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1 | office | 1 | /* |
2 | * RegexpCmd.java -- |
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3 | * |
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4 | * This file contains the Jacl implementation of the built-in Tcl |
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5 | * "regexp" command. |
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6 | * |
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7 | * Copyright (c) 1997-1999 Sun Microsystems, Inc. |
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8 | * |
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9 | * See the file "license.terms" for information on usage and |
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10 | * redistribution of this file, and for a DISCLAIMER OF ALL |
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11 | * WARRANTIES. |
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12 | * |
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13 | * Included in SQLite3 port to C# for use in testharness only; 2008 Noah B Hart |
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14 | * |
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15 | * RCS @(#) $Id: RegexpCmd.java,v 1.3 2000/02/23 22:07:23 mo Exp $ |
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16 | */ |
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17 | using System; |
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18 | using Regexp = sunlabs.brazil.util.regexp.Regexp; |
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19 | namespace tcl.lang |
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20 | { |
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21 | |||
22 | /// <summary> This class implements the built-in "regexp" command in Tcl.</summary> |
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23 | |||
24 | class RegexpCmd : Command |
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25 | { |
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26 | |||
27 | private static readonly string[] validOpts = new string[] { "-indices", "-nocase", "--" }; |
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28 | private const int OPT_INDICES = 0; |
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29 | private const int OPT_NOCASE = 1; |
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30 | private const int OPT_LAST = 2; |
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31 | internal static void init( Interp interp ) |
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32 | // Current interpreter. |
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33 | { |
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34 | interp.createCommand( "regexp", new tcl.lang.RegexpCmd() ); |
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35 | interp.createCommand( "regsub", new tcl.lang.RegsubCmd() ); |
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36 | } |
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37 | public TCL.CompletionCode cmdProc( Interp interp, TclObject[] argv ) |
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38 | { |
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39 | bool nocase = false; |
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40 | bool indices = false; |
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41 | |||
42 | try |
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43 | { |
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44 | int i = 1; |
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45 | |||
46 | while ( argv[i].ToString().StartsWith( "-" ) ) |
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47 | { |
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48 | int index = TclIndex.get( interp, argv[i], validOpts, "switch", 0 ); |
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49 | i++; |
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50 | switch ( index ) |
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51 | { |
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52 | |||
53 | case OPT_INDICES: |
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54 | { |
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55 | indices = true; |
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56 | break; |
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57 | } |
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58 | |||
59 | case OPT_NOCASE: |
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60 | { |
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61 | nocase = true; |
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62 | break; |
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63 | } |
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64 | |||
65 | case OPT_LAST: |
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66 | { |
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67 | goto opts_brk; |
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68 | } |
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69 | } |
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70 | } |
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71 | |||
72 | opts_brk: |
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73 | ; |
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74 | |||
75 | |||
76 | TclObject exp = TclString.newInstance( argv[i++].ToString().Replace( "\\d", "[0-9]" ) ); |
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77 | |||
78 | string inString = argv[i++].ToString(); |
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79 | |||
80 | int matches = argv.Length - i; |
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81 | |||
82 | Regexp r = TclRegexp.compile( interp, exp, nocase ); |
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83 | |||
84 | int[] args = new int[matches * 2]; |
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85 | bool matched = r.match( inString, args ); |
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86 | if ( matched ) |
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87 | { |
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88 | for ( int match = 0; i < argv.Length; i++ ) |
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89 | { |
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90 | TclObject obj; |
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91 | |||
92 | int start = args[match++]; |
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93 | int end = args[match++]; |
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94 | if ( indices ) |
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95 | { |
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96 | if ( end >= 0 ) |
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97 | { |
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98 | end--; |
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99 | } |
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100 | obj = TclList.newInstance(); |
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101 | TclList.append( interp, obj, TclInteger.newInstance( start ) ); |
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102 | TclList.append( interp, obj, TclInteger.newInstance( end ) ); |
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103 | } |
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104 | else |
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105 | { |
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106 | string range = ( start >= 0 ) ? inString.Substring( start, ( end ) - ( start ) ) : ""; |
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107 | obj = TclString.newInstance( range ); |
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108 | } |
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109 | try |
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110 | { |
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111 | |||
112 | interp.setVar( argv[i].ToString(), obj, 0 ); |
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113 | } |
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114 | catch ( TclException e ) |
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115 | { |
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116 | |||
117 | throw new TclException( interp, "couldn't set variable \"" + argv[i] + "\"" ); |
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118 | } |
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119 | } |
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120 | } |
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121 | interp.setResult( matched ); |
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122 | } |
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123 | catch ( System.IndexOutOfRangeException e ) |
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124 | { |
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125 | throw new TclNumArgsException( interp, 1, argv, "?switches? exp string ?matchVar? ?subMatchVar subMatchVar ...?" ); |
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126 | } |
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127 | return TCL.CompletionCode.RETURN; |
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128 | } |
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129 | } // end RegexpCmd |
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130 | } |