-/* $Header: util.c,v 2.0 88/06/05 00:16:07 root Exp $
+/* util.c
*
- * $Log: util.c,v $
- * Revision 2.0 88/06/05 00:16:07 root
- * Baseline version 2.0.
- *
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
+ * 2000, 2001, 2005 by Larry Wall and others
+ *
+ * You may distribute under the terms of either the GNU General Public
+ * License or the Artistic License, as specified in the README file.
*/
-#include <stdio.h>
-
-#include "handy.h"
#include "EXTERN.h"
#include "a2p.h"
#include "INTERN.h"
#include "util.h"
+#include <stdarg.h>
#define FLUSH
-#define MEM_SIZE unsigned int
-static char nomem[] = "Out of memory!\n";
+static const char nomem[] = "Out of memory!\n";
/* paranoid version of malloc */
-static int an = 0;
-char *
-safemalloc(size)
-MEM_SIZE size;
+Malloc_t
+safemalloc(MEM_SIZE size)
{
- char *ptr;
- char *malloc();
+ Malloc_t ptr;
- ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
+ /* malloc(0) is NASTY on some systems */
+ ptr = malloc(size ? size : 1);
#ifdef DEBUGGING
if (debug & 128)
- fprintf(stderr,"0x%x: (%05d) malloc %d bytes\n",ptr,an++,size);
+ fprintf(stderr,"0x%lx: (%05d) malloc %ld bytes\n",(unsigned long)ptr,
+ an++,(long)size);
#endif
if (ptr != Nullch)
return ptr;
exit(1);
}
/*NOTREACHED*/
+ return 0;
}
/* paranoid version of realloc */
-char *
-saferealloc(where,size)
-char *where;
-MEM_SIZE size;
+Malloc_t
+saferealloc(Malloc_t where, MEM_SIZE size)
{
- char *ptr;
- char *realloc();
+ Malloc_t ptr;
- ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
+ /* realloc(0) is NASTY on some systems */
+ ptr = realloc(where, size ? size : 1);
#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);
+ fprintf(stderr,"0x%lx: (%05d) rfree\n",(unsigned long)where,an++);
+ fprintf(stderr,"0x%lx: (%05d) realloc %ld bytes\n",(unsigned long)ptr,an++,(long)size);
}
#endif
if (ptr != Nullch)
exit(1);
}
/*NOTREACHED*/
+ return 0;
}
/* safe version of free */
-safefree(where)
-char *where;
+Free_t
+safefree(Malloc_t where)
{
#ifdef DEBUGGING
if (debug & 128)
- fprintf(stderr,"0x%x: (%05d) free\n",where,an++);
+ fprintf(stderr,"0x%lx: (%05d) free\n",(unsigned long)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;
-}
-
-#ifdef undef
-/* safe version of string concatenate, with \n deletion and space padding */
-
-char *
-safecat(to,from,len)
-char *to;
-register char *from;
-register int len;
-{
- register char *dest = to;
-
- len--; /* leave room for null */
- if (*dest) {
- while (len && *dest++) len--;
- if (len) {
- len--;
- *(dest-1) = ' ';
- }
- }
- if (from != Nullch)
- while (len && (*dest++ = *from++)) len--;
- if (len)
- dest--;
- if (*(dest-1) == '\n')
- dest--;
- *dest = '\0';
- return to;
-}
-#endif
-
/* copy a string up to some (non-backslashed) delimiter, if any */
char *
-cpytill(to,from,delim)
-register char *to, *from;
-register int delim;
+cpytill(register char *to, register char *from, register int delim)
{
for (; *from; from++,to++) {
if (*from == '\\') {
char *
-cpy2(to,from,delim)
-register char *to, *from;
-register int delim;
+cpy2(register char *to, register char *from, register int delim)
{
for (; *from; from++,to++) {
if (*from == '\\')
/* return ptr to little string in big string, NULL if not found */
char *
-instr(big, little)
-char *big, *little;
-
+instr(char *big, const char *little)
{
- register char *t, *s, *x;
+ register char *t, *x;
+ register const char *s;
for (t = big; *t; t++) {
for (x=t,s=little; *s; x++,s++) {
/* copy a string to a safe spot */
char *
-savestr(str)
-char *str;
+savestr(const char *str)
{
- register char *newaddr = safemalloc((MEM_SIZE)(strlen(str)+1));
+ register char * const newaddr = (char *) 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;
+growstr(char **strptr, int *curlen, int newlen)
{
if (newlen > *curlen) { /* need more room? */
if (*curlen)
- *strptr = saferealloc(*strptr,(MEM_SIZE)newlen);
+ *strptr = (char *) saferealloc(*strptr,(MEM_SIZE)newlen);
else
- *strptr = safemalloc((MEM_SIZE)newlen);
+ *strptr = (char *) safemalloc((MEM_SIZE)newlen);
*curlen = newlen;
}
}
-/*VARARGS1*/
-fatal(pat,a1,a2,a3,a4)
-char *pat;
+void
+fatal(const char *pat,...)
{
+#if defined(HAS_VPRINTF)
+ va_list args;
+
+ va_start(args, pat);
+ vfprintf(stderr,pat,args);
+ va_end(args);
+#else
fprintf(stderr,pat,a1,a2,a3,a4);
+#endif
exit(1);
}
-static bool firstsetenv = TRUE;
-extern char **environ;
-
+#if defined(DARWIN)
+__private_extern__ /* warn() conflicts with libc */
+#endif
void
-setenv(nam,val)
-char *nam, *val;
+warn(const char *pat,...)
{
- register int i=envix(nam); /* where does it go? */
+#if defined(HAS_VPRINTF)
+ va_list args;
- if (!environ[i]) { /* does not exist yet */
- if (firstsetenv) { /* need we copy environment? */
- int j;
-#ifndef lint
- char **tmpenv = (char**) /* point our wand at memory */
- safemalloc((i+2) * sizeof(char*));
+ va_start(args, pat);
+ vfprintf(stderr,pat,args);
+ va_end(args);
#else
- char **tmpenv = Null(char **);
-#endif /* lint */
-
- firstsetenv = FALSE;
- for (j=0; j<i; j++) /* copy environment */
- tmpenv[j] = environ[j];
- environ = tmpenv; /* tell exec where it is now */
- }
-#ifndef lint
- else
- environ = (char**) saferealloc((char*) environ,
- (i+2) * sizeof(char*));
- /* just expand it a bit */
-#endif /* lint */
- environ[i+1] = Nullch; /* make sure it's null terminated */
- }
- environ[i] = safemalloc(strlen(nam) + strlen(val) + 2);
- /* this may or may not be in */
- /* the old environ structure */
- sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
+ fprintf(stderr,pat,a1,a2,a3,a4);
+#endif
}
-int
-envix(nam)
-char *nam;
-{
- register int i, len = strlen(nam);
-
- for (i = 0; environ[i]; i++) {
- if (strnEQ(environ[i],nam,len) && environ[i][len] == '=')
- break; /* strnEQ must come first to avoid */
- } /* potential SEGV's */
- return i;
-}
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