/* utf8.c
*
- * Copyright (c) 1998-2001, Larry Wall
+ * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+ * by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
#define PERL_IN_UTF8_C
#include "perl.h"
-/* Unicode support */
+static const char unees[] =
+ "Malformed UTF-8 character (unexpected end of string)";
-/*
-=for apidoc A|U8*|uv_to_utf8|U8 *d|UV uv
+/*
+=head1 Unicode Support
+
+This file contains various utility functions for manipulating UTF8-encoded
+strings. For the uninitiated, this is a method of representing arbitrary
+Unicode characters as a variable number of bytes, in such a way that
+characters in the ASCII range are unmodified, and a zero byte never appears
+within non-zero characters.
-Adds the UTF8 representation of the Unicode codepoint C<uv> to the end
-of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free
+=for apidoc A|U8 *|uvuni_to_utf8_flags|U8 *d|UV uv|UV flags
+
+Adds the UTF-8 representation of the Unicode codepoint C<uv> to the end
+of the string C<d>; C<d> should be have at least C<UTF8_MAXBYTES+1> free
bytes available. The return value is the pointer to the byte after the
-end of the new character. In other words,
+end of the new character. In other words,
+
+ d = uvuni_to_utf8_flags(d, uv, flags);
+
+or, in most cases,
+
+ d = uvuni_to_utf8(d, uv);
+
+(which is equivalent to)
- d = uv_to_utf8(d, uv);
+ d = uvuni_to_utf8_flags(d, uv, 0);
is the recommended Unicode-aware way of saying
*/
U8 *
-Perl_uv_to_utf8(pTHX_ U8 *d, UV uv)
-{
- if (uv < 0x80) {
- *d++ = uv;
+Perl_uvuni_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags)
+{
+ if (ckWARN(WARN_UTF8)) {
+ if (UNICODE_IS_SURROGATE(uv) &&
+ !(flags & UNICODE_ALLOW_SURROGATE))
+ Perl_warner(aTHX_ packWARN(WARN_UTF8), "UTF-16 surrogate 0x%04"UVxf, uv);
+ else if (
+ ((uv >= 0xFDD0 && uv <= 0xFDEF &&
+ !(flags & UNICODE_ALLOW_FDD0))
+ ||
+ ((uv & 0xFFFE) == 0xFFFE && /* Either FFFE or FFFF. */
+ !(flags & UNICODE_ALLOW_FFFF))) &&
+ /* UNICODE_ALLOW_SUPER includes
+ * FFFEs and FFFFs beyond 0x10FFFF. */
+ ((uv <= PERL_UNICODE_MAX) ||
+ !(flags & UNICODE_ALLOW_SUPER))
+ )
+ Perl_warner(aTHX_ packWARN(WARN_UTF8),
+ "Unicode character 0x%04"UVxf" is illegal", uv);
+ }
+ if (UNI_IS_INVARIANT(uv)) {
+ *d++ = (U8)UTF_TO_NATIVE(uv);
return d;
}
+#if defined(EBCDIC)
+ else {
+ STRLEN len = UNISKIP(uv);
+ U8 *p = d+len-1;
+ while (p > d) {
+ *p-- = (U8)UTF_TO_NATIVE((uv & UTF_CONTINUATION_MASK) | UTF_CONTINUATION_MARK);
+ uv >>= UTF_ACCUMULATION_SHIFT;
+ }
+ *p = (U8)UTF_TO_NATIVE((uv & UTF_START_MASK(len)) | UTF_START_MARK(len));
+ return d+len;
+ }
+#else /* Non loop style */
if (uv < 0x800) {
- *d++ = (( uv >> 6) | 0xc0);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = (U8)(( uv >> 6) | 0xc0);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
return d;
}
if (uv < 0x10000) {
- *d++ = (( uv >> 12) | 0xe0);
- *d++ = (((uv >> 6) & 0x3f) | 0x80);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = (U8)(( uv >> 12) | 0xe0);
+ *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
return d;
}
if (uv < 0x200000) {
- *d++ = (( uv >> 18) | 0xf0);
- *d++ = (((uv >> 12) & 0x3f) | 0x80);
- *d++ = (((uv >> 6) & 0x3f) | 0x80);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = (U8)(( uv >> 18) | 0xf0);
+ *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
return d;
}
if (uv < 0x4000000) {
- *d++ = (( uv >> 24) | 0xf8);
- *d++ = (((uv >> 18) & 0x3f) | 0x80);
- *d++ = (((uv >> 12) & 0x3f) | 0x80);
- *d++ = (((uv >> 6) & 0x3f) | 0x80);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = (U8)(( uv >> 24) | 0xf8);
+ *d++ = (U8)(((uv >> 18) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
return d;
}
if (uv < 0x80000000) {
- *d++ = (( uv >> 30) | 0xfc);
- *d++ = (((uv >> 24) & 0x3f) | 0x80);
- *d++ = (((uv >> 18) & 0x3f) | 0x80);
- *d++ = (((uv >> 12) & 0x3f) | 0x80);
- *d++ = (((uv >> 6) & 0x3f) | 0x80);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = (U8)(( uv >> 30) | 0xfc);
+ *d++ = (U8)(((uv >> 24) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 18) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
return d;
}
#ifdef HAS_QUAD
if (uv < UTF8_QUAD_MAX)
#endif
{
- *d++ = 0xfe; /* Can't match U+FEFF! */
- *d++ = (((uv >> 30) & 0x3f) | 0x80);
- *d++ = (((uv >> 24) & 0x3f) | 0x80);
- *d++ = (((uv >> 18) & 0x3f) | 0x80);
- *d++ = (((uv >> 12) & 0x3f) | 0x80);
- *d++ = (((uv >> 6) & 0x3f) | 0x80);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = 0xfe; /* Can't match U+FEFF! */
+ *d++ = (U8)(((uv >> 30) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 24) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 18) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
return d;
}
#ifdef HAS_QUAD
{
- *d++ = 0xff; /* Can't match U+FFFE! */
- *d++ = 0x80; /* 6 Reserved bits */
- *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */
- *d++ = (((uv >> 54) & 0x3f) | 0x80);
- *d++ = (((uv >> 48) & 0x3f) | 0x80);
- *d++ = (((uv >> 42) & 0x3f) | 0x80);
- *d++ = (((uv >> 36) & 0x3f) | 0x80);
- *d++ = (((uv >> 30) & 0x3f) | 0x80);
- *d++ = (((uv >> 24) & 0x3f) | 0x80);
- *d++ = (((uv >> 18) & 0x3f) | 0x80);
- *d++ = (((uv >> 12) & 0x3f) | 0x80);
- *d++ = (((uv >> 6) & 0x3f) | 0x80);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = 0xff; /* Can't match U+FFFE! */
+ *d++ = 0x80; /* 6 Reserved bits */
+ *d++ = (U8)(((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */
+ *d++ = (U8)(((uv >> 54) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 48) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 42) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 36) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 30) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 24) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 18) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
return d;
}
#endif
+#endif /* Loop style */
}
/*
-=for apidoc A|STRLEN|is_utf8_char|U8 *s
Tests if some arbitrary number of bytes begins in a valid UTF-8
-character. Note that an ASCII character is a valid UTF-8 character.
-The actual number of bytes in the UTF-8 character will be returned if
-it is valid, otherwise 0.
-
+character. Note that an INVARIANT (i.e. ASCII) character is a valid
+UTF-8 character. The actual number of bytes in the UTF-8 character
+will be returned if it is valid, otherwise 0.
+
+This is the "slow" version as opposed to the "fast" version which is
+the "unrolled" IS_UTF8_CHAR(). E.g. for t/uni/class.t the speed
+difference is a factor of 2 to 3. For lengths (UTF8SKIP(s)) of four
+or less you should use the IS_UTF8_CHAR(), for lengths of five or more
+you should use the _slow(). In practice this means that the _slow()
+will be used very rarely, since the maximum Unicode code point (as of
+Unicode 4.1) is U+10FFFF, which encodes in UTF-8 to four bytes. Only
+the "Perl extended UTF-8" (the infamous 'v-strings') will encode into
+five bytes or more.
+
=cut */
-STRLEN
-Perl_is_utf8_char(pTHX_ U8 *s)
+STATIC STRLEN
+S_is_utf8_char_slow(const U8 *s, const STRLEN len)
{
U8 u = *s;
- STRLEN slen, len;
+ STRLEN slen;
UV uv, ouv;
- if (UTF8_IS_ASCII(u))
+ if (UTF8_IS_INVARIANT(u))
return 1;
if (!UTF8_IS_START(u))
return 0;
- len = UTF8SKIP(s);
-
if (len < 2 || !UTF8_IS_CONTINUATION(s[1]))
return 0;
slen = len - 1;
s++;
- uv = u;
+#ifdef EBCDIC
+ u = NATIVE_TO_UTF(u);
+#endif
+ u &= UTF_START_MASK(len);
+ uv = u;
ouv = uv;
while (slen--) {
if (!UTF8_IS_CONTINUATION(*s))
return 0;
uv = UTF8_ACCUMULATE(uv, *s);
- if (uv < ouv)
+ if (uv < ouv)
return 0;
ouv = uv;
s++;
}
- if (UNISKIP(uv) < len)
+ if ((STRLEN)UNISKIP(uv) < len)
return 0;
return len;
}
/*
-=for apidoc A|bool|is_utf8_string|U8 *s|STRLEN len
+=for apidoc A|STRLEN|is_utf8_char|const U8 *s
+
+Tests if some arbitrary number of bytes begins in a valid UTF-8
+character. Note that an INVARIANT (i.e. ASCII) character is a valid
+UTF-8 character. The actual number of bytes in the UTF-8 character
+will be returned if it is valid, otherwise 0.
