1 files changed, 102 insertions, 0 deletions
diff --git a/lib/roken/get_window_size.c b/lib/roken/get_window_size.c
new file mode 100644
index 0000000..7fa91d6
--- /dev/null
+++ b/lib/roken/get_window_size.c
@@ -0,0 +1,102 @@
+/*
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+RCSID("$Id: get_window_size.c 21005 2007-06-08 01:54:35Z lha $");
+#endif
+
+#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"
+
+int ROKEN_LIB_FUNCTION
+get_window_size(int fd, struct winsize *wp)
+{
+    int ret = -1;
+    
+    memset(wp, 0, sizeof(*wp));
+
+#if defined(TIOCGWINSZ)
+    ret = ioctl(fd, TIOCGWINSZ, wp);
+#elif defined(TIOCGSIZE)
+    {
+	struct ttysize ts;
+	
+	ret = ioctl(fd, TIOCGSIZE, &ts);
+	if(ret == 0) {
+	    wp->ws_row = ts.ts_lines;
+	    wp->ws_col = ts.ts_cols;
+	}
+    }
+#elif defined(HAVE__SCRSIZE)
+    {
+	int dst[2];
+	
+	_scrsize(dst);
+	wp->ws_row = dst[1];
+	wp->ws_col = dst[0];
+	ret = 0;
+    }
+#endif
+    if (ret != 0) {
+        char *s;
+        if((s = getenv("COLUMNS")))
+	    wp->ws_col = atoi(s);
+	if((s = getenv("LINES")))
+	    wp->ws_row = atoi(s);
+	if(wp->ws_col > 0 && wp->ws_row > 0)
+	    ret = 0;
+    }
+    return ret;
+}