			}
 		}
 	}
 
 	url, err := NewURL(argURL)
-	utils.DieIf(err)
+	if err != nil {
+		return err
+	}
 
 	isSSH := c.Bool("p")
 	if isSSH {
 		// Assume Git repository if `-p` is given.
-		url, err = ConvertGitURLHTTPToSSH(url)
-		utils.DieIf(err)
+		if url, err = ConvertGitURLHTTPToSSH(url); err != nil {
+			return err
+		}
 	}
 
 	remote, err := NewRemoteRepository(url)
-	utils.DieIf(err)
+	if err != nil {
+		return err
+	}
 
 	if remote.IsValid() == false {
-		utils.Log("error", fmt.Sprintf("Not a valid repository: %s", url))
-		os.Exit(1)
+		return fmt.Errorf("Not a valid repository: %s", url)
 	}
 
-	getRemoteRepository(remote, doUpdate, isShallow, vcsBackend)
+	if err := getRemoteRepository(remote, doUpdate, isShallow, vcsBackend); err != nil {
+		return err
+	}
 	if andLook {
 		doLook(c)
 	}
@@ -190,7 +196,7 @@ func doGet(c *cli.Context) error {
 // getRemoteRepository clones or updates a remote repository remote.
 // If doUpdate is true, updates the locally cloned repository. Otherwise does nothing.
 // If isShallow is true, does shallow cloning. (no effect if already cloned or the VCS is Mercurial and git-svn)
-func getRemoteRepository(remote RemoteRepository, doUpdate bool, isShallow bool, vcsBackend string) {
+func getRemoteRepository(remote RemoteRepository, doUpdate bool, isShallow bool, vcsBackend string) error {
 	remoteURL := remote.URL()
 	local := LocalRepositoryFromURL(remoteURL)
 
@@ -203,35 +209,36 @@ func getRemoteRepository(remote RemoteRepository, doUpdate bool, isShallow bool,
 			newPath = true
 			err = nil
 		}
-		utils.PanicIf(err)
+		if err != nil {
+			return err
+		}
 	}
 
 	if newPath {
-		utils.Log("clone", fmt.Sprintf("%s -> %s", remoteURL, path))
+		logger.Log("clone", fmt.Sprintf("%s -> %s", remoteURL, path))
 
 		vcs := vcsRegistry[vcsBackend]
 		repoURL := remoteURL
 		if vcs == nil {
 			vcs, repoURL = remote.VCS()
 			if vcs == nil {
-				utils.Log("error", fmt.Sprintf("Could not find version control system: %s", remoteURL))
-				os.Exit(1)
+				return fmt.Errorf("Could not find version control system: %s", remoteURL)
 			}
 		}
 
 		err := vcs.Clone(repoURL, path, isShallow)
 		if err != nil {
-			utils.Log("error", err.Error())
-			os.Exit(1)
+			return err
 		}
 	} else {
 		if doUpdate {
-			utils.Log("update", path)
+			logger.Log("update", path)
 			local.VCS().Update(path)
 		} else {
-			utils.Log("exists", path)
+			logger.Log("exists", path)
 		}
 	}
+	return nil
 }
 
 func doList(c *cli.Context) error {
@@ -335,39 +342,33 @@ func doLook(c *cli.Context) error {
 
