diff options
Diffstat (limited to 'search.c')
| -rw-r--r-- | search.c | 93 |
1 files changed, 77 insertions, 16 deletions
@@ -1,6 +1,6 @@ /* search.c - code for non-incremental searching in emacs and vi modes. */ -/* Copyright (C) 1992-2009 Free Software Foundation, Inc. +/* Copyright (C) 1992-2013 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. @@ -43,6 +43,7 @@ #include "readline.h" #include "history.h" +#include "histlib.h" #include "rlprivate.h" #include "xmalloc.h" @@ -66,6 +67,8 @@ static char *prev_line_found = (char *) NULL; static int rl_history_search_len; static int rl_history_search_pos; +static int rl_history_search_flags; + static char *history_search_string; static int history_string_size; @@ -74,7 +77,7 @@ static int noninc_search_from_pos PARAMS((char *, int, int)); static int noninc_dosearch PARAMS((char *, int)); static int noninc_search PARAMS((int, int)); static int rl_history_search_internal PARAMS((int, int)); -static void rl_history_search_reinit PARAMS((void)); +static void rl_history_search_reinit PARAMS((int)); static _rl_search_cxt *_rl_nsearch_init PARAMS((int, int)); static int _rl_nsearch_cleanup PARAMS((_rl_search_cxt *, int)); @@ -169,7 +172,8 @@ noninc_dosearch (string, dir) oldpos = where_history (); history_set_pos (noninc_history_pos); - entry = current_history (); + entry = current_history (); /* will never be NULL after successful search */ + #if defined (VI_MODE) if (rl_editing_mode != vi_mode) #endif @@ -210,7 +214,7 @@ _rl_nsearch_init (dir, pchar) rl_end = rl_point = 0; p = _rl_make_prompt_for_search (pchar ? pchar : ':'); - rl_message ("%s", p, 0); + rl_message ("%s", p); xfree (p); RL_SETSTATE(RL_STATE_NSEARCH); @@ -453,15 +457,19 @@ rl_history_search_internal (count, dir) { HIST_ENTRY *temp; int ret, oldpos; + char *t; rl_maybe_save_line (); temp = (HIST_ENTRY *)NULL; - /* Search COUNT times through the history for a line whose prefix - matches history_search_string. When this loop finishes, TEMP, - if non-null, is the history line to copy into the line buffer. */ + /* Search COUNT times through the history for a line matching + history_search_string. If history_search_string[0] == '^', the + line must match from the start; otherwise any substring can match. + When this loop finishes, TEMP, if non-null, is the history line to + copy into the line buffer. */ while (count) { + RL_CHECK_SIGNALS (); ret = noninc_search_from_pos (history_search_string, rl_history_search_pos + dir, dir); if (ret == -1) break; @@ -470,7 +478,7 @@ rl_history_search_internal (count, dir) rl_history_search_pos = ret; oldpos = where_history (); history_set_pos (rl_history_search_pos); - temp = current_history (); + temp = current_history (); /* will never be NULL after successful search */ history_set_pos (oldpos); /* Don't find multiple instances of the same line. */ @@ -505,35 +513,49 @@ rl_history_search_internal (count, dir) /* Copy the line we found into the current line buffer. */ make_history_line_current (temp); - rl_point = rl_history_search_len; + if (rl_history_search_flags & ANCHORED_SEARCH) + rl_point = rl_history_search_len; /* easy case */ + else + { + t = strstr (rl_line_buffer, history_search_string); + rl_point = t ? (int)(t - rl_line_buffer) + rl_history_search_len : rl_end; + } rl_mark = rl_end; return 0; } static void -rl_history_search_reinit () +rl_history_search_reinit (flags) + int flags; { + int sind; + rl_history_search_pos = where_history (); rl_history_search_len = rl_point; + rl_history_search_flags = flags; + prev_line_found = (char *)NULL; if (rl_point) { + /* Allocate enough space for anchored and non-anchored searches */ if (rl_history_search_len >= history_string_size - 2) { history_string_size = rl_history_search_len + 2; history_search_string = (char *)xrealloc (history_search_string, history_string_size); } - history_search_string[0] = '^'; - strncpy (history_search_string + 1, rl_line_buffer, rl_point); - history_search_string[rl_point + 1] = '\0'; + sind = 0; + if (flags & ANCHORED_SEARCH) + history_search_string[sind++] = '^'; + strncpy (history_search_string + sind, rl_line_buffer, rl_point); + history_search_string[rl_point + sind] = '\0'; } _rl_free_saved_history_line (); } /* Search forward in the history for the string of characters from the start of the line to rl_point. This is a non-incremental - search. */ + search. The search is anchored to the beginning of the history line. */ int rl_history_search_forward (count, ignore) int count, ignore; @@ -543,7 +565,7 @@ rl_history_search_forward (count, ignore) if (rl_last_func != rl_history_search_forward && rl_last_func != rl_history_search_backward) - rl_history_search_reinit (); + rl_history_search_reinit (ANCHORED_SEARCH); if (rl_history_search_len == 0) return (rl_get_next_history (count, ignore)); @@ -562,7 +584,46 @@ rl_history_search_backward (count, ignore) if (rl_last_func != rl_history_search_forward && rl_last_func != rl_history_search_backward) - rl_history_search_reinit (); + rl_history_search_reinit (ANCHORED_SEARCH); + + if (rl_history_search_len == 0) + return (rl_get_previous_history (count, ignore)); + return (rl_history_search_internal (abs (count), (count > 0) ? -1 : 1)); +} + +/* Search forward in the history for the string of characters + from the start of the line to rl_point. This is a non-incremental + search. The search succeeds if the search string is present anywhere + in the history line. */ +int +rl_history_substr_search_forward (count, ignore) + int count, ignore; +{ + if (count == 0) + return (0); + + if (rl_last_func != rl_history_substr_search_forward && + rl_last_func != rl_history_substr_search_backward) + rl_history_search_reinit (NON_ANCHORED_SEARCH); + + if (rl_history_search_len == 0) + return (rl_get_next_history (count, ignore)); + return (rl_history_search_internal (abs (count), (count > 0) ? 1 : -1)); +} + +/* Search backward through the history for the string of characters + from the start of the line to rl_point. This is a non-incremental + search. */ +int +rl_history_substr_search_backward (count, ignore) + int count, ignore; +{ + if (count == 0) + return (0); + + if (rl_last_func != rl_history_substr_search_forward && + rl_last_func != rl_history_substr_search_backward) + rl_history_search_reinit (NON_ANCHORED_SEARCH); if (rl_history_search_len == 0) return (rl_get_previous_history (count, ignore)); |