-Returns true if first C<len> bytes of the given string form a valid UTF8
-string, false otherwise. Note that 'a valid UTF8 string' does not mean
-'a string that contains UTF8' because a valid ASCII string is a valid
-UTF8 string.
+=cut */
+STRLEN
+Perl_is_utf8_char(pTHX_ const U8 *s)
+{
+ const STRLEN len = UTF8SKIP(s);
+ PERL_UNUSED_CONTEXT;
+#ifdef IS_UTF8_CHAR
+ if (IS_UTF8_CHAR_FAST(len))
+ return IS_UTF8_CHAR(s, len) ? len : 0;
+#endif /* #ifdef IS_UTF8_CHAR */
+ return is_utf8_char_slow(s, len);
+}
+
+/*
+=for apidoc A|bool|is_utf8_string|const U8 *s|STRLEN len
+
+Returns true if first C<len> bytes of the given string form a valid
+UTF-8 string, false otherwise. Note that 'a valid UTF-8 string' does
+not mean 'a string that contains code points above 0x7F encoded in UTF-8'
+because a valid ASCII string is a valid UTF-8 string.
+
+See also is_utf8_string_loclen() and is_utf8_string_loc().
=cut
*/
bool
-Perl_is_utf8_string(pTHX_ U8 *s, STRLEN len)
+Perl_is_utf8_string(pTHX_ const U8 *s, STRLEN len)
{
- U8* x = s;
- U8* send;
- STRLEN c;
+ const U8* x = s;
+ const U8* send;
+ PERL_UNUSED_CONTEXT;
if (!len)
- len = strlen((char *)s);
+ len = strlen((const char *)s);
send = s + len;
while (x < send) {
- c = is_utf8_char(x);
- if (!c)
- return FALSE;
+ STRLEN c;
+ /* Inline the easy bits of is_utf8_char() here for speed... */
+ if (UTF8_IS_INVARIANT(*x))
+ c = 1;
+ else if (!UTF8_IS_START(*x))
+ goto out;
+ else {
+ /* ... and call is_utf8_char() only if really needed. */
+#ifdef IS_UTF8_CHAR
+ c = UTF8SKIP(x);
+ if (IS_UTF8_CHAR_FAST(c)) {
+ if (!IS_UTF8_CHAR(x, c))
+ goto out;
+ } else if (!is_utf8_char_slow(x, c))
+ goto out;
+#else
+ c = is_utf8_char(x);
+#endif /* #ifdef IS_UTF8_CHAR */
+ if (!c)
+ goto out;
+ }
x += c;
}
+
+ out:
if (x != send)
return FALSE;
}
/*
-=for apidoc A|UV|utf8_to_uv|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags
+Implemented as a macro in utf8.h
+
+=for apidoc A|bool|is_utf8_string_loc|const U8 *s|STRLEN len|const U8 **ep
+
+Like is_utf8_string() but stores the location of the failure (in the
+case of "utf8ness failure") or the location s+len (in the case of
+"utf8ness success") in the C<ep>.
+
+See also is_utf8_string_loclen() and is_utf8_string().
+
+=for apidoc A|bool|is_utf8_string_loclen|const U8 *s|STRLEN len|const U8 **ep|const STRLEN *el
+
+Like is_utf8_string() but stores the location of the failure (in the
+case of "utf8ness failure") or the location s+len (in the case of
+"utf8ness success") in the C<ep>, and the number of UTF-8
+encoded characters in the C<el>.
+
+See also is_utf8_string_loc() and is_utf8_string().
-Returns the character value of the first character in the string C<s>
-which is assumed to be in UTF8 encoding and no longer than C<curlen>;
+=cut
+*/
+
+bool
+Perl_is_utf8_string_loclen(pTHX_ const U8 *s, STRLEN len, const U8 **ep, STRLEN *el)
+{
+ const U8* x = s;
+ const U8* send;
+ STRLEN c;
+ PERL_UNUSED_CONTEXT;
+
+ if (!len)
+ len = strlen((const char *)s);
+ send = s + len;
+ if (el)
+ *el = 0;
+
+ while (x < send) {
+ /* Inline the easy bits of is_utf8_char() here for speed... */
+ if (UTF8_IS_INVARIANT(*x))
+ c = 1;
+ else if (!UTF8_IS_START(*x))
+ goto out;
+ else {
+ /* ... and call is_utf8_char() only if really needed. */
+#ifdef IS_UTF8_CHAR
+ c = UTF8SKIP(x);
+ if (IS_UTF8_CHAR_FAST(c)) {
+ if (!IS_UTF8_CHAR(x, c))
+ c = 0;
+ } else
+ c = is_utf8_char_slow(x, c);
+#else
+ c = is_utf8_char(x);
+#endif /* #ifdef IS_UTF8_CHAR */
+ if (!c)
+ goto out;
+ }
+ x += c;
+ if (el)
+ (*el)++;
+ }
+
+ out:
+ if (ep)
+ *ep = x;
+ if (x != send)
+ return FALSE;
+
+ return TRUE;
+}
+
+/*
+
+=for apidoc A|UV|utf8n_to_uvuni|const U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags
+
+Bottom level UTF-8 decode routine.
+Returns the unicode code point value of the first character in the string C<s>
+which is assumed to be in UTF-8 encoding and no longer than C<curlen>;
C<retlen> will be set to the length, in bytes, of that character.
-If C<s> does not point to a well-formed UTF8 character, the behaviour
+If C<s> does not point to a well-formed UTF-8 character, the behaviour
is dependent on the value of C<flags>: if it contains UTF8_CHECK_ONLY,
it is assumed that the caller will raise a warning, and this function
will silently just set C<retlen> to C<-1> and return zero. If the
The C<flags> can also contain various flags to allow deviations from
the strict UTF-8 encoding (see F<utf8.h>).
-=cut */
+Most code should use utf8_to_uvchr() rather than call this directly.
