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     1 /*
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     2 Copyright (c) 2008  Franklin Schmidt <fschmidt@gmail.com>
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     3 
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     4 Permission is hereby granted, free of charge, to any person obtaining a copy
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     5 of this software and associated documentation files (the "Software"), to deal
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     6 in the Software without restriction, including without limitation the rights
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     7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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     8 copies of the Software, and to permit persons to whom the Software is
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     9 furnished to do so, subject to the following conditions:
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    10 
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    11 The above copyright notice and this permission notice shall be included in
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    12 all copies or substantial portions of the Software.
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    13 
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    14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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    15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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    16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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    17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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    18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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    19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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    20 THE SOFTWARE.
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    21 */
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    22 
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    23 package fschmidt.tools;
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    24 
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    25 import java.io.InputStreamReader;
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    26 import java.io.File;
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    27 import java.util.regex.Pattern;
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    28 import java.util.regex.Matcher;
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    29 import fschmidt.util.java.IoUtils;
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    30 
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    31 
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    32 public final class Replace {
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    33 	public static void main(String args[]) throws Exception {
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    34 		if( args.length==0 ) {
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    35 			System.err.println("usage:\njava fschmidt.tools.Replace [pattern] [files...] <<end\n[replacement_text]\nend");
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    36 			return;
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    37 		}
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    38 		Pattern ptn = Pattern.compile(args[0]);
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    39 		String replacement = IoUtils.readAll(new InputStreamReader(System.in));
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    40 		for( int i=1; i<args.length; i++ ) {
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    41 			File file = new File(args[i]);
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    42 			String content = IoUtils.read(file);
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    43 			Matcher m = ptn.matcher(content);
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    44 			if( m.find() ) {
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    45 				System.out.println("replacing "+file);
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    46 				content = content.substring(0,m.start(1)) + replacement + content.substring(m.end(1));
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    47 				IoUtils.write(file,content);
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    48 			}
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    49 		}
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    50 	}
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    51 }
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