Function _parse_maps

crawl-ref/source/maps.cc:1483–1518

}

static void _parse_maps(const string &s)
{
    string cache_name = get_cache_name(s);
    if (map_files_read.count(cache_name))
        return;

    map_files_read.insert(cache_name);

    if (_load_map_cache(s, cache_name))
        return;

    FILE *dat = fopen_u(s.c_str(), "r");
    if (!dat)
        end(1, true, "Failed to open %s for reading", s.c_str());

#if defined(DEBUG_DIAGNOSTICS) && !(defined(TARGET_COMPILER_VC) && defined(USE_TILE))
    printf("Regenerating des: %s\n", s.c_str());
#endif
    // won't be seen by the user unless they look for it
    mprf(MSGCH_PLAIN, "Regenerating des: %s", s.c_str());

    time_t mtime = file_modtime(dat);
    _reset_map_parser();

    extern int yyparse();
    extern FILE *yyin;
    yyin = dat;

    const size_t file_start = vdefs.size();
    yyparse();
    fclose(dat);

    global_preludes.push_back(lc_global_prelude);

    _write_map_cache(cache_name, file_start, vdefs.size(), mtime);
}

void read_map(const string &file)
{