Data RunLengthEncoding::Decompress(const void *data, size_t size) {
istringstream stream;
_parseData((uint8_t*)data, size, &stream);
ostringstream decompressed;
while(_hasData(&stream)) {
_decodeArbitraryWords(&stream, &decompressed);
if (!_hasData(&stream)) {
break;
}
_decodeIdenticalWords(&stream, &decompressed);
}
return _extractData(&decompressed);
}
void _parseDataInBuffer(const char * buffer, int buffer_size)
{ xmlDocPtr weather;
xmlNodePtr cur;
weather = xmlParseMemory(buffer, buffer_size);
if ( !weather )
{ fprintf(stderr, "Failed to parse weather data\n");
exit(1);
}
cur = xmlDocGetRootElement(weather);
if ( !cur )
{ fprintf(stderr, "Weather file is empty\n");
xmlFreeDoc(weather);
exit(1);
}
if ( xmlStrcmp((const xmlChar * )cur->name, (const xmlChar * )"dwml") )
{ fprintf(stderr, "Fetched wrong file\nNode named \"%s\"", cur->name);
xmlFreeDoc(weather);
exit(1);
}
cur = cur->xmlChildrenNode;
while ( cur )
{ if ( !xmlStrcmp((const xmlChar * )cur->name, (const xmlChar * )"head") )
{ _parseData(weather, cur);
}
cur = cur->next;
}
xmlFreeDoc(weather);
}
