/*

 * Copyright (C) 2005, 2007 Apple Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer. 

 * 2.  Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission. 

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#import "config.h"

#import "WebCoreNSStringExtras.h"

#import <wtf/RetainPtr.h>

BOOL stringIsCaseInsensitiveEqualToString(NSString *first, NSString *second)

{

    return [first compare:second options:(NSCaseInsensitiveSearch|NSLiteralSearch)] == NSOrderedSame;

}

BOOL hasCaseInsensitiveSuffix(NSString *string, NSString *suffix)

{

    return [string rangeOfString:suffix options:(NSCaseInsensitiveSearch | NSBackwardsSearch | NSAnchoredSearch)].location != NSNotFound;

}

BOOL hasCaseInsensitiveSubstring(NSString *string, NSString *substring)

{

    return [string rangeOfString:substring options:NSCaseInsensitiveSearch].location != NSNotFound;

}

NSString *filenameByFixingIllegalCharacters(NSString *string)

{

    NSMutableString *filename = [[string mutableCopy] autorelease];

    // Strip null characters.

    unichar nullChar = 0;

    [filename replaceOccurrencesOfString:[NSString stringWithCharacters:&nullChar length:0] withString:@"" options:0 range:NSMakeRange(0, [filename length])];

    // Replace "/" with "-".

    [filename replaceOccurrencesOfString:@"/" withString:@"-" options:0 range:NSMakeRange(0, [filename length])];

    // Replace ":" with "-".

    [filename replaceOccurrencesOfString:@":" withString:@"-" options:0 range:NSMakeRange(0, [filename length])];

    // Strip leading dots.

    while ([filename hasPrefix:@"."]) {

        [filename deleteCharactersInRange:NSMakeRange(0,1)];

    }

    return filename;

}

CFStringEncoding stringEncodingForResource(Handle resource)

{

    short resRef = HomeResFile(resource);

    if (ResError() != noErr)

        return NSMacOSRomanStringEncoding;

    // Get the FSRef for the current resource file

    FSRef fref;

    OSStatus error = FSGetForkCBInfo(resRef, 0, NULL, NULL, NULL, &fref, NULL);

    if (error != noErr)

        return NSMacOSRomanStringEncoding;

    RetainPtr<CFURLRef> url(AdoptCF, CFURLCreateFromFSRef(NULL, &fref));

    if (!url)

        return NSMacOSRomanStringEncoding;

    NSString *path = [(NSURL *)url.get() path];

    // Get the lproj directory name

    path = [path stringByDeletingLastPathComponent];

    if (!stringIsCaseInsensitiveEqualToString([path pathExtension], @"lproj"))

        return NSMacOSRomanStringEncoding;

    NSString *directoryName = [[path stringByDeletingPathExtension] lastPathComponent];

    RetainPtr<CFStringRef> locale(AdoptCF, CFLocaleCreateCanonicalLocaleIdentifierFromString(NULL, (CFStringRef)directoryName));

    if (!locale)

        return NSMacOSRomanStringEncoding;

    LangCode lang;

    RegionCode region;

    error = LocaleStringToLangAndRegionCodes([(NSString *)locale.get() UTF8String], &lang, &region);

    if (error != noErr)

        return NSMacOSRomanStringEncoding;

    TextEncoding encoding;

    error = UpgradeScriptInfoToTextEncoding(kTextScriptDontCare, lang, region, NULL, &encoding);

    if (error != noErr)

        return NSMacOSRomanStringEncoding;

    return encoding;

}