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/*
* Copyright (c) 2003 Nikodemus Siivola
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <termios.h>
#include <stdlib.h>
#include <sys/ioctl.h>
const int linedit_OK = 0;
const int linedit_NOT_ATTY = 1;
const int linedit_MEMORY_ERROR = 2;
const int linedit_TCGETATTR_ERROR = 3;
const int linedit_TCSETATTR_ERROR = 4;
const int linedit_ATTR_ERROR = 5;
const int linedit_NO_ATTR_ERROR = 6;
linedit_terminal_init (void)
if (! isatty (STDIN_FILENO))
return linedit_NOT_ATTY;
if (attr)
return linedit_ATTR_ERROR;
attr = malloc (sizeof (struct termios));
if (! attr)
return linedit_MEMORY_ERROR;
if (0 > tcgetattr (STDIN_FILENO, attr))
return linedit_TCGETATTR_ERROR;
/* Enter keyboard input mode. */
if (0 > tcgetattr (STDIN_FILENO, &tmp))
return linedit_TCGETATTR_ERROR;
cfmakeraw (&tmp);
if (0 > tcsetattr (STDIN_FILENO, TCSAFLUSH, &tmp))
return linedit_TCSETATTR_ERROR;
linedit_terminal_close (void)
/* Restore saved terminal state from attr. */
if (! attr)
return linedit_NO_ATTR_ERROR;
if (! isatty (STDIN_FILENO))
return linedit_NOT_ATTY;
if (0 > tcsetattr (STDIN_FILENO, TCSANOW, attr))
return linedit_TCSETATTR_ERROR;
free (attr);
attr = NULL;
return linedit_OK;
}
int
linedit_terminal_columns (int def)
/* For Linux at least. See ioctl_list(2). */
# if defined TIOCGWINSZ
struct winsize size;
if (0 == ioctl (STDIN_FILENO, TIOCGWINSZ, &size))
return size.ws_col;
# endif
if ((col = getenv ("COLUMNS")))
return atoi (col);
else
return def;
linedit_terminal_lines (int def)
char * lin;
/* For Linux at least. See ioctl_list(2). */
# if defined TIOCGWINSZ
struct winsize size;
if (0 == ioctl (STDIN_FILENO, TIOCGWINSZ, &size))
return size.ws_row;
# endif
if ((lin = getenv ("LINES")))
return atoi (lin);
else
return def;