/* Copyright (C) 2000-2003 MySQL AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

/* mysql command tool
 * Commands compatible with mSQL by David J. Hughes
 *
 * Written by:
 *   Michael 'Monty' Widenius
 *   Andi Gutmans  <andi@zend.com>
 *   Zeev Suraski  <zeev@zend.com>
 *   Jani Tolonen  <jani@mysql.com>
 *   Matt Wagner   <matt@mysql.com>
 *   Jeremy Cole   <jcole@mysql.com>
 *   Tonu Samuel   <tonu@mysql.com>
 *   Harrison Fisk <hcfisk@buffalo.edu>
 *
 **/

#include "client_priv.h"
#include <m_ctype.h>
#include <stdarg.h>
#include <my_dir.h>
#ifndef __GNU_LIBRARY__
#define __GNU_LIBRARY__		      // Skip warnings in getopt.h
#endif
#include "my_readline.h"
#include <signal.h>
#include <violite.h>

const char *VER= "12.22";

/* Don't try to make a nice table if the data is too big */
#define MAX_COLUMN_LENGTH	     1024

gptr sql_alloc(unsigned size);	     // Don't use mysqld alloc for these
void sql_element_free(void *ptr);
#include "sql_string.h"

extern "C" {
#if defined(HAVE_CURSES_H) && defined(HAVE_TERM_H)
#include <curses.h>
#include <term.h>
#else
#if defined(HAVE_TERMIOS_H)
#include <termios.h>
#include <unistd.h>
#elif defined(HAVE_TERMBITS_H)
#include <termbits.h>
#elif defined(HAVE_ASM_TERMBITS_H) && (!defined __GLIBC__ || !(__GLIBC__ > 2 || __GLIBC__ == 2 && __GLIBC_MINOR__ > 0))
#include <asm/termbits.h>		// Standard linux
#endif
#undef VOID
#if defined(HAVE_TERMCAP_H)
#include <termcap.h>
#else
#ifdef HAVE_CURSES_H
#include <curses.h>
#endif
#undef SYSV				// hack to avoid syntax error
#ifdef HAVE_TERM_H
#include <term.h>
#endif
#endif
#endif

#undef bcmp				// Fix problem with new readline
#if defined( __WIN__) || defined(OS2)
#include <conio.h>
#elif !defined(__NETWARE__)
#include <readline/readline.h>
#define HAVE_READLINE
#endif
  //int vidattr(long unsigned int attrs);	// Was missing in sun curses
}

#if !defined(HAVE_VIDATTR)
#undef vidattr
#define vidattr(A) {}			// Can't get this to work
#endif

#ifdef FN_NO_CASE_SENCE
#define cmp_database(A,B) my_strcasecmp((A),(B))
#else
#define cmp_database(A,B) strcmp((A),(B))
#endif

#if !defined( __WIN__) && !defined( OS2) && !defined(__NETWARE__) && (!defined(HAVE_mit_thread) || !defined(THREAD))
#define USE_POPEN
#endif

#include "completion_hash.h"

#define PROMPT_CHAR '\\'

typedef struct st_status
{
  int exit_status;
  ulong query_start_line;
  char *file_name;
  LINE_BUFFER *line_buff;
  bool batch,add_to_history;
} STATUS;


static HashTable ht;
static char **defaults_argv;

enum enum_info_type { INFO_INFO,INFO_ERROR,INFO_RESULT};
typedef enum enum_info_type INFO_TYPE;

static MYSQL mysql;			/* The connection */
static my_bool info_flag=0,ignore_errors=0,wait_flag=0,quick=0,
               connected=0,opt_raw_data=0,unbuffered=0,output_tables=0,
	       rehash=1,skip_updates=0,safe_updates=0,one_database=0,
	       opt_compress=0, using_opt_local_infile=0,
	       vertical=0, line_numbers=1, column_names=1,opt_html=0,
               opt_xml=0,opt_nopager=1, opt_outfile=0, named_cmds= 0,
               tty_password= 0, opt_nobeep=0;
static ulong opt_max_allowed_packet, opt_net_buffer_length;
static uint verbose=0,opt_silent=0,opt_mysql_port=0, opt_local_infile=0;
static my_string opt_mysql_unix_port=0;
static int connect_flag=CLIENT_INTERACTIVE;
static char *current_host,*current_db,*current_user=0,*opt_password=0,
            *current_prompt=0, *default_charset;
static char *histfile;
static String glob_buffer,old_buffer;
static String processed_prompt;
static char *full_username=0,*part_username=0,*default_prompt=0;
static int wait_time = 5;
static STATUS status;
static ulong select_limit,max_join_size,opt_connect_timeout=0;
static char mysql_charsets_dir[FN_REFLEN+1];
static const char *xmlmeta[] = {
  "&", "&amp;",
  "<", "&lt;",
  0, 0
};
static const char *day_names[]={"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
static const char *month_names[]={"Jan","Feb","Mar","Apr","May","Jun","Jul",
			    "Aug","Sep","Oct","Nov","Dec"};
static char default_pager[FN_REFLEN];
static char pager[FN_REFLEN], outfile[FN_REFLEN];
static FILE *PAGER, *OUTFILE;
static MEM_ROOT hash_mem_root;
static uint prompt_counter;

#include "sslopt-vars.h"

#ifndef DBUG_OFF
const char *default_dbug_option="d:t:o,/tmp/mysql.trace";
#endif

void tee_fprintf(FILE *file, const char *fmt, ...);
void tee_fputs(const char *s, FILE *file);
void tee_puts(const char *s, FILE *file);
void tee_putc(int c, FILE *file);
/* The names of functions that actually do the manipulation. */
static int get_options(int argc,char **argv);
static int com_quit(String *str,char*),
	   com_go(String *str,char*), com_ego(String *str,char*),
	   com_print(String *str,char*),
	   com_help(String *str,char*), com_clear(String *str,char*),
	   com_connect(String *str,char*), com_status(String *str,char*),
	   com_use(String *str,char*), com_source(String *str, char*),
	   com_rehash(String *str, char*), com_tee(String *str, char*),
           com_notee(String *str, char*),
           com_prompt(String *str, char*);

#ifdef USE_POPEN
static int com_nopager(String *str, char*), com_pager(String *str, char*),
           com_edit(String *str,char*), com_shell(String *str, char *);
#endif

static int read_lines(bool execute_commands);
static int sql_connect(char *host,char *database,char *user,char *password,
		       uint silent);
static int put_info(const char *str,INFO_TYPE info,uint error=0);
static void safe_put_field(const char *pos,ulong length);
static void xmlencode_print(const char *src, uint length);
static void init_pager();
static void end_pager();
static void init_tee(const char *);
static void end_tee();
static const char* construct_prompt();
static void init_username();
static void add_int_to_prompt(int toadd);

/* A structure which contains information on the commands this program
   can understand. */

typedef struct {
  const char *name;		/* User printable name of the function. */
  char cmd_char;		/* msql command character */
  int (*func)(String *str,char *); /* Function to call to do the job. */
  bool takes_params;		/* Max parameters for command */
  const char *doc;		/* Documentation for this function.  */
} COMMANDS;

static COMMANDS commands[] = {
  { "help",   'h', com_help,   0, "Display this help." },
  { "?",      '?', com_help,   0, "Synonym for `help'." },
  { "clear",  'c', com_clear,  0, "Clear command."},
  { "connect",'r', com_connect,1,
    "Reconnect to the server. Optional arguments are db and host." },
#ifdef USE_POPEN
  { "edit",   'e', com_edit,   0, "Edit command with $EDITOR."},
#endif
  { "ego",    'G', com_ego,    0,
    "Send command to mysql server, display result vertically."},
  { "exit",   'q', com_quit,   0, "Exit mysql. Same as quit."},
  { "go",     'g', com_go,     0, "Send command to mysql server." },
#ifdef USE_POPEN
  { "nopager",'n', com_nopager,0, "Disable pager, print to stdout." },
#endif
  { "notee",  't', com_notee,  0, "Don't write into outfile." },
#ifdef USE_POPEN
  { "pager",  'P', com_pager,  1, 
    "Set PAGER [to_pager]. Print the query results via PAGER." },
#endif
  { "print",  'p', com_print,  0, "Print current command." },
  { "prompt", 'R', com_prompt, 1, "Change your mysql prompt."},
  { "quit",   'q', com_quit,   0, "Quit mysql." },
  { "rehash", '#', com_rehash, 0, "Rebuild completion hash." },
  { "source", '.', com_source, 1,
    "Execute a SQL script file. Takes a file name as an argument."},
  { "status", 's', com_status, 0, "Get status information from the server."},
#ifdef USE_POPEN
  { "system", '!', com_shell,  1, "Execute a system shell command."},
#endif
  { "tee",    'T', com_tee,    1, 
    "Set outfile [to_outfile]. Append everything into given outfile." },
  { "use",    'u', com_use,    1,
    "Use another database. Takes database name as argument." },

  /* Get bash-like expansion for some commands */
  { "create table",     0, 0, 0, ""},
  { "create database",  0, 0, 0, ""},
  { "drop",             0, 0, 0, ""},
  { "select",           0, 0, 0, ""},
  { "insert",           0, 0, 0, ""},
  { "replace",          0, 0, 0, ""},
  { "update",           0, 0, 0, ""},
  { "delete",           0, 0, 0, ""},
  { "explain",          0, 0, 0, ""},
  { "show databases",   0, 0, 0, ""},
  { "show fields from", 0, 0, 0, ""},
  { "show keys from",   0, 0, 0, ""},
  { "show tables",      0, 0, 0, ""},
  { "load data from",   0, 0, 0, ""},
  { "alter table",      0, 0, 0, ""},
  { "set option",       0, 0, 0, ""},
  { "lock tables",      0, 0, 0, ""},
  { "unlock tables",    0, 0, 0, ""},
  { (char *)NULL,       0, 0, 0, ""}
};

static const char *load_default_groups[]= { "mysql","client",0 };
static const char *server_default_groups[]=
{ "server", "embedded", "mysql_SERVER", 0 };

#ifdef HAVE_READLINE
extern "C" void add_history(char *command); /* From readline directory */
extern "C" int read_history(char *command);
extern "C" int write_history(char *command);
static void initialize_readline (char *name);
#endif

static COMMANDS *find_command (char *name,char cmd_name);
static bool add_line(String &buffer, char *line, char *in_string, 
                     my_bool *in_comment);
static void remove_cntrl(String &buffer);
static void print_table_data(MYSQL_RES *result);
static void print_table_data_html(MYSQL_RES *result);
static void print_table_data_xml(MYSQL_RES *result);
static void print_tab_data(MYSQL_RES *result);
static void print_table_data_vertically(MYSQL_RES *result);
static ulong start_timer(void);
static void end_timer(ulong start_time,char *buff);
static void mysql_end_timer(ulong start_time,char *buff);
static void nice_time(double sec,char *buff,bool part_second);
static sig_handler mysql_end(int sig);


int main(int argc,char *argv[])
{
  char buff[80];

