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-rw-r--r--MSVC/readline/isearch.c1116
1 files changed, 558 insertions, 558 deletions
diff --git a/MSVC/readline/isearch.c b/MSVC/readline/isearch.c
index a9d28bd..ebd03ce 100644
--- a/MSVC/readline/isearch.c
+++ b/MSVC/readline/isearch.c
@@ -1,558 +1,558 @@
-/* **************************************************************** */
-/* */
-/* I-Search and Searching */
-/* */
-/* **************************************************************** */
-
-/* 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
- for it.
-
- 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 2, 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.
-
- 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,
- 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
-#define READLINE_LIBRARY
-
-#include "config.h"
-
-#include <sys/types.h>
-
-#include <stdio.h>
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# include "ansi_stdlib.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. */
-char *_rl_isearch_terminators = (char *)NULL;
-
-/* Variables imported from other files in the readline library. */
-extern HIST_ENTRY *_rl_saved_line_for_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
-rl_reverse_search_history (sign, key)
- int sign, key;
-{
- return (rl_search_history (-sign, key));
-}
-
-/* Search forwards through the history looking for a string which is typed
- interactively. Start with the current line. */
-int
-rl_forward_search_history (sign, key)
- int sign, key;
-{
- return (rl_search_history (sign, key));
-}
-
-/* Display the current state of the search in the echo-area.
- SEARCH_STRING contains the string that is being searched for,
- DIRECTION is zero for forward, or 1 for reverse,
- WHERE is the history list number of the current line. If it is
- -1, then this line is the starting one. */
-static void
-rl_display_search (search_string, reverse_p, where)
- char *search_string;
- int reverse_p, where;
-{
- char *message;
- int msglen, searchlen;
-
- searchlen = (search_string && *search_string) ? strlen (search_string) : 0;
-
- message = (char *)xmalloc (searchlen + 33);
- msglen = 0;
-
-#if defined (NOTDEF)
- if (where != -1)
- {
- sprintf (message, "[%d]", where + history_base);
- msglen = strlen (message);
- }
-#endif /* NOTDEF */
-
- message[msglen++] = '(';
-
- if (reverse_p)
- {
- strcpy (message + msglen, "reverse-");
- msglen += 8;
- }
-
- strcpy (message + msglen, "i-search)`");
- msglen += 10;
-
- if (search_string)
- {
- strcpy (message + msglen, search_string);
- msglen += searchlen;
- }
-
- strcpy (message + msglen, "': ");
-
- rl_message ("%s", message);
- free (message);
- (*rl_redisplay_function) ();
-}
-
-/* Search through the history looking for an interactively typed string.
- This is analogous to i-search. We start the search in the current line.
- DIRECTION is which direction to search; >= 0 means forward, < 0 means
- backwards. */
-static int
-rl_search_history (direction, invoking_key)
- int direction, invoking_key;
-{
- /* The string that the user types in to search for. */
- char *search_string;
-
- /* The current length of SEARCH_STRING. */
- int search_string_index;
-
- /* The amount of space that SEARCH_STRING has allocated to it. */
- int search_string_size;
-
- /* The list of lines to search through. */
- char **lines, *allocated_line;
-
- /* The length of LINES. */
- int hlen;
-
- /* Where we get LINES from. */
- HIST_ENTRY **hlist;
-
- register int i;
- 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;
-
- /* Offset in that line. */
- int line_index;
-
- /* Non-zero if we are doing a reverse search. */
- int reverse;
-
- /* 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. */
- 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
- : default_isearch_terminators;
-
- /* Create an arrary of pointers to the lines that we want to search. */
- rl_maybe_replace_line ();
- i = 0;
- if (hlist)
- for (i = 0; hlist[i]; i++);
-
- /* Allocate space for this many lines, +1 for the current input line,
- and remember those lines. */
- lines = (char **)xmalloc ((1 + (hlen = i)) * sizeof (char *));
- for (i = 0; i < hlen; i++)
- lines[i] = hlist[i]->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 = (char *)xmalloc (1 + strlen (rl_line_buffer));
- strcpy (allocated_line, &rl_line_buffer[0]);
- lines[i] = allocated_line;
- }
-
- hlen++;
-
- /* The line where we start the search. */
- i = orig_line;
-
- rl_save_prompt ();
-
- /* Initialize search parameters. */
- search_string = (char *)xmalloc (search_string_size = 128);
- *search_string = '\0';
- search_string_index = 0;
- prev_line_found = (char *)0; /* XXX */
-
- /* Normalize DIRECTION into 1 or -1. */
- direction = (direction >= 0) ? 1 : -1;
-
- rl_display_search (search_string, reverse, -1);
-
- sline = rl_line_buffer;
- sline_len = strlen (sline);
- line_index = rl_point;
-
- found = failed = 0;
- for (;;)
- {
- 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 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;
-
- if (f == rl_reverse_search_history)
- 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;
- }
-
- /* 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))
- {
- /* 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.
