+++ /dev/null
-/* isearch.c - incremental searching */
-
-/* **************************************************************** */
-/* */
-/* I-Search and Searching */
-/* */
-/* **************************************************************** */
-
-/* Copyright (C) 1987-2017 Free Software Foundation, Inc.
-
- This file is part of the GNU Readline Library (Readline), a library
- for reading lines of text with interactive input and history editing.
-
- Readline 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 3 of the License, or
- (at your option) any later version.
-
- Readline 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.
-
- You should have received a copy of the GNU General Public License
- along with Readline. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#define READLINE_LIBRARY
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#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;
-
-_rl_search_cxt *_rl_iscxt = 0;
-
-/* Variables imported from other files in the readline library. */
-extern HIST_ENTRY *_rl_saved_line_for_history;
-
-static int rl_search_history PARAMS((int, int));
-
-static _rl_search_cxt *_rl_isearch_init PARAMS((int));
-static void _rl_isearch_fini PARAMS((_rl_search_cxt *));
-
-/* Last line found by the current incremental search, so we don't `find'
- identical lines many times in a row. Now part of isearch context. */
-/* static char *prev_line_found; */
-
-/* Last search string and its length. */
-static char *last_isearch_string;
-static int last_isearch_string_len;
-
-static char * const default_isearch_terminators = "\033\012";
-
-_rl_search_cxt *
-_rl_scxt_alloc (int type, int flags)
-{
- _rl_search_cxt *cxt;
-
- cxt = (_rl_search_cxt *)xmalloc (sizeof (_rl_search_cxt));
-
- cxt->type = type;
- cxt->sflags = flags;
-
- cxt->search_string = 0;
- cxt->search_string_size = cxt->search_string_index = 0;
-
- cxt->lines = 0;
- cxt->allocated_line = 0;
- cxt->hlen = cxt->hindex = 0;
-
- cxt->save_point = rl_point;
- cxt->save_mark = rl_mark;
- cxt->save_line = where_history ();
- cxt->last_found_line = cxt->save_line;
- cxt->prev_line_found = 0;
-
- cxt->save_undo_list = 0;
-
- cxt->keymap = _rl_keymap;
- cxt->okeymap = _rl_keymap;
-
- cxt->history_pos = 0;
- cxt->direction = 0;
-
- cxt->prevc = cxt->lastc = 0;
-
- cxt->sline = 0;
- cxt->sline_len = cxt->sline_index = 0;
-
- cxt->search_terminators = 0;
-
- return cxt;
-}
-
-void
-_rl_scxt_dispose (_rl_search_cxt *cxt, int flags)
-{
- FREE (cxt->search_string);
- FREE (cxt->allocated_line);
- FREE (cxt->lines);
-
- xfree (cxt);
-}
-
-/* Search backwards through the history looking for a string which is typed
- interactively. Start with the current line. */
-int
-rl_reverse_search_history (int sign, int 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 (int sign, int 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 non-zero 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 (char *search_string, int flags, int where)
-{
- char *message;
- int msglen, searchlen;
-
- searchlen = (search_string && *search_string) ? strlen (search_string) : 0;
-
- message = (char *)xmalloc (searchlen + 64);
- msglen = 0;
-
-#if defined (NOTDEF)
- if (where != -1)
- {
- sprintf (message, "[%d]", where + history_base);
- msglen = strlen (message);
- }
-#endif /* NOTDEF */
-
- message[msglen++] = '(';
-
- if (flags & SF_FAILED)
- {
- strcpy (message + msglen, "failed ");
- msglen += 7;
- }
-
- if (flags & SF_REVERSE)
- {
- 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);
- xfree (message);
- (*rl_redisplay_function) ();
-}
-
-static _rl_search_cxt *
-_rl_isearch_init (int direction)
-{
