void construct(t_index& idx, const std::string& file, cache_config& config, uint8_t num_bytes, wt_tag)
{
auto event = memory_monitor::event("construct wavelet tree");
if ((t_index::alphabet_category::WIDTH==8 and num_bytes <= 1)
or (t_index::alphabet_category::WIDTH==0 and num_bytes != 'd')) {
int_vector_buffer<t_index::alphabet_category::WIDTH> text_buf(file, std::ios::in, 1024*1024, num_bytes*8, (bool)num_bytes);
t_index tmp(text_buf, text_buf.size());
idx.swap(tmp);
} else {
int_vector<t_index::alphabet_category::WIDTH> text;
load_vector_from_file(text, file, num_bytes);
std::string tmp_key = util::to_string(util::pid())+"_"+util::to_string(util::id());
std::string tmp_file_name = cache_file_name(tmp_key, config);
store_to_file(text, tmp_file_name);
util::clear(text);
{
int_vector_buffer<t_index::alphabet_category::WIDTH> text_buf(tmp_file_name);
t_index tmp(text_buf, text_buf.size());
idx.swap(tmp);
}
sdsl::remove(tmp_file_name);
}
}
void construct(t_index& idx, const std::string& file, cache_config& config, uint8_t num_bytes, csa_tag)
{
auto event = memory_monitor::event("construct CSA");
const char* KEY_TEXT = key_text_trait<t_index::alphabet_category::WIDTH>::KEY_TEXT;
const char* KEY_BWT = key_bwt_trait<t_index::alphabet_category::WIDTH>::KEY_BWT;
typedef int_vector<t_index::alphabet_category::WIDTH> text_type;
{
auto event = memory_monitor::event("parse input text");
// (1) check, if the text is cached
if (!cache_file_exists(KEY_TEXT, config)) {
text_type text;
load_vector_from_file(text, file, num_bytes);
if (contains_no_zero_symbol(text, file)) {
append_zero_symbol(text);
store_to_cache(text,KEY_TEXT, config);
}
}
register_cache_file(KEY_TEXT, config);
}
{
// (2) check, if the suffix array is cached
auto event = memory_monitor::event("SA");
if (!cache_file_exists(conf::KEY_SA, config)) {
construct_sa<t_index::alphabet_category::WIDTH>(config);
}
register_cache_file(conf::KEY_SA, config);
}
{
// (3) construct BWT
auto event = memory_monitor::event("BWT");
if (!cache_file_exists(KEY_BWT, config)) {
construct_bwt<t_index::alphabet_category::WIDTH>(config);
}
register_cache_file(KEY_BWT, config);
}
{
// (4) use BWT to construct the CSA
auto event = memory_monitor::event("construct CSA");
t_index tmp(config);
idx.swap(tmp);
}
if (config.delete_files) {
auto event = memory_monitor::event("delete temporary files");
util::delete_all_files(config.file_map);
}
}