- 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;
- }
-
-#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;
- }
-
- switch (c)
- {
- case -1:
- if (search_string_index == 0)
- {
- 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
- rl_ding ();
- break;
-
- /* switch directions */
- case -2:
- direction = -direction;
- reverse = direction < 0;
- break;
-
- /* 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_mark = orig_mark;
- rl_restore_prompt();
- rl_clear_message ();
- if (allocated_line)
- free (allocated_line);
- free (lines);
- RL_UNSETSTATE(RL_STATE_ISEARCH);
- return 0;
-
- 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_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;
-
- default:
- /* Add character to search string and continue search. */
- if (search_string_index + 2 >= search_string_size)
- {
- search_string_size += 128;
- 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++];
- }
- else
-#endif
- search_string[search_string_index++] = c;
- search_string[search_string_index] = '\0';
- break;
- }
-
- for (found = failed = 0;;)
- {
- int limit = sline_len - search_string_index + 1;
-
- /* Search the current line. */
- while (reverse ? (line_index >= 0) : (line_index < limit))
- {
- if (STREQN (search_string, sline + line_index, search_string_index))
- {
- found++;
- break;
- }
- else
- line_index += direction;
- }
- if (found)
- break;
-
- /* Move to the next line, but skip new copies of the line
- we just found and lines shorter than the string we're
- searching for. */
- do
- {
- /* Move to the next line. */
- i += direction;
-
- /* At limit for direction? */
- if (reverse ? (i < 0) : (i == hlen))
- {
- failed++;
- break;
- }
-
- /* We will need these later. */
- sline = lines[i];
- sline_len = strlen (sline);
- }
- while ((prev_line_found && STREQ (prev_line_found, lines[i])) ||
- (search_string_index > sline_len));
-
- if (failed)
- break;
-
- /* Now set up the line for searching... */
- line_index = reverse ? sline_len - search_string_index : 0;
- }
-
- if (failed)
- {
- /* We cannot find the search string. Ding the bell. */
- rl_ding ();
- i = last_found_line;
- continue; /* XXX - was break */
- }
-
- /* We have found the search string. Just display it. But don't
- actually move there in the history list until the user accepts
- the location. */
- if (found)
- {
- prev_line_found = lines[i];
- rl_replace_line (lines[i], 0);
- rl_point = line_index;
- last_found_line = i;
- rl_display_search (search_string, reverse, (i == orig_line) ? -1 : i);
- }
- }
-
- /* The searching is over. The user may have found the string that she
- was looking for, or else she may have exited a failing search. If
- LINE_INDEX is -1, then that shows that the string searched for was
- not found. We use this to determine where to place rl_point. */
-
- /* First put back the original state. */
- strcpy (rl_line_buffer, lines[orig_line]);
-
- rl_restore_prompt ();
-
- /* 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 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)
- {
- 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 ();
-
- FREE (allocated_line);
- free (lines);
-
- RL_UNSETSTATE(RL_STATE_ISEARCH);
-
- return 0;
-}
+/* **************************************************************** */
+/* */
+/* I-Search and Searching */
+/* */
+/* **************************************************************** */
+
+/* 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
+ for it.
