Imported from ../bash-1.14.7.tar.gz.
This commit is contained in:
Jari Aalto
commit
726f63884d
402 changed files with 150297 additions and 0 deletions
305
copy_cmd.c
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305
copy_cmd.c
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/* copy_command.c -- copy a COMMAND structure. This is needed
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primarily for making function definitions, but I'm not sure
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that anyone else will need it. */
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/* Copyright (C) 1987,1991 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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Bash is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash; see the file COPYING. If not, write to the Free
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Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#if defined (HAVE_STRING_H)
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# include <string.h>
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#else /* !HAVE_STRING_H */
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# include <strings.h>
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#endif /* !HAVE_STRING_H */
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#include "shell.h"
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WORD_DESC *
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copy_word (word)
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WORD_DESC *word;
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{
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WORD_DESC *new_word = (WORD_DESC *)xmalloc (sizeof (WORD_DESC));
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FASTCOPY ((char *)word, (char *)new_word, sizeof (WORD_DESC));
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new_word->word = savestring (word->word);
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return (new_word);
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}
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/* Copy the chain of words in LIST. Return a pointer to
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the new chain. */
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WORD_LIST *
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copy_word_list (list)
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WORD_LIST *list;
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{
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WORD_LIST *new_list = NULL;
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while (list)
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{
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WORD_LIST *temp = (WORD_LIST *)xmalloc (sizeof (WORD_LIST));
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temp->next = new_list;
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new_list = temp;
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new_list->word = copy_word (list->word);
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list = list->next;
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}
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return (REVERSE_LIST (new_list, WORD_LIST *));
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}
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static PATTERN_LIST *
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copy_case_clause (clause)
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PATTERN_LIST *clause;
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{
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PATTERN_LIST *new_clause = (PATTERN_LIST *)xmalloc (sizeof (PATTERN_LIST));
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new_clause->patterns = copy_word_list (clause->patterns);
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new_clause->action = copy_command (clause->action);
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return (new_clause);
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}
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static PATTERN_LIST *
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copy_case_clauses (clauses)
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PATTERN_LIST *clauses;
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{
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PATTERN_LIST *new_list = (PATTERN_LIST *)NULL;
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while (clauses)
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{
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PATTERN_LIST *new_clause = copy_case_clause (clauses);
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new_clause->next = new_list;
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new_list = new_clause;
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clauses = clauses->next;
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}
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return (REVERSE_LIST (new_list, PATTERN_LIST *));
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}
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/* Copy a single redirect. */
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REDIRECT *
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copy_redirect (redirect)
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REDIRECT *redirect;
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{
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REDIRECT *new_redirect = (REDIRECT *)xmalloc (sizeof (REDIRECT));
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FASTCOPY ((char *)redirect, (char *)new_redirect, (sizeof (REDIRECT)));
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switch (redirect->instruction)
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{
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case r_reading_until:
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case r_deblank_reading_until:
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new_redirect->here_doc_eof = savestring (redirect->here_doc_eof);
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/* There is NO BREAK HERE ON PURPOSE!!!! */
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case r_appending_to:
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case r_output_direction:
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case r_input_direction:
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case r_inputa_direction:
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case r_err_and_out:
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case r_input_output:
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case r_output_force:
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case r_duplicating_input_word:
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case r_duplicating_output_word:
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new_redirect->redirectee.filename =
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copy_word (redirect->redirectee.filename);
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break;
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}
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return (new_redirect);
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}
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REDIRECT *
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copy_redirects (list)
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REDIRECT *list;
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{
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REDIRECT *new_list = NULL;
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while (list)
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{
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REDIRECT *temp = copy_redirect (list);
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temp->next = new_list;
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new_list = temp;
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list = list->next;
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}
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return (REVERSE_LIST (new_list, REDIRECT *));
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}
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static FOR_COM *
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copy_for_command (com)
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FOR_COM *com;
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{
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FOR_COM *new_for = (FOR_COM *)xmalloc (sizeof (FOR_COM));
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new_for->flags = com->flags;
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new_for->name = copy_word (com->name);
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new_for->map_list = copy_word_list (com->map_list);
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new_for->action = copy_command (com->action);
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return (new_for);
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}
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#if defined (SELECT_COMMAND)
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static SELECT_COM *
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copy_select_command (com)
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SELECT_COM *com;
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{
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SELECT_COM *new_select = (SELECT_COM *)xmalloc (sizeof (SELECT_COM));
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new_select->flags = com->flags;
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new_select->name = copy_word (com->name);
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new_select->map_list = copy_word_list (com->map_list);
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new_select->action = copy_command (com->action);
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return (new_select);
