Imported from ../bash-1.14.7.tar.gz.

1 files changed, 207 insertions, 0 deletions

diff --git a/dispose_cmd.c b/dispose_cmd.c
new file mode 100644
index 00000000..f420fe16
--- /dev/null
+++ b/dispose_cmd.c
@@ -0,0 +1,207 @@
+/* dispose_command.c -- dispose of a COMMAND structure. */
+
+/* Copyright (C) 1987,1991 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 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. */
+
+#include "shell.h"
+
+/* Dispose of the command structure passed. */
+void
+dispose_command (command)
+     COMMAND *command;
+{
+  if (!command) return;
+
+  if (command->redirects)
+    dispose_redirects (command->redirects);
+
+  switch (command->type)
+    {
+    case cm_for:
+      {
+	register FOR_COM *c = command->value.For;
+	dispose_word (c->name);
+	dispose_words (c->map_list);
+	dispose_command (c->action);
+	free (c);
+	break;
+      }
+
+#if defined (SELECT_COMMAND)
+    case cm_select:
+      {
+	register SELECT_COM *c = command->value.Select;
+	dispose_word (c->name);
+	dispose_words (c->map_list);
+	dispose_command (c->action);
+	free (c);
+	break;
+      }
+#endif
+    
+    case cm_group:
+      {
+	dispose_command (command->value.Group->command);
+	free (command->value.Group);
+	break;
+      }
+
+    case cm_case:
+      {
+	register CASE_COM *c = command->value.Case;
+	PATTERN_LIST *t, *p = c->clauses;
+
+	dispose_word (c->word);
+
+	while (p)
+	  {
+	    dispose_words (p->patterns);
+	    dispose_command (p->action);
+	    t = p;
+	    p = p->next;
+	    free (t);
+	  }
+	free (c);
+	break;
+      }
+
+    case cm_until:
+    case cm_while:
+      {
+	register WHILE_COM *c = command->value.While;
+
+	dispose_command (c->test);
+	dispose_command (c->action);
+	free (c);
+	break;
+      }
+
+    case cm_if:
+      {
+	register IF_COM *c = command->value.If;
+	dispose_command (c->test);
+	dispose_command (c->true_case);
+	dispose_command (c->false_case);
+	free (c);
+	break;
+      }
+
+    case cm_simple:
+      {
+	register SIMPLE_COM *c = command->value.Simple;
+	dispose_words (c->words);
+	dispose_redirects (c->redirects);
+	free (c);
+	break;
+      }
+
+    case cm_connection:
+      {
+	register CONNECTION *c = command->value.Connection;
+	dispose_command (c->first);
+	dispose_command (c->second);
+	free (c);
+	break;
+      }
+
+    case cm_function_def:
+      {
+	register FUNCTION_DEF *c = command->value.Function_def;
+	dispose_word (c->name);
+	dispose_command (c->command);
+	free (c);
+	break;
+      }
+
+    default:
+      report_error ("Attempt to free unknown command type `%d'.\n", command->type);
+      break;
+    }
+  free (command);
+}
+
+/* How to free a WORD_DESC. */
+void
+dispose_word (word)
+     WORD_DESC *word;
+{
+  if (word->word)
+    free (word->word);
+  free (word);
+}
+
+/* How to get rid of a linked list of words.  A WORD_LIST. */
+void
+dispose_words (list)
+     WORD_LIST *list;
+{
+  WORD_LIST *t;
+  while (list)
+    {
+      t = list;
+      list = list->next;
+      dispose_word (t->word);
+      free (t);
+    }
+}
+
+/* How to dispose of an array of pointers to char. */
+void
+dispose_word_array (array)
+     char **array;
+{
+  register int count;
+
+  for (count = 0; array[count]; count++)
+    free (array[count]);
+
+  free (array);
+}
+
+/* How to dispose of an list of redirections.  A REDIRECT. */
+void
+dispose_redirects (list)
+     REDIRECT *list;
+{
+  register REDIRECT *t;
+
+  while (list)
+    {
+      t = list;
+      list = list->next;
+      switch (t->instruction)
+	{
+	case r_reading_until:
+	case r_deblank_reading_until:
+	  free (t->here_doc_eof);
+	  /* ... */
+	case r_output_direction:
+	case r_input_direction:
+	case r_inputa_direction:
+	case r_appending_to:
+	case r_err_and_out:
+	case r_input_output:
+	case r_output_force:
+	case r_duplicating_input_word:
+	case r_duplicating_output_word:
+	  dispose_word (t->redirectee.filename);
+	  break;
+	}
+      free (t);
+    }
+}