/core/externals/google-toolbox-for-mac/Foundation/GTMNSFileManager+Carbon.m
http://macfuse.googlecode.com/ · Objective C · 116 lines · 80 code · 17 blank · 19 comment · 6 complexity · b6960467ad845f45f97b3be1ba273e6d MD5 · raw file
- //
- // GTMNSFileManager+Carbon.m
- //
- // Copyright 2008 Google Inc.
- //
- // Licensed under the Apache License, Version 2.0 (the "License"); you may not
- // use this file except in compliance with the License. You may obtain a copy
- // of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- // License for the specific language governing permissions and limitations under
- // the License.
- //
- #import "GTMNSFileManager+Carbon.h"
- #import <CoreServices/CoreServices.h>
- #import <sys/param.h>
- #import "GTMDefines.h"
- @implementation NSFileManager (GTMFileManagerCarbonAdditions)
- - (NSData *)gtm_aliasDataForPath:(NSString *)path {
- NSData *data = nil;
- FSRef ref;
- AliasHandle alias = NULL;
- require_quiet([path length], CantUseParams);
- require_noerr(FSPathMakeRef((UInt8 *)[path fileSystemRepresentation],
- &ref, NULL), CantMakeRef);
- require_noerr(FSNewAlias(NULL, &ref, &alias), CantMakeAlias);
- Size length = GetAliasSize(alias);
- data = [NSData dataWithBytes:*alias length:length];
-
- DisposeHandle((Handle)alias);
- CantMakeAlias:
- CantMakeRef:
- CantUseParams:
- return data;
- }
- - (NSString *)gtm_pathFromAliasData:(NSData *)data {
- return [self gtm_pathFromAliasData:data resolve:YES withUI:YES];
- }
- - (NSString *)gtm_pathFromAliasData:(NSData *)data
- resolve:(BOOL)resolve
- withUI:(BOOL)withUI {
- NSString *path = nil;
- require_quiet(data, CantUseParams);
-
- AliasHandle alias;
- const void *bytes = [data bytes];
- NSUInteger length = [data length];
- require_noerr(PtrToHand(bytes, (Handle *)&alias, length), CantMakeHandle);
-
- FSRef ref;
- Boolean wasChanged;
- // we don't use a require here because it is quite legitimate for an alias
- // resolve to fail.
- if (resolve) {
- OSStatus err
- = FSResolveAliasWithMountFlags(NULL, alias, &ref, &wasChanged,
- withUI ? kResolveAliasFileNoUI : 0);
- if (err == noErr) {
- path = [self gtm_pathFromFSRef:&ref];
- }
- } else {
- OSStatus err
- = FSCopyAliasInfo(alias, NULL, NULL, (CFStringRef *)(&path), NULL, NULL);
- if (err != noErr) path = nil;
- GTMCFAutorelease(path);
- }
- DisposeHandle((Handle)alias);
- CantMakeHandle:
- CantUseParams:
- return path;
- }
- - (FSRef *)gtm_FSRefForPath:(NSString *)path {
- FSRef* fsRef = NULL;
- require_quiet([path length], CantUseParams);
- NSMutableData *fsRefData = [NSMutableData dataWithLength:sizeof(FSRef)];
- require(fsRefData, CantAllocateFSRef);
- fsRef = (FSRef*)[fsRefData mutableBytes];
- Boolean isDir = FALSE;
- const UInt8 *filePath = (const UInt8 *)[path fileSystemRepresentation];
- require_noerr_action(FSPathMakeRef(filePath, fsRef, &isDir),
- CantMakeRef, fsRef = NULL);
- CantMakeRef:
- CantAllocateFSRef:
- CantUseParams:
- return fsRef;
- }
- - (NSString *)gtm_pathFromFSRef:(FSRef *)fsRef {
- NSString *nsPath = nil;
- require_quiet(fsRef, CantUseParams);
-
- char path[MAXPATHLEN];
- require_noerr(FSRefMakePath(fsRef, (UInt8 *)path, MAXPATHLEN), CantMakePath);
- nsPath = [self stringWithFileSystemRepresentation:path length:strlen(path)];
- nsPath = [nsPath stringByStandardizingPath];
-
- CantMakePath:
- CantUseParams:
- return nsPath;
- }
- @end