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freebsd/contrib/perl5/doop.c
Mark Murray fc75d06644 Vendor import Perl 5.6.1
2002-03-16 20:14:30 +00:00

1283 lines
28 KiB
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/* doop.c
*
* Copyright (c) 1991-2001, 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.
*
*/
/*
* "'So that was the job I felt I had to do when I started,' thought Sam."
*/
#include "EXTERN.h"
#define PERL_IN_DOOP_C
#include "perl.h"
#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
#include <signal.h>
#endif
STATIC I32
S_do_trans_simple(pTHX_ SV *sv)
{
U8 *s;
U8 *d;
U8 *send;
U8 *dstart;
I32 matches = 0;
I32 grows = PL_op->op_private & OPpTRANS_GROWS;
STRLEN len;
short *tbl;
I32 ch;
tbl = (short*)cPVOP->op_pv;
if (!tbl)
Perl_croak(aTHX_ "panic: do_trans_simple");
s = (U8*)SvPV(sv, len);
send = s + len;
/* First, take care of non-UTF8 input strings, because they're easy */
if (!SvUTF8(sv)) {
while (s < send) {
if ((ch = tbl[*s]) >= 0) {
matches++;
*s++ = ch;
}
else
s++;
}
SvSETMAGIC(sv);
return matches;
}
/* Allow for expansion: $_="a".chr(400); tr/a/\xFE/, FE needs encoding */
if (grows)
New(0, d, len*2+1, U8);
else
d = s;
dstart = d;
while (s < send) {
STRLEN ulen;
UV c;
/* Need to check this, otherwise 128..255 won't match */
c = utf8_to_uv(s, send - s, &ulen, 0);
if (c < 0x100 && (ch = tbl[c]) >= 0) {
matches++;
if (UTF8_IS_ASCII(ch))
*d++ = ch;
else
d = uv_to_utf8(d,ch);
s += ulen;
}
else { /* No match -> copy */
Copy(s, d, ulen, U8);
d += ulen;
s += ulen;
}
}
if (grows) {
sv_setpvn(sv, (char*)dstart, d - dstart);
Safefree(dstart);
}
else {
*d = '\0';
SvCUR_set(sv, d - dstart);
}
SvUTF8_on(sv);
SvSETMAGIC(sv);
return matches;
}
STATIC I32
S_do_trans_count(pTHX_ SV *sv)/* SPC - OK */
{
U8 *s;
U8 *send;
I32 matches = 0;
STRLEN len;
short *tbl;
tbl = (short*)cPVOP->op_pv;
if (!tbl)
Perl_croak(aTHX_ "panic: do_trans_count");
s = (U8*)SvPV(sv, len);
send = s + len;
if (!SvUTF8(sv))
while (s < send) {
if (tbl[*s++] >= 0)
matches++;
}
else
while (s < send) {
UV c;
STRLEN ulen;
c = utf8_to_uv(s, send - s, &ulen, 0);
if (c < 0x100 && tbl[c] >= 0)
matches++;
s += ulen;
}
return matches;
}
STATIC I32
S_do_trans_complex(pTHX_ SV *sv)/* SPC - NOT OK */
{
U8 *s;
U8 *send;
U8 *d;
U8 *dstart;
I32 isutf8;
I32 matches = 0;
I32 grows = PL_op->op_private & OPpTRANS_GROWS;
STRLEN len;
short *tbl;
I32 ch;
tbl = (short*)cPVOP->op_pv;
if (!tbl)
Perl_croak(aTHX_ "panic: do_trans_complex");
s = (U8*)SvPV(sv, len);
isutf8 = SvUTF8(sv);
send = s + len;
if (!isutf8) {
dstart = d = s;
if (PL_op->op_private & OPpTRANS_SQUASH) {
U8* p = send;
while (s < send) {
if ((ch = tbl[*s]) >= 0) {
*d = ch;
matches++;
if (p != d - 1 || *p != *d)
p = d++;
}
else if (ch == -1) /* -1 is unmapped character */
*d++ = *s;
else if (ch == -2) /* -2 is delete character */
matches++;
s++;
}
}
else {
while (s < send) {
if ((ch = tbl[*s]) >= 0) {
matches++;
*d++ = ch;
}
