ceph/src/rgw/rgw_string.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #include "rgw_string.h"
   5
   6 static bool char_eq(char c1, char c2)
   7 {
   8   return c1 == c2;
   9 }
  10
  11 static bool ci_char_eq(char c1, char c2)
  12 {
  13   return tolower(c1) == tolower(c2);
  14 }
  15
  16 bool match_wildcards(boost::string_view pattern, boost::string_view input,
  17                      uint32_t flags)
  18 {
  19   const auto eq = (flags & MATCH_CASE_INSENSITIVE) ? &ci_char_eq : &char_eq;
  20
  21   auto it1 = pattern.begin();
  22   auto it2 = input.begin();
  23   while (true) {
  24     if (it1 == pattern.end())
  25       return it2 == input.end();
  26     if (*it1 == '*') {
  27       if (it1 + 1 == pattern.end())
  28         return true;
  29       if (it2 == input.end() || eq(*(it1 + 1), *it2))
  30         ++it1;
  31       else
  32         ++it2;
  33       continue;
  34     }
  35     if (it2 == input.end())
  36       return false;
  37     if (*it1 == '?' || eq(*it1, *it2)) {
  38       ++it1;
  39       ++it2;
  40       continue;
  41     }
  42     return false;
  43   }
  44   return false;
  45 }