/** @throws IOException */
@Test
public void testNewlines() throws IOException {
final File temp = File.createTempFile("io-helper", ".txt");
try {
IOHelper.write(temp, "\n\n");
assertThat(IOHelper.readToString(temp), is("\n\n"));
} finally {
temp.delete();
}
}
public static void copyFile(File from, File to) throws IOException {
FileChannel in = new FileInputStream(from).getChannel();
FileChannel out = new FileOutputStream(to).getChannel();
try {
if (LOG.isTraceEnabled()) {
LOG.trace("Using FileChannel to copy from: " + in + " to: " + out);
}
long size = in.size();
long position = 0;
while (position < size) {
position += in.transferTo(position, BUFFER_SIZE, out);
}
} finally {
IOHelper.close(in, from.getName(), LOG);
IOHelper.close(out, to.getName(), LOG);
}
}
public static String removeXmlns(File file) throws IOException {
InputStream forEncodingInput = new FileInputStream(file);
String encoding = XMLHelper.getXMLEncoding(forEncodingInput);
forEncodingInput.close();
InputStream input = new FileInputStream(file);
String xml = IOHelper.toString(encoding, input);
xml = XMLHelper.removeXmlns(xml);
input.close();
return xml;
}
/**
* Attempts to grab the lock for the given file, returning a FileLock if the lock has been
* created; otherwise it returns null
*/
public static FileLocker getLock(File lockFile) {
lockFile.getParentFile().mkdirs();
if (!lockFile.exists()) {
try {
IOHelper.write(lockFile, "I have the lock!");
lockFile.deleteOnExit();
return new FileLocker(lockFile);
} catch (IOException e) {
// Ignore
}
}
return null;
}
/** {@inheritDoc} */
public void writeTo(
DataSource t,
Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders,
OutputStream entityStream)
throws IOException {
InputStream in = t.getInputStream();
try {
IOHelper.write(in, entityStream);
} finally {
in.close();
}
}
private static Properties loadLog4jProperties() {
try {
File file = FileHelper.getFileByClassLoader("log4j.properties");
Properties props = new Properties();
FileInputStream in = new FileInputStream(file);
try {
props.load(in);
} finally {
IOHelper.close(in, null);
}
return props;
} catch (FileNotFoundException e) {
GLogger.warn("not found log4j.properties, cause:" + e);
return new Properties();
} catch (IOException e) {
GLogger.warn("load log4j.properties occer error, cause:" + e);
return new Properties();
}
}
public static String getXMLEncoding(InputStream inputStream)
throws UnsupportedEncodingException, IOException {
return getXMLEncoding(IOHelper.toString("UTF-8", inputStream));
}
