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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
27 #if defined (HAVE_UNISTD_H)
39 new_word = (WORD_DESC *)xmalloc (sizeof (WORD_DESC));
40 FASTCOPY ((char *)word, (char *)new_word, sizeof (WORD_DESC));
41 new_word->word = savestring (word->word);
45 /* Copy the chain of words in LIST. Return a pointer to
51 WORD_LIST *new_list, *temp;
53 for (new_list = (WORD_LIST *)NULL; list; list = list->next)
55 temp = (WORD_LIST *)xmalloc (sizeof (WORD_LIST));
56 temp->next = new_list;
58 new_list->word = copy_word (list->word);
60 return (REVERSE_LIST (new_list, WORD_LIST *));
64 copy_case_clause (clause)
67 PATTERN_LIST *new_clause;
69 new_clause = (PATTERN_LIST *)xmalloc (sizeof (PATTERN_LIST));
70 new_clause->patterns = copy_word_list (clause->patterns);
71 new_clause->action = copy_command (clause->action);
76 copy_case_clauses (clauses)
77 PATTERN_LIST *clauses;
79 PATTERN_LIST *new_list, *new_clause;
81 for (new_list = (PATTERN_LIST *)NULL; clauses; clauses = clauses->next)
83 new_clause = copy_case_clause (clauses);
84 new_clause->next = new_list;
85 new_list = new_clause;
87 return (REVERSE_LIST (new_list, PATTERN_LIST *));
90 /* Copy a single redirect. */
92 copy_redirect (redirect)
95 REDIRECT *new_redirect;
97 new_redirect = (REDIRECT *)xmalloc (sizeof (REDIRECT));
98 FASTCOPY ((char *)redirect, (char *)new_redirect, (sizeof (REDIRECT)));
99 switch (redirect->instruction)
101 case r_reading_until:
102 case r_deblank_reading_until:
103 new_redirect->here_doc_eof = savestring (redirect->here_doc_eof);
106 case r_output_direction:
107 case r_input_direction:
108 case r_inputa_direction:
112 case r_duplicating_input_word:
113 case r_duplicating_output_word:
114 new_redirect->redirectee.filename = copy_word (redirect->redirectee.filename);
116 case r_duplicating_input:
117 case r_duplicating_output:
121 return (new_redirect);
125 copy_redirects (list)
128 REDIRECT *new_list, *temp;
130 for (new_list = (REDIRECT *)NULL; list; list = list->next)
132 temp = copy_redirect (list);
133 temp->next = new_list;
136 return (REVERSE_LIST (new_list, REDIRECT *));
140 copy_for_command (com)
145 new_for = (FOR_COM *)xmalloc (sizeof (FOR_COM));
146 new_for->flags = com->flags;
147 new_for->name = copy_word (com->name);
148 new_for->map_list = copy_word_list (com->map_list);
149 new_for->action = copy_command (com->action);
154 copy_group_command (com)
157 GROUP_COM *new_group;
159 new_group = (GROUP_COM *)xmalloc (sizeof (GROUP_COM));
160 new_group->command = copy_command (com->command);
165 copy_case_command (com)
170 new_case = (CASE_COM *)xmalloc (sizeof (CASE_COM));
171 new_case->flags = com->flags;
172 new_case->word = copy_word (com->word);
173 new_case->clauses = copy_case_clauses (com->clauses);
178 copy_while_command (com)
181 WHILE_COM *new_while;
183 new_while = (WHILE_COM *)xmalloc (sizeof (WHILE_COM));
184 new_while->flags = com->flags;
185 new_while->test = copy_command (com->test);
186 new_while->action = copy_command (com->action);
191 copy_if_command (com)
196 new_if = (IF_COM *)xmalloc (sizeof (IF_COM));
197 new_if->flags = com->flags;
198 new_if->test = copy_command (com->test);
199 new_if->true_case = copy_command (com->true_case);
200 new_if->false_case = copy_command (com->false_case);
205 copy_simple_command (com)
208 SIMPLE_COM *new_simple = (SIMPLE_COM *)xmalloc (sizeof (SIMPLE_COM));
210 new_simple->flags = com->flags;
211 new_simple->words = copy_word_list (com->words);
212 new_simple->redirects = copy_redirects (com->redirects);
213 new_simple->line = com->line;
217 static FUNCTION_DEF *
218 copy_function_def (com)
221 FUNCTION_DEF *new_def;
223 new_def = (FUNCTION_DEF *)xmalloc (sizeof (FUNCTION_DEF));
224 new_def->name = copy_word (com->name);
225 new_def->command = copy_command (com->command);
229 /* Copy the command structure in COMMAND. Return a pointer to the
230 copy. Don't you forget to dispose_command () on this pointer
233 copy_command (command)
236 COMMAND *new_command;
241 new_command = (COMMAND *)xmalloc (sizeof (COMMAND));
242 FASTCOPY ((char *)command, (char *)new_command, sizeof (COMMAND));
243 new_command->flags = command->flags;
244 new_command->line = command->line;
246 if (command->redirects)
247 new_command->redirects = copy_redirects (command->redirects);
249 switch (command->type)
252 new_command->value.For = copy_for_command (command->value.For);
255 #if defined (SELECT_COMMAND)
257 new_command->value.Select =
258 (SELECT_COM *)copy_for_command ((FOR_COM *)command->value.Select);
263 new_command->value.Group = copy_group_command (command->value.Group);
267 new_command->value.Case = copy_case_command (command->value.Case);
272 new_command->value.While = copy_while_command (command->value.While);
276 new_command->value.If = copy_if_command (command->value.If);
280 new_command->value.Simple = copy_simple_command (command->value.Simple);
285 CONNECTION *new_connection;
287 new_connection = (CONNECTION *)xmalloc (sizeof (CONNECTION));
288 new_connection->connector = command->value.Connection->connector;
289 new_connection->first = copy_command (command->value.Connection->first);
290 new_connection->second = copy_command (command->value.Connection->second);
291 new_command->value.Connection = new_connection;
295 case cm_function_def:
296 new_command->value.Function_def = copy_function_def (command->value.Function_def);
299 return (new_command);