groovy.io.PlatformLineWriter Maven / Gradle / Ivy
/*
* Copyright 2003-2008 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package groovy.io;
import java.io.BufferedWriter;
import java.io.Writer;
import java.io.IOException;
/**
* A buffered writer that gobbles any \r characters
* and replaces every \n with a platform specific newline.
* In many places Groovy normalises streams to only have \n
* characters but when creating files that must be used
* by other platform-aware tools, you sometimes want the
* newlines to match what the platform expects.
*
* @author Paul King
*/
public class PlatformLineWriter extends Writer {
private BufferedWriter writer;
public PlatformLineWriter(Writer out) {
writer = new BufferedWriter(out);
}
public PlatformLineWriter(Writer out, int sz) {
writer = new BufferedWriter(out, sz);
}
public void write(char cbuf[], int off, int len) throws IOException {
for (; len > 0; len--) {
char c = cbuf[off++];
if (c == '\n') {
writer.newLine();
} else if (c != '\r') {
writer.write(c);
}
}
}
public void flush() throws IOException {
writer.flush();
}
public void close() throws IOException {
writer.close();
}
}