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class SchemaIdentifier;
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extern std::string drizzle_tmpdir;
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extern pid_t current_pid;
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static const char hexchars[]= "0123456789abcdef";
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static bool tablename_to_filename(const char *from, char *to, size_t to_length);
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Translate a cursor name to a table name (WL #1324).
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path length on success, 0 on failure
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size_t TableIdentifier::build_table_filename(std::string &in_path, const std::string &in_db, const std::string &in_table_name, bool is_tmp)
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size_t TableIdentifier::build_table_filename(std::string &path, const char *db, const char *table_name, bool is_tmp)
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char dbbuff[FN_REFLEN];
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char tbbuff[FN_REFLEN];
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bool conversion_error= false;
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conversion_error= util::tablename_to_filename(in_db, in_path);
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if (conversion_error)
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errmsg_printf(ERRMSG_LVL_ERROR,
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_("Schema name cannot be encoded and fit within filesystem "
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"name length restrictions."));
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in_path.append(FN_ROOTDIR);
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memset(tbbuff, 0, sizeof(tbbuff));
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if (is_tmp) // It a conversion tmp
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in_path.append(in_table_name);
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strncpy(tbbuff, table_name, sizeof(tbbuff));
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conversion_error= util::tablename_to_filename(in_table_name, in_path);
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conversion_error= tablename_to_filename(table_name, tbbuff, sizeof(tbbuff));
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if (conversion_error)
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errmsg_printf(ERRMSG_LVL_ERROR,
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return in_path.length();
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memset(dbbuff, 0, sizeof(dbbuff));
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conversion_error= tablename_to_filename(db, dbbuff, sizeof(dbbuff));
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if (conversion_error)
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errmsg_printf(ERRMSG_LVL_ERROR,
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_("Schema name cannot be encoded and fit within filesystem "
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"name length restrictions."));
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path.append(FN_ROOTDIR);
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return path.length();
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Translate a table name to a cursor name (WL #1324).
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tablename_to_filename()
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to OUT The cursor name
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to_length The size of the cursor name buffer.
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true if errors happen. false on success.
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static bool tablename_to_filename(const char *from, char *to, size_t to_length)
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for (; *from && length < to_length; length++, from++)
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if ((*from >= '0' && *from <= '9') ||
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(*from >= 'a' && *from <= 'z') ||
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/* OSX defines an extra set of high-bit and multi-byte characters
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that cannot be used on the filesystem. Instead of trying to sort
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those out, we'll just escape encode all high-bit-set chars on OSX.
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It won't really hurt anything - it'll just make some filenames ugly. */
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#if !defined(TARGET_OS_OSX)
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((unsigned char)*from >= 128) ||
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to[length]= tolower(*from);
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if ((*from >= 'A' && *from <= 'Z'))
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to[length]= tolower(*from);
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if (length + 3 >= to_length)
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/* We need to escape this char in a way that can be reversed */
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to[length++]= hexchars[(*from >> 4) & 15];
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to[length]= hexchars[(*from) & 15];
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if (internal::check_if_legal_tablename(to) &&
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length + 4 < to_length)
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memcpy(to + length, "@@@", 4);
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TableIdentifier::TableIdentifier(const drizzled::Table &table) :
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case message::Table::FUNCTION:
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case message::Table::STANDARD:
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assert(path.size() == 0);
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build_table_filename(path, getSchemaName(), table_name, false);
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build_table_filename(path, getSchemaName().c_str(), table_name.c_str(), false);
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case message::Table::INTERNAL:
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assert(path.size() == 0);
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build_table_filename(path, getSchemaName(), table_name, true);
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build_table_filename(path, getSchemaName().c_str(), table_name.c_str(), true);
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case message::Table::TEMPORARY:
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if (path.empty())
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util::insensitive_hash hasher;
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hash_value= hasher(path);
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std::string tb_name(getTableName());
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std::transform(tb_name.begin(), tb_name.end(), tb_name.begin(), ::tolower);
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key.resize(getKeySize());
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size_t key_length= TableIdentifier::createKey(&key[0], *this);
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key.set(getKeySize(), getSchemaName(), tb_name);
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assert(key_length == getKeySize()); // If this is off, then we have a memory issue.
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void TableIdentifier::getSQLPath(std::string &sql_path) const // @todo this is just used for errors, we should find a way to optimize it
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case message::Table::FUNCTION:
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case message::Table::STANDARD:
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sql_path.append(getSchemaName());
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sql_path.append(".");
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sql_path.append(table_name);
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case message::Table::INTERNAL:
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sql_path.append("temporary.");
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sql_path.append(table_name);
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case message::Table::TEMPORARY:
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sql_path.append(getSchemaName());
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sql_path.append(".#");
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sql_path.append(table_name);
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bool TableIdentifier::isValid() const
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if (not SchemaIdentifier::isValid())
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if (table_name.empty())
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if (table_name.size() > NAME_LEN)
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if (table_name.at(table_name.length() -1) == ' ')
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if (table_name.at(0) == '.')
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const CHARSET_INFO * const cs= &my_charset_utf8mb4_general_ci;
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int well_formed_error;
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uint32_t res= cs->cset->well_formed_len(cs, table_name.c_str(), table_name.c_str() + table_name.length(),
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NAME_CHAR_LEN, &well_formed_error);
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if (well_formed_error or table_name.length() != res)
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my_error(ER_WRONG_TABLE_NAME, MYF(0), name.c_str());
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const std::string &TableIdentifier::getSQLPath() // @todo this is just used for errors, we should find a way to optimize it
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if (sql_path.empty())
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case message::Table::FUNCTION:
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case message::Table::STANDARD:
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sql_path.append(getSchemaName());
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sql_path.append(".");
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sql_path.append(table_name);
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case message::Table::INTERNAL:
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sql_path.append("temporary.");
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sql_path.append(table_name);
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case message::Table::TEMPORARY:
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sql_path.append(getSchemaName());
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sql_path.append(".#");
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sql_path.append(table_name);
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message.set_schema(getSchemaName());
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void TableIdentifier::Key::set(size_t resize_arg, const std::string &a, const std::string &b)
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key_buffer.resize(resize_arg);
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std::copy(a.begin(), a.end(), key_buffer.begin());
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std::copy(b.begin(), b.end(), key_buffer.begin() + a.length() + 1);
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util::sensitive_hash hasher;
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hash_value= hasher(key_buffer);
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std::size_t hash_value(TableIdentifier const& b)
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return b.getHashValue();
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std::size_t hash_value(TableIdentifier::Key const& b)
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return b.getHashValue();
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} /* namespace drizzled */