add directory bin

bin/old/bash/bash-1.05/dispose_cmd.c

@@ -0,0 +1,175 @@
+/* dispose_command.c -- dispose of a COMMAND structure. */
+
+/* Copyright (C) 1989 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. */
+dispose_command (command)
+     register 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;
+      }
+    
+    case cm_group:
+      {
+	dispose_command (command->value.Group->command);
+	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);
+	}
+	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. */
+dispose_word (word)
+     WORD_DESC *word;
+{
+  free (word->word);
+  free (word);
+}
+
+/* How to get rid of a linked list of words.  A WORD_LIST. */
+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. */
+dispose_word_array (array)
+     char **array;
+{
+  int count = 0;
+  for (count = 0; array[count]; count++)
+    free (array[count]);
+  free (array);
+}
+
+/* How to dispose of an list of redirections.  A REDIRECT. */
+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:
+      dispose_word (t->redirectee.filename);
+      break;
+    }
+    free (t);
+  }
+}