  MY_INIT(argv[0]);
  DBUG_ENTER("main");
  DBUG_PROCESS(argv[0]);

  default_prompt = my_strdup(getenv("MYSQL_PS1") ? 
			     getenv("MYSQL_PS1") : 
			     "mysql> ",MYF(MY_WME));
  current_prompt = my_strdup(default_prompt,MYF(MY_WME));
  prompt_counter=0;

  outfile[0]=0;			// no (default) outfile
  strmov(pager, "stdout");	// the default, if --pager wasn't given
  {
    char *tmp=getenv("PAGER");
    if (tmp)
      strmov(default_pager,tmp);
  }
  if (!isatty(0) || !isatty(1))
  {
    status.batch=1; opt_silent=1;
    ignore_errors=0;
  }
  else
    status.add_to_history=1;
  status.exit_status=1;
  load_defaults("my",load_default_groups,&argc,&argv);
  defaults_argv=argv;
  if (get_options(argc, (char **) argv))
  {
    free_defaults(defaults_argv);
    my_end(0);
    exit(1);
  }
  if (status.batch && !status.line_buff &&
      !(status.line_buff=batch_readline_init(opt_max_allowed_packet+512,stdin)))
  {
    free_defaults(defaults_argv);
    exit(1);
  }
  glob_buffer.realloc(512);
  mysql_server_init(0, NULL, (char**) server_default_groups);
  completion_hash_init(&ht, 128);
  init_alloc_root(&hash_mem_root, 16384, 0);
  bzero((char*) &mysql, sizeof(mysql));
  if (sql_connect(current_host,current_db,current_user,opt_password,
		  opt_silent))
  {
    quick=1;					// Avoid history
    status.exit_status=1;
    mysql_end(-1);
  }
  if (!status.batch)
    ignore_errors=1;				// Don't abort monitor
  signal(SIGINT, mysql_end);			// Catch SIGINT to clean up

  /*
    Run in interactive mode like the ingres/postgres monitor
  */

  put_info("Welcome to the MySQL monitor.  Commands end with ; or \\g.",
	   INFO_INFO);
  sprintf((char*) glob_buffer.ptr(),
	  "Your MySQL connection id is %lu to server version: %s\n",
	  mysql_thread_id(&mysql),mysql_get_server_info(&mysql));
  put_info((char*) glob_buffer.ptr(),INFO_INFO);

#ifdef HAVE_READLINE
  initialize_readline(my_progname);
  if (!status.batch && !quick && !opt_html && !opt_xml)
  {
    /* read-history from file, default ~/.mysql_history*/
    if (getenv("MYSQL_HISTFILE"))
      histfile=my_strdup(getenv("MYSQL_HISTFILE"),MYF(MY_WME));
    else if (getenv("HOME"))
    {
      histfile=(char*) my_malloc((uint) strlen(getenv("HOME"))
				 + (uint) strlen("/.mysql_history")+2,
				 MYF(MY_WME));
      if (histfile)
	sprintf(histfile,"%s/.mysql_history",getenv("HOME"));
    }
    if (histfile)
    {
      if (verbose)
	tee_fprintf(stdout, "Reading history-file %s\n",histfile);
      read_history(histfile);
    }
  }
#endif
  sprintf(buff, 
	  "Type 'help;' or '\\h' for help. Type '\\c' to clear the buffer.\n");
  put_info(buff,INFO_INFO);
  status.exit_status=read_lines(1);		// read lines and execute them
  if (opt_outfile)
    end_tee();
  mysql_end(0);
#ifndef _lint
  DBUG_RETURN(0);				// Keep compiler happy
#endif
}

sig_handler mysql_end(int sig)
{
  mysql_close(&mysql);
#ifdef HAVE_READLINE
  if (!status.batch && !quick && !opt_html && !opt_xml)
  {
    /* write-history */
    if (verbose)
      tee_fprintf(stdout, "Writing history-file %s\n",histfile);
    write_history(histfile);
  }
  batch_readline_end(status.line_buff);
  completion_hash_free(&ht);
  free_root(&hash_mem_root,MYF(0));

#endif
  if (sig >= 0)
    put_info(sig ? "Aborted" : "Bye", INFO_RESULT);
  glob_buffer.free();
  old_buffer.free();
  processed_prompt.free();
  my_free(opt_password,MYF(MY_ALLOW_ZERO_PTR));
  my_free(opt_mysql_unix_port,MYF(MY_ALLOW_ZERO_PTR));
  my_free(histfile,MYF(MY_ALLOW_ZERO_PTR));
  my_free(current_db,MYF(MY_ALLOW_ZERO_PTR));
  my_free(current_host,MYF(MY_ALLOW_ZERO_PTR));
  my_free(current_user,MYF(MY_ALLOW_ZERO_PTR));
  my_free(full_username,MYF(MY_ALLOW_ZERO_PTR));
  my_free(part_username,MYF(MY_ALLOW_ZERO_PTR));
  my_free(default_prompt,MYF(MY_ALLOW_ZERO_PTR));
  my_free(current_prompt,MYF(MY_ALLOW_ZERO_PTR));
  mysql_server_end();
  free_defaults(defaults_argv);
  my_end(info_flag ? MY_CHECK_ERROR | MY_GIVE_INFO : 0);
  exit(status.exit_status);
}


static struct my_option my_long_options[] =
{
  {"help", '?', "Display this help and exit.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
   0, 0, 0, 0, 0},
  {"auto-rehash", OPT_AUTO_REHASH,
   "Enable automatic rehashing. One doesn't need to use 'rehash' to get table and field completion, but startup and reconnecting may take a longer time. Disable with --disable-auto-rehash.",
   (gptr*) &rehash, (gptr*) &rehash, 0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
  {"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},
  {"batch", 'B',
   "Print results with a tab as separator, each row on new line. Doesn't use history file.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"character-sets-dir", OPT_CHARSETS_DIR,
   "Directory where character sets are.", (gptr*) &charsets_dir,
   (gptr*) &charsets_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"default-character-set", OPT_DEFAULT_CHARSET,
   "Set the default character set.", (gptr*) &default_charset,
   (gptr*) &default_charset, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"compress", 'C', "Use compression in server/client protocol.",
   (gptr*) &opt_compress, (gptr*) &opt_compress, 0, GET_BOOL, NO_ARG, 0, 0, 0,
   0, 0, 0},
#ifndef DBUG_OFF
  {"debug", '#', "Output debug log.", (gptr*) &default_dbug_option,
   (gptr*) &default_dbug_option, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"database", 'D', "Database to use.", (gptr*) &current_db,
   (gptr*) &current_db, 0, GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"execute", 'e', "Execute command and quit. (Output like with --batch).", 0,
   0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"vertical", 'E', "Print the output of a query (rows) vertically.",
   (gptr*) &vertical, (gptr*) &vertical, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
   0},
  {"force", 'f', "Continue even if we get an sql error.",
   (gptr*) &ignore_errors, (gptr*) &ignore_errors, 0, GET_BOOL, NO_ARG, 0, 0,
   0, 0, 0, 0},
  {"no-named-commands", 'g',
   "Named commands are disabled. Use \\* form only, or use named commands only in the beginning of a line ending with a semicolon (;) Since version 10.9 the client now starts with this option ENABLED by default! Disable with '-G'. Long format commands still work from the first line. WARNING: option deprecated; use --disable-named-commands instead.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"named-commands", 'G',
   "Enable named commands. Named commands mean this program's internal commands; see mysql> help . When enabled, the named commands can be used from any line of the query, otherwise only from the first line, before an enter. Disable with --disable-named-commands. This option is disabled by default.",
   (gptr*) &named_cmds, (gptr*) &named_cmds, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
   0, 0},
  {"ignore-spaces", 'i', "Ignore space after function names.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"local-infile", OPT_LOCAL_INFILE, "Enable/disable LOAD DATA LOCAL INFILE.",
   (gptr*) &opt_local_infile,
   (gptr*) &opt_local_infile, 0, GET_BOOL, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"no-beep", 'b', "Turn off beep on error.", (gptr*) &opt_nobeep,
   (gptr*) &opt_nobeep, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0}, 
  {"host", 'h', "Connect to host.", (gptr*) &current_host,
   (gptr*) &current_host, 0, GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"html", 'H', "Produce HTML output.", (gptr*) &opt_html, (gptr*) &opt_html,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"xml", 'X', "Produce XML output", (gptr*) &opt_xml, (gptr*) &opt_xml, 0,
   GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"line-numbers", OPT_LINE_NUMBERS, "Write line numbers for errors.",
   (gptr*) &line_numbers, (gptr*) &line_numbers, 0, GET_BOOL,
   NO_ARG, 1, 0, 0, 0, 0, 0},  
  {"skip-line-numbers", 'L', "Don't write line number for errors. WARNING: -L is deprecated, use long version of this option instead.", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef USE_POPEN
  {"no-pager", OPT_NOPAGER,
   "Disable pager and print to stdout. See interactive help (\\h) also. WARNING: option deprecated; use --disable-pager instead.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"no-tee", OPT_NOTEE, "Disable outfile. See interactive help (\\h) also. WARNING: option deprecated; use --disable-tee instead", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"unbuffered", 'n', "Flush buffer after each query.", (gptr*) &unbuffered,
   (gptr*) &unbuffered, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"column-names", OPT_COLUMN_NAMES, "Write column names in results.",
   (gptr*) &column_names, (gptr*) &column_names, 0, GET_BOOL,
   NO_ARG, 1, 0, 0, 0, 0, 0},
  {"skip-column-names", 'N',
   "Don't write column names in results. WARNING: -N is deprecated, use long version of this options instead.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"set-variable", 'O',
   "Change the value of a variable. Please note that this option is deprecated; you can set variables directly with --variable-name=value.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"one-database", 'o',
   "Only update the default database. This is useful for skipping updates to other database in the update log.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef USE_POPEN
  {"pager", OPT_PAGER,
   "Pager to use to display results. If you don't supply an option the default pager is taken from your ENV variable PAGER. Valid pagers are less, more, cat [> filename], etc. See interactive help (\\h) also. This option does not work in batch mode.",
   0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"password", 'p',
   "Password to use when connecting to server. If password is not given it's asked from the tty.",
   0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
#ifdef __WIN__
  {"pipe", 'W', "Use named pipes to connect to server.", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"port", 'P', "Port number to use for connection.", (gptr*) &opt_mysql_port,
   (gptr*) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, MYSQL_PORT, 0, 0, 0, 0,
   0},
  {"prompt", OPT_PROMPT, "Set the mysql prompt to this value.",
   (gptr*) &current_prompt, (gptr*) &current_prompt, 0, GET_STR_ALLOC,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"quick", 'q',
   "Don't cache result, print it row by row. This may slow down the server if the output is suspended. Doesn't use history file. ",
   (gptr*) &quick, (gptr*) &quick, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"raw", 'r', "Write fields without conversion. Used with --batch",
   (gptr*) &opt_raw_data, (gptr*) &opt_raw_data, 0, GET_BOOL, NO_ARG, 0, 0, 0,
   0, 0, 0},
  {"silent", 's', "Be more silent.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0,
   0, 0},
  {"socket", 'S', "Socket file to use for connection.",
   (gptr*) &opt_mysql_unix_port, (gptr*) &opt_mysql_unix_port, 0, GET_STR_ALLOC,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#include "sslopt-longopts.h"
  {"table", 't', "Output in table format.", (gptr*) &output_tables,
   (gptr*) &output_tables, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"debug-info", 'T', "Print some debug info at exit.", (gptr*) &info_flag,
   (gptr*) &info_flag, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"tee", OPT_TEE,
   "Append everything into outfile. See interactive help (\\h) also. Does not work in batch mode.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#ifndef DONT_ALLOW_USER_CHANGE
  {"user", 'u', "User for login if not current user.", (gptr*) &current_user,
   (gptr*) &current_user, 0, GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"safe-updates", 'U', "Only allow UPDATE and DELETE that uses keys.",
   (gptr*) &safe_updates, (gptr*) &safe_updates, 0, GET_BOOL, OPT_ARG, 0, 0,
   0, 0, 0, 0},
  {"i-am-a-dummy", 'U', "Synonym for option --safe-updates, -U.",
   (gptr*) &safe_updates, (gptr*) &safe_updates, 0, GET_BOOL, OPT_ARG, 0, 0,
   0, 0, 0, 0},
  {"verbose", 'v', "Write more. (-v -v -v gives the table output format)", 0,
   0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"version", 'V', "Output version information and exit.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"wait", 'w', "Wait and retry if connection is down.", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"connect_timeout", OPT_CONNECT_TIMEOUT, "", (gptr*) &opt_connect_timeout,
   (gptr*) &opt_connect_timeout, 0, GET_ULONG, REQUIRED_ARG, 0, 0, 3600*12, 0,
   0, 1},
  {"max_allowed_packet", OPT_MAX_ALLOWED_PACKET, "",
   (gptr*) &opt_max_allowed_packet, (gptr*) &opt_max_allowed_packet, 0, GET_ULONG,
   REQUIRED_ARG, 16 *1024L*1024L, 4096, (longlong) 2*1024L*1024L*1024L,
   MALLOC_OVERHEAD, 1024, 0},
  {"net_buffer_length", OPT_NET_BUFFER_LENGTH, "",
   (gptr*) &opt_net_buffer_length, (gptr*) &opt_net_buffer_length, 0, GET_ULONG,
   REQUIRED_ARG, 16384, 1024, 512*1024*1024L, MALLOC_OVERHEAD, 1024, 0},
  {"select_limit", OPT_SELECT_LIMIT, "", (gptr*) &select_limit,
   (gptr*) &select_limit, 0, GET_ULONG, REQUIRED_ARG, 1000L, 1, ~0L, 0, 1, 0},
  {"max_join_size", OPT_MAX_JOIN_SIZE, "", (gptr*) &max_join_size,
   (gptr*) &max_join_size, 0, GET_ULONG, REQUIRED_ARG, 1000000L, 1, ~0L, 0, 1,
   0},
  { 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
};


