private boolean openWriter() {
if (printWriter == null) {
try {
FileUtils.createDirectories(FileUtils.getParent(fileName));
if (FileUtils.exists(fileName) && !FileUtils.canWrite(fileName)) {
// read only database: don't log error if the trace file
// can't be opened
return false;
}
fileWriter = IOUtils.getBufferedWriter(FileUtils.newOutputStream(fileName, true));
printWriter = new PrintWriter(fileWriter, true);
} catch (Exception e) {
logWritingError(e);
return false;
}
}
return true;
}
/**
* Restores database files.
*
* @param zipFileName the name of the backup file
* @param directory the directory name
* @param db the database name (null for all databases)
* @throws DbException if there is an IOException
*/
public static void execute(String zipFileName, String directory, String db) {
InputStream in = null;
try {
if (!FileUtils.exists(zipFileName)) {
throw new IOException("File not found: " + zipFileName);
}
String originalDbName = null;
int originalDbLen = 0;
if (db != null) {
originalDbName = getOriginalDbName(zipFileName, db);
if (originalDbName == null) {
throw new IOException("No database named " + db + " found");
}
if (originalDbName.startsWith(SysProperties.FILE_SEPARATOR)) {
originalDbName = originalDbName.substring(1);
}
originalDbLen = originalDbName.length();
}
in = FileUtils.newInputStream(zipFileName);
ZipInputStream zipIn = new ZipInputStream(in);
while (true) {
ZipEntry entry = zipIn.getNextEntry();
if (entry == null) {
break;
}
String fileName = entry.getName();
// restoring windows backups on linux and vice versa
fileName = fileName.replace('\\', SysProperties.FILE_SEPARATOR.charAt(0));
fileName = fileName.replace('/', SysProperties.FILE_SEPARATOR.charAt(0));
if (fileName.startsWith(SysProperties.FILE_SEPARATOR)) {
fileName = fileName.substring(1);
}
boolean copy = false;
if (db == null) {
copy = true;
} else if (fileName.startsWith(originalDbName + ".")) {
fileName = db + fileName.substring(originalDbLen);
copy = true;
}
if (copy) {
OutputStream o = null;
try {
o =
FileUtils.newOutputStream(
directory + SysProperties.FILE_SEPARATOR + fileName, false);
IOUtils.copy(zipIn, o);
o.close();
} finally {
IOUtils.closeSilently(o);
}
}
zipIn.closeEntry();
}
zipIn.closeEntry();
zipIn.close();
} catch (IOException e) {
throw DbException.convertIOException(e, zipFileName);
} finally {
IOUtils.closeSilently(in);
}
}