forked from schacon/perl
/
util.c
1876 lines (1719 loc) · 37.3 KB
/
util.c
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/* util.c
*
* Copyright (c) 1991-1994, 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.
*
*/
/*
* "Very useful, no doubt, that was to Saruman; yet it seems that he was
* not content." --Gandalf
*/
#include "EXTERN.h"
#include "perl.h"
#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
#include <signal.h>
#endif
/* XXX If this causes problems, set i_unistd=undef in the hint file. */
#ifdef I_UNISTD
# include <unistd.h>
#endif
#ifdef I_VFORK
# include <vfork.h>
#endif
/* Put this after #includes because fork and vfork prototypes may
conflict.
*/
#ifndef HAS_VFORK
# define vfork fork
#endif
#ifdef I_FCNTL
# include <fcntl.h>
#endif
#ifdef I_SYS_FILE
# include <sys/file.h>
#endif
#define FLUSH
#ifdef LEAKTEST
static void xstat _((void));
#endif
#ifndef safemalloc
/* paranoid version of malloc */
/* NOTE: Do not call the next three routines directly. Use the macros
* in handy.h, so that we can easily redefine everything to do tracking of
* allocated hunks back to the original New to track down any memory leaks.
* XXX This advice seems to be widely ignored :-( --AD August 1996.
*/
Malloc_t
safemalloc(size)
#ifdef MSDOS
unsigned long size;
#else
MEM_SIZE size;
#endif /* MSDOS */
{
Malloc_t ptr;
#ifdef MSDOS
if (size > 0xffff) {
PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
my_exit(1);
}
#endif /* MSDOS */
#ifdef DEBUGGING
if ((long)size < 0)
croak("panic: malloc");
#endif
ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
#if !(defined(I286) || defined(atarist))
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
#else
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
#endif
if (ptr != Nullch)
return ptr;
else if (nomemok)
return Nullch;
else {
PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
my_exit(1);
}
/*NOTREACHED*/
}
/* paranoid version of realloc */
Malloc_t
saferealloc(where,size)
Malloc_t where;
#ifndef MSDOS
MEM_SIZE size;
#else
unsigned long size;
#endif /* MSDOS */
{
Malloc_t ptr;
#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
Malloc_t realloc();
#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
#ifdef MSDOS
if (size > 0xffff) {
PerlIO_printf(PerlIO_stderr(), "Reallocation too large: %lx\n", size) FLUSH;
my_exit(1);
}
#endif /* MSDOS */
if (!where)
croak("Null realloc");
#ifdef DEBUGGING
if ((long)size < 0)
croak("panic: realloc");
#endif
ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
#if !(defined(I286) || defined(atarist))
DEBUG_m( {
PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
} )
#else
DEBUG_m( {
PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
} )
#endif
if (ptr != Nullch)
return ptr;
else if (nomemok)
return Nullch;
else {
PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
my_exit(1);
}
/*NOTREACHED*/
}
/* safe version of free */
void
safefree(where)
Malloc_t where;
{
#if !(defined(I286) || defined(atarist))
DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",where,an++));
#else
DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",where,an++));
#endif
if (where) {
/*SUPPRESS 701*/
free(where);
}
}
/* safe version of calloc */
Malloc_t
safecalloc(count, size)
MEM_SIZE count;
MEM_SIZE size;
{
Malloc_t ptr;
#ifdef MSDOS
if (size * count > 0xffff) {
PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size * count) FLUSH;
my_exit(1);
}
#endif /* MSDOS */
#ifdef DEBUGGING
if ((long)size < 0 || (long)count < 0)
croak("panic: calloc");
#endif
#if !(defined(I286) || defined(atarist))
DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
#else
DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
#endif
size *= count;
ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
if (ptr != Nullch) {
memset((void*)ptr, 0, size);
return ptr;
}
else if (nomemok)
return Nullch;
else {
PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
my_exit(1);
}
/*NOTREACHED*/
}
#endif /* !safemalloc */
#ifdef LEAKTEST
#define ALIGN sizeof(long)
Malloc_t
safexmalloc(x,size)
I32 x;
MEM_SIZE size;
{
register Malloc_t where;
where = safemalloc(size + ALIGN);
xcount[x]++;
where[0] = x % 100;
where[1] = x / 100;
return where + ALIGN;
}
Malloc_t
safexrealloc(where,size)
Malloc_t where;
MEM_SIZE size;
{
register Malloc_t new = saferealloc(where - ALIGN, size + ALIGN);
return new + ALIGN;
}
void
safexfree(where)
Malloc_t where;
{
I32 x;
if (!where)
return;
where -= ALIGN;
x = where[0] + 100 * where[1];
xcount[x]--;
safefree(where);
}
Malloc_t
safexcalloc(x,count,size)
I32 x;
MEM_SIZE count;
MEM_SIZE size;
{
register Malloc_t where;
where = safexmalloc(x, size * count + ALIGN);
xcount[x]++;
memset((void*)where + ALIGN, 0, size * count);
where[0] = x % 100;
where[1] = x / 100;
return where + ALIGN;
}
static void
xstat()
{
register I32 i;
for (i = 0; i < MAXXCOUNT; i++) {
if (xcount[i] > lastxcount[i]) {
PerlIO_printf(PerlIO_stderr(),"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
lastxcount[i] = xcount[i];
}
}
}
#endif /* LEAKTEST */
/* copy a string up to some (non-backslashed) delimiter, if any */
char *
cpytill(to,from,fromend,delim,retlen)
register char *to;
register char *from;
register char *fromend;
register int delim;
I32 *retlen;
{
char *origto = to;
for (; from < fromend; from++,to++) {
if (*from == '\\') {
if (from[1] == delim)
from++;
else if (from[1] == '\\')
*to++ = *from++;
}
else if (*from == delim)
break;
*to = *from;
}
*to = '\0';
*retlen = to - origto;
return from;
}
/* return ptr to little string in big string, NULL if not found */
/* This routine was donated by Corey Satten. */
char *
instr(big, little)
register char *big;
register char *little;
{
register char *s, *x;
register I32 first;
if (!little)
return big;
first = *little++;
if (!first)
return big;
while (*big) {
if (*big++ != first)
continue;
for (x=big,s=little; *s; /**/ ) {
if (!*x)
return Nullch;
if (*s++ != *x++) {
s--;
break;
}
}
if (!*s)
return big-1;
}
return Nullch;
}
/* same as instr but allow embedded nulls */
char *
ninstr(big, bigend, little, lend)
register char *big;
register char *bigend;
char *little;
char *lend;
{
register char *s, *x;
register I32 first = *little;
register char *littleend = lend;
if (!first && little >= littleend)
return big;
if (bigend - big < littleend - little)
return Nullch;
bigend -= littleend - little++;
while (big <= bigend) {
if (*big++ != first)
continue;
for (x=big,s=little; s < littleend; /**/ ) {
if (*s++ != *x++) {
s--;
break;
}
}
if (s >= littleend)
return big-1;
}
return Nullch;
}
/* reverse of the above--find last substring */
char *
rninstr(big, bigend, little, lend)
register char *big;
char *bigend;
char *little;
char *lend;
{
register char *bigbeg;
register char *s, *x;
register I32 first = *little;
register char *littleend = lend;
if (!first && little >= littleend)
return bigend;
bigbeg = big;
big = bigend - (littleend - little++);
while (big >= bigbeg) {
if (*big-- != first)
continue;
for (x=big+2,s=little; s < littleend; /**/ ) {
if (*s++ != *x++) {
s--;
break;
}
}
if (s >= littleend)
return big+1;
}
return Nullch;
}
/* Initialize locale (and the fold[] array).*/
int
perl_init_i18nl10n(printwarn)
int printwarn;
{
int ok = 1;
/* returns
* 1 = set ok or not applicable,
* 0 = fallback to C locale,
* -1 = fallback to C locale failed
*/
#if defined(HAS_SETLOCALE) && defined(LC_CTYPE)
char * lang = getenv("LANG");
char * lc_all = getenv("LC_ALL");
char * lc_ctype = getenv("LC_CTYPE");
