android_external_webkit/JavaScriptCore/API/JSStringRef.cpp at froyo · madmack/android_external_webkit · GitHub

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* 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 "JSStringRef.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).releaseRef();

}

JSStringRef JSStringCreateWithUTF8CString(const char* string)

{

initializeThreading();

if (string) {

size_t length = strlen(string);

Vector<UChar, 1024> buffer(length);

UChar* p = buffer.data();

if (conversionOK == convertUTF8ToUTF16(&string, string + length, &p, p + length))

return OpaqueJSString::create(buffer.data(), p - buffer.data()).releaseRef();

}

// Null string.

return OpaqueJSString::create().releaseRef();

}

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* p = buffer;

const UChar* d = string->characters();

ConversionResult result = convertUTF16ToUTF8(&d, d + string->length(), &p, p + bufferSize - 1, true);

*p++ = '\0';

if (result != conversionOK && result != targetExhausted)

return 0;

return p - buffer;

}

bool JSStringIsEqual(JSStringRef a, JSStringRef b)

{

unsigned len = a->length();

return len == b->length() && 0 == memcmp(a->characters(), b->characters(), len * sizeof(UChar));

}

bool JSStringIsEqualToUTF8CString(JSStringRef a, const char* b)

{

JSStringRef bBuf = JSStringCreateWithUTF8CString(b);

bool result = JSStringIsEqual(a, bBuf);

JSStringRelease(bBuf);

return result;

}

android_external_webkit/JavaScriptCore/API/JSStringRef.cpp at froyo · madmack/android_external_webkit · GitHub

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