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pelish8/gist:ed8ed7d23e34b5d2ba40

Created January 7, 2015 18:19
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Revisions

  1. pelish8 created this gist Jan 7, 2015.
    17 changes: 17 additions & 0 deletions gistfile1.m
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,17 @@
    + (NSString *)contentTypeForImageData:(NSData *)data {
    uint8_t c;
    [data getBytes:&c length:1];

    switch (c) {
    case 0xFF:
    return @"image/jpeg";
    case 0x89:
    return @"image/png";
    case 0x47:
    return @"image/gif";
    case 0x49:
    case 0x4D:
    return @"image/tiff";
    }
    return nil;
    }