On 2011-10-01 16:06:31 +0000, Johannes Pfau <[email protected]> said:
The freedesktop.org part is complete, the windows part will be added
soon (the public API won't change) and it seems there's no API on OSX to
get a MIME type for a file, so OSX will have to use the freedesktop.org
backend.
Mac OS X uses primarily Uniform Type Identifiers and maps all other
kinds of type identifiers (extensions, MIME, HFS+ type codes) to UTIs.
<http://developer.apple.com/library/mac/#documentation/FileManagement/Conceptual/understanding_utis/understand_utis_conc/understand_utis_conc.html#//apple_ref/doc/uid/TP40001319-CH202-CHDHIJDE>
If
you want to get the MIME type for a file, first get its UTI:
const char * path;
FSRef fileRef;
FSPathMakeRef(path, &fileRef, NULL);
CFStringRef uti = NULL;
LSCopyItemAttribute(&fileRef, kLSRolesAll, kLSItemContentType, &uti);
then ask for the preferred MIME type for this UTI:
CFStringRef mime = UTTypeCopyPreferredTagWithClass(uti,
kUTTagClassMIMEType);
You might want to create a C string from that:
size_t mime_c_str_length = CFStringLength(mime); // assuming ASCII here
char *mime_c_str = malloc(mime_c_str_length+1);
CFStringGetCString(mime, mime_c_str, mime_c_str_length+1,
kCFStringEncodingUTF8);
And once you're done, don't forget to release all those strings to avoid leaks:
CFRelease(uti);
CFRelease(mime);
free(mime_c_str);
--
Michel Fortin
[email protected]
http://michelf.com/