static void usage(int version)
{
  /* Divert all help information on NetWare to logger screen. */
#ifdef __NETWARE__
#define printf	consoleprintf
#endif
  printf("%s  Ver %s Distrib %s, for %s (%s)\n",
	 my_progname, VER, MYSQL_SERVER_VERSION, SYSTEM_TYPE, MACHINE_TYPE);
  if (version)
    return;
  printf("\
Copyright (C) 2002 MySQL AB\n\
This software comes with ABSOLUTELY NO WARRANTY. This is free software,\n\
and you are welcome to modify and redistribute it under the GPL license\n");
  printf("Usage: %s [OPTIONS] [database]\n", my_progname);
  my_print_help(my_long_options);
  print_defaults("my", load_default_groups);
  my_print_variables(my_long_options);
  NETWARE_SET_SCREEN_MODE(1);
#ifdef __NETWARE__
#undef printf
#endif
}


static my_bool
get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
	       char *argument)
{
  switch(optid) {
  case OPT_CHARSETS_DIR:
    strmov(mysql_charsets_dir, argument);
    charsets_dir = mysql_charsets_dir;
    break;
  case OPT_LOCAL_INFILE:
    using_opt_local_infile=1;
    break;
  case OPT_TEE:
    if (argument == disabled_my_option)
    {
      if (opt_outfile)
	end_tee();
    }
    else
      init_tee(argument);
    break;
  case OPT_NOTEE:
    printf("WARNING: option deprecated; use --disable-tee instead.\n");
    if (opt_outfile)
      end_tee();
    break;
  case OPT_PAGER:
    if (argument == disabled_my_option)
      opt_nopager= 1;
    else
    {
      opt_nopager= 0;
      if (argument)
	strmov(pager, argument);
      else
	strmov(pager, default_pager);
      strmov(default_pager, pager);
    }
    break;
  case OPT_NOPAGER:
    printf("WARNING: option deprecated; use --disable-pager instead.\n");
    opt_nopager= 1;
    break;
  case 'A':
    rehash= 0;
    break;
  case 'N':
    column_names= 0;
    break;
  case 'e':
    status.batch= 1;
    status.add_to_history= 0;
    batch_readline_end(status.line_buff);	// If multiple -e
    if (!(status.line_buff= batch_readline_command(argument)))
      return 1;
    ignore_errors= 0;
    break;
  case 'o':
    if (argument == disabled_my_option)
      one_database= 0;
    else
      one_database= skip_updates= 1;
    break;
  case 'p':
    if (argument == disabled_my_option)
      argument= (char*) "";			// Don't require password
    if (argument)
    {
      char *start= argument;
      my_free(opt_password, MYF(MY_ALLOW_ZERO_PTR));
      opt_password= my_strdup(argument, MYF(MY_FAE));
      while (*argument) *argument++= 'x';		// Destroy argument
      if (*start)
	start[1]=0 ;
      tty_password= 0;
    }
    else
      tty_password= 1;
    break;
  case '#':
    DBUG_PUSH(argument ? argument : default_dbug_option);
    info_flag= 1;
    break;
  case 's':
    if (argument == disabled_my_option)
      opt_silent= 0;
    else
      opt_silent++;
    break;
  case 'v':
    if (argument == disabled_my_option)
      verbose= 0;
    else
      verbose++;
    break;
  case 'B':
    if (!status.batch)
    {
      status.batch= 1;
      status.add_to_history= 0;
      opt_silent++;				// more silent
    }
    break;
  case 'W':
#ifdef __WIN__
    my_free(opt_mysql_unix_port, MYF(MY_ALLOW_ZERO_PTR));
    opt_mysql_unix_port= my_strdup(MYSQL_NAMEDPIPE, MYF(0));
#endif
    break;
#include <sslopt-case.h>
  case 'V':
    usage(1);
    exit(0);
  case 'I':
  case '?':
    usage(0);
    exit(0);
  }
  return 0;
}


static int get_options(int argc, char **argv)
{
  char *tmp, *pagpoint;
  int ho_error;
  MYSQL_PARAMETERS *mysql_params= mysql_get_parameters();

  tmp= (char *) getenv("MYSQL_HOST");
  if (tmp)
    current_host= my_strdup(tmp, MYF(MY_WME));

  pagpoint= getenv("PAGER");
  if (!((char*) (pagpoint)))
  {
    strmov(pager, "stdout");
    opt_nopager= 1;
  }
  else
    strmov(pager, pagpoint);
  strmov(default_pager, pager);

  opt_max_allowed_packet= *mysql_params->p_max_allowed_packet;
  opt_net_buffer_length= *mysql_params->p_net_buffer_length;

  if ((ho_error=handle_options(&argc, &argv, my_long_options, get_one_option)))
    exit(ho_error);

  *mysql_params->p_max_allowed_packet= opt_max_allowed_packet;
  *mysql_params->p_net_buffer_length= opt_net_buffer_length;

  if (status.batch) /* disable pager and outfile in this case */
  {
    strmov(default_pager, "stdout");
    strmov(pager, "stdout");
    opt_nopager= 1;
    opt_outfile= 0;
    connect_flag= 0; /* Not in interactive mode */
  }
  if (default_charset)
  {
    if (set_default_charset_by_name(default_charset, MYF(MY_WME)))
      exit(1);
  }
  if (argc > 1)
  {
    usage(0);
    exit(1);
  }
  if (argc == 1)
  {
    skip_updates= 0;
    my_free(current_db, MYF(MY_ALLOW_ZERO_PTR));
    current_db= my_strdup(*argv, MYF(MY_WME));
  }
  if (tty_password)
    opt_password= get_tty_password(NullS);
  return(0);
}

static int read_lines(bool execute_commands)
{
#if defined( __WIN__) || defined(OS2) || defined(__NETWARE__)
  char linebuffer[254];
#endif
  char	*line;
  char	in_string=0;
  my_bool in_comment= 0;
  ulong line_number=0;
  COMMANDS *com;
  status.exit_status=1;

  for (;;)
  {
    if (status.batch || !execute_commands)
    {
      line=batch_readline(status.line_buff);
      line_number++;
      if (!glob_buffer.length())
	status.query_start_line=line_number;
    }
    else
    {
      char *prompt= (char*) (glob_buffer.is_empty() ? construct_prompt() :
			     !in_string ? "    -> " :
			     in_string == '\'' ?
			     "    '> " : (in_string == '`' ?
			     "    `> " :
			     "    \"> "));
      if (opt_outfile && glob_buffer.is_empty())
	fflush(OUTFILE);

#if defined( __WIN__) || defined(OS2) || defined(__NETWARE__)
      tee_fputs(prompt, stdout);
#ifdef __NETWARE__
      line=fgets(linebuffer, sizeof(linebuffer)-1, stdin);
      /* Remove the '\n' */
      if (line)
      {
        char *p = strrchr(line, '\n');
        if (p != NULL)
          *p = '\0';
      }
#else
      linebuffer[0]= (char) sizeof(linebuffer);
      line= _cgets(linebuffer);
#endif /* __NETWARE__ */
#else
      if (opt_outfile)
	fputs(prompt, OUTFILE);
      line= readline(prompt);
#endif /* defined( __WIN__) || defined(OS2) || defined(__NETWARE__) */

      /*
        When Ctrl+d or Ctrl+z is pressed, the line may be NULL on some OS
        which may cause coredump.
      */
      if (opt_outfile && line)
	fprintf(OUTFILE, "%s\n", line);
    }
    if (!line)					// End of file
    {
      status.exit_status=0;
      break;
    }
    if (!in_string && (line[0] == '#' ||
		       (line[0] == '-' && line[1] == '-') ||
		       line[0] == 0))
      continue;					// Skip comment lines

