10e2a9149SSascha Wildner /* 20e2a9149SSascha Wildner ** This file is in the public domain, so clarified as of 30e2a9149SSascha Wildner ** 2006-07-17 by Arthur David Olson. 40e2a9149SSascha Wildner */ 5984263bcSMatthew Dillon 61de703daSMatthew Dillon /* 71de703daSMatthew Dillon * $FreeBSD: src/usr.sbin/zic/ialloc.c,v 1.5 1999/08/28 01:21:18 peter Exp $ 81de703daSMatthew Dillon */ 9984263bcSMatthew Dillon /*LINTLIBRARY*/ 10984263bcSMatthew Dillon 11984263bcSMatthew Dillon #include "private.h" 12984263bcSMatthew Dillon 13984263bcSMatthew Dillon char * icatalloc(char * const old,const char * const new)14*402c9c91SSascha Wildnericatalloc(char *const old, const char * const new) 15984263bcSMatthew Dillon { 16a8ee260cSJoerg Sonnenberger char *result; 17a8ee260cSJoerg Sonnenberger int oldsize, newsize; 18984263bcSMatthew Dillon 19984263bcSMatthew Dillon newsize = (new == NULL) ? 0 : strlen(new); 20984263bcSMatthew Dillon if (old == NULL) 21984263bcSMatthew Dillon oldsize = 0; 22984263bcSMatthew Dillon else if (newsize == 0) 23984263bcSMatthew Dillon return old; 24984263bcSMatthew Dillon else oldsize = strlen(old); 25*402c9c91SSascha Wildner if ((result = realloc(old, oldsize + newsize + 1)) != NULL) 26984263bcSMatthew Dillon if (new != NULL) 2771126e33SSascha Wildner strcpy(result + oldsize, new); 28984263bcSMatthew Dillon return result; 29984263bcSMatthew Dillon } 30984263bcSMatthew Dillon 31984263bcSMatthew Dillon char * icpyalloc(const char * const string)32*402c9c91SSascha Wildnericpyalloc(const char * const string) 33984263bcSMatthew Dillon { 342038fb68SSascha Wildner return icatalloc(NULL, string); 35984263bcSMatthew Dillon } 36