1 #pragma ident "%Z%%M% %I% %E% SMI" 2 3 /* static char elsieid[] = "@(#)ialloc.c 8.29"; */ 4 5 /*LINTLIBRARY*/ 6 7 #include "private.h" 8 9 #define nonzero(n) (((n) == 0) ? 1 : (n)) 10 11 char * imalloc(n)12imalloc(n) 13 const int n; 14 { 15 return (malloc((size_t) nonzero(n))); 16 } 17 18 void * irealloc(pointer,size)19irealloc(pointer, size) 20 void * const pointer; 21 const int size; 22 { 23 if (pointer == NULL) 24 return (imalloc(size)); 25 return (realloc((void *) pointer, (size_t) nonzero(size))); 26 } 27 28 char * icatalloc(old,new)29icatalloc(old, new) 30 char * const old; 31 const char * const new; 32 { 33 register char * result; 34 register int oldsize, newsize; 35 36 newsize = (new == NULL) ? 0 : strlen(new); 37 if (old == NULL) 38 oldsize = 0; 39 else if (newsize == 0) 40 return (old); 41 else oldsize = strlen(old); 42 if ((result = irealloc(old, oldsize + newsize + 1)) != NULL) 43 if (new != NULL) 44 (void) strcpy(result + oldsize, new); 45 return (result); 46 } 47 48 char * icpyalloc(string)49icpyalloc(string) 50 const char * const string; 51 { 52 return (icatalloc((char *) NULL, string)); 53 } 54 55 void ifree(p)56ifree(p) 57 char * const p; 58 { 59 if (p != NULL) 60 (void) free(p); 61 } 62