else if (ch == -1) /* -1 is unmapped character */
*d++ = *s;
else if (ch == -2) /* -2 is delete character */
matches++;
s++;
}
}
*d = '\0';
SvCUR_set(sv, d - dstart);
}
else { /* isutf8 */
if (grows)
New(0, d, len*2+1, U8);
else
d = s;
dstart = d;
#ifdef MACOS_TRADITIONAL
#define comp CoMP /* "comp" is a keyword in some compilers ... */
#endif
if (PL_op->op_private & OPpTRANS_SQUASH) {
U8* p = send;
UV pch = 0xfeedface;
while (s < send) {
STRLEN len;
UV comp = utf8_to_uv_simple(s, &len);
if (comp > 0xff) { /* always unmapped */
Copy(s, d, len, U8);
d += len;
}
else if ((ch = tbl[comp]) >= 0) {
matches++;
if (ch != pch) {
d = uv_to_utf8(d, ch);
pch = ch;
}
s += len;
continue;
}
else if (ch == -1) { /* -1 is unmapped character */
Copy(s, d, len, U8);
d += len;
}
else if (ch == -2) /* -2 is delete character */
matches++;
s += len;
pch = 0xfeedface;
}
}
else {
while (s < send) {
STRLEN len;
UV comp = utf8_to_uv_simple(s, &len);
if (comp > 0xff) { /* always unmapped */
Copy(s, d, len, U8);
d += len;
}
else if ((ch = tbl[comp]) >= 0) {
d = uv_to_utf8(d, ch);
matches++;
}
else if (ch == -1) { /* -1 is unmapped character */
Copy(s, d, len, U8);
d += len;
}
else if (ch == -2) /* -2 is delete character */
matches++;
s += len;
}
}
if (grows) {
sv_setpvn(sv, (char*)dstart, d - dstart);
Safefree(dstart);
}
else {
*d = '\0';
SvCUR_set(sv, d - dstart);
}
SvUTF8_on(sv);
}
SvSETMAGIC(sv);
return matches;
}
STATIC I32
S_do_trans_simple_utf8(pTHX_ SV *sv)/* SPC - OK */
{
U8 *s;
U8 *send;
U8 *d;
U8 *start;
U8 *dstart, *dend;
I32 matches = 0;
I32 grows = PL_op->op_private & OPpTRANS_GROWS;
STRLEN len;
SV* rv = (SV*)cSVOP->op_sv;
HV* hv = (HV*)SvRV(rv);
SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
UV none = svp ? SvUV(*svp) : 0x7fffffff;
UV extra = none + 1;
UV final;
UV uv;
I32 isutf8;
U8 hibit = 0;
s = (U8*)SvPV(sv, len);
isutf8 = SvUTF8(sv);
if (!isutf8) {
U8 *t = s, *e = s + len;
while (t < e)
if ((hibit = UTF8_IS_CONTINUED(*t++)))
break;
if (hibit)
s = bytes_to_utf8(s, &len);
}
send = s + len;
start = s;
svp = hv_fetch(hv, "FINAL", 5, FALSE);
if (svp)
final = SvUV(*svp);
if (grows) {
/* d needs to be bigger than s, in case e.g. upgrading is required */
New(0, d, len*3+UTF8_MAXLEN, U8);
dend = d + len * 3;
dstart = d;
}
else {
dstart = d = s;
dend = d + len;
}
while (s < send) {
if ((uv = swash_fetch(rv, s)) < none) {
s += UTF8SKIP(s);
matches++;
d = uv_to_utf8(d, uv);
}
else if (uv == none) {
int i = UTF8SKIP(s);
Copy(s, d, i, U8);
d += i;
s += i;
}
else if (uv == extra) {
int i = UTF8SKIP(s);
s += i;
matches++;
d = uv_to_utf8(d, final);
}
else
s += UTF8SKIP(s);
if (d > dend) {
STRLEN clen = d - dstart;
STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
if (!grows)
Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
Renew(dstart, nlen+UTF8_MAXLEN, U8);
d = dstart + clen;
dend = dstart + nlen;
}
}
if (grows || hibit) {
sv_setpvn(sv, (char*)dstart, d - dstart);
Safefree(dstart);
if (grows && hibit)
