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Commit | Line | Data |
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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 | |
9 | the Free Software Foundation; either version 1, or (at your option) | |
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 | |
19 | Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
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 | ||
726f6388 JA |
52 | #if defined (BRACE_COMPLETION) |
53 | extern void bash_brace_completion (); | |
54 | #endif /* BRACE_COMPLETION */ | |
55 | ||
56 | /* Functions bound to keys in Readline for Bash users. */ | |
57 | static void shell_expand_line (); | |
58 | static void display_shell_version (), operate_and_get_next (); | |
cce855bc JA |
59 | static void bash_ignore_filenames (); |
60 | static void cleanup_expansion_error (), set_up_new_line (); | |
61 | ||
62 | #if defined (BANG_HISTORY) | |
63 | static int history_expand_line (); | |
64 | static int tcsh_magic_space (); | |
65 | #endif /* BANG_HISTORY */ | |
d166f048 | 66 | #ifdef ALIAS |
cce855bc JA |
67 | static int alias_expand_line (); |
68 | #endif | |
69 | #if defined (BANG_HISTORY) && defined (ALIAS) | |
70 | static int history_and_alias_expand_line (); | |
d166f048 | 71 | #endif |
726f6388 JA |
72 | |
73 | /* Helper functions for Readline. */ | |
74 | static int bash_directory_completion_hook (); | |
75 | static void filename_completion_ignore (); | |
76 | static void bash_push_line (); | |
77 | ||
78 | static char **attempt_shell_completion (); | |
79 | static char *variable_completion_function (); | |
80 | static char *hostname_completion_function (); | |
81 | static char *command_word_completion_function (); | |
82 | static char *command_subst_completion_function (); | |
ccc6cda3 JA |
83 | static void dynamic_complete_history (); |
84 | ||
85 | static char *glob_complete_word (); | |
86 | static void bash_glob_expand_word (); | |
87 | static void bash_glob_list_expansions (); | |
726f6388 JA |
88 | |
89 | static void snarf_hosts_from_file (), add_host_name (); | |
726f6388 | 90 | |
ccc6cda3 JA |
91 | static char *bash_dequote_filename (); |
92 | static char *bash_quote_filename (); | |
93 | ||
94 | #if defined (ALIAS) | |
95 | static int posix_edit_macros (); | |
96 | #endif | |
726f6388 JA |
97 | |
98 | /* Variables used here but defined in other files. */ | |
99 | extern int posixly_correct, no_symbolic_links; | |
100 | extern int rl_explicit_arg; | |
101 | extern char *current_prompt_string, *ps1_prompt; | |
102 | extern STRING_INT_ALIST word_token_alist[]; | |
103 | extern Function *rl_last_func; | |
104 | extern int rl_filename_completion_desired; | |
105 | ||
ccc6cda3 JA |
106 | /* Helper functions from subst.c */ |
107 | extern int char_is_quoted (); | |
108 | extern int unclosed_pair (); | |
109 | ||
726f6388 JA |
110 | /* SPECIFIC_COMPLETION_FUNCTIONS specifies that we have individual |
111 | completion functions which indicate what type of completion should be | |
112 | done (at or before point) that can be bound to key sequences with | |
113 | the readline library. */ | |
114 | #define SPECIFIC_COMPLETION_FUNCTIONS | |
115 | ||
116 | #if defined (SPECIFIC_COMPLETION_FUNCTIONS) | |
ccc6cda3 JA |
117 | static void bash_specific_completion (); |
118 | static void bash_complete_filename (), bash_possible_filename_completions (); | |
119 | static void bash_complete_filename_internal (); | |
120 | static void bash_complete_username (), bash_possible_username_completions (); | |
121 | static void bash_complete_username_internal (); | |
122 | static void bash_complete_hostname (), bash_possible_hostname_completions (); | |
123 | static void bash_complete_hostname_internal (); | |
124 | static void bash_complete_variable (), bash_possible_variable_completions (); | |
125 | static void bash_complete_variable_internal (); | |
126 | static void bash_complete_command (), bash_possible_command_completions (); | |
127 | static void bash_complete_command_internal (); | |
726f6388 JA |
128 | #endif /* SPECIFIC_COMPLETION_FUNCTIONS */ |
129 | ||
726f6388 JA |
130 | #if defined (VI_MODE) |
131 | static void vi_edit_and_execute_command (); | |
726f6388 JA |
132 | #endif |
133 | ||
ccc6cda3 JA |
134 | /* Non-zero once initalize_readline () has been called. */ |
135 | int bash_readline_initialized = 0; | |
136 | ||
137 | /* If non-zero, we do hostname completion, breaking words at `@' and | |
138 | trying to complete the stuff after the `@' from our own internal | |
139 | host list. */ | |
140 | int perform_hostname_completion = 1; | |
141 | ||
142 | static char *bash_completer_word_break_characters = " \t\n\"'@><=;|&(:"; | |
143 | static char *bash_nohostname_word_break_characters = " \t\n\"'><=;|&(:"; | |
144 | ||
726f6388 JA |
145 | static Function *old_rl_startup_hook = (Function *) NULL; |
146 | ||
ccc6cda3 JA |
147 | /* What kind of quoting is performed by bash_quote_filename: |
148 | COMPLETE_DQUOTE = double-quoting the filename | |
149 | COMPLETE_SQUOTE = single_quoting the filename | |
150 | COMPLETE_BSQUOTE = backslash-quoting special chars in the filename | |
151 | */ | |
152 | #define COMPLETE_DQUOTE 1 | |
153 | #define COMPLETE_SQUOTE 2 | |
154 | #define COMPLETE_BSQUOTE 3 | |
155 | static int completion_quoting_style = COMPLETE_BSQUOTE; | |
156 | ||
726f6388 JA |
157 | /* Change the readline VI-mode keymaps into or out of Posix.2 compliance. |
158 | Called when the shell is put into or out of `posix' mode. */ | |
159 | void | |
160 | posix_readline_initialize (on_or_off) | |
161 | int on_or_off; | |
162 | { | |
ccc6cda3 JA |
163 | if (on_or_off) |
164 | rl_variable_bind ("comment-begin", "#"); | |
726f6388 | 165 | #if defined (VI_MODE) |
ccc6cda3 JA |
166 | rl_bind_key_in_map (CTRL('I'), on_or_off ? rl_insert : rl_complete, vi_insertion_keymap); |
167 | #endif | |
168 | } | |
169 | ||
170 | void | |
171 | enable_hostname_completion (on_or_off) | |
172 | int on_or_off; | |
173 | { | |
726f6388 JA |
174 | if (on_or_off) |
175 | { | |
ccc6cda3 JA |
176 | perform_hostname_completion = 1; |
177 | rl_special_prefixes = "$@"; | |
178 | rl_completer_word_break_characters = bash_completer_word_break_characters; | |
726f6388 JA |
179 | } |
180 | else | |
ccc6cda3 JA |
181 | { |
182 | perform_hostname_completion = 0; | |
183 | rl_special_prefixes = "$"; | |
184 | rl_completer_word_break_characters = bash_nohostname_word_break_characters; | |
185 | } | |
186 | } | |
726f6388 JA |
187 | |
188 | /* Called once from parse.y if we are going to use readline. */ | |
189 | void | |
190 | initialize_readline () | |
191 | { | |
192 | if (bash_readline_initialized) | |
193 | return; | |
194 | ||
195 | rl_terminal_name = get_string_value ("TERM"); | |
196 | rl_instream = stdin; | |
197 | rl_outstream = stderr; | |
726f6388 JA |
198 | |
199 | /* Allow conditional parsing of the ~/.inputrc file. */ | |
200 | rl_readline_name = "Bash"; | |
201 | ||
202 | /* Bind up our special shell functions. */ | |
203 | rl_add_defun ("shell-expand-line", (Function *)shell_expand_line, -1); | |
ccc6cda3 | 204 | rl_bind_key_in_map (CTRL('E'), (Function *)shell_expand_line, emacs_meta_keymap); |
726f6388 JA |
205 | |
206 | /* Bind up our special shell functions. */ | |
cce855bc | 207 | #ifdef BANG_HISTORY |
726f6388 JA |
208 | rl_add_defun ("history-expand-line", (Function *)history_expand_line, -1); |
209 | rl_bind_key_in_map ('^', (Function *)history_expand_line, emacs_meta_keymap); | |
210 | ||
cce855bc JA |
211 | rl_add_defun ("magic-space", (Function *)tcsh_magic_space, -1); |
212 | #endif | |
213 | ||
d166f048 JA |
214 | #ifdef ALIAS |
215 | rl_add_defun ("alias-expand-line", (Function *)alias_expand_line, -1); | |
bc4cd23c | 216 | # ifdef BANG_HISTORY |
d166f048 | 217 | rl_add_defun ("history-and-alias-expand-line", (Function *)history_and_alias_expand_line, -1); |
bc4cd23c | 218 | # endif |
d166f048 JA |
219 | #endif |
220 | ||
726f6388 JA |
221 | /* Backwards compatibility. */ |
222 | rl_add_defun ("insert-last-argument", rl_yank_last_arg, -1); | |
223 | ||
224 | rl_add_defun | |
225 | ("operate-and-get-next", (Function *)operate_and_get_next, CTRL('O')); | |
226 | ||
227 | rl_add_defun | |
228 | ("display-shell-version", (Function *)display_shell_version, -1); | |
726f6388 JA |
229 | rl_bind_key_in_map |
230 | (CTRL ('V'), (Function *)display_shell_version, emacs_ctlx_keymap); | |
231 | ||
232 | /* In Bash, the user can switch editing modes with "set -o [vi emacs]", | |
233 | so it is not necessary to allow C-M-j for context switching. Turn | |
234 | off this occasionally confusing behaviour. */ | |
235 | rl_unbind_key_in_map (CTRL('J'), emacs_meta_keymap); | |
236 | rl_unbind_key_in_map (CTRL('M'), emacs_meta_keymap); | |
237 | #if defined (VI_MODE) | |
238 | rl_unbind_key_in_map (CTRL('E'), vi_movement_keymap); | |
239 | #endif | |
ccc6cda3 | 240 | |
726f6388 JA |
241 | #if defined (BRACE_COMPLETION) |
242 | rl_add_defun ("complete-into-braces", bash_brace_completion, -1); | |
243 | rl_bind_key_in_map ('{', bash_brace_completion, emacs_meta_keymap); | |
244 | #endif /* BRACE_COMPLETION */ | |
245 | ||
246 | #if defined (SPECIFIC_COMPLETION_FUNCTIONS) | |
247 | rl_add_defun ("complete-filename", bash_complete_filename, -1); | |
248 | rl_bind_key_in_map ('/', bash_complete_filename, emacs_meta_keymap); | |
