1  // Copyright 2006 Google LLC
 2  //
 3  // Redistribution and use in source and binary forms, with or without
 4  // modification, are permitted provided that the following conditions are
 5  // met:
 6  //
 7  //     * 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
10  // copyright notice, this list of conditions and the following disclaimer
11  // in the documentation and/or other materials provided with the
12  // distribution.
13  //     * Neither the name of Google LLC nor the names of its
14  // contributors may be used to endorse or promote products derived from
15  // this software without specific prior written permission.
16  //
17  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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28  
29  #ifdef HAVE_CONFIG_H
30  #include <config.h>  // Must come first
31  #endif
32  
33  #include "common/scoped_ptr.h"
34  #include "common/mac/string_utilities.h"
35  
36  namespace MacStringUtils {
37  
38  using google_breakpad::scoped_array;
39  
40  std::string ConvertToString(CFStringRef str) {
41    CFIndex length = CFStringGetLength(str);
42    std::string result;
43  
44    if (!length)
45      return result;
46  
47    CFIndex maxUTF8Length =
48      CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8);
49    scoped_array<UInt8> buffer(new UInt8[maxUTF8Length + 1]);
50    CFIndex actualUTF8Length;
51    CFStringGetBytes(str, CFRangeMake(0, length), kCFStringEncodingUTF8, 0,
52                     false, buffer.get(), maxUTF8Length, &actualUTF8Length);
53    buffer[actualUTF8Length] = 0;
54    result.assign((const char*)buffer.get());
55  
56    return result;
57  }
58  
59  unsigned int IntegerValueAtIndex(string& str, unsigned int idx) {
60    string digits("0123456789"), temp;
61    size_t start = 0;
62    size_t end;
63    size_t found = 0;
64    unsigned int result = 0;
65  
66    for (; found <= idx; ++found) {
67      end = str.find_first_not_of(digits, start);
68  
69      if (end == string::npos)
70        end = str.size();
71  
72      temp = str.substr(start, end - start);
73  
74      if (found == idx) {
75        result = atoi(temp.c_str());
76      }
77  
78      start = str.find_first_of(digits, end + 1);
79  
80      if (start == string::npos)
81        break;
82    }
83  
84    return result;
85  }
86  
87  }  // namespace MacStringUtils