 	switch len(reposFound) {
 	case 0:
-		utils.Log("error", "No repository found")
-		os.Exit(1)
-
+		return fmt.Errorf("No repository found")
 	case 1:
 		if runtime.GOOS == "windows" {
 			cmd := exec.Command(os.Getenv("COMSPEC"))
 			cmd.Stdin = os.Stdin
 			cmd.Stdout = os.Stdout
 			cmd.Stderr = os.Stderr
 			cmd.Dir = reposFound[0].FullPath
-			err := cmd.Start()
-			if err == nil {
-				cmd.Wait()
-				os.Exit(0)
-			}
-		} else {
-			shell := os.Getenv("SHELL")
-			if shell == "" {
-				shell = "/bin/sh"
+			if err := cmd.Start(); err != nil {
+				return err
 			}
-
-			utils.Log("cd", reposFound[0].FullPath)
-			err := os.Chdir(reposFound[0].FullPath)
-			utils.PanicIf(err)
-
-			env := append(syscall.Environ(), "GHQ_LOOK="+reposFound[0].RelPath)
-			syscall.Exec(shell, []string{shell}, env)
+			return cmd.Wait()
 		}
-
+		shell := os.Getenv("SHELL")
+		if shell == "" {
+			shell = "/bin/sh"
+		}
+		logger.Log("cd", reposFound[0].FullPath)
+		if err := os.Chdir(reposFound[0].FullPath); err != nil {
+			return err
+		}
+		env := append(syscall.Environ(), "GHQ_LOOK="+reposFound[0].RelPath)
+		syscall.Exec(shell, []string{shell}, env)
 	default:
-		utils.Log("error", "More than one repositories are found; Try more precise name")
+		logger.Log("error", "More than one repositories are found; Try more precise name")
 		for _, repo := range reposFound {
-			utils.Log("error", "- "+strings.Join(repo.PathParts, "/"))
+			logger.Log("error", "- "+strings.Join(repo.PathParts, "/"))
 		}
 	}
 	return nil
@@ -398,23 +399,28 @@ func doImport(c *cli.Context) error {
 		if err == nil && command == "" {
 			err = fmt.Errorf("ghq.import.%s configuration not found", subCommand)
 		}
-		utils.DieIf(err)
+		if err != nil {
+			return err
+		}
 
 		// execute `sh -c 'COMMAND "$@"' -- ARG...`
 		// TODO: Windows
 		command = strings.TrimLeft(command, "!")
 		shellCommand := append([]string{"sh", "-c", command + ` "$@"`, "--"}, c.Args().Tail()...)
 
-		utils.Log("run", strings.Join(append([]string{command}, c.Args().Tail()...), " "))
+		logger.Log("run", strings.Join(append([]string{command}, c.Args().Tail()...), " "))
 
 		cmd := exec.Command(shellCommand[0], shellCommand[1:]...)
 		cmd.Stderr = os.Stderr
 
 		in, err = cmd.StdoutPipe()
-		utils.DieIf(err)
+		if err != nil {
+			return err
+		}
 
-		err = cmd.Start()
-		utils.DieIf(err)
+		if err := cmd.Start(); err != nil {
+			return err
+		}
 
 		finalize = cmd.Wait
 	}
@@ -424,35 +430,36 @@ func doImport(c *cli.Context) error {
 		line := scanner.Text()
 		url, err := NewURL(line)
 		if err != nil {
-			utils.Log("error", fmt.Sprintf("Could not parse URL <%s>: %s", line, err))
+			logger.Log("error", fmt.Sprintf("Could not parse URL <%s>: %s", line, err))
 			continue
 		}
 		if isSSH {
 			url, err = ConvertGitURLHTTPToSSH(url)
 			if err != nil {
-				utils.Log("error", fmt.Sprintf("Could not convert URL <%s>: %s", url, err))
+				logger.Log("error", fmt.Sprintf("Could not convert URL <%s>: %s", url, err))
 				continue
 			}
 		}
 
 		remote, err := NewRemoteRepository(url)
-		if utils.ErrorIf(err) {
+		if err != nil {
+			logger.Log("error", err.Error())
 			continue
 		}
 		if remote.IsValid() == false {
-			utils.Log("error", fmt.Sprintf("Not a valid repository: %s", url))
+			logger.Log("error", fmt.Sprintf("Not a valid repository: %s", url))
 			continue
 		}
 
-		getRemoteRepository(remote, doUpdate, isShallow, vcsBackend)
+		if err := getRemoteRepository(remote, doUpdate, isShallow, vcsBackend); err != nil {
+			return err
+		}
 	}
 	if err := scanner.Err(); err != nil {
-		utils.Log("error", fmt.Sprintf("While reading input: %s", err))
-		os.Exit(1)
+		return fmt.Errorf("While reading input: %s", err)
 	}
 
-	utils.DieIf(finalize())
-	return nil
+	return finalize()
 }
 
 func doRoot(c *cli.Context) error {

git.go

@@ -8,7 +8,7 @@ import (
 	"strings"
 	"syscall"
 
