void CLDS2_UrlHandler_GZipFile::SaveChunks(const SLDS2_File& file_info,
CLDS2_Database& db)
{
// Collect information about chunks, store in in the database.
auto_ptr<CNcbiIfstream> in(
new CNcbiIfstream(file_info.name.c_str(), ios::binary));
if ( !in->is_open() ) {
return;
}
CGZipChunkHandler chunk_handler(file_info, db);
g_GZip_ScanForChunks(*in, chunk_handler);
}
HRESULT parse_dxbc(const char *data, SIZE_T data_size,
HRESULT (*chunk_handler)(const char *data, DWORD data_size, DWORD tag, void *ctx), void *ctx)
{
const char *ptr = data;
HRESULT hr = S_OK;
DWORD chunk_count;
DWORD total_size;
unsigned int i;
DWORD tag;
read_dword(&ptr, &tag);
TRACE("tag: %s.\n", debugstr_an((const char *)&tag, 4));
if (tag != TAG_DXBC)
{
WARN("Wrong tag.\n");
return E_INVALIDARG;
}
/* checksum? */
skip_dword_unknown(&ptr, 4);
skip_dword_unknown(&ptr, 1);
read_dword(&ptr, &total_size);
TRACE("total size: %#x\n", total_size);
read_dword(&ptr, &chunk_count);
TRACE("chunk count: %#x\n", chunk_count);
for (i = 0; i < chunk_count; ++i)
{
DWORD chunk_tag, chunk_size;
const char *chunk_ptr;
DWORD chunk_offset;
read_dword(&ptr, &chunk_offset);
TRACE("chunk %u at offset %#x\n", i, chunk_offset);
chunk_ptr = data + chunk_offset;
read_dword(&chunk_ptr, &chunk_tag);
read_dword(&chunk_ptr, &chunk_size);
hr = chunk_handler(chunk_ptr, chunk_size, chunk_tag, ctx);
if (FAILED(hr)) break;
}
return hr;
}