/* */
/* **************************************************************** */
-/* Copyright (C) 1987,1989 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2002 Free Software Foundation, Inc.
This file contains the Readline Library (the Library), a set of
routines for providing Emacs style line input to programs that ask
The Library 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)
+ the Free Software Foundation; either version 2, or (at your option)
any later version.
The Library is distributed in the hope that it will be useful, but
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. */
+ 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
#define READLINE_LIBRARY
#if defined (HAVE_CONFIG_H)
#endif
#include "rldefs.h"
+#include "rlmbutil.h"
+
#include "readline.h"
#include "history.h"
+#include "rlprivate.h"
+#include "xmalloc.h"
+
/* Variables exported to other files in the readline library. */
-unsigned char *_rl_isearch_terminators = (unsigned char *)NULL;
+char *_rl_isearch_terminators = (char *)NULL;
/* Variables imported from other files in the readline library. */
-extern Keymap _rl_keymap;
-extern HIST_ENTRY *saved_line_for_history;
-extern int rl_line_buffer_len;
-extern int rl_point, rl_end;
-extern char *rl_line_buffer;
-
-extern int rl_execute_next ();
-extern void rl_extend_line_buffer ();
-
-extern int _rl_input_available ();
+extern HIST_ENTRY *_rl_saved_line_for_history;
-extern char *xmalloc (), *xrealloc ();
-
-static int rl_search_history ();
+/* Forward declarations */
+static int rl_search_history PARAMS((int, int));
/* Last line found by the current incremental search, so we don't `find'
identical lines many times in a row. */
static char *prev_line_found;
+/* Last search string and its length. */
+static char *last_isearch_string;
+static int last_isearch_string_len;
+
+static char *default_isearch_terminators = "\033\012";
+
/* Search backwards through the history looking for a string which is typed
interactively. Start with the current line. */
int
searchlen = (search_string && *search_string) ? strlen (search_string) : 0;
- message = xmalloc (searchlen + 33);
+ message = (char *)xmalloc (searchlen + 33);
msglen = 0;
#if defined (NOTDEF)
strcpy (message + msglen, "': ");
- rl_message ("%s", message, 0);
+ rl_message ("%s", message);
free (message);
(*rl_redisplay_function) ();
}
HIST_ENTRY **hlist;
register int i;
- int orig_point, orig_line, last_found_line;
+ int orig_point, orig_mark, orig_line, last_found_line;
int c, found, failed, sline_len;
+ int n, wstart, wlen;
+#if defined (HANDLE_MULTIBYTE)
+ char mb[MB_LEN_MAX];
+#endif
/* The line currently being searched. */
char *sline;
/* The list of characters which terminate the search, but are not
subsequently executed. If the variable isearch-terminators has
been set, we use that value, otherwise we use ESC and C-J. */
- unsigned char *isearch_terminators;
+ char *isearch_terminators;
+ RL_SETSTATE(RL_STATE_ISEARCH);
orig_point = rl_point;
+ orig_mark = rl_mark;
last_found_line = orig_line = where_history ();
reverse = direction < 0;
hlist = history_list ();
allocated_line = (char *)NULL;
isearch_terminators = _rl_isearch_terminators ? _rl_isearch_terminators
- : (unsigned char *)"\033\012";
+ : default_isearch_terminators;
/* Create an arrary of pointers to the lines that we want to search. */
- maybe_replace_line ();
+ rl_maybe_replace_line ();
i = 0;
if (hlist)
for (i = 0; hlist[i]; i++);
for (i = 0; i < hlen; i++)
lines[i] = hlist[i]->line;
- if (saved_line_for_history)
- lines[i] = saved_line_for_history->line;
+ if (_rl_saved_line_for_history)
+ lines[i] = _rl_saved_line_for_history->line;
else
{
/* Keep track of this so we can free it. */
- allocated_line = xmalloc (1 + strlen (rl_line_buffer));
+ allocated_line = (char *)xmalloc (1 + strlen (rl_line_buffer));
strcpy (allocated_line, &rl_line_buffer[0]);
lines[i] = allocated_line;
}
rl_save_prompt ();
/* Initialize search parameters. */
- search_string = xmalloc (search_string_size = 128);
