diff options
Diffstat (limited to 'complete.c')
| -rw-r--r-- | complete.c | 313 |
1 files changed, 279 insertions, 34 deletions
@@ -1,24 +1,24 @@ /* complete.c -- filename completion for readline. */ -/* Copyright (C) 1987-2005 Free Software Foundation, Inc. +/* Copyright (C) 1987-2009 Free Software Foundation, Inc. - This file is part of the GNU Readline Library, a library for - reading lines of text with interactive input and history editing. + This file is part of the GNU Readline Library (Readline), a library + for reading lines of text with interactive input and history editing. - The GNU Readline 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 + 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. - The GNU Readline 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 + 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. - 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. */ + 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) @@ -110,8 +110,8 @@ static int get_y_or_n PARAMS((int)); static int _rl_internal_pager PARAMS((int)); static char *printable_part PARAMS((char *)); static int fnwidth PARAMS((const char *)); -static int fnprint PARAMS((const char *)); -static int print_filename PARAMS((char *, char *)); +static int fnprint PARAMS((const char *, int)); +static int print_filename PARAMS((char *, char *, int)); static char **gen_completion_matches PARAMS((char *, int, int, rl_compentry_func_t *, int, int)); @@ -164,6 +164,12 @@ int _rl_completion_case_fold; Unix) when doing filename completion. */ int _rl_match_hidden_files = 1; +/* Length in characters of a common prefix replaced with an ellipsis (`...') + when displaying completion matches. Matches whose printable portion has + more than this number of displaying characters in common will have the common + display prefix replaced with an ellipsis. */ +int _rl_completion_prefix_display_length = 0; + /* Global variables available to applications using readline. */ #if defined (VISIBLE_STATS) @@ -188,6 +194,10 @@ int rl_complete_with_tilde_expansion = 0; completer. */ rl_compentry_func_t *rl_completion_entry_function = (rl_compentry_func_t *)NULL; +/* Pointer to generator function for rl_menu_complete (). NULL means to use + *rl_completion_entry_function (see above). */ +rl_compentry_func_t *rl_menu_completion_entry_function = (rl_compentry_func_t *)NULL; + /* Pointer to alternative function to create matches. Function is called with TEXT, START, and END. START and END are indices in RL_LINE_BUFFER saying what the boundaries @@ -325,11 +335,20 @@ int rl_completion_mark_symlink_dirs; /* If non-zero, inhibit completion (temporarily). */ int rl_inhibit_completion; +/* Set to the last key used to invoke one of the completion functions */ +int rl_completion_invoking_key; + +/* If non-zero, sort the completion matches. On by default. */ +int rl_sort_completion_matches = 1; + /* Variables local to this file. */ /* Local variable states what happened during the last completion attempt. */ static int completion_changed_buffer; +/* The result of the query to the user about displaying completion matches */ +static int completion_y_or_n; + /*************************************/ /* */ /* Bindable completion functions */ @@ -343,6 +362,8 @@ int rl_complete (ignore, invoking_key) int ignore, invoking_key; { + rl_completion_invoking_key = invoking_key; + if (rl_inhibit_completion) return (_rl_insert_char (ignore, invoking_key)); else if (rl_last_func == rl_complete && !completion_changed_buffer) @@ -360,6 +381,7 @@ int rl_possible_completions (ignore, invoking_key) int ignore, invoking_key; { + rl_completion_invoking_key = invoking_key; return (rl_complete_internal ('?')); } @@ -367,6 +389,7 @@ int rl_insert_completions (ignore, invoking_key) int ignore, invoking_key; { + rl_completion_invoking_key = invoking_key; return (rl_complete_internal ('*')); } @@ -395,6 +418,14 @@ rl_completion_mode (cfunc) /* */ /************************************/ +/* Reset readline state on a signal or other event. */ +void +_rl_reset_completion_state () +{ + rl_completion_found_quote = 0; + rl_completion_quote_character = 0; +} + /* Set default values for readline