char *strend;
I32 global;
I32 r_flags = 0;
- char *truebase;
+ char *truebase; /* Start of string, may be
+ relocated if REx engine
+ copies the string. */
register REGEXP *rx = pm->op_pmregexp;
bool rxtainted;
I32 gimme = GIMME;
/* XXXX What part of this is needed with true \G-support? */
if (global = pm->op_pmflags & PMf_GLOBAL) {
- rx->startp[0] = 0;
+ rx->startp[0] = -1;
if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
MAGIC* mg = mg_find(TARG, 'g');
if (mg && mg->mg_len >= 0) {
if (!(rx->reganch & ROPT_GPOS_SEEN))
- rx->endp[0] = rx->startp[0] = s + mg->mg_len;
+ rx->endp[0] = rx->startp[0] = mg->mg_len;
else if (rx->reganch & ROPT_ANCH_GPOS) {
r_flags |= REXEC_IGNOREPOS;
- rx->endp[0] = rx->startp[0] = s + mg->mg_len;
+ rx->endp[0] = rx->startp[0] = mg->mg_len;
}
minmatch = (mg->mg_flags & MGf_MINMATCH);
update_minmatch = 0;
}
play_it_again:
- if (global && rx->startp[0]) {
- t = s = rx->endp[0];
+ if (global && rx->startp[0] != -1) {
+ t = s = rx->endp[0] + truebase;
if ((s + rx->minlen) > strend)
goto nope;
if (update_minmatch++)
}
if (rx->check_substr) {
if (!(rx->reganch & ROPT_NOSCAN)) { /* Floating checkstring. */
+ SV *c = rx->check_substr;
+
if (r_flags & REXEC_SCREAM) {
I32 p = -1;
char *b;
-
- if (PL_screamfirst[BmRARE(rx->check_substr)] < 0)
+
+ if (PL_screamfirst[BmRARE(c)] < 0
+ && !( BmRARE(c) == '\n' && (BmPREVIOUS(c) == SvCUR(c) - 1)
+ && SvTAIL(c) ))
goto nope;
b = (char*)HOP((U8*)s, rx->check_offset_min);
- if (!(s = screaminstr(TARG, rx->check_substr, b - s, 0, &p, 0)))
+ if (!(s = screaminstr(TARG, c, b - s, 0, &p, 0)))
goto nope;
if ((rx->reganch & ROPT_CHECK_ALL)
- && !PL_sawampersand && !SvTAIL(rx->check_substr))
+ && !PL_sawampersand && !SvTAIL(c))
goto yup;
}
else if (!(s = fbm_instr((unsigned char*)HOP((U8*)s, rx->check_offset_min),
- (unsigned char*)strend,
- rx->check_substr, 0)))
+ (unsigned char*)strend, c,
+ PL_multiline ? FBMrf_MULTILINE : 0)))
goto nope;
else if ((rx->reganch & ROPT_CHECK_ALL) && !PL_sawampersand)
goto yup;
if (s && rx->check_offset_max < s - t) {
- ++BmUSEFUL(rx->check_substr);
+ ++BmUSEFUL(c);
s = (char*)HOP((U8*)s, -rx->check_offset_max);
}
else
else if (!PL_multiline) { /* Anchored near beginning of string. */
I32 slen;
char *b = (char*)HOP((U8*)s, rx->check_offset_min);
- if (*SvPVX(rx->check_substr) != *b
- || ((slen = SvCUR(rx->check_substr)) > 1
- && memNE(SvPVX(rx->check_substr), b, slen)))
- goto nope;
+
+ if (SvTAIL(rx->check_substr)) {
+ slen = SvCUR(rx->check_substr); /* >= 1 */
+
+ if ( strend - b > slen || strend - b < slen - 1 )
+ goto nope;
+ if ( strend - b == slen && strend[-1] != '\n')
+ goto nope;
+ /* Now should match b[0..slen-2] */
+ slen--;
+ if (slen && (*SvPVX(rx->check_substr) != *b
+ || (slen > 1
+ && memNE(SvPVX(rx->check_substr), b, slen))))
+ goto nope;
+ if ((rx->reganch & ROPT_CHECK_ALL) && !PL_sawampersand)
+ goto yup;
+ } else { /* Assume len > 0 */
+ if (*SvPVX(rx->check_substr) != *b
+ || ((slen = SvCUR(rx->check_substr)) > 1
+ && memNE(SvPVX(rx->check_substr), b, slen)))
+ goto nope;
+ if ((rx->reganch & ROPT_CHECK_ALL) && !PL_sawampersand)
+ goto yup;
+ }
}
if (!(rx->reganch & ROPT_NAUGHTY) && --BmUSEFUL(rx->check_substr) < 0
&& rx->check_substr == rx->float_substr) {
for (i = !i; i <= iters; i++) {
PUSHs(sv_newmortal());
/*SUPPRESS 560*/
- if ((s = rx->startp[i]) && rx->endp[i] ) {
- len = rx->endp[i] - s;
+ if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) {
+ len = rx->endp[i] - rx->startp[i];
+ s = rx->startp[i] + truebase;
sv_setpvn(*SP, s, len);
}
}
if (global) {
- truebase = rx->subbeg;
- strend = rx->subend;
- had_zerolen = (rx->startp[0] && rx->startp[0] == rx->endp[0]);
