cocoa path operation

1. Path operation
3. 1>.判断路径是否为文件夹：
4. NSArray *subpaths;
5. BOOL isDir;
6. NSArray *paths = NSSearchPathForDirectoriesInDomains
7.                      (NSLibraryDirectory, NSUserDomainMask, YES);
8. if ([paths count] == 1)
9. {
11.     NSFileManager *fileManager = [NSFileManager defaultManager];
12.     NSString *fontPath = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"Fonts"];
13.     if ([fileManager fileExistsAtPath:fontPath isDirectory:&isDir] && isDir)
14.     {
15.         subpaths = [fileManager subpathsAtPath:fontPath];
16.     }
17. }
19. 2>.枚举文件夹中的文件
20. NSString *file;
21. NSString *docsDir = [NSHomeDirectory() stringByAppendingPathComponent:  @"Documents"];
22. NSDirectoryEnumerator *dirEnum =[[NSFileManager defaultManager] enumeratorAtPath:docsDir];
24. while (file = [dirEnum nextObject])
25. {
26.     if ([[file pathExtension] isEqualToString: @"doc"])
27.     {
28.         [self scanDocument: [docsDir stringByAppendingPathComponent:file]];
29.     }
30. }

其他的方法可以参考 NSPathUtilities.h

FOUNDATION_EXPORT NSString *NSUserName(void);
FOUNDATION_EXPORT NSString *NSFullUserName(void);

FOUNDATION_EXPORT NSString *NSHomeDirectory(void);
FOUNDATION_EXPORT NSString *NSHomeDirectoryForUser(NSString *userName);

FOUNDATION_EXPORT NSString *NSTemporaryDirectory(void);

FOUNDATION_EXPORT NSString *NSOpenStepRootDirectory(void);