    /*
      Check if line is a mysql command line
      (We want to allow help, print and clear anywhere at line start
    */
    if (execute_commands && (named_cmds || glob_buffer.is_empty()) 
	&& !in_string && (com=find_command(line,0)))
    {
      if ((*com->func)(&glob_buffer,line) > 0)
	break;
      if (glob_buffer.is_empty())		// If buffer was emptied
	in_string=0;
#ifdef HAVE_READLINE
      if (status.add_to_history)
	add_history(line);
#endif
      continue;
    }
    if (add_line(glob_buffer, line, &in_string, &in_comment))
      break;
  }
  /* if in batch mode, send last query even if it doesn't end with \g or go */

  if ((status.batch || !execute_commands) && !status.exit_status)
  {
    remove_cntrl(glob_buffer);
    if (!glob_buffer.is_empty())
    {
      status.exit_status=1;
      if (com_go(&glob_buffer,line) <= 0)
	status.exit_status=0;
    }
  }
  return status.exit_status;
}


static COMMANDS *find_command (char *name,char cmd_char)
{
  uint len;
  char *end;

  if (!name)
  {
    len=0;
    end=0;
  }
  else
  {
    while (isspace(*name))
      name++;
    if (strchr(name,';') || strstr(name,"\\g"))
      return ((COMMANDS *) 0);
    if ((end=strcont(name," \t")))
    {
      len=(uint) (end - name);
      while (isspace(*end))
	end++;
      if (!*end)
	end=0;					// no arguments to function
    }
    else
      len=(uint) strlen(name);
  }

  for (uint i= 0; commands[i].name; i++)
  {
    if (commands[i].func &&
	((name && !my_casecmp(name,commands[i].name,len) &&
	  !commands[i].name[len] &&
	  (!end || (end && commands[i].takes_params))) ||
	 !name && commands[i].cmd_char == cmd_char))
      return (&commands[i]);
  }
  return ((COMMANDS *) 0);
}


static bool add_line(String &buffer,char *line,char *in_string, 
                     my_bool *in_comment)
{
  uchar inchar;
  char buff[80],*pos,*out;
  COMMANDS *com;

  if (!line[0] && buffer.is_empty())
    return 0;
#ifdef HAVE_READLINE
  if (status.add_to_history && line[0])
    add_history(line);
#endif
#ifdef USE_MB
  char *strend=line+(uint) strlen(line);
#endif

  for (pos=out=line ; (inchar= (uchar) *pos) ; pos++)
  {
    if (isspace(inchar) && out == line && buffer.is_empty())
      continue;
#ifdef USE_MB
    int l;
    if (use_mb(default_charset_info) &&
        (l = my_ismbchar(default_charset_info, pos, strend))) {
	while (l--)
	    *out++ = *pos++;
	pos--;
	continue;
    }
#endif
    if (inchar == '\\')
    {					// mSQL or postgreSQL style command ?
      if (!(inchar = (uchar) *++pos))
	break;				// readline adds one '\'
      if (*in_string || inchar == 'N')	// \N is short for NULL
      {					// Don't allow commands in string
	*out++='\\';
	*out++= (char) inchar;
	continue;
      }
      if ((com=find_command(NullS,(char) inchar)))
      {
	const String tmp(line,(uint) (out-line));
	buffer.append(tmp);
	if ((*com->func)(&buffer,pos-1) > 0)
	  return 1;				// Quit
	if (com->takes_params)
	{
	  for (pos++ ; *pos && *pos != ';' ; pos++) ;	// Remove parameters
	  if (!*pos)
	    pos--;
	}
	out=line;
      }
      else
      {
	sprintf(buff,"Unknown command '\\%c'.",inchar);
	if (put_info(buff,INFO_ERROR) > 0)
	  return 1;
	*out++='\\';
	*out++=(char) inchar;
	continue;
      }
    }
    else if (inchar == ';' && !*in_string && !*in_comment)
    {						// ';' is end of command
      if (out != line)
	buffer.append(line,(uint) (out-line));	// Add this line
      if ((com=find_command(buffer.c_ptr(),0)))
      {
	if ((*com->func)(&buffer,buffer.c_ptr()) > 0)
	  return 1;				// Quit
      }
      else
      {
	int error=com_go(&buffer,0);
	if (error)
	{
	  return error < 0 ? 0 : 1;		// < 0 is not fatal
	}
      }
      buffer.length(0);
      out=line;
    }
    else if (!*in_string && (inchar == '#' ||
			     inchar == '-' && pos[1] == '-' &&
			     isspace(pos[2])))
      break;					// comment to end of line
    else
    {						// Add found char to buffer
      if (inchar == *in_string)
	*in_string=0;
      else if (!*in_comment && !*in_string && (inchar == '\'' || inchar == '"' || inchar == '`'))
	*in_string=(char) inchar;
      *out++ = (char) inchar;
      if (inchar == '*' && !*in_string)
      {
	if (pos != line && pos[-1] == '/')
	  *in_comment= 1;
	else if (in_comment && pos[1] == '/')
	  *in_comment= 0;
      }
    }
  }
  if (out != line || !buffer.is_empty())
  {
    *out++='\n';
    uint length=(uint) (out-line);
    if (buffer.length() + length >= buffer.alloced_length())
      buffer.realloc(buffer.length()+length+IO_SIZE);
    if (buffer.append(line,length))
      return 1;
  }
  return 0;
}

/*****************************************************************
	    Interface to Readline Completion
******************************************************************/

#ifdef HAVE_READLINE

static char *new_command_generator(char *text, int);
static char **new_mysql_completion (char *text, int start, int end);

/*
  Tell the GNU Readline library how to complete.  We want to try to complete
  on command names if this is the first word in the line, or on filenames
  if not.
*/

char **no_completion (char *text __attribute__ ((unused)),
		      char *word __attribute__ ((unused)))
{
  return 0;					/* No filename completion */
}

static void initialize_readline (char *name)
{
  /* Allow conditional parsing of the ~/.inputrc file. */
  rl_readline_name = name;

  /* Tell the completer that we want a crack first. */
  /* rl_attempted_completion_function = (CPPFunction *)mysql_completion;*/
  rl_attempted_completion_function = (CPPFunction *) new_mysql_completion;
  rl_completion_entry_function=(Function *) no_completion;
}

/*
  Attempt to complete on the contents of TEXT.  START and END show the
  region of TEXT that contains the word to complete.  We can use the
  entire line in case we want to do some simple parsing.  Return the
  array of matches, or NULL if there aren't any.
*/

static char **new_mysql_completion (char *text,
				    int start __attribute__((unused)),
				    int end __attribute__((unused)))
{
  if (!status.batch && !quick)
    return completion_matches(text, (CPFunction*) new_command_generator);
  else
    return (char**) 0;
}

static char *new_command_generator(char *text,int state)
{
  static int textlen;
  char *ptr;
  static Bucket *b;
  static entry *e;
  static uint i;

  if (!state)
    textlen=(uint) strlen(text);

  if (textlen>0)
  {						/* lookup in the hash */
    if (!state)
    {
      uint len;

      b = find_all_matches(&ht,text,(uint) strlen(text),&len);
      if (!b)
	return NullS;
      e = b->pData;
    }

    if (e)
    {
      ptr= strdup(e->str);
      e = e->pNext;
      return ptr;
    }
  }
  else
  { /* traverse the entire hash, ugly but works */

    if (!state)
    {
      /* find the first used bucket */
      for (i=0 ; i < ht.nTableSize ; i++)
      {
	if (ht.arBuckets[i])
	{
	  b = ht.arBuckets[i];
	  e = b->pData;
	  break;
	}
      }
    }
    ptr= NullS;
    while (e && !ptr)
    {					/* find valid entry in bucket */
      if ((uint) strlen(e->str) == b->nKeyLength)
	ptr = strdup(e->str);
      /* find the next used entry */
      e = e->pNext;
      if (!e)
      { /* find the next used bucket */
	b = b->pNext;
	if (!b)
	{
	  for (i++ ; i<ht.nTableSize; i++)
	  {
	    if (ht.arBuckets[i])
	    {
	      b = ht.arBuckets[i];
	      e = b->pData;
	      break;
	    }
	  }
	}
	else
	  e = b->pData;
      }
    }
    if (ptr)
      return ptr;
  }
  return NullS;
}


/* Build up the completion hash */

static void build_completion_hash(bool rehash, bool write_info)
{
  COMMANDS *cmd=commands;
  MYSQL_RES *databases=0,*tables=0;
  MYSQL_RES *fields;
  static char ***field_names= 0;
  MYSQL_ROW database_row,table_row;
  MYSQL_FIELD *sql_field;
  char buf[NAME_LEN*2+2];		 // table name plus field name plus 2
  int i,j,num_fields;
  DBUG_ENTER("build_completion_hash");

  if (status.batch || quick || !current_db)
    DBUG_VOID_RETURN;			// We don't need completion in batches

  if (tables)
  {
    mysql_free_result(tables);
    tables=0;
  }

  /* hash SQL commands */
  while (cmd->name) {
    add_word(&ht,(char*) cmd->name);
    cmd++;
  }
  if (!rehash)
    DBUG_VOID_RETURN;

  /* Free old used memory */
  if (field_names)
    field_names=0;
  completion_hash_clean(&ht);
  free_root(&hash_mem_root,MYF(0));

  /* hash MySQL functions (to be implemented) */

  /* hash all database names */
  if (mysql_query(&mysql,"show databases") == 0)
  {
    if (!(databases = mysql_store_result(&mysql)))
      put_info(mysql_error(&mysql),INFO_INFO);
    else
    {
      while ((database_row=mysql_fetch_row(databases)))
      {
	char *str=strdup_root(&hash_mem_root, (char*) database_row[0]);
	if (str)
	  add_word(&ht,(char*) str);
      }
      mysql_free_result(databases);
    }
  }
  /* hash all table names */
  if (mysql_query(&mysql,"show tables")==0)
  {
    if (!(tables = mysql_store_result(&mysql)))
      put_info(mysql_error(&mysql),INFO_INFO);
    else
    {
      if (mysql_num_rows(tables) > 0 && !opt_silent && write_info)
      {
	tee_fprintf(stdout, "\
Reading table information for completion of table and column names\n\
You can turn off this feature to get a quicker startup with -A\n\n");
      }
      while ((table_row=mysql_fetch_row(tables)))
      {
	char *str=strdup_root(&hash_mem_root, (char*) table_row[0]);
	if (str &&
	    !completion_hash_exists(&ht,(char*) str, (uint) strlen(str)))
	  add_word(&ht,str);
      }
    }
  }

  /* hash all field names, both with the table prefix and without it */
  if (!tables)					/* no tables */
  {
    DBUG_VOID_RETURN;
  }
  mysql_data_seek(tables,0);
  if (!(field_names= (char ***) alloc_root(&hash_mem_root,sizeof(char **) *
					   (uint) (mysql_num_rows(tables)+1))))
  {
    mysql_free_result(tables);
    DBUG_VOID_RETURN;
  }
  i=0;
  while ((table_row=mysql_fetch_row(tables)))
  {
    if ((fields=mysql_list_fields(&mysql,(const char*) table_row[0],NullS)))
    {
      num_fields=mysql_num_fields(fields);
      if (!(field_names[i] = (char **) alloc_root(&hash_mem_root,
						  sizeof(char *) *
						  (num_fields*2+1))))
	break;
      field_names[i][num_fields*2]='\0';
      j=0;
      while ((sql_field=mysql_fetch_field(fields)))
      {
	sprintf(buf,"%s.%s",table_row[0],sql_field->name);
	field_names[i][j] = strdup_root(&hash_mem_root,buf);
	add_word(&ht,field_names[i][j]);
	field_names[i][num_fields+j] = strdup_root(&hash_mem_root,
						   sql_field->name);
	if (!completion_hash_exists(&ht,field_names[i][num_fields+j],
				    (uint) strlen(field_names[i][num_fields+j])))
	  add_word(&ht,field_names[i][num_fields+j]);
	j++;
      }
      mysql_free_result(fields);
    }
    else
    {
      tee_fprintf(stdout,
		  "Didn't find any fields in table '%s'\n",table_row[0]);
      field_names[i]=0;
    }
    i++;
  }
  mysql_free_result(tables);
  field_names[i]=0;				// End pointer
  DBUG_VOID_RETURN;
}

