mcs/class/System/System.Text.RegularExpressions/ReplacementData.jvm.cs

   1 //
   2 // ReplacementData.jvm.cs
   3 //
   4 // Author:
   5 //      Arina Itkes  <arinai@mainsoft.com>
   6 //
   7 // Copyright (C) 2007 Mainsoft, Inc.
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.Collections.Generic;
  33 using System.Text;
  34 using java.util.regex;
  35 using java.lang;
  36
  37 namespace System.Text.RegularExpressions
  38 {
  39         sealed class ReplacementData
  40         {
  41                 private const string SINGLE_DOLLAR_PATTERN = @"(?<=(?:\A|[^\\])(?:\\{2}){0,1073741823})\$(?:\{(\w+)\}|(\d+))?";
  42                 private const string DOUBLE_DOLLAR_PATTERN =            @"(?<=(?:\A|[^\\])(?:\\{2}){0,1073741823})\$\$";
  43                 private const string BACKSLASH_PATTERN = @"\\";
  44                 private const string COPY_ENTIRE_MATCH_PATTERN =        @"(?<=(?:\A|[^\\])(?:\\{2}){0,1073741823})\\\$\&";
  45                 private const string INPUT_BEFORE_MATCH_PATTERN =       @"(?<=(?:\A|[^\\])(?:\\{2}){0,1073741823})\\\$\`";
  46                 private const string INPUT_AFTER_MATCH_PATTERN =        @"(?<=(?:\A|[^\\])(?:\\{2}){0,1073741823})\\\$\'";
  47                 private const string LAST_CAPTURED_GROUP_PATTERN =      @"(?<=(?:\A|[^\\])(?:\\{2}){0,1073741823})\\\$\+";
  48                 private const string INPUT_PATTERN =                            @"(?<=(?:\A|[^\\])(?:\\{2}){0,1073741823})\\\$_";
  49                 private const string JAVA_DOLLAR = @"\\\$";
  50                 private const string JAVA_BACKSLASH = @"\\\\";
  51
  52                 internal static string Reformat (Regex regex, string replacement) {
  53
  54                         replacement = JavaUtils.ReplaceAll (replacement, BACKSLASH_PATTERN, JAVA_BACKSLASH);
  55                         replacement = JavaUtils.ReplaceAll (replacement, DOUBLE_DOLLAR_PATTERN, JAVA_DOLLAR);
  56
  57                         Pattern p = Pattern.compile (SINGLE_DOLLAR_PATTERN);
  58                         Matcher m = p.matcher ((CharSequence) (object) replacement);
  59
  60                         StringBuffer sb = new StringBuffer ();
  61                         while (m.find ()) {
  62                                 if (m.start (1) >= 0) {
  63                                         int groupNumber = regex.GroupNumberFromName (m.group (1));
  64                                         if (groupNumber >= 0) {
  65                                                 m.appendReplacement (sb, @"\$" + regex.GetJavaNumberByNetNumber (groupNumber));
  66                                                 continue;
  67                                         }
  68                                         if (int.TryParse (m.group (1), out groupNumber) && groupNumber <= regex.GroupCount) {
  69                                                 m.appendReplacement (sb, @"\$" + regex.GetJavaNumberByNetNumber (groupNumber));
  70                                                 continue;
  71                                         }
  72
  73                                         m.appendReplacement (sb, JAVA_DOLLAR + "{" + m.group (1) + "}");
  74                                         continue;
  75                                 }
  76                                 if (m.start (2) >= 0) {
  77                                         int netGroupNumber = int.Parse (m.group (2));
  78                                         if (netGroupNumber > regex.GroupCount) {
  79                                                 m.appendReplacement (sb, JAVA_DOLLAR + netGroupNumber);
  80                                                 continue;
  81                                         }
  82
  83                                         m.appendReplacement (sb, @"\$" + regex.GetJavaNumberByNetNumber (netGroupNumber));
  84                                         continue;
  85                                 }
  86
  87                                 m.appendReplacement (sb, JAVA_DOLLAR);
  88                         }
  89
  90                         m.appendTail (sb);
  91
  92                         return sb.ToString ();
  93                 }
  94
  95                 internal static void ReplaceMatch (string replacementPattern, Matcher match, StringBuffer sb, string input, PatternData patternData) {
  96
  97                         replacementPattern = JavaUtils.ReplaceAll (replacementPattern, COPY_ENTIRE_MATCH_PATTERN, match.group ());
  98                         replacementPattern = JavaUtils.ReplaceAll (replacementPattern, INPUT_BEFORE_MATCH_PATTERN, input.Substring (0, match.start ()));
  99                         replacementPattern = JavaUtils.ReplaceAll (replacementPattern, INPUT_AFTER_MATCH_PATTERN, input.Substring (match.end ()));
 100                         replacementPattern = JavaUtils.ReplaceAll (replacementPattern, INPUT_PATTERN, input);
 101
 102                         int groupsNumber = match.groupCount ();
 103                         if (groupsNumber > 0) {
 104                                 Pattern p = Pattern.compile (LAST_CAPTURED_GROUP_PATTERN);
 105                                 Matcher m = p.matcher ((CharSequence) (object) replacementPattern);
 106                                 if (m.find ()) {
 107                                         while (groupsNumber > 0) {
 108                                                 if (match.start (patternData.NetToJavaNumbersMap [groupsNumber]) >= 0) {
 109                                                         break;
 110                                                 }
 111                                                 --groupsNumber;
 112                                         }
 113                                         if (groupsNumber > 0) {
 114                                                 replacementPattern = m.replaceAll (match.group (patternData.NetToJavaNumbersMap [groupsNumber]));
 115                                         }
 116                                 }
 117                         }
 118
 119                         match.appendReplacement (sb, replacementPattern);
 120                 }
 121         }
 122 }