/*

 * Copyright (C) 2005, 2006 Apple Computer, 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.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. OR

 * 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. 

 */

#include "config.h"

#include "DeprecatedString.h"

#import <wtf/Assertions.h>

#import "TextEncoding.h"

using namespace WebCore;

void DeprecatedString::setBufferFromCFString(CFStringRef cfs)

{

    if (!cfs) {

        return;

    }

    CFIndex size = CFStringGetLength(cfs);

    UniChar fixedSizeBuffer[1024];

    UniChar *buffer;

    if (size > (CFIndex)(sizeof(fixedSizeBuffer) / sizeof(UniChar))) {

        buffer = (UniChar *)fastMalloc(size * sizeof(UniChar));

    } else {

        buffer = fixedSizeBuffer;

    }

    CFStringGetCharacters(cfs, CFRangeMake (0, size), buffer);

    setUnicode((const DeprecatedChar *)buffer, (unsigned)size);

    if (buffer != fixedSizeBuffer) {

        fastFree(buffer);

    }

}

DeprecatedString DeprecatedString::fromCFString(CFStringRef cfs)

{

    DeprecatedString qs;

    qs.setBufferFromCFString(cfs);

    return qs;

}

DeprecatedString DeprecatedString::fromNSString(NSString *nss)

{

    DeprecatedString qs;

    qs.setBufferFromCFString((CFStringRef)nss);

    return qs;

}

NSString *DeprecatedString::getNSString() const

{

    // The Cocoa calls in this method don't need exceptions blocked

    // because they are simple NSString calls that can't throw.

    int length = dataHandle[0]->_length;

    if (dataHandle[0]->_isUnicodeValid) {

        return [NSString stringWithCharacters:(const unichar *)unicode() length:length];

    }

    if (dataHandle[0]->_isAsciiValid) {

        return [[[NSString alloc] initWithBytes:ascii() length:length encoding:NSISOLatin1StringEncoding] autorelease];

    }

    FATAL("invalid character cache");

    return nil;

}