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/*******************************************************************************
* Copyright (c) 2004 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.launch;
import java.util.ArrayList;
import org.eclipse.cdt.debug.core.ICDTLaunchConfigurationConstants;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.variables.IStringVariableManager;
import org.eclipse.core.variables.VariablesPlugin;
import org.eclipse.debug.core.ILaunchConfiguration;
/**
* Utility methods.
*/
public class LaunchUtils {
private static class ArgumentParser {
private String fArgs;
private int fIndex = 0;
private int ch = -1;
public ArgumentParser( String args ) {
fArgs = args;
}
public String[] parseArguments() {
ArrayList v = new ArrayList();
ch = getNext();
while( ch > 0 ) {
while( Character.isWhitespace( (char)ch ) )
ch = getNext();
if ( ch == '"' ) {
v.add( parseString() );
}
else {
v.add( parseToken() );
}
}
String[] result = new String[v.size()];
v.toArray( result );
return result;
}
private int getNext() {
if ( fIndex < fArgs.length() )
return fArgs.charAt( fIndex++ );
return -1;
}
private String parseString() {
StringBuffer buf = new StringBuffer();
ch = getNext();
while( ch > 0 && ch != '"' ) {
if ( ch == '\\' ) {
ch = getNext();
if ( ch != '"' ) { // Only escape double quotes
buf.append( '\\' );
}
}
if ( ch > 0 ) {
buf.append( (char)ch );
ch = getNext();
}
}
ch = getNext();
return buf.toString();
}
private String parseToken() {
StringBuffer buf = new StringBuffer();
while( ch > 0 && !Character.isWhitespace( (char)ch ) ) {
if ( ch == '\\' ) {
ch = getNext();
if ( ch > 0 ) {
if ( ch != '"' ) { // Only escape double quotes
buf.append( '\\' );
}
buf.append( (char)ch );
ch = getNext();
}
else if ( ch == -1 ) { // Don't lose a trailing backslash
buf.append( '\\' );
}
}
else if ( ch == '"' ) {
buf.append( parseString() );
}
else {
buf.append( (char)ch );
ch = getNext();
}
}
return buf.toString();
}
}
/**
* For given launch configuration returns the program arguments as
* an array of individual arguments.
*/
public static String[] getProgramArgumentsArray( ILaunchConfiguration config ) throws CoreException {
return parseArguments( getProgramArguments( config ) );
}
/**
* Returns the program arguments as a String.
*/
public static String getProgramArguments(ILaunchConfiguration config) throws CoreException {
String args = config.getAttribute(ICDTLaunchConfigurationConstants.ATTR_PROGRAM_ARGUMENTS, (String)null);
if (args != null) {
args = getStringVariableManager().performStringSubstitution(args);
}
return args;
}
/**
* Convenience method.
*/
public static IStringVariableManager getStringVariableManager() {
return VariablesPlugin.getDefault().getStringVariableManager();
}
private static String[] parseArguments( String args ) {
if ( args == null )
return new String[0];
ArgumentParser parser = new ArgumentParser( args );
String[] res = parser.parseArguments();
return res;
}
}
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