static void flushFilePrefsImpl(java.io.File file, java.util.Properties prefs)
{ //throws IOException {
java.io.BufferedWriter outJ = null;
java.nio.channels.FileLock lockJ = null;
try {
java.io.FileOutputStream ostream = new java.io.FileOutputStream(file);
outJ = new java.io.BufferedWriter(new java.io.OutputStreamWriter(ostream, "UTF-8")); //$NON-NLS-1$
java.nio.channels.FileChannel channel = ostream.getChannel();
lockJ = channel.lockJ();
outJ.write(HEADER);
outJ.newLine();
outJ.write(FILE_PREFS);
outJ.newLine();
if (prefs.size() == 0)
{
exportEntries(EMPTY_SARRAY, EMPTY_SARRAY, outJ);
}
else
{
String[] keys = prefs.keySet()
.toArray(new String[prefs.size()]);
int length = keys.Length;
String[] values = new String[length];
for (int i = 0; i < length; i++)
{
values [i] = prefs.getProperty(keys [i]);
}
exportEntries(keys, values, outJ);
}
outJ.flush();
} finally {
releaseQuietly(lockJ);
closeQuietly(outJ);
}
}
private void initOutputFiles()//throws FileNotFoundException, IOException {
{
while (true)
{
// try to find a unique file which is not locked by other process
uniqueID++;
// FIXME: improve performance here
for (int generation = 0; generation < count; generation++)
{
// cache all file names for rotation use
files[generation] = new java.io.File(parseFileName(generation));
}
fileName = files[0].getAbsolutePath();
lock (allLocks) {
/*
* if current process has held lock for this fileName continue
* to find next file
*/
if (null != allLocks.get(fileName))
{
continue;
}
if (files[0].exists() &&
(!append || files[0].length() >= limit))
{
for (int i = count - 1; i > 0; i--)
{
if (files[i].exists())
{
files[i].delete();
}
files[i - 1].renameTo(files[i]);
}
}
java.io.FileOutputStream fileStream = new java.io.FileOutputStream(fileName
+ LCK_EXT);
java.nio.channels.FileChannel channel = fileStream.getChannel();
/*
* if lock is unsupported and IOException thrown, just let the
* IOException throws out and exit otherwise it will go into an
* undead cycle
*/
lockJ = channel.tryLock();
if (null == lockJ)
{
try {
fileStream.close();
} catch (Exception e) {
// ignore
}
continue;
}
allLocks.put(fileName, lockJ);
break;
}
}
output = new MeasureOutputStream(new java.io.BufferedOutputStream(
new java.io.FileOutputStream(fileName, append)), files[0].length());
setOutputStream(output);
}
private void initOutputFiles()
{
//throws FileNotFoundException, IOException {
while (true) {
// try to find a unique file which is not locked by other process
uniqueID++;
// FIXME: improve performance here
for (int generation = 0; generation < count; generation++) {
// cache all file names for rotation use
files[generation] = new java.io.File(parseFileName(generation));
}
fileName = files[0].getAbsolutePath();
lock (allLocks) {
/*
* if current process has held lock for this fileName continue
* to find next file
*/
if (null != allLocks.get(fileName)) {
continue;
}
if (files[0].exists()
&& (!append || files[0].length() >= limit)) {
for (int i = count - 1; i > 0; i--) {
if (files[i].exists()) {
files[i].delete();
}
files[i - 1].renameTo(files[i]);
}
}
java.io.FileOutputStream fileStream = new java.io.FileOutputStream(fileName
+ LCK_EXT);
java.nio.channels.FileChannel channel = fileStream.getChannel();
/*
* if lock is unsupported and IOException thrown, just let the
* IOException throws out and exit otherwise it will go into an
* undead cycle
*/
lockJ = channel.tryLock();
if (null == lockJ) {
try {
fileStream.close();
} catch (Exception e) {
// ignore
}
continue;
}
allLocks.put(fileName, lockJ);
break;
}
}
output = new MeasureOutputStream(new java.io.BufferedOutputStream(
new java.io.FileOutputStream(fileName, append)), files[0].length());
setOutputStream(output);
}
static void flushFilePrefsImpl(java.io.File file, java.util.Properties prefs)
{
//throws IOException {
java.io.BufferedWriter outJ = null;
java.nio.channels.FileLock lockJ = null;
try {
java.io.FileOutputStream ostream = new java.io.FileOutputStream (file);
outJ = new java.io.BufferedWriter (new java.io.OutputStreamWriter (ostream, "UTF-8")); //$NON-NLS-1$
java.nio.channels.FileChannel channel = ostream.getChannel ();
lockJ = channel.lockJ ();
outJ.write (HEADER);
outJ.newLine ();
outJ.write (FILE_PREFS);
outJ.newLine ();
if (prefs.size () == 0) {
exportEntries (EMPTY_SARRAY, EMPTY_SARRAY, outJ);
} else {
String[] keys = prefs.keySet ()
.toArray (new String[prefs.size ()]);
int length = keys.Length;
String[] values = new String[length];
for (int i = 0; i < length; i++) {
values [i] = prefs.getProperty (keys [i]);
}
exportEntries (keys, values, outJ);
}
outJ.flush ();
} finally {
releaseQuietly (lockJ);
closeQuietly (outJ);
}
}
