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ec506e27be
git-svn-id: https://zxing.googlecode.com/svn/trunk@1646 59b500cc-1b3d-0410-9834-0bbf25fbcc57
79 lines
2.1 KiB
Objective-C
79 lines
2.1 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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@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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#ifdef DEBUG
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NSLog(@"parsing result:\n<<<\n%@\n>>>\n", s);
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#endif
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// Make the parser of last resort the last parser we try.
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NSMutableArray *resultParsers =
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[NSMutableArray arrayWithArray:[[self resultParsers] allObjects]];
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NSUInteger textIndex =
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[resultParsers indexOfObject:NSClassFromString(@"TextResultParser")];
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if (NSNotFound != textIndex) {
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// If it is present, make sure it is last.
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[resultParsers exchangeObjectAtIndex:textIndex
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withObjectAtIndex:[resultParsers count] - 1];
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}
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for (Class c in 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];
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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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return nil;
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}
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@end
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