1 files changed, 78 insertions, 0 deletions
diff --git a/hardinfo2/stack.c b/hardinfo2/stack.c
new file mode 100644
index 00000000..02a7bea6
--- /dev/null
+++ b/hardinfo2/stack.c
@@ -0,0 +1,78 @@
+/*
+ *    HardInfo - Displays System Information
+ *    Copyright (C) 2003-2007 Leandro A. F. Pereira <leandro@hardinfo.org>
+ *
+ *    This program 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, version 2.
+ *
+ *    This program 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 this program; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include "stack.h"
+
+Stack*
+stack_new(void)
+{
+	Stack *stack;
+	
+	stack = g_new0(Stack, 1);
+	stack->_stack = NULL;
+	
+	return stack;
+}
+
+void
+stack_free(Stack *stack)
+{
+	g_return_if_fail(stack);
+	
+	g_slist_free(stack->_stack);
+	g_free(stack);
+}
+
+gboolean
+stack_is_empty(Stack *stack)
+{
+	g_return_val_if_fail(stack, TRUE);
+	
+	return stack->_stack == NULL;
+}
+
+void
+stack_push(Stack *stack, gpointer data)
+{
+	g_return_if_fail(stack);
+	
+	stack->_stack = g_slist_prepend(stack->_stack, data);
+}
+
+gpointer
+stack_pop(Stack *stack)
+{
+	GSList *element;
+	gpointer data = NULL;
+	
+	if (G_LIKELY(stack && stack->_stack)) {
+		element = stack->_stack;
+		stack->_stack = element->next;
+
+		data = element->data;
+		g_slist_free_1(element);
+	}
+	
+	return data;
+}
+
+gpointer
+stack_peek(Stack *stack)
+{
+	return (G_LIKELY(stack && stack->_stack)) ? stack->_stack->data : NULL;
+}