blob: 7bd69975d4f4593395b8abfc7852449b31c80e1f [file] [log] [blame]
/*******************************************************************************
*
* Module Name: utnonansi - Non-ansi C library functions
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2015, 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 MERCHANTIBILITY 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 <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME ("utnonansi")
/*
* Non-ANSI C library functions - strlwr, strupr, stricmp, and a 64-bit
* version of strtoul.
*/
/*******************************************************************************
*
* FUNCTION: AcpiUtStrlwr (strlwr)
*
* PARAMETERS: SrcString - The source string to convert
*
* RETURN: None
*
* DESCRIPTION: Convert a string to lowercase
*
******************************************************************************/
void
AcpiUtStrlwr (
char *SrcString)
{
char *String;
ACPI_FUNCTION_ENTRY ();
if (!SrcString)
{
return;
}
/* Walk entire string, lowercasing the letters */
for (String = SrcString; *String; String++)
{
*String = (char) tolower ((int) *String);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiUtStrupr (strupr)
*
* PARAMETERS: SrcString - The source string to convert
*
* RETURN: None
*
* DESCRIPTION: Convert a string to uppercase
*
******************************************************************************/
void
AcpiUtStrupr (
char *SrcString)
{
char *String;
ACPI_FUNCTION_ENTRY ();
if (!SrcString)
{
return;
}
/* Walk entire string, uppercasing the letters */
for (String = SrcString; *String; String++)
{
*String = (char) toupper ((int) *String);
}
}
/******************************************************************************
*
* FUNCTION: AcpiUtStricmp (stricmp)
*
* PARAMETERS: String1 - first string to compare
* String2 - second string to compare
*
* RETURN: int that signifies string relationship. Zero means strings
* are equal.
*
* DESCRIPTION: Case-insensitive string compare. Implementation of the
* non-ANSI stricmp function.
*
******************************************************************************/
int
AcpiUtStricmp (
char *String1,
char *String2)
{
int c1;
int c2;
do
{
c1 = tolower ((int) *String1);
c2 = tolower ((int) *String2);
String1++;
String2++;
}
while ((c1 == c2) && (c1));
return (c1 - c2);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtStrtoul64
*
* PARAMETERS: String - Null terminated string
* Base - Radix of the string: 16 or ACPI_ANY_BASE;
* ACPI_ANY_BASE means 'in behalf of ToInteger'
* RetInteger - Where the converted integer is returned
*
* RETURN: Status and Converted value
*
* DESCRIPTION: Convert a string into an unsigned value. Performs either a
* 32-bit or 64-bit conversion, depending on the current mode
* of the interpreter.
*
* NOTE: Does not support Octal strings, not needed.
*
******************************************************************************/
ACPI_STATUS
AcpiUtStrtoul64 (
char *String,
UINT32 Base,
UINT64 *RetInteger)
{
UINT32 ThisDigit = 0;
UINT64 ReturnValue = 0;
UINT64 Quotient;
UINT64 Dividend;
UINT32 ToIntegerOp = (Base == ACPI_ANY_BASE);
UINT32 Mode32 = (AcpiGbl_IntegerByteWidth == 4);
UINT8 ValidDigits = 0;
UINT8 SignOf0x = 0;
UINT8 Term = 0;
ACPI_FUNCTION_TRACE_STR (UtStroul64, String);
switch (Base)
{
case ACPI_ANY_BASE:
case 16:
break;
default:
/* Invalid Base */
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
if (!String)
{
goto ErrorExit;
}
/* Skip over any white space in the buffer */
while ((*String) && (isspace ((int) *String) || *String == '\t'))
{
String++;
}
if (ToIntegerOp)
{
/*
* Base equal to ACPI_ANY_BASE means 'ToInteger operation case'.
* We need to determine if it is decimal or hexadecimal.
*/
if ((*String == '0') && (tolower ((int) *(String + 1)) == 'x'))
{
SignOf0x = 1;
Base = 16;
/* Skip over the leading '0x' */
String += 2;
}
else
{
Base = 10;
}
}
/* Any string left? Check that '0x' is not followed by white space. */
if (!(*String) || isspace ((int) *String) || *String == '\t')
{
if (ToIntegerOp)
{
goto ErrorExit;
}
else
{
goto AllDone;
}
}
/*
* Perform a 32-bit or 64-bit conversion, depending upon the current
* execution mode of the interpreter
*/
Dividend = (Mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX;
/* Main loop: convert the string to a 32- or 64-bit integer */
while (*String)
{
if (isdigit ((int) *String))
{
/* Convert ASCII 0-9 to Decimal value */
ThisDigit = ((UINT8) *String) - '0';
}
else if (Base == 10)
{
/* Digit is out of range; possible in ToInteger case only */
Term = 1;
}
else
{
ThisDigit = (UINT8) toupper ((int) *String);
if (isxdigit ((int) ThisDigit))
{
/* Convert ASCII Hex char to value */
ThisDigit = ThisDigit - 'A' + 10;
}
else
{
Term = 1;
}
}
if (Term)
{
if (ToIntegerOp)
{
goto ErrorExit;
}
else
{
break;
}
}
else if ((ValidDigits == 0) && (ThisDigit == 0) && !SignOf0x)
{
/* Skip zeros */
String++;
continue;
}
ValidDigits++;
if (SignOf0x && ((ValidDigits > 16) || ((ValidDigits > 8) && Mode32)))
{
/*
* This is ToInteger operation case.
* No any restrictions for string-to-integer conversion,
* see ACPI spec.
*/
goto ErrorExit;
}
/* Divide the digit into the correct position */
(void) AcpiUtShortDivide ((Dividend - (UINT64) ThisDigit),
Base, &Quotient, NULL);
if (ReturnValue > Quotient)
{
if (ToIntegerOp)
{
goto ErrorExit;
}
else
{
break;
}
}
ReturnValue *= Base;
ReturnValue += ThisDigit;
String++;
}
/* All done, normal exit */
AllDone:
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n",
ACPI_FORMAT_UINT64 (ReturnValue)));
*RetInteger = ReturnValue;
return_ACPI_STATUS (AE_OK);
ErrorExit:
/* Base was set/validated above */
if (Base == 10)
{
return_ACPI_STATUS (AE_BAD_DECIMAL_CONSTANT);
}
else
{
return_ACPI_STATUS (AE_BAD_HEX_CONSTANT);
}
}
#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION)
/*******************************************************************************
*
* FUNCTION: AcpiUtSafeStrcpy, AcpiUtSafeStrcat
*
* PARAMETERS: Adds a "DestSize" parameter to each of the standard string
* functions. This is the size of the Destination buffer.
*
* RETURN: TRUE if the operation would overflow the destination buffer.
*
* DESCRIPTION: Safe versions of standard Clib string functions. Ensure that
* the result of the operation will not overflow the output string
* buffer.
*
* NOTE: These functions are typically only helpful for processing
* user input and command lines. For most ACPICA code, the
* required buffer length is precisely calculated before buffer
* allocation, so the use of these functions is unnecessary.
*
******************************************************************************/
BOOLEAN
AcpiUtSafeStrcpy (
char *Dest,
ACPI_SIZE DestSize,
char *Source)
{
if (strlen (Source) >= DestSize)
{
return (TRUE);
}
strcpy (Dest, Source);
return (FALSE);
}
BOOLEAN
AcpiUtSafeStrcat (
char *Dest,
ACPI_SIZE DestSize,
char *Source)
{
if ((strlen (Dest) + strlen (Source)) >= DestSize)
{
return (TRUE);
}
strcat (Dest, Source);
return (FALSE);
}
#endif