iphone-common-codes-ccteam源代码 CCNSString.h

////  CCNSString.h//  CCFC_IPHONE////  Created by  xuchen(陈旭)， xichen(陈曦)， qq：511272827 on 10-11-15.//  Copyright 2010 cc_team. All rights reserved.//#ifndef CC_NSSTRING#define CC_NSSTRING#ifdef  __OBJC__#import <Foundation/Foundation.h>#define         PASCAL_STR                              %.*s#define         LONG_LONG_INT                   %lld#define         LONG_LONG_UINT                  %llu#define         UNICHAR                                 %C@interface NSString(cc)// 获取字符在字符串第一次出现的位置- (NSInteger)firstIndexOfChar:(unichar)ch;// 获取字符在字符串最后一次出现的位置- (NSInteger)lastIndexOfChar:(unichar)ch;// 获取字符在字符串第N次出现的位置, the appear count starts with 1.- (NSInteger)firstIndexOfChar:(unichar)ch withAppearCount:(NSInteger)count;// it won't modify the str, but returns another string that be trimmed.- (NSString *)returnTrimmed;// 根据字符串的字体大小获取字符串的像素长度- (CGFloat)getStrPixelLenByFontSize:(CGFloat)fontSize;// 根据字符串的字体大小获取字符串的像素高度- (CGFloat)getStrPixelHeightByFontSize:(CGFloat)fontSize;// 获取字符串中字符下标从前到后，总长度小于等于指定像素长度的最大下标的值- (NSInteger)getMaxIndexLessEqualToLen:(CGFloat)fontSize maxLen:(CGFloat)maxLen;// print each unichar   - (void)print;// returns the system library path of the indicate name- (NSString *)systemLibraryPath;// returns the empty string+ (NSString *)emptyString;// returns the text char count of the string, eg, SMS's character count- (int)calculateTextCharCount;// returns the trimmed string that be trimmed not only in the beginning and end, also in the middle of the string- (NSString *)returnTrimmedEntile;// returns whether it contains the str- (BOOL)containsStr:(NSString *)str;// returns whether the string is in strArr(whether the strArr contains at least one string that is equalToString self)- (BOOL)stringInArr:(NSArray *)strArr;@end@interface NSMutableString(cc)// 移除字符串首部、尾部、首部和尾部的空白字符（Unicode形式的空格，'\t', '\n'）- (void)trimBegin;- (void)trimEnd;- (void)trim;// same to trim func, but call system function- (void)trimByCallSystemFunc;@end#endif  //__OBJC__#endif  //CC_NSSTRING

可能有更新:

googlecode链接地址：http://code.google.com/p/iphone-common-codes-ccteam/source/browse/trunk/CCFC/files/CCNSString.h
github地址: https://github.com/cxsjabc/iphone-common-codes-ccteam/tree/master/CCFC/files/CCNSString.h