Base version of ncurses-5.7 library
diff --git a/ncurses/trace/trace_buf.c b/ncurses/trace/trace_buf.c
new file mode 100644
index 0000000..6345acc
--- /dev/null
+++ b/ncurses/trace/trace_buf.c
@@ -0,0 +1,114 @@
+/****************************************************************************
+ * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Author: Thomas E. Dickey 1997-on *
+ ****************************************************************************/
+/*
+ * trace_buf.c - Tracing/Debugging buffers (attributes)
+ */
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: trace_buf.c,v 1.14 2008/08/03 15:13:56 tom Exp $")
+
+#define MyList _nc_globals.tracebuf_ptr
+#define MySize _nc_globals.tracebuf_used
+
+static char *
+_nc_trace_alloc(int bufnum, size_t want)
+{
+ char *result = 0;
+
+ if (bufnum >= 0) {
+ if ((size_t) (bufnum + 1) > MySize) {
+ size_t need = (bufnum + 1) * 2;
+ if ((MyList = typeRealloc(TRACEBUF, need, MyList)) != 0) {
+ while (need > MySize)
+ MyList[MySize++].text = 0;
+ }
+ }
+
+ if (MyList != 0) {
+ if (MyList[bufnum].text == 0
+ || want > MyList[bufnum].size) {
+ MyList[bufnum].text = typeRealloc(char, want, MyList[bufnum].text);
+ if (MyList[bufnum].text != 0)
+ MyList[bufnum].size = want;
+ }
+ result = MyList[bufnum].text;
+ }
+ }
+#if NO_LEAKS
+ else {
+ if (MySize) {
+ if (MyList) {
+ while (MySize--) {
+ if (MyList[MySize].text != 0) {
+ free(MyList[MySize].text);
+ }
+ }
+ free(MyList);
+ MyList = 0;
+ }
+ MySize = 0;
+ }
+ }
+#endif
+ return result;
+}
+
+/*
+ * (re)Allocate a buffer big enough for the caller's wants.
+ */
+NCURSES_EXPORT(char *)
+_nc_trace_buf(int bufnum, size_t want)
+{
+ char *result = _nc_trace_alloc(bufnum, want);
+ if (result != 0)
+ *result = '\0';
+ return result;
+}
+
+/*
+ * Append a new string to an existing buffer.
+ */
+NCURSES_EXPORT(char *)
+_nc_trace_bufcat(int bufnum, const char *value)
+{
+ char *buffer = _nc_trace_alloc(bufnum, 0);
+ if (buffer != 0) {
+ size_t have = strlen(buffer);
+
+ buffer = _nc_trace_alloc(bufnum, 1 + have + strlen(value));
+ if (buffer != 0)
+ (void) strcpy(buffer + have, value);
+
+ }
+ return buffer;
+}