/*
     File: CAFilePathUtils.cpp
 Abstract: CAFilePathUtils.h
  Version: 1.1

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*/
#include "CAFilePathUtils.h"
#include <string.h>

#if !CA_NO_CORE_SERVICES
#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
	#include <CoreServices/CoreServices.h> // FSRef
    #include <CoreAudio/CoreAudioTypes.h>
#else
	#include <CoreServices.h>
	#include <CoreAudioTypes.h>
#endif

OSStatus	PosixPathToParentFSRefAndName(const char *path, FSRef &outParentDir, CFStringRef &outFileName)
{
	// convert C string to CFString
#if !TARGET_OS_WIN32
	CFStringRef cfFullPath = CFStringCreateWithCString(NULL, path, kCFStringEncodingUTF8);
#else
	CFStringRef cfFullPath = CFStringCreateWithCString(NULL, path, kCFStringEncodingWindowsLatin1);
#endif
	// convert CF string to URL
	CFURLRef fullurl = CFURLCreateWithFileSystemPath(NULL, cfFullPath, TARGET_OS_WIN32 ? kCFURLWindowsPathStyle : kCFURLPOSIXPathStyle, false);
	CFRelease(cfFullPath);
	// get the directory portion of the URL
	CFURLRef dirurl = CFURLCreateCopyDeletingLastPathComponent(NULL, fullurl);
	// get the directory's FSRef
	OSStatus err = CFURLGetFSRef(dirurl, &outParentDir) ? OSStatus(noErr) : OSStatus(kAudio_FileNotFoundError);
	CFRelease(dirurl);

	CFStringRef lastPathComponent = CFURLCopyLastPathComponent(fullurl);
	CFRelease(fullurl);
	CFMutableStringRef filename = CFStringCreateMutableCopy(NULL, 0, lastPathComponent);
	CFRelease(lastPathComponent);
	// convert colons (legal in POSIX paths, illegal in File Manager) to slashes
	CFStringFindAndReplace(filename, CFSTR(":"), CFSTR("/"), CFRangeMake(0, CFStringGetLength(filename)), 0);

	outFileName = filename;

	return err;
}
#endif // !CA_NO_CORE_SERVICES


#if TARGET_OS_WIN32

char*	dirname(const char* inPath)
{
	static char sAnswer[1024];

	char* theAnswer = NULL;
	SInt32 thePathLength = strlen(inPath);
	if(thePathLength < 1023)
	{
		//	make a working copy
		strlcpy(sAnswer, inPath, sizeof(sAnswer));

		//	start at the end of the string
		SInt32 theIndex = thePathLength - 1;

		//	walk back over the '\' characters
		while((theIndex > 0) && (sAnswer[theIndex] == '\\'))
		{
			--theIndex;
		}

		//	now keep walking back until we get to a '\'
		while((theIndex > 0) && (sAnswer[theIndex] != '\\'))
		{
			--theIndex;
		}

		//	where we are now is either the first character of the path or the '\' that marks the end of the directory name
		if(theIndex > 0)
		{
			//	we have a name so put a '\0' in place of the '\'
			sAnswer[theIndex] = 0;
		}
		else
		{
			//	no name, so the answer is "."
			sAnswer[0] = '.';
			sAnswer[1] = 0;
		}

		//	set the return value
		theAnswer = sAnswer;
	}

	return theAnswer;
}

char*	basename(const char* inPath)
{
	static char sAnswer[1024];

	char* theAnswer = NULL;
	SInt32 thePathLength = strlen(inPath);
	if(thePathLength < 1023)
	{
		//	make a working copy
		strlcpy(sAnswer, inPath, sizeof(sAnswer));

		//	start at the end of the string
		SInt32 theLastIndex = thePathLength - 1;

		//	walk back over the '\' characters
		while((theLastIndex > 0) && (sAnswer[theLastIndex] == '\\'))
		{
			--theLastIndex;
		}

		//	check to see if we're at the beginning now
		if(theLastIndex > 0)
		{
			//	there's a name in there now, so start where we are and go back to the next '\'
			UInt32 theFirstIndex = theLastIndex;
			while((theFirstIndex > 0) && (sAnswer[theFirstIndex] != '\\'))
			{
				--theFirstIndex;
			}

			//	we now have a string, so put a '\0' after the last character
			sAnswer[theLastIndex + 1] = 0;

			//	and set the return value
			theAnswer = &sAnswer[theFirstIndex];
		}
		else
		{
			//	the path was entirely '\' characters, so the return value is "\"
			sAnswer[0] = '\\';
			sAnswer[1] = 0;

			//	set the return value
			theAnswer = sAnswer;
		}
	}

	return theAnswer;
}

#endif
