zxing/iphone/ZXingWidget/Classes/resultParsers/URLResultParser.m

81 lines
2.2 KiB
Objective-C

//
// URIResultParser.m
// ZXing
//
// Created by Christian Brunschen on 25/06/2008.
/*
* Copyright 2008 ZXing authors
*
* 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 "URLResultParser.h"
#import "URIParsedResult.h"
@implementation NSString (ZXingURLExtensions)
- (bool)looksLikeAURI {
if ([self rangeOfCharacterFromSet:[NSCharacterSet whitespaceCharacterSet]].location != NSNotFound) {
return false;
}
if ([self rangeOfString:@":"].location == NSNotFound) {
return false;
}
return true;
}
- (NSString *)massagedURLString {
NSRange colonRange = [self rangeOfString:@":"];
if (colonRange.location == NSNotFound) {
return [NSString stringWithFormat:@"http://%@", self];
} else {
return [NSString stringWithFormat:@"%@%@",
[[self substringToIndex:colonRange.location] lowercaseString],
[self substringFromIndex:colonRange.location]
];
}
}
@end
#define PREFIX @"URL:"
@implementation URLResultParser
+ (void)load {
[ResultParser registerResultParserClass:self];
}
+ (ParsedResult *)parsedResultForString:(NSString *)s {
NSRange prefixRange = [s rangeOfString:PREFIX options:NSCaseInsensitiveSearch];
if (prefixRange.location == 0) {
int restStart = /*prefixRange.location + */ prefixRange.length;
return [[[URIParsedResult alloc] initWithURLString:[[s substringFromIndex:restStart] massagedURLString]]
autorelease];
}
if ([s looksLikeAURI]) {
NSString *massaged = [s massagedURLString];
NSURL *url = [NSURL URLWithString:massaged];
if (url != nil) {
return [[[URIParsedResult alloc] initWithURLString:massaged URL:url] autorelease];
}
}
return nil;
}
@end