249 | rl_add_defun ("possible-filename-completions", | |
250 | bash_possible_filename_completions, -1); | |
ccc6cda3 | 251 | rl_bind_key_in_map ('/', bash_possible_filename_completions, emacs_ctlx_keymap); |
726f6388 JA |
252 | |
253 | rl_add_defun ("complete-username", bash_complete_username, -1); | |
254 | rl_bind_key_in_map ('~', bash_complete_username, emacs_meta_keymap); | |
255 | rl_add_defun ("possible-username-completions", | |
256 | bash_possible_username_completions, -1); | |
ccc6cda3 | 257 | rl_bind_key_in_map ('~', bash_possible_username_completions, emacs_ctlx_keymap); |
726f6388 JA |
258 | |
259 | rl_add_defun ("complete-hostname", bash_complete_hostname, -1); | |
260 | rl_bind_key_in_map ('@', bash_complete_hostname, emacs_meta_keymap); | |
261 | rl_add_defun ("possible-hostname-completions", | |
262 | bash_possible_hostname_completions, -1); | |
ccc6cda3 | 263 | rl_bind_key_in_map ('@', bash_possible_hostname_completions, emacs_ctlx_keymap); |
726f6388 JA |
264 | |
265 | rl_add_defun ("complete-variable", bash_complete_variable, -1); | |
266 | rl_bind_key_in_map ('$', bash_complete_variable, emacs_meta_keymap); | |
267 | rl_add_defun ("possible-variable-completions", | |
268 | bash_possible_variable_completions, -1); | |
ccc6cda3 | 269 | rl_bind_key_in_map ('$', bash_possible_variable_completions, emacs_ctlx_keymap); |
726f6388 JA |
270 | |
271 | rl_add_defun ("complete-command", bash_complete_command, -1); | |
272 | rl_bind_key_in_map ('!', bash_complete_command, emacs_meta_keymap); | |
273 | rl_add_defun ("possible-command-completions", | |
274 | bash_possible_command_completions, -1); | |
ccc6cda3 JA |
275 | rl_bind_key_in_map ('!', bash_possible_command_completions, emacs_ctlx_keymap); |
276 | ||
277 | rl_add_defun ("glob-expand-word", bash_glob_expand_word, -1); | |
278 | rl_add_defun ("glob-list-expansions", bash_glob_list_expansions, -1); | |
279 | rl_bind_key_in_map ('*', bash_glob_expand_word, emacs_ctlx_keymap); | |
280 | rl_bind_key_in_map ('g', bash_glob_list_expansions, emacs_ctlx_keymap); | |
726f6388 JA |
281 | |
282 | #endif /* SPECIFIC_COMPLETION_FUNCTIONS */ | |
283 | ||
726f6388 JA |
284 | rl_add_defun ("dynamic-complete-history", dynamic_complete_history, -1); |
285 | rl_bind_key_in_map (TAB, dynamic_complete_history, emacs_meta_keymap); | |
726f6388 JA |
286 | |
287 | /* Tell the completer that we want a crack first. */ | |
288 | rl_attempted_completion_function = (CPPFunction *)attempt_shell_completion; | |
289 | ||
290 | /* Tell the completer that we might want to follow symbolic links or | |
291 | do other expansion on directory names. */ | |
292 | rl_directory_completion_hook = bash_directory_completion_hook; | |
293 | ||
294 | /* Tell the filename completer we want a chance to ignore some names. */ | |
295 | rl_ignore_some_completions_function = (Function *)filename_completion_ignore; | |
296 | ||
297 | #if defined (VI_MODE) | |
298 | rl_bind_key_in_map ('v', vi_edit_and_execute_command, vi_movement_keymap); | |
ccc6cda3 JA |
299 | # if defined (ALIAS) |
300 | rl_bind_key_in_map ('@', posix_edit_macros, vi_movement_keymap); | |
301 | # endif | |
726f6388 JA |
302 | #endif |
303 | ||
304 | rl_completer_quote_characters = "'\""; | |
ccc6cda3 JA |
305 | |
306 | /* This sets rl_completer_word_break_characters and rl_special_prefixes | |
307 | to the appropriate values, depending on whether or not hostname | |
308 | completion is enabled. */ | |
309 | enable_hostname_completion (perform_hostname_completion); | |
310 | ||
311 | /* characters that need to be quoted when appearing in filenames. */ | |
d166f048 | 312 | rl_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:"; |
ccc6cda3 JA |
313 | rl_filename_quoting_function = bash_quote_filename; |
314 | rl_filename_dequoting_function = bash_dequote_filename; | |
315 | rl_char_is_quoted_p = char_is_quoted; | |
726f6388 JA |
316 | |
317 | if (posixly_correct) | |
318 | posix_readline_initialize (1); | |
319 | ||
320 | bash_readline_initialized = 1; | |
321 | } | |
322 | ||
323 | /* On Sun systems at least, rl_attempted_completion_function can end up | |
324 | getting set to NULL, and rl_completion_entry_function set to do command | |
325 | word completion if Bash is interrupted while trying to complete a command | |
326 | word. This just resets all the completion functions to the right thing. | |
327 | It's called from throw_to_top_level(). */ | |
328 | void | |
329 | bashline_reinitialize () | |
330 | { | |
331 | tilde_initialize (); | |
332 | rl_attempted_completion_function = attempt_shell_completion; | |
333 | rl_completion_entry_function = (Function *)NULL; | |
334 | rl_directory_completion_hook = bash_directory_completion_hook; | |
335 | rl_ignore_some_completions_function = (Function *)filename_completion_ignore; | |
336 | } | |
337 | ||
338 | /* Contains the line to push into readline. */ | |
339 | static char *push_to_readline = (char *)NULL; | |
340 | ||
341 | /* Push the contents of push_to_readline into the | |
342 | readline buffer. */ | |
343 | static void | |
344 | bash_push_line () | |
345 | { | |
346 | if (push_to_readline) | |
347 | { | |
348 | rl_insert_text (push_to_readline); | |
349 | free (push_to_readline); | |
350 | push_to_readline = (char *)NULL; | |
351 | rl_startup_hook = old_rl_startup_hook; | |
352 | } | |
353 | } | |
354 | ||
355 | /* Call this to set the initial text for the next line to read | |
356 | from readline. */ | |
357 | int | |
358 | bash_re_edit (line) | |
359 | char *line; | |
360 | { | |
ccc6cda3 | 361 | FREE (push_to_readline); |
726f6388 JA |
362 | |
363 | push_to_readline = savestring (line); | |
364 | old_rl_startup_hook = rl_startup_hook; | |
365 | rl_startup_hook = (Function *)bash_push_line; | |
366 | ||
367 | return (0); | |
368 | } | |
369 | ||
370 | static void | |
371 | display_shell_version (count, c) | |
372 | int count, c; | |
373 | { | |
374 | crlf (); | |
ccc6cda3 | 375 | show_shell_version (0); |
726f6388 JA |
376 | putc ('\r', rl_outstream); |
377 | fflush (rl_outstream); | |
378 | rl_on_new_line (); | |
379 | rl_redisplay (); | |
380 | } | |
381 | ||
382 | /* **************************************************************** */ | |
383 | /* */ | |
384 | /* Readline Stuff */ | |
385 | /* */ | |
386 | /* **************************************************************** */ | |
387 | ||
388 | /* If the user requests hostname completion, then simply build a list | |
389 | of hosts, and complete from that forever more. */ | |
726f6388 JA |
390 | |
391 | /* The kept list of hostnames. */ | |
392 | static char **hostname_list = (char **)NULL; | |
393 | ||
394 | /* The physical size of the above list. */ | |
ccc6cda3 | 395 | static int hostname_list_size; |
726f6388 | 396 | |
ccc6cda3 JA |
397 | /* The number of hostnames in the above list. */ |
398 | static int hostname_list_length; | |
726f6388 JA |
399 | |
400 | /* Whether or not HOSTNAME_LIST has been initialized. */ | |
401 | int hostname_list_initialized = 0; | |
402 | ||
726f6388 JA |
403 | /* Initialize the hostname completion table. */ |
404 | static void | |
405 | initialize_hostname_list () | |
406 | { | |
407 | char *temp; | |
408 | ||
409 | temp = get_string_value ("HOSTFILE"); | |
ccc6cda3 | 410 | if (temp == 0) |
726f6388 | 411 | temp = get_string_value ("hostname_completion_file"); |
ccc6cda3 JA |
412 | if (temp == 0) |
413 | temp = DEFAULT_HOSTS_FILE; | |
726f6388 JA |
414 | |
415 | snarf_hosts_from_file (temp); | |
726f6388 JA |
416 | |
417 | if (hostname_list) | |
418 | hostname_list_initialized++; | |
419 | } | |
420 | ||
421 | /* Add NAME to the list of hosts. */ | |
422 | static void | |
423 | add_host_name (name) | |
424 | char *name; | |
425 | { | |
ccc6cda3 JA |
426 | long size; |
427 | ||
726f6388 JA |
428 | if (hostname_list_length + 2 > hostname_list_size) |
429 | { | |
ccc6cda3 JA |
430 | hostname_list_size = (hostname_list_size + 32) - (hostname_list_size % 32); |
431 | size = hostname_list_size * sizeof (char *); | |
432 | hostname_list = (char **)xrealloc (hostname_list, size); | |
726f6388 JA |
433 | } |
434 | ||
ccc6cda3 JA |
435 | hostname_list[hostname_list_length++] = savestring (name); |
436 | hostname_list[hostname_list_length] = (char *)NULL; | |
726f6388 JA |
437 | } |
438 | ||
439 | #define cr_whitespace(c) ((c) == '\r' || (c) == '\n' || whitespace(c)) | |
440 | ||
441 | static void | |
442 | snarf_hosts_from_file (filename) | |
443 | char *filename; | |
444 | { | |
ccc6cda3 | 445 | FILE *file; |
726f6388 JA |
446 | char *temp, buffer[256], name[256]; |
447 | register int i, start; | |
448 | ||
ccc6cda3 JA |
449 | file = fopen (filename, "r"); |
450 | if (file == 0) | |
726f6388 JA |
451 | return; |
452 | ||
453 | while (temp = fgets (buffer, 255, file)) | |
454 | { | |
455 | /* Skip to first character. */ | |
ccc6cda3 JA |
456 | for (i = 0; buffer[i] && cr_whitespace (buffer[i]); i++) |
457 | ; | |
726f6388 | 458 | |
ccc6cda3 JA |
459 | /* If comment or blank line, ignore. */ |
460 | if (buffer[i] == '\0' || buffer[i] == '#') | |
726f6388 JA |
461 | continue; |
462 | ||
463 | /* If `preprocessor' directive, do the include. */ | |
ccc6cda3 | 464 | if (strncmp (buffer + i, "$include ", 9) == 0) |
726f6388 | 465 | { |
ccc6cda3 | 466 | char *incfile, *t; |
726f6388 JA |
467 | |
468 | /* Find start of filename. */ | |
ccc6cda3 JA |
