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726f6388 JA |
1 | /* bashline.c -- Bash's interface to the readline library. */ |
2 | ||
3 | /* Copyright (C) 1987,1991 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
7 | Bash is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published by | |
bb70624e | 9 | the Free Software Foundation; either version 2, or (at your option) |
726f6388 JA |
10 | any later version. |
11 | ||
12 | Bash is distributed in the hope that it will be useful, but WITHOUT | |
13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 | License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with Bash; see the file COPYING. If not, write to the Free | |
bb70624e | 19 | Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
726f6388 | 20 | |
ccc6cda3 JA |
21 | #include "config.h" |
22 | ||
23 | #if defined (READLINE) | |
24 | ||
726f6388 JA |
25 | #include "bashtypes.h" |
26 | #include "posixstat.h" | |
27 | ||
ccc6cda3 JA |
28 | #if defined (HAVE_UNISTD_H) |
29 | # include <unistd.h> | |
30 | #endif | |
31 | ||
726f6388 JA |
32 | #include <stdio.h> |
33 | #include "bashansi.h" | |
726f6388 JA |
34 | #include "shell.h" |
35 | #include "builtins.h" | |
726f6388 | 36 | #include "bashhist.h" |
ccc6cda3 | 37 | #include "bashline.h" |
726f6388 | 38 | #include "execute_cmd.h" |
cce855bc | 39 | #include "findcmd.h" |
ccc6cda3 JA |
40 | #include "pathexp.h" |
41 | #include "builtins/common.h" | |
42 | #include <readline/rlconf.h> | |
43 | #include <readline/readline.h> | |
44 | #include <readline/history.h> | |
45 | ||
46 | #include <glob/glob.h> | |
726f6388 JA |
47 | |
48 | #if defined (ALIAS) | |
49 | # include "alias.h" | |
50 | #endif | |
51 | ||
bb70624e JA |
52 | #if defined (PROGRAMMABLE_COMPLETION) |
53 | # include "pcomplete.h" | |
54 | #endif | |
55 | ||
726f6388 | 56 | #if defined (BRACE_COMPLETION) |
28ef6c31 | 57 | extern int bash_brace_completion __P((int, int)); |
726f6388 JA |
58 | #endif /* BRACE_COMPLETION */ |
59 | ||
28ef6c31 JA |
60 | /* Forward declarations */ |
61 | ||
62 | extern char *command_word_completion_function __P((const char *, int)); | |
63 | ||
726f6388 | 64 | /* Functions bound to keys in Readline for Bash users. */ |
28ef6c31 JA |
65 | static int shell_expand_line __P((int, int)); |
66 | static int display_shell_version __P((int, int)); | |
67 | static int operate_and_get_next __P((int, int)); | |
68 | ||
69 | static int bash_ignore_filenames __P((char **)); | |
70 | static int bash_ignore_everything __P((char **)); | |
71 | ||
72 | static void cleanup_expansion_error __P((void)); | |
73 | static void set_up_new_line __P((char *)); | |
cce855bc JA |
74 | |
75 | #if defined (BANG_HISTORY) | |
28ef6c31 JA |
76 | static int history_expand_line __P((int, int)); |
77 | static int tcsh_magic_space __P((int, int)); | |
cce855bc | 78 | #endif /* BANG_HISTORY */ |
d166f048 | 79 | #ifdef ALIAS |
28ef6c31 | 80 | static int alias_expand_line __P((int, int)); |
cce855bc JA |
81 | #endif |
82 | #if defined (BANG_HISTORY) && defined (ALIAS) | |
28ef6c31 | 83 | static int history_and_alias_expand_line __P((int, int)); |
d166f048 | 84 | #endif |
726f6388 JA |
85 | |
86 | /* Helper functions for Readline. */ | |
87 | static int bash_directory_completion_hook (); | |
28ef6c31 JA |
88 | static int filename_completion_ignore (); |
89 | static int bash_push_line __P((void)); | |
726f6388 | 90 | |
28ef6c31 JA |
91 | static char **attempt_shell_completion __P((const char *, int, int)); |
92 | static char *variable_completion_function __P((const char *, int)); | |
93 | static char *hostname_completion_function __P((const char *, int)); | |
94 | static char *command_subst_completion_function __P((const char *, int)); | |
ccc6cda3 | 95 | |
28ef6c31 | 96 | static int dynamic_complete_history __P((int, int)); |
726f6388 | 97 | |
28ef6c31 JA |
98 | static char *glob_complete_word __P((const char *, int)); |
99 | static int bash_glob_expand_word __P((int, int)); | |
100 | static int bash_glob_list_expansions __P((int, int)); | |
726f6388 | 101 | |
28ef6c31 JA |
102 | static void snarf_hosts_from_file __P((char *)); |
103 | static void add_host_name __P((char *)); | |
104 | ||
105 | static char *bash_dequote_filename __P((char *, int)); | |
106 | static char *bash_quote_filename __P((char *, int, char *)); | |
ccc6cda3 JA |
107 | |
108 | #if defined (ALIAS) | |
28ef6c31 | 109 | static int posix_edit_macros __P((int, int)); |
ccc6cda3 | 110 | #endif |
726f6388 | 111 | |
bb70624e JA |
112 | #if defined (PROGRAMMABLE_COMPLETION) |
113 | static char **prog_complete_matches; | |
114 | static int old_rl_completion_append_character; | |
115 | #endif | |
116 | ||
726f6388 JA |
117 | /* Variables used here but defined in other files. */ |
118 | extern int posixly_correct, no_symbolic_links; | |
726f6388 JA |
119 | extern char *current_prompt_string, *ps1_prompt; |
120 | extern STRING_INT_ALIST word_token_alist[]; | |
726f6388 JA |
121 | |
122 | /* SPECIFIC_COMPLETION_FUNCTIONS specifies that we have individual | |
123 | completion functions which indicate what type of completion should be | |
124 | done (at or before point) that can be bound to key sequences with | |
125 | the readline library. */ | |
126 | #define SPECIFIC_COMPLETION_FUNCTIONS | |
127 | ||
128 | #if defined (SPECIFIC_COMPLETION_FUNCTIONS) | |
28ef6c31 JA |
129 | static int bash_specific_completion __P((int, rl_compentry_func_t *)); |
130 | ||
131 | static int bash_complete_filename_internal __P((int)); | |
132 | static int bash_complete_username_internal __P((int)); | |
133 | static int bash_complete_hostname_internal __P((int)); | |
134 | static int bash_complete_variable_internal __P((int)); | |
135 | static int bash_complete_command_internal __P((int)); | |
136 | ||
137 | static int bash_complete_filename __P((int, int)); | |
138 | static int bash_possible_filename_completions __P((int, int)); | |
139 | static int bash_complete_username __P((int, int)); | |
140 | static int bash_possible_username_completions __P((int, int)); | |
141 | static int bash_complete_hostname __P((int, int)); | |
142 | static int bash_possible_hostname_completions __P((int, int)); | |
143 | static int bash_complete_variable __P((int, int)); | |
144 | static int bash_possible_variable_completions __P((int, int)); | |
145 | static int bash_complete_command __P((int, int)); | |
146 | static int bash_possible_command_completions __P((int, int)); | |
726f6388 JA |
147 | #endif /* SPECIFIC_COMPLETION_FUNCTIONS */ |
148 | ||
726f6388 | 149 | #if defined (VI_MODE) |
28ef6c31 | 150 | static int vi_edit_and_execute_command __P((int, int)); |
726f6388 JA |
151 | #endif |
152 | ||
ccc6cda3 JA |
153 | /* Non-zero once initalize_readline () has been called. */ |
154 | int bash_readline_initialized = 0; | |
155 | ||
156 | /* If non-zero, we do hostname completion, breaking words at `@' and | |
157 | trying to complete the stuff after the `@' from our own internal | |
158 | host list. */ | |
159 | int perform_hostname_completion = 1; | |
160 | ||
bb70624e JA |
161 | /* If non-zero, we don't do command completion on an empty line. */ |
162 | int no_empty_command_completion; | |
163 | ||
ccc6cda3 JA |
164 | static char *bash_completer_word_break_characters = " \t\n\"'@><=;|&(:"; |
165 | static char *bash_nohostname_word_break_characters = " \t\n\"'><=;|&(:"; | |
166 | ||
28ef6c31 | 167 | static rl_hook_func_t *old_rl_startup_hook = (rl_hook_func_t *)NULL; |
726f6388 | 168 | |
ccc6cda3 JA |
169 | /* What kind of quoting is performed by bash_quote_filename: |
170 | COMPLETE_DQUOTE = double-quoting the filename | |
171 | COMPLETE_SQUOTE = single_quoting the filename | |
172 | COMPLETE_BSQUOTE = backslash-quoting special chars in the filename | |
173 | */ | |
174 | #define COMPLETE_DQUOTE 1 | |
175 | #define COMPLETE_SQUOTE 2 | |
176 | #define COMPLETE_BSQUOTE 3 | |
177 | static int completion_quoting_style = COMPLETE_BSQUOTE; | |
178 | ||
726f6388 JA |
179 | /* Change the readline VI-mode keymaps into or out of Posix.2 compliance. |
180 | Called when the shell is put into or out of `posix' mode. */ | |
181 | void | |
182 | posix_readline_initialize (on_or_off) | |
183 | int on_or_off; | |
184 | { | |
ccc6cda3 JA |
185 | if (on_or_off) |
186 | rl_variable_bind ("comment-begin", "#"); | |
726f6388 | 187 | #if defined (VI_MODE) |
ccc6cda3 JA |
188 | rl_bind_key_in_map (CTRL('I'), on_or_off ? rl_insert : rl_complete, vi_insertion_keymap); |
189 | #endif | |
190 | } | |
191 | ||
192 | void | |
193 | enable_hostname_completion (on_or_off) | |
194 | int on_or_off; | |
195 | { | |
726f6388 JA |
196 | if (on_or_off) |
197 | { | |
ccc6cda3 JA |
198 | perform_hostname_completion = 1; |
199 | rl_special_prefixes = "$@"; | |
200 | rl_completer_word_break_characters = bash_completer_word_break_characters; | |
726f6388 JA |
201 | } |
202 | else | |
ccc6cda3 JA |
203 | { |
204 | perform_hostname_completion = 0; | |
205 | rl_special_prefixes = "$"; | |
206 | rl_completer_word_break_characters = bash_nohostname_word_break_characters; | |
207 | } | |
208 | } | |
726f6388 JA |
209 | |
210 | /* Called once from parse.y if we are going to use readline. */ | |
211 | void | |
212 | initialize_readline () | |
213 | { | |
214 | if (bash_readline_initialized) | |
215 | return; | |
216 | ||
217 | rl_terminal_name = get_string_value ("TERM"); | |
218 | rl_instream = stdin; | |
219 | rl_outstream = stderr; | |
726f6388 JA |
220 | |
221 | /* Allow conditional parsing of the ~/.inputrc file. */ | |
222 | rl_readline_name = "Bash"; | |
223 | ||
28ef6c31 JA |
224 | /* Add bindable names before calling rl_initialize so they may be |
225 | referenced in the various inputrc files. */ | |
226 | rl_add_defun ("shell-expand-line", shell_expand_line, -1); | |
cce855bc | 227 | #ifdef BANG_HISTORY |
28ef6c31 JA |
228 | rl_add_defun ("history-expand-line", history_expand_line, -1); |
229 | rl_add_defun ("magic-space", tcsh_magic_space, -1); | |
cce855bc JA |
230 | #endif |
231 | ||
d166f048 | 232 | #ifdef ALIAS |
28ef6c31 | 233 | rl_add_defun ("alias-expand-line", alias_expand_line, -1); |
bc4cd23c | 234 | # ifdef BANG_HISTORY |
28ef6c31 | 235 | rl_add_defun ("history-and-alias-expand-line", history_and_alias_expand_line, -1); |
bc4cd23c | 236 | # endif |
d166f048 JA |
237 | #endif |
238 | ||
726f6388 JA |
239 | /* Backwards compatibility. */ |
240 | rl_add_defun ("insert-last-argument", rl_yank_last_arg, -1); | |
241 | ||
28ef6c31 JA |
242 | rl_add_defun ("operate-and-get-next", operate_and_get_next, -1); |
243 | rl_add_defun ("display-shell-version", display_shell_version, -1); | |
244 | ||
245 | #if defined (BRACE_COMPLETION) | |
246 | rl_add_defun ("complete-into-braces", bash_brace_completion, -1); | |
247 | #endif | |
248 | ||
249 | #if defined (SPECIFIC_COMPLETION_FUNCTIONS) | |
250 | rl_add_defun ("complete-filename", bash_complete_filename, -1); | |
251 | rl_add_defun ("possible-filename-completions", bash_possible_filename_completions, -1); | |
252 | rl_add_defun ("complete-username", bash_complete_username, -1); | |
253 | rl_add_defun ("possible-username-completions", bash_possible_username_completions, -1); | |
254 | rl_add_defun ("complete-hostname", bash_complete_hostname, -1); | |
255 | rl_add_defun ("possible-hostname-completions", bash_possible_hostname_completions, -1); | |
256 | rl_add_defun ("complete-variable", bash_complete_variable, -1); | |
257 | rl_add_defun ("possible-variable-completions", bash_possible_variable_completions, -1); | |
258 | rl_add_defun ("complete-command", bash_complete_command, -1); | |
259 | rl_add_defun ("possible-command-completions", bash_possible_command_completions, -1); | |
260 | rl_add_defun ("glob-expand-word", bash_glob_expand_word, -1); | |
261 | rl_add_defun ("glob-list-expansions", bash_glob_list_expansions, -1); | |
262 | #endif | |
