public static boolean copy(File src, File dest, CopyProgressListener l, boolean overwrite)
throws IOException {
if (dest.exists()) {
if (!dest.isFile()) {
throw new IOException("impossible to copy: destination is not a file: " + dest);
}
if (overwrite) {
if (!dest.canWrite()) {
dest.delete();
} // if dest is writable, the copy will overwrite it without requiring a delete
} else {
Message.verbose(dest + " already exists, nothing done");
return false;
}
}
copy(new FileInputStream(src), dest, l);
long srcLen = src.length();
long destLen = dest.length();
if (srcLen != destLen) {
dest.delete();
throw new IOException(
"size of source file "
+ src.toString()
+ "("
+ srcLen
+ ") differs from size of dest file "
+ dest.toString()
+ "("
+ destLen
+ ") - please retry");
}
dest.setLastModified(src.lastModified());
return true;
}
public static void symlink(File src, File dest, CopyProgressListener l, boolean overwrite)
throws IOException {
try {
if (dest.exists()) {
if (!dest.isFile()) {
throw new IOException("impossible to copy: destination is not a file: " + dest);
}
if (!overwrite) {
Message.verbose(dest + " already exists, nothing done");
return;
}
}
if (dest.getParentFile() != null) {
dest.getParentFile().mkdirs();
}
Runtime runtime = Runtime.getRuntime();
Message.verbose("executing 'ln -s -f " + src.getAbsolutePath() + " " + dest.getPath() + "'");
Process process =
runtime.exec(new String[] {"ln", "-s", "-f", src.getAbsolutePath(), dest.getPath()});
if (process.waitFor() != 0) {
InputStream errorStream = process.getErrorStream();
InputStreamReader isr = new InputStreamReader(errorStream);
BufferedReader br = new BufferedReader(isr);
StringBuffer error = new StringBuffer();
String line;
while ((line = br.readLine()) != null) {
error.append(line);
error.append('\n');
}
throw new IOException("error symlinking " + src + " to " + dest + ":\n" + error);
}
// check if the creation of the symbolic link was successful
if (!dest.exists()) {
throw new IOException("error symlinking: " + dest + " doesn't exists");
}
// check if the result is a true symbolic link
if (dest.getAbsolutePath().equals(dest.getCanonicalPath())) {
dest.delete(); // just make sure we do delete the invalid symlink!
throw new IOException("error symlinking: " + dest + " isn't a symlink");
}
} catch (IOException x) {
Message.verbose("symlink failed; falling back to copy");
StringWriter buffer = new StringWriter();
x.printStackTrace(new PrintWriter(buffer));
Message.debug(buffer.toString());
copy(src, dest, l, overwrite);
} catch (InterruptedException x) {
Thread.currentThread().interrupt();
}
}
protected void saveFile(String name, InputStream input) throws IOException {
FileUtil.copy(input, new File(this.dir, name), null);
}
public static void copy(InputStream src, OutputStream dest, CopyProgressListener l)
throws IOException {
copy(src, dest, l, true);
}
public static void copy(InputStream src, File dest, CopyProgressListener l) throws IOException {
if (dest.getParentFile() != null) {
dest.getParentFile().mkdirs();
}
copy(src, new FileOutputStream(dest), l);
}