external/bsd/atf/dist/tools/expand.cpp

   1 //
   2 // Automated Testing Framework (atf)
   3 //
   4 // Copyright (c) 2007 The NetBSD Foundation, Inc.
   5 // All rights reserved.
   6 //
   7 // Redistribution and use in source and binary forms, with or without
   8 // modification, are permitted provided that the following conditions
   9 // are met:
  10 // 1. Redistributions of source code must retain the above copyright
  11 //    notice, this list of conditions and the following disclaimer.
  12 // 2. Redistributions in binary form must reproduce the above copyright
  13 //    notice, this list of conditions and the following disclaimer in the
  14 //    documentation and/or other materials provided with the distribution.
  15 //
  16 // THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  17 // CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  18 // INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  19 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20 // IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
  21 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23 // GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25 // IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  27 // IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28 //
  29
  30 #include <stdexcept>
  31
  32 #include "expand.hpp"
  33 #include "text.hpp"
  34
  35 namespace impl = tools::expand;
  36 #define IMPL_NAME "tools::expand"
  37
  38 // ------------------------------------------------------------------------
  39 // Auxiliary functions.
  40 // ------------------------------------------------------------------------
  41
  42 namespace {
  43
  44 std::string
  45 glob_to_regex(const std::string& glob)
  46 {
  47     std::string regex;
  48     regex.reserve(glob.length() * 2);
  49
  50     regex += '^';
  51     for (std::string::const_iterator iter = glob.begin(); iter != glob.end();
  52          iter++) {
  53         switch (*iter) {
  54         case '*': regex += ".*"; break;
  55         case '?': regex += "."; break;
  56         default: regex += *iter;
  57         }
  58     }
  59     regex += '$';
  60
  61     return regex;
  62 }
  63
  64 } // anonymous namespace
  65
  66 // ------------------------------------------------------------------------
  67 // Free functions.
  68 // ------------------------------------------------------------------------
  69
  70 bool
  71 impl::is_glob(const std::string& glob)
  72 {
  73     // NOTE: Keep this in sync with glob_to_regex!
  74     return glob.find_first_of("*?") != std::string::npos;
  75 }
  76
  77 bool
  78 impl::matches_glob(const std::string& glob, const std::string& candidate)
  79 {
  80     return tools::text::match(candidate, glob_to_regex(glob));
  81 }