[apple/icu.git] / icuSources / tools / tzcode / ialloc.c

/*
** This file is in the public domain, so clarified as of
** 2006-07-17 by Arthur David Olson.
*/

/*LINTLIBRARY*/

#include "private.h"

char *
icatalloc(char *const old, const char *const new)
{
	register char *	result;
	register int	oldsize, newsize;

	newsize = (new == NULL) ? 0 : strlen(new);
	if (old == NULL)
		oldsize = 0;
	else if (newsize == 0)
		return old;
	else	oldsize = strlen(old);
	if ((result = realloc(old, oldsize + newsize + 1)) != NULL)
		if (new != NULL)
			(void) strcpy(result + oldsize, new);
	return result;
}

char *
icpyalloc(const char *const string)
{
	return icatalloc(NULL, string);
}
Commit	Line	Data
73c04bcf A	1	/*
	2	** This file is in the public domain, so clarified as of
	3	** 2006-07-17 by Arthur David Olson.
	4	*/
	5
73c04bcf A	6	/LINTLIBRARY/
	7
	8	#include "private.h"
	9
73c04bcf	10	char *
b331163b	11	icatalloc(char const old, const char const new)
73c04bcf A	12	{
	13	register char * result;
	14	register int oldsize, newsize;
	15
	16	newsize = (new == NULL) ? 0 : strlen(new);
	17	if (old == NULL)
	18	oldsize = 0;
	19	else if (newsize == 0)
	20	return old;
	21	else oldsize = strlen(old);
b331163b	22	if ((result = realloc(old, oldsize + newsize + 1)) != NULL)
73c04bcf A	23	if (new != NULL)
	24	(void) strcpy(result + oldsize, new);
	25	return result;
	26	}
	27
	28	char *
b331163b	29	icpyalloc(const char *const string)
73c04bcf	30	{
b331163b	31	return icatalloc(NULL, string);
73c04bcf	32	}