1 /* copy_command.c -- copy a COMMAND structure. This is needed
2 primarily for making function definitions, but I'm not sure
3 that anyone else will need it. */
5 /* Copyright (C) 1987,1991 Free Software Foundation, Inc.
7 This file is part of GNU Bash, the Bourne Again SHell.
9 Bash is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 Bash is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
17 License for more details.
19 You should have received a copy of the GNU General Public License
20 along with Bash; see the file COPYING. If not, write to the Free
21 Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
25 #include "bashtypes.h"
27 #if defined (HAVE_UNISTD_H)
41 new_word = (WORD_DESC *)xmalloc (sizeof (WORD_DESC));
42 FASTCOPY ((char *)w, (char *)new_word, sizeof (WORD_DESC));
43 new_word->word = savestring (w->word);
47 /* Copy the chain of words in LIST. Return a pointer to
53 WORD_LIST *new_list, *temp;
55 for (new_list = (WORD_LIST *)NULL; list; list = list->next)
57 temp = (WORD_LIST *)xmalloc (sizeof (WORD_LIST));
58 temp->next = new_list;
60 new_list->word = copy_word (list->word);
62 return (REVERSE_LIST (new_list, WORD_LIST *));
66 copy_case_clause (clause)
69 PATTERN_LIST *new_clause;
71 new_clause = (PATTERN_LIST *)xmalloc (sizeof (PATTERN_LIST));
72 new_clause->patterns = copy_word_list (clause->patterns);
73 new_clause->action = copy_command (clause->action);
78 copy_case_clauses (clauses)
79 PATTERN_LIST *clauses;
81 PATTERN_LIST *new_list, *new_clause;
83 for (new_list = (PATTERN_LIST *)NULL; clauses; clauses = clauses->next)
85 new_clause = copy_case_clause (clauses);
86 new_clause->next = new_list;
87 new_list = new_clause;
89 return (REVERSE_LIST (new_list, PATTERN_LIST *));
92 /* Copy a single redirect. */
94 copy_redirect (redirect)
97 REDIRECT *new_redirect;
99 new_redirect = (REDIRECT *)xmalloc (sizeof (REDIRECT));
100 FASTCOPY ((char *)redirect, (char *)new_redirect, (sizeof (REDIRECT)));
101 switch (redirect->instruction)
103 case r_reading_until:
104 case r_deblank_reading_until:
105 new_redirect->here_doc_eof = savestring (redirect->here_doc_eof);
108 case r_output_direction:
109 case r_input_direction:
110 case r_inputa_direction:
114 case r_duplicating_input_word:
115 case r_duplicating_output_word:
116 new_redirect->redirectee.filename = copy_word (redirect->redirectee.filename);
118 case r_duplicating_input:
119 case r_duplicating_output:
123 return (new_redirect);
127 copy_redirects (list)
130 REDIRECT *new_list, *temp;
132 for (new_list = (REDIRECT *)NULL; list; list = list->next)
134 temp = copy_redirect (list);
135 temp->next = new_list;
138 return (REVERSE_LIST (new_list, REDIRECT *));
142 copy_for_command (com)
147 new_for = (FOR_COM *)xmalloc (sizeof (FOR_COM));
148 new_for->flags = com->flags;
149 new_for->name = copy_word (com->name);
150 new_for->map_list = copy_word_list (com->map_list);
151 new_for->action = copy_command (com->action);
155 #if defined (ARITH_FOR_COMMAND)
156 static ARITH_FOR_COM *
157 copy_arith_for_command (com)
160 ARITH_FOR_COM *new_arith_for;
162 new_arith_for = (ARITH_FOR_COM *)xmalloc (sizeof (ARITH_FOR_COM));
163 new_arith_for->flags = com->flags;
164 new_arith_for->line = com->line;
165 new_arith_for->init = copy_word_list (com->init);
166 new_arith_for->test = copy_word_list (com->test);
167 new_arith_for->step = copy_word_list (com->step);
168 new_arith_for->action = copy_command (com->action);
169 return (new_arith_for);
171 #endif /* ARITH_FOR_COMMAND */
174 copy_group_command (com)
177 GROUP_COM *new_group;
179 new_group = (GROUP_COM *)xmalloc (sizeof (GROUP_COM));
180 new_group->command = copy_command (com->command);
184 static SUBSHELL_COM *
185 copy_subshell_command (com)
188 SUBSHELL_COM *new_subshell;
190 new_subshell = (SUBSHELL_COM *)xmalloc (sizeof (SUBSHELL_COM));
191 new_subshell->command = copy_command (com->command);
192 new_subshell->flags = com->flags;
193 return (new_subshell);
197 copy_case_command (com)
