X-Git-Url: http://review.tizen.org/git/?p=platform%2Fupstream%2Fbash.git;a=blobdiff_plain;f=copy_cmd.c;h=826e0c3a4650b1833888176d50c93d62a2ce9d4e;hp=991bbc9dafb99c09aef7920156826ec1682106be;hb=HEAD;hpb=726f63884db0132f01745f1fb4465e6621088ccf

diff --git a/copy_cmd.c b/copy_cmd.c
index 991bbc9..826e0c3 100644
--- a/copy_cmd.c
+++ b/copy_cmd.c
@@ -2,60 +2,78 @@
    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 *));
 }
 
@@ -63,9 +81,12 @@ static PATTERN_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);
 }
 
@@ -73,14 +94,13 @@ static PATTERN_LIST *
 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 *));
 }
@@ -90,89 +110,142 @@ REDIRECT *
 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);
@@ -182,8 +255,9 @@ static WHILE_COM *
 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);
@@ -194,36 +268,85 @@ static IF_COM *
 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);
 }
 
@@ -234,72 +357,94 @@ COMMAND *
 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);
 }