263 | ||
264 | rl_add_defun ("dynamic-complete-history", dynamic_complete_history, -1); | |
726f6388 | 265 | |
28ef6c31 JA |
266 | /* Bind defaults before binding our custom shell keybindings. */ |
267 | if (RL_ISSTATE(RL_STATE_INITIALIZED) == 0) | |
268 | rl_initialize (); | |
269 | ||
270 | /* Bind up our special shell functions. */ | |
271 | rl_bind_key_in_map (CTRL('E'), shell_expand_line, emacs_meta_keymap); | |
272 | ||
273 | /* Bind up our special shell functions. */ | |
274 | #ifdef BANG_HISTORY | |
275 | rl_bind_key_in_map ('^', history_expand_line, emacs_meta_keymap); | |
276 | #endif | |
277 | ||
278 | rl_bind_key_in_map (CTRL ('O'), operate_and_get_next, emacs_standard_keymap); | |
279 | rl_bind_key_in_map (CTRL ('V'), display_shell_version, emacs_ctlx_keymap); | |
726f6388 JA |
280 | |
281 | /* In Bash, the user can switch editing modes with "set -o [vi emacs]", | |
282 | so it is not necessary to allow C-M-j for context switching. Turn | |
283 | off this occasionally confusing behaviour. */ | |
284 | rl_unbind_key_in_map (CTRL('J'), emacs_meta_keymap); | |
285 | rl_unbind_key_in_map (CTRL('M'), emacs_meta_keymap); | |
286 | #if defined (VI_MODE) | |
287 | rl_unbind_key_in_map (CTRL('E'), vi_movement_keymap); | |
288 | #endif | |
ccc6cda3 | 289 | |
726f6388 | 290 | #if defined (BRACE_COMPLETION) |
28ef6c31 | 291 | rl_bind_key_in_map ('{', bash_brace_completion, emacs_meta_keymap); |
726f6388 JA |
292 | #endif /* BRACE_COMPLETION */ |
293 | ||
294 | #if defined (SPECIFIC_COMPLETION_FUNCTIONS) | |
28ef6c31 JA |
295 | rl_bind_key_in_map ('/', bash_complete_filename, emacs_meta_keymap); |
296 | rl_bind_key_in_map ('/', bash_possible_filename_completions, emacs_ctlx_keymap); | |
297 | ||
298 | rl_bind_key_in_map ('~', bash_complete_username, emacs_meta_keymap); | |
299 | rl_bind_key_in_map ('~', bash_possible_username_completions, emacs_ctlx_keymap); | |
300 | ||
301 | rl_bind_key_in_map ('@', bash_complete_hostname, emacs_meta_keymap); | |
302 | rl_bind_key_in_map ('@', bash_possible_hostname_completions, emacs_ctlx_keymap); | |
303 | ||
304 | rl_bind_key_in_map ('$', bash_complete_variable, emacs_meta_keymap); | |
305 | rl_bind_key_in_map ('$', bash_possible_variable_completions, emacs_ctlx_keymap); | |
306 | ||
307 | rl_bind_key_in_map ('!', bash_complete_command, emacs_meta_keymap); | |
308 | rl_bind_key_in_map ('!', bash_possible_command_completions, emacs_ctlx_keymap); | |
309 | ||
310 | rl_bind_key_in_map ('*', bash_glob_expand_word, emacs_ctlx_keymap); | |
311 | rl_bind_key_in_map ('g', bash_glob_list_expansions, emacs_ctlx_keymap); | |
726f6388 JA |
312 | |
313 | #endif /* SPECIFIC_COMPLETION_FUNCTIONS */ | |
314 | ||
28ef6c31 | 315 | rl_bind_key_in_map (TAB, dynamic_complete_history, emacs_meta_keymap); |
726f6388 JA |
316 | |
317 | /* Tell the completer that we want a crack first. */ | |
28ef6c31 | 318 | rl_attempted_completion_function = attempt_shell_completion; |
726f6388 JA |
319 | |
320 | /* Tell the completer that we might want to follow symbolic links or | |
321 | do other expansion on directory names. */ | |
322 | rl_directory_completion_hook = bash_directory_completion_hook; | |
323 | ||
324 | /* Tell the filename completer we want a chance to ignore some names. */ | |
28ef6c31 | 325 | rl_ignore_some_completions_function = filename_completion_ignore; |
726f6388 JA |
326 | |
327 | #if defined (VI_MODE) | |
28ef6c31 | 328 | rl_bind_key_in_map ('v', vi_edit_and_execute_command, vi_movement_keymap); |
ccc6cda3 | 329 | # if defined (ALIAS) |
28ef6c31 | 330 | rl_bind_key_in_map ('@', posix_edit_macros, vi_movement_keymap); |
ccc6cda3 | 331 | # endif |
726f6388 JA |
332 | #endif |
333 | ||
334 | rl_completer_quote_characters = "'\""; | |
ccc6cda3 JA |
335 | |
336 | /* This sets rl_completer_word_break_characters and rl_special_prefixes | |
337 | to the appropriate values, depending on whether or not hostname | |
338 | completion is enabled. */ | |
339 | enable_hostname_completion (perform_hostname_completion); | |
340 | ||
341 | /* characters that need to be quoted when appearing in filenames. */ | |
28ef6c31 | 342 | rl_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:{"; /*}*/ |
ccc6cda3 JA |
343 | rl_filename_quoting_function = bash_quote_filename; |
344 | rl_filename_dequoting_function = bash_dequote_filename; | |
345 | rl_char_is_quoted_p = char_is_quoted; | |
726f6388 JA |
346 | |
347 | if (posixly_correct) | |
348 | posix_readline_initialize (1); | |
349 | ||
350 | bash_readline_initialized = 1; | |
351 | } | |
352 | ||
353 | /* On Sun systems at least, rl_attempted_completion_function can end up | |
354 | getting set to NULL, and rl_completion_entry_function set to do command | |
355 | word completion if Bash is interrupted while trying to complete a command | |
356 | word. This just resets all the completion functions to the right thing. | |
357 | It's called from throw_to_top_level(). */ | |
358 | void | |
359 | bashline_reinitialize () | |
360 | { | |
361 | tilde_initialize (); | |
362 | rl_attempted_completion_function = attempt_shell_completion; | |
28ef6c31 | 363 | rl_completion_entry_function = NULL; |
726f6388 | 364 | rl_directory_completion_hook = bash_directory_completion_hook; |
28ef6c31 | 365 | rl_ignore_some_completions_function = filename_completion_ignore; |
726f6388 JA |
366 | } |
367 | ||
368 | /* Contains the line to push into readline. */ | |
369 | static char *push_to_readline = (char *)NULL; | |
370 | ||
371 | /* Push the contents of push_to_readline into the | |
372 | readline buffer. */ | |
28ef6c31 | 373 | static int |
726f6388 JA |
374 | bash_push_line () |
375 | { | |
376 | if (push_to_readline) | |
377 | { | |
378 | rl_insert_text (push_to_readline); | |
379 | free (push_to_readline); | |
380 | push_to_readline = (char *)NULL; | |
381 | rl_startup_hook = old_rl_startup_hook; | |
382 | } | |
28ef6c31 | 383 | return 0; |
726f6388 JA |
384 | } |
385 | ||
386 | /* Call this to set the initial text for the next line to read | |
387 | from readline. */ | |
388 | int | |
389 | bash_re_edit (line) | |
390 | char *line; | |
391 | { | |
ccc6cda3 | 392 | FREE (push_to_readline); |
726f6388 JA |
393 | |
394 | push_to_readline = savestring (line); | |
395 | old_rl_startup_hook = rl_startup_hook; | |
28ef6c31 | 396 | rl_startup_hook = bash_push_line; |
726f6388 JA |
397 | |
398 | return (0); | |
399 | } | |
400 | ||
28ef6c31 | 401 | static int |
726f6388 JA |
402 | display_shell_version (count, c) |
403 | int count, c; | |
404 | { | |
28ef6c31 | 405 | rl_crlf (); |
ccc6cda3 | 406 | show_shell_version (0); |
726f6388 JA |
407 | putc ('\r', rl_outstream); |
408 | fflush (rl_outstream); | |
409 | rl_on_new_line (); | |
410 | rl_redisplay (); | |
28ef6c31 | 411 | return 0; |
726f6388 JA |
412 | } |
413 | ||
414 | /* **************************************************************** */ | |
415 | /* */ | |
416 | /* Readline Stuff */ | |
417 | /* */ | |
418 | /* **************************************************************** */ | |
419 | ||
420 | /* If the user requests hostname completion, then simply build a list | |
bb70624e JA |
421 | of hosts, and complete from that forever more, or at least until |
422 | HOSTFILE is unset. */ | |
726f6388 | 423 | |
bb70624e | 424 | /* THIS SHOULD BE A STRINGLIST. */ |
726f6388 JA |
425 | /* The kept list of hostnames. */ |
426 | static char **hostname_list = (char **)NULL; | |
427 | ||
428 | /* The physical size of the above list. */ | |
ccc6cda3 | 429 | static int hostname_list_size; |
726f6388 | 430 | |
ccc6cda3 JA |
431 | /* The number of hostnames in the above list. */ |
432 | static int hostname_list_length; | |
726f6388 JA |
433 | |
434 | /* Whether or not HOSTNAME_LIST has been initialized. */ | |
435 | int hostname_list_initialized = 0; | |
436 | ||
726f6388 JA |
437 | /* Initialize the hostname completion table. */ |
438 | static void | |
439 | initialize_hostname_list () | |
440 | { | |
441 | char *temp; | |
442 | ||
443 | temp = get_string_value ("HOSTFILE"); | |
ccc6cda3 | 444 | if (temp == 0) |
726f6388 | 445 | temp = get_string_value ("hostname_completion_file"); |
ccc6cda3 JA |
446 | if (temp == 0) |
447 | temp = DEFAULT_HOSTS_FILE; | |
726f6388 JA |
448 | |
449 | snarf_hosts_from_file (temp); | |
726f6388 JA |
450 | |
451 | if (hostname_list) | |
452 | hostname_list_initialized++; | |
453 | } | |
454 | ||
455 | /* Add NAME to the list of hosts. */ | |
456 | static void | |
457 | add_host_name (name) | |
458 | char *name; | |
459 | { | |
ccc6cda3 JA |
460 | long size; |
461 | ||
726f6388 JA |
462 | if (hostname_list_length + 2 > hostname_list_size) |
463 | { | |
ccc6cda3 JA |
464 | hostname_list_size = (hostname_list_size + 32) - (hostname_list_size % 32); |
465 | size = hostname_list_size * sizeof (char *); | |
466 | hostname_list = (char **)xrealloc (hostname_list, size); | |
726f6388 JA |
467 | } |
468 | ||
ccc6cda3 JA |
469 | hostname_list[hostname_list_length++] = savestring (name); |
470 | hostname_list[hostname_list_length] = (char *)NULL; | |
726f6388 JA |
471 | } |
472 | ||
473 | #define cr_whitespace(c) ((c) == '\r' || (c) == '\n' || whitespace(c)) | |
474 | ||
475 | static void | |
476 | snarf_hosts_from_file (filename) | |
477 | char *filename; | |
478 | { | |
ccc6cda3 | 479 | FILE *file; |
726f6388 JA |
480 | char *temp, buffer[256], name[256]; |
481 | register int i, start; | |
482 | ||
ccc6cda3 JA |
483 | file = fopen (filename, "r"); |
484 | if (file == 0) | |
726f6388 JA |
485 | return; |
486 | ||
487 | while (temp = fgets (buffer, 255, file)) | |
488 | { | |
489 | /* Skip to first character. */ | |
ccc6cda3 JA |
490 | for (i = 0; buffer[i] && cr_whitespace (buffer[i]); i++) |
491 | ; | |
726f6388 | 492 | |
ccc6cda3 JA |
493 | /* If comment or blank line, ignore. */ |
494 | if (buffer[i] == '\0' || buffer[i] == '#') | |
726f6388 JA |
495 | continue; |
496 | ||
497 | /* If `preprocessor' directive, do the include. */ | |
ccc6cda3 | 498 | if (strncmp (buffer + i, "$include ", 9) == 0) |
726f6388 | 499 | { |
ccc6cda3 | 500 | char *incfile, *t; |
726f6388 JA |
501 | |
502 | /* Find start of filename. */ | |
ccc6cda3 JA |
503 | for (incfile = buffer + i + 9; *incfile && whitespace (*incfile); incfile++) |
504 | ; | |
726f6388 JA |
505 | |
506 | /* Find end of filename. */ | |
ccc6cda3 JA |
507 | for (t = incfile; *t && cr_whitespace (*t) == 0; t++) |
508 | ; | |
726f6388 JA |
509 | |
510 | *t = '\0'; | |
511 | ||
ccc6cda3 | 512 | snarf_hosts_from_file (incfile); |
726f6388 JA |
513 | continue; |
514 | } | |
515 | ||
ccc6cda3 JA |
516 | /* Skip internet address if present. */ |
517 | if (digit (buffer[i])) | |
518 | for (; buffer[i] && cr_whitespace (buffer[i]) == 0; i++); | |
726f6388 JA |
519 | |
520 | /* Gobble up names. Each name is separated with whitespace. */ | |
ccc6cda3 | 521 | while (buffer[i]) |
726f6388 | 522 | { |
ccc6cda3 JA |
523 | for (; cr_whitespace (buffer[i]); i++) |
524 | ; | |
525 | if (buffer[i] == '\0' || buffer[i] == '#') | |
526 | break; | |
527 | ||
528 | /* Isolate the current word. */ | |
529 | for (start = i; buffer[i] && cr_whitespace (buffer[i]) == 0; i++) | |
530 | ; | |
531 | if (i == start) | |
726f6388 JA |
532 | continue; |
533 | strncpy (name, buffer + start, i - start); | |
534 | name[i - start] = '\0'; | |
535 | add_host_name (name); | |
536 | } | |
537 | } | |
538 | fclose (file); | |
539 | } | |
540 | ||
bb70624e JA |
541 | /* Return the hostname list. */ |
542 | char ** | |
543 | get_hostname_list () | |
544 | { | |
545 | if (hostname_list_initialized == 0) | |
546 | initialize_hostname_list (); | |
547 | return (hostname_list); | |
548 | } | |
549 | ||
550 | void | |
551 | clear_hostname_list () | |
552 | { | |
553 | register int i; | |
554 | ||
555 | if (hostname_list_initialized == 0) | |
556 | return; | |
557 | for (i = 0; i < hostname_list_length; i++) | |
