-/* $RCSfile: doarg.c,v $$Revision: 4.1 $$Date: 92/08/07 17:19:37 $
+/* doop.c
*
- * Copyright (c) 1991, Larry Wall
+ * 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.
*
- * $Log: doarg.c,v $
- * Revision 4.1 92/08/07 17:19:37 lwall
- * Stage 6 Snapshot
- *
- * Revision 4.0.1.7 92/06/11 21:07:11 lwall
- * patch34: join with null list attempted negative allocation
- * patch34: sprintf("%6.4s", "abcdefg") didn't print "abcd "
- *
- * Revision 4.0.1.6 92/06/08 12:34:30 lwall
- * patch20: removed implicit int declarations on funcions
- * patch20: pattern modifiers i and o didn't interact right
- * patch20: join() now pre-extends target string to avoid excessive copying
- * patch20: fixed confusion between a *var's real name and its effective name
- * patch20: subroutines didn't localize $`, $&, $', $1 et al correctly
- * patch20: usersub routines didn't reclaim temp values soon enough
- * patch20: ($<,$>) = ... didn't work on some architectures
- * patch20: added Atari ST portability
- *
- * Revision 4.0.1.5 91/11/11 16:31:58 lwall
- * patch19: added little-endian pack/unpack options
- *
- * Revision 4.0.1.4 91/11/05 16:35:06 lwall
- * patch11: /$foo/o optimizer could access deallocated data
- * patch11: minimum match length calculation in regexp is now cumulative
- * patch11: added some support for 64-bit integers
- * patch11: prepared for ctype implementations that don't define isascii()
- * patch11: sprintf() now supports any length of s field
- * patch11: indirect subroutine calls through magic vars (e.g. &$1) didn't work
- * patch11: defined(&$foo) and undef(&$foo) didn't work
- *
- * Revision 4.0.1.3 91/06/10 01:18:41 lwall
- * patch10: pack(hh,1) dumped core
- *
- * Revision 4.0.1.2 91/06/07 10:42:17 lwall
- * patch4: new copyright notice
- * patch4: // wouldn't use previous pattern if it started with a null character
- * patch4: //o and s///o now optimize themselves fully at runtime
- * patch4: added global modifier for pattern matches
- * patch4: undef @array disabled "@array" interpolation
- * patch4: chop("") was returning "\0" rather than ""
- * patch4: vector logical operations &, | and ^ sometimes returned null string
- * patch4: syscall couldn't pass numbers with most significant bit set on sparcs
- *
- * Revision 4.0.1.1 91/04/11 17:40:14 lwall
- * patch1: fixed undefined environ problem
- * patch1: fixed debugger coredump on subroutines
- *
- * Revision 4.0 91/03/20 01:06:42 lwall
- * 4.0 baseline.
- *
+ */
+
+/*
+ * "'So that was the job I felt I had to do when I started,' thought Sam."
*/
#include "EXTERN.h"
#include <signal.h>
#endif
-#ifdef BUGGY_MSC
- #pragma function(memcmp)
-#endif /* BUGGY_MSC */
-
-static void doencodes();
-
-#ifdef BUGGY_MSC
- #pragma intrinsic(memcmp)
-#endif /* BUGGY_MSC */
-
I32
do_trans(sv,arg)
SV *sv;
OP *arg;
{
register short *tbl;
- register char *s;
- register I32 matches = 0;
+ register U8 *s;
+ register U8 *send;