-	"github.com/motemen/ghq/utils"
+	"github.com/motemen/ghq/logger"
 )
 
 // GitConfigSingle fetches single git-config variable.
@@ -77,7 +77,7 @@ func gitVersionOutputSatisfies(gitVersionOutput string, baseVersionParts []uint)
 
 	for i, v := range baseVersionParts {
 		thisV64, err := strconv.ParseUint(versionStrings[i+1], 10, 0)
-		utils.PanicIf(err)
+		logger.PanicIf(err)
 
 		thisV := uint(thisV64)
 

local_repository.go

@@ -8,7 +8,7 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/motemen/ghq/utils"
+	"github.com/motemen/ghq/logger"
 )
 
 type LocalRepository struct {
@@ -205,12 +205,12 @@ func localRepositoryRoots() []string {
 	} else {
 		var err error
 		_localRepositoryRoots, err = GitConfigAll("ghq.root")
-		utils.PanicIf(err)
+		logger.PanicIf(err)
 	}
 
 	if len(_localRepositoryRoots) == 0 {
 		homeDir, err := os.UserHomeDir()
-		utils.PanicIf(err)
+		logger.PanicIf(err)
 
 		_localRepositoryRoots = []string{filepath.Join(homeDir, ".ghq")}
 	}
@@ -219,7 +219,7 @@ func localRepositoryRoots() []string {
 		path := filepath.Clean(v)
 		if _, err := os.Stat(path); err == nil {
 			_localRepositoryRoots[i], err = filepath.EvalSymlinks(path)
-			utils.PanicIf(err)
+			logger.PanicIf(err)
 		} else {
 			_localRepositoryRoots[i] = path
 		}

utils/log.go → logger/log.go

@@ -1,8 +1,6 @@
-package utils
+package logger
 
 import (
-	"os"
-
 	"github.com/motemen/go-colorine"
 )
 
@@ -29,22 +27,6 @@ func Log(prefix, message string) {
 	logger.Log(prefix, message)
 }
 
-func ErrorIf(err error) bool {
-	if err != nil {
-		Log("error", err.Error())
-		return true
-	}
-
-	return false
-}
-
-func DieIf(err error) {
-	if err != nil {
-		Log("error", err.Error())
-		os.Exit(1)
-	}
-}
-
 func PanicIf(err error) {
 	if err != nil {
 		panic(err)

utils/log_test.go → logger/log_test.go

@@ -1,4 +1,4 @@
-package utils
+package logger
 
 import "testing"
 

main.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/motemen/ghq/logger"
 	"github.com/urfave/cli"
 )
 
@@ -12,7 +13,14 @@ const Version = "0.10.0"
 var revision = "HEAD"
 
 func main() {
-	newApp().Run(os.Args)
+	if err := newApp().Run(os.Args); err != nil {
+		exitCode := 1
+		if excoder, ok := err.(cli.ExitCoder); ok {
+			exitCode = excoder.ExitCode()
+		}
+		logger.Log("error", err.Error())
+		os.Exit(exitCode)
+	}
 }
 
 func newApp() *cli.App {

remote_repository.go

@@ -6,6 +6,7 @@ import (
 	"regexp"
 	"strings"
 
+	"github.com/motemen/ghq/logger"
 	"github.com/motemen/ghq/utils"
 )
 
@@ -141,7 +142,7 @@ func (repo *OtherRepository) VCS() (*VCSBackend, *url.URL) {
 		//     vcs = github
 		vcs, err := GitConfig("--get-urlmatch", "ghq.vcs", repo.URL().String())
 		if err != nil {
-			utils.Log("error", err.Error())
+			logger.Log("error", err.Error())
 		}
 
 		if vcs == "git" || vcs == "github" {
@@ -168,7 +169,7 @@ func (repo *OtherRepository) VCS() (*VCSBackend, *url.URL) {
 			return FossilBackend, repo.URL()
 		}
 	} else {
-		utils.Log("warning", "This version of Git does not support `config --get-urlmatch`; per-URL settings are not available")
+		logger.Log("warning", "This version of Git does not support `config --get-urlmatch`; per-URL settings are not available")
 	}
 
 	// Detect VCS backend automatically