| /* |
| * |
| * 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.qpid.proton.messenger.impl; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| |
| /** |
| * Transform |
| * |
| * @deprecated Messenger will be removed from upcoming proton-j releases. |
| */ |
| class Transform |
| { |
| |
| private static class Rule { |
| |
| String _pattern; |
| String _substitution; |
| |
| Pattern _compiled; |
| StringBuilder _sb = new StringBuilder(); |
| boolean _matched = false; |
| String _result = null; |
| |
| Rule(String pattern, String substitution) |
| { |
| _pattern = pattern; |
| _substitution = substitution; |
| _compiled = Pattern.compile(_pattern.replace("*", "(.*)").replace("%", "([^/]*)")); |
| } |
| |
| boolean apply(String src) { |
| _matched = false; |
| _result = null; |
| Matcher m = _compiled.matcher(src); |
| if (m.matches()) { |
| _matched = true; |
| if (_substitution != null) { |
| _sb.setLength(0); |
| int limit = _substitution.length(); |
| int idx = 0; |
| while (idx < limit) { |
| char c = _substitution.charAt(idx); |
| switch (c) { |
| case '$': |
| idx++; |
| if (idx < limit) { |
| c = _substitution.charAt(idx); |
| } else { |
| throw new IllegalStateException("substition index truncated"); |
| } |
| |
| if (c == '$') { |
| _sb.append(c); |
| idx++; |
| } else { |
| int num = 0; |
| while (Character.isDigit(c)) { |
| num *= 10; |
| num += c - '0'; |
| idx++; |
| c = idx < limit ? _substitution.charAt(idx) : '\0'; |
| } |
| if (num > 0) { |
| _sb.append(m.group(num)); |
| } else { |
| throw new IllegalStateException |
| ("bad substitution index at character[" + |
| idx + "]: " + _substitution); |
| } |
| } |
| break; |
| default: |
| _sb.append(c); |
| idx++; |
| break; |
| } |
| } |
| _result = _sb.toString(); |
| } |
| } |
| |
| return _matched; |
| } |
| |
| boolean matched() { |
| return _matched; |
| } |
| |
| String result() { |
| return _result; |
| } |
| |
| } |
| |
| private List<Rule> _rules = new ArrayList<Rule>(); |
| private Rule _matched = null; |
| |
| public void rule(String pattern, String substitution) |
| { |
| _rules.add(new Rule(pattern, substitution)); |
| } |
| |
| public boolean apply(String src) |
| { |
| _matched = null; |
| |
| for (Rule rule: _rules) { |
| if (rule.apply(src)) { |
| _matched = rule; |
| break; |
| } |
| } |
| |
| return _matched != null; |
| } |
| |
| public boolean matched() |
| { |
| return _matched != null; |
| } |
| |
| public String result() |
| { |
| return _matched != null ? _matched.result() : null; |
| } |
| |
| } |