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/******************************************************************************
*
* Module Name: utascii - Utility ascii functions
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2025, Intel Corp.
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*/
#include "acpi.h"
#include "accommon.h"
/*******************************************************************************
*
* FUNCTION: AcpiUtValidNameseg
*
* PARAMETERS: Name - The name or table signature to be examined.
* Four characters, does not have to be a
* NULL terminated string.
*
* RETURN: TRUE if signature is has 4 valid ACPI characters
*
* DESCRIPTION: Validate an ACPI table signature.
*
******************************************************************************/
BOOLEAN
AcpiUtValidNameseg (
char *Name)
{
UINT32 i;
/* Validate each character in the signature */
for (i = 0; i < ACPI_NAMESEG_SIZE; i++)
{
if (!AcpiUtValidNameChar (Name[i], i))
{
return (FALSE);
}
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtValidNameChar
*
* PARAMETERS: Char - The character to be examined
* Position - Byte position (0-3)
*
* RETURN: TRUE if the character is valid, FALSE otherwise
*
* DESCRIPTION: Check for a valid ACPI character. Must be one of:
* 1) Upper case alpha
* 2) numeric
* 3) underscore
*
* We allow a '!' as the last character because of the ASF! table
*
******************************************************************************/
BOOLEAN
AcpiUtValidNameChar (
char Character,
UINT32 Position)
{
if (!((Character >= 'A' && Character <= 'Z') ||
(Character >= '0' && Character <= '9') ||
(Character == '_')))
{
/* Allow a '!' in the last position */
if (Character == '!' && Position == 3)
{
return (TRUE);
}
return (FALSE);
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCheckAndRepairAscii
*
* PARAMETERS: Name - Ascii string
* Count - Number of characters to check
*
* RETURN: None
*
* DESCRIPTION: Ensure that the requested number of characters are printable
* Ascii characters. Sets non-printable and null chars to <space>.
*
******************************************************************************/
void
AcpiUtCheckAndRepairAscii (
UINT8 *Name,
char *RepairedName,
UINT32 Count)
{
UINT32 i;
for (i = 0; i < Count; i++)
{
RepairedName[i] = (char) Name[i];
if (!Name[i])
{
return;
}
if (!isprint (Name[i]))
{
RepairedName[i] = ' ';
}
}
}
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