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      1 /*
      2  * Copyright (C) 2005, 2007 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #import "config.h"
     30 #import "WebCoreNSStringExtras.h"
     31 
     32 #import <wtf/RetainPtr.h>
     33 
     34 BOOL stringIsCaseInsensitiveEqualToString(NSString *first, NSString *second)
     35 {
     36     return [first compare:second options:(NSCaseInsensitiveSearch|NSLiteralSearch)] == NSOrderedSame;
     37 }
     38 
     39 BOOL hasCaseInsensitiveSuffix(NSString *string, NSString *suffix)
     40 {
     41     return [string rangeOfString:suffix options:(NSCaseInsensitiveSearch | NSBackwardsSearch | NSAnchoredSearch)].location != NSNotFound;
     42 }
     43 
     44 BOOL hasCaseInsensitiveSubstring(NSString *string, NSString *substring)
     45 {
     46     return [string rangeOfString:substring options:NSCaseInsensitiveSearch].location != NSNotFound;
     47 }
     48 
     49 NSString *filenameByFixingIllegalCharacters(NSString *string)
     50 {
     51     NSMutableString *filename = [[string mutableCopy] autorelease];
     52 
     53     // Strip null characters.
     54     unichar nullChar = 0;
     55     [filename replaceOccurrencesOfString:[NSString stringWithCharacters:&nullChar length:0] withString:@"" options:0 range:NSMakeRange(0, [filename length])];
     56 
     57     // Replace "/" with "-".
     58     [filename replaceOccurrencesOfString:@"/" withString:@"-" options:0 range:NSMakeRange(0, [filename length])];
     59 
     60     // Replace ":" with "-".
     61     [filename replaceOccurrencesOfString:@":" withString:@"-" options:0 range:NSMakeRange(0, [filename length])];
     62 
     63     // Strip leading dots.
     64     while ([filename hasPrefix:@"."]) {
     65         [filename deleteCharactersInRange:NSMakeRange(0,1)];
     66     }
     67 
     68     return filename;
     69 }
     70 
     71 CFStringEncoding stringEncodingForResource(Handle resource)
     72 {
     73     short resRef = HomeResFile(resource);
     74     if (ResError() != noErr)
     75         return NSMacOSRomanStringEncoding;
     76 
     77     // Get the FSRef for the current resource file
     78     FSRef fref;
     79     OSStatus error = FSGetForkCBInfo(resRef, 0, NULL, NULL, NULL, &fref, NULL);
     80     if (error != noErr)
     81         return NSMacOSRomanStringEncoding;
     82 
     83     RetainPtr<CFURLRef> url(AdoptCF, CFURLCreateFromFSRef(NULL, &fref));
     84     if (!url)
     85         return NSMacOSRomanStringEncoding;
     86 
     87     NSString *path = [(NSURL *)url.get() path];
     88 
     89     // Get the lproj directory name
     90     path = [path stringByDeletingLastPathComponent];
     91     if (!stringIsCaseInsensitiveEqualToString([path pathExtension], @"lproj"))
     92         return NSMacOSRomanStringEncoding;
     93 
     94     NSString *directoryName = [[path stringByDeletingPathExtension] lastPathComponent];
     95     RetainPtr<CFStringRef> locale(AdoptCF, CFLocaleCreateCanonicalLocaleIdentifierFromString(NULL, (CFStringRef)directoryName));
     96     if (!locale)
     97         return NSMacOSRomanStringEncoding;
     98 
     99     LangCode lang;
    100     RegionCode region;
    101     error = LocaleStringToLangAndRegionCodes([(NSString *)locale.get() UTF8String], &lang, &region);
    102     if (error != noErr)
    103         return NSMacOSRomanStringEncoding;
    104 
    105     TextEncoding encoding;
    106     error = UpgradeScriptInfoToTextEncoding(kTextScriptDontCare, lang, region, NULL, &encoding);
    107     if (error != noErr)
    108         return NSMacOSRomanStringEncoding;
    109 
    110     return encoding;
    111 }
    112 
    113