+ register U8 *d;
register I32 ch;
- register char *send;
- register char *d;
+ register I32 matches = 0;
register I32 squash = op->op_private & OPpTRANS_SQUASH;
+ STRLEN len;
- tbl = (short*) cPVOP->op_pv;
- s = SvPVn(sv);
- send = s + SvCUR(sv);
+ if (SvREADONLY(sv))
+ croak(no_modify);
+ tbl = (short*)cPVOP->op_pv;
+ s = (U8*)SvPV(sv, len);
+ if (!len)
+ return 0;
+ if (!SvPOKp(sv))
+ s = (U8*)SvPV_force(sv, len);
+ (void)SvPOK_only(sv);
+ send = s + len;
if (!tbl || !s)
- fatal("panic: do_trans");
+ croak("panic: do_trans");
DEBUG_t( deb("2.TBL\n"));
if (!op->op_private) {
while (s < send) {
- if ((ch = tbl[*s & 0377]) >= 0) {
+ if ((ch = tbl[*s]) >= 0) {
matches++;
*s = ch;
}
else {
d = s;
while (s < send) {
- if ((ch = tbl[*s & 0377]) >= 0) {
+ if ((ch = tbl[*s]) >= 0) {
*d = ch;
if (matches++ && squash) {
if (d[-1] == *d)
}
matches += send - d; /* account for disappeared chars */
*d = '\0';
- SvCUR_set(sv, d - SvPV(sv));
+ SvCUR_set(sv, d - (U8*)SvPVX(sv));
}
SvSETMAGIC(sv);
return matches;
{
SV **oldmark = mark;
register I32 items = sp - mark;
- register char *delim = SvPVn(del);
register STRLEN len;
- I32 delimlen = SvCUR(del);
+ STRLEN delimlen;
+ register char *delim = SvPV(del, delimlen);
+ STRLEN tmplen;
mark++;
len = (items > 0 ? (delimlen * (items - 1) ) : 0);
if (SvLEN(sv) < len + items) { /* current length is way too short */
while (items-- > 0) {
if (*mark) {
- if (!SvPOK(*mark)) {
- sv_2pv(*mark);
- if (!SvPOK(*mark))
- *mark = &sv_no;
- }
- len += SvCUR((*mark));
+ SvPV(*mark, tmplen);
+ len += tmplen;
}
mark++;
}
++mark;
}
- if (items-- > 0)
- sv_setsv(sv, *mark++);
+ if (items-- > 0) {
+ char *s;
+
+ if (*mark) {
+ s = SvPV(*mark, tmplen);
+ sv_setpvn(sv, s, tmplen);
+ }
+ else
+ sv_setpv(sv, "");
+ mark++;
+ }
else
sv_setpv(sv,"");
len = delimlen;
register char *s;
register char *t;
register char *f;
- bool dolong;
-#ifdef QUAD
- bool doquad;
-#endif /* QUAD */
+ char dotype;
char ch;
register char *send;
register SV *arg;
I32 pre;
I32 post;
double value;
+ STRLEN arglen;
sv_setpv(sv,"");
len--; /* don't count pattern string */
- t = s = SvPVn(*sarg);
- send = s + SvCUR(*sarg);
+ t = s = SvPV(*sarg, arglen); /* XXX Don't know t is writeable */
+ send = s + arglen;
sarg++;
for ( ; ; len--) {
f = t;
*buf = '\0';
xs = buf;
-#ifdef QUAD
- doquad =
-#endif /* QUAD */
- dolong = FALSE;
+ dotype = '\0';
pre = post = 0;
for (t++; t < send; t++) {
switch (*t) {
len++, sarg--;
xlen = strlen(xs);
break;
+ case 'n': case '*':
+ croak("Use of %c in printf format not supported", *t);
+
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
case '.': case '#': case '-': case '+': case ' ':
continue;
- case 'lXXX':
-#ifdef QUAD
- if (dolong) {
- dolong = FALSE;
- doquad = TRUE;
- } else
+ case 'l':
+#ifdef HAS_QUAD
+ if (dotype == 'l')
+ dotype = 'q';
+ else
#endif
- dolong = TRUE;
+ dotype = 'l';
+ continue;
+ case 'h':
+ dotype = 's';
continue;
case 'c':
ch = *(++t);
*t = '\0';
