]>
Commit | Line | Data |
---|---|---|
726f6388 JA |
1 | /* dispose_command.c -- dispose of a COMMAND structure. */ |
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 | ||
cce855bc JA |
23 | #include "bashtypes.h" |
24 | ||
ccc6cda3 JA |
25 | #if defined (HAVE_UNISTD_H) |
26 | # include <unistd.h> | |
27 | #endif | |
28 | ||
29 | #include "bashansi.h" | |
726f6388 JA |
30 | #include "shell.h" |
31 | ||
7117c2d2 JA |
32 | extern sh_obj_cache_t wdcache, wlcache; |
33 | ||
726f6388 JA |
34 | /* Dispose of the command structure passed. */ |
35 | void | |
36 | dispose_command (command) | |
37 | COMMAND *command; | |
38 | { | |
ccc6cda3 JA |
39 | if (command == 0) |
40 | return; | |
726f6388 JA |
41 | |
42 | if (command->redirects) | |
43 | dispose_redirects (command->redirects); | |
44 | ||
45 | switch (command->type) | |
46 | { | |
47 | case cm_for: | |
726f6388 JA |
48 | #if defined (SELECT_COMMAND) |
49 | case cm_select: | |
ccc6cda3 | 50 | #endif |
726f6388 | 51 | { |
ccc6cda3 JA |
52 | register FOR_COM *c; |
53 | #if defined (SELECT_COMMAND) | |
54 | if (command->type == cm_select) | |
55 | c = (FOR_COM *)command->value.Select; | |
56 | else | |
57 | #endif | |
58 | c = command->value.For; | |
726f6388 JA |
59 | dispose_word (c->name); |
60 | dispose_words (c->map_list); | |
61 | dispose_command (c->action); | |
62 | free (c); | |
63 | break; | |
64 | } | |
ccc6cda3 | 65 | |
bb70624e JA |
66 | #if defined (ARITH_FOR_COMMAND) |
67 | case cm_arith_for: | |
68 | { | |
69 | register ARITH_FOR_COM *c; | |
70 | ||
71 | c = command->value.ArithFor; | |
72 | dispose_words (c->init); | |
73 | dispose_words (c->test); | |
74 | dispose_words (c->step); | |
75 | dispose_command (c->action); | |
76 | free (c); | |
77 | break; | |
78 | } | |
79 | #endif /* ARITH_FOR_COMMAND */ | |
80 | ||
726f6388 JA |
81 | case cm_group: |
82 | { | |
83 | dispose_command (command->value.Group->command); | |
84 | free (command->value.Group); | |
85 | break; | |
86 | } | |
87 | ||
bb70624e JA |
88 | case cm_subshell: |
89 | { | |
90 | dispose_command (command->value.Subshell->command); | |
91 | free (command->value.Subshell); | |
92 | break; | |
93 | } | |
94 | ||
726f6388 JA |
95 | case cm_case: |
96 | { | |
ccc6cda3 JA |
97 | register CASE_COM *c; |
98 | PATTERN_LIST *t, *p; | |
726f6388 | 99 | |
ccc6cda3 | 100 | c = command->value.Case; |
726f6388 JA |
101 | dispose_word (c->word); |
102 | ||
ccc6cda3 | 103 | for (p = c->clauses; p; ) |
726f6388 JA |
104 | { |
105 | dispose_words (p->patterns); | |
106 | dispose_command (p->action); | |
107 | t = p; | |
108 | p = p->next; | |
109 | free (t); | |
110 | } | |
111 | free (c); | |
112 | break; | |
113 | } | |
114 | ||
115 | case cm_until: | |
116 | case cm_while: | |
117 | { | |
ccc6cda3 | 118 | register WHILE_COM *c; |
726f6388 | 119 | |
ccc6cda3 | 120 | c = command->value.While; |
726f6388 JA |
121 | dispose_command (c->test); |
122 | dispose_command (c->action); | |
123 | free (c); | |
124 | break; | |
125 | } | |
126 | ||
127 | case cm_if: | |
128 | { | |
ccc6cda3 JA |
129 | register IF_COM *c; |
130 | ||
131 | c = command->value.If; | |
726f6388 JA |
132 | dispose_command (c->test); |
133 | dispose_command (c->true_case); | |
134 | dispose_command (c->false_case); | |
135 | free (c); | |
136 | break; | |
137 | } | |
138 | ||
139 | case cm_simple: | |
140 | { | |
ccc6cda3 JA |
141 | register SIMPLE_COM *c; |
142 | ||
143 | c = command->value.Simple; | |
726f6388 JA |
144 | dispose_words (c->words); |
145 | dispose_redirects (c->redirects); | |
146 | free (c); | |
147 | break; | |
148 | } | |
149 | ||
150 | case cm_connection: | |
151 | { | |
ccc6cda3 JA |
152 | register CONNECTION *c; |
153 | ||
154 | c = command->value.Connection; | |
726f6388 JA |
155 | dispose_command (c->first); |
156 | dispose_command (c->second); | |
157 | free (c); | |
158 | break; | |
159 | } | |
160 | ||
cce855bc JA |
161 | #if defined (DPAREN_ARITHMETIC) |
162 | case cm_arith: | |
163 | { | |
164 | register ARITH_COM *c; | |
165 | ||
166 | c = command->value.Arith; | |
167 | dispose_words (c->exp); | |
168 | free (c); | |
169 | break; | |
170 | } | |
171 | #endif /* DPAREN_ARITHMETIC */ | |
172 | ||