558 | free (hostname_list[i]); | |
559 | hostname_list_length = 0; | |
560 | } | |
561 | ||
726f6388 JA |
562 | /* Return a NULL terminated list of hostnames which begin with TEXT. |
563 | Initialize the hostname list the first time if neccessary. | |
564 | The array is malloc ()'ed, but not the individual strings. */ | |
565 | static char ** | |
566 | hostnames_matching (text) | |
567 | char *text; | |
568 | { | |
ccc6cda3 JA |
569 | register int i, len, nmatch, rsize; |
570 | char **result; | |
726f6388 | 571 | |
ccc6cda3 JA |
572 | if (hostname_list_initialized == 0) |
573 | initialize_hostname_list (); | |
726f6388 | 574 | |
ccc6cda3 JA |
575 | if (hostname_list_initialized == 0) |
576 | return ((char **)NULL); | |
726f6388 JA |
577 | |
578 | /* Special case. If TEXT consists of nothing, then the whole list is | |
579 | what is desired. */ | |
ccc6cda3 | 580 | if (*text == '\0') |
726f6388 | 581 | { |
bb70624e | 582 | result = alloc_array (1 + hostname_list_length); |
726f6388 JA |
583 | for (i = 0; i < hostname_list_length; i++) |
584 | result[i] = hostname_list[i]; | |
585 | result[i] = (char *)NULL; | |
586 | return (result); | |
587 | } | |
588 | ||
589 | /* Scan until found, or failure. */ | |
ccc6cda3 JA |
590 | len = strlen (text); |
591 | result = (char **)NULL; | |
592 | for (i = nmatch = rsize = 0; i < hostname_list_length; i++) | |
726f6388 | 593 | { |
ccc6cda3 | 594 | if (STREQN (text, hostname_list[i], len) == 0) |
28ef6c31 | 595 | continue; |
726f6388 | 596 | |
ccc6cda3 | 597 | /* OK, it matches. Add it to the list. */ |
bc4cd23c | 598 | if (nmatch >= (rsize - 1)) |
726f6388 | 599 | { |
ccc6cda3 JA |
600 | rsize = (rsize + 16) - (rsize % 16); |
601 | result = (char **)xrealloc (result, rsize * sizeof (char *)); | |
726f6388 JA |
602 | } |
603 | ||
ccc6cda3 | 604 | result[nmatch++] = hostname_list[i]; |
726f6388 | 605 | } |
ccc6cda3 JA |
606 | if (nmatch) |
607 | result[nmatch] = (char *)NULL; | |
608 | return (result); | |
726f6388 JA |
609 | } |
610 | ||
ccc6cda3 | 611 | /* The equivalent of the Korn shell C-o operate-and-get-next-history-line |
726f6388 | 612 | editing command. */ |
ccc6cda3 | 613 | static int saved_history_line_to_use = -1; |
726f6388 | 614 | |
28ef6c31 | 615 | static int |
726f6388 JA |
616 | set_saved_history () |
617 | { | |
ccc6cda3 | 618 | if (saved_history_line_to_use >= 0) |
b72432fd | 619 | rl_get_previous_history (history_length - saved_history_line_to_use, 0); |
ccc6cda3 | 620 | saved_history_line_to_use = -1; |
726f6388 | 621 | rl_startup_hook = old_rl_startup_hook; |
ccc6cda3 | 622 | } |
726f6388 | 623 | |
28ef6c31 | 624 | static int |
726f6388 JA |
625 | operate_and_get_next (count, c) |
626 | int count, c; | |
627 | { | |
628 | int where; | |
629 | ||
630 | /* Accept the current line. */ | |
b72432fd | 631 | rl_newline (1, c); |
726f6388 JA |
632 | |
633 | /* Find the current line, and find the next line to use. */ | |
634 | where = where_history (); | |
635 | ||
28ef6c31 | 636 | if ((history_is_stifled () && (history_length >= history_max_entries)) || |
726f6388 JA |
637 | (where >= history_length - 1)) |
638 | saved_history_line_to_use = where; | |
639 | else | |
640 | saved_history_line_to_use = where + 1; | |
641 | ||
642 | old_rl_startup_hook = rl_startup_hook; | |
28ef6c31 JA |
643 | rl_startup_hook = set_saved_history; |
644 | ||
645 | return 0; | |
726f6388 JA |
646 | } |
647 | ||
648 | #if defined (VI_MODE) | |
649 | /* This vi mode command causes VI_EDIT_COMMAND to be run on the current | |
650 | command being entered (if no explicit argument is given), otherwise on | |
651 | a command from the history file. */ | |
652 | ||
653 | #define VI_EDIT_COMMAND "fc -e ${VISUAL:-${EDITOR:-vi}}" | |
654 | ||
28ef6c31 | 655 | static int |
726f6388 | 656 | vi_edit_and_execute_command (count, c) |
ccc6cda3 | 657 | int count, c; |
726f6388 JA |
658 | { |
659 | char *command; | |
28ef6c31 | 660 | int r; |
726f6388 JA |
661 | |
662 | /* Accept the current line. */ | |
b72432fd | 663 | rl_newline (1, c); |
726f6388 JA |
664 | |
665 | if (rl_explicit_arg) | |
666 | { | |
667 | command = xmalloc (strlen (VI_EDIT_COMMAND) + 8); | |
668 | sprintf (command, "%s %d", VI_EDIT_COMMAND, count); | |
669 | } | |
670 | else | |
671 | { | |
672 | /* Take the command we were just editing, add it to the history file, | |
673 | then call fc to operate on it. We have to add a dummy command to | |
674 | the end of the history because fc ignores the last command (assumes | |
675 | it's supposed to deal with the command before the `fc'). */ | |
676 | using_history (); | |
d166f048 JA |
677 | bash_add_history (rl_line_buffer); |
678 | bash_add_history (""); | |
726f6388 JA |
679 | history_lines_this_session++; |
680 | using_history (); | |
681 | command = savestring (VI_EDIT_COMMAND); | |
682 | } | |
28ef6c31 | 683 | r = parse_and_execute (command, "v", SEVAL_NOHIST); |
ccc6cda3 | 684 | rl_line_buffer[0] = '\0'; /* XXX */ |
28ef6c31 JA |
685 | |
686 | return r; | |
726f6388 JA |
687 | } |
688 | #endif /* VI_MODE */ | |
689 | ||
ccc6cda3 JA |
690 | #if defined (ALIAS) |
691 | static int | |
692 | posix_edit_macros (count, key) | |
693 | int count, key; | |
694 | { | |
695 | int c; | |
696 | char alias_name[3], *alias_value, *macro; | |
697 | ||
698 | c = rl_read_key (); | |
699 | alias_name[0] = '_'; | |
700 | alias_name[1] = c; | |
701 | alias_name[2] = '\0'; | |
702 | ||
703 | alias_value = get_alias_value (alias_name); | |
704 | if (alias_value && *alias_value) | |
705 | { | |
706 | macro = savestring (alias_value); | |
707 | rl_push_macro_input (macro); | |
708 | } | |
709 | return 0; | |
710 | } | |
711 | #endif | |
712 | ||
726f6388 JA |
713 | /* **************************************************************** */ |
714 | /* */ | |
715 | /* How To Do Shell Completion */ | |
716 | /* */ | |
717 | /* **************************************************************** */ | |
718 | ||
bb70624e JA |
719 | #define COMMAND_SEPARATORS ";|&{(`" |
720 | ||
721 | static int | |
722 | check_redir (ti) | |
723 | int ti; | |
724 | { | |
725 | register int this_char, prev_char; | |
726 | ||
727 | /* Handle the two character tokens `>&', `<&', and `>|'. | |
728 | We are not in a command position after one of these. */ | |
729 | this_char = rl_line_buffer[ti]; | |
730 | prev_char = rl_line_buffer[ti - 1]; | |
731 | ||
732 | if ((this_char == '&' && (prev_char == '<' || prev_char == '>')) || | |
733 | (this_char == '|' && prev_char == '>')) | |
734 | return (1); | |
735 | else if ((this_char == '{' && prev_char == '$') || /* } */ | |
736 | (char_is_quoted (rl_line_buffer, ti))) | |
737 | return (1); | |
738 | return (0); | |
739 | } | |
740 | ||
741 | #if defined (PROGRAMMABLE_COMPLETION) | |
742 | static int | |
743 | find_cmd_start (start) | |
744 | int start; | |
745 | { | |
746 | register int s, os; | |
747 | ||
748 | os = 0; | |
749 | while (((s = skip_to_delim (rl_line_buffer, os, COMMAND_SEPARATORS)) <= start) && | |
750 | rl_line_buffer[s]) | |
751 | os = s+1; | |
752 | return os; | |
753 | } | |
754 | ||
755 | static int | |
756 | find_cmd_end (end) | |
757 | int end; | |
758 | { | |
759 | register int e; | |
760 | ||
761 | e = skip_to_delim (rl_line_buffer, end, COMMAND_SEPARATORS); | |
762 | return e; | |
763 | } | |
764 | ||
765 | static char * | |
766 | find_cmd_name (start) | |
767 | int start; | |
768 | { | |
769 | char *name; | |
770 | register int s, e; | |
771 | ||
772 | for (s = start; whitespace (rl_line_buffer[s]); s++) | |
773 | ; | |
774 | ||
775 | /* skip until a shell break character */ | |
776 | e = skip_to_delim (rl_line_buffer, s, "()<>;&| \t\n"); | |
777 | ||
778 | name = substring (rl_line_buffer, s, e); | |
779 | ||
780 | return (name); | |
781 | } | |
782 | ||
783 | static char * | |
784 | prog_complete_return (text, matchnum) | |
785 | char *text; | |
786 | int matchnum; | |
787 | { | |
788 | static int ind; | |
789 | ||
790 | if (matchnum == 0) | |
791 | ind = 0; | |
792 | ||
793 | if (prog_complete_matches == 0 || prog_complete_matches[ind] == 0) | |
794 | return (char *)NULL; | |
795 | return (prog_complete_matches[ind++]); | |
796 | } | |
797 | ||
798 | #endif /* PROGRAMMABLE_COMPLETION */ | |
799 | ||
726f6388 JA |
800 | /* Do some completion on TEXT. The indices of TEXT in RL_LINE_BUFFER are |
801 | at START and END. Return an array of matches, or NULL if none. */ | |
802 | static char ** | |
803 | attempt_shell_completion (text, start, end) | |
28ef6c31 | 804 | const char *text; |
726f6388 JA |
805 | int start, end; |
806 | { | |
bb70624e | 807 | int in_command_position, ti, saveti, qc; |
ccc6cda3 | 808 | char **matches, *command_separator_chars; |
726f6388 | 809 | |
bb70624e | 810 | command_separator_chars = COMMAND_SEPARATORS; |
ccc6cda3 | 811 | matches = (char **)NULL; |
28ef6c31 | 812 | rl_ignore_some_completions_function = filename_completion_ignore; |
726f6388 JA |
813 | |
814 | /* Determine if this could be a command word. It is if it appears at | |
815 | the start of the line (ignoring preceding whitespace), or if it | |
816 | appears after a character that separates commands. It cannot be a | |
817 | command word if we aren't at the top-level prompt. */ | |
818 | ti = start - 1; | |
bb70624e | 819 | saveti = qc = -1; |
726f6388 JA |
820 | |
821 | while ((ti > -1) && (whitespace (rl_line_buffer[ti]))) | |
822 | ti--; | |
823 | ||
bb70624e JA |
824 | #if 1 |
825 | /* If this is an open quote, maybe we're trying to complete a quoted | |
826 | command name. */ | |
827 | if (rl_line_buffer[ti] == '"' || rl_line_buffer[ti] == '\'') | |
828 | { | |
829 | qc = rl_line_buffer[ti]; | |
830 | saveti = ti--; | |
831 | while (ti > -1 && (whitespace (rl_line_buffer[ti]))) | |
28ef6c31 | 832 | ti--; |
bb70624e JA |
833 | } |
834 | #endif | |
835 | ||
726f6388 JA |
836 | in_command_position = 0; |
837 | if (ti < 0) | |
838 | { | |
839 | /* Only do command completion at the start of a line when we | |
28ef6c31 | 840 | are prompting at the top level. */ |
726f6388 JA |
841 | if (current_prompt_string == ps1_prompt) |
842 | in_command_position++; | |
843 | } | |
844 | else if (member (rl_line_buffer[ti], command_separator_chars)) | |
845 | { | |
726f6388 JA |
846 | in_command_position++; |
847 | ||
bb70624e | 848 | if (check_redir (ti) == 1) |
28ef6c31 | 849 | in_command_position = 0; |
726f6388 JA |
850 | } |
851 | else | |
852 | { | |
853 | /* This still could be in command position. It is possible | |
854 | that all of the previous words on the line are variable | |
855 | assignments. */ | |
856 | } | |
857 | ||
d166f048 JA |
858 | /* Check that we haven't incorrectly flagged a closed command substitution |
859 | as indicating we're in a command position. */ | |
e8ce775d | 860 | if (in_command_position && ti >= 0 && rl_line_buffer[ti] == '`' && |
bb70624e | 861 | *text != '`' && unclosed_pair (rl_line_buffer, end, "`") == 0) |
d166f048 JA |
862 | in_command_position = 0; |
863 | ||
864 | /* Special handling for command substitution. If *TEXT is a backquote, | |
865 | it can be the start or end of an old-style command substitution, or | |
866 | unmatched. If it's unmatched, both calls to unclosed_pair will | |
867 | succeed. */ | |
bb70624e JA |
868 | if (*text == '`' && |
869 | (in_command_position || (unclosed_pair (rl_line_buffer, start, "`") && | |
870 | unclosed_pair (rl_line_buffer, end, "`")))) | |
28ef6c31 | 871 | matches = rl_completion_matches (text, command_subst_completion_function); |
726f6388 | 872 | |
bb70624e JA |
873 | #if defined (PROGRAMMABLE_COMPLETION) |
874 | /* Attempt programmable completion. */ | |
875 | if (!matches && in_command_position == 0 && prog_completion_enabled && | |
876 | (num_progcomps () > 0) && current_prompt_string == ps1_prompt) | |
877 | { | |
878 | int s, e, foundcs; | |
879 | char *n; | |
880 | ||
