ContentTypeUtilities.m

//
//  ContentTypeUtilities.m
//  OpenPhoto
//
//  Created by Patrick Santana on 29/03/12.
//  Copyright 2012 OpenPhoto
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
// 
//  http://www.apache.org/licenses/LICENSE-2.0
// 
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

#import "ContentTypeUtilities.h"

@implementation ContentTypeUtilities


+ (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;
}

+ (NSString *) contentTypeExtensionForImageData:(NSData *)data
{
    uint8_t c;
    [data getBytes:&c length:1];
    
    switch (c) {
        case 0xFF:
            return @"jpeg";
        case 0x89:
            return @"png";
        case 0x47:
            return @"gif";
        case 0x49:
        case 0x4D:
            return @"tiff";
    }
    return @"";    
}

@end