2010-03-17 10:36:02 -04:00
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/*
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* Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <stdio.h>
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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# include <stddef.h>
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#else
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# ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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# endif
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#endif /* STDC_HEADERS */
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif /* HAVE_UNISTD_H */
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#ifdef HAVE_TERMIOS_H
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# include <termios.h>
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#else
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# include <termio.h>
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#endif
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2010-04-30 15:13:47 -04:00
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#include <compat.h>
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2010-03-17 10:36:02 -04:00
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#if !defined(TIOCGSIZE) && defined(TIOCGWINSZ)
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# define TIOCGSIZE TIOCGWINSZ
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# define ttysize winsize
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# define ts_cols ws_col
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# define ts_lines ws_row
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#endif
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void
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get_ttysize(int *linep, int *colp)
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{
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char *p;
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#ifdef TIOCGSIZE
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struct ttysize win;
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if (ioctl(STDERR_FILENO, TIOCGSIZE, &win) == 0 &&
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win.ts_lines != 0 && win.ts_cols != 0) {
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*linep = win.ts_lines;
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*colp = win.ts_cols;
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return;
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}
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#endif
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/* Fall back on $LINES and $COLUMNS. */
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if ((p = getenv("LINES")) == NULL || (*linep = atoi(p)) <= 0)
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*linep = 24;
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if ((p = getenv("COLUMNS")) == NULL || (*colp = atoi(p)) <= 0)
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*colp = 80;
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}
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