881 | /* XXX - don't free the members */ | |
882 | if (prog_complete_matches) | |
883 | free (prog_complete_matches); | |
884 | prog_complete_matches = (char **)NULL; | |
885 | ||
886 | s = find_cmd_start (start); | |
887 | e = find_cmd_end (end); | |
888 | n = find_cmd_name (s); | |
889 | prog_complete_matches = programmable_completions (n, text, s, e, &foundcs); | |
890 | FREE (n); | |
891 | /* XXX - if we found a COMPSPEC for the command, just return whatever | |
892 | the programmable completion code returns, and disable the default | |
28ef6c31 JA |
893 | filename completion that readline will do unless the COPT_DEFAULT |
894 | option has been set with the `-o default' option to complete. */ | |
bb70624e JA |
895 | if (foundcs) |
896 | { | |
28ef6c31 JA |
897 | /* If the user specified that the compspec returns filenames, make |
898 | sure that readline knows it. | |
899 | if (foundcs & COPT_FILENAMES) | |
900 | rl_filename_completion_desired = 1; | |
bb70624e JA |
901 | /* Turn what the programmable completion code returns into what |
902 | readline wants. I should have made compute_lcd_of_matches | |
903 | external... */ | |
28ef6c31 JA |
904 | matches = rl_completion_matches (text, prog_complete_return); |
905 | if ((foundcs & COPT_DEFAULT) == 0) | |
906 | rl_attempted_completion_over = 1; /* no default */ | |
bb70624e JA |
907 | return (matches); |
908 | } | |
909 | } | |
910 | #endif | |
911 | ||
912 | /* New posix-style command substitution or variable name? */ | |
726f6388 | 913 | if (!matches && *text == '$') |
bb70624e JA |
914 | { |
915 | if (qc != '\'' && text[1] == '(') /* ) */ | |
28ef6c31 | 916 | matches = rl_completion_matches (text, command_subst_completion_function); |
bb70624e | 917 | else |
28ef6c31 | 918 | matches = rl_completion_matches (text, variable_completion_function); |
bb70624e | 919 | } |
726f6388 JA |
920 | |
921 | /* If the word starts in `~', and there is no slash in the word, then | |
922 | try completing this word as a username. */ | |
923 | if (!matches && *text == '~' && !strchr (text, '/')) | |
28ef6c31 | 924 | matches = rl_completion_matches (text, rl_username_completion_function); |
726f6388 JA |
925 | |
926 | /* Another one. Why not? If the word starts in '@', then look through | |
927 | the world of known hostnames for completion first. */ | |
ccc6cda3 | 928 | if (!matches && perform_hostname_completion && *text == '@') |
28ef6c31 | 929 | matches = rl_completion_matches (text, hostname_completion_function); |
726f6388 JA |
930 | |
931 | /* And last, (but not least) if this word is in a command position, then | |
932 | complete over possible command names, including aliases, functions, | |
933 | and command names. */ | |
934 | if (!matches && in_command_position) | |
935 | { | |
bb70624e JA |
936 | if (start == 0 && end == 0 && text[0] == '\0' && no_empty_command_completion) |
937 | { | |
938 | matches = (char **)NULL; | |
28ef6c31 | 939 | rl_ignore_some_completions_function = bash_ignore_everything; |
bb70624e JA |
940 | } |
941 | else | |
942 | { | |
28ef6c31 | 943 | matches = rl_completion_matches (text, command_word_completion_function); |
bb70624e JA |
944 | /* If we are attempting command completion and nothing matches, we |
945 | do not want readline to perform filename completion for us. We | |
946 | still want to be able to complete partial pathnames, so set the | |
947 | completion ignore function to something which will remove | |
948 | filenames and leave directories in the match list. */ | |
949 | if (matches == (char **)NULL) | |
28ef6c31 | 950 | rl_ignore_some_completions_function = bash_ignore_filenames; |
bb70624e | 951 | } |
726f6388 JA |
952 | } |
953 | ||
ccc6cda3 JA |
954 | /* This could be a globbing pattern, so try to expand it using pathname |
955 | expansion. */ | |
28ef6c31 | 956 | if (!matches && glob_pattern_p ((char *)text)) /* XXX fix const later */ |
e8ce775d | 957 | { |
28ef6c31 | 958 | matches = rl_completion_matches (text, glob_complete_word); |
e8ce775d JA |
959 | /* A glob expression that matches more than one filename is problematic. |
960 | If we match more than one filename, punt. */ | |
961 | if (matches && matches[1]) | |
962 | { | |
963 | free_array (matches); | |
964 | matches = (char **)0; | |
965 | } | |
966 | } | |
ccc6cda3 | 967 | |
726f6388 JA |
968 | return (matches); |
969 | } | |
970 | ||
971 | /* This is the function to call when the word to complete is in a position | |
972 | where a command word can be found. It grovels $PATH, looking for commands | |
973 | that match. It also scans aliases, function names, and the shell_builtin | |
974 | table. */ | |
bb70624e | 975 | char * |
726f6388 | 976 | command_word_completion_function (hint_text, state) |
28ef6c31 | 977 | const char *hint_text; |
726f6388 JA |
978 | int state; |
979 | { | |
980 | static char *hint = (char *)NULL; | |
981 | static char *path = (char *)NULL; | |
982 | static char *val = (char *)NULL; | |
983 | static char *filename_hint = (char *)NULL; | |
984 | static int path_index, hint_len, istate; | |
985 | static int mapping_over, local_index; | |
986 | static SHELL_VAR **varlist = (SHELL_VAR **)NULL; | |
987 | #if defined (ALIAS) | |
ccc6cda3 | 988 | static alias_t **alias_list = (alias_t **)NULL; |
726f6388 JA |
989 | #endif /* ALIAS */ |
990 | ||
991 | /* We have to map over the possibilities for command words. If we have | |
992 | no state, then make one just for that purpose. */ | |
726f6388 JA |
993 | if (!state) |
994 | { | |
995 | if (hint) | |
996 | free (hint); | |
997 | ||
998 | mapping_over = 0; | |
999 | val = (char *)NULL; | |
1000 | ||
1001 | /* If this is an absolute program name, do not check it against | |
1002 | aliases, reserved words, functions or builtins. We must check | |
1003 | whether or not it is unique, and, if so, whether that filename | |
1004 | is executable. */ | |
28ef6c31 | 1005 | if (absolute_program ((char *)hint_text)) |
726f6388 JA |
1006 | { |
1007 | /* Perform tilde expansion on what's passed, so we don't end up | |
1008 | passing filenames with tildes directly to stat(). */ | |
1009 | if (*hint_text == '~') | |
28ef6c31 | 1010 | hint = bash_tilde_expand ((char *)hint_text); |
726f6388 JA |
1011 | else |
1012 | hint = savestring (hint_text); | |
1013 | hint_len = strlen (hint); | |
1014 | ||
1015 | if (filename_hint) | |
1016 | free (filename_hint); | |
1017 | filename_hint = savestring (hint); | |
1018 | ||
1019 | mapping_over = 4; | |
1020 | istate = 0; | |
1021 | goto inner; | |
1022 | } | |
1023 | ||
1024 | hint = savestring (hint_text); | |
1025 | hint_len = strlen (hint); | |
1026 | ||
1027 | path = get_string_value ("PATH"); | |
1028 | path_index = 0; | |
1029 | ||
1030 | /* Initialize the variables for each type of command word. */ | |
1031 | local_index = 0; | |
1032 | ||
1033 | if (varlist) | |
1034 | free (varlist); | |
1035 | ||
1036 | varlist = all_visible_functions (); | |
1037 | ||
1038 | #if defined (ALIAS) | |
1039 | if (alias_list) | |
1040 | free (alias_list); | |
1041 | ||
1042 | alias_list = all_aliases (); | |
1043 | #endif /* ALIAS */ | |
1044 | } | |
1045 | ||
1046 | /* mapping_over says what we are currently hacking. Note that every case | |
1047 | in this list must fall through when there are no more possibilities. */ | |
1048 | ||
1049 | switch (mapping_over) | |
1050 | { | |
1051 | case 0: /* Aliases come first. */ | |
1052 | #if defined (ALIAS) | |
1053 | while (alias_list && alias_list[local_index]) | |
1054 | { | |
1055 | register char *alias; | |
1056 | ||
1057 | alias = alias_list[local_index++]->name; | |
1058 | ||
1059 | if (STREQN (alias, hint, hint_len)) | |
1060 | return (savestring (alias)); | |
1061 | } | |
1062 | #endif /* ALIAS */ | |
1063 | local_index = 0; | |
1064 | mapping_over++; | |
1065 | ||
1066 | case 1: /* Then shell reserved words. */ | |
1067 | { | |
1068 | while (word_token_alist[local_index].word) | |
1069 | { | |
1070 | register char *reserved_word; | |
1071 | ||
1072 | reserved_word = word_token_alist[local_index++].word; | |
1073 | ||
1074 | if (STREQN (reserved_word, hint, hint_len)) | |
1075 | return (savestring (reserved_word)); | |
1076 | } | |
1077 | local_index = 0; | |
1078 | mapping_over++; | |
1079 | } | |
1080 | ||
1081 | case 2: /* Then function names. */ | |
1082 | while (varlist && varlist[local_index]) | |
1083 | { | |
1084 | register char *varname; | |
1085 | ||
1086 | varname = varlist[local_index++]->name; | |
1087 | ||
1088 | if (STREQN (varname, hint, hint_len)) | |
1089 | return (savestring (varname)); | |
1090 | } | |
1091 | local_index = 0; | |
1092 | mapping_over++; | |
1093 | ||
1094 | case 3: /* Then shell builtins. */ | |
1095 | for (; local_index < num_shell_builtins; local_index++) | |
1096 | { | |
1097 | /* Ignore it if it doesn't have a function pointer or if it | |
1098 | is not currently enabled. */ | |
1099 | if (!shell_builtins[local_index].function || | |
1100 | (shell_builtins[local_index].flags & BUILTIN_ENABLED) == 0) | |
1101 | continue; | |
1102 | ||
1103 | if (STREQN (shell_builtins[local_index].name, hint, hint_len)) | |
1104 | { | |
1105 | int i = local_index++; | |
1106 | ||
1107 | return (savestring (shell_builtins[i].name)); | |
1108 | } | |
1109 | } | |
1110 | local_index = 0; | |
1111 | mapping_over++; | |
1112 | } | |
1113 | ||
ccc6cda3 | 1114 | /* Repeatedly call filename_completion_function while we have |
726f6388 JA |
1115 | members of PATH left. Question: should we stat each file? |
1116 | Answer: we call executable_file () on each file. */ | |
1117 | outer: | |
1118 | ||
1119 | istate = (val != (char *)NULL); | |
1120 | ||
1121 | if (!istate) | |
1122 | { | |
1123 | char *current_path; | |
1124 | ||
1125 | /* Get the next directory from the path. If there is none, then we | |
1126 | are all done. */ | |
1127 | if (!path || !path[path_index] || | |
1128 | (current_path = extract_colon_unit (path, &path_index)) == 0) | |
1129 | return ((char *)NULL); | |
1130 | ||
1131 | if (*current_path == 0) | |
1132 | { | |
1133 | free (current_path); | |
1134 | current_path = savestring ("."); | |
1135 | } | |
1136 | ||
1137 | if (*current_path == '~') | |
1138 | { | |
1139 | char *t; | |
1140 | ||
ccc6cda3 | 1141 | t = bash_tilde_expand (current_path); |
726f6388 JA |
1142 | free (current_path); |
1143 | current_path = t; | |
1144 | } | |
1145 | ||
1146 | if (filename_hint) | |
1147 | free (filename_hint); | |
1148 | ||
1149 | filename_hint = xmalloc (2 + strlen (current_path) + hint_len); | |
1150 | sprintf (filename_hint, "%s/%s", current_path, hint); | |
1151 | ||
1152 | free (current_path); | |
1153 | } | |
1154 | ||
1155 | inner: | |
28ef6c31 | 1156 | val = rl_filename_completion_function (filename_hint, istate); |
726f6388 JA |
1157 | istate = 1; |
1158 | ||
ccc6cda3 | 1159 | if (val == 0) |
726f6388 JA |
1160 | { |
1161 | /* If the hint text is an absolute program, then don't bother | |
1162 | searching through PATH. */ | |
1163 | if (absolute_program (hint)) | |
1164 | return ((char *)NULL); | |
1165 | ||
1166 | goto outer; | |
1167 | } | |
1168 | else | |
1169 | { | |
d166f048 | 1170 | int match, freetemp; |
726f6388 JA |
1171 | char *temp; |
1172 | ||
1173 | if (absolute_program (hint)) | |
1174 | { | |
1175 | match = strncmp (val, hint, hint_len) == 0; | |
1176 | /* If we performed tilde expansion, restore the original | |
1177 | filename. */ | |
1178 | if (*hint_text == '~') | |
1179 | { | |
1180 | int l, tl, vl; | |
1181 | vl = strlen (val); | |
1182 | tl = strlen (hint_text); | |
1183 | l = vl - hint_len; /* # of chars added */ | |
1184 | temp = xmalloc (l + 2 + tl); | |
1185 | strcpy (temp, hint_text); | |
1186 | strcpy (temp + tl, val + vl - l); | |
1187 | } | |
1188 | else | |
1189 | temp = savestring (val); | |
d166f048 | 1190 | freetemp = 1; |
726f6388 JA |
1191 | } |
1192 | else | |
