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readline.c

/* 
   Unix SMB/Netbios implementation.
   Version 3.0
   Samba readline wrapper implementation
   Copyright (C) Simo Sorce 2001
   Copyright (C) Andrew Tridgell 2001
   
   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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"

/****************************************************************************
 Display the prompt and wait for input. Call callback() regularly
****************************************************************************/

char *smb_readline(char *prompt, void (*callback)(void), 
               char **(*completion_fn)__P((const char *text, int start, int end)))
{
      char *ret;
      int fd = fileno(stdin);

#if HAVE_LIBREADLINE

      /*
       * Current versions of readline on Linux seem to have
       * problems with EOF on a pipe.
       */

      if (isatty(fd)) {
            if (completion_fn)
                  rl_attempted_completion_function = completion_fn;

            if (callback)
                  rl_event_hook = (Function *)callback;
            ret = readline(prompt);
            if (ret && *ret)
                  add_history(ret);
            return ret;
      } else
#endif
      {
            fd_set fds;
            extern FILE *dbf;
            static pstring line;
            struct timeval timeout;

            fprintf(dbf, "%s", prompt);
            fflush(dbf);

            while (1) {
                  timeout.tv_sec = 5;
                  timeout.tv_usec = 0;

                  FD_ZERO(&fds);
                  FD_SET(fd,&fds);
      
                  if (sys_select_intr(fd+1,&fds,NULL,NULL,&timeout) == 1) {
                        ret = fgets(line, sizeof(line), stdin);
                        return ret;
                  }
                  if (callback)
                        callback();
            }
      }
}

/****************************************************************************
history
****************************************************************************/
void cmd_history(void)
{
#if defined(HAVE_LIBREADLINE)
      HIST_ENTRY **hlist;
      int i;

      hlist = history_list();
      
      for (i = 0; hlist && hlist[i]; i++) {
            DEBUG(0, ("%d: %s\n", i, hlist[i]->line));
      }
#else
      DEBUG(0,("no history without readline support\n"));
#endif
}

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