+
+=cut
+*/
UV
-Perl_utf8_to_uv(pTHX_ U8* s, STRLEN curlen, STRLEN* retlen, U32 flags)
+Perl_utf8n_to_uvuni(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags)
{
- UV uv = *s, ouv;
+ dVAR;
+ const U8 *s0 = s;
+ UV uv = *s, ouv = 0;
STRLEN len = 1;
-#ifdef EBCDIC
- bool dowarn = 0;
-#else
- bool dowarn = ckWARN_d(WARN_UTF8);
-#endif
+ const bool dowarn = ckWARN_d(WARN_UTF8);
+ const UV startbyte = *s;
STRLEN expectlen = 0;
U32 warning = 0;
#define UTF8_WARN_SHORT 5
#define UTF8_WARN_OVERFLOW 6
#define UTF8_WARN_SURROGATE 7
-#define UTF8_WARN_BOM 8
-#define UTF8_WARN_LONG 9
-#define UTF8_WARN_FFFF 10
+#define UTF8_WARN_LONG 8
+#define UTF8_WARN_FFFF 9 /* Also FFFE. */
if (curlen == 0 &&
!(flags & UTF8_ALLOW_EMPTY)) {
goto malformed;
}
- if (UTF8_IS_ASCII(uv)) {
+ if (UTF8_IS_INVARIANT(uv)) {
if (retlen)
*retlen = 1;
- return *s;
+ return (UV) (NATIVE_TO_UTF(*s));
}
if (UTF8_IS_CONTINUATION(uv) &&
warning = UTF8_WARN_NON_CONTINUATION;
goto malformed;
}
-
+
+#ifdef EBCDIC
+ uv = NATIVE_TO_UTF(uv);
+#else
if ((uv == 0xfe || uv == 0xff) &&
!(flags & UTF8_ALLOW_FE_FF)) {
warning = UTF8_WARN_FE_FF;
goto malformed;
}
-
+#endif
+
if (!(uv & 0x20)) { len = 2; uv &= 0x1f; }
else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; }
else if (!(uv & 0x08)) { len = 4; uv &= 0x07; }
else if (!(uv & 0x04)) { len = 5; uv &= 0x03; }
+#ifdef EBCDIC
+ else if (!(uv & 0x02)) { len = 6; uv &= 0x01; }
+ else { len = 7; uv &= 0x01; }
+#else
else if (!(uv & 0x02)) { len = 6; uv &= 0x01; }
else if (!(uv & 0x01)) { len = 7; uv = 0; }
- else { len = 13; uv = 0; } /* whoa! */
-
+ else { len = 13; uv = 0; } /* whoa! */
+#endif
+
if (retlen)
*retlen = len;
-
+
expectlen = len;
if ((curlen < expectlen) &&
if (!(uv > ouv)) {
/* These cannot be allowed. */
if (uv == ouv) {
- if (!(flags & UTF8_ALLOW_LONG)) {
+ if (expectlen != 13 && !(flags & UTF8_ALLOW_LONG)) {
warning = UTF8_WARN_LONG;
goto malformed;
}
!(flags & UTF8_ALLOW_SURROGATE)) {
warning = UTF8_WARN_SURROGATE;
goto malformed;
- } else if (UNICODE_IS_BYTE_ORDER_MARK(uv) &&
- !(flags & UTF8_ALLOW_BOM)) {
- warning = UTF8_WARN_BOM;
- goto malformed;
- } else if ((expectlen > UNISKIP(uv)) &&
+ } else if ((expectlen > (STRLEN)UNISKIP(uv)) &&
!(flags & UTF8_ALLOW_LONG)) {
warning = UTF8_WARN_LONG;
goto malformed;
}
if (dowarn) {
- SV* sv = sv_2mortal(newSVpv("Malformed UTF-8 character ", 0));
+ SV* const sv = sv_2mortal(newSVpvs("Malformed UTF-8 character "));
switch (warning) {
case 0: /* Intentionally empty. */ break;
case UTF8_WARN_EMPTY:
- Perl_sv_catpvf(aTHX_ sv, "(empty string)");
+ sv_catpvs(sv, "(empty string)");
break;
case UTF8_WARN_CONTINUATION:
- Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf")", uv);
+ Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf", with no preceding start byte)", uv);
break;
case UTF8_WARN_NON_CONTINUATION:
- Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf" after start byte 0x%02"UVxf")",
- (UV)s[1], uv);
+ if (s == s0)
+ Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", immediately after start byte 0x%02"UVxf")",
+ (UV)s[1], startbyte);
+ else {
+ const int len = (int)(s-s0);
+ Perl_sv_catpvf(aTHX_ sv, "(unexpected non-continuation byte 0x%02"UVxf", %d byte%s after start byte 0x%02"UVxf", expected %d bytes)",
+ (UV)s[1], len, len > 1 ? "s" : "", startbyte, (int)expectlen);
+ }
+
break;
case UTF8_WARN_FE_FF:
Perl_sv_catpvf(aTHX_ sv, "(byte 0x%02"UVxf")", uv);
break;
case UTF8_WARN_SHORT:
- Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d)",
- curlen, curlen == 1 ? "" : "s", expectlen);
+ Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")",
+ (int)curlen, curlen == 1 ? "" : "s", (int)expectlen, startbyte);
+ expectlen = curlen; /* distance for caller to skip */
break;
case UTF8_WARN_OVERFLOW:
- Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x)",
- ouv, *s);
+ Perl_sv_catpvf(aTHX_ sv, "(overflow at 0x%"UVxf", byte 0x%02x, after start byte 0x%02"UVxf")",
+ ouv, *s, startbyte);
break;
case UTF8_WARN_SURROGATE:
Perl_sv_catpvf(aTHX_ sv, "(UTF-16 surrogate 0x%04"UVxf")", uv);
break;
- case UTF8_WARN_BOM:
- Perl_sv_catpvf(aTHX_ sv, "(byte order mark 0x%04"UVxf")", uv);
- break;
case UTF8_WARN_LONG:
- Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d)",
- expectlen, expectlen == 1 ? "": "s", UNISKIP(uv));
+ Perl_sv_catpvf(aTHX_ sv, "(%d byte%s, need %d, after start byte 0x%02"UVxf")",
+ (int)expectlen, expectlen == 1 ? "": "s", UNISKIP(uv), startbyte);
break;
case UTF8_WARN_FFFF:
Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv);
break;
default:
- Perl_sv_catpvf(aTHX_ sv, "(unknown reason)");
+ sv_catpvs(sv, "(unknown reason)");
break;
}
if (warning) {
- char *s = SvPVX(sv);
+ const char * const s = SvPVX_const(sv);
if (PL_op)
- Perl_warner(aTHX_ WARN_UTF8,
- "%s in %s", s, PL_op_desc[PL_op->op_type]);
+ Perl_warner(aTHX_ packWARN(WARN_UTF8),
+ "%s in %s", s, OP_DESC(PL_op));
else
- Perl_warner(aTHX_ WARN_UTF8, "%s", s);
+ Perl_warner(aTHX_ packWARN(WARN_UTF8), "%s", s);
}
}
}
/*
-=for apidoc A|U8* s|utf8_to_uv_simple|STRLEN *retlen
+=for apidoc A|UV|utf8_to_uvchr|const U8 *s|STRLEN *retlen
+
+Returns the native character value of the first character in the string C<s>
+which is assumed to be in UTF-8 encoding; C<retlen> will be set to the
+length, in bytes, of that character.
+
+If C<s> does not point to a well-formed UTF-8 character, zero is
+returned and retlen is set, if possible, to -1.
+
+=cut
+*/
+
+UV
+Perl_utf8_to_uvchr(pTHX_ const U8 *s, STRLEN *retlen)
+{
+ return utf8n_to_uvchr(s, UTF8_MAXBYTES, retlen,
+ ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
+}
+
+/*
+=for apidoc A|UV|utf8_to_uvuni|const U8 *s|STRLEN *retlen
-Returns the character value of the first character in the string C<s>
-which is assumed to be in UTF8 encoding; C<retlen> will be set to the
+Returns the Unicode code point of the first character in the string C<s>
+which is assumed to be in UTF-8 encoding; C<retlen> will be set to the
length, in bytes, of that character.
-If C<s> does not point to a well-formed UTF8 character, zero is
+This function should only be used when returned UV is considered
+an index into the Unicode semantic tables (e.g. swashes).
+
+If C<s> does not point to a well-formed UTF-8 character, zero is
returned and retlen is set, if possible, to -1.
=cut
*/
UV
-Perl_utf8_to_uv_simple(pTHX_ U8* s, STRLEN* retlen)
+Perl_utf8_to_uvuni(pTHX_ const U8 *s, STRLEN *retlen)
{
- return Perl_utf8_to_uv(aTHX_ s, UTF8_MAXLEN, retlen, 0);
+ /* Call the low level routine asking for checks */
+ return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXBYTES, retlen,
+ ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
}
/*
-=for apidoc A|STRLEN|utf8_length|U8* s|U8 *e
+=for apidoc A|STRLEN|utf8_length|const U8 *s|const U8 *e
Return the length of the UTF-8 char encoded string C<s> in characters.
Stops at C<e> (inclusive). If C<e E<lt> s> or if the scan would end
*/
STRLEN
-Perl_utf8_length(pTHX_ U8* s, U8* e)
+Perl_utf8_length(pTHX_ const U8 *s, const U8 *e)
{
+ dVAR;
STRLEN len = 0;
/* Note: cannot use UTF8_IS_...() too eagerly here since e.g.
* In other words: in Perl UTF-8 is not just for Unicode. */
if (e < s)
- Perl_croak(aTHX_ "panic: utf8_length: unexpected end");
+ goto warn_and_return;
while (s < e) {
- U8 t = UTF8SKIP(s);
-
- if (e - s < t)
- Perl_croak(aTHX_ "panic: utf8_length: unaligned end");
+ const U8 t = UTF8SKIP(s);
+ if (e - s < t) {
+ warn_and_return:
+ if (ckWARN_d(WARN_UTF8)) {
+ if (PL_op)
+ Perl_warner(aTHX_ packWARN(WARN_UTF8),
+ "%s in %s", unees, OP_DESC(PL_op));
+ else
+ Perl_warner(aTHX_ packWARN(WARN_UTF8), unees);
+ }
+ return len;
+ }
s += t;
len++;
}
}
/*
-=for apidoc A|IV|utf8_distance|U8 *a|U8 *b
+=for apidoc A|IV|utf8_distance|const U8 *a|const U8 *b
-Returns the number of UTF8 characters between the UTF-8 pointers C<a>
+Returns the number of UTF
-8 characters between the UTF-8 pointers C<a>
and C<b>.
WARNING: use only if you *know* that the pointers point inside the
same UTF-8 buffer.
-=cut */
+=cut
+*/
IV
-Perl_utf8_distance(pTHX_ U8 *a, U8 *b)
+Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b)
{
- IV off = 0;
-
- /* Note: cannot use UTF8_IS_...() too eagerly here since e.g.
- * the bitops (especially ~) can create illegal UTF-8.
