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
34BOOL stringIsCaseInsensitiveEqualToString(NSString *first, NSString *second)
35{
36    return [first compare:second options:(NSCaseInsensitiveSearch|NSLiteralSearch)] == NSOrderedSame;
37}
38
39BOOL hasCaseInsensitiveSuffix(NSString *string, NSString *suffix)
40{
41    return [string rangeOfString:suffix options:(NSCaseInsensitiveSearch | NSBackwardsSearch | NSAnchoredSearch)].location != NSNotFound;
42}
43
44BOOL hasCaseInsensitiveSubstring(NSString *string, NSString *substring)
45{
46    return [string rangeOfString:substring options:NSCaseInsensitiveSearch].location != NSNotFound;
47}
48
49NSString *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
71CFStringEncoding 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