primarily for making function definitions, but I'm not sure
that anyone else will need it. */
-/* Copyright (C) 1987,1991 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2009 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 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 3 of the License, 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.
+ 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. */
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
-#include <stdio.h>
+#include "config.h"
+
+#include "bashtypes.h"
-#if defined (HAVE_STRING_H)
-# include <string.h>
-#else /* !HAVE_STRING_H */
-# include <strings.h>
-#endif /* !HAVE_STRING_H */
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#include <stdio.h>
#include "shell.h"
+static PATTERN_LIST *copy_case_clause __P((PATTERN_LIST *));
+static PATTERN_LIST *copy_case_clauses __P((PATTERN_LIST *));
+static FOR_COM *copy_for_command __P((FOR_COM *));
+#if defined (ARITH_FOR_COMMAND)
+static ARITH_FOR_COM *copy_arith_for_command __P((ARITH_FOR_COM *));
+#endif
+static GROUP_COM *copy_group_command __P((GROUP_COM *));
+static SUBSHELL_COM *copy_subshell_command __P((SUBSHELL_COM *));
+static COPROC_COM *copy_coproc_command __P((COPROC_COM *));
+static CASE_COM *copy_case_command __P((CASE_COM *));
+static WHILE_COM *copy_while_command __P((WHILE_COM *));
+static IF_COM *copy_if_command __P((IF_COM *));
+#if defined (DPAREN_ARITHMETIC)
+static ARITH_COM *copy_arith_command __P((ARITH_COM *));
+#endif
+#if defined (COND_COMMAND)
+static COND_COM *copy_cond_command __P((COND_COM *));
+#endif
+static SIMPLE_COM *copy_simple_command __P((SIMPLE_COM *));
+
WORD_DESC *
-copy_word (word)
- WORD_DESC *word;
+copy_word (w)
+ WORD_DESC *w;
{
- WORD_DESC *new_word = (WORD_DESC *)xmalloc (sizeof (WORD_DESC));
- FASTCOPY ((char *)word, (char *)new_word, sizeof (WORD_DESC));
- new_word->word = savestring (word->word);
+ WORD_DESC *new_word;
+
+ new_word = make_bare_word (w->word);
+ new_word->flags = w->flags;
return (new_word);
}
-/* Copy the chain of words in LIST. Return a pointer to
+/* Copy the chain of words in LIST. Return a pointer to
the new chain. */
WORD_LIST *
copy_word_list (list)
WORD_LIST *list;
{
- WORD_LIST *new_list = NULL;
+ WORD_LIST *new_list;
+
+ for (new_list = (WORD_LIST *)NULL; list; list = list->next)
+ new_list = make_word_list (copy_word (list->word), new_list);
- while (list)
- {
- WORD_LIST *temp = (WORD_LIST *)xmalloc (sizeof (WORD_LIST));
- temp->next = new_list;
- new_list = temp;
- new_list->word = copy_word (list->word);
- list = list->next;
- }
return (REVERSE_LIST (new_list, WORD_LIST *));
}
copy_case_clause (clause)
PATTERN_LIST *clause;
{
- PATTERN_LIST *new_clause = (PATTERN_LIST *)xmalloc (sizeof (PATTERN_LIST));
+ PATTERN_LIST *new_clause;
+
+ new_clause = (PATTERN_LIST *)xmalloc (sizeof (PATTERN_LIST));
new_clause->patterns = copy_word_list (clause->patterns);
new_clause->action = copy_command (clause->action);
+ new_clause->flags = clause->flags;
return (new_clause);
}
copy_case_clauses (clauses)
PATTERN_LIST *clauses;
{
- PATTERN_LIST *new_list = (PATTERN_LIST *)NULL;
+ PATTERN_LIST *new_list, *new_clause;
- while (clauses)
+ for (new_list = (PATTERN_LIST *)NULL; clauses; clauses = clauses->next)
{
- PATTERN_LIST *new_clause = copy_case_clause (clauses);
+ new_clause = copy_case_clause (clauses);
new_clause->next = new_list;
new_list = new_clause;
- clauses = clauses->next;
}
return (REVERSE_LIST (new_list, PATTERN_LIST *));
}
copy_redirect (redirect)
REDIRECT *redirect;
{
- REDIRECT *new_redirect = (REDIRECT *)xmalloc (sizeof (REDIRECT));
+ REDIRECT *new_redirect;
+
+ new_redirect = (REDIRECT *)xmalloc (sizeof (REDIRECT));
+#if 0
FASTCOPY ((char *)redirect, (char *)new_redirect, (sizeof (REDIRECT)));
