Function recognize_data_file

tools/comdb2ar/file_info.cpp:271–325

bool recognize_data_file(const std::string& filename,
        bool& is_data_file, bool& is_queue_file, bool& is_queuedb_file,
        std::string& out_table_name)
// Determine if the given filename looks like a table or queue file.  If it does
// then return true and set the is_ flags appropriately, and put the name of the
// object in out_table_name.
{
    size_t dot_pos = filename.find_first_of('.');
    if(dot_pos == std::string::npos) {
        return false;
    }
    const std::string ext(filename.substr(dot_pos + 1));

    // queues are the same whether we are llmeta or not
    if(ext == "queue") {
        is_queue_file = true;
        out_table_name = filename.substr(0, dot_pos);
        return true;
    }
    if (ext == "queuedb") {
        is_queuedb_file = true;
        out_table_name = filename.substr(0, dot_pos);
        return true;
    }

    // comdb2 seems to use metalite.dta even in llmeta mode..
    // copy it to stop it trying to create them on startup.
    // Same seems to apply to things like freerec; conversion to llmeta
    // mode doesn't kill off all these exotic file types so occasionally
    // you come across a db that requires them.
    if(ext == "metalite.dta" ||
            ext == "freerec" ||
            ext == "freerecq" ||
            ext == "meta.dta" ||
            ext == "meta.ix0" ||
            ext == "meta.freerec")
 {
        out_table_name = filename.substr(0, dot_pos);
        is_data_file = true;
        return true;
    }

    // Look for *.data*, *.index and *.blob*
    // Also strip out the 16 digit hex suffix that comes after the table
    // name.
    if(dot_pos > 17 && filename[dot_pos-17] == '_' &&
            (ext == "index" ||
             ext.compare(0, 4, "data") == 0 ||
             ext.compare(0, 4, "blob") == 0)) {
        out_table_name = filename.substr(0, dot_pos - 17);
        is_data_file = true;
        return true;
    }
    return false;
}