469 | for (incfile = buffer + i + 9; *incfile && whitespace (*incfile); incfile++) |
470 | ; | |
726f6388 JA |
471 | |
472 | /* Find end of filename. */ | |
ccc6cda3 JA |
473 | for (t = incfile; *t && cr_whitespace (*t) == 0; t++) |
474 | ; | |
726f6388 JA |
475 | |
476 | *t = '\0'; | |
477 | ||
ccc6cda3 | 478 | snarf_hosts_from_file (incfile); |
726f6388 JA |
479 | continue; |
480 | } | |
481 | ||
ccc6cda3 JA |
482 | /* Skip internet address if present. */ |
483 | if (digit (buffer[i])) | |
484 | for (; buffer[i] && cr_whitespace (buffer[i]) == 0; i++); | |
726f6388 JA |
485 | |
486 | /* Gobble up names. Each name is separated with whitespace. */ | |
ccc6cda3 | 487 | while (buffer[i]) |
726f6388 | 488 | { |
ccc6cda3 JA |
489 | for (; cr_whitespace (buffer[i]); i++) |
490 | ; | |
491 | if (buffer[i] == '\0' || buffer[i] == '#') | |
492 | break; | |
493 | ||
494 | /* Isolate the current word. */ | |
495 | for (start = i; buffer[i] && cr_whitespace (buffer[i]) == 0; i++) | |
496 | ; | |
497 | if (i == start) | |
726f6388 JA |
498 | continue; |
499 | strncpy (name, buffer + start, i - start); | |
500 | name[i - start] = '\0'; | |
501 | add_host_name (name); | |
502 | } | |
503 | } | |
504 | fclose (file); | |
505 | } | |
506 | ||
507 | /* Return a NULL terminated list of hostnames which begin with TEXT. | |
508 | Initialize the hostname list the first time if neccessary. | |
509 | The array is malloc ()'ed, but not the individual strings. */ | |
510 | static char ** | |
511 | hostnames_matching (text) | |
512 | char *text; | |
513 | { | |
ccc6cda3 JA |
514 | register int i, len, nmatch, rsize; |
515 | char **result; | |
726f6388 | 516 | |
ccc6cda3 JA |
517 | if (hostname_list_initialized == 0) |
518 | initialize_hostname_list (); | |
726f6388 | 519 | |
ccc6cda3 JA |
520 | if (hostname_list_initialized == 0) |
521 | return ((char **)NULL); | |
726f6388 JA |
522 | |
523 | /* Special case. If TEXT consists of nothing, then the whole list is | |
524 | what is desired. */ | |
ccc6cda3 | 525 | if (*text == '\0') |
726f6388 JA |
526 | { |
527 | result = (char **)xmalloc ((1 + hostname_list_length) * sizeof (char *)); | |
528 | for (i = 0; i < hostname_list_length; i++) | |
529 | result[i] = hostname_list[i]; | |
530 | result[i] = (char *)NULL; | |
531 | return (result); | |
532 | } | |
533 | ||
534 | /* Scan until found, or failure. */ | |
ccc6cda3 JA |
535 | len = strlen (text); |
536 | result = (char **)NULL; | |
537 | for (i = nmatch = rsize = 0; i < hostname_list_length; i++) | |
726f6388 | 538 | { |
ccc6cda3 JA |
539 | if (STREQN (text, hostname_list[i], len) == 0) |
540 | continue; | |
726f6388 | 541 | |
ccc6cda3 | 542 | /* OK, it matches. Add it to the list. */ |
bc4cd23c | 543 | if (nmatch >= (rsize - 1)) |
726f6388 | 544 | { |
ccc6cda3 JA |
545 | rsize = (rsize + 16) - (rsize % 16); |
546 | result = (char **)xrealloc (result, rsize * sizeof (char *)); | |
726f6388 JA |
547 | } |
548 | ||
ccc6cda3 | 549 | result[nmatch++] = hostname_list[i]; |
726f6388 | 550 | } |
ccc6cda3 JA |
551 | if (nmatch) |
552 | result[nmatch] = (char *)NULL; | |
553 | return (result); | |
726f6388 JA |
554 | } |
555 | ||
ccc6cda3 | 556 | /* The equivalent of the Korn shell C-o operate-and-get-next-history-line |
726f6388 | 557 | editing command. */ |
ccc6cda3 | 558 | static int saved_history_line_to_use = -1; |
726f6388 JA |
559 | |
560 | static void | |
561 | set_saved_history () | |
562 | { | |
ccc6cda3 | 563 | if (saved_history_line_to_use >= 0) |
726f6388 | 564 | rl_get_previous_history (history_length - saved_history_line_to_use); |
ccc6cda3 | 565 | saved_history_line_to_use = -1; |
726f6388 | 566 | rl_startup_hook = old_rl_startup_hook; |
ccc6cda3 | 567 | } |
726f6388 JA |
568 | |
569 | static void | |
570 | operate_and_get_next (count, c) | |
571 | int count, c; | |
572 | { | |
573 | int where; | |
574 | ||
575 | /* Accept the current line. */ | |
ccc6cda3 | 576 | rl_newline (); |
726f6388 JA |
577 | |
578 | /* Find the current line, and find the next line to use. */ | |
579 | where = where_history (); | |
580 | ||
581 | if ((history_is_stifled () && (history_length >= max_input_history)) || | |
582 | (where >= history_length - 1)) | |
583 | saved_history_line_to_use = where; | |
584 | else | |
585 | saved_history_line_to_use = where + 1; | |
586 | ||
587 | old_rl_startup_hook = rl_startup_hook; | |
588 | rl_startup_hook = (Function *)set_saved_history; | |
589 | } | |
590 | ||
591 | #if defined (VI_MODE) | |
592 | /* This vi mode command causes VI_EDIT_COMMAND to be run on the current | |
593 | command being entered (if no explicit argument is given), otherwise on | |
594 | a command from the history file. */ | |
595 | ||
596 | #define VI_EDIT_COMMAND "fc -e ${VISUAL:-${EDITOR:-vi}}" | |
597 | ||
598 | static void | |
599 | vi_edit_and_execute_command (count, c) | |
ccc6cda3 | 600 | int count, c; |
726f6388 JA |
601 | { |
602 | char *command; | |
603 | ||
604 | /* Accept the current line. */ | |
ccc6cda3 | 605 | rl_newline (); |
726f6388 JA |
606 | |
607 | if (rl_explicit_arg) | |
608 | { | |
609 | command = xmalloc (strlen (VI_EDIT_COMMAND) + 8); | |
610 | sprintf (command, "%s %d", VI_EDIT_COMMAND, count); | |
611 | } | |
612 | else | |
613 | { | |
614 | /* Take the command we were just editing, add it to the history file, | |
615 | then call fc to operate on it. We have to add a dummy command to | |
616 | the end of the history because fc ignores the last command (assumes | |
617 | it's supposed to deal with the command before the `fc'). */ | |
618 | using_history (); | |
d166f048 JA |
619 | bash_add_history (rl_line_buffer); |
620 | bash_add_history (""); | |
726f6388 JA |
621 | history_lines_this_session++; |
622 | using_history (); | |
623 | command = savestring (VI_EDIT_COMMAND); | |
624 | } | |
d166f048 | 625 | parse_and_execute (command, "v", SEVAL_NOHIST); |
ccc6cda3 | 626 | rl_line_buffer[0] = '\0'; /* XXX */ |
726f6388 JA |
627 | } |
628 | #endif /* VI_MODE */ | |
629 | ||
ccc6cda3 JA |
630 | #if defined (ALIAS) |
631 | static int | |
632 | posix_edit_macros (count, key) | |
633 | int count, key; | |
634 | { | |
635 | int c; | |
636 | char alias_name[3], *alias_value, *macro; | |
637 | ||
638 | c = rl_read_key (); | |
639 | alias_name[0] = '_'; | |
640 | alias_name[1] = c; | |
641 | alias_name[2] = '\0'; | |
642 | ||
643 | alias_value = get_alias_value (alias_name); | |
644 | if (alias_value && *alias_value) | |
645 | { | |
646 | macro = savestring (alias_value); | |
647 | rl_push_macro_input (macro); | |
648 | } | |
649 | return 0; | |
650 | } | |
651 | #endif | |
652 | ||
726f6388 JA |
653 | /* **************************************************************** */ |
654 | /* */ | |
655 | /* How To Do Shell Completion */ | |
656 | /* */ | |
657 | /* **************************************************************** */ | |
658 | ||
659 | /* Do some completion on TEXT. The indices of TEXT in RL_LINE_BUFFER are | |
660 | at START and END. Return an array of matches, or NULL if none. */ | |
661 | static char ** | |
662 | attempt_shell_completion (text, start, end) | |
663 | char *text; | |
664 | int start, end; | |
665 | { | |
666 | int in_command_position, ti; | |
ccc6cda3 | 667 | char **matches, *command_separator_chars; |
726f6388 | 668 | |
ccc6cda3 JA |
669 | command_separator_chars = ";|&{(`"; |
670 | matches = (char **)NULL; | |
671 | rl_ignore_some_completions_function = (Function *)filename_completion_ignore; | |
726f6388 JA |
672 | |
673 | /* Determine if this could be a command word. It is if it appears at | |
674 | the start of the line (ignoring preceding whitespace), or if it | |
675 | appears after a character that separates commands. It cannot be a | |
676 | command word if we aren't at the top-level prompt. */ | |
677 | ti = start - 1; | |
678 | ||
679 | while ((ti > -1) && (whitespace (rl_line_buffer[ti]))) | |
680 | ti--; | |
681 | ||
682 | in_command_position = 0; | |
683 | if (ti < 0) | |
684 | { | |
685 | /* Only do command completion at the start of a line when we | |
686 | are prompting at the top level. */ | |
687 | if (current_prompt_string == ps1_prompt) | |
688 | in_command_position++; | |
689 | } | |
690 | else if (member (rl_line_buffer[ti], command_separator_chars)) | |
691 | { | |
692 | register int this_char, prev_char; | |
693 | ||
694 | in_command_position++; | |
695 | ||
696 | /* Handle the two character tokens `>&', `<&', and `>|'. | |
697 | We are not in a command position after one of these. */ | |
698 | this_char = rl_line_buffer[ti]; | |
699 | prev_char = rl_line_buffer[ti - 1]; | |
700 | ||
701 | if ((this_char == '&' && (prev_char == '<' || prev_char == '>')) || | |
702 | (this_char == '|' && prev_char == '>')) | |
703 | in_command_position = 0; | |
ccc6cda3 JA |
704 | else if ((this_char == '{' && prev_char == '$') || |
705 | (char_is_quoted (rl_line_buffer, ti))) | |
726f6388 JA |
706 | in_command_position = 0; |
707 | } | |
708 | else | |
709 | { | |
710 | /* This still could be in command position. It is possible | |
711 | that all of the previous words on the line are variable | |
712 | assignments. */ | |
713 | } | |
714 | ||
d166f048 JA |
715 | /* Check that we haven't incorrectly flagged a closed command substitution |
716 | as indicating we're in a command position. */ | |
e8ce775d JA |
717 | if (in_command_position && ti >= 0 && rl_line_buffer[ti] == '`' && |