+#else
+ *new_redirect = *redirect; /* let the compiler do the fast structure copy */
+#endif
+
+ if (redirect->rflags & REDIR_VARASSIGN)
+ new_redirect->redirector.filename = copy_word (redirect->redirector.filename);
+
switch (redirect->instruction)
{
case r_reading_until:
case r_deblank_reading_until:
- new_redirect->here_doc_eof = savestring (redirect->here_doc_eof);
- /* There is NO BREAK HERE ON PURPOSE!!!! */
+ new_redirect->here_doc_eof = redirect->here_doc_eof ? savestring (redirect->here_doc_eof) : 0;
+ /*FALLTHROUGH*/
+ case r_reading_string:
case r_appending_to:
case r_output_direction:
case r_input_direction:
case r_inputa_direction:
case r_err_and_out:
+ case r_append_err_and_out:
case r_input_output:
case r_output_force:
case r_duplicating_input_word:
case r_duplicating_output_word:
- new_redirect->redirectee.filename =
- copy_word (redirect->redirectee.filename);
+ case r_move_input_word:
+ case r_move_output_word:
+ new_redirect->redirectee.filename = copy_word (redirect->redirectee.filename);
+ break;
+ case r_duplicating_input:
+ case r_duplicating_output:
+ case r_move_input:
+ case r_move_output:
+ case r_close_this:
break;
}
return (new_redirect);
}
-
+
REDIRECT *
copy_redirects (list)
REDIRECT *list;
{
- REDIRECT *new_list = NULL;
+ REDIRECT *new_list, *temp;
- while (list)
+ for (new_list = (REDIRECT *)NULL; list; list = list->next)
{
- REDIRECT *temp = copy_redirect (list);
+ temp = copy_redirect (list);
temp->next = new_list;
new_list = temp;
- list = list->next;
}
return (REVERSE_LIST (new_list, REDIRECT *));
}
-
+
static FOR_COM *
copy_for_command (com)
FOR_COM *com;
{
- FOR_COM *new_for = (FOR_COM *)xmalloc (sizeof (FOR_COM));
+ FOR_COM *new_for;
+
+ new_for = (FOR_COM *)xmalloc (sizeof (FOR_COM));
new_for->flags = com->flags;
+ new_for->line = com->line;
new_for->name = copy_word (com->name);
new_for->map_list = copy_word_list (com->map_list);
new_for->action = copy_command (com->action);
return (new_for);
}
-#if defined (SELECT_COMMAND)
-static SELECT_COM *
-copy_select_command (com)
- SELECT_COM *com;
+#if defined (ARITH_FOR_COMMAND)
+static ARITH_FOR_COM *
+copy_arith_for_command (com)
+ ARITH_FOR_COM *com;
{
- SELECT_COM *new_select = (SELECT_COM *)xmalloc (sizeof (SELECT_COM));
- new_select->flags = com->flags;
- new_select->name = copy_word (com->name);
- new_select->map_list = copy_word_list (com->map_list);
- new_select->action = copy_command (com->action);
- return (new_select);
+ ARITH_FOR_COM *new_arith_for;
+
+ new_arith_for = (ARITH_FOR_COM *)xmalloc (sizeof (ARITH_FOR_COM));
+ new_arith_for->flags = com->flags;
+ new_arith_for->line = com->line;
+ new_arith_for->init = copy_word_list (com->init);
+ new_arith_for->test = copy_word_list (com->test);
+ new_arith_for->step = copy_word_list (com->step);
+ new_arith_for->action = copy_command (com->action);
+ return (new_arith_for);
}
-#endif /* SELECT_COMMAND */
+#endif /* ARITH_FOR_COMMAND */
static GROUP_COM *
copy_group_command (com)
GROUP_COM *com;
{
- GROUP_COM *new_group = (GROUP_COM *)xmalloc (sizeof (GROUP_COM));
+ GROUP_COM *new_group;
+ new_group = (GROUP_COM *)xmalloc (sizeof (GROUP_COM));
new_group->command = copy_command (com->command);
return (new_group);
}
+static SUBSHELL_COM *
+copy_subshell_command (com)
+ SUBSHELL_COM *com;
+{
+ SUBSHELL_COM *new_subshell;
+
+ new_subshell = (SUBSHELL_COM *)xmalloc (sizeof (SUBSHELL_COM));
+ new_subshell->command = copy_command (com->command);
+ new_subshell->flags = com->flags;
+ return (new_subshell);
+}
+
+static COPROC_COM *
+copy_coproc_command (com)
+ COPROC_COM *com;
+{
+ COPROC_COM *new_coproc;
+
+ new_coproc = (COPROC_COM *)xmalloc (sizeof (COPROC_COM));
+ new_coproc->name = savestring (com->name);
+ new_coproc->command = copy_command (com->command);
