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#include "ResourceManager.h"
namespace Cryo {
ResourceManager::ResourceManager() {
}
ResourceManager::ResourceManager(const Common::String &datFileName) {
LoadDatFile(datFileName);
}
ResourceManager::~ResourceManager() {
}
bool ResourceManager::LoadDatFile(const Common::String &datFileName) {
if (_datFile.isOpen()) {
_datFile.close();
_files.clear();
}
assert(_datFile.open(datFileName));
unsigned short numFiles = _datFile.readUint16LE();
for (unsigned short i = 0; i < numFiles; i++) {
DatFileEntry entry;
_datFile.read(entry._name, sizeof(entry._name));
entry._size = _datFile.readUint32LE();
entry._offset = _datFile.readUint32LE();
entry._flag = _datFile.readByte();
_files.push_back(entry);
}
return true;
}
Common::SeekableReadStream *ResourceManager::GetFile(const Common::String &resName, unsigned int hintIndex) {
// First, try raw disk file so we can support modding/patching
if (Common::File::exists(resName)) {
debug("Loading %s from disk", resName);
Common::File *resource = new Common::File();
resource->open(resName);
return resource;
}
// Look inside .dat file
if (_datFile.isOpen()) {
for (unsigned int i = hintIndex; i < _files.size(); i++) {
if (!resName.compareToIgnoreCase(_files[i]._name)) {
debug("Loading %s from dat file", resName);
Common::SeekableSubReadStream *resource = new Common::SeekableSubReadStream(&_datFile, _files[i]._offset, _files[i]._offset + _files[i]._size);
return resource;
}
}
}
debug("Unable to load %s - does't exists", resName);
return nullptr;
}
Common::SeekableReadStream *ResourceManager::GetFile(unsigned int resIndex) {
if (_files.size() > resIndex) {
return GetFile(Common::String(_files[resIndex]._name), resIndex);
}
return nullptr;
}
void *ResourceManager::StreamToBuffer(Common::SeekableReadStream *stream, unsigned int *size) {
if (!stream)
return nullptr;
unsigned int readSize = stream->size();
unsigned char *data = new unsigned char[readSize + 1];
readSize = stream->read(data, readSize);
if (size)
*size = readSize;
return data;
}
void *ResourceManager::GetData(const Common::String &resName, unsigned int *size) {
Common::SeekableReadStream *resource = GetFile(resName);
void *data = StreamToBuffer(resource, size);
delete resource;
return data;
}
void *ResourceManager::GetData(int resIndex, unsigned int *size) {
Common::SeekableReadStream *resource = GetFile(resIndex);
void *data = StreamToBuffer(resource, size);
delete resource;
return data;
}
}
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