How can I retrieve a file path for file of a specific file extension?

Question

I have unzipped a file and sent to my documents directory:

[SSZipArchive unzipFileAtPath:path toDestination:destinationPath];

In the unzipped file there will be 5 different types of files. I only want to know the path and file name for the file with an extension type of '.shp'.

I've tried the following:

NSString *filePath = [[NSBundle mainBundle] pathForResource:destinationPath ofType:@"shp"];

Afterwards, I would like to delete all the contents of the files in that folder.

Any ideas? Thanks in advance.

Please check my answer and let me know if it's what you're looking for — KrishnaCA, Feb 13 '17 at 06:28

ETech · Accepted Answer · 2017-02-13T07:21:31.433

First, get all directory files.

NSString *bundle = [[NSBundle mainBundle] bundlePath];
NSFileManager * aMan = [NSFileManager defaultManager];
NSArray * allFiles = [aMan contentsOfDirectoryAtPath: bundle];

Then it is possible to filter needed extension with one of following methods:

NSPredicate *filter = [NSPredicate predicateWithFormat:@"self ENDSWITH '.shp'"];
NSArray *filtered = [allFiles filteredArrayUsingPredicate:filter];

Next - delete files, looping filtered. But it looks not good for me.
So, I prefer this one:

NSError *error;
for (NSString * elem in allFiles) {
    if ([[elem pathExtension] isEqualToString:@"shp"])
        [aMan removeItemAtPath:[bundle stringByAppendingPathComponent:elem] error:&error];

Hope, it helps

score 0 · Answer 2 · answered Feb 13 '17 at 06:12

0

You can use NSFileManager to remove the files:

NSFileManager * fileManager = [[NSFileManager alloc]init];

[fileManager removeItemAtPath:@"your path" error:nil];

answered Feb 13 '17 at 06:12

aircraft

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Thanks! But I can't give this answer partial credit :p – butter_baby Feb 13 '17 at 06:13

score 0 · Answer 3 · answered Feb 13 '17 at 06:27

You can do it in the following way:

NSURL *baseURL = [NSURL URLWithString:destinationPath];
NSDirectoryEnumerator* filesEnumerator = [[NSFileManager defaultManager] enumeratorAtURL:baseURL includingPropertiesForKeys:@[] options:0 errorHandler:nil];

NSURL* fileURL;
while (fileURL = [filesEnumerator nextObject]) {
    NSString* file = [fileURL lastPathComponent];
    BOOL match = [file containsString:@".shp"];
    if (match) {
       [[NSFileManager defaultManager] removeItemAtURL:fileURL error:nil];
    }
}

Please let me know if it resolves the problem..

How can I retrieve a file path for file of a specific file extension?

3 Answers3