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}
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#endif /* SELECT_COMMAND */
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static GROUP_COM *
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copy_group_command (com)
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GROUP_COM *com;
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{
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GROUP_COM *new_group = (GROUP_COM *)xmalloc (sizeof (GROUP_COM));
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new_group->command = copy_command (com->command);
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return (new_group);
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}
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static CASE_COM *
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copy_case_command (com)
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CASE_COM *com;
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{
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CASE_COM *new_case = (CASE_COM *)xmalloc (sizeof (CASE_COM));
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new_case->flags = com->flags;
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new_case->word = copy_word (com->word);
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new_case->clauses = copy_case_clauses (com->clauses);
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return (new_case);
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}
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static WHILE_COM *
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copy_while_command (com)
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WHILE_COM *com;
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{
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WHILE_COM *new_while = (WHILE_COM *)xmalloc (sizeof (WHILE_COM));
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new_while->flags = com->flags;
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new_while->test = copy_command (com->test);
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new_while->action = copy_command (com->action);
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return (new_while);
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}
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static IF_COM *
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copy_if_command (com)
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IF_COM *com;
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{
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IF_COM *new_if = (IF_COM *)xmalloc (sizeof (IF_COM));
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new_if->flags = com->flags;
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new_if->test = copy_command (com->test);
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new_if->true_case = copy_command (com->true_case);
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new_if->false_case = copy_command (com->false_case);
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return (new_if);
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}
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static SIMPLE_COM *
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copy_simple_command (com)
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SIMPLE_COM *com;
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{
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SIMPLE_COM *new_simple = (SIMPLE_COM *)xmalloc (sizeof (SIMPLE_COM));
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new_simple->flags = com->flags;
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new_simple->words = copy_word_list (com->words);
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new_simple->redirects = copy_redirects (com->redirects);
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new_simple->line = com->line;
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return (new_simple);
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}
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static FUNCTION_DEF *
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copy_function_def (com)
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FUNCTION_DEF *com;
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{
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FUNCTION_DEF *new_def = (FUNCTION_DEF *)xmalloc (sizeof (FUNCTION_DEF));
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new_def->name = copy_word (com->name);
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new_def->command = copy_command (com->command);
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return (new_def);
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}
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/* Copy the command structure in COMMAND. Return a pointer to the
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copy. Don't you forget to dispose_command () on this pointer
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later! */
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COMMAND *
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copy_command (command)
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COMMAND *command;
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{
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COMMAND *new_command = (COMMAND *)NULL;
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if (command)
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{
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new_command = (COMMAND *)xmalloc (sizeof (COMMAND));
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FASTCOPY ((char *)command, (char *)new_command, sizeof (COMMAND));
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new_command->flags = command->flags;
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new_command->line = command->line;
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if (command->redirects)
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new_command->redirects = copy_redirects (command->redirects);
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switch (command->type)
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{
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case cm_for:
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new_command->value.For = copy_for_command (command->value.For);
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break;
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#if defined (SELECT_COMMAND)
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case cm_select:
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new_command->value.Select = copy_select_command (command->value.Select);
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break;
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#endif
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case cm_group:
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new_command->value.Group = copy_group_command (command->value.Group);
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break;
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case cm_case:
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new_command->value.Case = copy_case_command (command->value.Case);
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break;
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case cm_until:
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case cm_while:
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new_command->value.While = copy_while_command (command->value.While);
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break;
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case cm_if:
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new_command->value.If = copy_if_command (command->value.If);
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break;
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case cm_simple:
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new_command->value.Simple = copy_simple_command (command->value.Simple);
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break;
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case cm_connection:
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{
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CONNECTION *new_connection;
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new_connection = (CONNECTION *)xmalloc (sizeof (CONNECTION));
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new_connection->connector = command->value.Connection->connector;
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new_connection->first =
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copy_command (command->value.Connection->first);
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new_connection->second =
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copy_command (command->value.Connection->second);
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new_command->value.Connection = new_connection;
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break;
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}
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/* Pathological case. I'm not even sure that you can have a
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function definition as part of a function definition. */
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case cm_function_def:
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new_command->value.Function_def =
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copy_function_def (command->value.Function_def);
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break;
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}
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}
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return (new_command);
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}
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