Safefree(start);
}
else {
*d = '\0';
SvCUR_set(sv, d - dstart);
}
SvSETMAGIC(sv);
SvUTF8_on(sv);
if (!isutf8 && !(PL_hints & HINT_UTF8))
sv_utf8_downgrade(sv, TRUE);
return matches;
}
STATIC I32
S_do_trans_count_utf8(pTHX_ SV *sv)/* SPC - OK */
{
U8 *s;
U8 *start, *send;
I32 matches = 0;
STRLEN len;
SV* rv = (SV*)cSVOP->op_sv;
HV* hv = (HV*)SvRV(rv);
SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
UV none = svp ? SvUV(*svp) : 0x7fffffff;
UV uv;
U8 hibit = 0;
s = (U8*)SvPV(sv, len);
if (!SvUTF8(sv)) {
U8 *t = s, *e = s + len;
while (t < e)
if ((hibit = !UTF8_IS_ASCII(*t++)))
break;
if (hibit)
start = s = bytes_to_utf8(s, &len);
}
send = s + len;
while (s < send) {
if ((uv = swash_fetch(rv, s)) < none)
matches++;
s += UTF8SKIP(s);
}
if (hibit)
Safefree(start);
return matches;
}
STATIC I32
S_do_trans_complex_utf8(pTHX_ SV *sv) /* SPC - NOT OK */
{
U8 *s;
U8 *start, *send;
U8 *d;
I32 matches = 0;
I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
I32 del = PL_op->op_private & OPpTRANS_DELETE;
I32 grows = PL_op->op_private & OPpTRANS_GROWS;
SV* rv = (SV*)cSVOP->op_sv;
HV* hv = (HV*)SvRV(rv);
SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
UV none = svp ? SvUV(*svp) : 0x7fffffff;
UV extra = none + 1;
UV final;
UV uv;
STRLEN len;
U8 *dstart, *dend;
I32 isutf8;
U8 hibit = 0;
s = (U8*)SvPV(sv, len);
isutf8 = SvUTF8(sv);
if (!isutf8) {
U8 *t = s, *e = s + len;
while (t < e)
if ((hibit = !UTF8_IS_ASCII(*t++)))
break;
if (hibit)
s = bytes_to_utf8(s, &len);
}
send = s + len;
start = s;
svp = hv_fetch(hv, "FINAL", 5, FALSE);
if (svp)
final = SvUV(*svp);
if (grows) {
/* d needs to be bigger than s, in case e.g. upgrading is required */
New(0, d, len*3+UTF8_MAXLEN, U8);
dend = d + len * 3;
dstart = d;
}
else {
dstart = d = s;
dend = d + len;
}
if (squash) {
UV puv = 0xfeedface;
while (s < send) {
uv = swash_fetch(rv, s);
if (d > dend) {
STRLEN clen = d - dstart;
STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
if (!grows)
Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
Renew(dstart, nlen+UTF8_MAXLEN, U8);
d = dstart + clen;
dend = dstart + nlen;
}
if (uv < none) {
matches++;
if (uv != puv) {
d = uv_to_utf8(d, uv);
puv = uv;
}
s += UTF8SKIP(s);
continue;
}
else if (uv == none) { /* "none" is unmapped character */
int i = UTF8SKIP(s);
Copy(s, d, i, U8);
d += i;
s += i;
puv = 0xfeedface;
continue;
}
else if (uv == extra && !del) {
matches++;
if (uv != puv) {
d = uv_to_utf8(d, final);
puv = final;
}
s += UTF8SKIP(s);
continue;
}
matches++; /* "none+1" is delete character */
s += UTF8SKIP(s);
}
}
else {
while (s < send) {
uv = swash_fetch(rv, s);
if (d > dend) {
STRLEN clen = d - dstart;
STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
if (!grows)
Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
Renew(dstart, nlen+UTF8_MAXLEN, U8);
d = dstart + clen;
dend = dstart + nlen;
}
if (uv < none) {
matches++;
d = uv_to_utf8(d, uv);
s += UTF8SKIP(s);
continue;
}
