zxing/iphone/Classes/SMSResultParser.m
2008-08-01 13:04:23 +00:00

75 lines
2.8 KiB
Objective-C

//
// SMSResultParser.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 "SMSResultParser.h"
#import "SMSParsedResult.h"
#define PREFIX @"sms:"
@implementation SMSResultParser
+ (ParsedResult *)parsedResultForString:(NSString *)s {
NSRange prefixRange = [s rangeOfString:PREFIX options:NSCaseInsensitiveSearch];
if (prefixRange.location == 0) {
int max = [s length];
int restStart = prefixRange.location + prefixRange.length;
// initial presuption: everything after the prefix is the number, and there is no body
NSRange numberRange = NSMakeRange(restStart, max - restStart);
NSRange bodyRange = NSMakeRange(NSNotFound, 0);
// is there a query string?
NSRange queryRange = [s rangeOfString:@"?" options:0 range:numberRange];
if (queryRange.location != NSNotFound) {
// truncate the number range at the beginning of the query string
numberRange.length = queryRange.location - numberRange.location;
int paramsStart = queryRange.location + queryRange.length;
NSRange paramsRange = NSMakeRange(paramsStart, max - paramsStart);
NSRange bodyPrefixRange = [s rangeOfString:@"body=" options:0 range:paramsRange];
if (bodyPrefixRange.location != NSNotFound) {
int bodyStart = bodyPrefixRange.location + bodyPrefixRange.length;
bodyRange = NSMakeRange(bodyStart, max - bodyStart);
NSRange ampRange = [s rangeOfString:@"&" options:0 range:bodyRange];
if (ampRange.location != NSNotFound) {
// we found a '&', so we truncate the body range there
bodyRange.length = ampRange.location - bodyRange.location;
}
}
}
// if there's a semicolon in the number, truncate the number there
NSRange semicolonRange = [s rangeOfString:@";" options:0 range:numberRange];
if (semicolonRange.location != NSNotFound) {
numberRange.length = semicolonRange.location - numberRange.location;
}
NSString *number = [s substringWithRange:numberRange];
NSString *body = bodyRange.location != NSNotFound ? [s substringWithRange:bodyRange] : nil;
return [[[SMSParsedResult alloc] initWithNumber:number body:body]
autorelease];
}
return nil;
}
@end