/* doop.c
*
- * Copyright (c) 1991-1999, Larry Wall
+ * Copyright (c) 1991-2000, 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.
UV extra = none + 1;
UV final;
UV uv;
- U8 tmpbuf[10];
+ U8 tmpbuf[UTF8_MAXLEN];
I32 bits = 16;
s = (U8*)SvPV(sv, len);
SvTAINTED_on(sv);
}
+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");
+ 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) {
+ dTHR;
+ 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) {
+ dTHR;
+ 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;
+}
+
void
Perl_do_vecset(pTHX_ SV *sv)
{
register I32 offset;
register I32 size;
register unsigned char *s;
- register unsigned long lval;
+ register UV lval;
I32 mask;
STRLEN targlen;
STRLEN len;
if (!targ)
return;
s = (unsigned char*)SvPV_force(targ, targlen);
- lval = U_L(SvNV(sv));
+ lval = SvUV(sv);
offset = LvTARGOFF(sv);
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");
- len = (offset + size + 7) / 8;
+ 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);
mask = (1 << size) - 1;
size = offset & 7;
lval &= mask;
- offset >>= 3;
+ offset >>= 3; /* turn into byte offset */
s[offset] &= ~(mask << size);
s[offset] |= lval << size;
}
else {
- offset >>= 3;
+ offset >>= 3; /* turn into byte offset */
if (size == 8)
- s[offset] = lval & 255;
+ s[offset ] = lval & 0xff;
else if (size == 16) {
- s[offset] = (lval >> 8) & 255;
- s[offset+1] = lval & 255;
+ s[offset ] = (lval >> 8) & 0xff;
+ s[offset+1] = lval & 0xff;
}
else if (size == 32) {
- s[offset] = (lval >> 24) & 255;
- s[offset+1] = (lval >> 16) & 255;
- s[offset+2] = (lval >> 8) & 255;
- s[offset+3] = lval & 255;
+ 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) {
+ dTHR;
+ 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);
}
s = SvPV(sv, len);
if (len && !SvPOK(sv))
s = SvPV_force(sv, len);
- if (IN_UTF8) {
+ if (DO_UTF8(sv)) {
if (s && len) {
char *send = s + len;
char *start = s;
*s = '\0';
SvCUR_set(sv, s - start);
SvNIOK_off(sv);
+ SvUTF8_on(astr);
}
else
sv_setpvn(astr, "", 0);
}
- else
- if (s && len) {
+ 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)
projects / p5sagit/p5-mst-13.2.git / blobdiff