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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "tool_setup.h"
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#include "terminal.h"
#include "memdebug.h" /* keep this as LAST include */
#ifdef HAVE_TERMIOS_H
# include <termios.h>
#elif defined(HAVE_TERMIO_H)
# include <termio.h>
#endif
/*
* get_terminal_columns() returns the number of columns in the current
* terminal. It will return 79 on failure. Also, the number can be very big.
*/
unsigned int get_terminal_columns(void)
{
unsigned int width = 0;
char *colp = curl_getenv("COLUMNS");
if(colp) {
char *endptr;
long num = strtol(colp, &endptr, 10);
if((endptr != colp) && (endptr == colp + strlen(colp)) && (num > 20) &&
(num < 10000))
width = (unsigned int)num;
curl_free(colp);
}
if(!width) {
int cols = 0;
#ifdef TIOCGSIZE
struct ttysize ts;
if(!ioctl(STDIN_FILENO, TIOCGSIZE, &ts))
cols = ts.ts_cols;
#elif defined(TIOCGWINSZ)
struct winsize ts;
if(!ioctl(STDIN_FILENO, TIOCGWINSZ, &ts))
cols = (int)ts.ws_col;
#elif defined(_WIN32) && !defined(CURL_WINDOWS_APP)
{
HANDLE stderr_hnd = GetStdHandle(STD_ERROR_HANDLE);
CONSOLE_SCREEN_BUFFER_INFO console_info;
if((stderr_hnd != INVALID_HANDLE_VALUE) &&
GetConsoleScreenBufferInfo(stderr_hnd, &console_info)) {
/*
* Do not use +1 to get the true screen-width since writing a
* character at the right edge will cause a line wrap.
*/
cols = (int)
(console_info.srWindow.Right - console_info.srWindow.Left);
}
}
#endif /* TIOCGSIZE */
if(cols >= 0 && cols < 10000)
width = (unsigned int)cols;
}
if(!width)
width = 79;
return width; /* 79 for unknown, might also be very small or very big */
}
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