202 new_case = (CASE_COM *)xmalloc (sizeof (CASE_COM));
203 new_case->flags = com->flags;
204 new_case->word = copy_word (com->word);
205 new_case->clauses = copy_case_clauses (com->clauses);
210 copy_while_command (com)
213 WHILE_COM *new_while;
215 new_while = (WHILE_COM *)xmalloc (sizeof (WHILE_COM));
216 new_while->flags = com->flags;
217 new_while->test = copy_command (com->test);
218 new_while->action = copy_command (com->action);
223 copy_if_command (com)
228 new_if = (IF_COM *)xmalloc (sizeof (IF_COM));
229 new_if->flags = com->flags;
230 new_if->test = copy_command (com->test);
231 new_if->true_case = copy_command (com->true_case);
232 new_if->false_case = copy_command (com->false_case);
236 #if defined (DPAREN_ARITHMETIC)
238 copy_arith_command (com)
241 ARITH_COM *new_arith;
243 new_arith = (ARITH_COM *)xmalloc (sizeof (ARITH_COM));
244 new_arith->flags = com->flags;
245 new_arith->exp = copy_word_list (com->exp);
246 new_arith->line = com->line;
252 #if defined (COND_COMMAND)
254 copy_cond_command (com)
259 new_cond = (COND_COM *)xmalloc (sizeof (COND_COM));
260 new_cond->flags = com->flags;
261 new_cond->line = com->line;
262 new_cond->type = com->type;
263 new_cond->op = com->op ? copy_word (com->op) : com->op;
264 new_cond->left = com->left ? copy_cond_command (com->left) : (COND_COM *)NULL;
265 new_cond->right = com->right ? copy_cond_command (com->right) : (COND_COM *)NULL;
272 copy_simple_command (com)
275 SIMPLE_COM *new_simple;
277 new_simple = (SIMPLE_COM *)xmalloc (sizeof (SIMPLE_COM));
278 new_simple->flags = com->flags;
279 new_simple->words = copy_word_list (com->words);
280 new_simple->redirects = copy_redirects (com->redirects);
281 new_simple->line = com->line;
285 static FUNCTION_DEF *
286 copy_function_def (com)
289 FUNCTION_DEF *new_def;
291 new_def = (FUNCTION_DEF *)xmalloc (sizeof (FUNCTION_DEF));
292 new_def->name = copy_word (com->name);
293 new_def->command = copy_command (com->command);
297 /* Copy the command structure in COMMAND. Return a pointer to the
298 copy. Don't you forget to dispose_command () on this pointer
301 copy_command (command)
304 COMMAND *new_command;
309 new_command = (COMMAND *)xmalloc (sizeof (COMMAND));
310 FASTCOPY ((char *)command, (char *)new_command, sizeof (COMMAND));
311 new_command->flags = command->flags;
312 new_command->line = command->line;
314 if (command->redirects)
315 new_command->redirects = copy_redirects (command->redirects);
317 switch (command->type)
320 new_command->value.For = copy_for_command (command->value.For);
323 #if defined (ARITH_FOR_COMMAND)
325 new_command->value.ArithFor = copy_arith_for_command (command->value.ArithFor);
329 #if defined (SELECT_COMMAND)
331 new_command->value.Select =
332 (SELECT_COM *)copy_for_command ((FOR_COM *)command->value.Select);
337 new_command->value.Group = copy_group_command (command->value.Group);
341 new_command->value.Subshell = copy_subshell_command (command->value.Subshell);
345 new_command->value.Case = copy_case_command (command->value.Case);
350 new_command->value.While = copy_while_command (command->value.While);
354 new_command->value.If = copy_if_command (command->value.If);
357 #if defined (DPAREN_ARITHMETIC)
359 new_command->value.Arith = copy_arith_command (command->value.Arith);
363 #if defined (COND_COMMAND)
365 new_command->value.Cond = copy_cond_command (command->value.Cond);
370 new_command->value.Simple = copy_simple_command (command->value.Simple);
375 CONNECTION *new_connection;
377 new_connection = (CONNECTION *)xmalloc (sizeof (CONNECTION));
378 new_connection->connector = command->value.Connection->connector;
379 new_connection->first = copy_command (command->value.Connection->first);
380 new_connection->second = copy_command (command->value.Connection->second);
381 new_command->value.Connection = new_connection;
385 case cm_function_def:
386 new_command->value.Function_def = copy_function_def (command->value.Function_def);
389 return (new_command);