- _rl_search_cxt *cxt;
- register int i;
- HIST_ENTRY **hlist;
-
- cxt = _rl_scxt_alloc (RL_SEARCH_ISEARCH, 0);
- if (direction < 0)
- cxt->sflags |= SF_REVERSE;
-
- cxt->search_terminators = _rl_isearch_terminators ? _rl_isearch_terminators
- : default_isearch_terminators;
-
- /* Create an array of pointers to the lines that we want to search. */
- hlist = history_list ();
- 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. */
- cxt->lines = (char **)xmalloc ((1 + (cxt->hlen = i)) * sizeof (char *));
- for (i = 0; i < cxt->hlen; i++)
- cxt->lines[i] = hlist[i]->line;
-
- if (_rl_saved_line_for_history)
- cxt->lines[i] = _rl_saved_line_for_history->line;
- else
- {
- /* Keep track of this so we can free it. */
- cxt->allocated_line = (char *)xmalloc (1 + strlen (rl_line_buffer));
- strcpy (cxt->allocated_line, &rl_line_buffer[0]);
- cxt->lines[i] = cxt->allocated_line;
- }
-
- cxt->hlen++;
-
- /* The line where we start the search. */
- cxt->history_pos = cxt->save_line;
-
- rl_save_prompt ();
-
- /* Initialize search parameters. */
- cxt->search_string = (char *)xmalloc (cxt->search_string_size = 128);
- cxt->search_string[cxt->search_string_index = 0] = '\0';
-
- /* Normalize DIRECTION into 1 or -1. */
- cxt->direction = (direction >= 0) ? 1 : -1;
-
- cxt->sline = rl_line_buffer;
- cxt->sline_len = strlen (cxt->sline);
- cxt->sline_index = rl_point;
-
- _rl_iscxt = cxt; /* save globally */
-
- return cxt;
-}
-
-static void
-_rl_isearch_fini (_rl_search_cxt *cxt)
-{
- /* First put back the original state. */
- rl_replace_line (cxt->lines[cxt->save_line], 0);
-
- rl_restore_prompt ();
-
- /* Save the search string for possible later use. */
- FREE (last_isearch_string);
- last_isearch_string = cxt->search_string;
- last_isearch_string_len = cxt->search_string_index;
- cxt->search_string = 0;
-
- if (cxt->last_found_line < cxt->save_line)
- rl_get_previous_history (cxt->save_line - cxt->last_found_line, 0);
- else
- rl_get_next_history (cxt->last_found_line - cxt->save_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 (cxt->sline_index < 0)
- {
- if (cxt->last_found_line == cxt->save_line)
- cxt->sline_index = cxt->save_point;
- else
- cxt->sline_index = strlen (rl_line_buffer);
- rl_mark = cxt->save_mark;
- }
-
- rl_point = cxt->sline_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_fix_point (0);
-
- rl_clear_message ();
-}
-
-int
-_rl_search_getchar (_rl_search_cxt *cxt)
-{
- int c;
-
- /* Read a key and decide how to proceed. */
- RL_SETSTATE(RL_STATE_MOREINPUT);
- c = cxt->lastc = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
-
-#if defined (HANDLE_MULTIBYTE)
- /* This ends up with C (and LASTC) being set to the last byte of the
- multibyte character. In most cases c == lastc == mb[0] */
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- c = cxt->lastc = _rl_read_mbstring (cxt->lastc, cxt->mb, MB_LEN_MAX);
-#endif
-
- RL_CHECK_SIGNALS ();
- return c;
-}
-
-#define ENDSRCH_CHAR(c) \
- ((CTRL_CHAR (c) || META_CHAR (c) || (c) == RUBOUT) && ((c) != CTRL ('G')))
-
-/* Process just-read character C according to isearch context CXT. Return
- -1 if the caller should just free the context and return, 0 if we should
- break out of the loop, and 1 if we should continue to read characters. */
-int
-_rl_isearch_dispatch (_rl_search_cxt *cxt, int c)
-{
- int n, wstart, wlen, limit, cval, incr;
- char *paste;
- size_t pastelen;
- int j;
- rl_command_func_t *f;
-
- f = (rl_command_func_t *)NULL;
-
- if (c < 0)
- {
- cxt->sflags |= SF_FAILED;
- cxt->history_pos = cxt->last_found_line;
- return -1;
- }
-
- /* If we are moving into a new keymap, modify cxt->keymap and go on.