else if (uv == none) { /* "none" is unmapped character */
int i = UTF8SKIP(s);
Copy(s, d, i, U8);
d += i;
s += i;
continue;
}
else if (uv == extra && !del) {
matches++;
d = uv_to_utf8(d, final);
s += UTF8SKIP(s);
continue;
}
matches++; /* "none+1" is delete character */
s += UTF8SKIP(s);
}
}
if (grows || hibit) {
sv_setpvn(sv, (char*)dstart, d - dstart);
Safefree(dstart);
if (grows && hibit)
Safefree(start);
}
else {
*d = '\0';
SvCUR_set(sv, d - dstart);
}
SvUTF8_on(sv);
if (!isutf8 && !(PL_hints & HINT_UTF8))
sv_utf8_downgrade(sv, TRUE);
SvSETMAGIC(sv);
return matches;
}
I32
Perl_do_trans(pTHX_ SV *sv)
{
STRLEN len;
I32 hasutf = (PL_op->op_private &
(OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
Perl_croak(aTHX_ PL_no_modify);
(void)SvPV(sv, len);
if (!len)
return 0;
if (!SvPOKp(sv))
(void)SvPV_force(sv, len);
if (!(PL_op->op_private & OPpTRANS_IDENTICAL))
(void)SvPOK_only_UTF8(sv);
DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
switch (PL_op->op_private & ~hasutf & 63) {
case 0:
if (hasutf)
return do_trans_simple_utf8(sv);
else
return do_trans_simple(sv);
case OPpTRANS_IDENTICAL:
if (hasutf)
return do_trans_count_utf8(sv);
else
return do_trans_count(sv);
default:
if (hasutf)
return do_trans_complex_utf8(sv);
else
return do_trans_complex(sv);
}
}
void
Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
{
SV **oldmark = mark;
register I32 items = sp - mark;
register STRLEN len;
STRLEN delimlen;
register char *delim = SvPV(del, delimlen);
STRLEN tmplen;
mark++;
len = (items > 0 ? (delimlen * (items - 1) ) : 0);
(void)SvUPGRADE(sv, SVt_PV);
if (SvLEN(sv) < len + items) { /* current length is way too short */
while (items-- > 0) {
if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
SvPV(*mark, tmplen);
len += tmplen;
}
mark++;
}
SvGROW(sv, len + 1); /* so try to pre-extend */
mark = oldmark;
items = sp - mark;
++mark;
}
if (items-- > 0) {
sv_setpv(sv, "");
if (*mark)
sv_catsv(sv, *mark);
mark++;
}
else
sv_setpv(sv,"");
if (delimlen) {
for (; items > 0; items--,mark++) {
sv_catsv(sv,del);
sv_catsv(sv,*mark);
}
}
else {
for (; items > 0; items--,mark++)
sv_catsv(sv,*mark);
}
SvSETMAGIC(sv);
}
void
Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
{
STRLEN patlen;
char *pat = SvPV(*sarg, patlen);
bool do_taint = FALSE;
sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
SvSETMAGIC(sv);
if (do_taint)
SvTAINTED_on(sv);
}
/* currently converts input to bytes if possible, but doesn't sweat failure */
UV
Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
{
STRLEN srclen, len;
unsigned char *s = (unsigned char *) SvPV(sv, srclen);
UV retnum = 0;
if (offset < 0)
return retnum;
if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
Perl_croak(aTHX_ "Illegal number of bits in vec");
if (SvUTF8(sv))
(void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
offset *= size; /* turn into bit offset */
len = (offset + size + 7) / 8; /* required number of bytes */