	/* for gnu readline */

#ifndef HAVE_INDEX
extern "C" {
extern char *index(const char *,int c),*rindex(const char *,int);

char *index(const char *s,int c)
{
  for (;;)
  {
     if (*s == (char) c) return (char*) s;
     if (!*s++) return NullS;
  }
}

char *rindex(const char *s,int c)
{
  reg3 char *t;

  t = NullS;
  do if (*s == (char) c) t = (char*) s; while (*s++);
  return (char*) t;
}
}
#endif
#endif /* HAVE_READLINE */


static int reconnect(void)
{
  if (!status.batch)
  {
    put_info("No connection. Trying to reconnect...",INFO_INFO);
    (void) com_connect((String *) 0, 0);
    if (rehash)
      com_rehash(NULL, NULL);
  }
  if (!connected)
    return put_info("Can't connect to the server\n",INFO_ERROR);
  return 0;
}


/***************************************************************************
 The different commands
***************************************************************************/

static int
com_help (String *buffer __attribute__((unused)),
	  char *line __attribute__((unused)))
{
  reg1 int i;

  put_info("\nFor the complete MySQL Manual online visit:\n   http://www.mysql.com/documentation\n", INFO_INFO);
  put_info("For info on technical support from MySQL developers visit:\n   http://www.mysql.com/support\n", INFO_INFO);
  put_info("For info on MySQL books, utilities, consultants, etc. visit:\n   http://www.mysql.com/portal\n", INFO_INFO);
  put_info("List of all MySQL commands:", INFO_INFO);
  if (!named_cmds)
    put_info("   (Commands must appear first on line and end with ';')\n",
	     INFO_INFO);
  for (i = 0; commands[i].name; i++)
  {
    if (commands[i].func)
      tee_fprintf(stdout, "%s\t(\\%c)\t%s\n", commands[i].name,
		  commands[i].cmd_char, commands[i].doc);
  }
  if (connected)
    tee_fprintf(stdout,
		"\nConnection id: %lu  (Can be used with mysqladmin kill)\n\n",
		mysql_thread_id(&mysql));
  else
    tee_fprintf(stdout, "Not connected!  Reconnect with 'connect'!\n\n");
  return 0;
}


	/* ARGSUSED */
static int
com_clear(String *buffer,char *line __attribute__((unused)))
{
  buffer->length(0);
  return 0;
}


/*
  Execute command
  Returns: 0  if ok
          -1 if not fatal error
	  1  if fatal error
*/


static int
com_go(String *buffer,char *line __attribute__((unused)))
{
  char		buff[160],time_buff[32];
  MYSQL_RES	*result;
  ulong		timer;
  uint		error=0;

  if (!status.batch)
  {
    old_buffer= *buffer;			// Save for edit command
    old_buffer.copy();
  }

  /* Remove garbage for nicer messages */
  LINT_INIT(buff[0]);
  remove_cntrl(*buffer);

  if (buffer->is_empty())
  {
    if (status.batch)				// Ignore empty quries
      return 0;
    return put_info("No query specified\n",INFO_ERROR);

  }
  if (!connected && reconnect())
  {
    buffer->length(0);				// Remove query on error
    return status.batch ? 1 : -1;		// Fatal error
  }
  if (verbose)
    (void) com_print(buffer,0);

  if (skip_updates &&
      (buffer->length() < 4 || my_sortcmp(buffer->ptr(),"SET ",4)))
  {
    (void) put_info("Ignoring query to other database",INFO_INFO);
    return 0;
  }

  timer=start_timer();
  for (uint retry=0;; retry++)
  {
    if (!mysql_real_query(&mysql,buffer->ptr(),buffer->length()))
      break;
    error=put_info(mysql_error(&mysql),INFO_ERROR, mysql_errno(&mysql));
    if (mysql_errno(&mysql) != CR_SERVER_GONE_ERROR || retry > 1 
	|| status.batch)
    {
      buffer->length(0);			// Remove query on error
      return error;
    }
    if (reconnect())
    {
      buffer->length(0);			// Remove query on error
      return error;
    }
  }
  error=0;
  buffer->length(0);

  if (quick)
  {
    if (!(result=mysql_use_result(&mysql)) && mysql_field_count(&mysql))
    {
      return put_info(mysql_error(&mysql),INFO_ERROR,mysql_errno(&mysql));
    }
  }
  else
  {
    if (!(result=mysql_store_result(&mysql)))
    {
      if (mysql_error(&mysql)[0])
      {
	return put_info(mysql_error(&mysql),INFO_ERROR,mysql_errno(&mysql));
      }
    }
  }

  if (verbose >= 3 || !opt_silent)
    mysql_end_timer(timer,time_buff);
  else
    time_buff[0]=0;
  if (result)
  {
    if (!mysql_num_rows(result) && ! quick)
    {
      sprintf(buff,"Empty set%s",time_buff);
    }
    else
    {
      init_pager();
      if (opt_html)
	print_table_data_html(result);
      else if (opt_xml)
	print_table_data_xml(result);
      else if (vertical)
	print_table_data_vertically(result);
      else if (opt_silent && verbose <= 2 && !output_tables)
	print_tab_data(result);
      else
	print_table_data(result);
      sprintf(buff,"%ld %s in set%s",
	      (long) mysql_num_rows(result),
	      (long) mysql_num_rows(result) == 1 ? "row" : "rows",
	      time_buff);
      end_pager();
    }
  }
  else if (mysql_affected_rows(&mysql) == ~(ulonglong) 0)
    sprintf(buff,"Query OK%s",time_buff);
  else
    sprintf(buff,"Query OK, %ld %s affected%s",
	    (long) mysql_affected_rows(&mysql),
	    (long) mysql_affected_rows(&mysql) == 1 ? "row" : "rows",
	    time_buff);
  put_info(buff,INFO_RESULT);
  if (mysql_info(&mysql))
    put_info(mysql_info(&mysql),INFO_RESULT);
  put_info("",INFO_RESULT);			// Empty row

  if (result && !mysql_eof(result))	/* Something wrong when using quick */
    error=put_info(mysql_error(&mysql),INFO_ERROR,mysql_errno(&mysql));
  else if (unbuffered)
    fflush(stdout);
  mysql_free_result(result);
  return error;				/* New command follows */
}


static void init_pager()
{
#ifdef USE_POPEN
  if (!opt_nopager)
  {
    if (!(PAGER= popen(pager, "w")))
    {
      tee_fprintf(stdout, "popen() failed! defaulting PAGER to stdout!\n");
      PAGER= stdout;
    }
  }
  else
#endif
    PAGER= stdout;
}

static void end_pager()
{
#ifdef USE_POPEN
  if (!opt_nopager)
    pclose(PAGER);
#endif
}


static void init_tee(const char *file_name)
{
  FILE* new_outfile;
  if (opt_outfile)
    end_tee();
  if (!(new_outfile= my_fopen(file_name, O_APPEND | O_WRONLY, MYF(MY_WME))))
  {
    tee_fprintf(stdout, "Error logging to file '%s'\n", file_name);
    return;
  }
  OUTFILE = new_outfile;
  strmake(outfile, file_name, FN_REFLEN-1);
  tee_fprintf(stdout, "Logging to file '%s'\n", file_name);
  opt_outfile= 1;
  return;
}


static void end_tee()
{
  my_fclose(OUTFILE, MYF(0));
  OUTFILE= 0;
  opt_outfile= 0;
  return;
}

static int
com_ego(String *buffer,char *line)
{
  int result;
  bool oldvertical=vertical;
  vertical=1;
  result=com_go(buffer,line);
  vertical=oldvertical;
  return result;
}

static void
print_field_types(MYSQL_RES *result)
{
  MYSQL_FIELD	*field;  
  while ((field = mysql_fetch_field(result)))
  {
    tee_fprintf(PAGER,"Name:       '%s'\nTable:      '%s'\nType:       %d\nLength:     %d\nMax length: %d\nIs_null:    %d\nFlags:      %d\nDecimals:   %d\n\n",
		field->name,
		field->table ? "" : field->table,
		(int) field->type,
		field->length, field->max_length,
		!IS_NOT_NULL(field->flags),
		field->flags, field->decimals);
  }
  tee_puts("", PAGER);
}


static void
print_table_data(MYSQL_RES *result)
{
  String separator(256);
  MYSQL_ROW	cur;
  MYSQL_FIELD	*field;
  bool		*num_flag;

  num_flag=(bool*) my_alloca(sizeof(bool)*mysql_num_fields(result));
  if (info_flag)
  {
    print_field_types(result);
    mysql_field_seek(result,0);
  }
  separator.copy("+",1);
  while ((field = mysql_fetch_field(result)))
  {
    uint length= column_names ? (uint) strlen(field->name) : 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"
    field->max_length=length+1;
    separator.fill(separator.length()+length+2,'-');
    separator.append('+');
  }
  tee_puts(separator.c_ptr(), PAGER);
  if (column_names)
  {
    mysql_field_seek(result,0);
    (void) tee_fputs("|", PAGER);
    for (uint off=0; (field = mysql_fetch_field(result)) ; off++)
    {
      tee_fprintf(PAGER, " %-*s|",min(field->max_length,MAX_COLUMN_LENGTH),
		  field->name);
      num_flag[off]= IS_NUM(field->type);
    }
    (void) tee_fputs("\n", PAGER);
    tee_puts(separator.c_ptr(), PAGER);
  }

  while ((cur= mysql_fetch_row(result)))
  {
    (void) tee_fputs("|", PAGER);
    mysql_field_seek(result, 0);
    for (uint off= 0; off < mysql_num_fields(result); off++)
    {
      const char *str= cur[off] ? cur[off] : "NULL";
      field= mysql_fetch_field(result);
      uint length= field->max_length;
      if (length > MAX_COLUMN_LENGTH)
      {
	tee_fputs(str, PAGER);
	tee_fputs(" |", PAGER);
      }
      else
      tee_fprintf(PAGER, num_flag[off] ? "%*s |" : " %-*s|",
		  length, str);
    }
    (void) tee_fputs("\n", PAGER);
  }
  tee_puts(separator.c_ptr(), PAGER);
  my_afree((gptr) num_flag);
}


static void
print_table_data_html(MYSQL_RES *result)
{
  MYSQL_ROW	cur;
  MYSQL_FIELD	*field;

  mysql_field_seek(result,0);
  (void) tee_fputs("<TABLE BORDER=1><TR>", PAGER);
  if (column_names)
  {
    while((field = mysql_fetch_field(result)))
    {
      tee_fprintf(PAGER, "<TH>%s</TH>", (field->name ? 
					 (field->name[0] ? field->name : 
					  " &nbsp; ") : "NULL"));
    }
    (void) tee_fputs("</TR>", PAGER);
  }
  while ((cur = mysql_fetch_row(result)))
  {
    (void) tee_fputs("<TR>", PAGER);
    for (uint i=0; i < mysql_num_fields(result); i++)
    {
      ulong *lengths=mysql_fetch_lengths(result);
      (void) tee_fputs("<TD>", PAGER);
      safe_put_field(cur[i],lengths[i]);
      (void) tee_fputs("</TD>", PAGER);
    }
    (void) tee_fputs("</TR>", PAGER);
  }
  (void) tee_fputs("</TABLE>", PAGER);
}


static void
print_table_data_xml(MYSQL_RES *result)
{
  MYSQL_ROW   cur;
  MYSQL_FIELD *fields;

  mysql_field_seek(result,0);

  tee_fputs("<?xml version=\"1.0\"?>\n\n<resultset statement=\"", PAGER);
  xmlencode_print(glob_buffer.ptr(), strlen(glob_buffer.ptr()));
  tee_fputs("\">", PAGER);