- * In other words: in Perl UTF-8 is not just for Unicode. */
-
- if (a < b) {
- while (a < b) {
- U8 c = UTF8SKIP(a);
-
- if (b - a < c)
- Perl_croak(aTHX_ "panic: utf8_distance: unaligned end");
- a += c;
- off--;
- }
- }
- else {
- while (b < a) {
- U8 c = UTF8SKIP(b);
-
- if (a - b < c)
- Perl_croak(aTHX_ "panic: utf8_distance: unaligned end");
- b += c;
- off++;
- }
- }
-
- return off;
+ return (a < b) ? -1 * (IV) utf8_length(a, b) : (IV) utf8_length(b, a);
}
/*
-=for apidoc A|U8*|utf8_hop|U8 *s|I32 off
+=for apidoc A|U8 *|utf8_hop|U8 *s|I32 off
Return the UTF-8 pointer C<s> displaced by C<off> characters, either
forward or backward.
the UTF-8 data pointed to by C<s> *and* that on entry C<s> is aligned
on the first byte of character or just after the last byte of a character.
-=cut */
+=cut
+*/
U8 *
-Perl_utf8_hop(pTHX_ U8 *s, I32 off)
+Perl_utf8_hop(pTHX_ const U8 *s, I32 off)
{
+ PERL_UNUSED_CONTEXT;
/* Note: cannot use UTF8_IS_...() too eagerly here since e.g
* the bitops (especially ~) can create illegal UTF-8.
* In other words: in Perl UTF-8 is not just for Unicode. */
s--;
}
}
- return s;
+ return (U8 *)s;
}
/*
=for apidoc A|U8 *|utf8_to_bytes|U8 *s|STRLEN *len
-Converts a string C<s> of length C<len> from UTF8 into byte encoding.
+Converts a string C<s> of length C<len> from UTF-8 into byte encoding.
Unlike C<bytes_to_utf8>, this over-writes the original string, and
updates len to contain the new length.
Returns zero on failure, setting C<len> to -1.
*/
U8 *
-Perl_utf8_to_bytes(pTHX_ U8* s, STRLEN *len)
+Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len)
{
U8 *send;
U8 *d;
U8 *save = s;
- /* ensure valid UTF8 and chars < 256 before updating string */
+ /* ensure valid UTF-8 and chars < 256 before updating string */
for (send = s + *len; s < send; ) {
U8 c = *s++;
- if (c >= 0x80 &&
- ((s >= send) ||
- ((*s++ & 0xc0) != 0x80) || ((c & 0xfe) != 0xc2))) {
+ if (!UTF8_IS_INVARIANT(c) &&
+ (!UTF8_IS_DOWNGRADEABLE_START(c) || (s >= send)
+ || !(c = *s++) || !UTF8_IS_CONTINUATION(c))) {
*len = -1;
return 0;
}
d = s = save;
while (s < send) {
STRLEN ulen;
- *d++ = (U8)utf8_to_uv_simple(s, &ulen);
+ *d++ = (U8)utf8_to_uvchr(s, &ulen);
s += ulen;
}
*d = '\0';
}
/*
-=for apidoc A|U8 *|bytes_from_utf8|U8 *s|STRLEN *len|bool *is_utf8
+=for apidoc A|U8 *|bytes_from_utf8|const U8 *s|STRLEN *len|bool *is_utf8
-Converts a string C<s> of length C<len> from UTF8 into byte encoding.
-Unlike <utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to
+Converts a string C<s> of length C<len> from UTF-8 into byte encoding.
+Unlike C<utf8_to_bytes> but like C<bytes_to_utf8>, returns a pointer to
the newly-created string, and updates C<len> to contain the new
length. Returns the original string if no conversion occurs, C<len>
is unchanged. Do nothing if C<is_utf8> points to 0. Sets C<is_utf8> to
0 if C<s> is converted or contains all 7bit characters.
-=cut */
+=cut
+*/
U8 *
-Perl_bytes_from_utf8(pTHX_ U8* s, STRLEN *len, bool *is_utf8)
+Perl_bytes_from_utf8(pTHX_ const U8 *s, STRLEN *len, bool *is_utf8)
{
- U8 *send;
U8 *d;
- U8 *start = s;
+ const U8 *start = s;
+ const U8 *send;
I32 count = 0;
+ PERL_UNUSED_CONTEXT;
if (!*is_utf8)
- return start;
+ return (U8 *)start;
- /* ensure valid UTF8 and chars < 256 before converting string */
+ /* ensure valid UTF-8 and chars < 256 before converting string */
for (send = s + *len; s < send;) {
- U8 c = *s++;
- if (!UTF8_IS_ASCII(c)) {
- if (UTF8_IS_CONTINUATION(c) || s >= send ||
- !UTF8_IS_CONTINUATION(*s) || UTF8_IS_DOWNGRADEABLE_START(c))
- return start;
- s++, count++;
- }
+ U8 c = *s++;
+ if (!UTF8_IS_INVARIANT(c)) {
+ if (UTF8_IS_DOWNGRADEABLE_START(c) && s < send &&
+ (c = *s++) && UTF8_IS_CONTINUATION(c))
+ count++;
+ else
+ return (U8 *)start;
+ }
}
*is_utf8 = 0;
- if (!count)
- return start;
-
- Newz(801, d, (*len) - count + 1, U8);
+ Newx(d, (*len) - count + 1, U8);
s = start; start = d;
while (s < send) {
U8 c = *s++;
-
- if (UTF8_IS_ASCII(c))
- *d++ = c;
- else
- *d++ = UTF8_ACCUMULATE(c, *s++);
+ if (!UTF8_IS_INVARIANT(c)) {
+ /* Then it is two-byte encoded */
+ c = UTF8_ACCUMULATE(NATIVE_TO_UTF(c), *s++);
+ c = ASCII_TO_NATIVE(c);
+ }
+ *d++ = c;
}
*d = '\0';
*len = d - start;
- return start;
+ return (U8 *)start;
}
/*
-=for apidoc A|U8 *|bytes_to_utf8|U8 *s|STRLEN *len
+=for apidoc A|U8 *|bytes_to_utf8|const U8 *s|STRLEN *len
-Converts a string C<s> of length C<len> from ASCII into UTF8 encoding.
+Converts a string C<s> of length C<len> from ASCII into UTF-8 encoding.
Returns a pointer to the newly-created string, and sets C<len> to
reflect the new length.
+If you want to convert to UTF-8 from other encodings than ASCII,
+see sv_recode_to_utf8().
