Initial commit

util.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"github.com/cosiner/argv"
+	"github.com/sirupsen/logrus"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func initTempDir() {
+	tmpdir := filepath.Join(os.TempDir(), "beemer")
+	err := os.Mkdir(tmpdir, 0700)
+	if err != nil && !os.IsExist(err) {
+		logrus.Fatal(err)
+	}
+
+	ctx.TempDir = tmpdir
+
+	logrus.WithField("dir", tmpdir).Infof("Initialized temp dir")
+}
+
+func moveToTempDir(name string) string {
+
+	dir := filepath.Join(ctx.TempDir, filepath.Dir(name))
+	newName := filepath.Join(dir, filepath.Base(name))
+	err := os.MkdirAll(dir, 0700)
+	if err != nil && !os.IsExist(err) {
+		logrus.Fatal(err)
+	}
+
+	absName, _ := filepath.Abs(name)
+	err = moveFile(absName, newName)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	logrus.WithFields(logrus.Fields{
+		"newName": newName,
+	}).Trace("Moved to temp dir")
+
+	return newName
+}
+
+func moveFile(src string, dst string) error {
+
+	err := os.Rename(src, dst)
+	if err != nil {
+		err := copyFile(src, dst)
+		if err != nil {
+			return err
+		}
+
+		err = os.Remove(src)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func copyFile(src string, dst string) error {
+
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+
+	out, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, in)
+	if err != nil {
+		return err
+	}
+	return out.Close()
+}
+
+func parseCommand(command string) func(string, string) (string, []string) {
+	args, _ := argv.Argv([]rune(command), argv.ParseEnv(os.Environ()), argv.Run)
+
+	return func(name string, dir string) (string, []string) {
+		newTokens := make([]string, len(args[0]))
+		copy(newTokens, args[0])
+
+		for i := range newTokens {
+			newTokens[i] = strings.Replace(newTokens[i], "%file", name,-1)
+			newTokens[i] = strings.Replace(newTokens[i], "%dir", dir,-1)
+		}
+		return args[0][0], newTokens[1:]
+	}
+}