示例#1
3
func main() {
	var tmp *os.File
	var err os.Error

	flag.Parse()
	args := flag.Args()
	if len(args) == 1 {
		dir, _ := path.Split(args[0])
		tmp, err = ioutil.TempFile(dir, "")
		exitOnErr(err)
	} else if len(args) == 2 {
		tmp, err = os.Open(args[1], os.O_RDWR|os.O_CREAT, 0644)
		exitOnErr(err)
	} else {
		usage()
	}

	fname := args[0]
	tmpname := tmp.Name()

	exitOnErr(cdb.Make(tmp, bufio.NewReader(os.Stdin)))
	exitOnErr(tmp.Sync())
	exitOnErr(tmp.Close())
	exitOnErr(os.Rename(tmpname, fname))
}
示例#2
1
文件: util.go 项目: itsabot/abot
// CopyFileContents copies the contents of the file named src to the file named
// by dst. The file will be created if it does not already exist. If the
// destination file exists, all it's contents will be replaced by the contents
// of the source file.
//
// From http://stackoverflow.com/a/21067803
func CopyFileContents(src, dst string) (err error) {
	in, err := os.Open(src)
	if err != nil {
		return
	}
	defer in.Close()
	ext := filepath.Ext(dst)
	var out *os.File
	if ext == ".sh" {
		out, err = os.OpenFile(dst, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0766)
	} else {
		out, err = os.Create(dst)
	}
	if err != nil {
		return
	}
	defer func() {
		cerr := out.Close()
		if err == nil {
			err = cerr
		}
	}()
	if _, err = io.Copy(out, in); err != nil {
		return
	}
	err = out.Sync()
	return
}
示例#3
0
// CopyAs copies a file
func (fh *FileHandle) CopyAs(path string) (err error) {
	var src, dst *os.File

	// open src
	if src, err = os.Open(fh.Path); err != nil {
		return err
	}
	defer src.Close()

	// open dest
	if dst, err = os.Create(path); err != nil {
		return err
	}
	defer func() {
		closeErr := dst.Close()
		if err == nil {
			err = closeErr

			if err == nil {
				// copy success - update file name / path
				fh.Name = filepath.Base(path)
				fh.Path = path
			}
		}
	}()

	// copy
	if _, err = io.Copy(dst, src); err != nil {
		return
	}

	// sync
	err = dst.Sync()
	return
}
示例#4
0
文件: diskqueue.go 项目: rayleyva/nsq
// persistMetaData atomically writes state to the filesystem
func (d *DiskQueue) persistMetaData() error {
	var f *os.File
	var err error

	d.metaMutex.Lock()
	depth := d.depth
	readFileNum := d.readFileNum
	readPos := d.readPos
	writeFileNum := d.writeFileNum
	writePos := d.writePos
	d.metaMutex.Unlock()

	fileName := d.metaDataFileName()
	tmpFileName := fileName + ".tmp"

	// write to tmp file
	f, err = os.OpenFile(tmpFileName, os.O_RDWR|os.O_CREATE, 0600)
	if err != nil {
		return err
	}

	_, err = fmt.Fprintf(f, "%d\n%d,%d\n%d,%d\n",
		depth,
		readFileNum, readPos,
		writeFileNum, writePos)
	if err != nil {
		f.Close()
		return err
	}
	f.Sync()
	f.Close()

	// atomically rename
	return os.Rename(tmpFileName, fileName)
}
示例#5
0
文件: flv.go 项目: daobz/goflv
func CreateFile(name string) (flvFile *File, err error) {
	var file *os.File
	// Create file
	if file, err = os.Create(name); err != nil {
		return
	}
	// Write flv header
	if _, err = file.Write(HEADER_BYTES); err != nil {
		file.Close()
		return
	}

