Error Json : "NSDebugDescription Garbage at end" (iOS)

Question

hello,

Even if I did research, I found nothing who can help me in my situation.

So, I try to parse Json created by a php script on xcode but I have an error which blocks the process.

I'm new so I triedto do the best for the layout of my question...

My error :

[376:70b] Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (Garbage at end.) UserInfo=0x8bc0f70 {NSDebugDescription=Garbage at end.

My code :

NSData *jsonSource = [NSData dataWithContentsOfURL:
                          [NSURL URLWithString:@"http://codlobbyz.com/app/service.php"]];
    NSError *err;
    id jsonObjects = [NSJSONSerialization JSONObjectWithData:
                      jsonSource options:NSJSONReadingMutableContainers error:&err];
    NSLog(@"%@", err);

My json :

[{"nom":"Call of duty ghost","date":"22 novembre","image":"appicon.png"},{"nom":"Fifa 14","date":"22 novembre","image":"appicon.png"}]

I hope you will help me, thank you for your answers.

Solution

The PHP script is returning JSON, but also a snippet of HTML that follows it:

[{"nom":"Call of duty ghost","date":"22 novembre","image":"appicon.png"},{"nom":"Fifa 14","date":"22 novembre","image":"appicon.png"}] 
<!-- Hosting24 Analytics Code -->
<script type="text/javascript" src="http://stats.hosting24.com/count.php"></script>
<!-- End Of Analytics Code -->

You can see this by using curl from the command line:

curl http://codlobbyz.com/app/service.php

Or by loading it in a browser and viewing the source.

If you have control over the PHP script, remove the analytics code. Otherwise, you could use a regex to remove the non-JSON part of the response before parsing it.

EDIT: To remote the non-JSON with regex, something like this would work:

NSString *json = @"[{\"nom\":\"Call of duty ghost\",\"date\":\"22 novembre\",\"image\":\"appicon.png\"},{\"nom\":\"Fifa 14\",\"date\":\"22 novembre\",\"image\":\"appicon.png\"}]\n<!-- Hosting24 Analytics Code -->\n<script type=\"text/javascript\" src=\"http://stats.hosting24.com/count.php\"></script>\n<!-- End Of Analytics Code -->";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"\\s+<!--.*$"
                                                                       options:NSRegularExpressionDotMatchesLineSeparators
                                                                         error:nil];
NSTextCheckingResult *result = [regex firstMatchInString:json
                                                 options:0
                                                   range:NSMakeRange(0, json.length)];
if(result) {
    NSRange range = [result rangeAtIndex:0];
    json = [json stringByReplacingCharactersInRange:range withString:@""];
    NSLog(@"json: %@", json);
}