/* histsearch.c -- searching the history list. */
-/* Copyright (C) 1989, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1989, 1992-2009 Free Software Foundation, Inc.
- This file contains the GNU History Library (the Library), a set of
+ This file contains the GNU History Library (History), a set of
routines for managing the text of previously typed lines.
- The Library is free software; you can redistribute it and/or modify
+ History is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- The Library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ History is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
- The GNU General Public License is often shipped with GNU software, and
- is generally kept in a file called COPYING or LICENSE. If you do not
- have a copy of the license, write to the Free Software Foundation,
- 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with History. If not, see <http://www.gnu.org/licenses/>.
+*/
#define READLINE_LIBRARY
#else
# include "ansi_stdlib.h"
#endif /* HAVE_STDLIB_H */
+
#if defined (HAVE_UNISTD_H)
+# ifdef _MINIX
+# include <sys/types.h>
+# endif
# include <unistd.h>
#endif
-#if defined (HAVE_STRING_H)
-# include <string.h>
-#else
-# include <strings.h>
-#endif /* !HAVE_STRING_H */
#include "history.h"
#include "histlib.h"
-/* Variables imported from other history library files. */
-extern int history_offset;
-
/* The list of alternate characters that can delimit a history search
string. */
char *history_search_delimiter_chars = (char *)NULL;
+static int history_search_internal PARAMS((const char *, int, int));
+
/* Search the history for STRING, starting at history_offset.
If DIRECTION < 0, then the search is through previous entries, else
through subsequent. If ANCHORED is non-zero, the string must
static int
history_search_internal (string, direction, anchored)
- char *string;
+ const char *string;
int direction, anchored;
{
register int i, reverse;
if (string == 0 || *string == '\0')
return (-1);
- if (!history_length || ((i == history_length) && !reverse))
+ if (!history_length || ((i >= history_length) && !reverse))
return (-1);
- if (reverse && (i == history_length))
- i--;
+ if (reverse && (i >= history_length))
+ i = history_length - 1;
#define NEXT_LINE() do { if (reverse) i--; else i++; } while (0)
/* Do a non-anchored search for STRING through the history in DIRECTION. */
int
history_search (string, direction)
- char *string;
+ const char *string;
int direction;
{
return (history_search_internal (string, direction, NON_ANCHORED_SEARCH));
/* Do an anchored search for string through the history in DIRECTION. */
int
history_search_prefix (string, direction)
- char *string;
+ const char *string;
int direction;
{
return (history_search_internal (string, direction, ANCHORED_SEARCH));
which point to begin searching. */
int
history_search_pos (string, dir, pos)
- char *string;
+ const char *string;
int dir, pos;
{
int ret, old;