173 | #if defined (COND_COMMAND) | |
174 | case cm_cond: | |
175 | { | |
176 | register COND_COM *c; | |
177 | ||
178 | c = command->value.Cond; | |
179 | dispose_cond_node (c); | |
180 | break; | |
181 | } | |
182 | #endif /* COND_COMMAND */ | |
183 | ||
726f6388 JA |
184 | case cm_function_def: |
185 | { | |
ccc6cda3 JA |
186 | register FUNCTION_DEF *c; |
187 | ||
188 | c = command->value.Function_def; | |
b80f6443 | 189 | dispose_function_def (c); |
726f6388 JA |
190 | break; |
191 | } | |
192 | ||
193 | default: | |
b72432fd | 194 | command_error ("dispose_command", CMDERR_BADTYPE, command->type, 0); |
726f6388 JA |
195 | break; |
196 | } | |
197 | free (command); | |
198 | } | |
199 | ||
cce855bc JA |
200 | #if defined (COND_COMMAND) |
201 | /* How to free a node in a conditional command. */ | |
202 | void | |
203 | dispose_cond_node (cond) | |
204 | COND_COM *cond; | |
205 | { | |
206 | if (cond) | |
207 | { | |
208 | if (cond->left) | |
209 | dispose_cond_node (cond->left); | |
210 | if (cond->right) | |
211 | dispose_cond_node (cond->right); | |
212 | if (cond->op) | |
213 | dispose_word (cond->op); | |
214 | free (cond); | |
215 | } | |
216 | } | |
217 | #endif /* COND_COMMAND */ | |
218 | ||
b80f6443 JA |
219 | void |
220 | dispose_function_def_contents (c) | |
221 | FUNCTION_DEF *c; | |
222 | { | |
223 | dispose_word (c->name); | |
224 | dispose_command (c->command); | |
225 | FREE (c->source_file); | |
226 | } | |
227 | ||
228 | void | |
229 | dispose_function_def (c) | |
230 | FUNCTION_DEF *c; | |
231 | { | |
232 | dispose_function_def_contents (c); | |
233 | free (c); | |
234 | } | |
235 | ||
726f6388 JA |
236 | /* How to free a WORD_DESC. */ |
237 | void | |
cce855bc JA |
238 | dispose_word (w) |
239 | WORD_DESC *w; | |
726f6388 | 240 | { |
cce855bc | 241 | FREE (w->word); |
7117c2d2 | 242 | #if 0 |
cce855bc | 243 | free (w); |
7117c2d2 JA |
244 | #else |
245 | ocache_free (wdcache, WORD_DESC, w); | |
246 | #endif | |
726f6388 JA |
247 | } |
248 | ||
249 | /* How to get rid of a linked list of words. A WORD_LIST. */ | |
250 | void | |
251 | dispose_words (list) | |
252 | WORD_LIST *list; | |
253 | { | |
254 | WORD_LIST *t; | |
ccc6cda3 | 255 | |
726f6388 JA |
256 | while (list) |
257 | { | |
258 | t = list; | |
259 | list = list->next; | |
260 | dispose_word (t->word); | |
7117c2d2 | 261 | #if 0 |
726f6388 | 262 | free (t); |
7117c2d2 JA |
263 | #else |
264 | ocache_free (wlcache, WORD_LIST, t); | |
265 | #endif | |
726f6388 JA |
266 | } |
267 | } | |
268 | ||
d166f048 JA |
269 | #ifdef INCLUDE_UNUSED |
270 | /* How to dispose of an array of pointers to char. This is identical to | |
271 | free_array in stringlib.c. */ | |
726f6388 JA |
272 | void |
273 | dispose_word_array (array) | |
274 | char **array; | |
275 | { | |
276 | register int count; | |
277 | ||
d166f048 JA |
278 | if (array == 0) |
279 | return; | |
280 | ||
726f6388 JA |
281 | for (count = 0; array[count]; count++) |
282 | free (array[count]); | |
283 | ||
284 | free (array); | |
285 | } | |
d166f048 | 286 | #endif |
726f6388 JA |
287 | |
288 | /* How to dispose of an list of redirections. A REDIRECT. */ | |
289 | void | |
290 | dispose_redirects (list) | |
291 | REDIRECT *list; | |
292 | { | |
293 | register REDIRECT *t; | |
294 | ||
295 | while (list) | |
296 | { | |
297 | t = list; | |
298 | list = list->next; | |
299 | switch (t->instruction) | |
300 | { | |
301 | case r_reading_until: | |
302 | case r_deblank_reading_until: | |
303 | free (t->here_doc_eof); | |
ccc6cda3 | 304 | /*FALLTHROUGH*/ |
7117c2d2 | 305 | case r_reading_string: |
726f6388 JA |
306 | case r_output_direction: |
307 | case r_input_direction: | |
308 | case r_inputa_direction: | |
309 | case r_appending_to: | |
310 | case r_err_and_out: | |
311 | case r_input_output: | |
312 | case r_output_force: | |
313 | case r_duplicating_input_word: | |
314 | case r_duplicating_output_word: | |
7117c2d2 JA |
315 | case r_move_input_word: |
316 | case r_move_output_word: | |
726f6388 | 317 | dispose_word (t->redirectee.filename); |
ccc6cda3 JA |
318 | /* FALLTHROUGH */ |
319 | default: | |
726f6388 JA |
320 | break; |
321 | } | |
322 | free (t); | |
323 | } | |
324 | } |