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