检索具有读取属性的文件并对其进行分类

Question

我从其他地方获得了这个代码并进行了一些编辑，允许使用enumeratorAtPath指定的起始路径遍历所有目录。使用此代码，我可以使用isReadableFileAtPath检索具有读取属性的特定扩展名的文件。我想要的是检索具有读取属性的任何扩展名的所有文件，并根据它们的最后文件夹名称将它们分类到不同的类别。
例如，如果我有一个路径/a/b/c/example.plist,/a/b/c/example.plist将被归类为c。

- (NSString *) retrievePaths
{
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSMutableString *filePaths = [[NSMutableString alloc] init];
    NSDirectoryEnumerator *dirnum = [[NSFileManager defaultManager] enumeratorAtPath:@"/"];
    NSString *nextItem = [NSString string];
    int i = 0;
    while( (nextItem = [dirnum nextObject]))
          {
              if([[nextItem pathExtension] isEqualToString:@"db"] || [[nextItem pathExtension] isEqualToString:@"sqlitedb"] || [[nextItem pathExtension] isEqualToString:@"sqlite"]) {
                  if([fileManager isReadableFileAtPath:nextItem])
                  {
                      i++;
                      [filePaths appendFormat:@"%d)",i];
                      [filePaths appendString:nextItem];
                      [filePaths appendString:@"\n"];
                  }
              }
          }
    NSString *format = [NSString stringWithFormat:@"Paths : %@", filePaths];
    return format;
}

Answer 1

从代码中移除以下if条件，您将能够获得具有可读访问权限的所有文件

if([[nextItem pathExtension] isEqualToString:@"db"] || [[nextItem pathExtension] isEqualToString:@"sqlitedb"] || [[nextItem pathExtension] isEqualToString:@"sqlite"]) 

修改

更新的功能试试这个，对你有用..

- (NSString *) retrievePaths
{
    NSFileManager *fileManager = [NSFileManager defaultManager];
NSMutableString *filePaths = [[NSMutableString alloc] init];
NSString *path = @"/Assign/your/path/"; // assign your path 
NSDirectoryEnumerator *dirnum = [[NSFileManager defaultManager] enumeratorAtPath:path];
NSString *nextItem = [NSString string];
int i = 0;
while( (nextItem = [dirnum nextObject]))
{
    NSString *filePath = [path stringByAppendingPathComponent:nextItem];
    BOOL isDir = NO;
    [[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:&isDir];
    if(NO == isDir) {
        if([fileManager isReadableFileAtPath:filePath])
        {
            i++;
            [filePaths appendFormat:@"%d)",i];
            [filePaths appendString:nextItem];
            [filePaths appendString:@"\n"];
        }
    }
}
NSString *format = [NSString stringWithFormat:@"Paths : %@", filePaths];
return format;
}