text: /**
   * xrdp: A Remote Desktop Protocol server.
   *
   * Copyright (C) Jay Sorg 2004-2012
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   * simple list
   */
  
  #include "arch.h"
  #include "os_calls.h"
  #include "list.h"
  
  /*****************************************************************************/
  xrdpList* list_create(void)
  {
  	xrdpList *self;
  
  	self = (xrdpList *) g_malloc(sizeof(xrdpList), 1);
  	self->grow_by = 10;
  	self->alloc_size = 10;
  	self->items = (tbus *) g_malloc(sizeof(tbus) * 10, 1);
  	return self;
  }
  
  /*****************************************************************************/
  void list_delete(xrdpList *self)
  {
  	int i;
  
  	if (self == 0)
  	{
  		return;
  	}
  
  	if (self->auto_free)
  	{
  		for (i = 0; i < self->count; i++)
  		{
  			g_free((void *) self->items[i]);
  			self->items[i] = 0;
  		}
  	}
  
  	g_free(self->items);
  	g_free(self);
  }
  
  /*****************************************************************************/
  void list_add_item(xrdpList *self, tbus item)
  {
  	tbus *p;
  	int i;
  
  	if (self->count >= self->alloc_size)
  	{
  		i = self->alloc_size;
  		self->alloc_size += self->grow_by;
  		p = (tbus *) g_malloc(sizeof(tbus) * self->alloc_size, 1);
  		g_memcpy(p, self->items, sizeof(tbus) * i);
  		g_free(self->items);
  		self->items = p;
  	}
  
  	self->items[self->count] = item;
  	self->count++;
  }
  
  /*****************************************************************************/
  tbus list_get_item(xrdpList *self, int index)
  {
  	if (index < 0 || index >= self->count)
  	{
  		return 0;
  	}
  
  	return self->items[index];
  }
  
  /*****************************************************************************/
  void list_clear(xrdpList *self)
  {
  	int i;
  
  	if (self->auto_free)
  	{
  		for (i = 0; i < self->count; i++)
  		{
  			g_free((void *) self->items[i]);
  			self->items[i] = 0;
  		}
  	}
  
  	g_free(self->items);
  	self->count = 0;
  	self->grow_by = 10;
  	self->alloc_size = 10;
  	self->items = (tbus *) g_malloc(sizeof(tbus) * 10, 1);
  }
  
  /*****************************************************************************/
  int list_index_of(xrdpList *self, tbus item)
  {
  	int i;
  
  	for (i = 0; i < self->count; i++)
  	{
  		if (self->items[i] == item)
  		{
  			return i;
  		}
  	}
  
  	return -1;
  }
  
  /*****************************************************************************/
  void list_remove_item(xrdpList *self, int index)
  {
  	int i;
  
  	if (index >= 0 && index < self->count)
  	{
  		if (self->auto_free)
  		{
  			g_free((void *) self->items[index]);
  			self->items[index] = 0;
  		}
  
  		for (i = index; i < (self->count - 1); i++)
  		{
  			self->items[i] = self->items[i + 1];
  		}
  
  		self->count--;
  	}
  }
  
  /*****************************************************************************/
  void list_insert_item(xrdpList *self, int index, tbus item)
  {
  	tbus *p;
  	int i;
  
  	if (index == self->count)
  	{
  		list_add_item(self, item);
  		return;
  	}
  
  	if (index >= 0 && index < self->count)
  	{
  		self->count++;
  
  		if (self->count > self->alloc_size)
  		{
  			i = self->alloc_size;
  			self->alloc_size += self->grow_by;
  			p = (tbus *) g_malloc(sizeof(tbus) * self->alloc_size, 1);
  			g_memcpy(p, self->items, sizeof(tbus) * i);
  			g_free(self->items);
  			self->items = p;
  		}
  
  		for (i = (self->count - 2); i >= index; i--)
  		{
  			self->items[i + 1] = self->items[i];
  		}
  
  		self->items[index] = item;
  	}
  }
  
  /*****************************************************************************/
  /* append one list to another using strdup for each item in the list */
  /* begins copy at start_index, a zero based index on the soure list */
  void list_append_list_strdup(xrdpList *self, xrdpList *dest, int start_index)
  {
  	int index;
  	tbus item;
  	char *dup;
  
  	for (index = start_index; index < self->count; index++)
  	{
  		item = list_get_item(self, index);
  		dup = g_strdup((char *) item);
  		list_add_item(dest, (tbus) dup);
  	}
  }
  
  /*****************************************************************************/
  void list_dump_items(xrdpList *self)
  {
  	int index;
  
  	if (self->count == 0)
  	{
  		g_writeln("List is empty");
  	}
  
  	for (index = 0; index < self->count; index++)
  	{
  		g_writeln("%d: %s", index, list_get_item(self, index));
  	}
  }
  