diff options
Diffstat (limited to 'client/mysql.cc')
| -rw-r--r-- | client/mysql.cc | 93 |
1 files changed, 90 insertions, 3 deletions
diff --git a/client/mysql.cc b/client/mysql.cc index 3fa416330e8..ca0584df0cd 100644 --- a/client/mysql.cc +++ b/client/mysql.cc @@ -143,6 +143,7 @@ static my_bool ignore_errors=0,wait_flag=0,quick=0, tty_password= 0, opt_nobeep=0, opt_reconnect=1, opt_secure_auth= 0, default_pager_set= 0, opt_sigint_ignore= 0, + auto_vertical_output= 0, show_warnings= 0, executing_query= 0, interrupted_query= 0, ignore_spaces= 0; static my_bool debug_info_flag, debug_check_flag; @@ -185,6 +186,7 @@ static MEM_ROOT hash_mem_root; static uint prompt_counter; static char delimiter[16]= DEFAULT_DELIMITER; static uint delimiter_length= 1; +unsigned short terminal_width= 80; #ifdef HAVE_SMEM static char *shared_memory_base_name=0; @@ -238,6 +240,8 @@ static const char* construct_prompt(); static char *get_arg(char *line, my_bool get_next_arg); static void init_username(); static void add_int_to_prompt(int toadd); +static int get_result_width(MYSQL_RES *res); +static int get_field_disp_length(MYSQL_FIELD * field); /* A structure which contains information on the commands this program can understand. */ @@ -1065,6 +1069,10 @@ static void mysql_end_timer(ulong start_time,char *buff); static void nice_time(double sec,char *buff,bool part_second); extern "C" sig_handler mysql_end(int sig); extern "C" sig_handler handle_sigint(int sig); +#if defined(HAVE_TERMIOS_H) && defined(GWINSZ_IN_SYS_IOCTL) +static sig_handler window_resize(int sig); +#endif + int main(int argc,char *argv[]) { @@ -1144,8 +1152,8 @@ int main(int argc,char *argv[]) if (sql_connect(current_host,current_db,current_user,opt_password, opt_silent)) { - quick=1; // Avoid history - status.exit_status=1; + quick= 1; // Avoid history + status.exit_status= 1; mysql_end(-1); } if (!status.batch) @@ -1157,6 +1165,13 @@ int main(int argc,char *argv[]) signal(SIGINT, handle_sigint); // Catch SIGINT to clean up signal(SIGQUIT, mysql_end); // Catch SIGQUIT to clean up +#if defined(HAVE_TERMIOS_H) && defined(GWINSZ_IN_SYS_IOCTL) + /* Readline will call this if it installs a handler */ + signal(SIGWINCH, window_resize); + /* call the SIGWINCH handler to get the default term width */ + window_resize(0); +#endif + put_info("Welcome to the MySQL monitor. Commands end with ; or \\g.", INFO_INFO); sprintf((char*) glob_buffer.ptr(), @@ -1329,6 +1344,16 @@ err: } +#if defined(HAVE_TERMIOS_H) && defined(GWINSZ_IN_SYS_IOCTL) +sig_handler window_resize(int sig) +{ + struct winsize window_size; + + if (ioctl(fileno(stdin), TIOCGWINSZ, &window_size) == 0) + terminal_width= window_size.ws_col; +} +#endif + static struct my_option my_long_options[] = { {"help", '?', "Display this help and exit.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, @@ -1346,6 +1371,9 @@ static struct my_option my_long_options[] = {"no-auto-rehash", 'A', "No automatic rehashing. One has to use 'rehash' to get table and field completion. This gives a quicker start of mysql and disables rehashing on reconnect. WARNING: options deprecated; use --disable-auto-rehash instead.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}, + {"auto-vertical-output", OPT_AUTO_VERTICAL_OUTPUT, + "Automatically switch to vertical output mode if the result is wider than the terminal width.", + (uchar**) &auto_vertical_output, (uchar**) &auto_vertical_output, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0}, {"batch", 'B', "Don't use history file. Disable interactive behavior. (Enables --silent)", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}, {"character-sets-dir", OPT_CHARSETS_DIR, @@ -3052,7 +3080,7 @@ com_go(String *buffer,char *line __attribute__((unused))) print_table_data_html(result); else if (opt_xml) print_table_data_xml(result); - else if (vertical) + else if (vertical || (auto_vertical_output && (terminal_width < get_result_width(result)))) print_table_data_vertically(result); else if (opt_silent && verbose <= 2 && !output_tables) print_tab_data(result); @@ -3383,6 +3411,65 @@ print_table_data(MYSQL_RES *result) my_afree((uchar*) num_flag); } +/** + Return the length of a field after it would be rendered into text. + + This doesn't know or care about multibyte characters. Assume we're + using such a charset. We can't know that all of the upcoming rows + for this column will have bytes that each render into some fraction + of a character. It's at least possible that a row has bytes that + all render into one character each, and so the maximum length is + still the number of bytes. (Assumption 1: This can't be better + because we can never know the number of characters that the DB is + going to send -- only the number of bytes. 2: Chars <= Bytes.) + + @param field Pointer to a field to be inspected + + @returns number of character positions to be used, at most +*/ +static int get_field_disp_length(MYSQL_FIELD *field) +{ + uint length= column_names ? field->name_length : 0; + + if (quick) + length= max(length, field->length); + else + length= max(length, field->max_length); + + if (length < 4 && !IS_NOT_NULL(field->flags)) + length= 4; /* Room for "NULL" */ + + return length; +} + +/** + For a new result, return the max number of characters that any + upcoming row may return. + + @param result Pointer to the result to judge + + @returns The max number of characters in any row of this result +*/ +static int get_result_width(MYSQL_RES *result) +{ + unsigned int len= 0; + MYSQL_FIELD *field; + MYSQL_FIELD_OFFSET offset; + +#ifndef DBUG_OFF + offset= mysql_field_tell(result); + DBUG_ASSERT(offset == 0); +#else + offset= 0; +#endif + + while ((field= mysql_fetch_field(result)) != NULL) + len+= get_field_disp_length(field) + 3; /* plus bar, space, & final space */ + + (void) mysql_field_seek(result, offset); + + return len + 1; /* plus final bar. */ +} static void tee_print_sized_data(const char *data, unsigned int data_length, unsigned int total_bytes_to_send, bool right_justified) |