1193 | { | |
1194 | temp = strrchr (val, '/'); | |
1195 | ||
1196 | if (temp) | |
1197 | { | |
1198 | temp++; | |
d166f048 | 1199 | freetemp = match = strncmp (temp, hint, hint_len) == 0; |
726f6388 JA |
1200 | if (match) |
1201 | temp = savestring (temp); | |
1202 | } | |
1203 | else | |
d166f048 | 1204 | freetemp = match = 0; |
726f6388 JA |
1205 | } |
1206 | ||
ccc6cda3 JA |
1207 | /* If we have found a match, and it is an executable file or a |
1208 | directory name, return it. */ | |
28ef6c31 | 1209 | if (match && executable_or_directory (val)) |
726f6388 JA |
1210 | { |
1211 | free (val); | |
1212 | val = ""; /* So it won't be NULL. */ | |
1213 | return (temp); | |
1214 | } | |
1215 | else | |
1216 | { | |
d166f048 JA |
1217 | if (freetemp) |
1218 | free (temp); | |
726f6388 JA |
1219 | free (val); |
1220 | goto inner; | |
1221 | } | |
1222 | } | |
1223 | } | |
1224 | ||
d166f048 | 1225 | /* Completion inside an unterminated command substitution. */ |
726f6388 JA |
1226 | static char * |
1227 | command_subst_completion_function (text, state) | |
28ef6c31 | 1228 | const char *text; |
ccc6cda3 | 1229 | int state; |
726f6388 JA |
1230 | { |
1231 | static char **matches = (char **)NULL; | |
28ef6c31 JA |
1232 | static const char *orig_start; |
1233 | static char *filename_text = (char *)NULL; | |
726f6388 | 1234 | static int cmd_index, start_len; |
ccc6cda3 | 1235 | char *value; |
726f6388 JA |
1236 | |
1237 | if (state == 0) | |
1238 | { | |
1239 | if (filename_text) | |
1240 | free (filename_text); | |
1241 | orig_start = text; | |
1242 | if (*text == '`') | |
28ef6c31 | 1243 | text++; |
cce855bc | 1244 | else if (*text == '$' && text[1] == '(') /* ) */ |
28ef6c31 | 1245 | text += 2; |
726f6388 JA |
1246 | start_len = text - orig_start; |
1247 | filename_text = savestring (text); | |
1248 | if (matches) | |
1249 | free (matches); | |
28ef6c31 | 1250 | matches = rl_completion_matches (filename_text, command_word_completion_function); |
726f6388 JA |
1251 | cmd_index = 0; |
1252 | } | |
1253 | ||
1254 | if (!matches || !matches[cmd_index]) | |
1255 | { | |
1256 | rl_filename_quoting_desired = 0; /* disable quoting */ | |
1257 | return ((char *)NULL); | |
1258 | } | |
1259 | else | |
1260 | { | |
726f6388 JA |
1261 | value = xmalloc (1 + start_len + strlen (matches[cmd_index])); |
1262 | ||
1263 | if (start_len == 1) | |
28ef6c31 | 1264 | value[0] = *orig_start; |
726f6388 | 1265 | else |
28ef6c31 | 1266 | strncpy (value, orig_start, start_len); |
726f6388 JA |
1267 | |
1268 | strcpy (value + start_len, matches[cmd_index]); | |
1269 | ||
1270 | cmd_index++; | |
1271 | return (value); | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | /* Okay, now we write the entry_function for variable completion. */ | |
1276 | static char * | |
1277 | variable_completion_function (text, state) | |
28ef6c31 | 1278 | const char *text; |
726f6388 | 1279 | int state; |
726f6388 | 1280 | { |
bb70624e | 1281 | static char **varlist = (char **)NULL; |
726f6388 JA |
1282 | static int varlist_index; |
1283 | static char *varname = (char *)NULL; | |
1284 | static int namelen; | |
1285 | static int first_char, first_char_loc; | |
1286 | ||
1287 | if (!state) | |
1288 | { | |
1289 | if (varname) | |
1290 | free (varname); | |
1291 | ||
1292 | first_char_loc = 0; | |
1293 | first_char = text[0]; | |
1294 | ||
1295 | if (first_char == '$') | |
1296 | first_char_loc++; | |
1297 | ||
ccc6cda3 | 1298 | if (text[first_char_loc] == '{') |
28ef6c31 | 1299 | first_char_loc++; |
ccc6cda3 | 1300 | |
726f6388 JA |
1301 | varname = savestring (text + first_char_loc); |
1302 | ||
1303 | namelen = strlen (varname); | |
1304 | if (varlist) | |
bb70624e | 1305 | free_array (varlist); |
726f6388 | 1306 | |
bb70624e JA |
1307 | varlist = all_variables_matching_prefix (varname); |
1308 | varlist_index = 0; | |
726f6388 JA |
1309 | } |
1310 | ||
1311 | if (!varlist || !varlist[varlist_index]) | |
1312 | { | |
1313 | return ((char *)NULL); | |
1314 | } | |
1315 | else | |
1316 | { | |
bb70624e | 1317 | char *value = xmalloc (4 + strlen (varlist[varlist_index])); |
726f6388 JA |
1318 | |
1319 | if (first_char_loc) | |
ccc6cda3 JA |
1320 | { |
1321 | value[0] = first_char; | |
1322 | if (first_char_loc == 2) | |
1323 | value[1] = '{'; | |
1324 | } | |
726f6388 | 1325 | |
bb70624e | 1326 | strcpy (value + first_char_loc, varlist[varlist_index]); |
ccc6cda3 | 1327 | if (first_char_loc == 2) |
28ef6c31 | 1328 | strcat (value, "}"); |
726f6388 JA |
1329 | |
1330 | varlist_index++; | |
1331 | return (value); | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | /* How about a completion function for hostnames? */ | |
1336 | static char * | |
1337 | hostname_completion_function (text, state) | |
28ef6c31 | 1338 | const char *text; |
726f6388 | 1339 | int state; |
726f6388 JA |
1340 | { |
1341 | static char **list = (char **)NULL; | |
1342 | static int list_index = 0; | |
1343 | static int first_char, first_char_loc; | |
1344 | ||
1345 | /* If we don't have any state, make some. */ | |
ccc6cda3 | 1346 | if (state == 0) |
726f6388 | 1347 | { |
ccc6cda3 | 1348 | FREE (list); |
726f6388 JA |
1349 | |
1350 | list = (char **)NULL; | |
1351 | ||
1352 | first_char_loc = 0; | |
1353 | first_char = *text; | |
1354 | ||
1355 | if (first_char == '@') | |
1356 | first_char_loc++; | |
1357 | ||
1358 | list = hostnames_matching (&text[first_char_loc]); | |
1359 | list_index = 0; | |
1360 | } | |
1361 | ||
1362 | if (list && list[list_index]) | |
1363 | { | |
ccc6cda3 | 1364 | char *t; |
726f6388 | 1365 | |
ccc6cda3 | 1366 | t = xmalloc (2 + strlen (list[list_index])); |
726f6388 JA |
1367 | *t = first_char; |
1368 | strcpy (t + first_char_loc, list[list_index]); | |
1369 | list_index++; | |
1370 | return (t); | |
1371 | } | |
ccc6cda3 JA |
1372 | |
1373 | return ((char *)NULL); | |
726f6388 JA |
1374 | } |
1375 | ||
cce855bc JA |
1376 | /* Functions to perform history and alias expansions on the current line. */ |
1377 | ||
1378 | #if defined (BANG_HISTORY) | |
1379 | /* Perform history expansion on the current line. If no history expansion | |
1380 | is done, pre_process_line() returns what it was passed, so we need to | |
1381 | allocate a new line here. */ | |
726f6388 JA |
1382 | static char * |
1383 | history_expand_line_internal (line) | |
1384 | char *line; | |
1385 | { | |
1386 | char *new_line; | |
1387 | ||
1388 | new_line = pre_process_line (line, 0, 0); | |
d166f048 | 1389 | return (new_line == line) ? savestring (line) : new_line; |
726f6388 | 1390 | } |
726f6388 JA |
1391 | #endif |
1392 | ||
1393 | /* There was an error in expansion. Let the preprocessor print | |
1394 | the error here. */ | |
1395 | static void | |
1396 | cleanup_expansion_error () | |
1397 | { | |
1398 | char *to_free; | |
1399 | ||
1400 | fprintf (rl_outstream, "\r\n"); | |
1401 | to_free = pre_process_line (rl_line_buffer, 1, 0); | |
d166f048 JA |
1402 | if (to_free != rl_line_buffer) |
1403 | free (to_free); | |
726f6388 JA |
1404 | putc ('\r', rl_outstream); |
1405 | rl_forced_update_display (); | |
1406 | } | |
1407 | ||
1408 | /* If NEW_LINE differs from what is in the readline line buffer, add an | |
1409 | undo record to get from the readline line buffer contents to the new | |
1410 | line and make NEW_LINE the current readline line. */ | |
1411 | static void | |
1412 | maybe_make_readline_line (new_line) | |
1413 | char *new_line; | |
1414 | { | |
1415 | if (strcmp (new_line, rl_line_buffer) != 0) | |
1416 | { | |
1417 | rl_point = rl_end; | |
1418 | ||
1419 | rl_add_undo (UNDO_BEGIN, 0, 0, 0); | |
1420 | rl_delete_text (0, rl_point); | |
1421 | rl_point = rl_end = 0; | |
1422 | rl_insert_text (new_line); | |
1423 | rl_add_undo (UNDO_END, 0, 0, 0); | |
1424 | } | |
1425 | } | |
1426 | ||
1427 | /* Make NEW_LINE be the current readline line. This frees NEW_LINE. */ | |
1428 | static void | |
1429 | set_up_new_line (new_line) | |
1430 | char *new_line; | |
1431 | { | |
1432 | int old_point = rl_point; | |
1433 | int at_end = rl_point == rl_end; | |
1434 | ||
1435 | /* If the line was history and alias expanded, then make that | |
1436 | be one thing to undo. */ | |
1437 | maybe_make_readline_line (new_line); | |
1438 | free (new_line); | |
1439 | ||
1440 | /* Place rl_point where we think it should go. */ | |
1441 | if (at_end) | |
1442 | rl_point = rl_end; | |
1443 | else if (old_point < rl_end) | |
1444 | { | |
1445 | rl_point = old_point; | |
1446 | if (!whitespace (rl_line_buffer[rl_point])) | |
b72432fd | 1447 | rl_forward_word (1, 0); |
726f6388 JA |
1448 | } |
1449 | } | |
1450 | ||
cce855bc JA |
1451 | #if defined (ALIAS) |
1452 | /* Expand aliases in the current readline line. */ | |
1453 | static int | |
28ef6c31 JA |
1454 | alias_expand_line (count, ignore) |
1455 | int count, ignore; | |
cce855bc JA |
1456 | { |
1457 | char *new_line; | |
1458 | ||
1459 | new_line = alias_expand (rl_line_buffer); | |
1460 | ||
1461 | if (new_line) | |
1462 | { | |
1463 | set_up_new_line (new_line); | |
1464 | return (0); | |
1465 | } | |
1466 | else | |
1467 | { | |
1468 | cleanup_expansion_error (); | |
1469 | return (1); | |
1470 | } | |
1471 | } | |
1472 | #endif | |
1473 | ||
1474 | #if defined (BANG_HISTORY) | |
726f6388 | 1475 | /* History expand the line. */ |
cce855bc | 1476 | static int |
28ef6c31 JA |
1477 | history_expand_line (count, ignore) |
1478 | int count, ignore; | |
726f6388 JA |
1479 | { |
1480 | char *new_line; | |
1481 | ||
1482 | new_line = history_expand_line_internal (rl_line_buffer); | |
1483 | ||
1484 | if (new_line) | |
cce855bc JA |
1485 | { |
1486 | set_up_new_line (new_line); | |
1487 | return (0); | |
1488 | } | |
726f6388 | 1489 | else |
cce855bc JA |
1490 | { |
1491 | cleanup_expansion_error (); | |
1492 | return (1); | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | /* Expand history substitutions in the current line and then insert a | |
28ef6c31 | 1497 | space (hopefully close to where we were before). */ |
cce855bc | 1498 | static int |
28ef6c31 JA |
1499 | tcsh_magic_space (count, ignore) |
1500 | int count, ignore; | |
cce855bc | 1501 | { |
28ef6c31 JA |
1502 | int dist_from_end, old_point; |
1503 | ||
1504 | old_point = rl_point; | |
1505 | dist_from_end = rl_end - rl_point; | |
1506 | if (history_expand_line (count, ignore) == 0) | |
cce855bc | 1507 | { |
28ef6c31 JA |
1508 | /* Try a simple heuristic from Stephen Gildea <gildea@intouchsys.com>. |
1509 | This works if all expansions were before rl_point or if no expansions | |
1510 | were performed. */ | |
1511 | rl_point = (old_point == 0) ? old_point : rl_end - dist_from_end; | |
cce855bc JA |
1512 | rl_insert (1, ' '); |
1513 | return (0); | |
1514 | } | |
1515 | else | |
1516 | return (1); | |
726f6388 | 1517 | } |
cce855bc | 1518 | #endif |
ccc6cda3 | 1519 | |
726f6388 | 1520 | /* History and alias expand the line. */ |
cce855bc | 1521 | static int |
28ef6c31 JA |
1522 | history_and_alias_expand_line (count, ignore) |
1523 | int count, ignore; | |
726f6388 JA |
1524 | { |
1525 | char *new_line; | |
1526 | ||
1527 | new_line = pre_process_line (rl_line_buffer, 0, 0); | |
d166f048 JA |
1528 | if (new_line == rl_line_buffer) |
1529 | new_line = savestring (new_line); | |
726f6388 JA |
1530 | |
1531 | #if defined (ALIAS) | |
1532 | if (new_line) | |
1533 | { | |
1534 | char *alias_line; | |
1535 | ||
1536 | alias_line = alias_expand (new_line); | |
1537 | free (new_line); | |
1538 | new_line = alias_line; | |
1539 | } | |
1540 | #endif /* ALIAS */ | |
1541 | ||
1542 | if (new_line) | |
cce855bc JA |
1543 | { |
1544 | set_up_new_line (new_line); | |
1545 | return (0); | |
1546 | } | |
726f6388 | 1547 | else |
cce855bc JA |
1548 | { |
1549 | cleanup_expansion_error (); | |
1550 | return (1); | |
1551 | } | |
726f6388 JA |
1552 | } |
1553 | ||
