| /* Copyright 2004 The Apache Software Foundation |
| * |
| * 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 repackage; |
| |
| import java.io.*; |
| |
| public class EditBuildScript |
| { |
| // |
| // usgae: edit buildfile token new-value |
| // |
| |
| public static void main ( String[] args ) |
| throws Exception |
| { |
| if (args.length != 3) |
| throw new IllegalArgumentException( "Wrong number of arguments" ); |
| |
| args[ 0 ] = args[ 0 ].replace( '/', File.separatorChar ); |
| |
| File buildFile = new File( args[ 0 ] ); |
| |
| StringBuffer sb = readFile( buildFile ); |
| |
| String tokenStr = "<property name=\"" + args[ 1 ] + "\" value=\""; |
| |
| int i = sb.indexOf( tokenStr ); |
| |
| if (i < 0) |
| throw new IllegalArgumentException( "Can't find token: " + tokenStr ); |
| |
| int j = i + tokenStr.length(); |
| |
| while ( sb.charAt( j ) != '"' ) |
| j++; |
| |
| sb.replace( i + tokenStr.length(), j, args[ 2 ] ); |
| |
| writeFile( buildFile, sb ); |
| } |
| |
| static StringBuffer readFile ( File f ) |
| throws IOException |
| { |
| InputStream in = new FileInputStream( f ); |
| Reader r = new InputStreamReader( in ); |
| StringWriter w = new StringWriter(); |
| |
| copy( r, w ); |
| |
| w.close(); |
| r.close(); |
| in.close(); |
| |
| return w.getBuffer(); |
| } |
| |
| static void writeFile ( File f, StringBuffer chars ) |
| throws IOException |
| { |
| OutputStream out = new FileOutputStream( f ); |
| Writer w = new OutputStreamWriter( out ); |
| Reader r = new StringReader( chars.toString() ); |
| |
| copy( r, w ); |
| |
| r.close(); |
| w.close(); |
| out.close(); |
| } |
| |
| static void copy ( Reader r, Writer w ) throws IOException |
| { |
| char[] buffer = new char [ 1024 * 16 ]; |
| |
| for ( ; ; ) |
| { |
| int n = r.read( buffer, 0, buffer.length ); |
| |
| if (n < 0) |
| break; |
| |
| w.write( buffer, 0, n ); |
| } |
| } |
| } |