	// Sync to disk
	if err = file.Sync(); err != nil {
		file.Close()
		return
	}

	flvFile = &File{
		file:      file,
		name:      name,
		readOnly:  false,
		headerBuf: make([]byte, 11),
		duration:  0.0,
	}

	return
}
示例#6
0
func mapPairToCSV(colHeader string, inMap PairList, fh *os.File, geo *geoip.GeoIP) int {

	nb, err := fh.WriteString(colHeader + "\n")
	check(err)
	totalBytes := nb
	i := 0

	for _, v1 := range inMap {

		matches := regexp.MustCompile(`([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)`).FindStringSubmatch(v1.Key)
		if len(matches) >= 1 && geo != nil {
			record := geo.GetRecord(v1.Key)
			if record != nil {
				nb, err = fh.WriteString(v1.Key + csvd + strconv.Itoa(v1.Value) + csvd + record.City + csvd + record.CountryName + "\n")
			}
		} else {
			nb, err = fh.WriteString(v1.Key + csvd + strconv.Itoa(v1.Value) + "\n")
		}
		check(err)
		totalBytes += nb
		i++
	}
	fh.Sync()
	return totalBytes
}
示例#7
0
func (d *Daemon) handle(input link.Input, process *os.Process, stdin *os.File) error {
	if input.WindowSize != nil {
		setWinSize(stdin, input.WindowSize.Columns, input.WindowSize.Rows)
		process.Signal(syscall.SIGWINCH)
	} else if input.EOF {
		stdin.Sync()
		err := stdin.Close()
		if d.WithTty {
			process.Signal(syscall.SIGHUP)
		}
		if err != nil {
			return err
		}
	} else if input.Signal != nil {
		if input.Signal.Signal == garden.SignalTerminate {
			process.Signal(syscall.SIGTERM)
		} else if input.Signal.Signal == garden.SignalKill {
			process.Signal(syscall.SIGKILL)
		}
	} else {
		_, err := stdin.Write(input.StdinData)
		if err != nil {
			return err
		}
	}

	return nil
}
示例#8
0
文件: spawn.go 项目: julz/garden-runc
// Loop receiving and processing link requests on the given connection.
// The loop terminates when the connection is closed or an error occurs.
func processLinkRequests(conn net.Conn, stdinW *os.File, cmd *exec.Cmd, withTty bool) {
	decoder := gob.NewDecoder(conn)

	for {
		var input linkpkg.Input
		err := decoder.Decode(&input)
		if err != nil {
			break
		}

		if input.WindowSize != nil {
			setWinSize(stdinW, input.WindowSize.Columns, input.WindowSize.Rows)
			cmd.Process.Signal(syscall.SIGWINCH)
		} else if input.EOF {
			stdinW.Sync()
			err := stdinW.Close()
			if withTty {
				cmd.Process.Signal(syscall.SIGHUP)
			}
			if err != nil {
				conn.Close()
				break
			}
		} else {
			_, err := stdinW.Write(input.Data)
			if err != nil {
				conn.Close()
				break
			}
		}
	}
}
示例#9
0
文件: trap.go 项目: harche/docker
// DumpStacks appends the runtime stack into file in dir and returns full path
// to that file.
func DumpStacks(dir string) (string, error) {
	var (
		buf       []byte
		stackSize int
	)
	bufferLen := 16384
	for stackSize == len(buf) {
		buf = make([]byte, bufferLen)
		stackSize = runtime.Stack(buf, true)
		bufferLen *= 2
	}
	buf = buf[:stackSize]
	var f *os.File
	if dir != "" {
		path := filepath.Join(dir, fmt.Sprintf(stacksLogNameTemplate, strings.Replace(time.Now().Format(time.RFC3339), ":", "", -1)))
		var err error
		f, err = os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0666)
		if err != nil {
			return "", errors.Wrap(err, "failed to open file to write the goroutine stacks")
		}
		defer f.Close()
		defer f.Sync()
	} else {
		f = os.Stderr
	}
	if _, err := f.Write(buf); err != nil {
		return "", errors.Wrap(err, "failed to write goroutine stacks")
	}
	return f.Name(), nil
}
示例#10
0
文件: nginx.go 项目: drhurd/Seaport
// WriteConfigFile wirtes a valid nginx config to f
// Proxies are indicated in routes
// Other configuration specified in config
func WriteConfigFile(f *os.File, routes map[string]int, config Config) {
	var routesBuffer bytes.Buffer
	for path, port := range routes {
		locationStr := "\t\tlocation /%s {\n\t\t\treturn 302 /%s/;\n\t\t}\n\n\t\tlocation /%s/ {\n\t\t\tproxy_pass http://127.0.0.1:%d/;\n\t\t}\n"