+ search_string = (char *)xmalloc (search_string_size = 128);
*search_string = '\0';
search_string_index = 0;
prev_line_found = (char *)0; /* XXX */
found = failed = 0;
for (;;)
{
- Function *f = (Function *)NULL;
+ rl_command_func_t *f = (rl_command_func_t *)NULL;
/* Read a key and decide how to proceed. */
+ RL_SETSTATE(RL_STATE_MOREINPUT);
c = rl_read_key ();
+ RL_UNSETSTATE(RL_STATE_MOREINPUT);
- if (_rl_keymap[c].type == ISFUNC)
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ c = _rl_read_mbstring (c, mb, MB_LEN_MAX);
+#endif
+
+ /* Translate the keys we do something with to opcodes. */
+ if (c >= 0 && _rl_keymap[c].type == ISFUNC)
{
f = _rl_keymap[c].function;
c = reverse ? -1 : -2;
else if (f == rl_forward_search_history)
c = !reverse ? -1 : -2;
+ else if (f == rl_rubout)
+ c = -3;
+ else if (c == CTRL ('G'))
+ c = -4;
+ else if (c == CTRL ('W')) /* XXX */
+ c = -5;
+ else if (c == CTRL ('Y')) /* XXX */
+ c = -6;
}
-#if 0
- /* Let NEWLINE (^J) terminate the search for people who don't like
- using ESC. ^M can still be used to terminate the search and
- immediately execute the command. */
- if (c == ESC || c == NEWLINE)
-#else
/* The characters in isearch_terminators (set from the user-settable
variable isearch-terminators) are used to terminate the search but
not subsequently execute the character as a command. The default
value is "\033\012" (ESC and C-J). */
if (strchr (isearch_terminators, c))
-#endif
{
/* ESC still terminates the search, but if there is pending
input or if input arrives within 0.1 seconds (on systems
with select(2)) it is used as a prefix character
with rl_execute_next. WATCH OUT FOR THIS! This is intended
to allow the arrow keys to be used like ^F and ^B are used
- to terminate the search and execute the movement command. */
- if (c == ESC && _rl_input_available ()) /* XXX */
+ to terminate the search and execute the movement command.
+ XXX - since _rl_input_available depends on the application-
+ settable keyboard timeout value, this could alternatively
+ use _rl_input_queued(100000) */
+ if (c == ESC && _rl_input_available ())
rl_execute_next (ESC);
break;
}
- if (c >= 0 && (CTRL_CHAR (c) || META_CHAR (c) || c == RUBOUT) && c != CTRL ('G'))
+#define ENDSRCH_CHAR(c) \
+ ((CTRL_CHAR (c) || META_CHAR (c) || (c) == RUBOUT) && ((c) != CTRL ('G')))
+
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
{
+ if (c >= 0 && strlen (mb) == 1 && ENDSRCH_CHAR (c))
+ {
+ /* This sets rl_pending_input to c; it will be picked up the next
+ time rl_read_key is called. */
+ rl_execute_next (c);
+ break;
+ }
+ }
+ else
+#endif
+ if (c >= 0 && ENDSRCH_CHAR (c))
+ {
+ /* This sets rl_pending_input to c; it will be picked up the next
+ time rl_read_key is called. */
rl_execute_next (c);
break;
}
{
case -1:
if (search_string_index == 0)
- continue;
+ {
+ if (last_isearch_string)
+ {
+ search_string_size = 64 + last_isearch_string_len;
+ search_string = (char *)xrealloc (search_string, search_string_size);
+ strcpy (search_string, last_isearch_string);
+ search_string_index = last_isearch_string_len;
+ rl_display_search (search_string, reverse, -1);
+ break;
+ }
+ continue;
+ }
else if (reverse)
--line_index;
else if (line_index != sline_len)
++line_index;
else
- ding ();
+ rl_ding ();
break;
/* switch directions */
reverse = direction < 0;
break;
- case CTRL ('G'):
- strcpy (rl_line_buffer, lines[orig_line]);
+ /* delete character from search string. */
+ case -3: /* C-H, DEL */
+ /* This is tricky. To do this right, we need to keep a
+ stack of search positions for the current search, with
+ sentinels marking the beginning and end. But this will
+ do until we have a real isearch-undo. */
+ if (search_string_index == 0)
+ rl_ding ();
+ else
+ search_string[--search_string_index] = '\0';
+
+ break;
+
+ case -4: /* C-G */
+ rl_replace_line (lines[orig_line], 0);
rl_point = orig_point;
- rl_end = strlen (rl_line_buffer);
+ rl_mark = orig_mark;
rl_restore_prompt();
rl_clear_message ();