- This can be a problem if c == ESC and we want to terminate the
- incremental search, so we check */
- if (c >= 0 && cxt->keymap[c].type == ISKMAP && strchr (cxt->search_terminators, cxt->lastc) == 0)
- {
- /* _rl_keyseq_timeout specified in milliseconds; _rl_input_queued
- takes microseconds, so multiply by 1000. If we don't get any
- additional input and this keymap shadows another function, process
- that key as if it was all we read. */
- if (_rl_keyseq_timeout > 0 &&
- RL_ISSTATE (RL_STATE_CALLBACK) == 0 &&
- RL_ISSTATE (RL_STATE_INPUTPENDING) == 0 &&
- _rl_pushed_input_available () == 0 &&
- ((Keymap)(cxt->keymap[c].function))[ANYOTHERKEY].function &&
- _rl_input_queued (_rl_keyseq_timeout*1000) == 0)
- goto add_character;
-
- cxt->okeymap = cxt->keymap;
- cxt->keymap = FUNCTION_TO_KEYMAP (cxt->keymap, c);
- cxt->sflags |= SF_CHGKMAP;
- /* XXX - we should probably save this sequence, so we can do
- something useful if this doesn't end up mapping to a command we
- interpret here. Right now we just save the most recent character
- that caused the index into a new keymap. */
- cxt->prevc = c;
-#if defined (HANDLE_MULTIBYTE)
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- {
- if (cxt->mb[1] == 0)
- {
- cxt->pmb[0] = c; /* XXX should be == cxt->mb[0] */
- cxt->pmb[1] = '\0';
- }
- else
- memcpy (cxt->pmb, cxt->mb, sizeof (cxt->pmb));
- }
-#endif
- return 1;
- }
-
-add_character:
-
- /* Translate the keys we do something with to opcodes. */
- if (c >= 0 && cxt->keymap[c].type == ISFUNC)
- {
- f = cxt->keymap[c].function;
-
- if (f == rl_reverse_search_history)
- cxt->lastc = (cxt->sflags & SF_REVERSE) ? -1 : -2;
- else if (f == rl_forward_search_history)
- cxt->lastc = (cxt->sflags & SF_REVERSE) ? -2 : -1;
- else if (f == rl_rubout)
- cxt->lastc = -3;
- else if (c == CTRL ('G') || f == rl_abort)
- cxt->lastc = -4;
- else if (c == CTRL ('W') || f == rl_unix_word_rubout) /* XXX */
- cxt->lastc = -5;
- else if (c == CTRL ('Y') || f == rl_yank) /* XXX */
- cxt->lastc = -6;
- else if (f == rl_bracketed_paste_begin)
- cxt->lastc = -7;
- }
-
- /* If we changed the keymap earlier while translating a key sequence into
- a command, restore it now that we've succeeded. */
- if (cxt->sflags & SF_CHGKMAP)
- {
- cxt->keymap = cxt->okeymap;
- cxt->sflags &= ~SF_CHGKMAP;
- /* If we indexed into a new keymap, but didn't map to a command that
- affects the search (lastc > 0), and the character that mapped to a
- new keymap would have ended the search (ENDSRCH_CHAR(cxt->prevc)),
- handle that now as if the previous char would have ended the search
- and we would have read the current character. */
- /* XXX - should we check cxt->mb? */
- if (cxt->lastc > 0 && ENDSRCH_CHAR (cxt->prevc))
- {
- rl_stuff_char (cxt->lastc);
- rl_execute_next (cxt->prevc);
- /* XXX - do we insert everything in cxt->pmb? */
- return (0);
- }
- /* Otherwise, if the current character is mapped to self-insert or
- nothing (i.e., not an editing command), and the previous character
- was a keymap index, then we need to insert both the previous
- character and the current character into the search string. */
- else if (cxt->lastc > 0 && cxt->prevc > 0 &&
- cxt->keymap[cxt->prevc].type == ISKMAP &&
- (f == 0 || f == rl_insert))
- {
- /* Make lastc be the next character read */
- /* XXX - do we insert everything in cxt->mb? */