if (len > srclen) {
if (size <= 8)
retnum = 0;
else {
offset >>= 3; /* turn into byte offset */
if (size == 16) {
if (offset >= srclen)
retnum = 0;
else
retnum = (UV) s[offset] << 8;
}
else if (size == 32) {
if (offset >= srclen)
retnum = 0;
else if (offset + 1 >= srclen)
retnum =
((UV) s[offset ] << 24);
else if (offset + 2 >= srclen)
retnum =
((UV) s[offset ] << 24) +
((UV) s[offset + 1] << 16);
else
retnum =
((UV) s[offset ] << 24) +
((UV) s[offset + 1] << 16) +
( s[offset + 2] << 8);
}
#ifdef UV_IS_QUAD
else if (size == 64) {
if (ckWARN(WARN_PORTABLE))
Perl_warner(aTHX_ WARN_PORTABLE,
"Bit vector size > 32 non-portable");
if (offset >= srclen)
retnum = 0;
else if (offset + 1 >= srclen)
retnum =
(UV) s[offset ] << 56;
else if (offset + 2 >= srclen)
retnum =
((UV) s[offset ] << 56) +
((UV) s[offset + 1] << 48);
else if (offset + 3 >= srclen)
retnum =
((UV) s[offset ] << 56) +
((UV) s[offset + 1] << 48) +
((UV) s[offset + 2] << 40);
else if (offset + 4 >= srclen)
retnum =
((UV) s[offset ] << 56) +
((UV) s[offset + 1] << 48) +
((UV) s[offset + 2] << 40) +
((UV) s[offset + 3] << 32);
else if (offset + 5 >= srclen)
retnum =
((UV) s[offset ] << 56) +
((UV) s[offset + 1] << 48) +
((UV) s[offset + 2] << 40) +
((UV) s[offset + 3] << 32) +
( s[offset + 4] << 24);
else if (offset + 6 >= srclen)
retnum =
((UV) s[offset ] << 56) +
((UV) s[offset + 1] << 48) +
((UV) s[offset + 2] << 40) +
((UV) s[offset + 3] << 32) +
((UV) s[offset + 4] << 24) +
((UV) s[offset + 5] << 16);
else
retnum =
((UV) s[offset ] << 56) +
((UV) s[offset + 1] << 48) +
((UV) s[offset + 2] << 40) +
((UV) s[offset + 3] << 32) +
((UV) s[offset + 4] << 24) +
((UV) s[offset + 5] << 16) +
( s[offset + 6] << 8);
}
#endif
}
}
else if (size < 8)
retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
else {
offset >>= 3; /* turn into byte offset */
if (size == 8)
retnum = s[offset];
else if (size == 16)
retnum =
((UV) s[offset] << 8) +
s[offset + 1];
else if (size == 32)
retnum =
((UV) s[offset ] << 24) +
((UV) s[offset + 1] << 16) +
( s[offset + 2] << 8) +
s[offset + 3];
#ifdef UV_IS_QUAD
else if (size == 64) {
if (ckWARN(WARN_PORTABLE))
Perl_warner(aTHX_ WARN_PORTABLE,
"Bit vector size > 32 non-portable");
retnum =
((UV) s[offset ] << 56) +
((UV) s[offset + 1] << 48) +
((UV) s[offset + 2] << 40) +
((UV) s[offset + 3] << 32) +
((UV) s[offset + 4] << 24) +
((UV) s[offset + 5] << 16) +
( s[offset + 6] << 8) +
s[offset + 7];
}
#endif
}
return retnum;
}
/* currently converts input to bytes if possible but doesn't sweat failures,
* although it does ensure that the string it clobbers is not marked as
* utf8-valid any more
*/
void
Perl_do_vecset(pTHX_ SV *sv)
{
SV *targ = LvTARG(sv);
register I32 offset;
register I32 size;
register unsigned char *s;
register UV lval;
I32 mask;
STRLEN targlen;
STRLEN len;
if (!targ)
return;
s = (unsigned char*)SvPV_force(targ, targlen);
if (SvUTF8(targ)) {
/* This is handled by the SvPOK_only below...
