13479163c8
- Add NSError ** parameter to -[NBRegularExpressionCache regularExpressionForPattern:error] method. - Consolidating the expansion of gzipped data into one method.
76 lines
2.8 KiB
Objective-C
76 lines
2.8 KiB
Objective-C
//
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// NBRegExMatcher.m
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// libPhoneNumber
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//
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// Created by Paween Itthipalkul on 11/29/17.
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// Copyright © 2017 Google LLC. All rights reserved.
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//
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#import "NBRegExMatcher.h"
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#import "NBPhoneNumberDesc.h"
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#import "NBRegularExpressionCache.h"
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#import "NBPhoneNumberUtil.h"
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// Expose this method to get a modified RegEx to cover the entire RegEx.
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// Though all RegEx methods and functionalities should be moved to either this class, or a separate
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// class rather than in NBPhoneNumberUtil.
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@interface NBPhoneNumberUtil()
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- (NSRegularExpression *)entireRegularExpressionWithPattern:(NSString *)regexPattern
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options:(NSRegularExpressionOptions)options
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error:(NSError **)error;
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@end
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@implementation NBRegExMatcher
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- (BOOL)matchNationalNumber:(NSString *)string
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phoneNumberDesc:(NBPhoneNumberDesc *)numberDesc
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allowsPrefixMatch:(BOOL)allowsPrefixMatch {
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NSString *nationalNumberPattern = numberDesc.nationalNumberPattern;
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// We don't want to consider it a prefix match when matching non-empty input against an empty
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// pattern.
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if (nationalNumberPattern.length == 0) {
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return NO;
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}
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NSRegularExpression *regEx =
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[[NBPhoneNumberUtil sharedInstance] entireRegularExpressionWithPattern:nationalNumberPattern
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options:kNilOptions
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error:nil];
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if (regEx == nil) {
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NSAssert(true, @"Regular expression shouldn't be nil");
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return NO;
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}
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NSRange wholeStringRange = NSMakeRange(0, string.length);
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// Prefix match (lookingAt()) search
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NSRegularExpression *prefixRegEx =
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[[NBRegularExpressionCache sharedInstance] regularExpressionForPattern:nationalNumberPattern
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error:NULL];
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if (prefixRegEx == nil) {
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NSAssert(true, @"Regular expression shouldn't be nil");
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return NO;
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}
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NSTextCheckingResult *prefixResult = [prefixRegEx firstMatchInString:string
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options:NSMatchingAnchored
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range:wholeStringRange];
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if (prefixResult.numberOfRanges <= 0) {
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// No prefix match found.
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return NO;
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} else {
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// Found prefix match, but need to see if exact match works as well.
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// Exact match (matches()) search.
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NSTextCheckingResult *exactResult = [regEx firstMatchInString:string
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options:NSMatchingAnchored
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range:wholeStringRange];
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return (allowsPrefixMatch || exactResult.numberOfRanges > 0);
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}
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}
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@end
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