- xlen = SvIVn(arg);
+ xlen = SvIV(arg);
if (strEQ(f,"%c")) { /* some printfs fail on null chars */
*xs = xlen;
xs[1] = '\0';
}
break;
case 'D':
- dolong = TRUE;
+ dotype = 'l';
/* FALL THROUGH */
case 'd':
+ case 'i':
ch = *(++t);
*t = '\0';
-#ifdef QUAD
- if (doquad)
- (void)sprintf(buf,s,(quad)SvNVn(arg));
- else
+ switch (dotype) {
+#ifdef HAS_QUAD
+ case 'q':
+ /* perl.h says that if quad is available, IV is quad */
+ (void)sprintf(xs,f,(Quad_t)SvIV(arg));
+ break;
#endif
- if (dolong)
- (void)sprintf(xs,f,(long)SvNVn(arg));
- else
- (void)sprintf(xs,f,SvIVn(arg));
+ case 'l':
+ (void)sprintf(xs,f,(long)SvIV(arg));
+ break;
+ default:
+ (void)sprintf(xs,f,(int)SvIV(arg));
+ break;
+ case 's':
+ (void)sprintf(xs,f,(short)SvIV(arg));
+ break;
+ }
xlen = strlen(xs);
break;
case 'X': case 'O':
- dolong = TRUE;
+ dotype = 'l';
/* FALL THROUGH */
case 'x': case 'o': case 'u':
ch = *(++t);
*t = '\0';
- value = SvNVn(arg);
-#ifdef QUAD
- if (doquad)
- (void)sprintf(buf,s,(unsigned quad)value);
- else
+ switch (dotype) {
+#ifdef HAS_QUAD
+ case 'q':
+ /* perl.h says that if quad is available, UV is quad */
+ (void)sprintf(xs,f,(unsigned Quad_t)SvUV(arg));
+ break;
#endif
- if (dolong)
- (void)sprintf(xs,f,U_L(value));
- else
- (void)sprintf(xs,f,U_I(value));
+ case 'l':
+ (void)sprintf(xs,f,(unsigned long)SvUV(arg));
+ break;
+ default:
+ (void)sprintf(xs,f,(unsigned int)SvUV(arg));
+ break;
+ case 's':
+ (void)sprintf(xs,f,(unsigned short)SvUV(arg));
+ break;
+ }
xlen = strlen(xs);
break;
case 'E': case 'e': case 'f': case 'G': case 'g':
ch = *(++t);
*t = '\0';
- (void)sprintf(xs,f,SvNVn(arg));
+ (void)sprintf(xs,f,SvNV(arg));
xlen = strlen(xs);
+#ifdef LC_NUMERIC
+ /*
+ * User-defined locales may include arbitrary characters.
+ * And, unfortunately, some system may alloc the "C" locale
+ * to be overridden by a malicious user.
+ */
+ if (op->op_type == OP_SPRINTF)
+ SvTAINTED_on(sv);
+#endif /* LC_NUMERIC */
break;
case 's':
ch = *(++t);
*t = '\0';
- xs = SvPVn(arg);
- if (SvPOK(arg))
- xlen = SvCUR(arg);
- else
- xlen = strlen(xs);
+ xs = SvPV(arg, arglen);
+ xlen = (I32)arglen;
if (strEQ(f,"%s")) { /* some printfs fail on >128 chars */
break; /* so handle simple cases */
}
else if (f[1] == '-') {
- char *mp = index(f, '.');
+ char *mp = strchr(f, '.');
I32 min = atoi(f+2);
if (mp) {
break;
}
else if (isDIGIT(f[1])) {
- char *mp = index(f, '.');
+ char *mp = strchr(f, '.');
I32 min = atoi(f+1);
if (mp) {
}
/* end of switch, copy results */
*t = ch;
+ if (xs == buf && xlen >= sizeof(buf)) { /* Ooops! */
+ PerlIO_puts(PerlIO_stderr(),"panic: sprintf overflow - memory corrupted!\n");
+ my_exit(1);
+ }
SvGROW(sv, SvCUR(sv) + (f - s) + xlen + 1 + pre + post);
sv_catpvn(sv, s, f - s);
if (pre) {
- repeatcpy(SvPV(sv) + SvCUR(sv), " ", 1, pre);
+ repeatcpy(SvPVX(sv) + SvCUR(sv), " ", 1, pre);
SvCUR(sv) += pre;
}
sv_catpvn(sv, xs, xlen);
if (post) {
- repeatcpy(SvPV(sv) + SvCUR(sv), " ", 1, post);