+
+ 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 2, 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.
+
+ 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,
+ 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+#define READLINE_LIBRARY
+
+#include "config.h"
+
+#include <sys/types.h>
+
+#include <stdio.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.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. */
+char *_rl_isearch_terminators = (char *)NULL;
+
+/* Variables imported from other files in the readline library. */
+extern HIST_ENTRY *_rl_saved_line_for_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
+rl_reverse_search_history (sign, key)
+ int sign, key;
+{
+ return (rl_search_history (-sign, key));
+}
+
+/* Search forwards through the history looking for a string which is typed
+ interactively. Start with the current line. */
+int
+rl_forward_search_history (sign, key)
+ int sign, key;
+{
+ return (rl_search_history (sign, key));
+}
+
+/* Display the current state of the search in the echo-area.
+ SEARCH_STRING contains the string that is being searched for,
+ DIRECTION is zero for forward, or 1 for reverse,
+ WHERE is the history list number of the current line. If it is
+ -1, then this line is the starting one. */
+static void
+rl_display_search (search_string, reverse_p, where)
+ char *search_string;
+ int reverse_p, where;
+{
+ char *message;
+ int msglen, searchlen;
+
+ searchlen = (search_string && *search_string) ? strlen (search_string) : 0;
+
+ message = (char *)xmalloc (searchlen + 33);
+ msglen = 0;
+
+#if defined (NOTDEF)
+ if (where != -1)
+ {
+ sprintf (message, "[%d]", where + history_base);
+ msglen = strlen (message);
+ }
+#endif /* NOTDEF */
+
+ message[msglen++] = '(';
+
+ if (reverse_p)
+ {
+ strcpy (message + msglen, "reverse-");
+ msglen += 8;
+ }
+
+ strcpy (message + msglen, "i-search)`");
+ msglen += 10;
+
+ if (search_string)
+ {
+ strcpy (message + msglen, search_string);
+ msglen += searchlen;
+ }
+
+ strcpy (message + msglen, "': ");
+
+ rl_message ("%s", message);
+ free (message);
+ (*rl_redisplay_function) ();
+}
+
+/* Search through the history looking for an interactively typed string.
+ This is analogous to i-search. We start the search in the current line.
+ DIRECTION is which direction to search; >= 0 means forward, < 0 means
+ backwards. */
+static int
+rl_search_history (direction, invoking_key)
+ int direction, invoking_key;
+{
+ /* The string that the user types in to search for. */
+ char *search_string;
+
+ /* The current length of SEARCH_STRING. */
+ int search_string_index;
+
+ /* The amount of space that SEARCH_STRING has allocated to it. */
+ int search_string_size;
+
+ /* The list of lines to search through. */
+ char **lines, *allocated_line;
+
+ /* The length of LINES. */
+ int hlen;
+
+ /* Where we get LINES from. */
+ HIST_ENTRY **hlist;
+
+ register int i;
+ 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;
+
+ /* Offset in that line. */
+ int line_index;
+
+ /* Non-zero if we are doing a reverse search. */
+ int reverse;
+
+ /* 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. */
+ 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
+ : default_isearch_terminators;
+
+ /* Create an arrary of pointers to the lines that we want to search. */
+ rl_maybe_replace_line ();
+ i = 0;
+ if (hlist)
+ for (i = 0; hlist[i]; i++);
+
+ /* Allocate space for this many lines, +1 for the current input line,
+ and remember those lines. */
+ lines = (char **)xmalloc ((1 + (hlen = i)) * sizeof (char *));
+ for (i = 0; i < hlen; i++)
+ lines[i] = hlist[i]->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 = (char *)xmalloc (1 + strlen (rl_line_buffer));
+ strcpy (allocated_line, &rl_line_buffer[0]);
+ lines[i] = allocated_line;
+ }
+
+ hlen++;
+
+ /* The line where we start the search. */
+ i = orig_line;
+
+ rl_save_prompt ();
+
+ /* Initialize search parameters. */
+ search_string = (char *)xmalloc (search_string_size = 128);
+ *search_string = '\0';
+ search_string_index = 0;
+ prev_line_found = (char *)0; /* XXX */
+
+ /* Normalize DIRECTION into 1 or -1. */
+ direction = (direction >= 0) ? 1 : -1;
+
+ rl_display_search (search_string, reverse, -1);
+
+ sline = rl_line_buffer;
+ sline_len = strlen (sline);
+ line_index = rl_point;
+
+ found = failed = 0;
+ for (;;)
+ {
+ 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 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;
+
+ if (f == rl_reverse_search_history)
+ 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;
+ }
+
+ /* 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))
+ {
+ /* 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.
