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

   1 #include "c++utils.h"
   2 #include "SecCFRelease.h"
   3
   4 using namespace std;
   5
   6 std::string StringFromCFString(CFStringRef theString)
   7 {
   8         CFIndex maxLength = CFStringGetMaximumSizeForEncoding(CFStringGetLength(theString), 0);
   9
  10         if (maxLength <= 0) // roll over?  just plain bad?
  11         {
  12                 return "";
  13         }
  14
  15         // leave room for NULL termination
  16         maxLength += 1;
  17
  18         char* buffer = new char[maxLength];
  19
  20         if (buffer == NULL) // out of memory?  Naughty, naughty...
  21         {
  22                 return "";
  23         }
  24
  25         CFStringGetCString(theString, buffer, maxLength, 0);
  26
  27         string result(buffer);
  28         delete[] buffer;
  29         return result;
  30 }
  31
  32
  33
  34 CFStringRef CFStringFromString(std::string theString)
  35 {
  36         return CFStringCreateWithCString(NULL, theString.c_str(), 0);
  37 }
  38
  39
  40
  41 CFTypeRefHolder::~CFTypeRefHolder()
  42 {
  43         if (mTypeRef != NULL)
  44         {
  45                 CFReleaseNull(mTypeRef);
  46         }
  47 }
  48
  49
  50
  51 void CFTypeRefHolder::Set(CFTypeRef typeRef)
  52 {
  53         if (mTypeRef != NULL)
  54         {
  55                 CFReleaseNull(mTypeRef);
  56         }
  57
  58         mTypeRef = typeRef;
  59 }
  60