int i;
if (setlocale(LC_CTYPE, "") == NULL && (lc_all || lc_ctype || lang)) {
char *doit;
if (printwarn > 1 ||
printwarn && (!(doit = getenv("PERL_BADLANG")) || atoi(doit))) {
PerlIO_printf(PerlIO_stderr(), "warning: setlocale(LC_CTYPE, \"\") failed.\n");
PerlIO_printf(PerlIO_stderr(),
"warning: LC_ALL = \"%s\", LC_CTYPE = \"%s\", LANG = \"%s\",\n",
lc_all ? lc_all : "(null)",
lc_ctype ? lc_ctype : "(null)",
lang ? lang : "(null)"
);
PerlIO_printf(PerlIO_stderr(), "warning: falling back to the \"C\" locale.\n");
}
ok = 0;
if (setlocale(LC_CTYPE, "C") == NULL)
ok = -1;
}
for (i = 0; i < 256; i++) {
if (isUPPER(i)) fold[i] = toLOWER(i);
else if (isLOWER(i)) fold[i] = toUPPER(i);
else fold[i] = i;
}
#endif
return ok;
}
void
fbm_compile(sv, iflag)
SV *sv;
I32 iflag;
{
register unsigned char *s;
register unsigned char *table;
register U32 i;
register U32 len = SvCUR(sv);
I32 rarest = 0;
U32 frequency = 256;
if (len > 255)
return; /* can't have offsets that big */
Sv_Grow(sv,len+258);
table = (unsigned char*)(SvPVX(sv) + len + 1);
s = table - 2;
for (i = 0; i < 256; i++) {
table[i] = len;
}
i = 0;
while (s >= (unsigned char*)(SvPVX(sv)))
{
if (table[*s] == len) {
#ifndef pdp11
if (iflag)
table[*s] = table[fold[*s]] = i;
#else
if (iflag) {
I32 j;
j = fold[*s];
table[j] = i;
table[*s] = i;
}
#endif /* pdp11 */
else
table[*s] = i;
}
s--,i++;
}
sv_upgrade(sv, SVt_PVBM);
sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
SvVALID_on(sv);
s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
if (iflag) {
register U32 tmp, foldtmp;
SvCASEFOLD_on(sv);
for (i = 0; i < len; i++) {
tmp=freq[s[i]];
foldtmp=freq[fold[s[i]]];
if (tmp < frequency && foldtmp < frequency) {
rarest = i;
/* choose most frequent among the two */
frequency = (tmp > foldtmp) ? tmp : foldtmp;
}
}
}
else {
for (i = 0; i < len; i++) {
if (freq[s[i]] < frequency) {
rarest = i;
frequency = freq[s[i]];
}
}
}
BmRARE(sv) = s[rarest];
BmPREVIOUS(sv) = rarest;
DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
}
char *
fbm_instr(big, bigend, littlestr)
unsigned char *big;
register unsigned char *bigend;
SV *littlestr;
{
register unsigned char *s;
register I32 tmp;
register I32 littlelen;
register unsigned char *little;
register unsigned char *table;
register unsigned char *olds;
register unsigned char *oldlittle;
if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
STRLEN len;
char *l = SvPV(littlestr,len);
if (!len)
return (char*)big;
return ninstr((char*)big,(char*)bigend, l, l + len);
}
littlelen = SvCUR(littlestr);
if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
if (littlelen > bigend - big)
return Nullch;
little = (unsigned char*)SvPVX(littlestr);
if (SvCASEFOLD(littlestr)) { /* oops, fake it */
big = bigend - littlelen; /* just start near end */
if (bigend[-1] == '\n' && little[littlelen-1] != '\n')
big--;
}
else {
s = bigend - littlelen;
if (*s == *little && memcmp((char*)s,(char*)little,littlelen)==0)
return (char*)s; /* how sweet it is */
else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
&& s > big) {
s--;
if (*s == *little && memcmp((char*)s,(char*)little,littlelen)==0)
return (char*)s;
}
return Nullch;
}
}
table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
if (--littlelen >= bigend - big)
return Nullch;
s = big + littlelen;
oldlittle = little = table - 2;
if (SvCASEFOLD(littlestr)) { /* case insensitive? */
if (s < bigend) {
top1:
/*SUPPRESS 560*/
if (tmp = table[*s]) {
#ifdef POINTERRIGOR
if (bigend - s > tmp) {
s += tmp;
goto top1;
}
#else
if ((s += tmp) < bigend)
goto top1;
#endif
return Nullch;
}
else {
tmp = littlelen; /* less expensive than calling strncmp() */
olds = s;
while (tmp--) {
if (*--s == *--little || fold[*s] == *little)
continue;
