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/*
* Copyright (C) 2010 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. 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 INC. 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.
*/
#include "config.h"
#include "WKString.h"
#include "WKStringPrivate.h"
#include "WKAPICast.h"
#include <JavaScriptCore/InitializeThreading.h>
#include <JavaScriptCore/OpaqueJSString.h>
#include <WebCore/WebCoreJITOperations.h>
#include <wtf/StdLibExtras.h>
#include <wtf/unicode/UTF8Conversion.h>
WKTypeID WKStringGetTypeID()
{
return WebKit::toAPI(API::String::APIType);
}
WKStringRef WKStringCreateWithUTF8CString(const char* string)
{
return WebKit::toAPI(&API::String::create(WTF::String::fromUTF8(string)).leakRef());
}
WKStringRef WKStringCreateWithUTF8CStringWithLength(const char* string, size_t stringLength)
{
return WebKit::toAPI(&API::String::create(WTF::String::fromUTF8(unsafeMakeSpan(string, stringLength))).leakRef());
}
bool WKStringIsEmpty(WKStringRef stringRef)
{
return WebKit::toImpl(stringRef)->stringView().isEmpty();
}
size_t WKStringGetLength(WKStringRef stringRef)
{
return WebKit::toImpl(stringRef)->stringView().length();
}
size_t WKStringGetCharacters(WKStringRef stringRef, WKChar* buffer, size_t bufferLength)
{
static_assert(sizeof(WKChar) == sizeof(UChar), "Size of WKChar must match size of UChar");
unsigned unsignedBufferLength = std::min<size_t>(bufferLength, std::numeric_limits<unsigned>::max());
auto substring = WebKit::toImpl(stringRef)->stringView().left(unsignedBufferLength);
substring.getCharacters(unsafeMakeSpan(reinterpret_cast<UChar*>(buffer), bufferLength));
return substring.length();
}
size_t WKStringGetMaximumUTF8CStringSize(WKStringRef stringRef)
{
return static_cast<size_t>(WebKit::toImpl(stringRef)->stringView().length()) * 3 + 1;
}
enum StrictType { NonStrict = false, Strict = true };
template <StrictType strict>
size_t WKStringGetUTF8CStringImpl(WKStringRef stringRef, char* buffer, size_t bufferSize)
{
if (!bufferSize)
return 0;
auto string = WebKit::toImpl(stringRef)->stringView();
auto target = unsafeMakeSpan(byteCast<char8_t>(buffer), bufferSize);
WTF::Unicode::ConversionResult<char8_t> result;
if (string.is8Bit())
result = WTF::Unicode::convert(string.span8(), target.first(bufferSize - 1));
else {
if constexpr (strict == NonStrict)
result = WTF::Unicode::convertReplacingInvalidSequences(string.span16(), target.first(bufferSize - 1));
else {
result = WTF::Unicode::convert(string.span16(), target.first(bufferSize - 1));
if (result.code == WTF::Unicode::ConversionResultCode::SourceInvalid)
return 0;
}
}
target[result.buffer.size()] = '\0';
return result.buffer.size() + 1;
}
size_t WKStringGetUTF8CString(WKStringRef stringRef, char* buffer, size_t bufferSize)
{
return WKStringGetUTF8CStringImpl<StrictType::Strict>(stringRef, buffer, bufferSize);
}
size_t WKStringGetUTF8CStringNonStrict(WKStringRef stringRef, char* buffer, size_t bufferSize)
{
return WKStringGetUTF8CStringImpl<StrictType::NonStrict>(stringRef, buffer, bufferSize);
}
bool WKStringIsEqual(WKStringRef aRef, WKStringRef bRef)
{
return WebKit::toImpl(aRef)->stringView() == WebKit::toImpl(bRef)->stringView();
}
bool WKStringIsEqualToUTF8CString(WKStringRef aRef, const char* b)
{
// FIXME: Should we add a fast path that avoids memory allocation when the string is all ASCII?
// FIXME: We can do even the general case more efficiently if we write a function in StringView that understands UTF-8 C strings.
return WebKit::toImpl(aRef)->stringView() == WTF::String::fromUTF8(b);
}
bool WKStringIsEqualToUTF8CStringIgnoringCase(WKStringRef aRef, const char* b)
{
// FIXME: Should we add a fast path that avoids memory allocation when the string is all ASCII?
// FIXME: We can do even the general case more efficiently if we write a function in StringView that understands UTF-8 C strings.
return equalIgnoringASCIICase(WebKit::toImpl(aRef)->stringView(), WTF::String::fromUTF8(b));
}
WKStringRef WKStringCreateWithJSString(JSStringRef jsStringRef)
{
auto apiString = jsStringRef ? API::String::create(jsStringRef->string()) : API::String::createNull();
return WebKit::toAPI(&apiString.leakRef());
}
JSStringRef WKStringCopyJSString(WKStringRef stringRef)
{
JSC::initialize();
WebCore::populateJITOperations();
return OpaqueJSString::tryCreate(WebKit::toImpl(stringRef)->string()).leakRef();
}
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