fis-gtm/sr_port/gtm_string.h

/****************************************************************
 *								*
 *	Copyright 2001, 2013 Fidelity Information Services, Inc	*
 *								*
 *	This source code contains the intellectual property	*
 *	of its copyright holder(s), and is made available	*
 *	under a license.  If you do not know the terms of	*
 *	the license, please stop and do not read further.	*
 *								*
 ****************************************************************/

/* If this is not the vax, define string.h. This is because the Vax
   has its own built-in instructions for string manipulation.
*/
#ifndef GTM_STRINGH
#define GTM_STRINGH

#include <string.h>

#define STRERROR	strerror
#define	STRCPY(DEST, SOURCE)		strcpy((char *)(DEST), (char *)(SOURCE))
#define STRNCPY_LIT(DEST, LITERAL)	strncpy((char *)(DEST), (char *)(LITERAL), SIZEOF(LITERAL) - 1)	/* BYPASSOK */
#define	STRNCPY_STR(DEST, STRING, LEN)	strncpy((char *)(DEST), (char *)(STRING), LEN)
#define	STRCMP(SOURCE, DEST)		strcmp((char *)(SOURCE), (char *)(DEST))
#define	STRNCMP_LIT(SOURCE, LITERAL)	strncmp(SOURCE, LITERAL, SIZEOF(LITERAL) - 1)		/* BYPASSOK */
/* Make sure that SIZEOF(SOURCE) > 0 or SOURCE != NULL before running. */
#define	STRNCMP_LIT_FULL(SOURCE, LITERAL)	strncmp(SOURCE, LITERAL, SIZEOF(LITERAL))	/* BYPASSOK */
#define	STRNCMP_STR(SOURCE, STRING, LEN) strncmp(SOURCE, STRING, LEN)
/* We need to catch any memcpy() that is used when the source and target strings overlap in any fashion so we can change
 * them to a memmove. So in debug builds, assert fail if this is the case.
 */
#if defined(DEBUG) && !defined(BYPASS_MEMCPY_OVERRIDE)
#  include "gtm_memcpy_validate_and_execute.h"
#  ifdef memcpy
#    undef memcpy	/* Some platforms like AIX create memcpy as a #define which needs removing before re-define */
#  endif
#  define memcpy(TARGET, SRC, LEN) gtm_memcpy_validate_and_execute((void *)(TARGET), (const void *)(SRC), (LEN))
#endif
/* The strnlen() function is POSIX-2008 so not widely avaiable yet so use it or our own critter as appropriate */
#if (defined(__linux__) || defined(AIX))
# define STRNLEN(str, maxlen, rslt) rslt = strnlen(str, maxlen)
#else
# define STRNLEN(str, maxlen, rslt)						\
{										\
	unsigned char	*c, *cend;						\
										\
	for (c = (unsigned char *)str, cend = c + maxlen; c < cend; ++c)	\
		if ('\0' == *c)							\
			break;							\
	rslt = c - (unsigned char *)str;					\
}
#endif
#define STRNDUP(STR, MAXLEN, DST)						\
{										\
	size_t local_len;							\
										\
	STRNLEN(STR, MAXLEN, local_len);					\
	DST = (char *) malloc(local_len + 1);					\
	memcpy(DST, STR, local_len);						\
	DST[local_len] = '\0';							\
}

#endif