OSX/libsecurity_transform/lib/c++utils.cpp

   1 #include "c++utils.h"
   2
   3 using namespace std;
   4
   5 std::string StringFromCFString(CFStringRef theString)
   6 {
   7         CFIndex maxLength = CFStringGetMaximumSizeForEncoding(CFStringGetLength(theString), 0);
   8
   9         if (maxLength <= 0) // roll over?  just plain bad?
  10         {
  11                 return "";
  12         }
  13
  14         // leave room for NULL termination
  15         maxLength += 1;
  16
  17         char* buffer = new char[maxLength];
  18
  19         if (buffer == NULL) // out of memory?  Naughty, naughty...
  20         {
  21                 return "";
  22         }
  23
  24         CFStringGetCString(theString, buffer, maxLength, 0);
  25
  26         string result(buffer);
  27         delete[] buffer;
  28         return result;
  29 }
  30
  31
  32
  33 CFStringRef CFStringFromString(std::string theString)
  34 {
  35         return CFStringCreateWithCString(NULL, theString.c_str(), 0);
  36 }
  37
  38
  39
  40 CFTypeRefHolder::~CFTypeRefHolder()
  41 {
  42         if (mTypeRef != NULL)
  43         {
  44                 CFRelease(mTypeRef);
  45         }
  46 }
  47
  48
  49
  50 void CFTypeRefHolder::Set(CFTypeRef typeRef)
  51 {
  52         if (mTypeRef != NULL)
  53         {
  54                 CFRelease(mTypeRef);
  55         }
  56
  57         mTypeRef = typeRef;
  58 }
  59