if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
SvUTF8_off(targ);
*/
(void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
}
(void)SvPOK_only(targ);
lval = SvUV(sv);
offset = LvTARGOFF(sv);
if (offset < 0)
Perl_croak(aTHX_ "Assigning to negative offset in vec");
size = LvTARGLEN(sv);
if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
Perl_croak(aTHX_ "Illegal number of bits in vec");
offset *= size; /* turn into bit offset */
len = (offset + size + 7) / 8; /* required number of bytes */
if (len > targlen) {
s = (unsigned char*)SvGROW(targ, len + 1);
(void)memzero(s + targlen, len - targlen + 1);
SvCUR_set(targ, len);
}
if (size < 8) {
mask = (1 << size) - 1;
size = offset & 7;
lval &= mask;
offset >>= 3; /* turn into byte offset */
s[offset] &= ~(mask << size);
s[offset] |= lval << size;
}
else {
offset >>= 3; /* turn into byte offset */
if (size == 8)
s[offset ] = lval & 0xff;
else if (size == 16) {
s[offset ] = (lval >> 8) & 0xff;
s[offset+1] = lval & 0xff;
}
else if (size == 32) {
s[offset ] = (lval >> 24) & 0xff;
s[offset+1] = (lval >> 16) & 0xff;
s[offset+2] = (lval >> 8) & 0xff;
s[offset+3] = lval & 0xff;
}
#ifdef UV_IS_QUAD
else if (size == 64) {
if (ckWARN(WARN_PORTABLE))
Perl_warner(aTHX_ WARN_PORTABLE,
"Bit vector size > 32 non-portable");
s[offset ] = (lval >> 56) & 0xff;
s[offset+1] = (lval >> 48) & 0xff;
s[offset+2] = (lval >> 40) & 0xff;
s[offset+3] = (lval >> 32) & 0xff;
s[offset+4] = (lval >> 24) & 0xff;
s[offset+5] = (lval >> 16) & 0xff;
s[offset+6] = (lval >> 8) & 0xff;
s[offset+7] = lval & 0xff;
}
#endif
}
SvSETMAGIC(targ);
}
void
Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
{
STRLEN len;
char *s;
if (SvTYPE(sv) == SVt_PVAV) {
register I32 i;
I32 max;
AV* av = (AV*)sv;
max = AvFILL(av);
for (i = 0; i <= max; i++) {
sv = (SV*)av_fetch(av, i, FALSE);
if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
do_chop(astr, sv);
}
return;
}
else if (SvTYPE(sv) == SVt_PVHV) {
HV* hv = (HV*)sv;
HE* entry;
(void)hv_iterinit(hv);
/*SUPPRESS 560*/
while ((entry = hv_iternext(hv)))
do_chop(astr,hv_iterval(hv,entry));
return;
}
else if (SvREADONLY(sv))
Perl_croak(aTHX_ PL_no_modify);
s = SvPV(sv, len);
if (len && !SvPOK(sv))
s = SvPV_force(sv, len);
if (DO_UTF8(sv)) {
if (s && len) {
char *send = s + len;
char *start = s;
s = send - 1;
while (s > start && UTF8_IS_CONTINUATION(*s))
s--;
if (utf8_to_uv_simple((U8*)s, 0)) {
sv_setpvn(astr, s, send - s);
*s = '\0';
SvCUR_set(sv, s - start);
SvNIOK_off(sv);
SvUTF8_on(astr);
}
}
else
sv_setpvn(astr, "", 0);
}
else if (s && len) {
s += --len;
sv_setpvn(astr, s, 1);
*s = '\0';
SvCUR_set(sv, len);
SvUTF8_off(sv);
SvNIOK_off(sv);
}
else
sv_setpvn(astr, "", 0);
SvSETMAGIC(sv);
}
I32
Perl_do_chomp(pTHX_ register SV *sv)
{
register I32 count;
STRLEN len;
char *s;
if (RsSNARF(PL_rs))
return 0;
if (RsRECORD(PL_rs))
return 0;
count = 0;
if (SvTYPE(sv) == SVt_PVAV) {
register I32 i;
I32 max;
AV* av = (AV*)sv;
max = AvFILL(av);
for (i = 0; i <= max; i++) {
sv = (SV*)av_fetch(av, i, FALSE);
if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
count += do_chomp(sv);
}
return count;
}
else if (SvTYPE(sv) == SVt_PVHV) {
