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//
// GTMPath.m
//
// Copyright 2007-2008 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 "GTMPath.h"
#import "GTMDefines.h"
#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
// NSFileManager has improved substantially in Leopard and beyond, so GTMPath
// is now deprecated.
@implementation GTMPath
+ (id)pathWithFullPath:(NSString *)fullPath {
return [[[self alloc] initWithFullPath:fullPath] autorelease];
}
- (id)init {
return [self initWithFullPath:nil];
}
- (id)initWithFullPath:(NSString *)fullPath {
if ((self = [super init])) {
fullPath_ = [[fullPath stringByResolvingSymlinksInPath] copy];
if (![fullPath_ isAbsolutePath] || [self attributes] == nil) {
[self release];
return nil;
}
}
return self;
}
- (void)dealloc {
[fullPath_ release];
[super dealloc];
}
- (NSString *)description {
return [self fullPath];
}
- (NSString *)name {
return [fullPath_ lastPathComponent];
}
- (GTMPath *)parent {
if ([self isRoot]) return nil;
NSString *parentPath = [fullPath_ stringByDeletingLastPathComponent];
return [[self class] pathWithFullPath:parentPath];
}
- (BOOL)isDirectory {
BOOL isDir = NO;
BOOL exists = [[NSFileManager defaultManager]
fileExistsAtPath:fullPath_ isDirectory:&isDir];
return exists && isDir;
}
- (BOOL)isRoot {
return [fullPath_ isEqualToString:@"/"];
}
- (NSDictionary *)attributes {
NSFileManager *mgr = [NSFileManager defaultManager];
#if GTM_MACOS_SDK && (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5)
NSDictionary *attributes = [mgr fileAttributesAtPath:fullPath_
traverseLink:NO];
#else
NSDictionary *attributes = [mgr attributesOfItemAtPath:fullPath_
error:NULL];
#endif
return attributes;
}
- (NSString *)fullPath {
return [[fullPath_ copy] autorelease];
}
@end
@implementation GTMPath (GTMPathGeneration)
- (GTMPath *)createDirectoryName:(NSString *)name mode:(mode_t)mode {
NSDictionary *attributes =
[NSDictionary dictionaryWithObject:[NSNumber numberWithInt:mode]
forKey:NSFilePosixPermissions];
return [self createDirectoryName:name attributes:attributes];
}
- (GTMPath *)createDirectoryName:(NSString *)name
attributes:(NSDictionary *)attributes {
if ([name length] == 0) return nil;
// We first check to see if the requested directory alread exists by trying
// to create a GTMPath from the desired new path string. Only if the path
// doesn't already exist do we attempt to create it. If the path already
// exists, we will end up returning a GTMPath for the pre-existing path.
NSString *newPath = [fullPath_ stringByAppendingPathComponent:name];
GTMPath *nascentPath = [GTMPath pathWithFullPath:newPath];
if (nascentPath && ![nascentPath isDirectory]) {
return nil; // Return nil because the path exists, but it's not a dir
}
if (!nascentPath) {
NSFileManager *mgr = [NSFileManager defaultManager];
#if GTM_IPHONE_SDK || (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5)
NSError *error = nil;
BOOL created = [mgr createDirectoryAtPath:newPath
withIntermediateDirectories:YES
attributes:attributes
error:&error];
#else
BOOL created = [mgr createDirectoryAtPath:newPath attributes:attributes];
#endif // MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
nascentPath = created ? [GTMPath pathWithFullPath:newPath] : nil;
}
return nascentPath;
}
- (GTMPath *)createFileName:(NSString *)name mode:(mode_t)mode {
NSDictionary *attributes =
[NSDictionary dictionaryWithObject:[NSNumber numberWithInt:mode]
forKey:NSFilePosixPermissions];
return [self createFileName:name attributes:attributes];
}
- (GTMPath *)createFileName:(NSString *)name
attributes:(NSDictionary *)attributes {
return [self createFileName:name attributes:attributes data:[NSData data]];
}
- (GTMPath *)createFileName:(NSString *)name
attributes:(NSDictionary *)attributes
data:(NSData *)data {
if ([name length] == 0) return nil;
// See createDirectoryName:attribute: for some high-level notes about what and
// why this method does what it does.
NSString *newPath = [fullPath_ stringByAppendingPathComponent:name];
GTMPath *nascentPath = [GTMPath pathWithFullPath:newPath];
if (nascentPath != nil && [nascentPath isDirectory]) {
return nil; // Return nil because the path exists, but it's a dir
}
if (nascentPath == nil) {
BOOL created = [[NSFileManager defaultManager]
createFileAtPath:newPath
contents:data
attributes:attributes];
nascentPath = created ? [GTMPath pathWithFullPath:newPath] : nil;
}
return nascentPath;
}
@end
#endif // MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
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