1554 | /* History and alias expand the line, then perform the shell word | |
cce855bc JA |
1555 | expansions by calling expand_string. This can't use set_up_new_line() |
1556 | because we want the variable expansions as a separate undo'able | |
1557 | set of operations. */ | |
28ef6c31 JA |
1558 | static int |
1559 | shell_expand_line (count, ignore) | |
1560 | int count, ignore; | |
726f6388 JA |
1561 | { |
1562 | char *new_line; | |
ccc6cda3 | 1563 | WORD_LIST *expanded_string; |
726f6388 JA |
1564 | |
1565 | new_line = pre_process_line (rl_line_buffer, 0, 0); | |
d166f048 JA |
1566 | if (new_line == rl_line_buffer) |
1567 | new_line = savestring (new_line); | |
726f6388 JA |
1568 | |
1569 | #if defined (ALIAS) | |
1570 | if (new_line) | |
1571 | { | |
1572 | char *alias_line; | |
1573 | ||
1574 | alias_line = alias_expand (new_line); | |
1575 | free (new_line); | |
1576 | new_line = alias_line; | |
1577 | } | |
1578 | #endif /* ALIAS */ | |
1579 | ||
1580 | if (new_line) | |
1581 | { | |
1582 | int old_point = rl_point; | |
1583 | int at_end = rl_point == rl_end; | |
1584 | ||
1585 | /* If the line was history and alias expanded, then make that | |
1586 | be one thing to undo. */ | |
1587 | maybe_make_readline_line (new_line); | |
1588 | free (new_line); | |
1589 | ||
1590 | /* If there is variable expansion to perform, do that as a separate | |
1591 | operation to be undone. */ | |
d166f048 JA |
1592 | new_line = savestring (rl_line_buffer); |
1593 | expanded_string = expand_string (new_line, 0); | |
1594 | FREE (new_line); | |
ccc6cda3 JA |
1595 | if (expanded_string == 0) |
1596 | { | |
1597 | new_line = xmalloc (1); | |
1598 | new_line[0] = '\0'; | |
1599 | } | |
1600 | else | |
1601 | { | |
1602 | new_line = string_list (expanded_string); | |
1603 | dispose_words (expanded_string); | |
1604 | } | |
726f6388 | 1605 | |
ccc6cda3 JA |
1606 | maybe_make_readline_line (new_line); |
1607 | free (new_line); | |
726f6388 | 1608 | |
ccc6cda3 JA |
1609 | /* Place rl_point where we think it should go. */ |
1610 | if (at_end) | |
1611 | rl_point = rl_end; | |
1612 | else if (old_point < rl_end) | |
1613 | { | |
1614 | rl_point = old_point; | |
1615 | if (!whitespace (rl_line_buffer[rl_point])) | |
b72432fd | 1616 | rl_forward_word (1, 0); |
ccc6cda3 | 1617 | } |
28ef6c31 | 1618 | return 0; |
726f6388 JA |
1619 | } |
1620 | else | |
28ef6c31 JA |
1621 | { |
1622 | cleanup_expansion_error (); | |
1623 | return 1; | |
1624 | } | |
726f6388 JA |
1625 | } |
1626 | ||
cce855bc JA |
1627 | /* Define NO_FORCE_FIGNORE if you want to match filenames that would |
1628 | otherwise be ignored if they are the only possible matches. */ | |
1629 | /* #define NO_FORCE_FIGNORE */ | |
1630 | ||
ccc6cda3 JA |
1631 | /* If FIGNORE is set, then don't match files with the given suffixes when |
1632 | completing filenames. If only one of the possibilities has an acceptable | |
726f6388 JA |
1633 | suffix, delete the others, else just return and let the completer |
1634 | signal an error. It is called by the completer when real | |
1635 | completions are done on filenames by the completer's internal | |
1636 | function, not for completion lists (M-?) and not on "other" | |
ccc6cda3 | 1637 | completion types, such as hostnames or commands. */ |
726f6388 | 1638 | |
ccc6cda3 | 1639 | static struct ignorevar fignore = |
726f6388 | 1640 | { |
ccc6cda3 JA |
1641 | "FIGNORE", |
1642 | (struct ign *)0, | |
1643 | 0, | |
1644 | (char *)0, | |
1645 | (Function *) 0, | |
1646 | }; | |
726f6388 | 1647 | |
726f6388 | 1648 | static void |
ccc6cda3 | 1649 | _ignore_completion_names (names, name_func) |
726f6388 JA |
1650 | char **names; |
1651 | Function *name_func; | |
1652 | { | |
1653 | char **newnames; | |
1654 | int idx, nidx; | |
cce855bc JA |
1655 | #ifdef NO_FORCE_FIGNORE |
1656 | char **oldnames; | |
1657 | int oidx; | |
1658 | #endif | |
726f6388 JA |
1659 | |
1660 | /* If there is only one completion, see if it is acceptable. If it is | |
1661 | not, free it up. In any case, short-circuit and return. This is a | |
1662 | special case because names[0] is not the prefix of the list of names | |
1663 | if there is only one completion; it is the completion itself. */ | |
1664 | if (names[1] == (char *)0) | |
1665 | { | |
cce855bc | 1666 | #ifndef NO_FORCE_FIGNORE |
726f6388 | 1667 | if ((*name_func) (names[0]) == 0) |
28ef6c31 JA |
1668 | { |
1669 | free (names[0]); | |
1670 | names[0] = (char *)NULL; | |
1671 | } | |
cce855bc | 1672 | #endif |
726f6388 JA |
1673 | return; |
1674 | } | |
1675 | ||
1676 | /* Allocate space for array to hold list of pointers to matching | |
1677 | filenames. The pointers are copied back to NAMES when done. */ | |
1678 | for (nidx = 1; names[nidx]; nidx++) | |
1679 | ; | |
bb70624e | 1680 | newnames = alloc_array (nidx + 1); |
cce855bc | 1681 | #ifdef NO_FORCE_FIGNORE |
bb70624e | 1682 | oldnames = alloc_array (nidx - 1); |
cce855bc JA |
1683 | oidx = 0; |
1684 | #endif | |
726f6388 JA |
1685 | |
1686 | newnames[0] = names[0]; | |
1687 | for (idx = nidx = 1; names[idx]; idx++) | |
1688 | { | |
1689 | if ((*name_func) (names[idx])) | |
1690 | newnames[nidx++] = names[idx]; | |
1691 | else | |
cce855bc | 1692 | #ifndef NO_FORCE_FIGNORE |
28ef6c31 | 1693 | free (names[idx]); |
cce855bc JA |
1694 | #else |
1695 | oldnames[oidx++] = names[idx]; | |
1696 | #endif | |
726f6388 JA |
1697 | } |
1698 | ||
1699 | newnames[nidx] = (char *)NULL; | |
1700 | ||
1701 | /* If none are acceptable then let the completer handle it. */ | |
1702 | if (nidx == 1) | |
1703 | { | |
cce855bc | 1704 | #ifndef NO_FORCE_FIGNORE |
726f6388 JA |
1705 | free (names[0]); |
1706 | names[0] = (char *)NULL; | |
cce855bc JA |
1707 | #else |
1708 | free (oldnames); | |
1709 | #endif | |
726f6388 JA |
1710 | free (newnames); |
1711 | return; | |
1712 | } | |
1713 | ||
cce855bc JA |
1714 | #ifdef NO_FORCE_FIGNORE |
1715 | while (oidx) | |
1716 | free (oldnames[--oidx]); | |
1717 | free (oldnames); | |
1718 | #endif | |
1719 | ||
726f6388 JA |
1720 | /* If only one is acceptable, copy it to names[0] and return. */ |
1721 | if (nidx == 2) | |
1722 | { | |
1723 | free (names[0]); | |
1724 | names[0] = newnames[1]; | |
1725 | names[1] = (char *)NULL; | |
1726 | free (newnames); | |
1727 | return; | |
1728 | } | |
ccc6cda3 | 1729 | |
726f6388 JA |
1730 | /* Copy the acceptable names back to NAMES, set the new array end, |
1731 | and return. */ | |
1732 | for (nidx = 1; newnames[nidx]; nidx++) | |
1733 | names[nidx] = newnames[nidx]; | |
1734 | names[nidx] = (char *)NULL; | |
ccc6cda3 JA |
1735 | free (newnames); |
1736 | } | |
1737 | ||
1738 | static int | |
1739 | name_is_acceptable (name) | |
1740 | char *name; | |
1741 | { | |
1742 | struct ign *p; | |
1743 | int nlen; | |
1744 | ||
1745 | for (nlen = strlen (name), p = fignore.ignores; p->val; p++) | |
1746 | { | |
1747 | if (nlen > p->len && p->len > 0 && STREQ (p->val, &name[nlen - p->len])) | |
1748 | return (0); | |
1749 | } | |
1750 | ||
1751 | return (1); | |
726f6388 JA |
1752 | } |
1753 | ||
b72432fd JA |
1754 | #if 0 |
1755 | static int | |
1756 | ignore_dot_names (name) | |
1757 | char *name; | |
1758 | { | |
1759 | return (name[0] != '.'); | |
1760 | } | |
1761 | #endif | |
1762 | ||
28ef6c31 | 1763 | static int |
726f6388 JA |
1764 | filename_completion_ignore (names) |
1765 | char **names; | |
1766 | { | |
b72432fd JA |
1767 | #if 0 |
1768 | if (glob_dot_filenames == 0) | |
1769 | _ignore_completion_names (names, ignore_dot_names); | |
1770 | #endif | |
1771 | ||
ccc6cda3 | 1772 | setup_ignore_patterns (&fignore); |
726f6388 | 1773 | |
ccc6cda3 | 1774 | if (fignore.num_ignores == 0) |
28ef6c31 | 1775 | return 0; |
726f6388 | 1776 | |
ccc6cda3 | 1777 | _ignore_completion_names (names, name_is_acceptable); |
28ef6c31 JA |
1778 | |
1779 | return 0; | |
726f6388 JA |
1780 | } |
1781 | ||
1782 | /* Return 1 if NAME is a directory. */ | |
1783 | static int | |
1784 | test_for_directory (name) | |
1785 | char *name; | |
1786 | { | |
1787 | struct stat finfo; | |
1788 | char *fn; | |
1789 | ||
ccc6cda3 | 1790 | fn = bash_tilde_expand (name); |
726f6388 JA |
1791 | if (stat (fn, &finfo) != 0) |
1792 | { | |
1793 | free (fn); | |
1794 | return 0; | |
1795 | } | |
1796 | free (fn); | |
1797 | return (S_ISDIR (finfo.st_mode)); | |
1798 | } | |
1799 | ||
1800 | /* Remove files from NAMES, leaving directories. */ | |
28ef6c31 | 1801 | static int |
726f6388 JA |
1802 | bash_ignore_filenames (names) |
1803 | char **names; | |
1804 | { | |
ccc6cda3 | 1805 | _ignore_completion_names (names, test_for_directory); |
28ef6c31 | 1806 | return 0; |
726f6388 JA |
1807 | } |
1808 | ||
bb70624e JA |
1809 | static int |
1810 | return_zero (name) | |
1811 | char *name; | |
1812 | { | |
1813 | return 0; | |
1814 | } | |
1815 | ||
28ef6c31 | 1816 | static int |
bb70624e JA |
1817 | bash_ignore_everything (names) |
1818 | char **names; | |
1819 | { | |
1820 | _ignore_completion_names (names, return_zero); | |
28ef6c31 | 1821 | return 0; |
bb70624e JA |
1822 | } |
1823 | ||
726f6388 JA |
1824 | /* Handle symbolic link references and other directory name |
1825 | expansions while hacking completion. */ | |
1826 | static int | |
1827 | bash_directory_completion_hook (dirname) | |
1828 | char **dirname; | |
1829 | { | |
b72432fd | 1830 | char *local_dirname, *new_dirname, *t; |
bb70624e | 1831 | int return_value, should_expand_dirname; |
726f6388 JA |
1832 | WORD_LIST *wl; |
1833 | ||
bb70624e | 1834 | return_value = should_expand_dirname = 0; |
726f6388 | 1835 | local_dirname = *dirname; |
bb70624e JA |
1836 | |
1837 | #if 0 | |
1838 | should_expand_dirname = strchr (local_dirname, '$') || strchr (local_dirname, '`'); | |
1839 | #else | |
1840 | if (strchr (local_dirname, '$')) | |
1841 | should_expand_dirname = 1; | |
1842 | else | |
1843 | { | |
1844 | t = strchr (local_dirname, '`'); | |
1845 | if (t && unclosed_pair (local_dirname, strlen (local_dirname), "`") == 0) | |
1846 | should_expand_dirname = 1; | |
1847 | } | |
1848 | #endif | |
1849 | ||
1850 | if (should_expand_dirname) | |
726f6388 | 1851 | { |
bb70624e | 1852 | new_dirname = savestring (local_dirname); |
b72432fd | 1853 | wl = expand_string (new_dirname, 0); |
726f6388 JA |
1854 | if (wl) |
1855 | { | |
1856 | *dirname = string_list (wl); | |
1857 | /* Tell the completer to replace the directory name only if we | |
1858 | actually expanded something. */ | |
1859 | return_value = STREQ (local_dirname, *dirname) == 0; | |
1860 | free (local_dirname); | |
b72432fd | 1861 | free (new_dirname); |
726f6388 JA |
1862 | dispose_words (wl); |
1863 | local_dirname = *dirname; | |
1864 | } | |
1865 | else | |
1866 | { | |
b72432fd | 1867 | free (new_dirname); |
726f6388 | 1868 | free (local_dirname); |
ccc6cda3 JA |
1869 | *dirname = xmalloc (1); |
1870 | **dirname = '\0'; | |
726f6388 JA |
1871 | return 1; |
1872 | } | |
1873 | } | |
1874 | ||
1875 | if (!no_symbolic_links && (local_dirname[0] != '.' || local_dirname[1])) | |
1876 | { | |
1877 | char *temp1, *temp2; | |
1878 | int len1, len2; | |
1879 | ||
1880 | t = get_working_directory ("symlink-hook"); | |
1881 | temp1 = make_absolute (local_dirname, t); | |
1882 | free (t); | |
28ef6c31 | 1883 | temp2 = sh_canonpath (temp1, PATH_CHECKDOTDOT|PATH_CHECKEXISTS); |
ccc6cda3 JA |
1884 | /* If we can't canonicalize, bail. */ |
1885 | if (temp2 == 0) | |
1886 | { | |
1887 | free (temp1); | |
1888 | return 1; | |
1889 | } | |
726f6388 JA |
1890 | len1 = strlen (temp1); |
1891 | if (temp1[len1 - 1] == '/') | |
28ef6c31 | 1892 | { |
726f6388 | 1893 | len2 = strlen (temp2); |
28ef6c31 JA |
1894 | temp2 = xrealloc (temp2, len2 + 2); |
1895 | temp2[len2] = '/'; | |
1896 | temp2[len2 + 1] = '\0'; | |
1897 | } | |
726f6388 JA |
1898 | free (local_dirname); |
1899 | *dirname = temp2; | |
1900 | free (temp1); | |
1901 | } | |
1902 | return (return_value); | |