s = olds + 1; /* here we pay the price for failure */
little = oldlittle;
if (s < bigend) /* fake up continue to outer loop */
goto top1;
return Nullch;
}
return (char *)s;
}
}
}
else {
if (s < bigend) {
top2:
/*SUPPRESS 560*/
if (tmp = table[*s]) {
#ifdef POINTERRIGOR
if (bigend - s > tmp) {
s += tmp;
goto top2;
}
#else
if ((s += tmp) < bigend)
goto top2;
#endif
return Nullch;
}
else {
tmp = littlelen; /* less expensive than calling strncmp() */
olds = s;
while (tmp--) {
if (*--s == *--little)
continue;
s = olds + 1; /* here we pay the price for failure */
little = oldlittle;
if (s < bigend) /* fake up continue to outer loop */
goto top2;
return Nullch;
}
return (char *)s;
}
}
}
return Nullch;
}
char *
screaminstr(bigstr, littlestr)
SV *bigstr;
SV *littlestr;
{
register unsigned char *s, *x;
register unsigned char *big;
register I32 pos;
register I32 previous;
register I32 first;
register unsigned char *little;
register unsigned char *bigend;
register unsigned char *littleend;
if ((pos = screamfirst[BmRARE(littlestr)]) < 0)
return Nullch;
little = (unsigned char *)(SvPVX(littlestr));
littleend = little + SvCUR(littlestr);
first = *little++;
previous = BmPREVIOUS(littlestr);
big = (unsigned char *)(SvPVX(bigstr));
bigend = big + SvCUR(bigstr);
while (pos < previous) {
if (!(pos += screamnext[pos]))
return Nullch;
}
#ifdef POINTERRIGOR
if (SvCASEFOLD(littlestr)) { /* case insignificant? */
do {
if (big[pos-previous] != first && big[pos-previous] != fold[first])
continue;
for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
if (x >= bigend)
return Nullch;
if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) {
s--;
break;
}
}
if (s == littleend)
return (char *)(big+pos-previous);
} while (
pos += screamnext[pos] /* does this goof up anywhere? */
);
}
else {
do {
if (big[pos-previous] != first)
continue;
for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
if (x >= bigend)
return Nullch;
if (*s++ != *x++) {
s--;
break;
}
}
if (s == littleend)
return (char *)(big+pos-previous);
} while ( pos += screamnext[pos] );
}
#else /* !POINTERRIGOR */
big -= previous;
if (SvCASEFOLD(littlestr)) { /* case insignificant? */
do {
if (big[pos] != first && big[pos] != fold[first])
continue;
for (x=big+pos+1,s=little; s < littleend; /**/ ) {
if (x >= bigend)
return Nullch;
if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) {
s--;
break;
}
}
if (s == littleend)
return (char *)(big+pos);
} while (
pos += screamnext[pos] /* does this goof up anywhere? */
);
}
else {
do {
if (big[pos] != first)
continue;
for (x=big+pos+1,s=little; s < littleend; /**/ ) {
if (x >= bigend)
return Nullch;
if (*s++ != *x++) {
s--;
break;
}
}
if (s == littleend)
return (char *)(big+pos);
} while (
pos += screamnext[pos]
);
}
#endif /* POINTERRIGOR */
return Nullch;
}
I32
ibcmp(a,b,len)
register U8 *a;
register U8 *b;
register I32 len;
{
while (len--) {
if (*a == *b) {
a++,b++;
continue;
}
if (fold[*a++] == *b++)
continue;
return 1;
}
return 0;
}
/* copy a string to a safe spot */
char *
savepv(sv)
char *sv;
{
register char *newaddr;
New(902,newaddr,strlen(sv)+1,char);
(void)strcpy(newaddr,sv);
return newaddr;
}
/* same thing but with a known length */
char *
savepvn(sv, len)
char *sv;
register I32 len;
{
register char *newaddr;
New(903,newaddr,len+1,char);
Copy(sv,newaddr,len,char); /* might not be null terminated */
newaddr[len] = '\0'; /* is now */
return newaddr;
}
#if !defined(I_STDARG) && !defined(I_VARARGS)
/*
* Fallback on the old hackers way of doing varargs
*/
/*VARARGS1*/
char *
mess(pat,a1,a2,a3,a4)
char *pat;
long a1, a2, a3, a4;
{
char *s;
char *s_start;
I32 usermess = strEQ(pat,"%s");
SV *tmpstr;
s = s_start = buf;
if (usermess) {
tmpstr = sv_newmortal();
