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- /* $RCSfile: util.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:29 $
- *
- * Copyright (c) 1991, Larry Wall
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Artistic License, as specified in the README file.
- *
- * $Log: util.c,v $
- */
-
- #include "EXTERN.h"
- #include "a2p.h"
- #include "INTERN.h"
- #include "util.h"
-
- #define FLUSH
-
- static char nomem[] = "Out of memory!\n";
-
- /* paranoid version of malloc */
-
-
- Malloc_t
- safemalloc(size)
- MEM_SIZE size;
- {
- char *ptr;
- Malloc_t malloc();
-
- ptr = (char *) malloc(size?size:1); /* malloc(0) is NASTY on our system */
- #ifdef DEBUGGING
- if (debug & 128)
- fprintf(stderr,"0x%x: (%05d) malloc %d bytes\n",ptr,an++,size);
- #endif
- if (ptr != Nullch)
- return ptr;
- else {
- fputs(nomem,stdout) FLUSH;
- exit(1);
- }
- /*NOTREACHED*/
- }
-
- /* paranoid version of realloc */
-
- Malloc_t
- saferealloc(where,size)
- char *where;
- MEM_SIZE size;
- {
- char *ptr;
- Malloc_t realloc();
-
- ptr = (char *)
- realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
- #ifdef DEBUGGING
- if (debug & 128) {
- fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++);
- fprintf(stderr,"0x%x: (%05d) realloc %d bytes\n",ptr,an++,size);
- }
- #endif
- if (ptr != Nullch)
- return ptr;
- else {
- fputs(nomem,stdout) FLUSH;
- exit(1);
- }
- /*NOTREACHED*/
- }
-
- /* safe version of free */
-
- void
- safefree(where)
- char *where;
- {
- #ifdef DEBUGGING
- if (debug & 128)
- fprintf(stderr,"0x%x: (%05d) free\n",where,an++);
- #endif
- free(where);
- }
-
- /* safe version of string copy */
-
- char *
- safecpy(to,from,len)
- char *to;
- register char *from;
- register int len;
- {
- register char *dest = to;
-
- if (from != Nullch)
- for (len--; len && (*dest++ = *from++); len--) ;
- *dest = '\0';
- return to;
- }
-
- /* copy a string up to some (non-backslashed) delimiter, if any */
-
- char *
- cpytill(to,from,delim)
- register char *to, *from;
- register int delim;
- {
- for (; *from; from++,to++) {
- if (*from == '\\') {
- if (from[1] == delim)
- from++;
- else if (from[1] == '\\')
- *to++ = *from++;
- }
- else if (*from == delim)
- break;
- *to = *from;
- }
- *to = '\0';
- return from;
- }
-
-
- char *
- cpy2(to,from,delim)
- register char *to, *from;
- register int delim;
- {
- for (; *from; from++,to++) {
- if (*from == '\\')
- *to++ = *from++;
- else if (*from == '$')
- *to++ = '\\';
- else if (*from == delim)
- break;
- *to = *from;
- }
- *to = '\0';
- return from;
- }
-
- /* return ptr to little string in big string, NULL if not found */
-
- char *
- instr(big, little)
- char *big, *little;
-
- {
- register char *t, *s, *x;
-
- for (t = big; *t; t++) {
- for (x=t,s=little; *s; x++,s++) {
- if (!*x)
- return Nullch;
- if (*s != *x)
- break;
- }
- if (!*s)
- return t;
- }
- return Nullch;
- }
-
- /* copy a string to a safe spot */
-
- char *
- savestr(str)
- char *str;
- {
- register char *newaddr = safemalloc((MEM_SIZE)(strlen(str)+1));
-
- (void)strcpy(newaddr,str);
- return newaddr;
- }
-
- /* grow a static string to at least a certain length */
-
- void
- growstr(strptr,curlen,newlen)
- char **strptr;
- int *curlen;
- int newlen;
- {
- if (newlen > *curlen) { /* need more room? */
- if (*curlen)
- *strptr = saferealloc(*strptr,(MEM_SIZE)newlen);
- else
- *strptr = safemalloc((MEM_SIZE)newlen);
- *curlen = newlen;
- }
- }
-
- /*VARARGS1*/
- void
- croak(pat,a1,a2,a3,a4)
- char *pat;
- int a1,a2,a3,a4;
- {
- fprintf(stderr,pat,a1,a2,a3,a4);
- exit(1);
- }
-
- /*VARARGS1*/
- void
- fatal(pat,a1,a2,a3,a4)
- char *pat;
- int a1,a2,a3,a4;
- {
- fprintf(stderr,pat,a1,a2,a3,a4);
- exit(1);
- }
-
- /*VARARGS1*/
- void
- warn(pat,a1,a2,a3,a4)
- char *pat;
- int a1,a2,a3,a4;
- {
- fprintf(stderr,pat,a1,a2,a3,a4);
- }
-
-