		fmt.Fprintf(&routesBuffer, locationStr, path, path, path, port)
	}

	serverName := config.ServerName
	if serverName == "" {
		serverName = "localhost"
	}

	var rootRule string
	defaultPort := config.DefaultPort
	if defaultPort == 0 {
		rootRule = "return 404;"
	} else {
		rootRule = "proxy_pass http://127.0.0.1:" + strconv.Itoa(defaultPort) + ";"
	}

	fmt.Fprintf(f, configText, serverName, routesBuffer.String(), rootRule)

	err := f.Sync()
	if err != nil {
		log.Fatal("Error saving config file: ", err)
	}
}
示例#11
0
func readUCHAR8(file *os.File, s int64) ([]byte, int64) {
	buf := make([]byte, s)
	ntotal := int64(0)
	for {
		// read several times because Read might decide to stop intermittently
		buffer := make([]byte, int64(1024)*int64(1024)) // read a little bit
		n, err := file.Read(buffer)
		if ntotal+int64(n) > s {
			n = int(s - ntotal)
		}

		// copy to the real buffer buf
		copy(buf[ntotal:(ntotal+int64(n))], buffer[0:n])
		ntotal = ntotal + int64(n)

		if err == io.EOF {
			break
		}
		if err != nil {
			panic(err)
		}
	}
	file.Sync()
	return buf, ntotal
}
示例#12
0
文件: file.go 项目: tjyang/golibs
func Write(fn, str string, append bool) error {
	var (
		file *os.File
		err  error
	)
	if append {
		file, err = os.OpenFile(fn, os.O_CREATE|os.O_APPEND|os.O_WRONLY, os.FileMode(0666))
	} else {
		file, err = os.OpenFile(fn, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, os.FileMode(0666))
	}

	defer file.Close()

	if err != nil {
		return err
	}

	_, err = file.WriteString(str)
	if err != nil {
		return err
	}

	file.Sync()
	return nil
}
func Generate_d5sFile(file string, d5sConf *D5ServConf) (e error) {
	var f *os.File
	if file == NULL {
		f = os.Stdout
	} else {
		f, e = os.OpenFile(file, os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0600)
		ThrowErr(e)
		e = f.Truncate(0)
		ThrowErr(e)
		defer func() {
			f.Sync()
			f.Close()
		}()
	}
	if d5sConf == nil {
		d5sConf = new(D5ServConf)
		d5sConf.RSAKeys = GenerateRSAKeyPair()
	}
	desc := getImportableDesc(d5sConf)
	f.WriteString("#\n# deblocus server configuration\n#\n\n")
	for k, d := range desc {
		defaultVal := d.sType.Tag.Get("importable")
		f.WriteString(fmt.Sprintf("%-16s   %s\n", k, defaultVal))
	}
	f.WriteString("\n### Please take good care of this secret file during the server life cycle.\n")
	f.WriteString("### DON'T modify the following lines, unless you known what happens.\n\n")
	k := d5sConf.RSAKeys
	keyBytes := x509.MarshalPKCS1PrivateKey(k.priv)
	keyText := pem.EncodeToMemory(&pem.Block{
		Type:  SER_KEY_TYPE,
		Bytes: keyBytes,
	})
	f.Write(keyText)
	return
}
示例#14
0
func ensureSlot(item string) {
	var err error
	var fi *os.File

	slot, err := filepath.Glob(Slots)
	if err != nil {
		panic(err)
	}
	fi, err = os.OpenFile(fmt.Sprintf("%v/slots", slot[0]), os.O_RDWR|os.O_APPEND, 0666)
	if err != nil {
		panic(err)
	}
	defer fi.Close()

