objective-c - 使用 Cocoa-Touch 从文件路径创建树结构对象

Question

我有一个文档列表及其路径。

Unsigned/Corporate Tax Return/Testing.docx
Signed/Report/fieldsInfo.pdf
Unsigned/Corporate Tax Return/testSecure.pdf
Unsigned/Corporate Tax Return/2012/fileCatcher.pdf
Unsigned/Corporate Tax Return/2012/taxReturn.pdf

从这里我想要一个树结构的对象数组，所有这些对象都放在其中。我有两种对象类型：文档和文件

我将如何在目标 C 中执行此操作？

到目前为止我所拥有的：

- (void) createFolderStructure:(Document *) doc{
    Folder * root = [[Folder alloc]init];

    NSArray * folders = [doc.documentFilePath componentsSeparatedByString:@"/"];

    for(NSString * folderName in folders){
        if([root.folderSubFolders count] == 0){
            //root is empty , create folder
            Folder * newFolder = [[Folder alloc]init];
            newFolder.folderName = folderName;
            [root.folderSubFolders addObject:newFolder];
        } else {
            //root has subfolders
            for(Folder * folder in root.folderSubFolders){
                if ([folder.folderName isEqualToString:folderName]) {
                    //folder exists in subfolders

                } else {
                    //folder doesn't exist ,create folder
                    Folder * newFolder = [[Folder alloc]init];
                    newFolder.folderName = folderName;
                    [root.folderSubFolders addObject:newFolder];

                }
            }
        }
    }
}

Answer 1

你可以这样做：

NSString *str = @"Unsigned/Corporate Tax Return/2012/taxReturn.pdf";
NSArray *arr = [str componentsSeparatedByString:@"/"];

那么你有一个包含 NSStrings 的数组

0 - 未签名，1 - 公司纳税申报表...

当你这样做时：

id fileObj = [arr lastObject];

您将获得File对象，数组中的其余对象应该是Document对象。