Adding upstream version 5.2.15.upstream/5.2.15upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 459 insertions, 0 deletions

diff --git a/copy_cmd.c b/copy_cmd.c
new file mode 100644
index 0000000..758ff23
--- /dev/null
+++ b/copy_cmd.c
@@ -0,0 +1,459 @@
+/* copy_command.c -- copy a COMMAND structure.  This is needed
+   primarily for making function definitions, but I'm not sure
+   that anyone else will need it.  */
+
+/* Copyright (C) 1987-2020 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 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.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "config.h"
+
+#include "bashtypes.h"
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+#include <stdio.h>
+
+#include "shell.h"
+
+static PATTERN_LIST *copy_case_clause PARAMS((PATTERN_LIST *));
+static PATTERN_LIST *copy_case_clauses PARAMS((PATTERN_LIST *));
+static FOR_COM *copy_for_command PARAMS((FOR_COM *));
+#if defined (ARITH_FOR_COMMAND)
+static ARITH_FOR_COM *copy_arith_for_command PARAMS((ARITH_FOR_COM *));
+#endif
+static GROUP_COM *copy_group_command PARAMS((GROUP_COM *));
+static SUBSHELL_COM *copy_subshell_command PARAMS((SUBSHELL_COM *));
+static COPROC_COM *copy_coproc_command PARAMS((COPROC_COM *));
+static CASE_COM *copy_case_command PARAMS((CASE_COM *));
+static WHILE_COM *copy_while_command PARAMS((WHILE_COM *));
+static IF_COM *copy_if_command PARAMS((IF_COM *));
+#if defined (DPAREN_ARITHMETIC)
+static ARITH_COM *copy_arith_command PARAMS((ARITH_COM *));
+#endif
+#if defined (COND_COMMAND)
+static COND_COM *copy_cond_command PARAMS((COND_COM *));
+#endif
+static SIMPLE_COM *copy_simple_command PARAMS((SIMPLE_COM *));
+
+WORD_DESC *
+copy_word (w)
+     WORD_DESC *w;
+{
+  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
+   the new chain. */
+WORD_LIST *
+copy_word_list (list)
+     WORD_LIST *list;
+{
+  WORD_LIST *new_list, *tl;
+
+  for (new_list = tl = (WORD_LIST *)NULL; list; list = list->next)
+    {
+      if (new_list == 0)
+	new_list = tl = make_word_list (copy_word (list->word), new_list);
+      else
+	{
+	  tl->next = make_word_list (copy_word (list->word), (WORD_LIST *)NULL);
+	  tl = tl->next;
+	}
+    }
+
+  return (new_list);
+}
+
+static PATTERN_LIST *
+copy_case_clause (clause)
+     PATTERN_LIST *clause;
+{
+  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);
+}
+
+static PATTERN_LIST *
+copy_case_clauses (clauses)
+     PATTERN_LIST *clauses;
+{
+  PATTERN_LIST *new_list, *new_clause;
+
+  for (new_list = (PATTERN_LIST *)NULL; clauses; clauses = clauses->next)
+    {
+      new_clause = copy_case_clause (clauses);
+      new_clause->next = new_list;
+      new_list = new_clause;
+    }
+  return (REVERSE_LIST (new_list, PATTERN_LIST *));
+}
+
+/* Copy a single redirect. */
+REDIRECT *
+copy_redirect (redirect)
+     REDIRECT *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 = 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:
+    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, *temp;
+
+  for (new_list = (REDIRECT *)NULL; list; list = list->next)
+    {
+      temp = copy_redirect (list);
+      temp->next = new_list;
+      new_list = temp;
+    }
+  return (REVERSE_LIST (new_list, REDIRECT *));
+}
+
+static FOR_COM *
+copy_for_command (com)
+     FOR_COM *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 (ARITH_FOR_COMMAND)
+static ARITH_FOR_COM *
+copy_arith_for_command (com)
+     ARITH_FOR_COM *com;
+{
+  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 /* ARITH_FOR_COMMAND */
+
+static GROUP_COM *
+copy_group_command (com)
+     GROUP_COM *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;
+  new_subshell->line = com->line;
+  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;
+
+  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);
+}
+
+static WHILE_COM *
+copy_while_command (com)
+     WHILE_COM *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);
+  return (new_while);
+}
+
+static IF_COM *
+copy_if_command (com)
+     IF_COM *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 = 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;
+
+  new_simple = (SIMPLE_COM *)xmalloc (sizeof (SIMPLE_COM));
+  new_simple->flags = com->flags;
+  new_simple->words = copy_word_list (com->words);
+  new_simple->redirects = com->redirects ? copy_redirects (com->redirects) : (REDIRECT *)NULL;
+  new_simple->line = com->line;
+  return (new_simple);
+}
+
+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;
+
+  new_def = (FUNCTION_DEF *)xmalloc (sizeof (FUNCTION_DEF));
+  new_def = copy_function_def_contents (com, new_def);
+  return (new_def);
+}
+
+/* Copy the command structure in COMMAND.  Return a pointer to the
+   copy.  Don't you forget to dispose_command () on this pointer
+   later! */
+COMMAND *
+copy_command (command)
+     COMMAND *command;
+{
+  COMMAND *new_command;
+
+  if (command == NULL)
+    return (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->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 =
+	  (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_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);
+}