lvfulong
142 lines
4.1 KiB
C++
142 lines
4.1 KiB
C++
#ifdef JS_JSC
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#include "JSCArrayBuffer.h"
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#include <JavaScriptCore/JSTypedArray.h>
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#include "JSCProxyTLS.h"
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#include "util/Log.h"
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#include <vector>
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#include "JSCProxyType.h"
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namespace laya {
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//TODO 这里没有考虑多线程的问题，如果js要支持多线程的话，需要修改。
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struct JsStrBuff {
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char* _buff;
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int _len;
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static std::vector<JsStrBuff> jsstrbuffs;
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static int curIdx;
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JsStrBuff() {
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_buff = NULL;
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_len = 0;
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}
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static JsStrBuff& getAData() {
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if (JsStrBuff::curIdx >= JsStrBuff::jsstrbuffs.size()) {
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JsStrBuff::jsstrbuffs.push_back(JsStrBuff());
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JsStrBuff::curIdx++;
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return JsStrBuff::jsstrbuffs.back();
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}
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else {
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return JsStrBuff::jsstrbuffs[JsStrBuff::curIdx++];
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}
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}
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};
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std::vector<JsStrBuff> JsStrBuff::jsstrbuffs;
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int JsStrBuff::curIdx = 0;
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void resetJsStrBuf() {
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JsStrBuff::curIdx = 0;
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}
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char* JsCharToC(JSStringRef str) {
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int len = 0;
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if (str == nullptr)
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return nullptr;//return "";
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len = JSStringGetMaximumUTF8CStringSize(str);
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if (len <= 0)
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return nullptr;//return "";
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JsStrBuff& curdata = JsStrBuff::getAData();
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char*& tocharBuf = curdata._buff;
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int& tocharBufLen = curdata._len;
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//tocharBuf= new char[len + 1];
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if (len > tocharBufLen) {
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tocharBufLen = len;
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if (tocharBuf != NULL)
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delete[] tocharBuf;
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tocharBuf = new char[len+1];
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}
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else {
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//如果占用空间太大，也要重新分配
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if (tocharBufLen > 1024 ) {
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tocharBufLen = len;
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if (tocharBuf != NULL)
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delete[] tocharBuf;
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tocharBuf = new char[len+1];
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}
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}
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JSStringGetUTF8CString(str,tocharBuf,len);
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return tocharBuf;
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}
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char* JsCharToC(JSValueRef p_vl) {
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JSContextRef ctx = __TlsData::GetInstance()->GetCurContext();
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JSStringRef str = JSValueToStringCopy(ctx, p_vl, nullptr);
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if (str == nullptr)
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return nullptr;//return "";
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char* ret = JsCharToC(str);
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JSStringRelease(str);
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return ret;
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}
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}
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namespace laya{
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static void deallocator(void* bytes, void* deallocatorContext)
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{
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if (bytes){
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delete (char*)bytes;
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}
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}
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JSValueRef createJSAB(char* pData, int len)
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{
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JSContextRef ctx = __TlsData::GetInstance()->GetCurContext();
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char* pBuffer = new char[len];
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memcpy(pBuffer, pData, len);
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return JSObjectMakeArrayBufferWithBytesNoCopy(ctx, pBuffer, len, deallocator, pBuffer, NULL);
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}
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JSValueRef createJSABAligned(char* pData, int len)
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{
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int asz = (len+3) & 0xfffffffc;
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JSContextRef ctx = __TlsData::GetInstance()->GetCurContext();
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char* pBuffer = new char[asz];
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memcpy(pBuffer, pData, len);
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for( int i = len; i < asz; i++ )
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{
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pBuffer[i] = 0;
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}
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return JSObjectMakeArrayBufferWithBytesNoCopy(ctx, pBuffer, asz, deallocator, pBuffer, NULL);
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}
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bool extractJSAB(JSValueRef ab, char*& data, int& len)
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{
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JSContextRef ctx = __TlsData::GetInstance()->GetCurContext();
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JSObjectRef arrayObj = JSValueToObject(ctx,ab,NULL);
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JSTypedArrayType arrayType = JSValueGetTypedArrayType(ctx, ab, NULL);
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switch(arrayType)
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{
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case kJSTypedArrayTypeNone:
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{
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data = NULL;
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len = 0;
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return false;
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}
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break;
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case kJSTypedArrayTypeArrayBuffer:
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{
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data = (char*)JSObjectGetArrayBufferBytesPtr(ctx, arrayObj, NULL);
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len = (int)JSObjectGetArrayBufferByteLength(ctx, arrayObj, NULL);
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return true;
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}
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break;
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default:
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{
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data = (char*)JSObjectGetTypedArrayBytesPtr(ctx, arrayObj, NULL) + JSObjectGetTypedArrayByteOffset(ctx, arrayObj, NULL);
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len = (int)JSObjectGetTypedArrayByteLength(ctx, arrayObj, NULL);
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return true;
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}
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break;
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}
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}
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}
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#endif
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