  fields = mysql_fetch_fields(result);
  while ((cur = mysql_fetch_row(result)))
  {
    (void) tee_fputs("\n  <row>\n", PAGER);
    for (uint i=0; i < mysql_num_fields(result); i++)
    {
      ulong *lengths=mysql_fetch_lengths(result);
      tee_fprintf(PAGER, "\t<%s>", (fields[i].name ?
				  (fields[i].name[0] ? fields[i].name :
				   " &nbsp; ") : "NULL"));
      xmlencode_print(cur[i], lengths[i]);
      tee_fprintf(PAGER, "</%s>\n", (fields[i].name ?
				     (fields[i].name[0] ? fields[i].name :
				      " &nbsp; ") : "NULL"));
    }
    (void) tee_fputs("  </row>\n", PAGER);
  }
  (void) tee_fputs("</resultset>\n", PAGER);
}


static void
print_table_data_vertically(MYSQL_RES *result)
{
  MYSQL_ROW	cur;
  uint		max_length=0;
  MYSQL_FIELD	*field;

  while ((field = mysql_fetch_field(result)))
  {
    uint length=(uint) strlen(field->name);
    if (length > max_length)
      max_length= length;
    field->max_length=length;
  }

  mysql_field_seek(result,0);
  for (uint row_count=1; (cur= mysql_fetch_row(result)); row_count++)
  {
    mysql_field_seek(result,0);
    tee_fprintf(PAGER, 
		"*************************** %d. row ***************************\n", row_count);
    for (uint off=0; off < mysql_num_fields(result); off++)
    {
      field= mysql_fetch_field(result);
      tee_fprintf(PAGER, "%*s: ",(int) max_length,field->name);
      tee_fprintf(PAGER, "%s\n",cur[off] ? (char*) cur[off] : "NULL");
    }
  }
}


static const char
*array_value(const char **array, char key)
{
  int x;
  for (x= 0; array[x]; x+= 2)
    if (*array[x] == key)
      return array[x + 1];
  return 0;
}


static void
xmlencode_print(const char *src, uint length)
{
  if (!src)
    tee_fputs("NULL", PAGER);
  else
  {
    for (const char *p = src; *p && length; *p++, length--)
    {
      const char *t;
      if ((t = array_value(xmlmeta, *p)))
	tee_fputs(t, PAGER);
      else
	tee_putc(*p, PAGER);
    }
  }
}


static void
safe_put_field(const char *pos,ulong length)
{
  if (!pos)
    tee_fputs("NULL", PAGER);
  else
  {
    if (opt_raw_data)
      tee_fputs(pos, PAGER);
    else for (const char *end=pos+length ; pos != end ; pos++)
    {
#ifdef USE_MB
      int l;
      if (use_mb(default_charset_info) &&
          (l = my_ismbchar(default_charset_info, pos, end))) {
	  while (l--)
	    tee_putc(*pos++, PAGER);
	  pos--;
	  continue;
      }
#endif
      if (!*pos)
	tee_fputs("\\0", PAGER); // This makes everything hard
      else if (*pos == '\t')
	tee_fputs("\\t", PAGER); // This would destroy tab format
      else if (*pos == '\n')
	tee_fputs("\\n", PAGER); // This too
      else if (*pos == '\\')
	tee_fputs("\\\\", PAGER);
	else
	tee_putc(*pos, PAGER);
    }
  }
}


static void
print_tab_data(MYSQL_RES *result)
{
  MYSQL_ROW	cur;
  MYSQL_FIELD	*field;
  ulong		*lengths;

  if (opt_silent < 2 && column_names)
  {
    int first=0;
    while ((field = mysql_fetch_field(result)))
    {
      if (first++)
	(void) tee_fputs("\t", PAGER);
      (void) tee_fputs(field->name, PAGER);
    }
    (void) tee_fputs("\n", PAGER);
  }
  while ((cur = mysql_fetch_row(result)))
  {
    lengths=mysql_fetch_lengths(result);
    safe_put_field(cur[0],lengths[0]);
    for (uint off=1 ; off < mysql_num_fields(result); off++)
    {
      (void) tee_fputs("\t", PAGER);
      safe_put_field(cur[off], lengths[off]);
    }
    (void) tee_fputs("\n", PAGER);
  }
}

static int
com_tee(String *buffer, char *line __attribute__((unused)))
{
  char file_name[FN_REFLEN], *end, *param;

  if (status.batch)
    return 0;
  while (isspace(*line))
    line++;
  if (!(param = strchr(line, ' '))) // if outfile wasn't given, use the default
  {
    if (!strlen(outfile))
    {
      printf("No previous outfile available, you must give a filename!\n");
      return 0;
    }
    else if (opt_outfile)
    {
      tee_fprintf(stdout, "Currently logging to file '%s'\n", outfile);
      return 0;
    }
    else
      param = outfile;			//resume using the old outfile
  }

  /* eliminate the spaces before the parameters */
  while (isspace(*param))
    param++;
  end= strmake(file_name, param, sizeof(file_name) - 1);
  /* remove end space from command line */
  while (end > file_name && (isspace(end[-1]) || iscntrl(end[-1])))
    end--;
  end[0]= 0;
  if (end == file_name)
  {
    printf("No outfile specified!\n");
    return 0;
  }
  init_tee(file_name);
  return 0;
}


static int
com_notee(String *buffer __attribute__((unused)),
	  char *line __attribute__((unused)))
{
  if (opt_outfile)
    end_tee();
  tee_fprintf(stdout, "Outfile disabled.\n");
  return 0;
}

/*
  Sorry, this command is not available in Windows.
*/

#ifdef USE_POPEN
static int
com_pager(String *buffer, char *line __attribute__((unused)))
{
  char pager_name[FN_REFLEN], *end, *param;

  if (status.batch)
    return 0;
  /* Skip space from file name */
  while (isspace(*line))
    line++;
  if (!(param= strchr(line, ' '))) // if pager was not given, use the default
  {
    if (!default_pager[0])
    {
      tee_fprintf(stdout, "Default pager wasn't set, using stdout.\n");
      opt_nopager=1;
      strmov(pager, "stdout");
      PAGER= stdout;
      return 0;
    }
    strmov(pager, default_pager);
  }
  else
  {
    while (isspace(*param))
      param++;
    end=strmake(pager_name, param, sizeof(pager_name)-1);
    while (end > pager_name && (isspace(end[-1]) || iscntrl(end[-1])))
      end--;
    end[0]=0;
    strmov(pager, pager_name);
    strmov(default_pager, pager_name);
  }
  opt_nopager=0;
  tee_fprintf(stdout, "PAGER set to %s\n", pager);
  return 0;
}


static int
com_nopager(String *buffer __attribute__((unused)),
	    char *line __attribute__((unused)))
{
  strmov(pager, "stdout");
  opt_nopager=1;
  tee_fprintf(stdout, "PAGER set to stdout\n");
  return 0;
}
#endif


/*
  Sorry, you can't send the result to an editor in Win32
*/

#ifdef USE_POPEN
static int
com_edit(String *buffer,char *line __attribute__((unused)))
{
  char	filename[FN_REFLEN],buff[160];
  int	fd,tmp;
  const char *editor;

  if ((fd=create_temp_file(filename,NullS,"sql", O_CREAT | O_WRONLY,
			   MYF(MY_WME))) < 0)
    goto err;
  if (buffer->is_empty() && !old_buffer.is_empty())
    (void) my_write(fd,(byte*) old_buffer.ptr(),old_buffer.length(),
		    MYF(MY_WME));
  else
    (void) my_write(fd,(byte*) buffer->ptr(),buffer->length(),MYF(MY_WME));
  (void) my_close(fd,MYF(0));

  if (!(editor = (char *)getenv("EDITOR")) &&
      !(editor = (char *)getenv("VISUAL")))
    editor = "vi";
  strxmov(buff,editor," ",filename,NullS);
  (void) system(buff);

  MY_STAT stat_arg;
  if (!my_stat(filename,&stat_arg,MYF(MY_WME)))
    goto err;
  if ((fd = my_open(filename,O_RDONLY, MYF(MY_WME))) < 0)
    goto err;
  (void) buffer->alloc((uint) stat_arg.st_size);
  if ((tmp=read(fd,(char*) buffer->ptr(),buffer->alloced_length())) >= 0L)
    buffer->length((uint) tmp);
  else
    buffer->length(0);
  (void) my_close(fd,MYF(0));
  (void) my_delete(filename,MYF(MY_WME));
err:
  return 0;
}
#endif


/* If arg is given, exit without errors. This happens on command 'quit' */

static int
com_quit(String *buffer __attribute__((unused)),
	 char *line __attribute__((unused)))
{
  /* let the screen auto close on a normal shutdown */
  NETWARE_SET_SCREEN_MODE(SCR_AUTOCLOSE_ON_EXIT);
  status.exit_status=0;
  return 1;
}

static int
com_rehash(String *buffer __attribute__((unused)),
	 char *line __attribute__((unused)))
{
#ifdef HAVE_READLINE
  build_completion_hash(1, 0);
#endif
  return 0;
}


#ifdef USE_POPEN
static int
com_shell(String *buffer, char *line __attribute__((unused)))
{
  char *shell_cmd;

  /* Skip space from line begin */
  while (isspace(*line))
    line++;
  if (!(shell_cmd = strchr(line, ' ')))
  {
    put_info("Usage: \\! shell-command", INFO_ERROR);
    return -1;
  }
  /*
    The output of the shell command does not
    get directed to the pager or the outfile
  */
  if (system(shell_cmd) == -1)
  {
    put_info(strerror(errno), INFO_ERROR, errno);
    return -1;
  }
  return 0;
}
#endif


static int
com_print(String *buffer,char *line __attribute__((unused)))
{
  tee_puts("--------------", stdout);
  (void) tee_fputs(buffer->c_ptr(), stdout);
  if (!buffer->length() || (*buffer)[buffer->length()-1] != '\n')
    tee_putc('\n', stdout);
  tee_puts("--------------\n", stdout);
  return 0;					/* If empty buffer */
}

	/* ARGSUSED */
static int
com_connect(String *buffer, char *line)
{
  char *tmp,buff[256];
  bool save_rehash= rehash;
  int error;

  if (buffer)
  {
    while (isspace(*line))
      line++;
    strnmov(buff,line,sizeof(buff)-1);		// Don't destroy history
    if (buff[0] == '\\')			// Short command
      buff[1]=' ';
    tmp=(char *) strtok(buff," \t");		// Skip connect command
    if (tmp && (tmp=(char *) strtok(NullS," \t;")))
    {
      my_free(current_db,MYF(MY_ALLOW_ZERO_PTR));
      current_db=my_strdup(tmp,MYF(MY_WME));
      if ((tmp=(char *) strtok(NullS," \t;")))
      {
	my_free(current_host,MYF(MY_ALLOW_ZERO_PTR));
	current_host=my_strdup(tmp,MYF(MY_WME));
      }
    }
    else
      rehash= 0;				// Quick re-connect
    buffer->length(0);				// command used
  }
  else
    rehash= 0;
  error=sql_connect(current_host,current_db,current_user,opt_password,0);
  rehash= save_rehash;

  if (connected)
  {
    sprintf(buff,"Connection id:    %lu",mysql_thread_id(&mysql));
    put_info(buff,INFO_INFO);
    sprintf(buff,"Current database: %s\n",
	    current_db ? current_db : "*** NONE ***");
    put_info(buff,INFO_INFO);
  }
  return error;
}


static int com_source(String *buffer, char *line)
{
  char source_name[FN_REFLEN], *end, *param;
  LINE_BUFFER *line_buff;
  int error;
  STATUS old_status;
  FILE *sql_file;