+
=cut
*/
U8*
-Perl_bytes_to_utf8(pTHX_ U8* s, STRLEN *len)
+Perl_bytes_to_utf8(pTHX_ const U8 *s, STRLEN *len)
{
- U8 *send;
+ const U8 * const send = s + (*len);
U8 *d;
U8 *dst;
- send = s + (*len);
+ PERL_UNUSED_CONTEXT;
- Newz(801, d, (*len) * 2 + 1, U8);
+ Newx(d, (*len) * 2 + 1, U8);
dst = d;
while (s < send) {
- if (UTF8_IS_ASCII(*s))
- *d++ = *s++;
+ const UV uv = NATIVE_TO_ASCII(*s++);
+ if (UNI_IS_INVARIANT(uv))
+ *d++ = (U8)UTF_TO_NATIVE(uv);
else {
- UV uv = *s++;
-
- *d++ = UTF8_EIGHT_BIT_HI(uv);
- *d++ = UTF8_EIGHT_BIT_LO(uv);
+ *d++ = (U8)UTF8_EIGHT_BIT_HI(uv);
+ *d++ = (U8)UTF8_EIGHT_BIT_LO(uv);
}
}
*d = '\0';
U8* pend;
U8* dstart = d;
+ if (bytelen == 1 && p[0] == 0) { /* Be understanding. */
+ d[0] = 0;
+ *newlen = 1;
+ return d;
+ }
+
if (bytelen & 1)
- Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen");
+ Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen %"UVf, (UV)bytelen);
pend = p + bytelen;
UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */
p += 2;
if (uv < 0x80) {
- *d++ = uv;
+ *d++ = (U8)uv;
continue;
}
if (uv < 0x800) {
- *d++ = (( uv >> 6) | 0xc0);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = (U8)(( uv >> 6) | 0xc0);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
continue;
}
if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */
- UV low = *p++;
+ UV low = (p[0] << 8) + p[1];
+ p += 2;
if (low < 0xdc00 || low >= 0xdfff)
Perl_croak(aTHX_ "Malformed UTF-16 surrogate");
uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000;
}
if (uv < 0x10000) {
- *d++ = (( uv >> 12) | 0xe0);
- *d++ = (((uv >> 6) & 0x3f) | 0x80);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = (U8)(( uv >> 12) | 0xe0);
+ *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
continue;
}
else {
- *d++ = (( uv >> 18) | 0xf0);
- *d++ = (((uv >> 12) & 0x3f) | 0x80);
- *d++ = (((uv >> 6) & 0x3f) | 0x80);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = (U8)(( uv >> 18) | 0xf0);
+ *d++ = (U8)(((uv >> 12) & 0x3f) | 0x80);
+ *d++ = (U8)(((uv >> 6) & 0x3f) | 0x80);
+ *d++ = (U8)(( uv & 0x3f) | 0x80);
continue;
}
}
/* for now these are all defined (inefficiently) in terms of the utf8 versions */
bool
-Perl_is_uni_alnum(pTHX_ U32 c)
+Perl_is_uni_alnum(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_alnum(tmpbuf);
}
bool
-Perl_is_uni_alnumc(pTHX_ U32 c)
+Perl_is_uni_alnumc(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_alnumc(tmpbuf);
}
bool
-Perl_is_uni_idfirst(pTHX_ U32 c)
+Perl_is_uni_idfirst(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_idfirst(tmpbuf);
}
bool
-Perl_is_uni_alpha(pTHX_ U32 c)
+Perl_is_uni_alpha(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_alpha(tmpbuf);
}
bool
-Perl_is_uni_ascii(pTHX_ U32 c)
+Perl_is_uni_ascii(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_ascii(tmpbuf);
}
bool
-Perl_is_uni_space(pTHX_ U32 c)
+Perl_is_uni_space(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_space(tmpbuf);
}
bool
-Perl_is_uni_digit(pTHX_ U32 c)
+Perl_is_uni_digit(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_digit(tmpbuf);
}
bool
-Perl_is_uni_upper(pTHX_ U32 c)
+Perl_is_uni_upper(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_upper(tmpbuf);
}
bool
-Perl_is_uni_lower(pTHX_ U32 c)
+Perl_is_uni_lower(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_lower(tmpbuf);
}
bool
-Perl_is_uni_cntrl(pTHX_ U32 c)
+Perl_is_uni_cntrl(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_cntrl(tmpbuf);
}
bool
-Perl_is_uni_graph(pTHX_ U32 c)
+Perl_is_uni_graph(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_graph(tmpbuf);
}
bool
-Perl_is_uni_print(pTHX_ U32 c)
+Perl_is_uni_print(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_print(tmpbuf);
}
bool
-Perl_is_uni_punct(pTHX_ U32 c)
+Perl_is_uni_punct(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_punct(tmpbuf);
}
bool
-Perl_is_uni_xdigit(pTHX_ U32 c)
+Perl_is_uni_xdigit(pTHX_ UV c)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ U8 tmpbuf[UTF8_MAXBYTES_CASE+1];
+ uvchr_to_utf8(tmpbuf, c);
return is_utf8_xdigit(tmpbuf);
}
-U32
-Perl_to_uni_upper(pTHX_ U32 c)
+UV
+Perl_to_uni_upper(pTHX_ UV c, U8* p, STRLEN *lenp)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
- return to_utf8_upper(tmpbuf);
+ uvchr_to_utf8(p, c);
+ return to_utf8_upper(p, p, lenp);
}
-U32
-Perl_to_uni_title(pTHX_ U32 c)
+UV
+Perl_to_uni_title(pTHX_ UV c, U8* p, STRLEN *lenp)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
- return to_utf8_title(tmpbuf);
+ uvchr_to_utf8(p, c);
+ return to_utf8_title(p, p, lenp);
}
-U32
-Perl_to_uni_lower(pTHX_ U32 c)
+UV
+Perl_to_uni_lower(pTHX_ UV c, U8* p, STRLEN *lenp)
{
- U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
- return to_utf8_lower(tmpbuf);
+ uvchr_to_utf8(p, c);
+ return to_utf8_lower(p, p, lenp);
+}
+
+UV
+Perl_to_uni_fold(pTHX_ UV c, U8* p, STRLEN *lenp)
+{
+ uvchr_to_utf8(p, c);
+ return to_utf8_fold(p, p, lenp);
}
/* for now these all assume no locale info available for Unicode > 255 */
bool
-Perl_is_uni_alnum_lc(pTHX_ U32 c)
+Perl_is_uni_alnum_lc(pTHX_ UV c)
{
return is_uni_alnum(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_alnumc_lc(pTHX_ U32 c)
+Perl_is_uni_alnumc_lc(pTHX_ UV c)
{
return is_uni_alnumc(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_idfirst_lc(pTHX_ U32 c)
+Perl_is_uni_idfirst_lc(pTHX_ UV c)
{
return is_uni_idfirst(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_alpha_lc(pTHX_ U32 c)
+Perl_is_uni_alpha_lc(pTHX_ UV c)
{
return is_uni_alpha(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_ascii_lc(pTHX_ U32 c)
+Perl_is_uni_ascii_lc(pTHX_ UV c)
{
return is_uni_ascii(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_space_lc(pTHX_ U32 c)
+Perl_is_uni_space_lc(pTHX_ UV c)
{
return is_uni_space(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_digit_lc(pTHX_ U32 c)
+Perl_is_uni_digit_lc(pTHX_ UV c)
{
return is_uni_digit(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_upper_lc(pTHX_ U32 c)
+Perl_is_uni_upper_lc(pTHX_ UV c)
{
return is_uni_upper(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_lower_lc(pTHX_ U32 c)
+Perl_is_uni_lower_lc(pTHX_ UV c)
{
return is_uni_lower(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_cntrl_lc(pTHX_ U32 c)
+Perl_is_uni_cntrl_lc(pTHX_ UV c)
{
return is_uni_cntrl(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_graph_lc(pTHX_ U32 c)
+Perl_is_uni_graph_lc(pTHX_ UV c)
{
return is_uni_graph(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_print_lc(pTHX_ U32 c)
+Perl_is_uni_print_lc(pTHX_ UV c)
{
return is_uni_print(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_punct_lc(pTHX_ U32 c)
+Perl_is_uni_punct_lc(pTHX_ UV c)
{
return is_uni_punct(c); /* XXX no locale support yet */
}
bool
-Perl_is_uni_xdigit_lc(pTHX_ U32 c)
+Perl_is_uni_xdigit_lc(pTHX_ UV c)
{
return is_uni_xdigit(c); /* XXX no locale support yet */
}
U32
Perl_to_uni_upper_lc(pTHX_ U32 c)
{
- return to_uni_upper(c); /* XXX no locale support yet */
+ /* XXX returns only the first character -- do not use XXX */
+ /* XXX no locale support yet */
+ STRLEN len;
+ U8 tmpbuf[UTF8_MAXBYTES_CASE+1];
+ return (U32)to_uni_upper(c, tmpbuf, &len);
}
U32
Perl_to_uni_title_lc(pTHX_ U32 c)
{
- return to_uni_title(c); /* XXX no locale support yet */
+ /* XXX returns only the first character XXX -- do not use XXX */
+ /* XXX no locale support yet */
+ STRLEN len;
+ U8 tmpbuf[UTF8_MAXBYTES_CASE+1];
+ return (U32)to_uni_title(c, tmpbuf, &len);
}
U32
Perl_to_uni_lower_lc(pTHX_ U32 c)
{
- return to_uni_lower(c); /* XXX no locale support yet */
+ /* XXX returns only the first character -- do not use XXX */
+ /* XXX no locale support yet */
+ STRLEN len;
+ U8 tmpbuf[UTF8_MAXBYTES_CASE+1];
+ return (U32)to_uni_lower(c, tmpbuf, &len);
}
-bool
-Perl_is_utf8_alnum(pTHX_ U8 *p)
+static bool
+S_is_utf8_common(pTHX_ const U8 *const p, SV **swash,
+ const char *const swashname)
{
+ dVAR;
if (!is_utf8_char(p))
return FALSE;
- if (!PL_utf8_alnum)
- /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true
- * descendant of isalnum(3), in other words, it doesn't
- * contain the '_'. --jhi */
- PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_alnum, p);
-/* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */
-#ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */
- if (!PL_utf8_alnum)
- PL_utf8_alnum = swash_init("utf8", "",
- sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0);
- return swash_fetch(PL_utf8_alnum, p);
-#endif
+ if (!*swash)
+ *swash = swash_init("utf8", swashname, &PL_sv_undef, 1, 0);
+ return swash_fetch(*swash, p, TRUE) != 0;
}
bool
-Perl_is_utf8_alnumc(pTHX_ U8 *p)
+Perl_is_utf8_alnum(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_alnum)
- PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_alnum, p);
-/* return is_utf8_alpha(p) || is_utf8_digit(p); */
-#ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */
- if (!PL_utf8_alnum)
