src/base/match.cc

   1 /*
   2  * Copyright (c) 2004-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Nathan Binkert
  29  */
  30
  31 #include "base/match.hh"
  32
  33 #include "base/str.hh"
  34
  35 using namespace std;
  36
  37 ObjectMatch::ObjectMatch()
  38 {
  39 }
  40
  41 ObjectMatch::ObjectMatch(const string &expr)
  42 {
  43     setExpression(expr);
  44 }
  45
  46 void
  47 ObjectMatch::setExpression(const string &expr)
  48 {
  49     tokens.resize(1);
  50     tokenize(tokens[0], expr, '.');
  51 }
  52
  53 void
  54 ObjectMatch::setExpression(const vector<string> &expr)
  55 {
  56     if (expr.empty()) {
  57         tokens.resize(0);
  58     } else {
  59         tokens.resize(expr.size());
  60         for (vector<string>::size_type i = 0; i < expr.size(); ++i)
  61             tokenize(tokens[i], expr[i], '.');
  62     }
  63 }
  64
  65 /**
  66  * @todo this should probably be changed to just use regular
  67  * expression code
  68  */
  69 bool
  70 ObjectMatch::domatch(const string &name) const
  71 {
  72     vector<string> name_tokens;
  73     tokenize(name_tokens, name, '.');
  74     int ntsize = name_tokens.size();
  75
  76     int num_expr = tokens.size();
  77     for (int i = 0; i < num_expr; ++i) {
  78         const vector<string> &token = tokens[i];
  79         int jstop = token.size();
  80
  81         bool match = true;
  82         for (int j = 0; j < jstop; ++j) {
  83             if (j >= ntsize)
  84                 break;
  85
  86             const string &var = token[j];
  87             if (var != "*" && var != name_tokens[j]) {
  88                 match = false;
  89                 break;
  90             }
  91         }
  92
  93         if (match)
  94             return true;
  95     }
  96
  97     return false;
  98 }
  99