+ repeatcpy(SvPVX(sv) + SvCUR(sv), " ", 1, post);
SvCUR(sv) += post;
}
s = t;
SV *targ = LvTARG(sv);
register I32 offset;
register I32 size;
- register unsigned char *s = (unsigned char*)SvPV(targ);
- register unsigned long lval = U_L(SvNVn(sv));
+ register unsigned char *s;
+ register unsigned long lval;
I32 mask;
+ STRLEN targlen;
+ STRLEN len;
+ if (!targ)
+ return;
+ s = (unsigned char*)SvPV_force(targ, targlen);
+ lval = U_L(SvNV(sv));
offset = LvTARGOFF(sv);
size = LvTARGLEN(sv);
+
+ len = (offset + size + 7) / 8;
+ 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;
s[offset] |= lval << size;
}
else {
+ offset >>= 3;
if (size == 8)
s[offset] = lval & 255;
else if (size == 16) {
register SV *astr;
register SV *sv;
{
- register char *tmps;
- register I32 i;
- AV *ary;
- HV *hash;
- HE *entry;
-
- if (!sv)
- return;
+ STRLEN len;
+ char *s;
+
if (SvTYPE(sv) == SVt_PVAV) {
- I32 max;
- SV **array = AvARRAY(sv);
- max = AvFILL(sv);
- for (i = 0; i <= max; i++)
- do_chop(astr,array[i]);
- return;
+ 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 != &sv_undef))
+ do_chop(astr, sv);
+ }
+ return;
}
if (SvTYPE(sv) == SVt_PVHV) {
- hash = (HV*)sv;
- (void)hv_iterinit(hash);
- /*SUPPRESS 560*/
- while (entry = hv_iternext(hash))
- do_chop(astr,hv_iterval(hash,entry));
- return;
+ 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;
}
- tmps = SvPVn(sv);
- if (tmps && SvCUR(sv)) {
- tmps += SvCUR(sv) - 1;
- sv_setpvn(astr,tmps,1); /* remember last char */
- *tmps = '\0'; /* wipe it out */
- SvCUR_set(sv, tmps - SvPV(sv));
- SvNOK_off(sv);
- SvSETMAGIC(sv);
+ s = SvPV(sv, len);
+ if (len && !SvPOK(sv))
+ s = SvPV_force(sv, len);
+ if (s && len) {
+ s += --len;
+ sv_setpvn(astr, s, 1);
+ *s = '\0';
+ SvCUR_set(sv, len);
+ SvNIOK_off(sv);
}
else
- sv_setpvn(astr,"",0);
-}
+ sv_setpvn(astr, "", 0);
+ SvSETMAGIC(sv);
+}
+
+I32
+do_chomp(sv)
+register SV *sv;
+{
+ register I32 count;
+ STRLEN len;
+ char *s;
+
+ if (RsSNARF(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 != &sv_undef))
+ count += do_chomp(sv);
+ }
+ return count;
+ }
+ 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;
+ }
+ s = SvPV(sv, len);
+ if (len && !SvPOKp(sv))
+ s = SvPV_force(sv, len);
+ if (s && len) {
+ s += --len;
+ if (RsPARA(rs)) {
+ if (*s != '\n')
+ goto nope;
+ ++count;
+ while (len && s[-1] == '\n') {
+ --len;
+ --s;
+ ++count;
+ }
+ }
+ else {
+ STRLEN rslen;
+ char *rsptr = SvPV(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
do_vop(optype,sv,left,right)
register long *rl;
#endif
register char *dc;
- register char *lc = SvPVn(left);
- register char *rc = SvPVn(right);
+ STRLEN leftlen;
+ STRLEN rightlen;
+ register char *lc;
+ register char *rc;
register I32 len;
+ I32 lensave;
+ char *lsave;
+ char *rsave;
- len = SvCUR(left);
- if (len > SvCUR(right))
- len = SvCUR(right);
- if (SvTYPE(sv) < SVt_PV)
- sv_upgrade(sv, SVt_PV);
- if (SvCUR(sv) > len)
- SvCUR_set(sv, len);