word completion. These are the variables that application completion functions can change or inspect. */ static void @@ -406,6 +437,7 @@ set_completion_defaults (what_to_do) rl_filename_quoting_desired = 1; rl_completion_type = what_to_do; rl_completion_suppress_append = rl_completion_suppress_quote = 0; + rl_completion_append_character = ' '; /* The completion entry function may optionally change this. */ rl_completion_mark_symlink_dirs = _rl_complete_mark_symlink_dirs; @@ -481,6 +513,13 @@ stat_char (filename) struct stat finfo; int character, r; + /* Short-circuit a //server on cygwin, since that will always behave as + a directory. */ +#if __CYGWIN__ + if (filename[0] == '/' && filename[1] == '/' && strchr (filename+2, '/') == 0) + return '/'; +#endif + #if defined (HAVE_LSTAT) && defined (S_ISLNK) r = lstat (filename, &finfo); #else @@ -581,7 +620,7 @@ fnwidth (string) width = pos = 0; while (string[pos]) { - if (CTRL_CHAR (*string) || *string == RUBOUT) + if (CTRL_CHAR (string[pos]) || string[pos] == RUBOUT) { width += 2; pos++; @@ -614,17 +653,20 @@ fnwidth (string) return width; } +#define ELLIPSIS_LEN 3 + static int -fnprint (to_print) +fnprint (to_print, prefix_bytes) const char *to_print; + int prefix_bytes; { - int printed_len; + int printed_len, w; const char *s; #if defined (HANDLE_MULTIBYTE) mbstate_t ps; const char *end; size_t tlen; - int width, w; + int width; wchar_t wc; end = to_print + strlen (to_print) + 1; @@ -632,7 +674,23 @@ fnprint (to_print) #endif printed_len = 0; - s = to_print; + + /* Don't print only the ellipsis if the common prefix is one of the + possible completions */ + if (to_print[prefix_bytes] == '\0') + prefix_bytes = 0; + + if (prefix_bytes) + { + char ellipsis; + + ellipsis = (to_print[prefix_bytes] == '.') ? '_' : '.'; + for (w = 0; w < ELLIPSIS_LEN; w++) + putc (ellipsis, rl_outstream); + printed_len = ELLIPSIS_LEN; + } + + s = to_print + prefix_bytes; while (*s) { if (CTRL_CHAR (*s)) @@ -691,14 +749,15 @@ fnprint (to_print) filenames. Return the number of characters we output. */ static int -print_filename (to_print, full_pathname) +print_filename (to_print, full_pathname, prefix_bytes) char *to_print, *full_pathname; + int prefix_bytes; { int printed_len, extension_char, slen, tlen; char *s, c, *new_full_pathname, *dn; extension_char = 0; - printed_len = fnprint (to_print); + printed_len = fnprint (to_print, prefix_bytes); #if defined (VISIBLE_STATS) if (rl_filename_completion_desired && (rl_visible_stats || _rl_complete_mark_directories)) @@ -960,7 +1019,9 @@ gen_completion_matches (text, start, end, our_func, found_quote, quote_char) variable rl_attempted_completion_function. */ if (rl_attempted_completion_function) { + _rl_interrupt_immediately++; matches = (*rl_attempted_completion_function) (text, start, end); + _rl_interrupt_immediately--; if (matches || rl_attempted_completion_over) { @@ -992,7 +1053,7 @@ remove_duplicate_matches (matches) /* Sort the array without matches[0], since we need it to stay in place no matter what. */ - if (i) + if (i && rl_sort_completion_matches) qsort (matches+1, i-1, sizeof (char *), (QSFUNC *)_rl_qsort_string_compare); /* Remember the lowest common denominator for it may be unique. */ @@ -1256,8 +1317,24 @@ rl_display_match_list (matches, len, max) int len, max; { int count, limit, printed_len, lines; - int i, j, k, l; - char *temp; + int i, j, k, l, common_length, sind; + char *temp, *t; + + /* Find the length of the prefix common to all items: length as displayed + characters (common_length) and as a byte index into the matches (sind) */ + common_length = sind = 0; + if (_rl_completion_prefix_display_length > 0) + { + t = printable_part (matches[0]); + temp = strrchr (t, '/'); + common_length = temp ? fnwidth (temp) : fnwidth (t); + sind = temp ? strlen (temp) : strlen (t); + + if (common_length > _rl_completion_prefix_display_length && common_length > ELLIPSIS_LEN) + max -= common_length - ELLIPSIS_LEN; + else + common_length = sind = 0; + } /* How many items of MAX length can we fit in the screen window? */ max += 2; @@ -1278,7 +1355,7 @@ rl_display_match_list (matches, len, max) 0 < len <= limit implies count = 1. */ /* Sort the items if they are not already sorted. */ - if (rl_ignore_completion_duplicates == 0) + if (rl_ignore_completion_duplicates == 0 && rl_sort_completion_matches) qsort (matches + 1, len, sizeof (char *), (QSFUNC *)_rl_qsort_string_compare); rl_crlf (); @@ -1296,7 +1373,7 @@ rl_display_match_list (matches, len, max) else { temp = printable_part (matches[l]); - printed_len = print_filename (temp, matches[l]); + printed_len = print_filename (temp, matches[l], sind); if (j + 1 < limit) for (k = 0; k < max - printed_len; k++) @@ -1320,7 +1397,7 @@ rl_display_match_list (matches, len, max) for (i = 1; matches[i]; i++) { temp = printable_part (matches[i]); - printed_len = print_filename (temp, matches[i]); + printed_len = print_filename (temp, matches[i], sind); /* Have we reached the end of this line? */ if (matches[i+1]) { @@ -1370,7 +1447,7 @@ display_matches (matches) { temp = printable_part (matches[0]); rl_crlf (); - print_filename (temp, matches[0]); + print_filename (temp, matches[0], 0); rl_crlf (); rl_forced_update_display (); @@ -1406,7 +1483,7 @@ display_matches (matches) rl_crlf (); fprintf (rl_outstream, "Display all %d possibilities? (y or n)", len); fflush (rl_outstream); - if (get_y_or_n (0) == 0) + if ((completion_y_or_n = get_y_or_n (0)) == 0) { rl_crlf (); @@ -1678,6 +1755,7 @@ rl_complete_internal (what_to_do) FREE (saved_line_buffer); completion_changed_buffer = 0; RL_UNSETSTATE(RL_STATE_COMPLETING); + _rl_reset_completion_state (); return (0); } @@ -1692,6 +1770,7 @@ rl_complete_internal (what_to_do) FREE (saved_line_buffer); completion_changed_buffer = 0; RL_UNSETSTATE(RL_STATE_COMPLETING); + _rl_reset_completion_state (); return (0); } @@ -1742,10 +1821,11 @@ rl_complete_internal (what_to_do) break; default: - fprintf (stderr, "\r\nreadline: bad value %d for what_to_do in rl_complete\n", what_to_do); + _rl_ttymsg ("bad value %d for what_to_do in rl_complete", what_to_do); rl_ding (); FREE (saved_line_buffer); RL_UNSETSTATE(RL_STATE_COMPLETING); + _rl_reset_completion_state (); return 1; } @@ -1759,6 +1839,7 @@ rl_complete_internal (what_to_do) } RL_UNSETSTATE(RL_STATE_COMPLETING); + _rl_reset_completion_state (); return 0; } @@ -1802,6 +1883,7 @@ rl_completion_matches (text, entry_function) match_list = (char **)xmalloc ((match_list_size + 1) * sizeof (char *)); match_list[1] = (char *)NULL; + _rl_interrupt_immediately++; while (string = (*entry_function) (text, matches)) { if (matches + 1 == match_list_size) @@ -1811,6 +1893,7 @@ rl_completion_matches (text, entry_function) match_list[++matches] = string; match_list[matches + 1] = (char *)NULL; } + _rl_interrupt_immediately--; /* If there were any matches, then look through them finding out the lowest common denominator. That then becomes match_list[0]. */ @@ -2109,8 +2192,8 @@ rl_filename_completion_function (text, state) hit the end of the match list, we restore the original unmatched text, ring the bell, and reset the counter to zero. */ int -rl_menu_complete (count, ignore) - int count, ignore; +rl_old_menu_complete (count, invoking_key) + int count, invoking_key; { rl_compentry_func_t *our_func; int matching_filenames, found_quote; @@ -2135,10 +2218,14 @@ rl_menu_complete (count, ignore) match_list_index = match_list_size = 0; matches = (char **)NULL; + rl_completion_invoking_key = invoking_key; + /* Only the completion entry function can change these. */ set_completion_defaults ('%'); - our_func = rl_completion_entry_function + our_func = rl_menu_completion_entry_function; + if (our_func == 0) + our_func = rl_completion_entry_function ? rl_completion_entry_function : rl_filename_completion_function; @@ -2179,6 +2266,9 @@ rl_menu_complete (count, ignore) ; /* matches[0] is lcd if match_list_size > 1, but the circular buffer code below should take care of it. */ + + if (match_list_size > 1 && _rl_complete_show_all) + display_matches (matches); } /* Now we have the list of matches. Replace the text between @@ -2215,3 +2305,158 @@ rl_menu_complete (count, ignore) completion_changed_buffer = 1; return (0); } + +int +rl_menu_complete (count, ignore) + int count, ignore; +{ + rl_compentry_func_t *our_func; + int matching_filenames, found_quote; + + static