HV* hv = (HV*)sv;
HE* entry;
(void)hv_iterinit(hv);
/*SUPPRESS 560*/
while ((entry = hv_iternext(hv)))
count += do_chomp(hv_iterval(hv,entry));
return count;
}
else if (SvREADONLY(sv))
Perl_croak(aTHX_ PL_no_modify);
s = SvPV(sv, len);
if (len && !SvPOKp(sv))
s = SvPV_force(sv, len);
if (s && len) {
s += --len;
if (RsPARA(PL_rs)) {
if (*s != '\n')
goto nope;
++count;
while (len && s[-1] == '\n') {
--len;
--s;
++count;
}
}
else {
STRLEN rslen;
char *rsptr = SvPV(PL_rs, rslen);
if (rslen == 1) {
if (*s != *rsptr)
goto nope;
++count;
}
else {
if (len < rslen - 1)
goto nope;
len -= rslen - 1;
s -= rslen - 1;
if (memNE(s, rsptr, rslen))
goto nope;
count += rslen;
}
}
*s = '\0';
SvCUR_set(sv, len);
SvNIOK_off(sv);
}
nope:
SvSETMAGIC(sv);
return count;
}
void
Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
{
#ifdef LIBERAL
register long *dl;
register long *ll;
register long *rl;
#endif
register char *dc;
STRLEN leftlen;
STRLEN rightlen;
register char *lc;
register char *rc;
register I32 len;
I32 lensave;
char *lsave;
char *rsave;
bool left_utf = DO_UTF8(left);
bool right_utf = DO_UTF8(right);
I32 needlen;
if (left_utf && !right_utf)
sv_utf8_upgrade(right);
else if (!left_utf && right_utf)
sv_utf8_upgrade(left);
if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
lsave = lc = SvPV(left, leftlen);
rsave = rc = SvPV(right, rightlen);
len = leftlen < rightlen ? leftlen : rightlen;
lensave = len;
if ((left_utf || right_utf) && (sv == left || sv == right)) {
needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
Newz(801, dc, needlen + 1, char);
}
else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
STRLEN n_a;
dc = SvPV_force(sv, n_a);
if (SvCUR(sv) < len) {
dc = SvGROW(sv, len + 1);
(void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
}
if (optype != OP_BIT_AND && (left_utf || right_utf))
dc = SvGROW(sv, leftlen + rightlen + 1);
}
else {
needlen = ((optype == OP_BIT_AND)
? len : (leftlen > rightlen ? leftlen : rightlen));
Newz(801, dc, needlen + 1, char);
(void)sv_usepvn(sv, dc, needlen);
dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
}
SvCUR_set(sv, len);
(void)SvPOK_only(sv);
if (left_utf || right_utf) {
UV duc, luc, ruc;
char *dcsave = dc;
STRLEN lulen = leftlen;
STRLEN rulen = rightlen;
STRLEN ulen;
switch (optype) {
case OP_BIT_AND:
while (lulen && rulen) {
luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
lc += ulen;
lulen -= ulen;
ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
rc += ulen;
rulen -= ulen;
duc = luc & ruc;
dc = (char*)uv_to_utf8((U8*)dc, duc);
}
if (sv == left || sv == right)
(void)sv_usepvn(sv, dcsave, needlen);
SvCUR_set(sv, dc - dcsave);
break;
case OP_BIT_XOR:
while (lulen && rulen) {
luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
lc += ulen;
lulen -= ulen;
ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
rc += ulen;
rulen -= ulen;
duc = luc ^ ruc;
dc = (char*)uv_to_utf8((U8*)dc, duc);
}
goto mop_up_utf;
case OP_BIT_OR:
while (lulen && rulen) {
luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
lc += ulen;
lulen -= ulen;
ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
rc += ulen;
rulen -= ulen;
duc = luc | ruc;