+ new_coproc->flags = com->flags;
+ return (new_coproc);
+}
+
static CASE_COM *
copy_case_command (com)
CASE_COM *com;
{
- CASE_COM *new_case = (CASE_COM *)xmalloc (sizeof (CASE_COM));
+ CASE_COM *new_case;
+ new_case = (CASE_COM *)xmalloc (sizeof (CASE_COM));
new_case->flags = com->flags;
+ new_case->line = com->line;
new_case->word = copy_word (com->word);
new_case->clauses = copy_case_clauses (com->clauses);
return (new_case);
copy_while_command (com)
WHILE_COM *com;
{
- WHILE_COM *new_while = (WHILE_COM *)xmalloc (sizeof (WHILE_COM));
+ WHILE_COM *new_while;
+ new_while = (WHILE_COM *)xmalloc (sizeof (WHILE_COM));
new_while->flags = com->flags;
new_while->test = copy_command (com->test);
new_while->action = copy_command (com->action);
copy_if_command (com)
IF_COM *com;
{
- IF_COM *new_if = (IF_COM *)xmalloc (sizeof (IF_COM));
+ IF_COM *new_if;
+ new_if = (IF_COM *)xmalloc (sizeof (IF_COM));
new_if->flags = com->flags;
new_if->test = copy_command (com->test);
new_if->true_case = copy_command (com->true_case);
- new_if->false_case = copy_command (com->false_case);
+ new_if->false_case = com->false_case ? copy_command (com->false_case) : com->false_case;
return (new_if);
}
+#if defined (DPAREN_ARITHMETIC)
+static ARITH_COM *
+copy_arith_command (com)
+ ARITH_COM *com;
+{
+ ARITH_COM *new_arith;
+
+ new_arith = (ARITH_COM *)xmalloc (sizeof (ARITH_COM));
+ new_arith->flags = com->flags;
+ new_arith->exp = copy_word_list (com->exp);
+ new_arith->line = com->line;
+
+ return (new_arith);
+}
+#endif
+
+#if defined (COND_COMMAND)
+static COND_COM *
+copy_cond_command (com)
+ COND_COM *com;
+{
+ COND_COM *new_cond;
+
+ new_cond = (COND_COM *)xmalloc (sizeof (COND_COM));
+ new_cond->flags = com->flags;
+ new_cond->line = com->line;
+ new_cond->type = com->type;
+ new_cond->op = com->op ? copy_word (com->op) : com->op;
+ new_cond->left = com->left ? copy_cond_command (com->left) : (COND_COM *)NULL;
+ new_cond->right = com->right ? copy_cond_command (com->right) : (COND_COM *)NULL;
+
+ return (new_cond);
+}
+#endif
+
static SIMPLE_COM *
copy_simple_command (com)
SIMPLE_COM *com;
{
- SIMPLE_COM *new_simple = (SIMPLE_COM *)xmalloc (sizeof (SIMPLE_COM));
+ SIMPLE_COM *new_simple;
+ new_simple = (SIMPLE_COM *)xmalloc (sizeof (SIMPLE_COM));
new_simple->flags = com->flags;
new_simple->words = copy_word_list (com->words);
- new_simple->redirects = copy_redirects (com->redirects);
+ new_simple->redirects = com->redirects ? copy_redirects (com->redirects) : (REDIRECT *)NULL;
new_simple->line = com->line;
return (new_simple);
}
-static FUNCTION_DEF *
+FUNCTION_DEF *
+copy_function_def_contents (old, new_def)
+ FUNCTION_DEF *old, *new_def;
+{
+ new_def->name = copy_word (old->name);
+ new_def->command = old->command ? copy_command (old->command) : old->command;
+ new_def->flags = old->flags;
+ new_def->line = old->line;
+ new_def->source_file = old->source_file ? savestring (old->source_file) : old->source_file;
+ return (new_def);
+}
+
+FUNCTION_DEF *
copy_function_def (com)
FUNCTION_DEF *com;
{
- FUNCTION_DEF *new_def = (FUNCTION_DEF *)xmalloc (sizeof (FUNCTION_DEF));
+ FUNCTION_DEF *new_def;
- new_def->name = copy_word (com->name);
- new_def->command = copy_command (com->command);
+ new_def = (FUNCTION_DEF *)xmalloc (sizeof (FUNCTION_DEF));
+ new_def = copy_function_def_contents (com, new_def);
return (new_def);
}
copy_command (command)
COMMAND *command;
{
- COMMAND *new_command = (COMMAND *)NULL;
+ COMMAND *new_command;
- if (command)
- {
- new_command = (COMMAND *)xmalloc (sizeof (COMMAND));
- FASTCOPY ((char *)command, (char *)new_command, sizeof (COMMAND));
- new_command->flags = command->flags;
- new_command->line = command->line;
+ if (command == NULL)
+ return (command);
- if (command->redirects)