  /* Skip space from file name */
  while (isspace(*line))
    line++;
  if (!(param = strchr(line, ' ')))		// Skip command name
    return put_info("Usage: \\. <filename> | source <filename>", 
		    INFO_ERROR, 0);
  while (isspace(*param))
    param++;
  end=strmake(source_name,param,sizeof(source_name)-1);
  while (end > source_name && (isspace(end[-1]) || iscntrl(end[-1])))
    end--;
  end[0]=0;
  unpack_filename(source_name,source_name);
  /* open file name */
  if (!(sql_file = my_fopen(source_name, O_RDONLY | O_BINARY,MYF(0))))
  {
    char buff[FN_REFLEN+60];
    sprintf(buff,"Failed to open file '%s', error: %d", source_name,errno);
    return put_info(buff, INFO_ERROR, 0);
  }

  if (!(line_buff=batch_readline_init(opt_max_allowed_packet+512,sql_file)))
  {
    my_fclose(sql_file,MYF(0));
    return put_info("Can't initialize batch_readline", INFO_ERROR, 0);
  }

  /* Save old status */
  old_status=status;
  bfill((char*) &status,sizeof(status),(char) 0);

  status.batch=old_status.batch;		// Run in batch mode
  status.line_buff=line_buff;
  status.file_name=source_name;
  glob_buffer.length(0);			// Empty command buffer
  error=read_lines(0);				// Read lines from file
  status=old_status;				// Continue as before
  my_fclose(sql_file,MYF(0));
  batch_readline_end(line_buff);
  return error;
}


	/* ARGSUSED */
static int
com_use(String *buffer __attribute__((unused)), char *line)
{
  char tmp[FN_REFLEN], buff[FN_REFLEN + 1];
  MYSQL_RES *res;
  MYSQL_ROW row;
  char *c_buff, *c_tmp;

  while (isspace(*line))
    line++;
  strnmov(buff,line,sizeof(buff)-1);		// Don't destroy history
  if (buff[0] == '\\')				// Short command
    buff[1]=' ';
  c_buff= buff;
  while ((*c_buff != ' ') && (*c_buff != '\t')) // Skip connect command
    c_buff++;
  c_buff++;

  while ((*c_buff == ' ') || (*c_buff == '\t'))
    c_buff++;
  c_tmp= tmp;
  if (*c_buff == '`')                           // Handling backticks
  {
    c_buff++;
    for (; *c_buff; c_tmp++)
    {
      if (*c_buff == '`')
      {
	if (c_buff[1] == '`')
	{
	  *c_tmp= '`';
	  c_buff+= 2;
	}
	else
	  break;
      }
      else
	*c_tmp= *(c_buff++);
    }
  }
  else
    for (; !strchr(" \t;", *c_buff); c_buff++, c_tmp++)
      *c_tmp= *c_buff;
  *c_tmp= '\0';
  
  if (!*tmp)
  {
    put_info("USE must be followed by a database name",INFO_ERROR);
    return 0;
  }
  /*
    We need to recheck the current database, because it may change
    under our feet, for example if DROP DATABASE or RENAME DATABASE
    (latter one not yet available by the time the comment was written)
  */
  /*  Let's reset current_db, assume it's gone */
  my_free(current_db, MYF(MY_ALLOW_ZERO_PTR));
  current_db= 0;
  /*
    We don't care about in case of an error below because current_db
    was just set to 0.
  */
  if (!mysql_query(&mysql, "SELECT DATABASE()") &&
      (res= mysql_use_result(&mysql)))
  {
    row= mysql_fetch_row(res);
    if (row[0])
    {
      current_db= my_strdup(row[0], MYF(MY_WME));
    }
    (void) mysql_fetch_row(res);               // Read eof
    mysql_free_result(res);
  }

  if (!current_db || cmp_database(current_db,tmp))
  {
    if (one_database)
      skip_updates= 1;
    else
    {
      /*
	reconnect once if connection is down or if connection was found to
	be down during query
      */
      if (!connected && reconnect())
	return status.batch ? 1 : -1;			// Fatal error
      if (mysql_select_db(&mysql,tmp))
      {
	if (mysql_errno(&mysql) != CR_SERVER_GONE_ERROR)
	  return put_info(mysql_error(&mysql),INFO_ERROR,mysql_errno(&mysql));

	if (reconnect())
	  return status.batch ? 1 : -1;			// Fatal error
	if (mysql_select_db(&mysql,tmp))
	  return put_info(mysql_error(&mysql),INFO_ERROR,mysql_errno(&mysql));
      }
      my_free(current_db,MYF(MY_ALLOW_ZERO_PTR));
      current_db=my_strdup(tmp,MYF(MY_WME));
#ifdef HAVE_READLINE
      build_completion_hash(rehash, 1);
#endif
    }
  }
  else
    skip_updates= 0;
  put_info("Database changed",INFO_INFO);
  return 0;
}


static int
sql_real_connect(char *host,char *database,char *user,char *password,
		 uint silent)
{
  if (connected)
  {
    connected= 0;
    mysql_close(&mysql);
  }
  mysql_init(&mysql);
  if (opt_connect_timeout)
  {
    uint timeout=opt_connect_timeout;
    mysql_options(&mysql,MYSQL_OPT_CONNECT_TIMEOUT,
		  (char*) &timeout);
  }
  if (opt_compress)
    mysql_options(&mysql,MYSQL_OPT_COMPRESS,NullS);
  if (using_opt_local_infile)
    mysql_options(&mysql,MYSQL_OPT_LOCAL_INFILE, (char*) &opt_local_infile);
#ifdef HAVE_OPENSSL
  if (opt_use_ssl)
    mysql_ssl_set(&mysql, opt_ssl_key, opt_ssl_cert, opt_ssl_ca,
		  opt_ssl_capath, opt_ssl_cipher);
#endif
  if (safe_updates)
  {
    char init_command[100];
    sprintf(init_command,
	    "SET SQL_SAFE_UPDATES=1,SQL_SELECT_LIMIT=%lu,SQL_MAX_JOIN_SIZE=%lu",
	    select_limit,max_join_size);
    mysql_options(&mysql, MYSQL_INIT_COMMAND, init_command);
  }
  if (!mysql_real_connect(&mysql, host, user, password,
			  database, opt_mysql_port, opt_mysql_unix_port,
			  connect_flag))
  {
    if (!silent ||
	(mysql_errno(&mysql) != CR_CONN_HOST_ERROR &&
	 mysql_errno(&mysql) != CR_CONNECTION_ERROR))
    {
      put_info(mysql_error(&mysql),INFO_ERROR,mysql_errno(&mysql));
      (void) fflush(stdout);
      return ignore_errors ? -1 : 1;		// Abort
    }
    return -1;					// Retryable
  }
  connected=1;
  mysql.reconnect=info_flag ? 1 : 0; // We want to know if this happens
#ifdef HAVE_READLINE
  build_completion_hash(rehash, 1);
#endif
  return 0;
}


static int
sql_connect(char *host,char *database,char *user,char *password,uint silent)
{
  bool message=0;
  uint count=0;
  int error;
  for (;;)
  {
    if ((error=sql_real_connect(host,database,user,password,wait_flag)) >= 0)
    {
      if (count)
      {
	tee_fputs("\n", stderr);
	(void) fflush(stderr);
      }
      return error;
    }
    if (!wait_flag)
      return ignore_errors ? -1 : 1;
    if (!message && !silent)
    {
      message=1;
      tee_fputs("Waiting",stderr); (void) fflush(stderr);
    }
    (void) sleep(wait_time);
    if (!silent)
    {
      putc('.',stderr); (void) fflush(stderr);
      count++;
    }
  }
}



static int
com_status(String *buffer __attribute__((unused)),
	   char *line __attribute__((unused)))
{
  const char *status;
  tee_puts("--------------", stdout);
  usage(1);					/* Print version */
  if (connected)
  {
    MYSQL_RES *result;
    LINT_INIT(result);
    tee_fprintf(stdout, "\nConnection id:\t\t%lu\n",mysql_thread_id(&mysql));
    if (!mysql_query(&mysql,"select DATABASE(), USER() limit 1") &&
	(result=mysql_use_result(&mysql)))
    {
      MYSQL_ROW cur=mysql_fetch_row(result);
      if (cur)
      {
        tee_fprintf(stdout, "Current database:\t%s\n", cur[0] ? cur[0] : "");
        tee_fprintf(stdout, "Current user:\t\t%s\n", cur[1]);
      }
      mysql_free_result(result);
    }
#ifdef HAVE_OPENSSL
    if (mysql.net.vio && mysql.net.vio->ssl_arg &&
	SSL_get_cipher((SSL*) mysql.net.vio->ssl_arg))
      tee_fprintf(stdout, "SSL:\t\t\tCipher in use is %s\n",
		  SSL_get_cipher((SSL*) mysql.net.vio->ssl_arg));
    else
#endif /* HAVE_OPENSSL */
      tee_puts("SSL:\t\t\tNot in use", stdout);
  }
  else
  {
    vidattr(A_BOLD);
    tee_fprintf(stdout, "\nNo connection\n");
    vidattr(A_NORMAL);
    return 0;
  }
  if (skip_updates)
  {
    vidattr(A_BOLD);
    tee_fprintf(stdout, "\nAll updates ignored to this database\n");
    vidattr(A_NORMAL);
  }
#ifdef USE_POPEN
  tee_fprintf(stdout, "Current pager:\t\t%s\n", pager);
  tee_fprintf(stdout, "Using outfile:\t\t'%s'\n", opt_outfile ? outfile : "");
#endif
  tee_fprintf(stdout, "Server version:\t\t%s\n", mysql_get_server_info(&mysql));
  tee_fprintf(stdout, "Protocol version:\t%d\n", mysql_get_proto_info(&mysql));
  tee_fprintf(stdout, "Connection:\t\t%s\n", mysql_get_host_info(&mysql));
  tee_fprintf(stdout, "Client characterset:\t%s\n",
	      default_charset_info->name);
  tee_fprintf(stdout, "Server characterset:\t%s\n", mysql.charset->name);
  if (strstr(mysql_get_host_info(&mysql),"TCP/IP") || ! mysql.unix_socket)
    tee_fprintf(stdout, "TCP port:\t\t%d\n", mysql.port);
  else
    tee_fprintf(stdout, "UNIX socket:\t\t%s\n", mysql.unix_socket);
  if (mysql.net.compress)
    tee_fprintf(stdout, "Protocol:\t\tCompressed\n");