char *orig_text; + static char **matches = (char **)0; + static int match_list_index = 0; + static int match_list_size = 0; + static int nontrivial_lcd = 0; + static int full_completion = 0; /* set to 1 if menu completion should reinitialize on next call */ + static int orig_start, orig_end; + static char quote_char; + static int delimiter; + + /* The first time through, we generate the list of matches and set things + up to insert them. */ + if (rl_last_func != rl_menu_complete || full_completion) + { + /* Clean up from previous call, if any. */ + FREE (orig_text); + if (matches) + _rl_free_match_list (matches); + + match_list_index = match_list_size = 0; + matches = (char **)NULL; + + full_completion = 0; + + /* Only the completion entry function can change these. */ + set_completion_defaults ('%'); + + our_func = rl_menu_completion_entry_function; + if (our_func == 0) + our_func = rl_completion_entry_function + ? rl_completion_entry_function + : rl_filename_completion_function; + + /* We now look backwards for the start of a filename/variable word. */ + orig_end = rl_point; + found_quote = delimiter = 0; + quote_char = '\0'; + + if (rl_point) + /* This (possibly) changes rl_point. If it returns a non-zero char, + we know we have an open quote. */ + quote_char = _rl_find_completion_word (&found_quote, &delimiter); + + orig_start = rl_point; + rl_point = orig_end; + + orig_text = rl_copy_text (orig_start, orig_end); + matches = gen_completion_matches (orig_text, orig_start, orig_end, + our_func, found_quote, quote_char); + + nontrivial_lcd = matches && strcmp (orig_text, matches[0]) != 0; + + /* If we are matching filenames, the attempted completion function will + have set rl_filename_completion_desired to a non-zero value. The basic + rl_filename_completion_function does this. */ + matching_filenames = rl_filename_completion_desired; + + if (matches == 0 || postprocess_matches (&matches, matching_filenames) == 0) + { + rl_ding (); + FREE (matches); + matches = (char **)0; + FREE (orig_text); + orig_text = (char *)0; + completion_changed_buffer = 0; + return (0); + } + + for (match_list_size = 0; matches[match_list_size]; match_list_size++) + ; + + if (match_list_size == 0) + { + rl_ding (); + FREE (matches); + matches = (char **)0; + match_list_index = 0; + completion_changed_buffer = 0; + return (0); + } + + /* matches[0] is lcd if match_list_size > 1, but the circular buffer + code below should take care of it. */ + if (*matches[0]) + { + insert_match (matches[0], orig_start, matches[1] ? MULT_MATCH : SINGLE_MATCH, "e_char); + orig_end = orig_start + strlen (matches[0]); + completion_changed_buffer = STREQ (orig_text, matches[0]) == 0; + } + + if (match_list_size > 1 && _rl_complete_show_all) + { + display_matches (matches); + /* If there are so many matches that the user has to be asked + whether or not he wants to see the matches, menu completion + is unwieldy. */ + if (rl_completion_query_items > 0 && match_list_size >= rl_completion_query_items) + { + rl_ding (); + FREE (matches); + matches = (char **)0; + full_completion = 1; + return (0); + } + } + else if (match_list_size <= 1) + { + append_to_match (matches[0], delimiter, quote_char, nontrivial_lcd); + full_completion = 1; + return (0); + } + } + + /* Now we have the list of matches. Replace the text between + rl_line_buffer[orig_start] and rl_line_buffer[rl_point] with + matches[match_list_index], and add any necessary closing char. */ + + if (matches == 0 || match_list_size == 0) + { + rl_ding (); + FREE (matches); + matches = (char **)0; + completion_changed_buffer = 0; + return (0); + } + + match_list_index += count; + if (match_list_index < 0) + match_list_index += match_list_size; + else + match_list_index %= match_list_size; + + if (match_list_index == 0 && match_list_size > 1) + { + rl_ding (); + insert_match (matches[0], orig_start, MULT_MATCH, "e_char); + } + else + { + insert_match (matches[match_list_index], orig_start, SINGLE_MATCH, "e_char); + append_to_match (matches[match_list_index], delimiter, quote_char, + strcmp (orig_text, matches[match_list_index])); + } + + completion_changed_buffer = 1; + return (0); +} |