1903 | } | |
1904 | ||
726f6388 | 1905 | static char **history_completion_array = (char **)NULL; |
ccc6cda3 JA |
1906 | static int harry_size; |
1907 | static int harry_len; | |
726f6388 JA |
1908 | |
1909 | static void | |
1910 | build_history_completion_array () | |
1911 | { | |
ccc6cda3 JA |
1912 | register int i, j; |
1913 | HIST_ENTRY **hlist; | |
1914 | char **tokens; | |
726f6388 JA |
1915 | |
1916 | /* First, clear out the current dynamic history completion list. */ | |
1917 | if (harry_size) | |
1918 | { | |
1919 | for (i = 0; history_completion_array[i]; i++) | |
1920 | free (history_completion_array[i]); | |
1921 | ||
1922 | free (history_completion_array); | |
1923 | ||
1924 | history_completion_array = (char **)NULL; | |
1925 | harry_size = 0; | |
1926 | harry_len = 0; | |
1927 | } | |
1928 | ||
1929 | /* Next, grovel each line of history, making each shell-sized token | |
1930 | a separate entry in the history_completion_array. */ | |
ccc6cda3 | 1931 | hlist = history_list (); |
726f6388 | 1932 | |
ccc6cda3 JA |
1933 | if (hlist) |
1934 | { | |
1935 | for (i = 0; hlist[i]; i++) | |
1936 | { | |
1937 | /* Separate each token, and place into an array. */ | |
1938 | tokens = history_tokenize (hlist[i]->line); | |
726f6388 | 1939 | |
ccc6cda3 JA |
1940 | for (j = 0; tokens && tokens[j]; j++) |
1941 | { | |
1942 | if (harry_len + 2 > harry_size) | |
1943 | { | |
1944 | harry_size += 10; | |
726f6388 | 1945 | history_completion_array = (char **) xrealloc |
ccc6cda3 JA |
1946 | (history_completion_array, harry_size * sizeof (char *)); |
1947 | } | |
726f6388 | 1948 | |
ccc6cda3 JA |
1949 | history_completion_array[harry_len++] = tokens[j]; |
1950 | history_completion_array[harry_len] = (char *)NULL; | |
1951 | } | |
1952 | free (tokens); | |
1953 | } | |
726f6388 | 1954 | |
ccc6cda3 JA |
1955 | /* Sort the complete list of tokens. */ |
1956 | qsort (history_completion_array, harry_len, sizeof (char *), (Function *)qsort_string_compare); | |
1957 | } | |
726f6388 JA |
1958 | } |
1959 | ||
1960 | static char * | |
1961 | history_completion_generator (hint_text, state) | |
1962 | char *hint_text; | |
1963 | int state; | |
1964 | { | |
ccc6cda3 JA |
1965 | static int local_index, len; |
1966 | static char *text; | |
726f6388 JA |
1967 | |
1968 | /* If this is the first call to the generator, then initialize the | |
1969 | list of strings to complete over. */ | |
ccc6cda3 | 1970 | if (state == 0) |
726f6388 JA |
1971 | { |
1972 | local_index = 0; | |
1973 | build_history_completion_array (); | |
1974 | text = hint_text; | |
1975 | len = strlen (text); | |
1976 | } | |
1977 | ||
1978 | while (history_completion_array && history_completion_array[local_index]) | |
1979 | { | |
1980 | if (strncmp (text, history_completion_array[local_index++], len) == 0) | |
1981 | return (savestring (history_completion_array[local_index - 1])); | |
1982 | } | |
1983 | return ((char *)NULL); | |
1984 | } | |
1985 | ||
28ef6c31 | 1986 | static int |
726f6388 JA |
1987 | dynamic_complete_history (count, key) |
1988 | int count, key; | |
1989 | { | |
28ef6c31 JA |
1990 | rl_compentry_func_t *orig_func; |
1991 | rl_completion_func_t *orig_attempt_func; | |
726f6388 JA |
1992 | |
1993 | orig_func = rl_completion_entry_function; | |
1994 | orig_attempt_func = rl_attempted_completion_function; | |
28ef6c31 JA |
1995 | rl_completion_entry_function = history_completion_generator; |
1996 | rl_attempted_completion_function = (rl_completion_func_t *)NULL; | |
726f6388 | 1997 | |
28ef6c31 | 1998 | if (rl_last_func == dynamic_complete_history) |
726f6388 JA |
1999 | rl_complete_internal ('?'); |
2000 | else | |
2001 | rl_complete_internal (TAB); | |
2002 | ||
2003 | rl_completion_entry_function = orig_func; | |
2004 | rl_attempted_completion_function = orig_attempt_func; | |
2005 | } | |
2006 | ||
726f6388 | 2007 | #if defined (SPECIFIC_COMPLETION_FUNCTIONS) |
28ef6c31 | 2008 | static int |
726f6388 JA |
2009 | bash_complete_username (ignore, ignore2) |
2010 | int ignore, ignore2; | |
2011 | { | |
28ef6c31 | 2012 | return bash_complete_username_internal (TAB); |
726f6388 JA |
2013 | } |
2014 | ||
28ef6c31 | 2015 | static int |
726f6388 JA |
2016 | bash_possible_username_completions (ignore, ignore2) |
2017 | int ignore, ignore2; | |
2018 | { | |
28ef6c31 | 2019 | return bash_complete_username_internal ('?'); |
726f6388 JA |
2020 | } |
2021 | ||
28ef6c31 | 2022 | static int |
726f6388 JA |
2023 | bash_complete_username_internal (what_to_do) |
2024 | int what_to_do; | |
2025 | { | |
28ef6c31 | 2026 | return bash_specific_completion (what_to_do, rl_username_completion_function); |
726f6388 JA |
2027 | } |
2028 | ||
28ef6c31 | 2029 | static int |
726f6388 JA |
2030 | bash_complete_filename (ignore, ignore2) |
2031 | int ignore, ignore2; | |
2032 | { | |
28ef6c31 | 2033 | return bash_complete_filename_internal (TAB); |
726f6388 JA |
2034 | } |
2035 | ||
28ef6c31 | 2036 | static int |
726f6388 JA |
2037 | bash_possible_filename_completions (ignore, ignore2) |
2038 | int ignore, ignore2; | |
2039 | { | |
28ef6c31 | 2040 | return bash_complete_filename_internal ('?'); |
726f6388 JA |
2041 | } |
2042 | ||
28ef6c31 | 2043 | static int |
726f6388 JA |
2044 | bash_complete_filename_internal (what_to_do) |
2045 | int what_to_do; | |
2046 | { | |
28ef6c31 JA |
2047 | rl_compentry_func_t *orig_func; |
2048 | rl_completion_func_t *orig_attempt_func; | |
2049 | rl_icppfunc_t *orig_dir_func; | |
2050 | const char *orig_rl_completer_word_break_characters; | |
2051 | int r; | |
726f6388 JA |
2052 | |
2053 | orig_func = rl_completion_entry_function; | |
2054 | orig_attempt_func = rl_attempted_completion_function; | |
2055 | orig_dir_func = rl_directory_completion_hook; | |
2056 | orig_rl_completer_word_break_characters = rl_completer_word_break_characters; | |
28ef6c31 JA |
2057 | rl_completion_entry_function = rl_filename_completion_function; |
2058 | rl_attempted_completion_function = (rl_completion_func_t *)NULL; | |
2059 | rl_directory_completion_hook = (rl_icppfunc_t *)NULL; | |
726f6388 JA |
2060 | rl_completer_word_break_characters = " \t\n\"\'"; |
2061 | ||
28ef6c31 | 2062 | r = rl_complete_internal (what_to_do); |
726f6388 JA |
2063 | |
2064 | rl_completion_entry_function = orig_func; | |
2065 | rl_attempted_completion_function = orig_attempt_func; | |
2066 | rl_directory_completion_hook = orig_dir_func; | |
2067 | rl_completer_word_break_characters = orig_rl_completer_word_break_characters; | |
28ef6c31 JA |
2068 | |
2069 | return r; | |
726f6388 JA |
2070 | } |
2071 | ||
28ef6c31 | 2072 | static int |
726f6388 JA |
2073 | bash_complete_hostname (ignore, ignore2) |
2074 | int ignore, ignore2; | |
2075 | { | |
28ef6c31 | 2076 | return bash_complete_hostname_internal (TAB); |
726f6388 JA |
2077 | } |
2078 | ||
28ef6c31 | 2079 | static int |
726f6388 JA |
2080 | bash_possible_hostname_completions (ignore, ignore2) |
2081 | int ignore, ignore2; | |
2082 | { | |
28ef6c31 | 2083 | return bash_complete_hostname_internal ('?'); |
726f6388 JA |
2084 | } |
2085 | ||
28ef6c31 | 2086 | static int |
726f6388 JA |
2087 | bash_complete_variable (ignore, ignore2) |
2088 | int ignore, ignore2; | |
2089 | { | |
28ef6c31 | 2090 | return bash_complete_variable_internal (TAB); |
726f6388 JA |
2091 | } |
2092 | ||
28ef6c31 | 2093 | static int |
726f6388 JA |
2094 | bash_possible_variable_completions (ignore, ignore2) |
2095 | int ignore, ignore2; | |
2096 | { | |
28ef6c31 | 2097 | return bash_complete_variable_internal ('?'); |
726f6388 JA |
2098 | } |
2099 | ||
28ef6c31 | 2100 | static int |
726f6388 JA |
2101 | bash_complete_command (ignore, ignore2) |
2102 | int ignore, ignore2; | |
2103 | { | |
28ef6c31 | 2104 | return bash_complete_command_internal (TAB); |
726f6388 JA |
2105 | } |
2106 | ||
28ef6c31 | 2107 | static int |
726f6388 JA |
2108 | bash_possible_command_completions (ignore, ignore2) |
2109 | int ignore, ignore2; | |
2110 | { | |
28ef6c31 | 2111 | return bash_complete_command_internal ('?'); |
726f6388 JA |
2112 | } |
2113 | ||
28ef6c31 | 2114 | static int |
726f6388 JA |
2115 | bash_complete_hostname_internal (what_to_do) |
2116 | int what_to_do; | |
2117 | { | |
28ef6c31 | 2118 | return bash_specific_completion (what_to_do, hostname_completion_function); |
726f6388 JA |
2119 | } |
2120 | ||
28ef6c31 | 2121 | static int |
726f6388 JA |
2122 | bash_complete_variable_internal (what_to_do) |
2123 | int what_to_do; | |
2124 | { | |
28ef6c31 | 2125 | return bash_specific_completion (what_to_do, variable_completion_function); |
726f6388 JA |
2126 | } |
2127 | ||
28ef6c31 | 2128 | static int |
726f6388 JA |
2129 | bash_complete_command_internal (what_to_do) |
2130 | int what_to_do; | |
2131 | { | |
28ef6c31 | 2132 | return bash_specific_completion (what_to_do, command_word_completion_function); |
726f6388 JA |
2133 | } |
2134 | ||
ccc6cda3 JA |
2135 | static char * |
2136 | glob_complete_word (text, state) | |
28ef6c31 | 2137 | const char *text; |
ccc6cda3 JA |
2138 | int state; |
2139 | { | |
2140 | static char **matches = (char **)NULL; | |
2141 | static int ind; | |
2142 | char *ret; | |
2143 | ||
2144 | if (state == 0) | |
2145 | { | |
e8ce775d | 2146 | rl_filename_completion_desired = 1; |
ccc6cda3 | 2147 | if (matches) |
28ef6c31 | 2148 | free (matches); |
ccc6cda3 JA |
2149 | matches = shell_glob_filename (text); |
2150 | if (GLOB_FAILED (matches)) | |
28ef6c31 | 2151 | matches = (char **)NULL; |
ccc6cda3 JA |
2152 | ind = 0; |
2153 | } | |
2154 | ||
2155 | ret = matches ? matches[ind] : (char *)NULL; | |
2156 | ind++; | |
2157 | return ret; | |
2158 | } | |
2159 | ||
28ef6c31 | 2160 | static int |
ccc6cda3 JA |
2161 | bash_glob_completion_internal (what_to_do) |
2162 | int what_to_do; | |
2163 | { | |
28ef6c31 | 2164 | return bash_specific_completion (what_to_do, glob_complete_word); |
ccc6cda3 JA |
2165 | } |
2166 | ||
28ef6c31 | 2167 | static int |
ccc6cda3 JA |
2168 | bash_glob_expand_word (count, key) |
2169 | int count, key; | |
2170 | { | |
28ef6c31 | 2171 | return bash_glob_completion_internal ('*'); |
ccc6cda3 JA |
2172 | } |
2173 | ||
28ef6c31 | 2174 | static int |
ccc6cda3 JA |
2175 | bash_glob_list_expansions (count, key) |
2176 | int count, key; | |
2177 | { | |
28ef6c31 | 2178 | return bash_glob_completion_internal ('?'); |
ccc6cda3 JA |
2179 | } |
2180 | ||
28ef6c31 | 2181 | static int |
726f6388 JA |
2182 | bash_specific_completion (what_to_do, generator) |
2183 | int what_to_do; | |
28ef6c31 | 2184 | rl_compentry_func_t *generator; |
726f6388 | 2185 | { |
28ef6c31 JA |
2186 | rl_compentry_func_t *orig_func; |
2187 | rl_completion_func_t *orig_attempt_func; | |
2188 | int r; | |
726f6388 JA |
2189 | |
2190 | orig_func = rl_completion_entry_function; | |
2191 | orig_attempt_func = rl_attempted_completion_function; | |
2192 | rl_completion_entry_function = generator; | |
28ef6c31 | 2193 | rl_attempted_completion_function = NULL; |
726f6388 | 2194 | |
28ef6c31 | 2195 | r = rl_complete_internal (what_to_do); |
726f6388 JA |
2196 | |
2197 | rl_completion_entry_function = orig_func; | |
2198 | rl_attempted_completion_function = orig_attempt_func; | |
28ef6c31 JA |
2199 | |
2200 | return r; | |
726f6388 JA |
2201 | } |
2202 | ||
2203 | #endif /* SPECIFIC_COMPLETION_FUNCTIONS */ | |
ccc6cda3 JA |
2204 | |
2205 | /* Filename quoting for completion. */ | |
bb70624e JA |
2206 | /* A function to strip unquoted quote characters (single quotes, double |
2207 | quotes, and backslashes). It allows single quotes to appear | |
2208 | within double quotes, and vice versa. It should be smarter. */ | |
ccc6cda3 JA |
2209 | static char * |
2210 | bash_dequote_filename (text, quote_char) | |
2211 | char *text; | |
28ef6c31 | 2212 | int quote_char; |
ccc6cda3 JA |
2213 | { |
2214 | char *ret, *p, *r; | |
2215 | int l, quoted; | |