- new_command->redirects = copy_redirects (command->redirects);
+ new_command = (COMMAND *)xmalloc (sizeof (COMMAND));
+ FASTCOPY ((char *)command, (char *)new_command, sizeof (COMMAND));
+ new_command->flags = command->flags;
+ new_command->line = command->line;
- switch (command->type)
- {
- case cm_for:
- new_command->value.For = copy_for_command (command->value.For);
- break;
+ if (command->redirects)
+ new_command->redirects = copy_redirects (command->redirects);
+
+ switch (command->type)
+ {
+ case cm_for:
+ new_command->value.For = copy_for_command (command->value.For);
+ break;
+
+#if defined (ARITH_FOR_COMMAND)
+ case cm_arith_for:
+ new_command->value.ArithFor = copy_arith_for_command (command->value.ArithFor);
+ break;
+#endif
#if defined (SELECT_COMMAND)
- case cm_select:
- new_command->value.Select = copy_select_command (command->value.Select);
- break;
+ case cm_select:
+ new_command->value.Select =
+ (SELECT_COM *)copy_for_command ((FOR_COM *)command->value.Select);
+ break;
#endif
- case cm_group:
- new_command->value.Group = copy_group_command (command->value.Group);
- break;
+ case cm_group:
+ new_command->value.Group = copy_group_command (command->value.Group);
+ break;
- case cm_case:
- new_command->value.Case = copy_case_command (command->value.Case);
- break;
-
- case cm_until:
- case cm_while:
- new_command->value.While = copy_while_command (command->value.While);
- break;
-
- case cm_if:
- new_command->value.If = copy_if_command (command->value.If);
- break;
-
- case cm_simple:
- new_command->value.Simple = copy_simple_command (command->value.Simple);
- break;
-
- case cm_connection:
- {
- CONNECTION *new_connection;
-
- new_connection = (CONNECTION *)xmalloc (sizeof (CONNECTION));
- new_connection->connector = command->value.Connection->connector;
- new_connection->first =
- copy_command (command->value.Connection->first);
- new_connection->second =
- copy_command (command->value.Connection->second);
- new_command->value.Connection = new_connection;
- break;
- }
-
- /* Pathological case. I'm not even sure that you can have a
- function definition as part of a function definition. */
- case cm_function_def:
- new_command->value.Function_def =
- copy_function_def (command->value.Function_def);
+ case cm_subshell:
+ new_command->value.Subshell = copy_subshell_command (command->value.Subshell);
+ break;
+
+ case cm_coproc:
+ new_command->value.Coproc = copy_coproc_command (command->value.Coproc);
+ break;
+
+ case cm_case:
+ new_command->value.Case = copy_case_command (command->value.Case);
+ break;
+
+ case cm_until:
+ case cm_while:
+ new_command->value.While = copy_while_command (command->value.While);
+ break;
+
+ case cm_if:
+ new_command->value.If = copy_if_command (command->value.If);
+ break;
+
+#if defined (DPAREN_ARITHMETIC)
+ case cm_arith:
+ new_command->value.Arith = copy_arith_command (command->value.Arith);
+ break;
+#endif
+
+#if defined (COND_COMMAND)
+ case cm_cond:
+ new_command->value.Cond = copy_cond_command (command->value.Cond);
+ break;
+#endif
+
+ case cm_simple:
+ new_command->value.Simple = copy_simple_command (command->value.Simple);
+ break;
+
+ case cm_connection:
+ {
+ CONNECTION *new_connection;
+
+ new_connection = (CONNECTION *)xmalloc (sizeof (CONNECTION));
+ new_connection->connector = command->value.Connection->connector;
+ new_connection->first = copy_command (command->value.Connection->first);
+ new_connection->second = copy_command (command->value.Connection->second);
+ new_command->value.Connection = new_connection;
break;
}
+
+ case cm_function_def:
+ new_command->value.Function_def = copy_function_def (command->value.Function_def);
+ break;
}
return (new_command);
}
projects / platform / upstream / bash.git / blobdiff