/thirdparty/breakpad/common/mac/string_utilities.cc

 1// Copyright (c) 2006, Google Inc.
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29
30#include "processor/scoped_ptr.h"
31#include "common/mac/string_utilities.h"
32
33namespace MacStringUtils {
34
35using google_breakpad::scoped_array;
36
37std::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
56unsigned 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