- else if (SvCUR(sv) < len) {
- SvGROW(sv,len);
- (void)memzero(SvPV(sv) + SvCUR(sv), len - SvCUR(sv));
- SvCUR_set(sv, len);
+ 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 (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
+ dc = SvPV_force(sv, na);
+ if (SvCUR(sv) < len) {
+ dc = SvGROW(sv, len + 1);
+ (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
+ }
}
- SvPOK_only(sv);
- dc = SvPV(sv);
- if (!dc) {
- sv_setpvn(sv,"",0);
- dc = SvPV(sv);
+ else {
+ I32 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);
#ifdef LIBERAL
if (len >= sizeof(long)*4 &&
!((long)dc % sizeof(long)) &&
*dl++ = *ll++ & *rl++;
}
break;
- case OP_XOR:
+ case OP_BIT_XOR:
while (len--) {
*dl++ = *ll++ ^ *rl++;
*dl++ = *ll++ ^ *rl++;
len = remainder;
}
#endif
- switch (optype) {
- case OP_BIT_AND:
- while (len--)
- *dc++ = *lc++ & *rc++;
- break;
- case OP_XOR:
- while (len--)
- *dc++ = *lc++ ^ *rc++;
- goto mop_up;
- case OP_BIT_OR:
- while (len--)
- *dc++ = *lc++ | *rc++;
- mop_up:
- len = SvCUR(sv);
- if (SvCUR(right) > len)
- sv_catpvn(sv,SvPV(right)+len,SvCUR(right) - len);
- else if (SvCUR(left) > len)
- sv_catpvn(sv,SvPV(left)+len,SvCUR(left) - len);
- break;
+ {
+ 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;
+ }
+ }
+}
+
+OP *
+do_kv(ARGS)
+dARGS
+{
+ dSP;
+ HV *hv = (HV*)POPs;
+ register HE *entry;
+ SV *tmpstr;
+ I32 dokeys = (op->op_type == OP_KEYS);
+ I32 dovalues = (op->op_type == OP_VALUES);
+
+ if (op->op_type == OP_RV2HV || op->op_type == OP_PADHV)
+ dokeys = dovalues = TRUE;
+
+ if (!hv) {
+ if (op->op_flags & OPf_MOD) { /* lvalue */
+ dTARGET; /* make sure to clear its target here */
+ if (SvTYPE(TARG) == SVt_PVLV)
+ LvTARG(TARG) = Nullsv;
+ PUSHs(TARG);
+ }
+ RETURN;
+ }
+
+ (void)hv_iterinit(hv); /* always reset iterator regardless */
+
+ if (op->op_private & OPpLEAVE_VOID)
+ RETURN;
+
+ if (GIMME != G_ARRAY) {
+ I32 i;
+ dTARGET;
+
+ if (op->op_flags & OPf_MOD) { /* lvalue */
+ if (SvTYPE(TARG) < SVt_PVLV) {
+ sv_upgrade(TARG, SVt_PVLV);
+ sv_magic(TARG, Nullsv, 'k', Nullch, 0);
+ }
+ LvTYPE(TARG) = 'k';
+ LvTARG(TARG) = (SV*)hv;
+ PUSHs(TARG);
+ RETURN;
+ }
+
+ if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P'))
+ i = HvKEYS(hv);
+ else {
+ i = 0;
+ /*SUPPRESS 560*/
+ while (entry = hv_iternext(hv)) {
+ i++;
+ }
+ }
+ PUSHi( i );
+ RETURN;
+ }
+
+ /* Guess how much room we need. hv_max may be a few too many. Oh well. */
+ EXTEND(sp, HvMAX(hv) * (dokeys + dovalues));
+
+ PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
+ while (entry = hv_iternext(hv)) {
+ SPAGAIN;
+ if (dokeys)
+ XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
+ if (dovalues) {
+ tmpstr = NEWSV(45,0);
+ PUTBACK;
+ sv_setsv(tmpstr,hv_iterval(hv,entry));
+ SPAGAIN;
+ DEBUG_H( {
+ sprintf(buf,"%d%%%d=%d\n", HeHASH(entry),
+ HvMAX(hv)+1, HeHASH(entry) & HvMAX(hv));
+ sv_setpv(tmpstr,buf);
+ } )
+ XPUSHs(sv_2mortal(tmpstr));
+ }
+ PUTBACK;
}
+ return NORMAL;
}
+