- PL_utf8_alnum = swash_init("utf8", "",
- sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0);
- return swash_fetch(PL_utf8_alnum, p);
-#endif
+ dVAR;
+ /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true
+ * descendant of isalnum(3), in other words, it doesn't
+ * contain the '_'. --jhi */
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_alnum, "IsWord");
}
bool
-Perl_is_utf8_idfirst(pTHX_ U8 *p)
+Perl_is_utf8_alnumc(pTHX_ const U8 *p)
{
- return *p == '_' || is_utf8_alpha(p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_alnumc, "IsAlnumC");
}
bool
-Perl_is_utf8_alpha(pTHX_ U8 *p)
+Perl_is_utf8_idfirst(pTHX_ const U8 *p) /* The naming is historical. */
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_alpha)
- PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_alpha, p);
+ dVAR;
+ if (*p == '_')
+ return TRUE;
+ /* is_utf8_idstart would be more logical. */
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_idstart, "IdStart");
}
bool
-Perl_is_utf8_ascii(pTHX_ U8 *p)
+Perl_is_utf8_idcont(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_ascii)
- PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_ascii, p);
+ dVAR;
+ if (*p == '_')
+ return TRUE;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_idcont, "IdContinue");
}
bool
-Perl_is_utf8_space(pTHX_ U8 *p)
+Perl_is_utf8_alpha(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_space)
- PL_utf8_space = swash_init("utf8", "IsSpacePerl", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_space, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_alpha, "IsAlpha");
}
bool
-Perl_is_utf8_digit(pTHX_ U8 *p)
+Perl_is_utf8_ascii(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_digit)
- PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_digit, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_ascii, "IsAscii");
}
bool
-Perl_is_utf8_upper(pTHX_ U8 *p)
+Perl_is_utf8_space(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_upper)
- PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_upper, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_space, "IsSpacePerl");
}
bool
-Perl_is_utf8_lower(pTHX_ U8 *p)
+Perl_is_utf8_digit(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_lower)
- PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_lower, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_digit, "IsDigit");
}
bool
-Perl_is_utf8_cntrl(pTHX_ U8 *p)
+Perl_is_utf8_upper(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_cntrl)
- PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_cntrl, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_upper, "IsUppercase");
}
bool
-Perl_is_utf8_graph(pTHX_ U8 *p)
+Perl_is_utf8_lower(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_graph)
- PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_graph, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_lower, "IsLowercase");
}
bool
-Perl_is_utf8_print(pTHX_ U8 *p)
+Perl_is_utf8_cntrl(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_print)
- PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_print, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_cntrl, "IsCntrl");
}
bool
-Perl_is_utf8_punct(pTHX_ U8 *p)
+Perl_is_utf8_graph(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_punct)
- PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_punct, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_graph, "IsGraph");
}
bool
-Perl_is_utf8_xdigit(pTHX_ U8 *p)
+Perl_is_utf8_print(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_xdigit)
- PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_xdigit, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_print, "IsPrint");
}
bool
-Perl_is_utf8_mark(pTHX_ U8 *p)
+Perl_is_utf8_punct(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_mark)
- PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_mark, p);
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_punct, "IsPunct");
}
-UV
-Perl_to_utf8_upper(pTHX_ U8 *p)
+bool
+Perl_is_utf8_xdigit(pTHX_ const U8 *p)
{
- UV uv;
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_xdigit, "Isxdigit");
+}
- if (!PL_utf8_toupper)
- PL_utf8_toupper = swash_init("utf8", "ToUpper", &PL_sv_undef, 4, 0);
- uv = swash_fetch(PL_utf8_toupper, p);
- return uv ? uv : utf8_to_uv(p,UTF8_MAXLEN,0,0);
+bool
+Perl_is_utf8_mark(pTHX_ const U8 *p)
+{
+ dVAR;
+ return S_is_utf8_common(aTHX_ p, &PL_utf8_mark, "IsM");
}
+/*
+=for apidoc A|UV|to_utf8_case|U8 *p|U8* ustrp|STRLEN *lenp|SV **swash|char *normal|char *special
+
+The "p" contains the pointer to the UTF-8 string encoding
+the character that is being converted.
+
+The "ustrp" is a pointer to the character buffer to put the
+conversion result to. The "lenp" is a pointer to the length
+of the result.
+
+The "swashp" is a pointer to the swash to use.
+
+Both the special and normal mappings are stored lib/unicore/To/Foo.pl,
+and loaded by SWASHNEW, using lib/utf8_heavy.pl. The special (usually,
+but not always, a multicharacter mapping), is tried first.
+
+The "special" is a string like "utf8::ToSpecLower", which means the
+hash %utf8::ToSpecLower. The access to the hash is through
+Perl_to_utf8_case().
+
+The "normal" is a string like "ToLower" which means the swash
+%utf8::ToLower.
+
+=cut */
+
UV
-Perl_to_utf8_title(pTHX_ U8 *p)
+Perl_to_utf8_case(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp,
+ SV **swashp, const char *normal, const char *special)
{
- UV uv;
+ dVAR;
+ U8 tmpbuf[UTF8_MAXBYTES_CASE+1];
+ STRLEN len = 0;
- if (!PL_utf8_totitle)
- PL_utf8_totitle = swash_init("utf8", "ToTitle", &PL_sv_undef, 4, 0);
- uv = swash_fetch(PL_utf8_totitle, p);
- return uv ? uv : utf8_to_uv(p,UTF8_MAXLEN,0,0);
+ const UV uv0 = utf8_to_uvchr(p, NULL);
+ /* The NATIVE_TO_UNI() and UNI_TO_NATIVE() mappings
+ * are necessary in EBCDIC, they are redundant no-ops
+ * in ASCII-ish platforms, and hopefully optimized away. */
+ const UV uv1 = NATIVE_TO_UNI(uv0);
+ uvuni_to_utf8(tmpbuf, uv1);
+
+ if (!*swashp) /* load on-demand */
+ *swashp = swash_init("utf8", normal, &PL_sv_undef, 4, 0);
+
+ /* The 0xDF is the only special casing Unicode code point below 0x100. */
+ if (special && (uv1 == 0xDF || uv1 > 0xFF)) {
+ /* It might be "special" (sometimes, but not always,
+ * a multicharacter mapping) */
+ HV *hv;
+ SV **svp;
+
+ if ((hv = get_hv(special, FALSE)) &&
+ (svp = hv_fetch(hv, (const char*)tmpbuf, UNISKIP(uv1), FALSE)) &&
+ (*svp)) {
+ const char *s;
+
+ s = SvPV_const(*svp, len);
+ if (len == 1)
+ len = uvuni_to_utf8(ustrp, NATIVE_TO_UNI(*(U8*)s)) - ustrp;
+ else {
+#ifdef EBCDIC
+ /* If we have EBCDIC we need to remap the characters
+ * since any characters in the low 256 are Unicode
+ * code points, not EBCDIC. */
+ U8 *t = (U8*)s, *tend = t + len, *d;
+
+ d = tmpbuf;
+ if (SvUTF8(*svp)) {
+ STRLEN tlen = 0;
+
+ while (t < tend) {
+ UV c = utf8_to_uvchr(t, &tlen);
+ if (tlen > 0) {
+ d = uvchr_to_utf8(d, UNI_TO_NATIVE(c));
+ t += tlen;
+ }
+ else
+ break;
+ }
+ }
+ else {
+ while (t < tend) {
+ d = uvchr_to_utf8(d, UNI_TO_NATIVE(*t));
+ t++;
+ }
+ }
+ len = d - tmpbuf;
+ Copy(tmpbuf, ustrp, len, U8);
+#else
+ Copy(s, ustrp, len, U8);
+#endif
+ }
+ }
+ }
+
+ if (!len && *swashp) {
+ UV uv2 = swash_fetch(*swashp, tmpbuf, TRUE);
+
+ if (uv2) {
+ /* It was "normal" (a single character mapping). */
+ UV uv3 = UNI_TO_NATIVE(uv2);
+
+ len = uvchr_to_utf8(ustrp, uv3) - ustrp;
+ }
+ }
+
+ if (!len) /* Neither: just copy. */
+ len = uvchr_to_utf8(ustrp, uv0) - ustrp;
+
+ if (lenp)
+ *lenp = len;
+
+ return len ? utf8_to_uvchr(ustrp, 0) : 0;
}
+/*
+=for apidoc A|UV|to_utf8_upper|const U8 *p|U8 *ustrp|STRLEN *lenp
+
+Convert the UTF-8 encoded character at p to its uppercase version and
+store that in UTF-8 in ustrp and its length in bytes in lenp. Note
+that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since
+the uppercase version may be longer than the original character.
+
+The first character of the uppercased version is returned
+(but note, as explained above, that there may be more.)
+
+=cut */
+
UV
-Perl_to_utf8_lower(pTHX_ U8 *p)
+Perl_to_utf8_upper(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp)
{
- UV uv;
+ dVAR;
+ return Perl_to_utf8_case(aTHX_ p, ustrp, lenp,
+ &PL_utf8_toupper, "ToUpper", "utf8::ToSpecUpper");
+}
+
+/*
+=for apidoc A|UV|to_utf8_title|const U8 *p|U8 *ustrp|STRLEN *lenp
+
+Convert the UTF-8 encoded character at p to its titlecase version and
+store that in UTF-8 in ustrp and its length in bytes in lenp. Note
+that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the
+titlecase version may be longer than the original character.
- if (!PL_utf8_tolower)
- PL_utf8_tolower = swash_init("utf8", "ToLower", &PL_sv_undef, 4, 0);
- uv = swash_fetch(PL_utf8_tolower, p);
- return uv ? uv : utf8_to_uv(p,UTF8_MAXLEN,0,0);
+The first character of the titlecased version is returned
+(but note, as explained above, that there may be more.)
