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129 lines (110 loc) · 4.13 KB
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/*
* Copyright (C) 2006, 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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 "JSStringRef.h"
#include "JSStringRefPrivate.h"
#include "InitializeThreading.h"
#include "OpaqueJSString.h"
#include <wtf/unicode/UTF8.h>
using namespace JSC;
using namespace WTF::Unicode;
JSStringRef JSStringCreateWithCharacters(const JSChar* chars, size_t numChars)
{
initializeThreading();
return OpaqueJSString::create(chars, numChars).leakRef();
}
JSStringRef JSStringCreateWithUTF8CString(const char* string)
{
initializeThreading();
if (string) {
size_t length = strlen(string);
Vector<UChar, 1024> buffer(length);
UChar* p = buffer.data();
bool sourceIsAllASCII;
const LChar* stringStart = reinterpret_cast<const LChar*>(string);
if (conversionOK == convertUTF8ToUTF16(&string, string + length, &p, p + length, &sourceIsAllASCII)) {
if (sourceIsAllASCII)
return OpaqueJSString::create(stringStart, length).leakRef();
return OpaqueJSString::create(buffer.data(), p - buffer.data()).leakRef();
}
}
return OpaqueJSString::create().leakRef();
}
JSStringRef JSStringCreateWithCharactersNoCopy(const JSChar* chars, size_t numChars)
{
initializeThreading();
return OpaqueJSString::create(StringImpl::createWithoutCopying(chars, numChars)).leakRef();
}
JSStringRef JSStringRetain(JSStringRef string)
{
string->ref();
return string;
}
void JSStringRelease(JSStringRef string)
{
string->deref();
}
size_t JSStringGetLength(JSStringRef string)
{
return string->length();
}
const JSChar* JSStringGetCharactersPtr(JSStringRef string)
{
return string->characters();
}
size_t JSStringGetMaximumUTF8CStringSize(JSStringRef string)
{
// Any UTF8 character > 3 bytes encodes as a UTF16 surrogate pair.
return string->length() * 3 + 1; // + 1 for terminating '\0'
}
size_t JSStringGetUTF8CString(JSStringRef string, char* buffer, size_t bufferSize)
{
if (!bufferSize)
return 0;
char* destination = buffer;
ConversionResult result;
if (string->is8Bit()) {
const LChar* source = string->characters8();
result = convertLatin1ToUTF8(&source, source + string->length(), &destination, destination + bufferSize - 1);
} else {
const UChar* source = string->characters16();
result = convertUTF16ToUTF8(&source, source + string->length(), &destination, destination + bufferSize - 1, true);
}
*destination++ = '\0';
if (result != conversionOK && result != targetExhausted)
return 0;
return destination - buffer;
}
bool JSStringIsEqual(JSStringRef a, JSStringRef b)
{
return OpaqueJSString::equal(a, b);
}
bool JSStringIsEqualToUTF8CString(JSStringRef a, const char* b)
{
JSStringRef bBuf = JSStringCreateWithUTF8CString(b);
bool result = JSStringIsEqual(a, bBuf);
JSStringRelease(bBuf);
return result;
}