- rl_execute_next (cxt->lastc);
- /* Dispatch on the previous character (insert into search string) */
- cxt->lastc = cxt->prevc;
-#if defined (HANDLE_MULTIBYTE)
- /* Have to overwrite cxt->mb here because dispatch uses it below */
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- {
- if (cxt->pmb[1] == 0)
- {
- cxt->mb[0] = cxt->lastc; /* == cxt->prevc */
- cxt->mb[1] = '\0';
- }
- else
- memcpy (cxt->mb, cxt->pmb, sizeof (cxt->mb));
- }
-#endif
- cxt->prevc = 0;
- }
- else if (cxt->lastc > 0 && cxt->prevc > 0 && f && f != rl_insert)
- {
- rl_stuff_char (cxt->lastc);
- rl_execute_next (cxt->prevc);
- /* XXX - do we insert everything in cxt->pmb? */
- return (0);
- }
- }
-
- /* 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 (cxt->lastc > 0 && strchr (cxt->search_terminators, cxt->lastc))
- {
- /* 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 (cxt->lastc == ESC && (_rl_pushed_input_available () || _rl_input_available ()))
- rl_execute_next (ESC);
- return (0);
- }
-
-#if defined (HANDLE_MULTIBYTE)
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- {
- if (cxt->lastc >= 0 && (cxt->mb[0] && cxt->mb[1] == '\0') && ENDSRCH_CHAR (cxt->lastc))
- {
- /* This sets rl_pending_input to LASTC; it will be picked up the next
- time rl_read_key is called. */
- rl_execute_next (cxt->lastc);
- return (0);
- }
- }
- else
-#endif
- if (cxt->lastc >= 0 && ENDSRCH_CHAR (cxt->lastc))
- {
- /* This sets rl_pending_input to LASTC; it will be picked up the next
- time rl_read_key is called. */
- rl_execute_next (cxt->lastc);
- return (0);
- }
-
- /* Now dispatch on the character. `Opcodes' affect the search string or
- state. Other characters are added to the string. */
- switch (cxt->lastc)
- {
- /* search again */
- case -1:
- if (cxt->search_string_index == 0)
- {
- if (last_isearch_string)
- {
- cxt->search_string_size = 64 + last_isearch_string_len;
- cxt->search_string = (char *)xrealloc (cxt->search_string, cxt->search_string_size);
- strcpy (cxt->search_string, last_isearch_string);
- cxt->search_string_index = last_isearch_string_len;
- rl_display_search (cxt->search_string, cxt->sflags, -1);
- break;
- }
- return (1);
- }
- else if ((cxt->sflags & SF_REVERSE) && cxt->sline_index >= 0)
- cxt->sline_index--;
- else if (cxt->sline_index != cxt->sline_len)
- cxt->sline_index++;
- else
- rl_ding ();
- break;
-
- /* switch directions */
- case -2:
- cxt->direction = -cxt->direction;
- if (cxt->direction < 0)
- cxt->sflags |= SF_REVERSE;
- else
- cxt->sflags &= ~SF_REVERSE;
- 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 (cxt->search_string_index == 0)
- rl_ding ();
- else if (MB_CUR_MAX == 1 || rl_byte_oriented)
- cxt->search_string[--cxt->search_string_index] = '\0';
- else
- {
- wstart = _rl_find_prev_mbchar (cxt->search_string, cxt->search_string_index, MB_FIND_NONZERO);
- if (wstart >= 0)
- cxt->search_string[cxt->search_string_index = wstart] = '\0';
- else
- cxt->search_string[cxt->search_string_index = 0] = '\0';
- }
-
- if (cxt->search_string_index == 0)
- rl_ding ();
-
- break;
-
- case -4: /* C-G, abort */
- rl_replace_line (cxt->lines[cxt->save_line], 0);
- rl_point = cxt->save_point;
- rl_mark = cxt->save_mark;
- rl_restore_prompt();
- rl_clear_message ();
-
- return -1;
-
- case -5: /* C-W */
- /* skip over portion of line we already matched and yank word */