+ 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;
+ }
+
+#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;
+ }
+
+ switch (c)
+ {
+ case -1:
+ if (search_string_index == 0)
+ {
+ 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
+ rl_ding ();
+ break;
+
+ /* switch directions */
+ case -2:
+ direction = -direction;
+ reverse = direction < 0;
+ break;
+
+ /* 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_mark = orig_mark;
+ rl_restore_prompt();
+ rl_clear_message ();
+ if (allocated_line)
+ free (allocated_line);
+ free (lines);
+ RL_UNSETSTATE(RL_STATE_ISEARCH);
+ return 0;
+
+ 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_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;
+
+ default:
+ /* Add character to search string and continue search. */
+ if (search_string_index + 2 >= search_string_size)
+ {
+ search_string_size += 128;
+ 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++];
+ }
+ else
+#endif
+ search_string[search_string_index++] = c;
+ search_string[search_string_index] = '\0';
+ break;
+ }
+
+ for (found = failed = 0;;)
+ {
+ int limit = sline_len - search_string_index + 1;
+
+ /* Search the current line. */
+ while (reverse ? (line_index >= 0) : (line_index < limit))
+ {
+ if (STREQN (search_string, sline + line_index, search_string_index))
+ {
+ found++;
+ break;
+ }
+ else
+ line_index += direction;
+ }
+ if (found)
+ break;
+
+ /* Move to the next line, but skip new copies of the line
+ we just found and lines shorter than the string we're
+ searching for. */
+ do
+ {
+ /* Move to the next line. */
+ i += direction;
+
+ /* At limit for direction? */
+ if (reverse ? (i < 0) : (i == hlen))
+ {
+ failed++;
+ break;
+ }
+
+ /* We will need these later. */
+ sline = lines[i];
+ sline_len = strlen (sline);
+ }
+ while ((prev_line_found && STREQ (prev_line_found, lines[i])) ||
+ (search_string_index > sline_len));
+
+ if (failed)
+ break;
+
+ /* Now set up the line for searching... */
+ line_index = reverse ? sline_len - search_string_index : 0;
+ }
+
+ if (failed)
+ {
+ /* We cannot find the search string. Ding the bell. */
+ rl_ding ();
+ i = last_found_line;
+ continue; /* XXX - was break */
+ }
+
+ /* We have found the search string. Just display it. But don't
+ actually move there in the history list until the user accepts
+ the location. */
+ if (found)
+ {
+ prev_line_found = lines[i];
+ rl_replace_line (lines[i], 0);
+ rl_point = line_index;
+ last_found_line = i;
+ rl_display_search (search_string, reverse, (i == orig_line) ? -1 : i);
+ }
+ }
+
+ /* The searching is over. The user may have found the string that she
+ was looking for, or else she may have exited a failing search. If
+ LINE_INDEX is -1, then that shows that the string searched for was
+ not found. We use this to determine where to place rl_point. */
+
+ /* First put back the original state. */
+ strcpy (rl_line_buffer, lines[orig_line]);
+
+ rl_restore_prompt ();
+
+ /* 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 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)
+ {
+ 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 ();
+
+ FREE (allocated_line);
+ free (lines);
+
+ RL_UNSETSTATE(RL_STATE_ISEARCH);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 17:46:26 +0000