diff options
Diffstat (limited to 'isearch.c')
| -rw-r--r-- | isearch.c | 173 |
1 files changed, 130 insertions, 43 deletions
@@ -4,7 +4,7 @@ /* */ /* **************************************************************** */ -/* 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 @@ -45,6 +45,8 @@ #endif #include "rldefs.h" +#include "rlmbutil.h" + #include "readline.h" #include "history.h" @@ -165,8 +167,12 @@ rl_search_history (direction, invoking_key) 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; @@ -184,6 +190,7 @@ rl_search_history (direction, invoking_key) 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 (); @@ -246,6 +253,12 @@ rl_search_history (direction, invoking_key) 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; @@ -254,33 +267,53 @@ rl_search_history (direction, invoking_key) 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. */ @@ -318,10 +351,23 @@ rl_search_history (direction, invoking_key) 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) @@ -330,20 +376,53 @@ rl_search_history (direction, invoking_key) RL_UNSETSTATE(RL_STATE_ISEARCH); return 0; -#if 0 - /* delete character from search string. */ - case -3: - if (search_string_index == 0) - rl_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) { - 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. */ + 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; -#endif default: /* Add character to search string and continue search. */ @@ -352,7 +431,16 @@ rl_search_history (direction, invoking_key) search_string_size += 128; search_string = (char *)xrealloc (search_string, search_string_size); } - search_string[search_string_index++] = c; +#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; } @@ -417,17 +505,9 @@ rl_search_history (direction, invoking_key) 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); } @@ -443,25 +523,32 @@ rl_search_history (direction, invoking_key) rl_restore_prompt (); -#if 1 /* Save the search string for possible later use. */ FREE (last_isearch_string); last_isearch_string = search_string; last_isearch_string_len = search_string_index; -#else - /* Free the search string. */ - free (search_string); -#endif 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 (); FREE (allocated_line); |