+
+=cut */
+
+UV
+Perl_to_utf8_title(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp)
+{
+ dVAR;
+ return Perl_to_utf8_case(aTHX_ p, ustrp, lenp,
+ &PL_utf8_totitle, "ToTitle", "utf8::ToSpecTitle");
}
-/* a "swash" is a swatch hash */
+/*
+=for apidoc A|UV|to_utf8_lower|const U8 *p|U8 *ustrp|STRLEN *lenp
+Convert the UTF-8 encoded character at p to its lowercase version and
+store that in UTF-8 in ustrp and its length in bytes in lenp. Note
+that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the
+lowercase version may be longer than the original character.
+
+The first character of the lowercased version is returned
+(but note, as explained above, that there may be more.)
+
+=cut */
+
+UV
+Perl_to_utf8_lower(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp)
+{
+ dVAR;
+ return Perl_to_utf8_case(aTHX_ p, ustrp, lenp,
+ &PL_utf8_tolower, "ToLower", "utf8::ToSpecLower");
+}
+
+/*
+=for apidoc A|UV|to_utf8_fold|const U8 *p|U8 *ustrp|STRLEN *lenp
+
+Convert the UTF-8 encoded character at p to its foldcase version and
+store that in UTF-8 in ustrp and its length in bytes in lenp. Note
+that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the
+foldcase version may be longer than the original character (up to
+three characters).
+
+The first character of the foldcased version is returned
+(but note, as explained above, that there may be more.)
+
+=cut */
+
+UV
+Perl_to_utf8_fold(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp)
+{
+ dVAR;
+ return Perl_to_utf8_case(aTHX_ p, ustrp, lenp,
+ &PL_utf8_tofold, "ToFold", "utf8::ToSpecFold");
+}
+
+/* Note:
+ * A "swash" is a swatch hash.
+ * A "swatch" is a bit vector generated by utf8.c:S_swash_get().
+ * C<pkg> is a pointer to a package name for SWASHNEW, should be "utf8".
+ * For other parameters, see utf8::SWASHNEW in lib/utf8_heavy.pl.
+ */
SV*
-Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none)
+Perl_swash_init(pTHX_ const char* pkg, const char* name, SV *listsv, I32 minbits, I32 none)
{
+ dVAR;
SV* retval;
- SV* tokenbufsv = sv_2mortal(NEWSV(0,0));
+ SV* const tokenbufsv = sv_newmortal();
dSP;
+ const size_t pkg_len = strlen(pkg);
+ const size_t name_len = strlen(name);
+ HV * const stash = gv_stashpvn(pkg, pkg_len, FALSE);
+ SV* errsv_save;
- if (!gv_stashpv(pkg, 0)) { /* demand load utf8 */
+ PUSHSTACKi(PERLSI_MAGIC);
+ ENTER;
+ SAVEI32(PL_hints);
+ PL_hints = 0;
+ save_re_context();
+ if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */
ENTER;
- Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv);
+ errsv_save = newSVsv(ERRSV);
+ /* It is assumed that callers of this routine are not passing in any
+ user derived data. */
+ /* Need to do this after save_re_context() as it will set PL_tainted to
+ 1 while saving $1 etc (see the code after getrx: in Perl_magic_get).
+ Even line to create errsv_save can turn on PL_tainted. */
+ SAVEBOOL(PL_tainted);
+ PL_tainted = 0;
+ Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpvn(pkg,pkg_len),
+ NULL);
+ if (!SvTRUE(ERRSV))
+ sv_setsv(ERRSV, errsv_save);
+ SvREFCNT_dec(errsv_save);
LEAVE;
}
SPAGAIN;
- PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
EXTEND(SP,5);
- PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg))));
- PUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
+ PUSHs(sv_2mortal(newSVpvn(pkg, pkg_len)));
+ PUSHs(sv_2mortal(newSVpvn(name, name_len)));
PUSHs(listsv);
PUSHs(sv_2mortal(newSViv(minbits)));
PUSHs(sv_2mortal(newSViv(none)));
PUTBACK;
- ENTER;
- SAVEI32(PL_hints);
- PL_hints = 0;
- save_re_context();
- if (PL_curcop == &PL_compiling)
+ if (IN_PERL_COMPILETIME) {
/* XXX ought to be handled by lex_start */
+ SAVEI32(PL_in_my);
+ PL_in_my = 0;
sv_setpv(tokenbufsv, PL_tokenbuf);
+ }
+ errsv_save = newSVsv(ERRSV);
if (call_method("SWASHNEW", G_SCALAR))
retval = newSVsv(*PL_stack_sp--);
else
retval = &PL_sv_undef;
+ if (!SvTRUE(ERRSV))
+ sv_setsv(ERRSV, errsv_save);
+ SvREFCNT_dec(errsv_save);
LEAVE;
POPSTACK;
- if (PL_curcop == &PL_compiling) {
+ if (IN_PERL_COMPILETIME) {
STRLEN len;
- char* pv = SvPV(tokenbufsv, len);
+ const char* const pv = SvPV_const(tokenbufsv, len);
Copy(pv, PL_tokenbuf, len+1, char);
- PL_curcop->op_private = PL_hints;
+ PL_curcop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK);
}
- if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV)
+ if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) {
+ if (SvPOK(retval))
+ Perl_croak(aTHX_ "Can't find Unicode property definition \"%"SVf"\"",
+ retval);
Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref");
+ }
return retval;
}
+
+/* This API is wrong for special case conversions since we may need to
+ * return several Unicode characters for a single Unicode character
+ * (see lib/unicore/SpecCase.txt) The SWASHGET in lib/utf8_heavy.pl is
+ * the lower-level routine, and it is similarly broken for returning
+ * multiple values. --jhi */
+/* Now SWASHGET is recasted into S_swash_get in this file. */
+
+/* Note:
+ * Returns the value of property/mapping C<swash> for the first character
+ * of the string C<ptr>. If C<do_utf8> is true, the string C<ptr> is
+ * assumed to be in utf8. If C<do_utf8> is false, the string C<ptr> is
+ * assumed to be in native 8-bit encoding. Caches the swatch in C<swash>.
+ */
UV
-Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr)
+Perl_swash_fetch(pTHX_ SV *swash, const U8 *ptr, bool do_utf8)
{
- HV* hv = (HV*)SvRV(sv);
- U32 klen = UTF8SKIP(ptr) - 1;
- U32 off = ptr[klen] & 127; /* NB: 64 bit always 0 when len > 1 */
+ dVAR;
+ HV* const hv = (HV*)SvRV(swash);
+ U32 klen;
+ U32 off;
STRLEN slen;
- STRLEN needents = (klen ? 64 : 128);
- U8 *tmps;
+ STRLEN needents;
+ const U8 *tmps = NULL;
U32 bit;
- SV *retval;
+ SV *swatch;
+ U8 tmputf8[2];
+ UV c = NATIVE_TO_ASCII(*ptr);
+
+ if (!do_utf8 && !UNI_IS_INVARIANT(c)) {
+ tmputf8[0] = (U8)UTF8_EIGHT_BIT_HI(c);
+ tmputf8[1] = (U8)UTF8_EIGHT_BIT_LO(c);
+ ptr = tmputf8;
+ }
+ /* Given a UTF-X encoded char 0xAA..0xYY,0xZZ
+ * then the "swatch" is a vec() for al the chars which start
+ * with 0xAA..0xYY
+ * So the key in the hash (klen) is length of encoded char -1
+ */
+ klen = UTF8SKIP(ptr) - 1;
+ off = ptr[klen];
+
+ if (klen == 0) {
+ /* If char in invariant then swatch is for all the invariant chars
+ * In both UTF-8 and UTF-8-MOD that happens to be UTF_CONTINUATION_MARK
+ */
+ needents = UTF_CONTINUATION_MARK;
+ off = NATIVE_TO_UTF(ptr[klen]);
+ }
+ else {
+ /* If char is encoded then swatch is for the prefix */
+ needents = (1 << UTF_ACCUMULATION_SHIFT);
+ off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK;
+ }
/*
* This single-entry cache saves about 1/3 of the utf8 overhead in test
* NB: this code assumes that swatches are never modified, once generated!
