| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.tools.ant.taskdefs; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.File; |
| import java.io.FileReader; |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.util.Hashtable; |
| import java.util.StringTokenizer; |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.Task; |
| |
| /** |
| * Keyword substitution. Input file is written to output file. |
| * Do not make input file same as output file. |
| * Keywords in input files look like this: @foo@. See the docs for the |
| * setKeys method to understand how to do the substitutions. |
| * |
| * @since Ant 1.1 |
| * @deprecated KeySubst is deprecated since Ant 1.1. Use Filter + Copy |
| * instead. |
| */ |
| public class KeySubst extends Task { |
| private File source = null; |
| private File dest = null; |
| private String sep = "*"; |
| private Hashtable replacements = new Hashtable(); |
| |
| /** |
| * Do the execution. |
| * @throws BuildException on error |
| */ |
| public void execute() throws BuildException { |
| log("!! KeySubst is deprecated. Use Filter + Copy instead. !!"); |
| log("Performing Substitutions"); |
| if (source == null || dest == null) { |
| log("Source and destinations must not be null"); |
| return; |
| } |
| BufferedReader br = null; |
| BufferedWriter bw = null; |
| try { |
| br = new BufferedReader(new FileReader(source)); |
| dest.delete(); |
| bw = new BufferedWriter(new FileWriter(dest)); |
| |
| String line = null; |
| String newline = null; |
| line = br.readLine(); |
| while (line != null) { |
| if (line.length() == 0) { |
| bw.newLine(); |
| } else { |
| newline = KeySubst.replace(line, replacements); |
| bw.write(newline); |
| bw.newLine(); |
| } |
| line = br.readLine(); |
| } |
| bw.flush(); |
| } catch (IOException ioe) { |
| ioe.printStackTrace(); |
| } finally { |
| if (bw != null) { |
| try { |
| bw.close(); |
| } catch (IOException e) { |
| // ignore |
| } |
| } |
| if (br != null) { |
| try { |
| br.close(); |
| } catch (IOException e) { |
| // ignore |
| } |
| } |
| } |
| } |
| |
| /** |
| * Set the source file. |
| * @param s the source file |
| */ |
| public void setSrc(File s) { |
| this.source = s; |
| } |
| |
| /** |
| * Set the destination file. |
| * @param dest the destination file |
| */ |
| public void setDest(File dest) { |
| this.dest = dest; |
| } |
| |
| /** |
| * Sets the separator between name=value arguments |
| * in setKeys(). By default it is "*". |
| * @param sep the separator string |
| */ |
| public void setSep(String sep) { |
| this.sep = sep; |
| } |
| /** |
| * Sets the keys. |
| * |
| * Format string is like this: |
| * <p> |
| * name=value*name2=value |
| * <p> |
| * Names are case sensitive. |
| * <p> |
| * Use the setSep() method to change the * to something else |
| * if you need to use * as a name or value. |
| * @param keys a <code>String</code> value |
| */ |
| public void setKeys(String keys) { |
| if (keys != null && keys.length() > 0) { |
| StringTokenizer tok = |
| new StringTokenizer(keys, this.sep, false); |
| while (tok.hasMoreTokens()) { |
| String token = tok.nextToken().trim(); |
| StringTokenizer itok = |
| new StringTokenizer(token, "=", false); |
| |
| String name = itok.nextToken(); |
| String value = itok.nextToken(); |
| replacements.put(name, value); |
| } |
| } |
| } |
| |
| |
| /** |
| * A test method. |
| * @param args not used |
| */ |
| public static void main(String[] args) { |
| try { |
| Hashtable hash = new Hashtable(); |
| hash.put("VERSION", "1.0.3"); |
| hash.put("b", "ffff"); |
| System.out.println(KeySubst.replace("$f ${VERSION} f ${b} jj $", |
| hash)); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| /** |
| * Does replacement on text using the hashtable of keys. |
| * @param origString an input string |
| * @param keys mapping of keys to values |
| * @return the string with the replacements in it. |
| * @throws BuildException on error |
| */ |
| public static String replace(String origString, Hashtable keys) |
| throws BuildException { |
| StringBuffer finalString = new StringBuffer(); |
| int index = 0; |
| int i = 0; |
| String key = null; |
| // CheckStyle:MagicNumber OFF |
| while ((index = origString.indexOf("${", i)) > -1) { |
| key = origString.substring(index + 2, origString.indexOf("}", |
| index + 3)); |
| finalString.append (origString.substring(i, index)); |
| if (keys.containsKey(key)) { |
| finalString.append (keys.get(key)); |
| } else { |
| finalString.append ("${"); |
| finalString.append (key); |
| finalString.append ("}"); |
| } |
| i = index + 3 + key.length(); |
| } |
| // CheckStyle:MagicNumber ON |
| finalString.append (origString.substring(i)); |
| return finalString.toString(); |
| } |
| } |