Re: Can't get file type code using [fileAttr valueForKey:NSFileHFSTypeCode]
On May 23, 2008, at 5:19 PM, Sean McBride wrote:
On 5/22/08 4:37 PM, Lynn Barton said:
From what I have read quickly since Sean McBride sent his comment,
UTIs are
not yet implemented to the point where I could get the UTI of every
file on
my computer.
Sure you can. Use LSCopyItemAttributes() with kLSItemContentType.
I've written a category on NSFileManager that, among other things,
will do this. Here's the relevant portion for you:
__
#import Foundation/Foundation.h
@interface NSFileManager (DSFileAdditions)
+ (NSString *)UTIForFile:(NSString *)path;
+ (NSString *)UTIForURL:(NSURL *)url;
@end
@implementation NSFileManager (DSFileAdditions)
+ (NSString *)UTIForFile:(NSString *)path
{
return [self UTIForURL:[NSURL fileURLWithPath:path]];
}
+ (NSString *)UTIForURL:(NSURL *)url
{
NSString *retval = nil;
FSRefPtr fileRef = NULL;
fileRef = calloc( 1, sizeof( FSRef ) );
if ( (fileRef != NULL) (url != nil) [url isFileURL]
(CFURLGetFSRef( (CFURLRef)url, fileRef ) == true) ) {
CFStringRef theUTI = NULL;
if ( LSCopyItemAttribute( fileRef, kLSRolesAll, kLSItemContentType,
(CFTypeRef *)theUTI ) == noErr ) {
retval = [[(NSString *)theUTI copy] autorelease];
CFRelease( theUTI );
}
}
if ( fileRef != NULL )
free( fileRef );
return retval;
}
__
I *think* this code should work fine under GC (for anyone using it),
but you should probably test it first as I haven't.
--
Darkshadow
(aka Michael Nickerson)
http://www.nightproductions.net
smime.p7s
Description: S/MIME cryptographic signature
___
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to [EMAIL PROTECTED]
Re: Can't get file type code using [fileAttr valueForKey:NSFileHFSTypeCode]
The replies to my original question are appreciated, but they do not answer the question. Once my NSFileManager object has found a file of interest, why can I get the modification date with the key NSFileModificationDate (using objectForKey or valueForKey doesn't matter) but I can't get the OSType code with the key NSFileHFSTypeCode. Each time I try to access this data I get a different result. I know that the file has a type code because I can access it with another program. From what I have read quickly since Sean McBride sent his comment, UTIs are not yet implemented to the point where I could get the UTI of every file on my computer. File attribute keys are found on page 48 of the pdf version of the document NSFileManager Class Reference. On 5/22/08 1:43 PM, Sean McBride [EMAIL PROTECTED] wrote: On 5/21/08 10:35 PM, Jens Alfke said: In general you're better off checking the filename extension. (I know. I used to be rabidly in favor of HFS types over extensions, but I gave up that fight years ago...) In general you're better off checking the UTI. http://developer.apple.com/macosx/uniformtypeidentifiers.html -- Sean McBride, B. Eng [EMAIL PROTECTED] Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Can't get file type code using [fileAttr valueForKey:NSFileHFSTypeCode]
On May 22, 2008, at 5:08 PM, Quincey Morris wrote: On May 22, 2008, at 16:37, Lynn Barton wrote: I can't get the OSType code with the key NSFileHFSTypeCode. Each time I try to access this data I get a different result Is it perhaps something to do with the fact that [fileAttributes objectForKey: NSFileHFSTypeCode] is documented to be a NSNumber object, so the actual type code would be [[fileAttributes objectForKey: NSFileHFSTypeCode] intValue]? Since it's documented as returning an unsigned long, I'd use - unsignedLongValue or -[NSDictionary fileHFSTypeCode] which returns an OSType directly. The OP also asked about converting this to a string, which you can do with NSFileTypeForHFSTypeCode() or UTCreateStringForOSType() if you're working with UTIs. Doing a Spotlight search for kMDItemContentType == public.plain-text might make more sense than iterating directories, unless you're only looking for files with a type code. -- adam ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Can't get file type code using [fileAttr valueForKey:NSFileHFSTypeCode]
I am trying to build a list of files found on my hard disk that pass a
certain filter (predicate). Mostly my code works, but I want to get the
modification date and the type code of each file. I am getting the date OK,
but not the type code, which should be ³TEXT² for text files and might be
³WBBN² for a Microsoft Word document. Here is part of the code of my
controller:
NSFileManager *defMgr = [NSFileManager defaultManager];
NSDirectoryEnumerator *dirEnum =
[defMgr enumeratorAtPath:placeToSearch];
while (file = [dirEnum nextObject]) {
fileAttr = [dirEnum fileAttributes];
hfsFileType = [fileAttr valueForKey:NSFileHFSTypeCode];
modDate = [fileAttr valueForKey:NSFileModificationDate];
Can anyone tell me what is wrong?
And by the way, how do I convert hfsFileType into a string? (Maybe I can
figure that one out myself from the documentation.)
Lynn
___
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to [EMAIL PROTECTED]
Re: Can't get file type code using [fileAttr valueForKey:NSFileHFSTypeCode]
On May 21, 2008, at 21:22, Lynn Barton wrote: hfsFileType = [fileAttr valueForKey:NSFileHFSTypeCode]; modDate = [fileAttr valueForKey:NSFileModificationDate]; Don't you mean: hfsFileType = [fileAttr objectForKey:NSFileHFSTypeCode]; modDate = [fileAttr objectForKey:NSFileModificationDate]; ? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Can't get file type code using [fileAttr valueForKey:NSFileHFSTypeCode]
On 21 May '08, at 9:22 PM, Lynn Barton wrote: I am getting the date OK, but not the type code, which should be “TEXT” for text files and might be “WBBN” for a Microsoft Word document. Most files don't have HFS type or creator codes anymore, because Cocoa apps don't usually set them. (Word probably does, because it's been around forever.) And downloaded files generally don't have them either unless they were encoded with StuffIt or MacBinary. In general you're better off checking the filename extension. (I know. I used to be rabidly in favor of HFS types over extensions, but I gave up that fight years ago...) —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
