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      1 // Copyright (c) 2006, Google Inc.
      2 // All rights reserved.
      3 //
      4 // Redistribution and use in source and binary forms, with or without
      5 // modification, are permitted provided that the following conditions are
      6 // met:
      7 //
      8 //     * Redistributions of source code must retain the above copyright
      9 // notice, this list of conditions and the following disclaimer.
     10 //     * Redistributions in binary form must reproduce the above
     11 // copyright notice, this list of conditions and the following disclaimer
     12 // in the documentation and/or other materials provided with the
     13 // distribution.
     14 //     * Neither the name of Google Inc. nor the names of its
     15 // contributors may be used to endorse or promote products derived from
     16 // this software without specific prior written permission.
     17 //
     18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29 
     30 #include "common/scoped_ptr.h"
     31 #include "common/mac/string_utilities.h"
     32 
     33 namespace MacStringUtils {
     34 
     35 using google_breakpad::scoped_array;
     36 
     37 std::string ConvertToString(CFStringRef str) {
     38   CFIndex length = CFStringGetLength(str);
     39   std::string result;
     40 
     41   if (!length)
     42     return result;
     43 
     44   CFIndex maxUTF8Length =
     45     CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8);
     46   scoped_array<UInt8> buffer(new UInt8[maxUTF8Length + 1]);
     47   CFIndex actualUTF8Length;
     48   CFStringGetBytes(str, CFRangeMake(0, length), kCFStringEncodingUTF8, 0,
     49                    false, buffer.get(), maxUTF8Length, &actualUTF8Length);
     50   buffer[actualUTF8Length] = 0;
     51   result.assign((const char *)buffer.get());
     52 
     53   return result;
     54 }
     55 
     56 unsigned int IntegerValueAtIndex(string &str, unsigned int idx) {
     57   string digits("0123456789"), temp;
     58   size_t start = 0;
     59   size_t end;
     60   size_t found = 0;
     61   unsigned int result = 0;
     62 
     63   for (; found <= idx; ++found) {
     64     end = str.find_first_not_of(digits, start);
     65 
     66     if (end == string::npos)
     67       end = str.size();
     68 
     69     temp = str.substr(start, end - start);
     70 
     71     if (found == idx) {
     72       result = atoi(temp.c_str());
     73     }
     74 
     75     start = str.find_first_of(digits, end + 1);
     76 
     77     if (start == string::npos)
     78       break;
     79   }
     80 
     81   return result;
     82 }
     83 
     84 }  // namespace MacStringUtils
     85