Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_transform / lib / c++utils.cpp

diff --git a/Security/libsecurity_transform/lib/c++utils.cpp b/Security/libsecurity_transform/lib/c++utils.cpp
new file mode 100644 (file)
index 0000000..6bc113e
--- /dev/null
+++ b/Security/libsecurity_transform/lib/c++utils.cpp
@@ -0,0 +1,59 @@
+#include "c++utils.h"
+
+using namespace std;
+
+std::string StringFromCFString(CFStringRef theString)
+{
+       CFIndex maxLength = CFStringGetMaximumSizeForEncoding(CFStringGetLength(theString), 0);
+       
+       if (maxLength <= 0) // roll over?  just plain bad?
+       {
+               return "";
+       }
+       
+       // leave room for NULL termination
+       maxLength += 1;
+       
+       char* buffer = new char[maxLength];
+
+       if (buffer == NULL) // out of memory?  Naughty, naughty...
+       {
+               return "";
+       }
+       
+       CFStringGetCString(theString, buffer, maxLength, 0);
+       
+       string result(buffer);
+       delete buffer;
+       return result;
+}
+
+
+
+CFStringRef CFStringFromString(std::string theString)
+{
+       return CFStringCreateWithCString(NULL, theString.c_str(), 0);
+}
+
+
+
+CFTypeRefHolder::~CFTypeRefHolder()
+{
+       if (mTypeRef != NULL)
+       {
+               CFRelease(mTypeRef);
+       }
+}
+
+
+
+void CFTypeRefHolder::Set(CFTypeRef typeRef)
+{
+       if (mTypeRef != NULL)
+       {
+               CFRelease(mTypeRef);
+       }
+       
+       mTypeRef = typeRef;
+}
+