718 | *text != '`' && unclosed_pair (rl_line_buffer, 0, "`") == 0) | |
d166f048 JA |
719 | in_command_position = 0; |
720 | ||
721 | /* Special handling for command substitution. If *TEXT is a backquote, | |
722 | it can be the start or end of an old-style command substitution, or | |
723 | unmatched. If it's unmatched, both calls to unclosed_pair will | |
724 | succeed. */ | |
725 | if (*text == '`' && unclosed_pair (rl_line_buffer, start, "`") && | |
726 | unclosed_pair (rl_line_buffer, end, "`")) | |
726f6388 JA |
727 | matches = completion_matches (text, command_subst_completion_function); |
728 | ||
729 | /* Variable name? */ | |
730 | if (!matches && *text == '$') | |
731 | matches = completion_matches (text, variable_completion_function); | |
732 | ||
733 | /* If the word starts in `~', and there is no slash in the word, then | |
734 | try completing this word as a username. */ | |
735 | if (!matches && *text == '~' && !strchr (text, '/')) | |
736 | matches = completion_matches (text, username_completion_function); | |
737 | ||
738 | /* Another one. Why not? If the word starts in '@', then look through | |
739 | the world of known hostnames for completion first. */ | |
ccc6cda3 | 740 | if (!matches && perform_hostname_completion && *text == '@') |
726f6388 JA |
741 | matches = completion_matches (text, hostname_completion_function); |
742 | ||
743 | /* And last, (but not least) if this word is in a command position, then | |
744 | complete over possible command names, including aliases, functions, | |
745 | and command names. */ | |
746 | if (!matches && in_command_position) | |
747 | { | |
748 | matches = completion_matches (text, command_word_completion_function); | |
749 | /* If we are attempting command completion and nothing matches, we | |
750 | do not want readline to perform filename completion for us. We | |
751 | still want to be able to complete partial pathnames, so set the | |
752 | completion ignore function to something which will remove filenames | |
753 | and leave directories in the match list. */ | |
754 | if (!matches) | |
755 | rl_ignore_some_completions_function = (Function *)bash_ignore_filenames; | |
756 | } | |
757 | ||
ccc6cda3 JA |
758 | /* This could be a globbing pattern, so try to expand it using pathname |
759 | expansion. */ | |
760 | if (!matches && glob_pattern_p (text)) | |
e8ce775d JA |
761 | { |
762 | matches = completion_matches (text, glob_complete_word); | |
763 | /* A glob expression that matches more than one filename is problematic. | |
764 | If we match more than one filename, punt. */ | |
765 | if (matches && matches[1]) | |
766 | { | |
767 | free_array (matches); | |
768 | matches = (char **)0; | |
769 | } | |
770 | } | |
ccc6cda3 | 771 | |
726f6388 JA |
772 | return (matches); |
773 | } | |
774 | ||
775 | /* This is the function to call when the word to complete is in a position | |
776 | where a command word can be found. It grovels $PATH, looking for commands | |
777 | that match. It also scans aliases, function names, and the shell_builtin | |
778 | table. */ | |
779 | static char * | |
780 | command_word_completion_function (hint_text, state) | |
781 | char *hint_text; | |
782 | int state; | |
783 | { | |
784 | static char *hint = (char *)NULL; | |
785 | static char *path = (char *)NULL; | |
786 | static char *val = (char *)NULL; | |
787 | static char *filename_hint = (char *)NULL; | |
788 | static int path_index, hint_len, istate; | |
789 | static int mapping_over, local_index; | |
790 | static SHELL_VAR **varlist = (SHELL_VAR **)NULL; | |
791 | #if defined (ALIAS) | |
ccc6cda3 | 792 | static alias_t **alias_list = (alias_t **)NULL; |
726f6388 JA |
793 | #endif /* ALIAS */ |
794 | ||
795 | /* We have to map over the possibilities for command words. If we have | |
796 | no state, then make one just for that purpose. */ | |
726f6388 JA |
797 | if (!state) |
798 | { | |
799 | if (hint) | |
800 | free (hint); | |
801 | ||
802 | mapping_over = 0; | |
803 | val = (char *)NULL; | |
804 | ||
805 | /* If this is an absolute program name, do not check it against | |
806 | aliases, reserved words, functions or builtins. We must check | |
807 | whether or not it is unique, and, if so, whether that filename | |
808 | is executable. */ | |
809 | if (absolute_program (hint_text)) | |
810 | { | |
811 | /* Perform tilde expansion on what's passed, so we don't end up | |
812 | passing filenames with tildes directly to stat(). */ | |
813 | if (*hint_text == '~') | |
ccc6cda3 | 814 | hint = bash_tilde_expand (hint_text); |
726f6388 JA |
815 | else |
816 | hint = savestring (hint_text); | |
817 | hint_len = strlen (hint); | |
818 | ||
819 | if (filename_hint) | |
820 | free (filename_hint); | |
821 | filename_hint = savestring (hint); | |
822 | ||
823 | mapping_over = 4; | |
824 | istate = 0; | |
825 | goto inner; | |
826 | } | |
827 | ||
828 | hint = savestring (hint_text); | |
829 | hint_len = strlen (hint); | |
830 | ||
831 | path = get_string_value ("PATH"); | |
832 | path_index = 0; | |
833 | ||
834 | /* Initialize the variables for each type of command word. */ | |
835 | local_index = 0; | |
836 | ||
837 | if (varlist) | |
838 | free (varlist); | |
839 | ||
840 | varlist = all_visible_functions (); | |
841 | ||
842 | #if defined (ALIAS) | |
843 | if (alias_list) | |
844 | free (alias_list); | |
845 | ||
846 | alias_list = all_aliases (); | |
847 | #endif /* ALIAS */ | |
848 | } | |
849 | ||
850 | /* mapping_over says what we are currently hacking. Note that every case | |
851 | in this list must fall through when there are no more possibilities. */ | |
852 | ||
853 | switch (mapping_over) | |
854 | { | |
855 | case 0: /* Aliases come first. */ | |
856 | #if defined (ALIAS) | |
857 | while (alias_list && alias_list[local_index]) | |
858 | { | |
859 | register char *alias; | |
860 | ||
861 | alias = alias_list[local_index++]->name; | |
862 | ||
863 | if (STREQN (alias, hint, hint_len)) | |
864 | return (savestring (alias)); | |
865 | } | |
866 | #endif /* ALIAS */ | |
867 | local_index = 0; | |
868 | mapping_over++; | |
869 | ||
870 | case 1: /* Then shell reserved words. */ | |
871 | { | |
872 | while (word_token_alist[local_index].word) | |
873 | { | |
874 | register char *reserved_word; | |
875 | ||
876 | reserved_word = word_token_alist[local_index++].word; | |
877 | ||
878 | if (STREQN (reserved_word, hint, hint_len)) | |
879 | return (savestring (reserved_word)); | |
880 | } | |
881 | local_index = 0; | |
882 | mapping_over++; | |
883 | } | |
884 | ||
885 | case 2: /* Then function names. */ | |
886 | while (varlist && varlist[local_index]) | |
887 | { | |
888 | register char *varname; | |
889 | ||
890 | varname = varlist[local_index++]->name; | |
891 | ||
892 | if (STREQN (varname, hint, hint_len)) | |
893 | return (savestring (varname)); | |
894 | } | |
895 | local_index = 0; | |
896 | mapping_over++; | |
897 | ||
898 | case 3: /* Then shell builtins. */ | |
899 | for (; local_index < num_shell_builtins; local_index++) | |
900 | { | |
901 | /* Ignore it if it doesn't have a function pointer or if it | |
902 | is not currently enabled. */ | |
903 | if (!shell_builtins[local_index].function || | |
904 | (shell_builtins[local_index].flags & BUILTIN_ENABLED) == 0) | |
905 | continue; | |
906 | ||
907 | if (STREQN (shell_builtins[local_index].name, hint, hint_len)) | |
908 | { | |
909 | int i = local_index++; | |
910 | ||
911 | return (savestring (shell_builtins[i].name)); | |
912 | } | |
913 | } | |
914 | local_index = 0; | |
915 | mapping_over++; | |
916 | } | |
917 | ||
ccc6cda3 | 918 | /* Repeatedly call filename_completion_function while we have |
726f6388 JA |
919 | members of PATH left. Question: should we stat each file? |
920 | Answer: we call executable_file () on each file. */ | |
921 | outer: | |
922 | ||
923 | istate = (val != (char *)NULL); | |
924 | ||
925 | if (!istate) | |
926 | { | |
927 | char *current_path; | |
928 | ||
929 | /* Get the next directory from the path. If there is none, then we | |
930 | are all done. */ | |
931 | if (!path || !path[path_index] || | |
932 | (current_path = extract_colon_unit (path, &path_index)) == 0) | |
933 | return ((char *)NULL); | |
934 | ||
935 | if (*current_path == 0) | |
936 | { | |
937 | free (current_path); | |
938 | current_path = savestring ("."); | |
939 | } | |
940 | ||
941 | if (*current_path == '~') | |
942 | { | |
943 | char *t; | |
944 | ||
ccc6cda3 | 945 | t = bash_tilde_expand (current_path); |
726f6388 JA |
946 | free (current_path); |
947 | current_path = t; | |
948 | } | |
949 | ||
950 | if (filename_hint) | |
951 | free (filename_hint); | |
952 | ||
953 | filename_hint = xmalloc (2 + strlen (current_path) + hint_len); | |
954 | sprintf (filename_hint, "%s/%s", current_path, hint); | |
955 | ||
956 | free (current_path); | |
957 | } | |
958 | ||
959 | inner: | |
960 | val = filename_completion_function (filename_hint, istate); | |
961 | istate = 1; | |
962 | ||
ccc6cda3 | 963 | if (val == 0) |
726f6388 JA |
964 | { |
965 | /* If the hint text is an absolute program, then don't bother | |
966 | searching through PATH. */ | |
967 | if (absolute_program (hint)) | |
968 | return ((char *)NULL); | |
969 | ||
970 | goto outer; | |
971 | } | |
972 | else | |
973 | { | |
d166f048 | 974 | int match, freetemp; |
726f6388 JA |
975 | char *temp; |
976 | ||
