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// Copyright (c) 2004 David Muse
// See the COPYING file for more information.
#ifndef RUDIMENTS_RAWBUFFER_H
#define RUDIMENTS_RAWBUFFER_H
#include <rudiments/private/rawbufferincludes.h>
// The rawbuffer class provides methods for operating on raw memory buffers.
//
// Unlike the functions in sys/string.h, these methods are NULL safe. If any of
// the pointer arguments are NULL, your application will not crash.
class rawbuffer {
public:
static void *copy(void *dest, const void *src,
size_t size);
// Copies "size" bytes from "src" into "dest".
// "src" and "dest" may NOT overlap.
// Returns a pointer to "dest".
static void *copyWithOverlap(void *dest,
const void *src,
size_t size);
// Copies "size" bytes from "src" to "dest".
// "src" and "dest" may overlap.
// Returns a pointer to "dest".
static void *copyUntil(void *dest, const void *src,
unsigned char character,
size_t size);
// Copies bytes from "src" into "dest" until
// "character" is encountered in "src" or "size"
// bytes have been copied.
// "src" and "dest" may NOT overlap.
// Returns a pointer to "dest".
static void *copySwapBytes(void *dest,
const void *src,
size_t size);
// Copies "size" bytes from "src" into "dest"
// while swapping byte order. Useful for
// exchanging data between big and little
// endian machines.
// "src" and "dest" may NOT overlap.
// Returns a pointer to "dest".
static void *set(void *dest, unsigned char character,
size_t size);
// Sets "size" bytes of "dest" to "character".
// Returns a pointer to "dest".
static void *zero(void *dest, size_t size);
// Sets "size" bytes of "dest" to NULL.
// Returns a pointer to "dest".
static int compare(const void *s1, const void *s2,
size_t size);
// Returns an integer less than, equal to or
// greater than 0 if "size" bytes of "s1" are
// less than, equal to or greater than "size"
// bytes of "s2".
static void *findFirst(const void *haystack,
unsigned char needle,
size_t size);
// Returns a pointer to the first occurrance
// of "needle" in the first "size" bytes of
// "haystack".
// Returns NULL if no match is found.
static void *findLast(const void *haystack,
unsigned char needle,
size_t size);
// Returns a pointer to the last occurrance
// of "needle" in the first "size" bytes of
// "haystack".
// Returns NULL if no match is found.
static void *findFirst(const void *haystack,
size_t haystacksize,
const void *needle,
size_t needleize);
// Returns a pointer to the first occurrance
// of "needle" in the first "size" bytes of
// "haystack".
// Returns NULL if no match is found.
static void *findLast(const void *haystack,
size_t haystacksize,
const void *needle,
size_t needleize);
// Returns a pointer to the last occurrance
// of "needle" in the first "size" bytes of
// "haystack".
// Returns NULL if no match is found.
};
#endif
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