1 /* $RCSfile: util.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:29 $
3 * Copyright (c) 1991-1997, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
21 static char nomem[] = "Out of memory!\n";
23 /* paranoid version of malloc */
27 safemalloc(MEM_SIZE size)
31 /* malloc(0) is NASTY on some systems */
32 ptr = malloc(size ? size : 1);
35 fprintf(stderr,"0x%lx: (%05d) malloc %ld bytes\n",(unsigned long)ptr,
41 fputs(nomem,stdout) FLUSH;
48 /* paranoid version of realloc */
51 saferealloc(Malloc_t where, MEM_SIZE size)
55 /* realloc(0) is NASTY on some systems */
56 ptr = realloc(where, size ? size : 1);
59 fprintf(stderr,"0x%lx: (%05d) rfree\n",(unsigned long)where,an++);
60 fprintf(stderr,"0x%lx: (%05d) realloc %ld bytes\n",(unsigned long)ptr,an++,(long)size);
66 fputs(nomem,stdout) FLUSH;
73 /* safe version of free */
76 safefree(Malloc_t where)
80 fprintf(stderr,"0x%lx: (%05d) free\n",(unsigned long)where,an++);
85 /* safe version of string copy */
88 safecpy(char *to, register char *from, register int len)
90 register char *dest = to;
93 for (len--; len && (*dest++ = *from++); len--) ;
98 /* copy a string up to some (non-backslashed) delimiter, if any */
101 cpytill(register char *to, register char *from, register int delim)
103 for (; *from; from++,to++) {
105 if (from[1] == delim)
107 else if (from[1] == '\\')
110 else if (*from == delim)
120 cpy2(register char *to, register char *from, register int delim)
122 for (; *from; from++,to++) {
125 else if (*from == '$')
127 else if (*from == delim)
135 /* return ptr to little string in big string, NULL if not found */
138 instr(char *big, char *little)
140 register char *t, *s, *x;
142 for (t = big; *t; t++) {
143 for (x=t,s=little; *s; x++,s++) {
155 /* copy a string to a safe spot */
160 register char *newaddr = (char *) safemalloc((MEM_SIZE)(strlen(str)+1));
162 (void)strcpy(newaddr,str);
166 /* grow a static string to at least a certain length */
169 growstr(char **strptr, int *curlen, int newlen)
171 if (newlen > *curlen) { /* need more room? */
173 *strptr = (char *) saferealloc(*strptr,(MEM_SIZE)newlen);
175 *strptr = (char *) safemalloc((MEM_SIZE)newlen);
181 #if defined(I_STDARG) && defined(HAS_VPRINTF)
185 croak(pat,a1,a2,a3,a4)
188 #endif /* I_STDARG */
190 #if defined(I_STDARG) && defined(HAS_VPRINTF)
194 vfprintf(stderr,pat,args);
196 fprintf(stderr,pat,a1,a2,a3,a4);
202 #if defined(I_STDARG) && defined(HAS_VPRINTF)
206 fatal(pat,a1,a2,a3,a4)
209 #endif /* I_STDARG */
211 #if defined(I_STDARG) && defined(HAS_VPRINTF)
215 vfprintf(stderr,pat,args);
217 fprintf(stderr,pat,a1,a2,a3,a4);
223 #if defined(I_STDARG) && defined(HAS_VPRINTF)
227 warn(pat,a1,a2,a3,a4)
230 #endif /* I_STDARG */
232 #if defined(I_STDARG) && defined(HAS_VPRINTF)
236 vfprintf(stderr,pat,args);
238 fprintf(stderr,pat,a1,a2,a3,a4);