977 | if (absolute_program (hint)) | |
978 | { | |
979 | match = strncmp (val, hint, hint_len) == 0; | |
980 | /* If we performed tilde expansion, restore the original | |
981 | filename. */ | |
982 | if (*hint_text == '~') | |
983 | { | |
984 | int l, tl, vl; | |
985 | vl = strlen (val); | |
986 | tl = strlen (hint_text); | |
987 | l = vl - hint_len; /* # of chars added */ | |
988 | temp = xmalloc (l + 2 + tl); | |
989 | strcpy (temp, hint_text); | |
990 | strcpy (temp + tl, val + vl - l); | |
991 | } | |
992 | else | |
993 | temp = savestring (val); | |
d166f048 | 994 | freetemp = 1; |
726f6388 JA |
995 | } |
996 | else | |
997 | { | |
998 | temp = strrchr (val, '/'); | |
999 | ||
1000 | if (temp) | |
1001 | { | |
1002 | temp++; | |
d166f048 | 1003 | freetemp = match = strncmp (temp, hint, hint_len) == 0; |
726f6388 JA |
1004 | if (match) |
1005 | temp = savestring (temp); | |
1006 | } | |
1007 | else | |
d166f048 | 1008 | freetemp = match = 0; |
726f6388 JA |
1009 | } |
1010 | ||
ccc6cda3 JA |
1011 | /* If we have found a match, and it is an executable file or a |
1012 | directory name, return it. */ | |
1013 | if (match && (executable_file (val) || is_directory (val))) | |
726f6388 JA |
1014 | { |
1015 | free (val); | |
1016 | val = ""; /* So it won't be NULL. */ | |
1017 | return (temp); | |
1018 | } | |
1019 | else | |
1020 | { | |
d166f048 JA |
1021 | if (freetemp) |
1022 | free (temp); | |
726f6388 JA |
1023 | free (val); |
1024 | goto inner; | |
1025 | } | |
1026 | } | |
1027 | } | |
1028 | ||
d166f048 | 1029 | /* Completion inside an unterminated command substitution. */ |
726f6388 JA |
1030 | static char * |
1031 | command_subst_completion_function (text, state) | |
726f6388 | 1032 | char *text; |
ccc6cda3 | 1033 | int state; |
726f6388 JA |
1034 | { |
1035 | static char **matches = (char **)NULL; | |
1036 | static char *orig_start, *filename_text = (char *)NULL; | |
1037 | static int cmd_index, start_len; | |
ccc6cda3 | 1038 | char *value; |
726f6388 JA |
1039 | |
1040 | if (state == 0) | |
1041 | { | |
1042 | if (filename_text) | |
1043 | free (filename_text); | |
1044 | orig_start = text; | |
1045 | if (*text == '`') | |
1046 | text++; | |
cce855bc | 1047 | else if (*text == '$' && text[1] == '(') /* ) */ |
726f6388 JA |
1048 | text += 2; |
1049 | start_len = text - orig_start; | |
1050 | filename_text = savestring (text); | |
1051 | if (matches) | |
1052 | free (matches); | |
1053 | matches = completion_matches (filename_text, command_word_completion_function); | |
1054 | cmd_index = 0; | |
1055 | } | |
1056 | ||
1057 | if (!matches || !matches[cmd_index]) | |
1058 | { | |
1059 | rl_filename_quoting_desired = 0; /* disable quoting */ | |
1060 | return ((char *)NULL); | |
1061 | } | |
1062 | else | |
1063 | { | |
726f6388 JA |
1064 | value = xmalloc (1 + start_len + strlen (matches[cmd_index])); |
1065 | ||
1066 | if (start_len == 1) | |
1067 | value[0] = *orig_start; | |
1068 | else | |
1069 | strncpy (value, orig_start, start_len); | |
1070 | ||
1071 | strcpy (value + start_len, matches[cmd_index]); | |
1072 | ||
1073 | cmd_index++; | |
1074 | return (value); | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | /* Okay, now we write the entry_function for variable completion. */ | |
1079 | static char * | |
1080 | variable_completion_function (text, state) | |
1081 | int state; | |
1082 | char *text; | |
1083 | { | |
1084 | register SHELL_VAR *var = (SHELL_VAR *)NULL; | |
1085 | static SHELL_VAR **varlist = (SHELL_VAR **)NULL; | |
1086 | static int varlist_index; | |
1087 | static char *varname = (char *)NULL; | |
1088 | static int namelen; | |
1089 | static int first_char, first_char_loc; | |
1090 | ||
1091 | if (!state) | |
1092 | { | |
1093 | if (varname) | |
1094 | free (varname); | |
1095 | ||
1096 | first_char_loc = 0; | |
1097 | first_char = text[0]; | |
1098 | ||
1099 | if (first_char == '$') | |
1100 | first_char_loc++; | |
1101 | ||
ccc6cda3 JA |
1102 | if (text[first_char_loc] == '{') |
1103 | first_char_loc++; | |
1104 | ||
726f6388 JA |
1105 | varname = savestring (text + first_char_loc); |
1106 | ||
1107 | namelen = strlen (varname); | |
1108 | if (varlist) | |
1109 | free (varlist); | |
1110 | varlist = all_visible_variables (); | |
1111 | varlist_index = 0; | |
1112 | } | |
1113 | ||
1114 | while (varlist && varlist[varlist_index]) | |
1115 | { | |
1116 | var = varlist[varlist_index]; | |
1117 | ||
1118 | /* Compare. You can't do better than Zayre. No text is also | |
1119 | a match. */ | |
1120 | if (!*varname || (strncmp (varname, var->name, namelen) == 0)) | |
1121 | break; | |
1122 | varlist_index++; | |
1123 | } | |
1124 | ||
1125 | if (!varlist || !varlist[varlist_index]) | |
1126 | { | |
1127 | return ((char *)NULL); | |
1128 | } | |
1129 | else | |
1130 | { | |
ccc6cda3 | 1131 | char *value = xmalloc (4 + strlen (var->name)); |
726f6388 JA |
1132 | |
1133 | if (first_char_loc) | |
ccc6cda3 JA |
1134 | { |
1135 | value[0] = first_char; | |
1136 | if (first_char_loc == 2) | |
1137 | value[1] = '{'; | |
1138 | } | |
726f6388 JA |
1139 | |
1140 | strcpy (&value[first_char_loc], var->name); | |
ccc6cda3 JA |
1141 | if (first_char_loc == 2) |
1142 | strcat (value, "}"); | |
726f6388 JA |
1143 | |
1144 | varlist_index++; | |
1145 | return (value); | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | /* How about a completion function for hostnames? */ | |
1150 | static char * | |
1151 | hostname_completion_function (text, state) | |
1152 | int state; | |
1153 | char *text; | |
1154 | { | |
1155 | static char **list = (char **)NULL; | |
1156 | static int list_index = 0; | |
1157 | static int first_char, first_char_loc; | |
1158 | ||
1159 | /* If we don't have any state, make some. */ | |
ccc6cda3 | 1160 | if (state == 0) |
726f6388 | 1161 | { |
ccc6cda3 | 1162 | FREE (list); |
726f6388 JA |
1163 | |
1164 | list = (char **)NULL; | |
1165 | ||
1166 | first_char_loc = 0; | |
1167 | first_char = *text; | |
1168 | ||
1169 | if (first_char == '@') | |
1170 | first_char_loc++; | |
1171 | ||
1172 | list = hostnames_matching (&text[first_char_loc]); | |
1173 | list_index = 0; | |
1174 | } | |
1175 | ||
1176 | if (list && list[list_index]) | |
1177 | { | |
ccc6cda3 | 1178 | char *t; |
726f6388 | 1179 | |
ccc6cda3 | 1180 | t = xmalloc (2 + strlen (list[list_index])); |
726f6388 JA |
1181 | *t = first_char; |
1182 | strcpy (t + first_char_loc, list[list_index]); | |
1183 | list_index++; | |
1184 | return (t); | |
1185 | } | |
ccc6cda3 JA |
1186 | |
1187 | return ((char *)NULL); | |
726f6388 JA |
1188 | } |
1189 | ||
cce855bc JA |
1190 | /* Functions to perform history and alias expansions on the current line. */ |
1191 | ||
1192 | #if defined (BANG_HISTORY) | |
1193 | /* Perform history expansion on the current line. If no history expansion | |
1194 | is done, pre_process_line() returns what it was passed, so we need to | |
1195 | allocate a new line here. */ | |
726f6388 JA |
1196 | static char * |
1197 | history_expand_line_internal (line) | |
1198 | char *line; | |
1199 | { | |
1200 | char *new_line; | |
1201 | ||
1202 | new_line = pre_process_line (line, 0, 0); | |
d166f048 | 1203 | return (new_line == line) ? savestring (line) : new_line; |
726f6388 | 1204 | } |
726f6388 JA |
1205 | #endif |
1206 | ||
1207 | /* There was an error in expansion. Let the preprocessor print | |
1208 | the error here. */ | |
1209 | static void | |
1210 | cleanup_expansion_error () | |
1211 | { | |
1212 | char *to_free; | |
1213 | ||
1214 | fprintf (rl_outstream, "\r\n"); | |
1215 | to_free = pre_process_line (rl_line_buffer, 1, 0); | |
d166f048 JA |
1216 | if (to_free != rl_line_buffer) |
1217 | free (to_free); | |
726f6388 JA |
1218 | putc ('\r', rl_outstream); |
1219 | rl_forced_update_display (); | |
1220 | } | |
1221 | ||
1222 | /* If NEW_LINE differs from what is in the readline line buffer, add an | |
1223 | undo record to get from the readline line buffer contents to the new | |
1224 | line and make NEW_LINE the current readline line. */ | |
1225 | static void | |
1226 | maybe_make_readline_line (new_line) | |
1227 | char *new_line; | |
1228 | { | |
1229 | if (strcmp (new_line, rl_line_buffer) != 0) | |
1230 | { | |
1231 | rl_point = rl_end; | |
1232 | ||
1233 | rl_add_undo (UNDO_BEGIN, 0, 0, 0); | |
1234 | rl_delete_text (0, rl_point); | |
1235 | rl_point = rl_end = 0; | |
1236 | rl_insert_text (new_line); | |
1237 | rl_add_undo (UNDO_END, 0, 0, 0); | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | /* Make NEW_LINE be the current readline line. This frees NEW_LINE. */ | |
1242 | static void | |
1243 | set_up_new_line (new_line) | |
1244 | char *new_line; | |
1245 | { | |
1246 | int old_point = rl_point; | |
1247 | int at_end = rl_point == rl_end; | |
1248 | ||
1249 | /* If the line was history and alias expanded, then make that | |
1250 | be one thing to undo. */ | |
1251 | maybe_make_readline_line (new_line); | |
1252 | free (new_line); | |
1253 | ||
1254 | /* Place rl_point where we think it should go. */ | |
1255 | if (at_end) | |
1256 | rl_point = rl_end; | |
1257 | else if (old_point < rl_end) | |
1258 | { | |
1259 | rl_point = old_point; | |
1260 | if (!whitespace (rl_line_buffer[rl_point])) | |
1261 | rl_forward_word (1); | |
1262 | } | |
1263 | } | |
1264 | ||
cce855bc JA |
1265 | #if defined (ALIAS) |
1266 | /* Expand aliases in the current readline line. */ | |
