Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 245 insertions, 0 deletions

diff --git a/third_party/heimdal/lib/libedit/src/hist.c b/third_party/heimdal/lib/libedit/src/hist.c
new file mode 100644
index 0000000..4f01ade
--- /dev/null
+++ b/third_party/heimdal/lib/libedit/src/hist.c
@@ -0,0 +1,245 @@
+/*	$NetBSD: hist.c,v 1.30 2016/11/07 15:30:18 christos Exp $	*/
+
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Christos Zoulas of Cornell University.
+ *
+ * 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 University 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 REGENTS 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 REGENTS 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"
+#if !defined(lint) && !defined(SCCSID)
+#if 0
+static char sccsid[] = "@(#)hist.c	8.1 (Berkeley) 6/4/93";
+#else
+__RCSID("$NetBSD: hist.c,v 1.30 2016/11/07 15:30:18 christos Exp $");
+#endif
+#endif /* not lint && not SCCSID */
+
+/*
+ * hist.c: History access functions
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <vis.h>
+
+#include "el.h"
+
+/* hist_init():
+ *	Initialization function.
+ */
+libedit_private int
+hist_init(EditLine *el)
+{
+
+	el->el_history.fun = NULL;
+	el->el_history.ref = NULL;
+	el->el_history.buf = el_malloc(EL_BUFSIZ * sizeof(*el->el_history.buf));
+	el->el_history.sz  = EL_BUFSIZ;
+	if (el->el_history.buf == NULL)
+		return -1;
+	el->el_history.last = el->el_history.buf;
+	return 0;
+}
+
+
+/* hist_end():
+ *	clean up history;
+ */
+libedit_private void
+hist_end(EditLine *el)
+{
+
+	el_free(el->el_history.buf);
+	el->el_history.buf = NULL;
+}
+
+
+/* hist_set():
+ *	Set new history interface
+ */
+libedit_private int
+hist_set(EditLine *el, hist_fun_t fun, void *ptr)
+{
+
+	el->el_history.ref = ptr;
+	el->el_history.fun = fun;
+	return 0;
+}
+
+
+/* hist_get():
+ *	Get a history line and update it in the buffer.
+ *	eventno tells us the event to get.
+ */
+libedit_private el_action_t
+hist_get(EditLine *el)
+{
+	const wchar_t *hp;
+	int h;
+
+	if (el->el_history.eventno == 0) {	/* if really the current line */
+		(void) wcsncpy(el->el_line.buffer, el->el_history.buf,
+		    el->el_history.sz);
+		el->el_line.lastchar = el->el_line.buffer +
+		    (el->el_history.last - el->el_history.buf);
+
+#ifdef KSHVI
+		if (el->el_map.type == MAP_VI)
+			el->el_line.cursor = el->el_line.buffer;
+		else
+#endif /* KSHVI */
+			el->el_line.cursor = el->el_line.lastchar;
+
+		return CC_REFRESH;
+	}
+	if (el->el_history.ref == NULL)
+		return CC_ERROR;
+
+	hp = HIST_FIRST(el);
+
+	if (hp == NULL)
+		return CC_ERROR;
+
+	for (h = 1; h < el->el_history.eventno; h++)
+		if ((hp = HIST_NEXT(el)) == NULL) {
+			el->el_history.eventno = h;
+			return CC_ERROR;
+		}
+	(void) wcsncpy(el->el_line.buffer, hp,
+			(size_t)(el->el_line.limit - el->el_line.buffer));
+	el->el_line.buffer[el->el_line.limit - el->el_line.buffer - 1] = '\0';
+	el->el_line.lastchar = el->el_line.buffer + wcslen(el->el_line.buffer);
+
+	if (el->el_line.lastchar > el->el_line.buffer
+	    && el->el_line.lastchar[-1] == '\n')
+		el->el_line.lastchar--;
+	if (el->el_line.lastchar > el->el_line.buffer
+	    && el->el_line.lastchar[-1] == ' ')
+		el->el_line.lastchar--;
+#ifdef KSHVI
+	if (el->el_map.type == MAP_VI)
+		el->el_line.cursor = el->el_line.buffer;
+	else
+#endif /* KSHVI */
+		el->el_line.cursor = el->el_line.lastchar;
+
+	return CC_REFRESH;
+}
+
+
+/* hist_command()
+ *	process a history command
+ */
+libedit_private int
+hist_command(EditLine *el, int argc, const wchar_t **argv)
+{
+	const wchar_t *str;
+	int num;
+	HistEventW ev;
+
+	if (el->el_history.ref == NULL)
+		return -1;
+
+	if (argc == 1 || wcscmp(argv[1], L"list") == 0) {
+		size_t maxlen = 0;
+		char *buf = NULL;
+		int hno = 1;
+		 /* List history entries */
+
+		for (str = HIST_LAST(el); str != NULL; str = HIST_PREV(el)) {
+			char *ptr =
+			    ct_encode_string(str, &el->el_scratch);
+			size_t len = strlen(ptr);
+			if (len > 0 && ptr[len - 1] == '\n') 
+				ptr[--len] = '\0';
+			len = len * 4 + 1;
+			if (len >= maxlen) {
+				maxlen = len + 1024;
+				char *nbuf = el_realloc(buf, maxlen);
+				if (nbuf == NULL) {
+					el_free(buf);
+					return -1;
+				}
+				buf = nbuf;
+			}
+			strvis(buf, ptr, VIS_NL);
+			(void) fprintf(el->el_outfile, "%d\t%s\n",
+			    hno++, buf);
+		}
+		el_free(buf);
+		return 0;
+	}
+
+	if (argc != 3)
+		return -1;
+
+	num = (int)wcstol(argv[2], NULL, 0);
+
+	if (wcscmp(argv[1], L"size") == 0)
+		return history_w(el->el_history.ref, &ev, H_SETSIZE, num);
+
+	if (wcscmp(argv[1], L"unique") == 0)
+		return history_w(el->el_history.ref, &ev, H_SETUNIQUE, num);
+
+	return -1;
+}
+
+/* hist_enlargebuf()
+ *	Enlarge history buffer to specified value. Called from el_enlargebufs().
+ *	Return 0 for failure, 1 for success.
+ */
+libedit_private int
+/*ARGSUSED*/
+hist_enlargebuf(EditLine *el, size_t oldsz, size_t newsz)
+{
+	wchar_t *newbuf;
+
+	newbuf = el_realloc(el->el_history.buf, newsz * sizeof(*newbuf));
+	if (!newbuf)
+		return 0;
+
+	(void) memset(&newbuf[oldsz], '\0', (newsz - oldsz) * sizeof(*newbuf));
+
+	el->el_history.last = newbuf +
+				(el->el_history.last - el->el_history.buf);
+	el->el_history.buf = newbuf;
+	el->el_history.sz  = newsz;
+
+	return 1;
+}
+
+libedit_private wchar_t *
+hist_convert(EditLine *el, int fn, void *arg)
+{
+	HistEventW ev;
+	if ((*(el)->el_history.fun)((el)->el_history.ref, &ev, fn, arg) == -1)
+		return NULL;
+	return ct_decode_string((const char *)(const void *)ev.str,
+	    &el->el_scratch);
+}