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c9d8400936
git-svn-id: https://zxing.googlecode.com/svn/trunk@1872 59b500cc-1b3d-0410-9834-0bbf25fbcc57
113 lines
3.3 KiB
Objective-C
113 lines
3.3 KiB
Objective-C
//
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// ResultParser.m
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// ZXing
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//
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// Created by Christian Brunschen on 25/06/2008.
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/*
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* Copyright 2008 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "ResultParser.h"
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#import "TextResultParser.h"
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@interface ResultParser(Private)
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+ (NSString *)urlDecode:(NSString *)str;
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@end
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@implementation ResultParser
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static NSMutableSet *sResultParsers = nil;
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+ (void)registerResultParserClass:(Class)resultParser {
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NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
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@synchronized(self) {
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if (!sResultParsers) {
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sResultParsers = [[NSMutableSet alloc] init];
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}
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[sResultParsers addObject:resultParser];
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}
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[pool drain];
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}
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+ (NSSet *)resultParsers {
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NSSet *resultParsers = nil;
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@synchronized(self) {
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resultParsers = [[sResultParsers copy] autorelease];
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}
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return resultParsers;
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}
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+ (ParsedResult *)parsedResultForString:(NSString *)s
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format:(BarcodeFormat)barcodeFormat {
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#ifdef DEBUG
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NSLog(@"parsing result:\n<<<\n%@\n>>>\n", s);
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#endif
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for (Class c in [self resultParsers]) {
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#ifdef DEBUG
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NSLog(@"trying %@", NSStringFromClass(c));
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#endif
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ParsedResult *result = [c parsedResultForString:s format:barcodeFormat];
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if (result != nil) {
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#ifdef DEBUG
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NSLog(@"parsed as %@ %@", NSStringFromClass([result class]), result);
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#endif
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return result;
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}
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}
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#ifdef DEBUG
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NSLog(@"No result parsers matched. Falling back to text.");
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#endif
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return [TextResultParser parsedResultForString:s format:barcodeFormat];
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}
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+ (ParsedResult *)parsedResultForString:(NSString *)s {
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return [ResultParser parsedResultForString:s format:BarcodeFormat_None];
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}
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+ (NSDictionary*)dictionaryForQueryString:(NSString *)queryString {
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NSMutableDictionary *result = [NSMutableDictionary dictionary];
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NSArray *keyValuePairs = [queryString componentsSeparatedByString:@"&"];
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for (NSString *kvp in keyValuePairs) {
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NSRange equals = [kvp rangeOfString:@"="];
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if (equals.location != NSNotFound) {
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NSString *key =
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[kvp substringWithRange:NSMakeRange(0, equals.location)];
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NSUInteger i = equals.location + 1;
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NSString *value =
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[kvp substringWithRange:NSMakeRange(i, [kvp length] - i)];
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[result setObject:[self urlDecode:value]
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forKey:[self urlDecode:key]];
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}
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}
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return result;
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}
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@end
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@implementation ResultParser(Private)
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+ (NSString *)urlDecode:(NSString *)str {
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// Obj-C's url decoder does everything except + to space conversion.
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NSString *result = [str stringByReplacingOccurrencesOfString:@"+"
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withString:@" "];
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return [result stringByReplacingPercentEscapesUsingEncoding:
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NSUTF8StringEncoding];
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}
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@end
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