editors/scapp/SMLAdvancedFind/ICU/NSStringICUAdditions.m

   1 //
   2 //  NSStringICUAdditions.m
   3 //  CocoaICU
   4 //
   5 //  Created by Aaron Evans on 11/19/06.
   6 //  Copyright 2006 Aaron Evans. All rights reserved.
   7 //
   8
   9 #import "NSStringICUAdditions.h"
  10 #import "ICUPattern.h"
  11 #import "ICUMatcher.h"
  12
  13 struct URegularExpression;
  14 /**
  15 * Structure represeting a compiled regular rexpression, plus the results
  16  *    of a match operation.
  17  * @draft ICU 3.0
  18  */
  19 typedef struct URegularExpression URegularExpression;
  20
  21 #define U_HIDE_DRAFT_API 1
  22 #define U_DISABLE_RENAMING 1
  23 #import "uregex.h"
  24
  25 @interface NSString (NSStringICUPrivateAdditions)
  26
  27 @end
  28
  29 @implementation NSString (NSStringICUAdditions)//
  30
  31 -(NSString *)replaceOccurrencesOfPattern:(NSString *)aPattern withString:(NSString *)replacementText {
  32         ICUPattern *p = [ICUPattern patternWithString:aPattern];
  33         ICUMatcher *m = [ICUMatcher matcherWithPattern:p overString:self];
  34         return [m replaceAllWithString:replacementText];
  35 }
  36
  37 -(BOOL)matchesPattern:(NSString *)aRegex {
  38         ICUPattern *p = [ICUPattern patternWithString:aRegex];
  39         ICUMatcher *m = [ICUMatcher matcherWithPattern:p overString:self];
  40         return [m matches];
  41 }
  42
  43 -(NSArray *)findPattern:(NSString *)aRegex {
  44         ICUPattern *p = [ICUPattern patternWithString:aRegex];
  45         ICUMatcher *matcher = [ICUMatcher matcherWithPattern:p overString:self];
  46         NSMutableArray *foundGroups = [NSMutableArray array];
  47
  48         [matcher findFromIndex:0];
  49         int i;
  50         for(i=0;i<=[matcher numberOfGroups];i++)
  51                 [foundGroups addObject:[matcher groupAtIndex:i]];
  52
  53         return [NSArray arrayWithArray:foundGroups];
  54 }
  55
  56 -(NSArray *)componentsSeparatedByPattern:(NSString *)aRegex {
  57         ICUPattern *p = [ICUPattern patternWithString:aRegex];
  58         return [p componentsSplitFromString:self];
  59 }
  60
  61 +(NSString *)stringWithICUString:(void *)utf16EncodedString {
  62         return [[[NSString alloc] initWithBytes:utf16EncodedString
  63                                                                          length:u_strlen(utf16EncodedString)*sizeof(UChar)
  64                                                                    encoding:[self nativeUTF16Encoding]] autorelease];
  65 }
  66
  67 +(NSStringEncoding)nativeUTF16Encoding {
  68         CFStringEncoding stringEncoding;
  69 #if __BIG_ENDIAN__
  70         stringEncoding = kCFStringEncodingUTF16BE;
  71 #elif __LITTLE_ENDIAN__
  72         stringEncoding = kCFStringEncodingUTF16LE;
  73 #endif
  74
  75         return CFStringConvertEncodingToNSStringEncoding(stringEncoding);
  76 }
  77
  78 -(void *)UTF16String {
  79         UChar *ret = (UChar *)[self cStringUsingEncoding:[NSString nativeUTF16Encoding]];
  80
  81         // for some reason, the null-terminator doesn't always show up at the right place and this
  82         // causes extra characters to be created in the unicode string.  We remove them here by force.
  83         int len = [self length];
  84         ret[len] = '\0';
  85         return ret;
  86 }
  87
  88 @end