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/*
* Copyright (c) 2007-2009 NVIDIA Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 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.
*
* Neither the name of the NVIDIA Corporation 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 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 HOLDER 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.
*
*/
#ifndef INCLUDED_NVUTIL_H
#define INCLUDED_NVUTIL_H
//###########################################################################
//############################### INCLUDES ##################################
//###########################################################################
#include "nvcommon.h"
#include "nvos.h"
#if defined(__cplusplus)
extern "C"
{
#endif
//###########################################################################
//############################### PROTOTYPES ################################
//###########################################################################
/**
* parse a string into an unsigned integer.
*
* @param s - pointer to the string (null-terminated)
* @param endptr - if not NULL this returns pointing to the first character
* in the string that was not used in the conversion.
* @param base - must be 0, 10, or 16.
* 10: the number is parsed as a base 10 number
* 16: the number is parsed as a base 16 number (0x ignored)
* 0: base 10 unless there is a leading 0x
*/
unsigned long int
NvUStrtoul(
const char *s,
char **endptr,
int base);
/**
* Sames NvUStrtoul, execpt can parse a 64 bit unsigned integer.
*/
unsigned long long int
NvUStrtoull(
const char *s,
char **endptr,
int base);
/**
* parse a string into a signed integer.
*
* @param s - pointer to the string (null-terminated)
* @param endptr - if not NULL this returns pointing to the first character
* in the string that was not used in the conversion.
* @param base - must be 0, 10, or 16.
* 10: the number is parsed as a base 10 number
* 16: the number is parsed as a base 16 number (0x ignored)
* 0: base 10 unless there is a leading 0x
*/
long int
NvUStrtol(
const char *s,
char **endptr,
int base);
/**
* concatenate 2 strings.
*
* Note: dest is always left null terminated even if src exceeds n.
*
* @param dest - string to concatenate to
* @param src - string to add to the end of dest
* @param n - At most n chars from src (plus a NUL) are appended to dest
*/
void
NvUStrncat(
char *dest,
const char *src,
size_t n);
/**
* returns a pointer to the first occurence of str2 in str1.
*
* This function returns NULL if no match is found. If the length of str2 is
* zero, then str1 is returned.
*
* @param str1 - string to be scanned
* @param str2 - string containing the sequence of characters to match
*/
char *
NvUStrstr(
const char *str1,
const char *str2);
/**
* converts strings between code pages
*
* @param pDest - the destination buffer
* @param DestCodePage - the target code page
* @param DestSize - size of the destination buffer, in bytes
* @param pSrc - the source string
* @param SrcSize - the size of the source buffer, in bytes, or zero if the
* string is NULL-terminated
* @param SrcCodePage - the source string's code page
*
* @returns The length of the destination string and NULL termination, in bytes
*
* If pDest is NULL, this function will return the number of bytes, including
* NULL termination, of the destination buffer required to store the converted
* string.
*
* If pDest is specified, up to DestSize bytes of the code-page converted
* string will be written to it. If the destination buffer is too small to
* store the converted string, the string will be truncated and a
* NULL-terminator added.
*
* If either SrcCodePage or DestCodePage is NvOsCodePage_Unknown, the system's
* default code page will be used for the conversion.
*/
size_t
NvUStrlConvertCodePage(void *pDest,
size_t DestSize,
NvOsCodePage DestCodePage,
const void *pSrc,
size_t SrcSize,
NvOsCodePage SrcCodePage);
/**
* dynamically allocate zeroed memory (uses NvOsAlloc())
*
* @param size number of bytes to allocate
* @returns NULL on failure
* @returns pointer to zeroed memory on success (must be freed with NvOsFree)
*/
static NV_INLINE void *
NvUAlloc0(size_t size)
{
void *p = NvOsAlloc(size);
if (p)
NvOsMemset(p,0,size);
return p;
}
/**
* Finds the lowest set bit.
*
* @param bits The bits to look through
* @param nBits The number of bits wide
*/
NvU32
NvULowestBitSet( NvU32 bits, NvU32 nBits );
#if defined(__cplusplus)
}
#endif
#endif // INCLUDED_NVUTIL_H
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