if (allocated_line)
free (allocated_line);
free (lines);
+ RL_UNSETSTATE(RL_STATE_ISEARCH);
return 0;
-#if 0
- /* delete character from search string. */
- case -3:
- if (search_string_index == 0)
- ding ();
- else
+ case -5: /* C-W */
+ /* skip over portion of line we already matched */
+ wstart = rl_point + search_string_index;
+ if (wstart >= rl_end)
+ {
+ rl_ding ();
+ break;
+ }
+
+ /* if not in a word, move to one. */
+ if (rl_alphabetic(rl_line_buffer[wstart]) == 0)
+ {
+ rl_ding ();
+ break;
+ }
+ n = wstart;
+ while (n < rl_end && rl_alphabetic(rl_line_buffer[n]))
+ n++;
+ wlen = n - wstart + 1;
+ if (search_string_index + wlen + 1 >= search_string_size)
{
- search_string[--search_string_index] = '\0';
- /* This is tricky. To do this right, we need to keep a
- stack of search positions for the current search, with
- sentinels marking the beginning and end. */
+ search_string_size += wlen + 1;
+ search_string = (char *)xrealloc (search_string, search_string_size);
}
+ for (; wstart < n; wstart++)
+ search_string[search_string_index++] = rl_line_buffer[wstart];
+ search_string[search_string_index] = '\0';
+ break;
+
+ case -6: /* C-Y */
+ /* skip over portion of line we already matched */
+ wstart = rl_point + search_string_index;
+ if (wstart >= rl_end)
+ {
+ rl_ding ();
+ break;
+ }
+ n = rl_end - wstart + 1;
+ if (search_string_index + n + 1 >= search_string_size)
+ {
+ search_string_size += n + 1;
+ search_string = (char *)xrealloc (search_string, search_string_size);
+ }
+ for (n = wstart; n < rl_end; n++)
+ search_string[search_string_index++] = rl_line_buffer[n];
+ search_string[search_string_index] = '\0';
break;
-#endif
default:
/* Add character to search string and continue search. */
if (search_string_index + 2 >= search_string_size)
{
search_string_size += 128;
- search_string = xrealloc (search_string, search_string_size);
+ search_string = (char *)xrealloc (search_string, search_string_size);
+ }
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ int j, l;
+ for (j = 0, l = strlen (mb); j < l; )
+ search_string[search_string_index++] = mb[j++];
}
- search_string[search_string_index++] = c;
+ else
+#endif
+ search_string[search_string_index++] = c;
search_string[search_string_index] = '\0';
break;
}
if (failed)
{
/* We cannot find the search string. Ding the bell. */
- ding ();
+ rl_ding ();
i = last_found_line;
continue; /* XXX - was break */
}
the location. */
if (found)
{
- int line_len;
-
prev_line_found = lines[i];
- line_len = strlen (lines[i]);
-
- if (line_len >= rl_line_buffer_len)
- rl_extend_line_buffer (line_len);
-
- strcpy (rl_line_buffer, lines[i]);
+ rl_replace_line (lines[i], 0);
rl_point = line_index;
- rl_end = line_len;
last_found_line = i;
rl_display_search (search_string, reverse, (i == orig_line) ? -1 : i);
}
rl_restore_prompt ();
- /* Free the search string. */
- free (search_string);
+ /* Save the search string for possible later use. */
+ FREE (last_isearch_string);
+ last_isearch_string = search_string;
+ last_isearch_string_len = search_string_index;
if (last_found_line < orig_line)
rl_get_previous_history (orig_line - last_found_line, 0);
else
rl_get_next_history (last_found_line - orig_line, 0);
- /* If the string was not found, put point at the end of the line. */
+ /* If the string was not found, put point at the end of the last matching
+ line. If last_found_line == orig_line, we didn't find any matching
+ history lines at all, so put point back in its original position. */
if (line_index < 0)
- line_index = strlen (rl_line_buffer);
+ {
+ if (last_found_line == orig_line)
+ line_index = orig_point;
+ else
+ line_index = strlen (rl_line_buffer);
+ rl_mark = orig_mark;
+ }
+
rl_point = line_index;
+ /* Don't worry about where to put the mark here; rl_get_previous_history
+ and rl_get_next_history take care of it. */
+
rl_clear_message ();
- if (allocated_line)
- free (allocated_line);
+ FREE (allocated_line);
free (lines);
+ RL_UNSETSTATE(RL_STATE_ISEARCH);
+
return 0;
}