unsigned char *CCZipFile::unZipIfNeed(unsigned char * buffer,uLong insize,uLong& outsize)
{
//50,4B,03,04
if(insize>4 && buffer[0]==0x50 && buffer[1]==0x4B && buffer[2]==0x03 && buffer[3]==0x04)
{
CCZipFile *zip = createWithBuffer(buffer,insize);
if(zip)
{
std::string name = zip->getFirstFilename();
uLong newsize=0;
unsigned char* newbuff = zip->getFileData(name.c_str(), &newsize);
if(newbuff)
{
outsize = newsize;
return newbuff;
}
}
}
return NULL;
}
int CCLuaStack::lua_loadChunksFromZIP(lua_State *L)
{
if (lua_gettop(L) < 1)
{
CCLOG("lua_loadChunksFromZIP() - invalid arguments");
return 0;
}
const char *zipFilename = lua_tostring(L, -1);
lua_settop(L, 0);
CCFileUtils *utils = CCFileUtils::sharedFileUtils();
string zipFilePath = utils->fullPathForFilename(zipFilename);
zipFilename = NULL;
CCLuaStack *stack = CCLuaStack::stack(L);
do
{
unsigned long size = 0;
void *buffer = NULL;
unsigned char *zipFileData = utils->getFileData(zipFilePath.c_str(), "rb", &size);
CCZipFile *zip = NULL;
bool isXXTEA = stack && stack->m_xxteaEnabled && zipFileData;
for (unsigned int i = 0; isXXTEA && i < stack->m_xxteaSignLen && i < size; ++i)
{
isXXTEA = zipFileData[i] == stack->m_xxteaSign[i];
}
if (isXXTEA)
{
// decrypt XXTEA
xxtea_long len = 0;
buffer = xxtea_decrypt(zipFileData + stack->m_xxteaSignLen,
(xxtea_long)size - (xxtea_long)stack->m_xxteaSignLen,
(unsigned char*)stack->m_xxteaKey,
(xxtea_long)stack->m_xxteaKeyLen,
&len);
delete []zipFileData;
zipFileData = NULL;
zip = CCZipFile::createWithBuffer(buffer, len);
}
else
{
if (zipFileData) {
zip = CCZipFile::createWithBuffer(zipFileData, size);
}
}
if (zip)
{
CCLOG("lua_loadChunksFromZIP() - load zip file: %s%s", zipFilePath.c_str(), isXXTEA ? "*" : "");
lua_getglobal(L, "package");
lua_getfield(L, -1, "preload");
int count = 0;
string filename = zip->getFirstFilename();
while (filename.length())
{
unsigned long bufferSize = 0;
unsigned char *buffer = zip->getFileData(filename.c_str(), &bufferSize);
if (bufferSize)
{
if (lua_loadbuffer(L, (char*)buffer, (int)bufferSize, filename.c_str()) == 0)
{
lua_setfield(L, -2, filename.c_str());
++count;
}
delete []buffer;
}
filename = zip->getNextFilename();
}
CCLOG("lua_loadChunksFromZIP() - loaded chunks count: %d", count);
lua_pop(L, 2);
lua_pushboolean(L, 1);
}
else
{
CCLOG("lua_loadChunksFromZIP() - not found or invalid zip file: %s", zipFilePath.c_str());
lua_pushboolean(L, 0);
}
if (zipFileData)
{
delete []zipFileData;
}
if (buffer)
{
free(buffer);
}
} while (0);
return 1;
}
int CCLuaStack::loadChunksFromZip(lua_State *L)
{
const char *zipFilename = lua_tostring(L, -1);
CCFileUtils *utils = CCFileUtils::sharedFileUtils();
string zipFilePath = utils->fullPathForFilename(zipFilename);
lua_pop(L, 1);
zipFilename = NULL;
do
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
string tmpFilePath = utils->getWriteablePath().append("cc_load_chunks.tmp");
unsigned long size = 0;
unsigned char *buffer = utils->getFileData(zipFilePath.c_str(), "rb", &size);
bool success = false;
do
{
if (size == 0 || !buffer)
{
CCLOG("CCLoadChunksFromZip() - read source file %s failure", zipFilePath.c_str());
break;
}
FILE *tmp = fopen(tmpFilePath.c_str(), "wb");
if (!tmp)
{
CCLOG("CCLoadChunksFromZip() - create tmp file %s failure", tmpFilePath.c_str());
break;
}
success = fwrite(buffer, 1, size, tmp) > 0;
fclose(tmp);
if (success)
{
zipFilePath = tmpFilePath;
CCLOG("CCLoadChunksFromZip() - copy zip file to %s ok", tmpFilePath.c_str());
}
} while (0);
if (buffer)
{
delete []buffer;
}
if (!success)
{
lua_pushboolean(L, 0);
break;
}
#endif
CCZipFile *zip = CCZipFile::create(zipFilePath.c_str());
if (zip)
{
CCLOG("CCLoadChunksFromZip() - load zip file: %s", zipFilePath.c_str());
lua_getglobal(L, "package");
lua_getfield(L, -1, "preload");
CCLOG("CCLoadChunksFromZip() - began");
int count = 0;
string filename = zip->getFirstFilename();
while (filename.length())
{
unsigned long bufferSize = 0;
unsigned char *buffer = zip->getFileData(filename.c_str(), &bufferSize);
if (bufferSize)
{
luaL_loadbuffer(L, (char*)buffer, bufferSize, filename.c_str());
lua_pushcclosure(L, &cc_lua_require, 1);
lua_setfield(L, -2, filename.c_str());
delete []buffer;
++count;
// CCLOG("CCLoadChunksFromZip() - chunk %s", filename.c_str());
}
filename = zip->getNextFilename();
}
CCLOG("CCLoadChunksFromZip() - ended, chunks count %d", count);
lua_pop(L, 2);
lua_pushboolean(L, 1);
}
else
{
CCLOG("CCLoadChunksFromZip() - not found zip file: %s", zipFilePath.c_str());
lua_pushboolean(L, 0);
}
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
unlink(tmpFilePath.c_str());
#endif
} while (0);
return 1;
}