Merge of ncurses-4.1-971129

1 files changed, 77 insertions, 0 deletions

diff --git a/lib/libcurses/trace_buf.c b/lib/libcurses/trace_buf.c
new file mode 100644
index 00000000000..610c66bd4c9
--- /dev/null
+++ b/lib/libcurses/trace_buf.c
@@ -0,0 +1,77 @@
+/*	$OpenBSD: trace_buf.c,v 1.1 1997/12/03 05:21:44 millert Exp $	*/
+
+/******************************************************************************
+ * Copyright 1997 by Thomas E. Dickey <dickey@clark.net>                      *
+ * All Rights Reserved.                                                       *
+ *                                                                            *
+ * Permission to use, copy, modify, and distribute this software and its      *
+ * documentation for any purpose and without fee is hereby granted, provided  *
+ * that the above copyright notice appear in all copies and that both that    *
+ * copyright notice and this permission notice appear in supporting           *
+ * documentation, and that the name of the above listed copyright holder(s)   *
+ * not be used in advertising or publicity pertaining to distribution of the  *
+ * software without specific, written prior permission.                       *
+ *                                                                            *
+ * THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD   *
+ * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND  *
+ * FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE  *
+ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES          *
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN      *
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR *
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.                *
+ ******************************************************************************/
+/*
+ *	trace_buf.c - Tracing/Debugging buffers (attributes)
+ */
+
+#include <curses.priv.h>
+
+MODULE_ID("Id: trace_buf.c,v 1.2 1997/10/26 22:09:05 tom Exp $")
+
+char * _nc_trace_buf(int bufnum, size_t want)
+{
+	static struct {
+		char *text;
+		size_t size;
+	} *list;
+	static size_t have;
+
+#if NO_LEAKS
+	if (bufnum < 0) {
+		if (have) {
+			while (have--) {
+				free(list[have].text);
+			}
+			free(list);
+		}
+		return 0;
+	}
+#endif
+
+	if ((size_t)(bufnum+1) > have) {
+		size_t need = (bufnum + 1) * 2;
+		size_t used = sizeof(*list) * need;
+		list = (list == 0) ? malloc(used) : realloc(list, used);
+		if (list == 0) {
+			errno = ENOMEM;
+			return(NULL);
+		}
+		while (need > have)
+			list[have++].text = 0;
+	}
+
+	if (list[bufnum].text == 0)
+	{
+		list[bufnum].text = malloc(want);
+		list[bufnum].size = want;
+	}
+	else if (want > list[bufnum].size) {
+		list[bufnum].text = realloc(list[bufnum].text, want);
+		list[bufnum].size = want;
+	}
+	if (list[bufnum].text != 0)
+		*(list[bufnum].text) = '\0';
+	else
+		errno = ENOMEM;
+	return list[bufnum].text;
+}