1267 | static int | |
1268 | alias_expand_line (ignore) | |
1269 | int ignore; | |
1270 | { | |
1271 | char *new_line; | |
1272 | ||
1273 | new_line = alias_expand (rl_line_buffer); | |
1274 | ||
1275 | if (new_line) | |
1276 | { | |
1277 | set_up_new_line (new_line); | |
1278 | return (0); | |
1279 | } | |
1280 | else | |
1281 | { | |
1282 | cleanup_expansion_error (); | |
1283 | return (1); | |
1284 | } | |
1285 | } | |
1286 | #endif | |
1287 | ||
1288 | #if defined (BANG_HISTORY) | |
726f6388 | 1289 | /* History expand the line. */ |
cce855bc | 1290 | static int |
726f6388 JA |
1291 | history_expand_line (ignore) |
1292 | int ignore; | |
1293 | { | |
1294 | char *new_line; | |
1295 | ||
1296 | new_line = history_expand_line_internal (rl_line_buffer); | |
1297 | ||
1298 | if (new_line) | |
cce855bc JA |
1299 | { |
1300 | set_up_new_line (new_line); | |
1301 | return (0); | |
1302 | } | |
726f6388 | 1303 | else |
cce855bc JA |
1304 | { |
1305 | cleanup_expansion_error (); | |
1306 | return (1); | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | /* Expand history substitutions in the current line and then insert a | |
1311 | space wherever set_up_new_line decided to put rl_point. */ | |
1312 | static int | |
1313 | tcsh_magic_space (ignore) | |
1314 | int ignore; | |
1315 | { | |
1316 | if (history_expand_line (ignore) == 0) | |
1317 | { | |
1318 | rl_insert (1, ' '); | |
1319 | return (0); | |
1320 | } | |
1321 | else | |
1322 | return (1); | |
726f6388 | 1323 | } |
cce855bc | 1324 | #endif |
ccc6cda3 | 1325 | |
726f6388 | 1326 | /* History and alias expand the line. */ |
cce855bc | 1327 | static int |
726f6388 JA |
1328 | history_and_alias_expand_line (ignore) |
1329 | int ignore; | |
1330 | { | |
1331 | char *new_line; | |
1332 | ||
1333 | new_line = pre_process_line (rl_line_buffer, 0, 0); | |
d166f048 JA |
1334 | if (new_line == rl_line_buffer) |
1335 | new_line = savestring (new_line); | |
726f6388 JA |
1336 | |
1337 | #if defined (ALIAS) | |
1338 | if (new_line) | |
1339 | { | |
1340 | char *alias_line; | |
1341 | ||
1342 | alias_line = alias_expand (new_line); | |
1343 | free (new_line); | |
1344 | new_line = alias_line; | |
1345 | } | |
1346 | #endif /* ALIAS */ | |
1347 | ||
1348 | if (new_line) | |
cce855bc JA |
1349 | { |
1350 | set_up_new_line (new_line); | |
1351 | return (0); | |
1352 | } | |
726f6388 | 1353 | else |
cce855bc JA |
1354 | { |
1355 | cleanup_expansion_error (); | |
1356 | return (1); | |
1357 | } | |
726f6388 JA |
1358 | } |
1359 | ||
1360 | /* History and alias expand the line, then perform the shell word | |
cce855bc JA |
1361 | expansions by calling expand_string. This can't use set_up_new_line() |
1362 | because we want the variable expansions as a separate undo'able | |
1363 | set of operations. */ | |
726f6388 JA |
1364 | static void |
1365 | shell_expand_line (ignore) | |
1366 | int ignore; | |
1367 | { | |
1368 | char *new_line; | |
ccc6cda3 | 1369 | WORD_LIST *expanded_string; |
726f6388 JA |
1370 | |
1371 | new_line = pre_process_line (rl_line_buffer, 0, 0); | |
d166f048 JA |
1372 | if (new_line == rl_line_buffer) |
1373 | new_line = savestring (new_line); | |
726f6388 JA |
1374 | |
1375 | #if defined (ALIAS) | |
1376 | if (new_line) | |
1377 | { | |
1378 | char *alias_line; | |
1379 | ||
1380 | alias_line = alias_expand (new_line); | |
1381 | free (new_line); | |
1382 | new_line = alias_line; | |
1383 | } | |
1384 | #endif /* ALIAS */ | |
1385 | ||
1386 | if (new_line) | |
1387 | { | |
1388 | int old_point = rl_point; | |
1389 | int at_end = rl_point == rl_end; | |
1390 | ||
1391 | /* If the line was history and alias expanded, then make that | |
1392 | be one thing to undo. */ | |
1393 | maybe_make_readline_line (new_line); | |
1394 | free (new_line); | |
1395 | ||
1396 | /* If there is variable expansion to perform, do that as a separate | |
1397 | operation to be undone. */ | |
d166f048 JA |
1398 | new_line = savestring (rl_line_buffer); |
1399 | expanded_string = expand_string (new_line, 0); | |
1400 | FREE (new_line); | |
ccc6cda3 JA |
1401 | if (expanded_string == 0) |
1402 | { | |
1403 | new_line = xmalloc (1); | |
1404 | new_line[0] = '\0'; | |
1405 | } | |
1406 | else | |
1407 | { | |
1408 | new_line = string_list (expanded_string); | |
1409 | dispose_words (expanded_string); | |
1410 | } | |
726f6388 | 1411 | |
ccc6cda3 JA |
1412 | maybe_make_readline_line (new_line); |
1413 | free (new_line); | |
726f6388 | 1414 | |
ccc6cda3 JA |
1415 | /* Place rl_point where we think it should go. */ |
1416 | if (at_end) | |
1417 | rl_point = rl_end; | |
1418 | else if (old_point < rl_end) | |
1419 | { | |
1420 | rl_point = old_point; | |
1421 | if (!whitespace (rl_line_buffer[rl_point])) | |
1422 | rl_forward_word (1); | |
1423 | } | |
726f6388 JA |
1424 | } |
1425 | else | |
1426 | cleanup_expansion_error (); | |
1427 | } | |
1428 | ||
cce855bc JA |
1429 | /* Define NO_FORCE_FIGNORE if you want to match filenames that would |
1430 | otherwise be ignored if they are the only possible matches. */ | |
1431 | /* #define NO_FORCE_FIGNORE */ | |
1432 | ||
ccc6cda3 JA |
1433 | /* If FIGNORE is set, then don't match files with the given suffixes when |
1434 | completing filenames. If only one of the possibilities has an acceptable | |
726f6388 JA |
1435 | suffix, delete the others, else just return and let the completer |
1436 | signal an error. It is called by the completer when real | |
1437 | completions are done on filenames by the completer's internal | |
1438 | function, not for completion lists (M-?) and not on "other" | |
ccc6cda3 | 1439 | completion types, such as hostnames or commands. */ |
726f6388 | 1440 | |
ccc6cda3 | 1441 | static struct ignorevar fignore = |
726f6388 | 1442 | { |
ccc6cda3 JA |
1443 | "FIGNORE", |
1444 | (struct ign *)0, | |
1445 | 0, | |
1446 | (char *)0, | |
1447 | (Function *) 0, | |
1448 | }; | |
726f6388 | 1449 | |
726f6388 | 1450 | static void |
ccc6cda3 | 1451 | _ignore_completion_names (names, name_func) |
726f6388 JA |
1452 | char **names; |
1453 | Function *name_func; | |
1454 | { | |
1455 | char **newnames; | |
1456 | int idx, nidx; | |
cce855bc JA |
1457 | #ifdef NO_FORCE_FIGNORE |
1458 | char **oldnames; | |
1459 | int oidx; | |
1460 | #endif | |
726f6388 JA |
1461 | |
1462 | /* If there is only one completion, see if it is acceptable. If it is | |
1463 | not, free it up. In any case, short-circuit and return. This is a | |
1464 | special case because names[0] is not the prefix of the list of names | |
1465 | if there is only one completion; it is the completion itself. */ | |
1466 | if (names[1] == (char *)0) | |
1467 | { | |
cce855bc | 1468 | #ifndef NO_FORCE_FIGNORE |
726f6388 JA |
1469 | if ((*name_func) (names[0]) == 0) |
1470 | { | |
1471 | free (names[0]); | |
1472 | names[0] = (char *)NULL; | |
1473 | } | |
cce855bc | 1474 | #endif |
726f6388 JA |
1475 | return; |
1476 | } | |
1477 | ||
1478 | /* Allocate space for array to hold list of pointers to matching | |
1479 | filenames. The pointers are copied back to NAMES when done. */ | |
1480 | for (nidx = 1; names[nidx]; nidx++) | |
1481 | ; | |
1482 | newnames = (char **)xmalloc ((nidx + 1) * (sizeof (char *))); | |
cce855bc JA |
1483 | #ifdef NO_FORCE_FIGNORE |
1484 | oldnames = (char **)xmalloc ((nidx - 1) * (sizeof (char *))); | |
1485 | oidx = 0; | |
1486 | #endif | |
726f6388 JA |
1487 | |
1488 | newnames[0] = names[0]; | |
1489 | for (idx = nidx = 1; names[idx]; idx++) | |
1490 | { | |
1491 | if ((*name_func) (names[idx])) | |
1492 | newnames[nidx++] = names[idx]; | |
1493 | else | |
cce855bc | 1494 | #ifndef NO_FORCE_FIGNORE |
ccc6cda3 | 1495 | free (names[idx]); |
cce855bc JA |
1496 | #else |
1497 | oldnames[oidx++] = names[idx]; | |
1498 | #endif | |
726f6388 JA |
1499 | } |
1500 | ||
1501 | newnames[nidx] = (char *)NULL; | |
1502 | ||
1503 | /* If none are acceptable then let the completer handle it. */ | |
1504 | if (nidx == 1) | |
1505 | { | |
cce855bc | 1506 | #ifndef NO_FORCE_FIGNORE |
726f6388 JA |
1507 | free (names[0]); |
1508 | names[0] = (char *)NULL; | |
cce855bc JA |
1509 | #else |
1510 | free (oldnames); | |
1511 | #endif | |
726f6388 JA |
1512 | free (newnames); |
1513 | return; | |
1514 | } | |
1515 | ||
cce855bc JA |
1516 | #ifdef NO_FORCE_FIGNORE |
1517 | while (oidx) | |
1518 | free (oldnames[--oidx]); | |
1519 | free (oldnames); | |
1520 | #endif | |
1521 | ||
726f6388 JA |
1522 | /* If only one is acceptable, copy it to names[0] and return. */ |
1523 | if (nidx == 2) | |
1524 | { | |
1525 | free (names[0]); | |
1526 | names[0] = newnames[1]; | |
1527 | names[1] = (char *)NULL; | |
1528 | free (newnames); | |
1529 | return; | |
1530 | } | |
ccc6cda3 | 1531 | |
726f6388 JA |
1532 | /* Copy the acceptable names back to NAMES, set the new array end, |
1533 | and return. */ | |
1534 | for (nidx = 1; newnames[nidx]; nidx++) | |
1535 | names[nidx] = newnames[nidx]; | |
1536 | names[nidx] = (char *)NULL; | |
ccc6cda3 JA |
1537 | free (newnames); |
1538 | } | |
1539 | ||
1540 | static int | |
1541 | name_is_acceptable (name) | |
1542 | char *name; | |
1543 | { | |
1544 | struct ign *p; | |
1545 | int nlen; | |
1546 | ||
1547 | for (nlen = strlen (name), p = fignore.ignores; p->val; p++) | |
1548 | { | |
1549 | if (nlen > p->len && p->len > 0 && STREQ (p->val, &name[nlen - p->len])) | |
1550 | return (0); | |