	// ensure the slot is not already written into the capemanager
	// (from: https://github.com/mrmorphic/hwio/blob/master/module_bb_pwm.go#L190)
	scanner := bufio.NewScanner(fi)
	for scanner.Scan() {
		line := scanner.Text()
		if strings.Index(line, item) > 0 {
			return
		}
	}

	fi.WriteString(item)
	fi.Sync()

	scanner = bufio.NewScanner(fi)
	for scanner.Scan() {
		line := scanner.Text()
		if strings.Index(line, item) > 0 {
			return
		}
	}
}
示例#15
0
文件: diskqueue.go 项目: Raysail/nsq
// persistMetaData atomically writes state to the filesystem
func (d *diskQueue) persistMetaData() error {
	var f *os.File
	var err error

	fileName := d.metaDataFileName()
	tmpFileName := fmt.Sprintf("%s.%d.tmp", fileName, rand.Int())

	// write to tmp file
	f, err = os.OpenFile(tmpFileName, os.O_RDWR|os.O_CREATE, 0600)
	if err != nil {
		return err
	}

	_, err = fmt.Fprintf(f, "%d\n%d,%d\n%d,%d\n",
		atomic.LoadInt64(&d.depth),
		d.readFileNum, d.readPos,
		d.writeFileNum, d.writePos)
	if err != nil {
		f.Close()
		return err
	}
	f.Sync()
	f.Close()

	// atomically rename
	return atomicRename(tmpFileName, fileName)
}
示例#16
0
文件: morass.go 项目: frogs/biogo
func (m *Morass) write() {
	writing := <-m.writable
	defer func() {
		m.pool <- writing[:0]
	}()

	sort.Sort(&writing)

	var tf *os.File
	if tf, m.err = ioutil.TempFile(m.dir, m.prefix); m.err != nil {
		return
	}

	enc := gob.NewEncoder(tf)
	dec := gob.NewDecoder(tf)
	f := &file{head: nil, file: tf, encoder: enc, decoder: dec}
	m.files = append(m.files, f)

	for _, e := range writing {
		if m.err = enc.Encode(&e); m.err != nil {
			return
		}
	}

	m.err = tf.Sync()
}
示例#17
0
文件: engine_test.go 项目: jeady/lmk
func build_config(
	rules string,
	c *C) (conf string, cleanup func()) {
	var fconf, rconf *os.File
	var err error
	var conf_test Config

	fconf, err = ioutil.TempFile("", "")
	if err != nil {
		panic(err)
	}
	rconf, err = ioutil.TempFile("", "")
	if err != nil {
		panic(err)
	}
	cleanup = func() {
		fconf.Close()
		rconf.Close()
	}

	// Trailing \n is required by go-config issue #3.
	fconf.WriteString(
		"[Settings]\nloglevel=debug\nrules=" + rconf.Name() + "\n")
	fconf.Sync()
	rconf.WriteString(rules + "\n")
	rconf.Sync()

	conf_test, err = NewFileConfig(fconf.Name())
	c.Assert(conf_test, Not(Equals), nil)
	c.Assert(err, Equals, nil)

	conf = fconf.Name()
	return
}
示例#18
0
文件: utils.go 项目: ZhHong/GO_PROJ
func writeLog(values string, log_type string) error {
	// LOG_2016_06_17.ERROR
	// 2016-06-17 :: log_string
	//timestr := time.Now()
	//outfile = "."
	//file,err := os.Create(outfile)
	//1 find log file if exists
	//2 if not exists create file
	//3 write append log
	filepath := "../logs/"
	infile := filepath + Today() + "_" + log_type + ".log"
	fileExist := checkFileIsExist(infile)

	var file *os.File
	var err error

	if fileExist {
		file, err = os.OpenFile(infile, os.O_APPEND, 0666)
		fmt.Println("file exsits")
	} else {
		file, err = os.Create(infile)
		fmt.Println("file not exists")
	}
	checkError(err)
	n, err := io.WriteString(file, values+"\n")
	fmt.Println("write len ====%d", n)
	checkError(err)
	file.Sync()
	defer file.Close()
	return nil
}
示例#19
0
// persistMetaData atomically writes state to the filesystem
func (d *diskQueueReader) persistMetaData() error {
	var f *os.File
	var err error

	fileName := d.metaDataFileName(true)
	tmpFileName := fmt.Sprintf("%s.%d.tmp", fileName, rand.Int())