dc = (char*)uv_to_utf8((U8*)dc, duc);
}
mop_up_utf:
if (sv == left || sv == right)
(void)sv_usepvn(sv, dcsave, needlen);
SvCUR_set(sv, dc - dcsave);
if (rulen)
sv_catpvn(sv, rc, rulen);
else if (lulen)
sv_catpvn(sv, lc, lulen);
else
*SvEND(sv) = '\0';
break;
}
SvUTF8_on(sv);
goto finish;
}
else
#ifdef LIBERAL
if (len >= sizeof(long)*4 &&
!((long)dc % sizeof(long)) &&
!((long)lc % sizeof(long)) &&
!((long)rc % sizeof(long))) /* It's almost always aligned... */
{
I32 remainder = len % (sizeof(long)*4);
len /= (sizeof(long)*4);
dl = (long*)dc;
ll = (long*)lc;
rl = (long*)rc;
switch (optype) {
case OP_BIT_AND:
while (len--) {
*dl++ = *ll++ & *rl++;
*dl++ = *ll++ & *rl++;
*dl++ = *ll++ & *rl++;
*dl++ = *ll++ & *rl++;
}
break;
case OP_BIT_XOR:
while (len--) {
*dl++ = *ll++ ^ *rl++;
*dl++ = *ll++ ^ *rl++;
*dl++ = *ll++ ^ *rl++;
*dl++ = *ll++ ^ *rl++;
}
break;
case OP_BIT_OR:
while (len--) {
*dl++ = *ll++ | *rl++;
*dl++ = *ll++ | *rl++;
*dl++ = *ll++ | *rl++;
*dl++ = *ll++ | *rl++;
}
}
dc = (char*)dl;
lc = (char*)ll;
rc = (char*)rl;
len = remainder;
}
#endif
{
switch (optype) {
case OP_BIT_AND:
while (len--)
*dc++ = *lc++ & *rc++;
break;
case OP_BIT_XOR:
while (len--)
*dc++ = *lc++ ^ *rc++;
goto mop_up;
case OP_BIT_OR:
while (len--)
*dc++ = *lc++ | *rc++;
mop_up:
len = lensave;
if (rightlen > len)
sv_catpvn(sv, rsave + len, rightlen - len);
else if (leftlen > len)
sv_catpvn(sv, lsave + len, leftlen - len);
else
*SvEND(sv) = '\0';
break;
}
}
finish:
SvTAINT(sv);
}
OP *
Perl_do_kv(pTHX)
{
dSP;
HV *hv = (HV*)POPs;
HV *keys;
register HE *entry;
SV *tmpstr;
I32 gimme = GIMME_V;
I32 dokeys = (PL_op->op_type == OP_KEYS);
I32 dovalues = (PL_op->op_type == OP_VALUES);
I32 realhv = (SvTYPE(hv) == SVt_PVHV);
if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV)
dokeys = dovalues = TRUE;
if (!hv) {
if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
dTARGET; /* make sure to clear its target here */
if (SvTYPE(TARG) == SVt_PVLV)
LvTARG(TARG) = Nullsv;
PUSHs(TARG);
}
RETURN;
}
keys = realhv ? hv : avhv_keys((AV*)hv);
(void)hv_iterinit(keys); /* always reset iterator regardless */
if (gimme == G_VOID)
RETURN;
if (gimme == G_SCALAR) {
IV i;
dTARGET;
if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
if (SvTYPE(TARG) < SVt_PVLV) {
sv_upgrade(TARG, SVt_PVLV);
sv_magic(TARG, Nullsv, 'k', Nullch, 0);
}
LvTYPE(TARG) = 'k';
if (LvTARG(TARG) != (SV*)keys) {
if (LvTARG(TARG))
SvREFCNT_dec(LvTARG(TARG));
LvTARG(TARG) = SvREFCNT_inc(keys);
}
PUSHs(TARG);
RETURN;
}
if (! SvTIED_mg((SV*)keys, 'P'))
i = HvKEYS(keys);
else {
i = 0;
/*SUPPRESS 560*/
while (hv_iternext(keys)) i++;
}
PUSHi( i );
RETURN;
}
EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
while ((entry = hv_iternext(keys))) {
SPAGAIN;
if (dokeys)
XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
if (dovalues) {
PUTBACK;
tmpstr = realhv ?
hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry);
DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
(unsigned long)HeHASH(entry),
HvMAX(keys)+1,
(unsigned long)(HeHASH(entry) & HvMAX(keys))));
SPAGAIN;
XPUSHs(tmpstr);
}
PUTBACK;
}
return NORMAL;
}
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