FreeRTOS/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fs.c

/*
 * Copyright (c) 2001, Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 * $Id: httpd-fs.c,v 1.1 2006/06/07 09:13:08 adam Exp $
 */
#include "httpd.h"
#include "httpd-fs.h"
#include "httpd-fsdata.h"

#ifndef NULL
#define NULL	0
#endif /* NULL */

#include "httpd-fsdata.c"

#if HTTPD_FS_STATISTICS
static u16_t	count[HTTPD_FS_NUMFILES];
#endif /* HTTPD_FS_STATISTICS */

/*-----------------------------------------------------------------------------------*/
static u8_t httpd_fs_strcmp( const char *str1, const char *str2 )
{
	u8_t	i;
	i = 0;
loop:
	if( str2[i] == 0 || str1[i] == '\r' || str1[i] == '\n' )
	{
		return 0;
	}

	if( str1[i] != str2[i] )
	{
		return 1;
	}

	++i;
	goto loop;
}

/*-----------------------------------------------------------------------------------*/
int httpd_fs_open( const char *name, struct httpd_fs_file *file )
{
#if HTTPD_FS_STATISTICS
	u16_t								i = 0;
#endif /* HTTPD_FS_STATISTICS */
	struct httpd_fsdata_file_noconst	*f;

	for( f = ( struct httpd_fsdata_file_noconst * ) HTTPD_FS_ROOT; f != NULL; f = ( struct httpd_fsdata_file_noconst * ) f->next )
	{
		if( httpd_fs_strcmp(name, f->name) == 0 )
		{
			file->data = f->data;
			file->len = f->len;
#if HTTPD_FS_STATISTICS
			++count[i];
#endif /* HTTPD_FS_STATISTICS */
			return 1;
		}

#if HTTPD_FS_STATISTICS
		++i;
#endif /* HTTPD_FS_STATISTICS */
	}

	return 0;
}

/*-----------------------------------------------------------------------------------*/
void httpd_fs_init( void )
{
#if HTTPD_FS_STATISTICS
	u16_t	i;
	for( i = 0; i < HTTPD_FS_NUMFILES; i++ )
	{
		count[i] = 0;
	}

#endif /* HTTPD_FS_STATISTICS */
}

/*-----------------------------------------------------------------------------------*/
#if HTTPD_FS_STATISTICS
u16_t httpd_fs_count( char *name )
{
	struct httpd_fsdata_file_noconst	*f;
	u16_t								i;

	i = 0;
	for( f = ( struct httpd_fsdata_file_noconst * ) HTTPD_FS_ROOT; f != NULL; f = ( struct httpd_fsdata_file_noconst * ) f->next )
	{
		if( httpd_fs_strcmp(name, f->name) == 0 )
		{
			return count[i];
		}

		++i;
	}

	return 0;
}

#endif /* HTTPD_FS_STATISTICS */

/*-----------------------------------------------------------------------------------*/