	// write to tmp file
	f, err = os.OpenFile(tmpFileName, os.O_RDWR|os.O_CREATE, 0644)
	if err != nil {
		return err
	}

	_, err = fmt.Fprintf(f, "%d\n%d\n%d,%d,%d\n%d,%d,%d\n",
		d.confirmedQueueInfo.TotalMsgCnt(),
		d.queueEndInfo.totalMsgCnt,
		d.confirmedQueueInfo.EndOffset.FileNum, d.confirmedQueueInfo.EndOffset.Pos, d.confirmedQueueInfo.Offset(),
		d.queueEndInfo.EndOffset.FileNum, d.queueEndInfo.EndOffset.Pos, d.queueEndInfo.Offset())
	if err != nil {
		f.Close()
		return err
	}
	f.Sync()
	f.Close()

	// atomically rename
	return util.AtomicRename(tmpFileName, fileName)
}
示例#20
0
func (t *FileConfigTest) TestRulesFileDoesNotExist(c *C) {
	var fconf, rconf *os.File
	var err error
	var conf Config

	fconf, err = ioutil.TempFile("", "")
	if err != nil {
		panic(err)
	}
	rconf, err = ioutil.TempFile("", "")
	if err != nil {
		panic(err)
	}
	defer (func() {
		fconf.Close()
		rconf.Close()
	})()

	// Trailing \n is required by go-config issue #3.
	fconf.WriteString("[Settings]\nloglevel=debug\nrules=\n")
	fconf.Sync()

	conf, err = NewFileConfig(fconf.Name())
	c.Check(conf, Equals, (*FileConfig)(nil))
	c.Check(err, Not(Equals), nil)
}
示例#21
0
func (t *FileConfigTest) TestLoadsRelativeRulesPath(c *C) {
	var fconf, rconf *os.File
	var err error
	var conf Config

	fconf, err = ioutil.TempFile("", "")
	if err != nil {
		panic(err)
	}
	rconf, err = ioutil.TempFile("", "")
	if err != nil {
		panic(err)
	}
	defer (func() {
		fconf.Close()
		rconf.Close()
	})()

	path, _ := filepath.Rel(filepath.Dir(fconf.Name()), rconf.Name())

	// Trailing \n is required by go-config issue #3.
	fconf.WriteString("[Settings]\nloglevel=debug\nrules=" + path + "\n")
	fconf.Sync()

	conf, err = NewFileConfig(fconf.Name())
	c.Assert(conf, Not(Equals), nil)
	c.Assert(err, Equals, nil)
}
示例#22
0
func load_config(
	config string,
	rules string,
	c *C) (conf *FileConfig, cleanup func()) {
	var fconf, rconf *os.File
	var err error

	fconf, err = ioutil.TempFile("", "")
	if err != nil {
		panic(err)
	}
	rconf, err = ioutil.TempFile("", "")
	if err != nil {
		panic(err)
	}
	cleanup = func() {
		fconf.Close()
		rconf.Close()
	}

	// Trailing \n is required by go-config issue #3.
	fconf.WriteString(
		"[Settings]\n" + config + "\n" + "rules=" + rconf.Name() + "\n")
	fconf.Sync()
	rconf.WriteString(rules + "\n")
	rconf.Sync()

	conf, err = NewFileConfig(fconf.Name())
	c.Assert(conf, Not(Equals), nil)
	c.Assert(err, Equals, nil)
	return
}
示例#23
0
文件: server.go 项目: ryanslade/tftp
func fileCleanup(f *os.File) {
	if err := f.Sync(); err != nil {
		log.Printf("Error syncing %s, %v", f.Name(), err)
	}
	if err := f.Close(); err != nil {
		log.Printf("Error closing file %s, %v", f.Name(), err)
	}
}
示例#24
0
func writeToFile(file *os.File, data []byte, offset int64, whence int) {
	_, err := file.Write(data)
	Expect(err).ToNot(HaveOccurred())
	err = file.Sync()
	Expect(err).ToNot(HaveOccurred())
	_, err = file.Seek(offset, whence)
	Expect(err).ToNot(HaveOccurred())
}
示例#25
0
func flushLogFile(File *os.File) {
	for _ = range time.NewTicker(300 * time.Second).C {
		if File == nil {
			return
		}
		File.Sync()
	}
}
示例#26
0
func shutdownLogging(logFile *os.File) {
	// flush and close the file
	if logFile != nil {
		log.Println("INFO: closing log file")
		logFile.Sync()
		logFile.Close()
	}
}
示例#27
0
func TestFsnotifyDeleteWatchedDir(t *testing.T) {
	watcher := newWatcher(t)
	defer watcher.Close()

