diff options
Diffstat (limited to 'third_party/heimdal/lib/roken/get_window_size.c')
-rw-r--r-- | third_party/heimdal/lib/roken/get_window_size.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/roken/get_window_size.c b/third_party/heimdal/lib/roken/get_window_size.c new file mode 100644 index 0000000..5a4a175 --- /dev/null +++ b/third_party/heimdal/lib/roken/get_window_size.c @@ -0,0 +1,132 @@ +/* + * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <config.h> + +#include <stdlib.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif + +#if 0 /* Where were those needed? /confused */ +#ifdef HAVE_SYS_PROC_H +#include <sys/proc.h> +#endif + +#ifdef HAVE_SYS_TTY_H +#include <sys/tty.h> +#endif +#endif + +#ifdef HAVE_TERMIOS_H +#include <termios.h> +#endif + +#include "roken.h" + +ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL +get_window_size(int fd, int *lines, int *columns) +{ + char *s; + +#if defined(TIOCGWINSZ) + { + struct winsize ws; + int ret; + ret = ioctl(fd, TIOCGWINSZ, &ws); + if (ret != -1) { + if (lines) + *lines = ws.ws_row; + if (columns) + *columns = ws.ws_col; + return 0; + } + } +#elif defined(TIOCGSIZE) + { + struct ttysize ts; + int ret; + ret = ioctl(fd, TIOCGSIZE, &ts); + if (ret != -1) { + if (lines) + *lines = ts.ws_lines; + if (columns) + *columns = ts.ts_cols; + return 0; + } + } +#elif defined(HAVE__SCRSIZE) + { + int dst[2]; + + _scrsize(dst); + if (lines) + *lines = dst[1]; + if (columns) + *columns = dst[0]; + return 0; + } +#elif defined(_WIN32) + { + intptr_t fh = 0; + CONSOLE_SCREEN_BUFFER_INFO sb_info; + + fh = _get_osfhandle(fd); + if (fh != (intptr_t) INVALID_HANDLE_VALUE && + GetConsoleScreenBufferInfo((HANDLE) fh, &sb_info)) { + if (lines) + *lines = 1 + sb_info.srWindow.Bottom - sb_info.srWindow.Top; + if (columns) + *columns = 1 + sb_info.srWindow.Right - sb_info.srWindow.Left; + + return 0; + } + } +#endif + if (columns) { + if ((s = getenv("COLUMNS"))) + *columns = atoi(s); + else + return -1; + } + if (lines) { + if ((s = getenv("LINES"))) + *lines = atoi(s); + else + return -1; + } + return 0; +} |