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/*
* "$Id$"
*
* Byte checking routines for CUPS.
*
* Copyright 2007 by Apple Inc.
* Copyright 1993-2005 by Easy Software Products.
*
* These coded instructions, statements, and computer programs are the
* property of Apple Inc. and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "LICENSE.txt"
* which should have been included with this file. If this file is
* file is missing or damaged, see the license at "http://www.cups.org/".
*
* Contents:
*
* cupsCheckBytes() - Check to see if all bytes are zero.
* cupsCheckValue() - Check to see if all bytes match the given value.
*/
/*
* Include necessary headers.
*/
#include "driver.h"
/*
* 'cupsCheckBytes()' - Check to see if all bytes are zero.
*/
int /* O - 1 if they match */
cupsCheckBytes(const unsigned char *bytes, /* I - Bytes to check */
int length) /* I - Number of bytes to check */
{
while (length > 7)
{
if (*bytes++)
return (0);
if (*bytes++)
return (0);
if (*bytes++)
return (0);
if (*bytes++)
return (0);
if (*bytes++)
return (0);
if (*bytes++)
return (0);
if (*bytes++)
return (0);
if (*bytes++)
return (0);
length -= 8;
}
while (length > 0)
if (*bytes++)
return (0);
else
length --;
return (1);
}
/*
* 'cupsCheckValue()' - Check to see if all bytes match the given value.
*/
int /* O - 1 if they match */
cupsCheckValue(const unsigned char *bytes, /* I - Bytes to check */
int length, /* I - Number of bytes to check */
const unsigned char value) /* I - Value to check */
{
while (length > 7)
{
if (*bytes++ != value)
return (0);
if (*bytes++ != value)
return (0);
if (*bytes++ != value)
return (0);
if (*bytes++ != value)
return (0);
if (*bytes++ != value)
return (0);
if (*bytes++ != value)
return (0);
if (*bytes++ != value)
return (0);
if (*bytes++ != value)
return (0);
length -= 8;
}
while (length > 0)
if (*bytes++ != value)
return (0);
else
length --;
return (1);
}
/*
* End of "$Id$".
*/
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