- wstart = rl_point + cxt->search_string_index;
- if (wstart >= rl_end)
- {
- rl_ding ();
- break;
- }
-
- /* if not in a word, move to one. */
- cval = _rl_char_value (rl_line_buffer, wstart);
- if (_rl_walphabetic (cval) == 0)
- {
- rl_ding ();
- break;
- }
- n = MB_NEXTCHAR (rl_line_buffer, wstart, 1, MB_FIND_NONZERO);;
- while (n < rl_end)
- {
- cval = _rl_char_value (rl_line_buffer, n);
- if (_rl_walphabetic (cval) == 0)
- break;
- n = MB_NEXTCHAR (rl_line_buffer, n, 1, MB_FIND_NONZERO);;
- }
- wlen = n - wstart + 1;
- if (cxt->search_string_index + wlen + 1 >= cxt->search_string_size)
- {
- cxt->search_string_size += wlen + 1;
- cxt->search_string = (char *)xrealloc (cxt->search_string, cxt->search_string_size);
- }
- for (; wstart < n; wstart++)
- cxt->search_string[cxt->search_string_index++] = rl_line_buffer[wstart];
- cxt->search_string[cxt->search_string_index] = '\0';
- break;
-
- case -6: /* C-Y */
- /* skip over portion of line we already matched and yank rest */
- wstart = rl_point + cxt->search_string_index;
- if (wstart >= rl_end)
- {
- rl_ding ();
- break;
- }
- n = rl_end - wstart + 1;
- if (cxt->search_string_index + n + 1 >= cxt->search_string_size)
- {
- cxt->search_string_size += n + 1;
- cxt->search_string = (char *)xrealloc (cxt->search_string, cxt->search_string_size);
- }
- for (n = wstart; n < rl_end; n++)
- cxt->search_string[cxt->search_string_index++] = rl_line_buffer[n];
- cxt->search_string[cxt->search_string_index] = '\0';
- break;
-
- case -7: /* bracketed paste */
- paste = _rl_bracketed_text (&pastelen);
- if (paste == 0 || *paste == 0)
- {
- free (paste);
- break;
- }
- if (cxt->search_string_index + pastelen + 1 >= cxt->search_string_size)
- {
- cxt->search_string_size += pastelen + 2;
- cxt->search_string = (char *)xrealloc (cxt->search_string, cxt->search_string_size);
- }
- strcpy (cxt->search_string + cxt->search_string_index, paste);
- cxt->search_string_index += pastelen;
- free (paste);
- break;
-
- /* Add character to search string and continue search. */
- default:
-#if defined (HANDLE_MULTIBYTE)
- wlen = (cxt->mb[0] == 0 || cxt->mb[1] == 0) ? 1 : RL_STRLEN (cxt->mb);
-#else
- wlen = 1;
-#endif
- if (cxt->search_string_index + wlen + 1 >= cxt->search_string_size)
- {
- cxt->search_string_size += 128; /* 128 much greater than MB_CUR_MAX */
- cxt->search_string = (char *)xrealloc (cxt->search_string, cxt->search_string_size);
- }
-#if defined (HANDLE_MULTIBYTE)
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- {
- int j;
-
- if (cxt->mb[0] == 0 || cxt->mb[1] == 0)
- cxt->search_string[cxt->search_string_index++] = cxt->mb[0];
- else
- for (j = 0; j < wlen; )
- cxt->search_string[cxt->search_string_index++] = cxt->mb[j++];
- }
- else
-#endif
- cxt->search_string[cxt->search_string_index++] = cxt->lastc; /* XXX - was c instead of lastc */
- cxt->search_string[cxt->search_string_index] = '\0';
- break;
- }
-
- for (cxt->sflags &= ~(SF_FOUND|SF_FAILED);; )
- {
- if (cxt->search_string_index == 0)
- {
- cxt->sflags |= SF_FAILED;
- break;
- }
-
- limit = cxt->sline_len - cxt->search_string_index + 1;
-
- /* Search the current line. */
- while ((cxt->sflags & SF_REVERSE) ? (cxt->sline_index >= 0) : (cxt->sline_index < limit))
- {
- if (STREQN (cxt->search_string, cxt->sline + cxt->sline_index, cxt->search_string_index))
- {