	// Create directory to watch
	testDir := tempMkdir(t)
	defer os.RemoveAll(testDir)

	// Create a file before watching directory
	testFileAlreadyExists := filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
	{
		var f *os.File
		f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
		if err != nil {
			t.Fatalf("creating test file failed: %s", err)
		}
		f.Sync()
		f.Close()
	}

	addWatch(t, watcher, testDir)

	// Add a watch for testFile
	addWatch(t, watcher, testFileAlreadyExists)

	// Receive errors on the error channel on a separate goroutine
	go func() {
		for err := range watcher.Error {
			t.Fatalf("error received: %s", err)
		}
	}()

	// Receive events on the event channel on a separate goroutine
	eventstream := watcher.Event
	var deleteReceived counter
	go func() {
		for event := range eventstream {
			// Only count relevant events
			if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFileAlreadyExists) {
				t.Logf("event received: %s", event)
				if event.IsDelete() {
					deleteReceived.increment()
				}
			} else {
				t.Logf("unexpected event received: %s", event)
			}
		}
	}()

	os.RemoveAll(testDir)

	// We expect this event to be received almost immediately, but let's wait 500 ms to be sure
	time.Sleep(500 * time.Millisecond)
	dReceived := deleteReceived.value()
	if dReceived < 2 {
		t.Fatalf("did not receive at least %d delete events, received %d after 500 ms", 2, dReceived)
	}
}
示例#28
0
func copyFile(sourceFile, targetFile *os.File) {
	_, err := io.Copy(targetFile, sourceFile)
	defer sourceFile.Close()
	defer targetFile.Close()
	if err != nil {
		log.Println(err)
	}
	targetFile.Sync()
}
示例#29
0
文件: logger.go 项目: reuteran/2013
func logger(f *os.File, c chan string) {

	for x := range c {
		f.WriteString(fmt.Sprintf("%s - %s\n", time.Now().Format("2006-01-02 15:04:05"), x))
		f.Sync()
	}
	f.Close()

}
示例#30
0
func TestRemovalOfWatch(t *testing.T) {
	var testDir string = testTempDir()

	// Create directory to watch
	if err := os.Mkdir(testDir, 0777); err != nil {
		t.Fatalf("failed to create test directory: %s", err)
	}
	defer os.RemoveAll(testDir)

	// Create a file before watching directory
	var testFileAlreadyExists string = filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
	{
		var f *os.File
		f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
		if err != nil {
			t.Fatalf("creating test file failed: %s", err)
		}
		f.Sync()
		f.Close()
	}

	watcher, err := NewWatcher()
	if err != nil {
		t.Fatalf("NewWatcher() failed: %s", err)
	}
	defer watcher.Close()

	watcher.Watch(testDir)
	err = watcher.RemoveWatch(testDir)
	if err != nil {
		t.Fatalf("Could not remove the watch: %v\n", err)
	}

	go func() {
		select {
		case ev := <-watcher.Event:
			t.Fatalf("We received event: %v\n", ev)
		case <-time.After(500 * time.Millisecond):
			t.Log("No event received, as expected.")
		}
	}()

	time.Sleep(200 * time.Millisecond)
	// Modify the file outside of the watched dir
	f, err := os.Open(testFileAlreadyExists)
	if err != nil {
		t.Fatalf("Open test file failed: %s", err)
	}
	f.WriteString("data")
	f.Sync()
	f.Close()
	err = os.Chmod(testFileAlreadyExists, 0700)
	if err != nil {
		t.Fatalf("chmod failed: %s", err)
	}
	time.Sleep(400 * time.Millisecond)
}