1551 | } | |
1552 | ||
1553 | return (1); | |
726f6388 JA |
1554 | } |
1555 | ||
1556 | static void | |
1557 | filename_completion_ignore (names) | |
1558 | char **names; | |
1559 | { | |
ccc6cda3 | 1560 | setup_ignore_patterns (&fignore); |
726f6388 | 1561 | |
ccc6cda3 | 1562 | if (fignore.num_ignores == 0) |
726f6388 JA |
1563 | return; |
1564 | ||
ccc6cda3 | 1565 | _ignore_completion_names (names, name_is_acceptable); |
726f6388 JA |
1566 | } |
1567 | ||
1568 | /* Return 1 if NAME is a directory. */ | |
1569 | static int | |
1570 | test_for_directory (name) | |
1571 | char *name; | |
1572 | { | |
1573 | struct stat finfo; | |
1574 | char *fn; | |
1575 | ||
ccc6cda3 | 1576 | fn = bash_tilde_expand (name); |
726f6388 JA |
1577 | if (stat (fn, &finfo) != 0) |
1578 | { | |
1579 | free (fn); | |
1580 | return 0; | |
1581 | } | |
1582 | free (fn); | |
1583 | return (S_ISDIR (finfo.st_mode)); | |
1584 | } | |
1585 | ||
1586 | /* Remove files from NAMES, leaving directories. */ | |
1587 | static void | |
1588 | bash_ignore_filenames (names) | |
1589 | char **names; | |
1590 | { | |
ccc6cda3 | 1591 | _ignore_completion_names (names, test_for_directory); |
726f6388 JA |
1592 | } |
1593 | ||
1594 | /* Handle symbolic link references and other directory name | |
1595 | expansions while hacking completion. */ | |
1596 | static int | |
1597 | bash_directory_completion_hook (dirname) | |
1598 | char **dirname; | |
1599 | { | |
1600 | char *local_dirname, *t; | |
1601 | int return_value = 0; | |
1602 | WORD_LIST *wl; | |
1603 | ||
1604 | local_dirname = *dirname; | |
1605 | if (strchr (local_dirname, '$') || strchr (local_dirname, '`')) | |
1606 | { | |
1607 | wl = expand_string (local_dirname, 0); | |
1608 | if (wl) | |
1609 | { | |
1610 | *dirname = string_list (wl); | |
1611 | /* Tell the completer to replace the directory name only if we | |
1612 | actually expanded something. */ | |
1613 | return_value = STREQ (local_dirname, *dirname) == 0; | |
1614 | free (local_dirname); | |
1615 | dispose_words (wl); | |
1616 | local_dirname = *dirname; | |
1617 | } | |
1618 | else | |
1619 | { | |
1620 | free (local_dirname); | |
ccc6cda3 JA |
1621 | *dirname = xmalloc (1); |
1622 | **dirname = '\0'; | |
726f6388 JA |
1623 | return 1; |
1624 | } | |
1625 | } | |
1626 | ||
1627 | if (!no_symbolic_links && (local_dirname[0] != '.' || local_dirname[1])) | |
1628 | { | |
1629 | char *temp1, *temp2; | |
1630 | int len1, len2; | |
1631 | ||
1632 | t = get_working_directory ("symlink-hook"); | |
1633 | temp1 = make_absolute (local_dirname, t); | |
1634 | free (t); | |
1635 | temp2 = canonicalize_pathname (temp1); | |
ccc6cda3 JA |
1636 | /* If we can't canonicalize, bail. */ |
1637 | if (temp2 == 0) | |
1638 | { | |
1639 | free (temp1); | |
1640 | return 1; | |
1641 | } | |
726f6388 JA |
1642 | len1 = strlen (temp1); |
1643 | if (temp1[len1 - 1] == '/') | |
1644 | { | |
1645 | len2 = strlen (temp2); | |
1646 | temp2 = xrealloc (temp2, len2 + 2); | |
1647 | temp2[len2] = '/'; | |
1648 | temp2[len2 + 1] = '\0'; | |
1649 | } | |
1650 | free (local_dirname); | |
1651 | *dirname = temp2; | |
1652 | free (temp1); | |
1653 | } | |
1654 | return (return_value); | |
1655 | } | |
1656 | ||
726f6388 | 1657 | static char **history_completion_array = (char **)NULL; |
ccc6cda3 JA |
1658 | static int harry_size; |
1659 | static int harry_len; | |
726f6388 JA |
1660 | |
1661 | static void | |
1662 | build_history_completion_array () | |
1663 | { | |
ccc6cda3 JA |
1664 | register int i, j; |
1665 | HIST_ENTRY **hlist; | |
1666 | char **tokens; | |
726f6388 JA |
1667 | |
1668 | /* First, clear out the current dynamic history completion list. */ | |
1669 | if (harry_size) | |
1670 | { | |
1671 | for (i = 0; history_completion_array[i]; i++) | |
1672 | free (history_completion_array[i]); | |
1673 | ||
1674 | free (history_completion_array); | |
1675 | ||
1676 | history_completion_array = (char **)NULL; | |
1677 | harry_size = 0; | |
1678 | harry_len = 0; | |
1679 | } | |
1680 | ||
1681 | /* Next, grovel each line of history, making each shell-sized token | |
1682 | a separate entry in the history_completion_array. */ | |
ccc6cda3 | 1683 | hlist = history_list (); |
726f6388 | 1684 | |
ccc6cda3 JA |
1685 | if (hlist) |
1686 | { | |
1687 | for (i = 0; hlist[i]; i++) | |
1688 | { | |
1689 | /* Separate each token, and place into an array. */ | |
1690 | tokens = history_tokenize (hlist[i]->line); | |
726f6388 | 1691 | |
ccc6cda3 JA |
1692 | for (j = 0; tokens && tokens[j]; j++) |
1693 | { | |
1694 | if (harry_len + 2 > harry_size) | |
1695 | { | |
1696 | harry_size += 10; | |
726f6388 | 1697 | history_completion_array = (char **) xrealloc |
ccc6cda3 JA |
1698 | (history_completion_array, harry_size * sizeof (char *)); |
1699 | } | |
726f6388 | 1700 | |
ccc6cda3 JA |
1701 | history_completion_array[harry_len++] = tokens[j]; |
1702 | history_completion_array[harry_len] = (char *)NULL; | |
1703 | } | |
1704 | free (tokens); | |
1705 | } | |
726f6388 | 1706 | |
ccc6cda3 JA |
1707 | /* Sort the complete list of tokens. */ |
1708 | qsort (history_completion_array, harry_len, sizeof (char *), (Function *)qsort_string_compare); | |
1709 | } | |
726f6388 JA |
1710 | } |
1711 | ||
1712 | static char * | |
1713 | history_completion_generator (hint_text, state) | |
1714 | char *hint_text; | |
1715 | int state; | |
1716 | { | |
ccc6cda3 JA |
1717 | static int local_index, len; |
1718 | static char *text; | |
726f6388 JA |
1719 | |
1720 | /* If this is the first call to the generator, then initialize the | |
1721 | list of strings to complete over. */ | |
ccc6cda3 | 1722 | if (state == 0) |
726f6388 JA |
1723 | { |
1724 | local_index = 0; | |
1725 | build_history_completion_array (); | |
1726 | text = hint_text; | |
1727 | len = strlen (text); | |
1728 | } | |
1729 | ||
1730 | while (history_completion_array && history_completion_array[local_index]) | |
1731 | { | |
1732 | if (strncmp (text, history_completion_array[local_index++], len) == 0) | |
1733 | return (savestring (history_completion_array[local_index - 1])); | |
1734 | } | |
1735 | return ((char *)NULL); | |
1736 | } | |
1737 | ||
1738 | static void | |
1739 | dynamic_complete_history (count, key) | |
1740 | int count, key; | |
1741 | { | |
1742 | Function *orig_func; | |
1743 | CPPFunction *orig_attempt_func; | |
1744 | ||
1745 | orig_func = rl_completion_entry_function; | |
1746 | orig_attempt_func = rl_attempted_completion_function; | |
1747 | rl_completion_entry_function = (Function *)history_completion_generator; | |
1748 | rl_attempted_completion_function = (CPPFunction *)NULL; | |
1749 | ||
1750 | if (rl_last_func == (Function *)dynamic_complete_history) | |
1751 | rl_complete_internal ('?'); | |
1752 | else | |
1753 | rl_complete_internal (TAB); | |
1754 | ||
1755 | rl_completion_entry_function = orig_func; | |
1756 | rl_attempted_completion_function = orig_attempt_func; | |
1757 | } | |
1758 | ||
726f6388 JA |
1759 | #if defined (SPECIFIC_COMPLETION_FUNCTIONS) |
1760 | static void | |
1761 | bash_complete_username (ignore, ignore2) | |
1762 | int ignore, ignore2; | |
1763 | { | |
1764 | bash_complete_username_internal (TAB); | |
1765 | } | |
1766 | ||
1767 | static void | |
1768 | bash_possible_username_completions (ignore, ignore2) | |
1769 | int ignore, ignore2; | |
1770 | { | |
1771 | bash_complete_username_internal ('?'); | |
1772 | } | |
1773 | ||
1774 | static void | |
1775 | bash_complete_username_internal (what_to_do) | |
1776 | int what_to_do; | |
1777 | { | |
1778 | bash_specific_completion | |
1779 | (what_to_do, (Function *)username_completion_function); | |
1780 | } | |
1781 | ||
1782 | static void | |
1783 | bash_complete_filename (ignore, ignore2) | |
1784 | int ignore, ignore2; | |
1785 | { | |
1786 | bash_complete_filename_internal (TAB); | |
1787 | } | |
1788 | ||
1789 | static void | |
1790 | bash_possible_filename_completions (ignore, ignore2) | |
1791 | int ignore, ignore2; | |
1792 | { | |
1793 | bash_complete_filename_internal ('?'); | |
1794 | } | |
1795 | ||
1796 | static void | |
1797 | bash_complete_filename_internal (what_to_do) | |
1798 | int what_to_do; | |
1799 | { | |
1800 | Function *orig_func, *orig_dir_func; | |
1801 | CPPFunction *orig_attempt_func; | |
1802 | char *orig_rl_completer_word_break_characters; | |
1803 | ||
1804 | orig_func = rl_completion_entry_function; | |
1805 | orig_attempt_func = rl_attempted_completion_function; | |
1806 | orig_dir_func = rl_directory_completion_hook; | |
1807 | orig_rl_completer_word_break_characters = rl_completer_word_break_characters; | |
1808 | rl_completion_entry_function = (Function *)filename_completion_function; | |
1809 | rl_attempted_completion_function = (CPPFunction *)NULL; | |
1810 | rl_directory_completion_hook = (Function *)NULL; | |
1811 | rl_completer_word_break_characters = " \t\n\"\'"; | |
1812 | ||
1813 | rl_complete_internal (what_to_do); | |
1814 | ||
1815 | rl_completion_entry_function = orig_func; | |
1816 | rl_attempted_completion_function = orig_attempt_func; | |
1817 | rl_directory_completion_hook = orig_dir_func; | |
1818 | rl_completer_word_break_characters = orig_rl_completer_word_break_characters; | |
1819 | } | |
1820 | ||
1821 | static void | |
1822 | bash_complete_hostname (ignore, ignore2) | |
1823 | int ignore, ignore2; | |
1824 | { | |
