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73 lines
2.3 KiB
Objective-C
73 lines
2.3 KiB
Objective-C
//
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// StringHelper.m
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// IOSBoilerplate
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//
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// Copyright (c) 2011 Alberto Gimeno Brieba
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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#import "StringHelper.h"
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@implementation NSString (helper)
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- (NSString*)substringFrom:(NSInteger)a to:(NSInteger)b {
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NSRange r;
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r.location = a;
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r.length = b - a;
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return [self substringWithRange:r];
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}
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- (NSInteger)indexOf:(NSString*)substring from:(NSInteger)starts {
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NSRange r;
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r.location = starts;
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r.length = [self length] - r.location;
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NSRange index = [self rangeOfString:substring options:NSLiteralSearch range:r];
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if (index.location == NSNotFound) {
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return -1;
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}
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return index.location + index.length;
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}
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- (NSString*)trim {
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return [self stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
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}
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- (BOOL)startsWith:(NSString*)s {
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if([self length] < [s length]) return NO;
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return [s isEqualToString:[self substringFrom:0 to:[s length]]];
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}
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- (BOOL)containsString:(NSString *)aString
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{
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NSRange range = [[self lowercaseString] rangeOfString:[aString lowercaseString]];
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return range.location != NSNotFound;
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}
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- (NSString *)urlEncode
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{
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NSString *encodedString = [self stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
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return encodedString;
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}
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@end
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