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Filename : manexamp.c

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/* manexamp.c -- The examples which appear in the documentation are here. */

/* Copyright (C) 1987-2009 Free Software Foundation, Inc.

   This file is part of the GNU Readline Library (Readline), a library for
   reading lines of text with interactive input and history editing.

   Readline 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 3 of the License, or
   (at your option) any later version.

   Readline 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 Readline.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>
#include <readline/readline.h>

/* **************************************************************** */
/*                                                                  */
/*   			How to Emulate gets ()			    */
/*                                                                  */
/* **************************************************************** */

/* A static variable for holding the line. */
static char *line_read = (char *)NULL;

/* Read a string, and return a pointer to it.  Returns NULL on EOF. */
char *
rl_gets ()
{
  /* If the buffer has already been allocated, return the memory
     to the free pool. */
  if (line_read)
    {
      free (line_read);
      line_read = (char *)NULL;
    }

  /* Get a line from the user. */
  line_read = readline ("");

  /* If the line has any text in it, save it on the history. */
  if (line_read && *line_read)
    add_history (line_read);

  return (line_read);
}

/* **************************************************************** */
/*                                                                  */
/*        Writing a Function to be Called by Readline.              */
/*                                                                  */
/* **************************************************************** */

/* Invert the case of the COUNT following characters. */
invert_case_line (count, key)
     int count, key;
{
  register int start, end;

  start = rl_point;

  if (count < 0)
    {
      direction = -1;
      count = -count;
    }
  else
    direction = 1;
      
  /* Find the end of the range to modify. */
  end = start + (count * direction);

  /* Force it to be within range. */
  if (end > rl_end)
    end = rl_end;
  else if (end < 0)
    end = -1;

  if (start > end)
    {
      int temp = start;
      start = end;
      end = temp;
    }

  if (start == end)
    return;

  /* Tell readline that we are modifying the line, so save the undo
     information. */
  rl_modifying (start, end);

  for (; start != end; start += direction)
    {
      if (_rl_uppercase_p (rl_line_buffer[start]))
	rl_line_buffer[start] = _rl_to_lower (rl_line_buffer[start]);
      else if (_rl_lowercase_p (rl_line_buffer[start]))
	rl_line_buffer[start] = _rl_to_upper (rl_line_buffer[start]);
    }

  /* Move point to on top of the last character changed. */
  rl_point = end - direction;
}

Name	Size	Last Modified	Owner	Permissions
rlfe	Dir	December 04 2020 5:08:55	root	0755
CHANGES	64.017 KB	August 23 2016 2:17:37	root	0644
excallback.c	5.672 KB	July 07 2011 12:17:41	root	0644
fileman.c	11.363 KB	August 06 2015 2:55:39	root	0644
hist_erasedups.c	2.642 KB	April 22 2016 3:04:43	root	0644
histexamp.c	2.821 KB	January 04 2009 7:32:33	root	0644
hist_purgecmd.c	3.256 KB	April 22 2016 3:04:19	root	0644
manexamp.c	3.223 KB	January 04 2009 7:32:33	root	0644
NEWS	12.382 KB	January 22 2016 2:10:37	root	0644
readlinebuf.h	3.356 KB	August 20 2008 1:16:56	root	0644
README	7.84 KB	July 02 2015 3:31:40	root	0644
rlbasic.c	0.448 KB	August 06 2015 2:50:26	root	0644
rl.c	3.124 KB	August 06 2015 2:51:23	root	0644
rl-callbacktest.c	2.492 KB	April 26 2016 2:05:31	root	0644
rlcat.c	3.222 KB	January 04 2009 7:32:33	root	0644
rlevent.c	3.218 KB	January 06 2009 5:04:26	root	0644
rl-fgets.c	10.886 KB	April 22 2004 8:52:17	root	0644
rlptytest.c	6.467 KB	April 26 2016 1:45:24	root	0644
rltest.c	2.096 KB	January 04 2009 7:32:33	root	0644
rlversion.c	1.261 KB	August 06 2015 2:50:34	root	0644

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