1825 | bash_complete_hostname_internal (TAB); | |
1826 | } | |
1827 | ||
1828 | static void | |
1829 | bash_possible_hostname_completions (ignore, ignore2) | |
1830 | int ignore, ignore2; | |
1831 | { | |
1832 | bash_complete_hostname_internal ('?'); | |
1833 | } | |
1834 | ||
1835 | static void | |
1836 | bash_complete_variable (ignore, ignore2) | |
1837 | int ignore, ignore2; | |
1838 | { | |
1839 | bash_complete_variable_internal (TAB); | |
1840 | } | |
1841 | ||
1842 | static void | |
1843 | bash_possible_variable_completions (ignore, ignore2) | |
1844 | int ignore, ignore2; | |
1845 | { | |
1846 | bash_complete_variable_internal ('?'); | |
1847 | } | |
1848 | ||
1849 | static void | |
1850 | bash_complete_command (ignore, ignore2) | |
1851 | int ignore, ignore2; | |
1852 | { | |
1853 | bash_complete_command_internal (TAB); | |
1854 | } | |
1855 | ||
1856 | static void | |
1857 | bash_possible_command_completions (ignore, ignore2) | |
1858 | int ignore, ignore2; | |
1859 | { | |
1860 | bash_complete_command_internal ('?'); | |
1861 | } | |
1862 | ||
1863 | static void | |
1864 | bash_complete_hostname_internal (what_to_do) | |
1865 | int what_to_do; | |
1866 | { | |
1867 | bash_specific_completion | |
1868 | (what_to_do, (Function *)hostname_completion_function); | |
1869 | } | |
1870 | ||
1871 | static void | |
1872 | bash_complete_variable_internal (what_to_do) | |
1873 | int what_to_do; | |
1874 | { | |
1875 | bash_specific_completion | |
1876 | (what_to_do, (Function *)variable_completion_function); | |
1877 | } | |
1878 | ||
1879 | static void | |
1880 | bash_complete_command_internal (what_to_do) | |
1881 | int what_to_do; | |
1882 | { | |
1883 | bash_specific_completion | |
1884 | (what_to_do, (Function *)command_word_completion_function); | |
1885 | } | |
1886 | ||
ccc6cda3 JA |
1887 | static char * |
1888 | glob_complete_word (text, state) | |
1889 | char *text; | |
1890 | int state; | |
1891 | { | |
1892 | static char **matches = (char **)NULL; | |
1893 | static int ind; | |
1894 | char *ret; | |
1895 | ||
1896 | if (state == 0) | |
1897 | { | |
e8ce775d | 1898 | rl_filename_completion_desired = 1; |
ccc6cda3 JA |
1899 | if (matches) |
1900 | free (matches); | |
1901 | matches = shell_glob_filename (text); | |
1902 | if (GLOB_FAILED (matches)) | |
1903 | matches = (char **)NULL; | |
1904 | ind = 0; | |
1905 | } | |
1906 | ||
1907 | ret = matches ? matches[ind] : (char *)NULL; | |
1908 | ind++; | |
1909 | return ret; | |
1910 | } | |
1911 | ||
1912 | static void | |
1913 | bash_glob_completion_internal (what_to_do) | |
1914 | int what_to_do; | |
1915 | { | |
1916 | bash_specific_completion (what_to_do, (Function *)glob_complete_word); | |
1917 | } | |
1918 | ||
1919 | static void | |
1920 | bash_glob_expand_word (count, key) | |
1921 | int count, key; | |
1922 | { | |
1923 | bash_glob_completion_internal ('*'); | |
1924 | } | |
1925 | ||
1926 | static void | |
1927 | bash_glob_list_expansions (count, key) | |
1928 | int count, key; | |
1929 | { | |
1930 | bash_glob_completion_internal ('?'); | |
1931 | } | |
1932 | ||
726f6388 JA |
1933 | static void |
1934 | bash_specific_completion (what_to_do, generator) | |
1935 | int what_to_do; | |
1936 | Function *generator; | |
1937 | { | |
1938 | Function *orig_func; | |
1939 | CPPFunction *orig_attempt_func; | |
1940 | ||
1941 | orig_func = rl_completion_entry_function; | |
1942 | orig_attempt_func = rl_attempted_completion_function; | |
1943 | rl_completion_entry_function = generator; | |
1944 | rl_attempted_completion_function = (CPPFunction *)NULL; | |
1945 | ||
1946 | rl_complete_internal (what_to_do); | |
1947 | ||
1948 | rl_completion_entry_function = orig_func; | |
1949 | rl_attempted_completion_function = orig_attempt_func; | |
1950 | } | |
1951 | ||
1952 | #endif /* SPECIFIC_COMPLETION_FUNCTIONS */ | |
ccc6cda3 JA |
1953 | |
1954 | /* Filename quoting for completion. */ | |
1955 | /* A function to strip quotes that are not protected by backquotes. It | |
1956 | allows single quotes to appear within double quotes, and vice versa. | |
1957 | It should be smarter. */ | |
1958 | static char * | |
1959 | bash_dequote_filename (text, quote_char) | |
1960 | char *text; | |
1961 | { | |
1962 | char *ret, *p, *r; | |
1963 | int l, quoted; | |
1964 | ||
1965 | l = strlen (text); | |
1966 | ret = xmalloc (l + 1); | |
1967 | for (quoted = quote_char, p = text, r = ret; p && *p; p++) | |
1968 | { | |
1969 | /* Allow backslash-quoted characters to pass through unscathed. */ | |
1970 | if (*p == '\\') | |
1971 | { | |
1972 | *r++ = *++p; | |
1973 | if (*p == '\0') | |
1974 | break; | |
1975 | continue; | |
1976 | } | |
1977 | /* Close quote. */ | |
1978 | if (quoted && *p == quoted) | |
1979 | { | |
1980 | quoted = 0; | |
1981 | continue; | |
1982 | } | |
1983 | /* Open quote. */ | |
1984 | if (quoted == 0 && (*p == '\'' || *p == '"')) | |
1985 | { | |
1986 | quoted = *p; | |
1987 | continue; | |
1988 | } | |
1989 | *r++ = *p; | |
1990 | } | |
1991 | *r = '\0'; | |
1992 | return ret; | |
1993 | } | |
1994 | ||
d166f048 JA |
1995 | /* Quote characters that the readline completion code would treat as |
1996 | word break characters with backslashes. Pass backslash-quoted | |
1997 | characters through without examination. */ | |
1998 | static char * | |
1999 | quote_word_break_chars (text) | |
2000 | char *text; | |
2001 | { | |
2002 | char *ret, *r, *s; | |
2003 | int l; | |
2004 | ||
2005 | l = strlen (text); | |
2006 | ret = xmalloc ((2 * l) + 1); | |
2007 | for (s = text, r = ret; *s; s++) | |
2008 | { | |
2009 | /* Pass backslash-quoted characters through, including the backslash. */ | |
2010 | if (*s == '\\') | |
2011 | { | |
2012 | *r++ = '\\'; | |
2013 | *r++ = *++s; | |
2014 | if (*s == '\0') | |
2015 | break; | |
2016 | continue; | |
2017 | } | |
2018 | /* OK, we have an unquoted character. Check its presence in | |
2019 | rl_completer_word_break_characters. */ | |
2020 | if (strchr (rl_completer_word_break_characters, *s)) | |
2021 | *r++ = '\\'; | |
2022 | *r++ = *s; | |
2023 | } | |
2024 | *r = '\0'; | |
2025 | return ret; | |
2026 | } | |
2027 | ||
2028 | /* Quote a filename using double quotes, single quotes, or backslashes | |
2029 | depending on the value of completion_quoting_style. If we're | |
2030 | completing using backslashes, we need to quote some additional | |
2031 | characters (those that readline treats as word breaks), so we call | |
2032 | quote_word_break_chars on the result. */ | |
ccc6cda3 JA |
2033 | static char * |
2034 | bash_quote_filename (s, rtype, qcp) | |
2035 | char *s; | |
2036 | int rtype; | |
2037 | char *qcp; | |
2038 | { | |
2039 | char *rtext, *mtext, *ret; | |
2040 | int rlen, cs; | |
2041 | ||
2042 | rtext = (char *)NULL; | |
2043 | ||
2044 | /* If RTYPE == MULT_MATCH, it means that there is | |
2045 | more than one match. In this case, we do not add | |
2046 | the closing quote or attempt to perform tilde | |
2047 | expansion. If RTYPE == SINGLE_MATCH, we try | |
2048 | to perform tilde expansion, because single and double | |
2049 | quotes inhibit tilde expansion by the shell. */ | |
2050 | ||
2051 | mtext = s; | |
2052 | if (mtext[0] == '~' && rtype == SINGLE_MATCH) | |
2053 | mtext = bash_tilde_expand (s); | |
2054 | ||
2055 | cs = completion_quoting_style; | |
2056 | /* Might need to modify the default completion style based on *qcp, | |
2057 | since it's set to any user-provided opening quote. */ | |
2058 | if (*qcp == '"') | |
2059 | cs = COMPLETE_DQUOTE; | |
2060 | else if (*qcp == '\'') | |
2061 | cs = COMPLETE_SQUOTE; | |
2062 | #if defined (BANG_HISTORY) | |
2063 | else if (*qcp == '\0' && history_expansion && cs == COMPLETE_DQUOTE && | |
2064 | history_expansion_inhibited == 0 && strchr (mtext, '!')) | |
2065 | cs = COMPLETE_BSQUOTE; | |
d166f048 JA |
2066 | |
2067 | if (*qcp == '"' && history_expansion && cs == COMPLETE_DQUOTE && | |
2068 | history_expansion_inhibited == 0 && strchr (mtext, '!')) | |
2069 | { | |
2070 | cs = COMPLETE_BSQUOTE; | |
2071 | *qcp = '\0'; | |
2072 | } | |
ccc6cda3 JA |
2073 | #endif |
2074 | ||
2075 | switch (cs) | |
2076 | { | |
2077 | case COMPLETE_DQUOTE: | |
2078 | rtext = double_quote (mtext); | |
2079 | break; | |
2080 | case COMPLETE_SQUOTE: | |
2081 | rtext = single_quote (mtext); | |
2082 | break; | |
2083 | case COMPLETE_BSQUOTE: | |
2084 | rtext = backslash_quote (mtext); | |
2085 | break; | |
2086 | } | |
2087 | ||
2088 | if (mtext != s) | |
2089 | free (mtext); | |
2090 | ||
d166f048 JA |
2091 | /* We may need to quote additional characters: those that readline treats |
2092 | as word breaks that are not quoted by backslash_quote. */ | |
2093 | if (rtext && cs == COMPLETE_BSQUOTE) | |
2094 | { | |
2095 | mtext = quote_word_break_chars (rtext); | |
2096 | free (rtext); | |
2097 | rtext = mtext; | |
2098 | } | |
2099 | ||
ccc6cda3 JA |
2100 | /* Leave the opening quote intact. The readline completion code takes |
2101 | care of avoiding doubled opening quotes. */ | |
2102 | rlen = strlen (rtext); | |
2103 | ret = xmalloc (rlen + 1); | |
2104 | strcpy (ret, rtext); | |
2105 | ||
2106 | /* If there are multiple matches, cut off the closing quote. */ | |
2107 | if (rtype == MULT_MATCH && cs != COMPLETE_BSQUOTE) | |
2108 | ret[rlen - 1] = '\0'; | |
2109 | free (rtext); | |
2110 | return ret; | |
2111 | } | |
2112 | ||
2113 | #endif /* READLINE */ |