Move top level packages to internal.

2014-09-22 21:42:11 +02:00
parent fbdbd722b1
commit 14817e31f6
174 changed files with 252 additions and 254 deletions
--- a/internal/versioner/simple.go
+++ b/internal/versioner/simple.go
@@ -0,0 +1,120 @@
+// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
+// All rights reserved. Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+package versioner
+
+import (
+	"os"
+	"path/filepath"
+	"sort"
+	"strconv"
+
+	"github.com/syncthing/syncthing/internal/osutil"
+)
+
+func init() {
+	// Register the constructor for this type of versioner with the name "simple"
+	Factories["simple"] = NewSimple
+}
+
+// The type holds our configuration
+type Simple struct {
+	keep     int
+	repoPath string
+}
+
+// The constructor function takes a map of parameters and creates the type.
+func NewSimple(repoID, repoPath string, params map[string]string) Versioner {
+	keep, err := strconv.Atoi(params["keep"])
+	if err != nil {
+		keep = 5 // A reasonable default
+	}
+
+	s := Simple{
+		keep:     keep,
+		repoPath: repoPath,
+	}
+
+	if debug {
+		l.Debugf("instantiated %#v", s)
+	}
+	return s
+}
+
+// Move away the named file to a version archive. If this function returns
+// nil, the named file does not exist any more (has been archived).
+func (v Simple) Archive(filePath string) error {
+	fileInfo, err := os.Stat(filePath)
+	if err != nil {
+		if os.IsNotExist(err) {
+			if debug {
+				l.Debugln("not archiving nonexistent file", filePath)
+			}
+			return nil
+		} else {
+			return err
+		}
+	}
+
+	versionsDir := filepath.Join(v.repoPath, ".stversions")
+	_, err = os.Stat(versionsDir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			if debug {
+				l.Debugln("creating versions dir", versionsDir)
+			}
+			os.MkdirAll(versionsDir, 0755)
+			osutil.HideFile(versionsDir)
+		} else {
+			return err
+		}
+	}
+
+	if debug {
+		l.Debugln("archiving", filePath)
+	}
+
+	file := filepath.Base(filePath)
+	inRepoPath, err := filepath.Rel(v.repoPath, filepath.Dir(filePath))
+	if err != nil {
+		return err
+	}
+
+	dir := filepath.Join(versionsDir, inRepoPath)
+	err = os.MkdirAll(dir, 0755)
+	if err != nil && !os.IsExist(err) {
+		return err
+	}
+
+	ver := file + "~" + fileInfo.ModTime().Format("20060102-150405")
+	dst := filepath.Join(dir, ver)
+	if debug {
+		l.Debugln("moving to", dst)
+	}
+	err = osutil.Rename(filePath, dst)
+	if err != nil {
+		return err
+	}
+
+	versions, err := filepath.Glob(filepath.Join(dir, file+"~[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]-[0-9][0-9][0-9][0-9][0-9][0-9]"))
+	if err != nil {
+		l.Warnln("globbing:", err)
+		return nil
+	}
+
+	if len(versions) > v.keep {
+		sort.Strings(versions)
+		for _, toRemove := range versions[:len(versions)-v.keep] {
+			if debug {
+				l.Debugln("cleaning out", toRemove)
+			}
+			err = os.Remove(toRemove)
+			if err != nil {
+				l.Warnln("removing old version:", err)
+			}
+		}
+	}
+
+	return nil
+}