Re: Java search and replace?

From:

ram@zedat.fu-berlin.de (Stefan Ram)

Newsgroups:

comp.lang.java.programmer

Date:

20 Sep 2006 21:00:52 GMT

Message-ID:

<template-20060920230011@ram.dialup.fu-berlin.de>

"bugnthecode" <bugnthecode@gmail.com> writes:

Hello $user, my name is $name.

public class Main
{
  public static java.lang.String replace
  ( final java.lang.String template,
    final java.util.Map<java.lang.String,java.lang.String> map )
  { final java.lang.StringBuilder list =
    new java.lang.StringBuilder( "\\$(" );
    for( final java.lang.String key: map.keySet() )
    { list.append( key ); list.append( "|" ); }
    list.append( "[^\\s\\S])" );
    java.util.regex.Pattern pattern =
    java.util.regex.Pattern.compile( list.toString() );
    java.util.regex.Matcher matcher = pattern.matcher( template );
    final java.lang.StringBuffer stringBuffer = new java.lang.StringBuffer();
    while( matcher.find() )
    { final java.lang.String string = matcher.group( 1 );
      matcher.appendReplacement
      ( stringBuffer, map.get( string )); }
    matcher.appendTail( stringBuffer );
    return stringBuffer.toString(); }

  public static void main( final java.lang.String[] args )
  { final java.util.Map<java.lang.String,java.lang.String> map =
    new java.util.HashMap<java.lang.String,java.lang.String>();
    map.put( "user", "Mary" );
    map.put( "name", "Patricia" );
    java.lang.System.out.println
    ( replace( "Hello $user, my name is $name.", map ) ); }}

Hello Mary, my name is Patricia.