sv_setpv(tmpstr, (char*)a1);
*s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1];
}
else {
(void)sprintf(s,pat,a1,a2,a3,a4);
s += strlen(s);
}
if (s[-1] != '\n') {
if (dirty)
strcpy(s, " during global destruction.\n");
else {
if (curcop->cop_line) {
(void)sprintf(s," at %s line %ld",
SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line);
s += strlen(s);
}
if (GvIO(last_in_gv) &&
IoLINES(GvIOp(last_in_gv)) ) {
(void)sprintf(s,", <%s> %s %ld",
last_in_gv == argvgv ? "" : GvENAME(last_in_gv),
strEQ(rs,"\n") ? "line" : "chunk",
(long)IoLINES(GvIOp(last_in_gv)));
s += strlen(s);
}
(void)strcpy(s,".\n");
s += 2;
}
if (usermess)
sv_catpv(tmpstr,buf+1);
}
if (s - s_start >= sizeof(buf)) { /* Ooops! */
if (usermess)
PerlIO_puts(PerlIO_stderr(), SvPVX(tmpstr));
else
PerlIO_puts(PerlIO_stderr(), buf);
PerlIO_puts(PerlIO_stderr(),"panic: message overflow - memory corrupted!\n");
my_exit(1);
}
if (usermess)
return SvPVX(tmpstr);
else
return buf;
}
/*VARARGS1*/
void croak(pat,a1,a2,a3,a4)
char *pat;
long a1, a2, a3, a4;
{
char *tmps;
char *message;
HV *stash;
GV *gv;
CV *cv;
message = mess(pat,a1,a2,a3,a4);
if (diehook) {
SV *olddiehook = diehook;
diehook = Nullsv; /* sv_2cv might call croak() */
cv = sv_2cv(olddiehook, &stash, &gv, 0);
diehook = olddiehook;
if (cv && !CvDEPTH(cv)) {
dSP;
PUSHMARK(sp);
EXTEND(sp, 1);
PUSHs(sv_2mortal(newSVpv(message,0)));
PUTBACK;
perl_call_sv((SV*)cv, G_DISCARD);
}
}
if (in_eval) {
restartop = die_where(message);
Siglongjmp(top_env, 3);
}
PerlIO_puts(PerlIO_stderr(),message);
(void)PerlIO_flush(PerlIO_stderr());
if (e_tmpname) {
if (e_fp) {
PerlIO_close(e_fp);
e_fp = Nullfp;
}
(void)UNLINK(e_tmpname);
Safefree(e_tmpname);
e_tmpname = Nullch;
}
statusvalue = SHIFTSTATUS(statusvalue);
#ifdef VMS
my_exit((U32)vaxc$errno?vaxc$errno:errno?errno:statusvalue?statusvalue:SS$_ABORT);
#else
my_exit((U32)((errno&255)?errno:((statusvalue&255)?statusvalue:255)));
#endif
}
/*VARARGS1*/
void warn(pat,a1,a2,a3,a4)
char *pat;
long a1, a2, a3, a4;
{
char *message;
SV *sv;
HV *stash;
GV *gv;
CV *cv;
message = mess(pat,a1,a2,a3,a4);
if (warnhook) {
SV *oldwarnhook = warnhook;
warnhook = Nullsv; /* sv_2cv might end up calling warn() */
cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
warnhook = oldwarnhook;
if (cv && !CvDEPTH(cv)) {
dSP;
PUSHMARK(sp);
EXTEND(sp, 1);
PUSHs(sv_2mortal(newSVpv(message,0)));
PUTBACK;
perl_call_sv((SV*)cv, G_DISCARD);
return;
}
}
PerlIO_puts(PerlIO_stderr(),message);
#ifdef LEAKTEST
DEBUG_L(xstat());
#endif
(void)PerlIO_flush(PerlIO_stderr());
}
#else /* !defined(I_STDARG) && !defined(I_VARARGS) */
#ifdef I_STDARG
char *
mess(char *pat, va_list *args)
#else
/*VARARGS0*/
char *
mess(pat, args)
char *pat;
va_list *args;
#endif
{
char *s;
char *s_start;
SV *tmpstr;
I32 usermess;
#ifndef HAS_VPRINTF
#ifdef USE_CHAR_VSPRINTF
char *vsprintf();
#else
I32 vsprintf();
#endif
#endif
s = s_start = buf;
usermess = strEQ(pat, "%s");
if (usermess) {
tmpstr = sv_newmortal();
sv_setpv(tmpstr, va_arg(*args, char *));
*s++ = SvPVX(tmpstr)[SvCUR(tmpstr)-1];
}
else {
(void) vsprintf(s,pat,*args);
s += strlen(s);
}
va_end(*args);
if (s[-1] != '\n') {
if (dirty)
strcpy(s, " during global destruction.\n");
else {
if (curcop->cop_line) {
(void)sprintf(s," at %s line %ld",
SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line);
s += strlen(s);
}
if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
bool line_mode = (RsSIMPLE(rs) &&
SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
(void)sprintf(s,", <%s> %s %ld",
last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
line_mode ? "line" : "chunk",
(long)IoLINES(GvIOp(last_in_gv)));
s += strlen(s);
}
(void)strcpy(s,".\n");
s += 2;
}
if (usermess)
sv_catpv(tmpstr,buf+1);