- cxt->sflags |= SF_FOUND;
- break;
- }
- else
- cxt->sline_index += cxt->direction;
-
- if (cxt->sline_index < 0)
- {
- cxt->sline_index = 0;
- break;
- }
- }
- if (cxt->sflags & SF_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. */
- cxt->history_pos += cxt->direction;
-
- /* At limit for direction? */
- if ((cxt->sflags & SF_REVERSE) ? (cxt->history_pos < 0) : (cxt->history_pos == cxt->hlen))
- {
- cxt->sflags |= SF_FAILED;
- break;
- }
-
- /* We will need these later. */
- cxt->sline = cxt->lines[cxt->history_pos];
- cxt->sline_len = strlen (cxt->sline);
- }
- while ((cxt->prev_line_found && STREQ (cxt->prev_line_found, cxt->lines[cxt->history_pos])) ||
- (cxt->search_string_index > cxt->sline_len));
-
- if (cxt->sflags & SF_FAILED)
- {
- /* XXX - reset sline_index if < 0 */
- if (cxt->sline_index < 0)
- cxt->sline_index = 0;
- break;
- }
-
- /* Now set up the line for searching... */
- cxt->sline_index = (cxt->sflags & SF_REVERSE) ? cxt->sline_len - cxt->search_string_index : 0;
- }
-
- if (cxt->sflags & SF_FAILED)
- {
- /* We cannot find the search string. Ding the bell. */
- rl_ding ();
- cxt->history_pos = cxt->last_found_line;
- rl_display_search (cxt->search_string, cxt->sflags, (cxt->history_pos == cxt->save_line) ? -1 : cxt->history_pos);
- return 1;
- }
-
- /* 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 (cxt->sflags & SF_FOUND)
- {
- cxt->prev_line_found = cxt->lines[cxt->history_pos];
- rl_replace_line (cxt->lines[cxt->history_pos], 0);
- rl_point = cxt->sline_index;
- cxt->last_found_line = cxt->history_pos;
- rl_display_search (cxt->search_string, cxt->sflags, (cxt->history_pos == cxt->save_line) ? -1 : cxt->history_pos);
- }
-
- return 1;
-}
-
-int
-_rl_isearch_cleanup (_rl_search_cxt *cxt, int r)
-{
- if (r >= 0)
- _rl_isearch_fini (cxt);
- _rl_scxt_dispose (cxt, 0);
- _rl_iscxt = 0;
-
- RL_UNSETSTATE(RL_STATE_ISEARCH);
-
- return (r != 0);
-}
-
-/* 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 (int direction, int invoking_key)
-{
- _rl_search_cxt *cxt; /* local for now, but saved globally */
- int c, r;
-
- RL_SETSTATE(RL_STATE_ISEARCH);
- cxt = _rl_isearch_init (direction);
-
- rl_display_search (cxt->search_string, cxt->sflags, -1);
-
- /* If we are using the callback interface, all we do is set up here and
- return. The key is that we leave RL_STATE_ISEARCH set. */
- if (RL_ISSTATE (RL_STATE_CALLBACK))
- return (0);
-
- r = -1;
- for (;;)
- {
- c = _rl_search_getchar (cxt);
- /* We might want to handle EOF here (c == 0) */
- r = _rl_isearch_dispatch (cxt, cxt->lastc);
- if (r <= 0)
- break;
- }
-
- /* 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. */
- return (_rl_isearch_cleanup (cxt, r));
-}
-
-#if defined (READLINE_CALLBACKS)
-/* Called from the callback functions when we are ready to read a key. The
- callback functions know to call this because RL_ISSTATE(RL_STATE_ISEARCH).
- If _rl_isearch_dispatch finishes searching, this function is responsible
- for turning off RL_STATE_ISEARCH, which it does using _rl_isearch_cleanup. */
-int
-_rl_isearch_callback (_rl_search_cxt *cxt)
-{
- int c, r;
-
- c = _rl_search_getchar (cxt);
- /* We might want to handle EOF here */
- r = _rl_isearch_dispatch (cxt, cxt->lastc);
-
- return (r <= 0) ? _rl_isearch_cleanup (cxt, r) : 0;
-}
-#endif
projects / deliverable / binutils-gdb.git / blobdiff