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/*
*
* Copyright 2001-2004 The Ant-Contrib project
*
* 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 net.sf.antcontrib.cpptasks.compiler;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.Vector;
import org.apache.tools.ant.taskdefs.Execute;
import org.apache.tools.ant.taskdefs.ExecuteStreamHandler;
/**
* Implements ExecuteStreamHandler to capture the output of a Execute to an
* array of strings
*
* @author Curt Arnold
*/
public class CaptureStreamHandler implements ExecuteStreamHandler {
/**
* Runs an executable and captures the output in a String array
*
* @param cmdline
* command line arguments
* @return output of process
*/
public static String[] run(String[] cmdline) {
CaptureStreamHandler handler = new CaptureStreamHandler();
Execute exec = new Execute(handler);
exec.setCommandline(cmdline);
try {
int status = exec.execute();
} catch (IOException ex) {
}
return handler.getOutput();
}
private InputStream errorStream;
private InputStream fromProcess;
public CaptureStreamHandler() {
}
public String[] getOutput() {
String[] output;
if (fromProcess != null) {
Vector lines = new Vector(10);
try {
BufferedReader reader = new BufferedReader(
new InputStreamReader(errorStream));
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 100; j++) {
String line = reader.readLine();
if (line == null) {
reader = new BufferedReader(new InputStreamReader(
fromProcess));
break;
}
lines.addElement(line);
}
}
} catch (IOException ex) {
}
output = new String[lines.size()];
lines.copyInto(output);
return output;
}
output = new String[0];
return output;
}
/**
* Install a handler for the error stream of the subprocess.
*
* @param is
* input stream to read from the error stream from the
* subprocess
*/
public void setProcessErrorStream(InputStream is) throws IOException {
errorStream = is;
}
/**
* Install a handler for the input stream of the subprocess.
*
* @param os
* output stream to write to the standard input stream of the
* subprocess
*/
public void setProcessInputStream(OutputStream os) throws IOException {
os.close();
}
/**
* Install a handler for the output stream of the subprocess.
*
* @param is
* input stream to read from the error stream from the
* subprocess
*/
public void setProcessOutputStream(InputStream is) throws IOException {
fromProcess = is;
}
/**
* Start handling of the streams.
*/
public void start() throws IOException {
}
/**
* Stop handling of the streams - will not be restarted.
*/
public void stop() {
}
}
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