  if ((status=mysql_stat(&mysql)) && !mysql_error(&mysql)[0])
  {
    ulong sec;
    char buff[40];
    const char *pos= strchr(status,' ');
    /* print label */
    tee_fprintf(stdout, "%.*s\t\t\t", (int) (pos-status), status);
    if ((status=str2int(pos,10,0,LONG_MAX,(long*) &sec)))
    {
      nice_time((double) sec,buff,0);
      tee_puts(buff, stdout);			/* print nice time */
      while (*status == ' ') status++;		/* to next info */
    }
    if (status)
    {
      tee_putc('\n', stdout);
      tee_puts(status, stdout);
    }
  }
  if (safe_updates)
  {
    vidattr(A_BOLD);
    tee_fprintf(stdout, "\nNote that you are running in safe_update_mode:\n");
    vidattr(A_NORMAL);
    tee_fprintf(stdout, "\
UPDATEs and DELETEs that don't use a key in the WHERE clause are not allowed.\n\
(One can force an UPDATE/DELETE by adding LIMIT # at the end of the command.)\n\
SELECT has an automatic 'LIMIT %lu' if LIMIT is not used.\n\
Max number of examined row combination in a join is set to: %lu\n\n",
select_limit, max_join_size);
  }
  tee_puts("--------------\n", stdout);
  return 0;
}


static int
put_info(const char *str,INFO_TYPE info_type,uint error)
{
  FILE *file= (info_type == INFO_ERROR ? stderr : stdout);
  static int inited=0;

  if (status.batch)
  {
    if (info_type == INFO_ERROR)
    {
      (void) fflush(file);
      fprintf(file,"ERROR");
      if (error)
	(void) fprintf(file," %d",error);
      if (status.query_start_line && line_numbers)
      {
	(void) fprintf(file," at line %lu",status.query_start_line);
	if (status.file_name)
	  (void) fprintf(file," in file: '%s'", status.file_name);
      }
      (void) fprintf(file,": %s\n",str);
      (void) fflush(file);
      if (!ignore_errors)
	return 1;
    }
    else if (info_type == INFO_RESULT && verbose > 1)
      tee_puts(str, file);
    if (unbuffered)
      fflush(file);
    return info_type == INFO_ERROR ? -1 : 0;
  }
  if (!opt_silent || info_type == INFO_ERROR)
  {
    if (!inited)
    {
      inited=1;
#ifdef HAVE_SETUPTERM
      (void) setupterm((char *)0, 1, (int *) 0);
#endif
    }
    if (info_type == INFO_ERROR)
    {
      if (!opt_nobeep)
	putchar('\007');		      	/* This should make a bell */
      vidattr(A_STANDOUT);
      if (error)
        (void) tee_fprintf(file, "ERROR %d: ", error);
      else
        tee_puts("ERROR: ", file);
    }
    else
      vidattr(A_BOLD);
    (void) tee_puts(str, file);
    vidattr(A_NORMAL);
  }
  if (unbuffered)
    fflush(file);
  return info_type == INFO_ERROR ? -1 : 0;
}


static void remove_cntrl(String &buffer)
{
  char *start,*end;
  end=(start=(char*) buffer.ptr())+buffer.length();
  while (start < end && !isgraph(end[-1]))
    end--;
  buffer.length((uint) (end-start));
}


void tee_fprintf(FILE *file, const char *fmt, ...)
{
  va_list args;

  NETWARE_YIELD;
  va_start(args, fmt);
  (void) vfprintf(file, fmt, args);
#ifdef OS2
  fflush( file);
#endif
  if (opt_outfile)
    (void) vfprintf(OUTFILE, fmt, args);
  va_end(args);
}


void tee_fputs(const char *s, FILE *file)
{
  NETWARE_YIELD;
  fputs(s, file);
#ifdef OS2
  fflush( file);
#endif
  if (opt_outfile)
    fputs(s, OUTFILE);
}


void tee_puts(const char *s, FILE *file)
{
  NETWARE_YIELD;
  fputs(s, file);
  fputs("\n", file);
#ifdef OS2
  fflush( file);
#endif
  if (opt_outfile)
  {
    fputs(s, OUTFILE);
    fputs("\n", OUTFILE);
  }
}

void tee_putc(int c, FILE *file)
{
  putc(c, file);
#ifdef OS2
  fflush( file);
#endif
  if (opt_outfile)
    putc(c, OUTFILE);
}

#if defined( __WIN__) || defined( OS2) || defined(__NETWARE__)
#include <time.h>
#else
#include <sys/times.h>
#ifdef _SC_CLK_TCK				// For mit-pthreads
#undef CLOCKS_PER_SEC
#define CLOCKS_PER_SEC (sysconf(_SC_CLK_TCK))
#endif
#endif

static ulong start_timer(void)
{
#if defined( __WIN__) || defined( OS2) || defined(__NETWARE__)
 return clock();
#else
  struct tms tms_tmp;
  return times(&tms_tmp);
#endif
}


static void nice_time(double sec,char *buff,bool part_second)
{
  ulong tmp;
  if (sec >= 3600.0*24)
  {
    tmp=(ulong) floor(sec/(3600.0*24));
    sec-=3600.0*24*tmp;
    buff=int2str((long) tmp,buff,10);
    buff=strmov(buff,tmp > 1 ? " days " : " day ");
  }
  if (sec >= 3600.0)
  {
    tmp=(ulong) floor(sec/3600.0);
    sec-=3600.0*tmp;
    buff=int2str((long) tmp,buff,10);
    buff=strmov(buff,tmp > 1 ? " hours " : " hour ");
  }
  if (sec >= 60.0)
  {
    tmp=(ulong) floor(sec/60.0);
    sec-=60.0*tmp;
    buff=int2str((long) tmp,buff,10);
    buff=strmov(buff," min ");
  }
  if (part_second)
    sprintf(buff,"%.2f sec",sec);
  else
    sprintf(buff,"%d sec",(int) sec);
}


static void end_timer(ulong start_time,char *buff)
{
  nice_time((double) (start_timer() - start_time) /
	    CLOCKS_PER_SEC,buff,1);
}


static void mysql_end_timer(ulong start_time,char *buff)
{
  buff[0]=' ';
  buff[1]='(';
  end_timer(start_time,buff+2);
  strmov(strend(buff),")");
}

static const char* construct_prompt()
{
  processed_prompt.free();			// Erase the old prompt
  time_t  lclock = time(NULL);			// Get the date struct
  struct tm *t = localtime(&lclock);

  /* parse thru the settings for the prompt */
  for (char *c = current_prompt; *c ; *c++)
  {
    if (*c != PROMPT_CHAR)
	processed_prompt.append(*c);
    else
    {
      switch (*++c) {
      case '\0':
	c--;			// stop it from going beyond if ends with %
	break;
      case 'c':
	add_int_to_prompt(++prompt_counter);
	break;
      case 'v':
	if (connected)
	  processed_prompt.append(mysql_get_server_info(&mysql));
	else
	  processed_prompt.append("not_connected");
	break;
      case 'd':
	processed_prompt.append(current_db ? current_db : "(none)");
	break;
      case 'h':
      {
	const char *prompt;
	prompt= connected ? mysql_get_host_info(&mysql) : "not_connected";
	if (strstr(prompt, "Localhost"))
	  processed_prompt.append("localhost");
	else
	{
	  const char *end=strcend(prompt,' ');
	  processed_prompt.append(prompt, (uint) (end-prompt));
	}
	break;
      }
      case 'p':
	if (!connected)
	{
	  processed_prompt.append("not_connected");
	  break;
	}
	if (strstr(mysql_get_host_info(&mysql),"TCP/IP") || !
	    mysql.unix_socket)
	  add_int_to_prompt(mysql.port);
	else
	{
	  char *pos=strrchr(mysql.unix_socket,'/');
	  processed_prompt.append(pos ? pos+1 : mysql.unix_socket);
	}
	break;
      case 'U':
	if (!full_username)
	  init_username();
	processed_prompt.append(full_username);
	break;
      case 'u':
	if (!full_username)
	  init_username();
	processed_prompt.append(part_username);
	break;
      case PROMPT_CHAR:
	processed_prompt.append(PROMPT_CHAR);
	break;
      case 'n':
	processed_prompt.append('\n');
	break;
      case ' ':
      case '_':
	processed_prompt.append(' ');
	break;
      case 'R':
	if (t->tm_hour < 10)
	  processed_prompt.append('0');
	add_int_to_prompt(t->tm_hour);
	break;
      case 'r':
	int getHour;
	getHour = t->tm_hour % 12;
	if (getHour == 0)
	  getHour=12;
	if (getHour < 10)
	  processed_prompt.append('0');
	add_int_to_prompt(getHour);
	break;
      case 'm':
	if (t->tm_min < 10)
	  processed_prompt.append('0');
	add_int_to_prompt(t->tm_min);
	break;
      case 'y':
	int getYear;
	getYear = t->tm_year % 100;
	if (getYear < 10)
	  processed_prompt.append('0');
	add_int_to_prompt(getYear);
	break;
      case 'Y':
	add_int_to_prompt(t->tm_year+1900);
	break;
      case 'D':
	char* dateTime;
	time_t lclock;
	lclock = time(NULL);
	dateTime = ctime(&lclock);
	processed_prompt.append(strtok(dateTime,"\n"));
	break;
      case 's':
	if (t->tm_sec < 10)
	  processed_prompt.append('0');
	add_int_to_prompt(t->tm_sec);
	break;
      case 'w':
	processed_prompt.append(day_names[t->tm_wday]);
	break;
      case 'P':
	processed_prompt.append(t->tm_hour < 12 ? "am" : "pm");
	break;
      case 'o':
	add_int_to_prompt(t->tm_mon+1);
	break;
      case 'O':
	processed_prompt.append(month_names[t->tm_mon]);
	break;
      case '\'':
	processed_prompt.append("'");
	break;
      case '"':
	processed_prompt.append('"');
	break;
      case 'S':
	processed_prompt.append(';');
	break;
      case 't':
	processed_prompt.append('\t');
	break;
      default:
	processed_prompt.append(c);
      }
    }
  }
  processed_prompt.append('\0');
  return processed_prompt.ptr();
}


static void add_int_to_prompt(int toadd)
{
  char buffer[16];
  int10_to_str(toadd,buffer,10);
  processed_prompt.append(buffer);
}

static void init_username()
{
  my_free(full_username,MYF(MY_ALLOW_ZERO_PTR));
  my_free(part_username,MYF(MY_ALLOW_ZERO_PTR));

  MYSQL_RES *result;
  LINT_INIT(result);
  if (!mysql_query(&mysql,"select USER()") &&
      (result=mysql_use_result(&mysql)))
  {
    MYSQL_ROW cur=mysql_fetch_row(result);
    full_username=my_strdup(cur[0],MYF(MY_WME));
    part_username=my_strdup(strtok(cur[0],"@"),MYF(MY_WME));
    (void) mysql_fetch_row(result);		// Read eof
  }
}

static int com_prompt(String *buffer, char *line)
{
  char *ptr=strchr(line, ' ');
  prompt_counter = 0;
  my_free(current_prompt,MYF(MY_ALLOW_ZERO_PTR));
  current_prompt=my_strdup(ptr ? ptr+1 : default_prompt,MYF(MY_WME));
  if (!ptr)
    tee_fprintf(stdout, "Returning to default PROMPT of %s\n", default_prompt);
  else
    tee_fprintf(stdout, "PROMPT set to '%s'\n", current_prompt);
  return 0;
}

#ifndef EMBEDDED_LIBRARY
/* Keep sql_string library happy */

gptr sql_alloc(unsigned int Size)
{
  return my_malloc(Size,MYF(MY_WME));
}

void sql_element_free(void *ptr)
{
  my_free((gptr) ptr,MYF(0));
}
#endif /* EMBEDDED_LIBRARY */
