mirror of
https://github.com/hholtmann/smcFanControl.git
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129 lines
4.1 KiB
Objective-C
129 lines
4.1 KiB
Objective-C
//
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// NSFileManager+DirectoryLocations.m
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//
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// Created by Matt Gallagher on 06 May 2010
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software. Permission is granted to anyone to
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// use this software for any purpose, including commercial applications, and to
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// alter it and redistribute it freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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#import "NSFileManager+DirectoryLocations.h"
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enum
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{
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DirectoryLocationErrorNoPathFound,
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DirectoryLocationErrorFileExistsAtLocation
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};
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NSString * const DirectoryLocationDomain = @"DirectoryLocationDomain";
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@implementation NSFileManager (DirectoryLocations)
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/*! Method to tie together the steps of:
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1) Locate a standard directory by search path and domain mask
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2) Select the first path in the results
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3) Append a subdirectory to that path
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4) Create the directory and intermediate directories if needed
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5) Handle errors by emitting a proper NSError object
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* \pararm searchPathDirectory - the search path passed to NSSearchPathForDirectoriesInDomains
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* \pararm domainMask - the domain mask passed to NSSearchPathForDirectoriesInDomains
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* \pararm appendComponent - the subdirectory appended
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* \pararm errorOut - any error from file operations
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* \returns returns the path to the directory (if path found and exists), nil otherwise
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*/
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- (NSString *)findOrCreateDirectory:(NSSearchPathDirectory)searchPathDirectory
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inDomain:(NSSearchPathDomainMask)domainMask
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appendPathComponent:(NSString *)appendComponent
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error:(NSError **)errorOut
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{
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// Declare an NSError first, so we don't need to check errorOut again and again
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NSError *error;
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if (errorOut) {
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error = *errorOut;
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}
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else {
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error = nil;
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}
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//
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// Search for the path
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//
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NSArray* paths = NSSearchPathForDirectoriesInDomains(searchPathDirectory,domainMask,YES);
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if ([paths count] == 0)
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{
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NSDictionary *userInfo = @{NSLocalizedDescriptionKey: NSLocalizedStringFromTable(@"No path found for directory in domain.",@"Errors",nil),
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@"NSSearchPathDirectory":@(searchPathDirectory),
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@"NSSearchPathDomainMask":@(domainMask)};
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error = [NSError errorWithDomain:DirectoryLocationDomain
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code:DirectoryLocationErrorNoPathFound
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userInfo:userInfo];
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return nil;
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}
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//
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// Normally only need the first path returned
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//
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NSString *resolvedPath = paths[0];
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//
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// Append the extra path component
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//
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if (appendComponent)
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{
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resolvedPath = [resolvedPath stringByAppendingPathComponent:appendComponent];
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}
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//
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// Create the path if it doesn't exist
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//
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if ([self createDirectoryAtPath:resolvedPath withIntermediateDirectories:YES
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attributes:nil error:&error])
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return resolvedPath;
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else
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return nil;
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}
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/*! applicationSupportDirectory
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* \returns The path to the applicationSupportDirectory (creating it if it doesn't exist).
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*/
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- (NSString *)applicationSupportDirectory
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{
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NSString *executableName = [[NSBundle mainBundle] infoDictionary][@"CFBundleExecutable"];
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NSError *error = nil;
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NSString *result = [self findOrCreateDirectory:NSApplicationSupportDirectory
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inDomain:NSUserDomainMask
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appendPathComponent:executableName
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error:&error];
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if (!result)
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{
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NSLog(@"Unable to find or create application support directory:\n%@", error);
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}
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return result;
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}
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@end
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