+ had_zerolen = (rx->startp[0] != -1
+ && rx->startp[0] == rx->endp[0]);
PUTBACK; /* EVAL blocks may use stack */
- r_flags |= REXEC_IGNOREPOS;
+ r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST;
goto play_it_again;
}
else if (!iters)
sv_magic(TARG, (SV*)0, 'g', Nullch, 0);
mg = mg_find(TARG, 'g');
}
- if (rx->startp[0]) {
- mg->mg_len = rx->endp[0] - rx->subbeg;
+ if (rx->startp[0] != -1) {
+ mg->mg_len = rx->endp[0];
if (rx->startp[0] == rx->endp[0])
mg->mg_flags |= MGf_MINMATCH;
else
PL_curpm = pm;
if (pm->op_pmflags & PMf_ONCE)
pm->op_pmdynflags |= PMdf_USED;
- Safefree(rx->subbase);
- rx->subbase = Nullch;
+ if (RX_MATCH_COPIED(rx))
+ Safefree(rx->subbeg);
+ RX_MATCH_COPIED_off(rx);
+ rx->subbeg = Nullch;
if (global) {
rx->subbeg = truebase;
- rx->subend = strend;
- rx->startp[0] = s;
- rx->endp[0] = s + SvCUR(rx->check_substr);
+ rx->startp[0] = s - truebase;
+ rx->endp[0] = s - truebase + SvCUR(rx->check_substr);
+ rx->sublen = strend - truebase;
goto gotcha;
- }
+ }
if (PL_sawampersand) {
- char *tmps;
+ I32 off;
- tmps = rx->subbase = savepvn(t, strend-t);
- rx->subbeg = tmps;
- rx->subend = tmps + (strend-t);
- tmps = rx->startp[0] = tmps + (s - t);
- rx->endp[0] = tmps + SvCUR(rx->check_substr);
+ rx->subbeg = savepvn(t, strend - t);
+ rx->sublen = strend - t;
+ RX_MATCH_COPIED_on(rx);
+ off = rx->startp[0] = s - t;
+ rx->endp[0] = off + SvCUR(rx->check_substr);
+ }
+ else { /* startp/endp are used by @- @+. */
+ rx->startp[0] = s - truebase;
+ rx->endp[0] = s - truebase + SvCUR(rx->check_substr);
}
LEAVE_SCOPE(oldsave);
RETPUSHYES;
if (!isALPHA(*tmps) && !isDIGIT(*tmps) &&
strchr("$&*(){}[]'\";\\|?<>~`", *tmps))
break;
- if (*tmps && PerlLIO_stat(SvPVX(sv), &PL_statbuf) < 0) {
+ if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) {
(void)POPs; /* Unmatched wildcard? Chuck it... */
continue;
}
}
else if (!(s = fbm_instr((unsigned char*)HOP((U8*)s, rx->check_offset_min),
(unsigned char*)strend,
- rx->check_substr, 0)))
+ rx->check_substr,
+ PL_multiline ? FBMrf_MULTILINE : 0)))
goto nope;
if (s && rx->check_offset_max < s - m) {
++BmUSEFUL(rx->check_substr);
SvSCREAM_off(TARG); /* disable possible screamer */
if (once) {
rxtainted |= RX_MATCH_TAINTED(rx);
- if (rx->subbase) {
- m = orig + (rx->startp[0] - rx->subbase);
- d = orig + (rx->endp[0] - rx->subbase);
- } else {
- m = rx->startp[0];
- d = rx->endp[0];
- }
+ m = orig + rx->startp[0];
+ d = orig + rx->endp[0];
s = orig;
if (m - s > strend - d) { /* faster to shorten from end */
if (clen) {
if (iters++ > maxiters)
DIE("Substitution loop");
rxtainted |= RX_MATCH_TAINTED(rx);
- m = rx->startp[0];
+ m = rx->startp[0] + orig;
/*SUPPRESS 560*/
if (i = m - s) {
if (s != d)
Copy(c, d, clen, char);
d += clen;
}
- s = rx->endp[0];
+ s = rx->endp[0] + orig;
} while (CALLREGEXEC(rx, s, strend, orig, s == m,
- Nullsv, NULL, 0)); /* don't match same null twice */
+ Nullsv, NULL, REXEC_NOT_FIRST)); /* don't match same null twice */
if (s != d) {
i = strend - s;
SvCUR_set(TARG, d - SvPVX(TARG) + i);
PUSHSUBST(cx);
RETURNOP(cPMOP->op_pmreplroot);
}
- r_flags |= REXEC_IGNOREPOS;
+ r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST;
do {
if (iters++ > maxiters)
DIE("Substitution loop");
rxtainted |= RX_MATCH_TAINTED(rx);
- if (rx->subbase && rx->subbase != orig) {
+ if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) {
m = s;
s = orig;
- orig = rx->subbase;
+ orig = rx->subbeg;
s = orig + (m - s);
strend = s + (strend - m);
}
- m = rx->startp[0];
+ m = rx->startp[0] + orig;
sv_catpvn(dstr, s, m-s);
- s = rx->endp[0];
+ s = rx->endp[0] + orig;
if (clen)
sv_catpvn(dstr, c, clen);
if (once)
projects / p5sagit/p5-mst-13.2.git / blobdiff