2216 | ||
2217 | l = strlen (text); | |
2218 | ret = xmalloc (l + 1); | |
2219 | for (quoted = quote_char, p = text, r = ret; p && *p; p++) | |
2220 | { | |
2221 | /* Allow backslash-quoted characters to pass through unscathed. */ | |
2222 | if (*p == '\\') | |
2223 | { | |
2224 | *r++ = *++p; | |
2225 | if (*p == '\0') | |
2226 | break; | |
2227 | continue; | |
2228 | } | |
2229 | /* Close quote. */ | |
2230 | if (quoted && *p == quoted) | |
28ef6c31 JA |
2231 | { |
2232 | quoted = 0; | |
2233 | continue; | |
2234 | } | |
ccc6cda3 JA |
2235 | /* Open quote. */ |
2236 | if (quoted == 0 && (*p == '\'' || *p == '"')) | |
28ef6c31 JA |
2237 | { |
2238 | quoted = *p; | |
2239 | continue; | |
2240 | } | |
ccc6cda3 JA |
2241 | *r++ = *p; |
2242 | } | |
2243 | *r = '\0'; | |
2244 | return ret; | |
2245 | } | |
2246 | ||
d166f048 JA |
2247 | /* Quote characters that the readline completion code would treat as |
2248 | word break characters with backslashes. Pass backslash-quoted | |
2249 | characters through without examination. */ | |
2250 | static char * | |
2251 | quote_word_break_chars (text) | |
2252 | char *text; | |
2253 | { | |
2254 | char *ret, *r, *s; | |
2255 | int l; | |
2256 | ||
2257 | l = strlen (text); | |
2258 | ret = xmalloc ((2 * l) + 1); | |
2259 | for (s = text, r = ret; *s; s++) | |
2260 | { | |
2261 | /* Pass backslash-quoted characters through, including the backslash. */ | |
2262 | if (*s == '\\') | |
2263 | { | |
2264 | *r++ = '\\'; | |
2265 | *r++ = *++s; | |
2266 | if (*s == '\0') | |
2267 | break; | |
2268 | continue; | |
2269 | } | |
2270 | /* OK, we have an unquoted character. Check its presence in | |
2271 | rl_completer_word_break_characters. */ | |
2272 | if (strchr (rl_completer_word_break_characters, *s)) | |
28ef6c31 | 2273 | *r++ = '\\'; |
d166f048 JA |
2274 | *r++ = *s; |
2275 | } | |
2276 | *r = '\0'; | |
2277 | return ret; | |
2278 | } | |
2279 | ||
2280 | /* Quote a filename using double quotes, single quotes, or backslashes | |
2281 | depending on the value of completion_quoting_style. If we're | |
2282 | completing using backslashes, we need to quote some additional | |
2283 | characters (those that readline treats as word breaks), so we call | |
2284 | quote_word_break_chars on the result. */ | |
ccc6cda3 JA |
2285 | static char * |
2286 | bash_quote_filename (s, rtype, qcp) | |
2287 | char *s; | |
2288 | int rtype; | |
2289 | char *qcp; | |
2290 | { | |
2291 | char *rtext, *mtext, *ret; | |
2292 | int rlen, cs; | |
2293 | ||
2294 | rtext = (char *)NULL; | |
2295 | ||
2296 | /* If RTYPE == MULT_MATCH, it means that there is | |
2297 | more than one match. In this case, we do not add | |
2298 | the closing quote or attempt to perform tilde | |
2299 | expansion. If RTYPE == SINGLE_MATCH, we try | |
2300 | to perform tilde expansion, because single and double | |
2301 | quotes inhibit tilde expansion by the shell. */ | |
2302 | ||
2303 | mtext = s; | |
2304 | if (mtext[0] == '~' && rtype == SINGLE_MATCH) | |
2305 | mtext = bash_tilde_expand (s); | |
2306 | ||
2307 | cs = completion_quoting_style; | |
2308 | /* Might need to modify the default completion style based on *qcp, | |
bb70624e JA |
2309 | since it's set to any user-provided opening quote. We also change |
2310 | to single-quoting if there is no user-provided opening quote and | |
2311 | the word being completed contains newlines, since those are not | |
2312 | quoted correctly using backslashes (a backslash-newline pair is | |
2313 | special to the shell parser). */ | |
2314 | if (*qcp == '\0' && cs == COMPLETE_BSQUOTE && strchr (mtext, '\n')) | |
2315 | cs = COMPLETE_SQUOTE; | |
2316 | else if (*qcp == '"') | |
ccc6cda3 JA |
2317 | cs = COMPLETE_DQUOTE; |
2318 | else if (*qcp == '\'') | |
2319 | cs = COMPLETE_SQUOTE; | |
2320 | #if defined (BANG_HISTORY) | |
2321 | else if (*qcp == '\0' && history_expansion && cs == COMPLETE_DQUOTE && | |
2322 | history_expansion_inhibited == 0 && strchr (mtext, '!')) | |
2323 | cs = COMPLETE_BSQUOTE; | |
d166f048 JA |
2324 | |
2325 | if (*qcp == '"' && history_expansion && cs == COMPLETE_DQUOTE && | |
28ef6c31 | 2326 | history_expansion_inhibited == 0 && strchr (mtext, '!')) |
d166f048 JA |
2327 | { |
2328 | cs = COMPLETE_BSQUOTE; | |
2329 | *qcp = '\0'; | |
2330 | } | |
ccc6cda3 JA |
2331 | #endif |
2332 | ||
2333 | switch (cs) | |
2334 | { | |
2335 | case COMPLETE_DQUOTE: | |
28ef6c31 | 2336 | rtext = sh_double_quote (mtext); |
ccc6cda3 JA |
2337 | break; |
2338 | case COMPLETE_SQUOTE: | |
28ef6c31 | 2339 | rtext = sh_single_quote (mtext); |
ccc6cda3 JA |
2340 | break; |
2341 | case COMPLETE_BSQUOTE: | |
28ef6c31 | 2342 | rtext = sh_backslash_quote (mtext); |
ccc6cda3 JA |
2343 | break; |
2344 | } | |
2345 | ||
2346 | if (mtext != s) | |
2347 | free (mtext); | |
2348 | ||
d166f048 JA |
2349 | /* We may need to quote additional characters: those that readline treats |
2350 | as word breaks that are not quoted by backslash_quote. */ | |
2351 | if (rtext && cs == COMPLETE_BSQUOTE) | |
2352 | { | |
2353 | mtext = quote_word_break_chars (rtext); | |
2354 | free (rtext); | |
2355 | rtext = mtext; | |
2356 | } | |
2357 | ||
ccc6cda3 JA |
2358 | /* Leave the opening quote intact. The readline completion code takes |
2359 | care of avoiding doubled opening quotes. */ | |
2360 | rlen = strlen (rtext); | |
2361 | ret = xmalloc (rlen + 1); | |
2362 | strcpy (ret, rtext); | |
2363 | ||
2364 | /* If there are multiple matches, cut off the closing quote. */ | |
2365 | if (rtype == MULT_MATCH && cs != COMPLETE_BSQUOTE) | |
2366 | ret[rlen - 1] = '\0'; | |
2367 | free (rtext); | |
2368 | return ret; | |
2369 | } | |
2370 | ||
bb70624e JA |
2371 | /* Support for binding readline key sequences to Unix commands. */ |
2372 | static Keymap cmd_xmap; | |
2373 | ||
2374 | static int | |
2375 | bash_execute_unix_command (count, key) | |
2376 | int count; /* ignored */ | |
2377 | int key; | |
2378 | { | |
2379 | Keymap ckmap; /* current keymap */ | |
2380 | Keymap xkmap; /* unix command executing keymap */ | |
2381 | register int i; | |
2382 | char *cmd; | |
2383 | ||
2384 | /* First, we need to find the right command to execute. This is tricky, | |
2385 | because we might have already indirected into another keymap. */ | |
2386 | ckmap = rl_get_keymap (); | |
2387 | if (ckmap != rl_executing_keymap) | |
2388 | { | |
2389 | /* bogus. we have to search. only handle one level of indirection. */ | |
2390 | for (i = 0; i < KEYMAP_SIZE; i++) | |
2391 | { | |
2392 | if (ckmap[i].type == ISKMAP && (Keymap)ckmap[i].function == rl_executing_keymap) | |
2393 | break; | |
2394 | } | |
2395 | if (i < KEYMAP_SIZE) | |
28ef6c31 | 2396 | xkmap = (Keymap)cmd_xmap[i].function; |
bb70624e JA |
2397 | else |
2398 | { | |
28ef6c31 JA |
2399 | rl_crlf (); |
2400 | internal_error ("bash_execute_unix_command: cannot find keymap for command"); | |
2401 | rl_forced_update_display (); | |
2402 | return 1; | |
bb70624e JA |
2403 | } |
2404 | } | |
2405 | else | |
2406 | xkmap = cmd_xmap; | |
2407 | ||
2408 | cmd = (char *)xkmap[key].function; | |
2409 | ||
2410 | if (cmd == 0) | |
2411 | { | |
28ef6c31 | 2412 | rl_ding (); |
bb70624e JA |
2413 | return 1; |
2414 | } | |
2415 | ||
28ef6c31 | 2416 | rl_crlf (); /* move to a new line */ |
bb70624e JA |
2417 | |
2418 | cmd = savestring (cmd); | |
2419 | parse_and_execute (cmd, "bash_execute_unix_command", 0); | |
2420 | ||
2421 | /* and restore the readline buffer and display after command execution. */ | |
2422 | rl_forced_update_display (); | |
2423 | return 0; | |
2424 | } | |
2425 | ||
2426 | static void | |
2427 | init_unix_command_map () | |
2428 | { | |
2429 | cmd_xmap = rl_make_bare_keymap (); | |
2430 | } | |
2431 | ||
2432 | static int | |
2433 | isolate_sequence (string, ind, need_dquote, startp) | |
2434 | char *string; | |
2435 | int ind, need_dquote, *startp; | |
2436 | { | |
2437 | register int i; | |
2438 | int c, passc, delim; | |
2439 | ||
2440 | for (i = ind; string[i] && whitespace (string[i]); i++) | |
2441 | ; | |
2442 | /* NEED_DQUOTE means that the first non-white character *must* be `"'. */ | |
2443 | if (need_dquote && string[i] != '"') | |
2444 | { | |
2445 | builtin_error ("%s: first non-whitespace character is not `\"'", string); | |
2446 | return -1; | |
2447 | } | |
2448 | ||
2449 | /* We can have delimited strings even if NEED_DQUOTE == 0, like the command | |
2450 | string to bind the key sequence to. */ | |
2451 | delim = (string[i] == '"' || string[i] == '\'') ? string[i] : 0; | |
2452 | ||
2453 | if (startp) | |
2454 | *startp = delim ? ++i : i; | |
2455 | ||
2456 | for (passc = 0; c = string[i]; i++) | |
2457 | { | |
2458 | if (passc) | |
2459 | { | |
2460 | passc = 0; | |
2461 | continue; | |
2462 | } | |
2463 | if (c == '\\') | |
2464 | { | |
2465 | passc++; | |
2466 | continue; | |
2467 | } | |
2468 | if (c == delim) | |
28ef6c31 | 2469 | break; |
bb70624e JA |
2470 | } |
2471 | ||
2472 | if (delim && string[i] != delim) | |
2473 | { | |
2474 | builtin_error ("%s: no closing `%c'", string, delim); | |
2475 | return -1; | |
2476 | } | |
2477 | ||
2478 | return i; | |
2479 | } | |
2480 | ||
2481 | int | |
2482 | bind_keyseq_to_unix_command (line) | |
2483 | char *line; | |
2484 | { | |
2485 | Keymap kmap; | |
2486 | char *kseq, *value; | |
2487 | int i, kstart, len, ok; | |
2488 | ||
2489 | if (cmd_xmap == 0) | |
2490 | init_unix_command_map (); | |
2491 | ||
2492 | kmap = rl_get_keymap (); | |
2493 | ||
2494 | /* We duplicate some of the work done by rl_parse_and_bind here, but | |
2495 | this code only has to handle `"keyseq": ["]command["]' and can | |
2496 | generate an error for anything else. */ | |
2497 | i = isolate_sequence (line, 0, 1, &kstart); | |
2498 | if (i < 0) | |
2499 | return -1; | |
2500 | ||
2501 | /* Create the key sequence string to pass to rl_generic_bind */ | |
2502 | kseq = substring (line, kstart, i); | |
2503 | ||
2504 | for ( ; line[i] && line[i] != ':'; i++) | |
2505 | ; | |
2506 | if (line[i] != ':') | |
2507 | { | |
2508 | builtin_error ("%s: missing colon separator", line); | |
2509 | return -1; | |
2510 | } | |
2511 | ||
2512 | i = isolate_sequence (line, i + 1, 0, &kstart); | |
2513 | if (i < 0) | |
2514 | return -1; | |
2515 | ||
2516 | /* Create the value string containing the command to execute. */ | |
2517 | value = substring (line, kstart, i); | |
2518 | ||
2519 | /* Save the command to execute and the key sequence in the CMD_XMAP */ | |
2520 | rl_generic_bind (ISMACR, kseq, value, cmd_xmap); | |
2521 | ||
2522 | /* and bind the key sequence in the current keymap to a function that | |
2523 | understands how to execute from CMD_XMAP */ | |
28ef6c31 | 2524 | rl_set_key (kseq, bash_execute_unix_command, kmap); |
bb70624e JA |
2525 | |
2526 | return 0; | |
2527 | } | |
2528 | ||
2529 | /* Used by the programmable completion code. Complete TEXT as a filename, | |
2530 | but return only directories as matches. Dequotes the filename before | |
2531 | attempting to find matches. */ | |
2532 | char ** | |
2533 | bash_directory_completion_matches (text) | |
28ef6c31 | 2534 | const char *text; |
bb70624e JA |
2535 | { |
2536 | char **m1; | |
2537 | char *dfn; | |
2538 | int qc; | |
2539 | ||
2540 | qc = (text[0] == '"' || text[0] == '\'') ? text[0] : 0; | |
28ef6c31 JA |
2541 | dfn = bash_dequote_filename ((char *)text, qc); |
2542 | m1 = rl_completion_matches (dfn, rl_filename_completion_function); | |
bb70624e JA |
2543 | free (dfn); |
2544 | ||
2545 | if (m1 == 0 || m1[0] == 0) | |
2546 | return m1; | |
2547 | /* We don't bother recomputing the lcd of the matches, because it will just | |
2548 | get thrown away by the programmable completion code and recomputed | |
2549 | later. */ | |
2550 | (void)bash_ignore_filenames (m1); | |
2551 | return m1; | |
2552 | } | |
ccc6cda3 | 2553 | #endif /* READLINE */ |