PsdStatus PsdFile::readLayers()
{
if (!mIsOpen)
return PsdStatusNoInit;
PsdStatus status;
const uint8_t *ptr, *end = mLayersBlock.getEndAddress();
if (mLayersCount > 0 && mLayersInfoBlock.mLength) {
ptr = mLayersBlock.mAddress + 6;
status = readLayers(ptr, end);
if (status != PsdStatusOK)
return status;
} else
ptr = mLayersInfoBlock.getEndAddress();
if (((ptrdiff_t) ptr - (ptrdiff_t) mMapped.get().mAddress) & 1) // global layer mask info is 2 bytes aligned
ptr++;
if (ptr + 4 > end)
return PsdStatusFileOutOfRange;
mGlobalLayerMaskBlock.assign(ptr);
LOG_DEBUG_BLOCK(mGlobalLayerMaskBlock);
mAdditionalInfoBlock.mAddress = mGlobalLayerMaskBlock.getEndAddress();
mAdditionalInfoBlock.mLength = (ptrdiff_t) mLayersBlock.getEndAddress() - (ptrdiff_t) mAdditionalInfoBlock.mAddress;
LOG_DEBUG_BLOCK(mAdditionalInfoBlock);
return readAdditionalInfo();
}
bool LevelReader::readLevel(const std::string& fileName, LevelData& data)
{
XMLDocument xmlDoc;
XMLError result = xmlDoc.LoadFile(fileName.c_str());
XMLCheckResult(result);
XMLElement* map = xmlDoc.FirstChildElement("map");
if (map == nullptr)
{
g_logger->logError("LevelReader", "XML file could not be read, no map node found.");
return false;
}
if (!readLevelProperties(map, data)) return false;
if (!readFirstGridIDs(map, data)) return false;
if (!readLayers(map, data)) return false;
if (!readObjects(map, data)) return false;
updateData(data);
if (!checkData(data)) return false;
return true;
}
PsdStatus PsdFile::readAdditionalInfo()
{
assert(mAdditionalInfoBlock.mAddress != NULL);
if (mAdditionalInfoBlock.mLength == 0)
return PsdStatusOK;
const uint8_t *ptr = mAdditionalInfoBlock.mAddress, *end = mAdditionalInfoBlock.getEndAddress() - 4;
const uint8_t *key;
uint32_t length;
PsdStatus status;
while (ptr < end) {
if (!CHECK_FOUR_CHAR(ptr, '8', 'B', 'I', 'M')
&& !CHECK_FOUR_CHAR(ptr, '8', 'B', '6', '4')) {
LOG_ALWAYS("Global addtional info signature is not found. (%u)",
uint32_t(ptr - mMapped.get().mAddress));
return PsdStatusOK;
}
key = ptr + 4;
length = PsdUtils::fetch32(ptr + 8);
ptr += 12;
if (CHECK_FOUR_CHAR(key, 'L', 'r', '1', '6')) {
LOG_DEBUG("Layers are stored in global additional info.");
readLayerCount(ptr);
if (mLayersCount > 0) {
const uint8_t *data = ptr + 2;
status = readLayers(data, ptr + length);
if (status != PsdStatusOK)
return status;
}
}
// XXX test shows it should be pad by 4, psdparse is not able to parse this though
ptr += PAD4(length);
}
return PsdStatusOK;
}
PsdLayers PsdFile::getLayers()
{
if (!mLayers)
readLayers();
return mLayers;
}
