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- /* dispose_command.c -- dispose of a COMMAND structure. */
-
- /* Copyright (C) 1987,1991 Free Software Foundation, Inc.
-
- This file is part of GNU Bash, the Bourne Again SHell.
-
- Bash is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- Bash is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
- License for more details.
-
- You should have received a copy of the GNU General Public License
- along with Bash; see the file COPYING. If not, write to the Free
- Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "shell.h"
-
- /* Dispose of the command structure passed. */
- void
- dispose_command (command)
- register COMMAND *command;
- {
- if (!command) return;
-
- if (command->redirects)
- dispose_redirects (command->redirects);
-
- switch (command->type)
- {
- case cm_for:
- {
- register FOR_COM *c = command->value.For;
- dispose_word (c->name);
- dispose_words (c->map_list);
- dispose_command (c->action);
- free (c);
- break;
- }
-
- case cm_group:
- {
- dispose_command (command->value.Group->command);
- break;
- }
-
- case cm_case:
- {
- register CASE_COM *c = command->value.Case;
- PATTERN_LIST *t, *p = c->clauses;
- dispose_word (c->word);
- while (p) {
- dispose_words (p->patterns);
- dispose_command (p->action);
- t = p;
- p = p->next;
- free (t);
- }
- break;
- }
-
- case cm_until:
- case cm_while:
- {
- register WHILE_COM *c = command->value.While;
- dispose_command (c->test);
- dispose_command (c->action);
- free (c);
- break;
- }
-
- case cm_if:
- {
- register IF_COM *c = command->value.If;
- dispose_command (c->test);
- dispose_command (c->true_case);
- dispose_command (c->false_case);
- free (c);
- break;
- }
-
- case cm_simple:
- {
- register SIMPLE_COM *c = command->value.Simple;
- dispose_words (c->words);
- dispose_redirects (c->redirects);
- free (c);
- break;
- }
-
- case cm_connection:
- {
- register CONNECTION *c = command->value.Connection;
- dispose_command (c->first);
- dispose_command (c->second);
- free (c);
- break;
- }
-
- case cm_function_def:
- {
- register FUNCTION_DEF *c = command->value.Function_def;
- dispose_word (c->name);
- dispose_command (c->command);
- free (c);
- break;
- }
-
- default:
- report_error ("Attempt to free unknown command type `%d'.\n", command->type);
- break;
- }
- free (command);
- }
-
- /* How to free a WORD_DESC. */
- dispose_word (word)
- WORD_DESC *word;
- {
- free (word->word);
- free (word);
- }
-
- /* How to get rid of a linked list of words. A WORD_LIST. */
- dispose_words (list)
- WORD_LIST *list;
- {
- WORD_LIST *t;
- while (list)
- {
- t = list;
- list = list->next;
- dispose_word (t->word);
- free (t);
- }
- }
-
- /* How to dispose of an array of pointers to char. */
- dispose_word_array (array)
- char **array;
- {
- register int count;
-
- for (count = 0; array[count]; count++)
- free (array[count]);
-
- free (array);
- }
-
- /* How to dispose of an list of redirections. A REDIRECT. */
- dispose_redirects (list)
- REDIRECT *list;
- {
- register REDIRECT *t;
-
- while (list)
- {
- t = list;
- list = list->next;
- switch (t->instruction)
- {
- case r_reading_until:
- case r_deblank_reading_until:
- free (t->here_doc_eof);
- /* ... */
- case r_output_direction:
- case r_input_direction:
- case r_inputa_direction:
- case r_appending_to:
- case r_err_and_out:
- case r_input_output:
- case r_output_force:
- case r_duplicating_input_word:
- case r_duplicating_output_word:
- dispose_word (t->redirectee.filename);
- break;
- }
- free (t);
- }
- }
-