*/
- if (hv == PL_last_swash_hv &&
+ if (hv == PL_last_swash_hv &&
klen == PL_last_swash_klen &&
- (!klen || memEQ((char *)ptr,(char *)PL_last_swash_key,klen)) )
+ (!klen || memEQ((char *)ptr, (char *)PL_last_swash_key, klen)) )
{
tmps = PL_last_swash_tmps;
slen = PL_last_swash_slen;
}
else {
/* Try our second-level swatch cache, kept in a hash. */
- SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE);
-
- /* If not cached, generate it via utf8::SWASHGET */
- if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) {
- dSP;
- ENTER;
- SAVETMPS;
- save_re_context();
- PUSHSTACKi(PERLSI_MAGIC);
- PUSHMARK(SP);
- EXTEND(SP,3);
- PUSHs((SV*)sv);
- PUSHs(sv_2mortal(newSViv(utf8_to_uv(ptr, UTF8_MAXLEN, 0, 0) & ~(needents - 1))));
- PUSHs(sv_2mortal(newSViv(needents)));
- PUTBACK;
- if (call_method("SWASHGET", G_SCALAR))
- retval = newSVsv(*PL_stack_sp--);
- else
- retval = &PL_sv_undef;
- POPSTACK;
- FREETMPS;
- LEAVE;
- if (PL_curcop == &PL_compiling)
- PL_curcop->op_private = PL_hints;
-
- svp = hv_store(hv, (char*)ptr, klen, retval, 0);
-
- if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || slen < 8)
- Perl_croak(aTHX_ "SWASHGET didn't return result of proper length");
+ SV** svp = hv_fetch(hv, (const char*)ptr, klen, FALSE);
+
+ /* If not cached, generate it via swash_get */
+ if (!svp || !SvPOK(*svp)
+ || !(tmps = (const U8*)SvPV_const(*svp, slen))) {
+ /* We use utf8n_to_uvuni() as we want an index into
+ Unicode tables, not a native character number.
+ */
+ const UV code_point = utf8n_to_uvuni(ptr, UTF8_MAXBYTES, 0,
+ ckWARN(WARN_UTF8) ?
+ 0 : UTF8_ALLOW_ANY);
+ swatch = swash_get(swash,
+ /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */
+ (klen) ? (code_point & ~(needents - 1)) : 0,
+ needents);
+
+ if (IN_PERL_COMPILETIME)
+ PL_curcop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK);
+
+ svp = hv_store(hv, (const char *)ptr, klen, swatch, 0);
+
+ if (!svp || !(tmps = (U8*)SvPV(*svp, slen))
+ || (slen << 3) < needents)
+ Perl_croak(aTHX_ "panic: swash_fetch got improper swatch");
}
PL_last_swash_hv = hv;
PL_last_swash_klen = klen;
- PL_last_swash_tmps = tmps;
+ /* FIXME change interpvar.h? */
+ PL_last_swash_tmps = (U8 *) tmps;
PL_last_swash_slen = slen;
if (klen)
Copy(ptr, PL_last_swash_key, klen, U8);
off <<= 2;
return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ;
}
- Perl_croak(aTHX_ "panic: swash_fetch");
+ Perl_croak(aTHX_ "panic: swash_fetch got swatch of unexpected bit width");
return 0;
}
+
+/* Note:
+ * Returns a swatch (a bit vector string) for a code point sequence
+ * that starts from the value C<start> and comprises the number C<span>.
+ * A C<swash> must be an object created by SWASHNEW (see lib/utf8_heavy.pl).
+ * Should be used via swash_fetch, which will cache the swatch in C<swash>.
+ */
+STATIC SV*
+S_swash_get(pTHX_ SV* swash, UV start, UV span)
+{
+ SV *swatch;
+ U8 *l, *lend, *x, *xend, *s;
+ STRLEN lcur, xcur, scur;
+
+ HV* const hv = (HV*)SvRV(swash);
+ SV** const listsvp = hv_fetchs(hv, "LIST", FALSE);
+ SV** const typesvp = hv_fetchs(hv, "TYPE", FALSE);
+ SV** const bitssvp = hv_fetchs(hv, "BITS", FALSE);
+ SV** const nonesvp = hv_fetchs(hv, "NONE", FALSE);
+ SV** const extssvp = hv_fetchs(hv, "EXTRAS", FALSE);
+ const U8* const typestr = (U8*)SvPV_nolen(*typesvp);
+ const int typeto = typestr[0] == 'T' && typestr[1] == 'o';
+ const STRLEN bits = SvUV(*bitssvp);
+ const STRLEN octets = bits >> 3; /* if bits == 1, then octets == 0 */
+ const UV none = SvUV(*nonesvp);
+ const UV end = start + span;
+
+ if (bits != 1 && bits != 8 && bits != 16 && bits != 32) {
+ Perl_croak(aTHX_ "panic: swash_get doesn't expect bits %"UVuf,
+ (UV)bits);
+ }
+
+ /* create and initialize $swatch */
+ swatch = newSVpvs("");
+ scur = octets ? (span * octets) : (span + 7) / 8;
+ SvGROW(swatch, scur + 1);
+ s = (U8*)SvPVX(swatch);
+ if (octets && none) {
+ const U8* const e = s + scur;
+ while (s < e) {
+ if (bits == 8)
+ *s++ = (U8)(none & 0xff);
+ else if (bits == 16) {
+ *s++ = (U8)((none >> 8) & 0xff);
+ *s++ = (U8)( none & 0xff);
+ }
+ else if (bits == 32) {
+ *s++ = (U8)((none >> 24) & 0xff);
+ *s++ = (U8)((none >> 16) & 0xff);
+ *s++ = (U8)((none >> 8) & 0xff);
+ *s++ = (U8)( none & 0xff);
+ }
+ }
+ *s = '\0';
+ }
+ else {
+ (void)memzero((U8*)s, scur + 1);
+ }
+ SvCUR_set(swatch, scur);
+ s = (U8*)SvPVX(swatch);
+
+ /* read $swash->{LIST} */
+ l = (U8*)SvPV(*listsvp, lcur);
+ lend = l + lcur;
+ while (l < lend) {
+ UV min, max, val, key;
+ STRLEN numlen;
+ I32 flags = PERL_SCAN_SILENT_ILLDIGIT | PERL_SCAN_DISALLOW_PREFIX;
+
+ U8* const nl = (U8*)memchr(l, '\n', lend - l);
+
+ numlen = lend - l;
+ min = grok_hex((char *)l, &numlen, &flags, NULL);
+ if (numlen)
+ l += numlen;
+ else if (nl) {
+ l = nl + 1; /* 1 is length of "\n" */
+ continue;
+ }
+ else {
+ l = lend; /* to LIST's end at which \n is not found */
+ break;
+ }
+
+ if (isBLANK(*l)) {
+ ++l;
+ flags = PERL_SCAN_SILENT_ILLDIGIT | PERL_SCAN_DISALLOW_PREFIX;
+ numlen = lend - l;
+ max = grok_hex((char *)l, &numlen, &flags, NULL);
+ if (numlen)
+ l += numlen;
+ else
+ max = min;
+
+ if (octets) {
+ if (isBLANK(*l)) {
+ ++l;
+ flags = PERL_SCAN_SILENT_ILLDIGIT |
+ PERL_SCAN_DISALLOW_PREFIX;
+ numlen = lend - l;
+ val = grok_hex((char *)l, &numlen, &flags, NULL);
+ if (numlen)
+ l += numlen;
+ else
+ val = 0;
+ }
+ else {
+ val = 0;
+ if (typeto) {
+ Perl_croak(aTHX_ "%s: illegal mapping '%s'",
+ typestr, l);
+ }
+ }
+ }
+ else
+ val = 0; /* bits == 1, then val should be ignored */
+ }
+ else {
+ max = min;
+ if (octets) {
+ val = 0;
+ if (typeto) {
+ Perl_croak(aTHX_ "%s: illegal mapping '%s'", typestr, l);
+ }
+ }
+ else
+ val = 0; /* bits == 1, then val should be ignored */
+ }
+
+ if (nl)
+ l = nl + 1;
+ else
+ l = lend;
+
+ if (max < start)
+ continue;
+
+ if (octets) {
+ if (min < start) {
+ if (!none || val < none) {
+ val += start - min;
+ }
+ min = start;
+ }
+ for (key = min; key <= max; key++) {
+ STRLEN offset;
+ if (key >= end)
+ goto go_out_list;
+ /* offset must be non-negative (start <= min <= key < end) */
+ offset = octets * (key - start);
+ if (bits == 8)
+ s[offset] = (U8)(val & 0xff);
+ else if (bits == 16) {
+ s[offset ] = (U8)((val >> 8) & 0xff);
+ s[offset + 1] = (U8)( val & 0xff);
+ }
+ else if (bits == 32) {
+ s[offset ] = (U8)((val >> 24) & 0xff);
+ s[offset + 1] = (U8)((val >> 16) & 0xff);
+ s[offset + 2] = (U8)((val >> 8) & 0xff);
+ s[offset + 3] = (U8)( val & 0xff);
+ }
+
+ if (!none || val < none)
+ ++val;
+ }
+ }
+ else { /* bits == 1, then val should be ignored */
+ if (min < start)
+ min = start;
+ for (key = min; key <= max; key++) {
+ const STRLEN offset = (STRLEN)(key - start);
+ if (key >= end)
+ goto go_out_list;
+ s[offset >> 3] |= 1 << (offset & 7);
+ }
+ }
+ } /* while */
+ go_out_list:
+
+ /* read $swash->{EXTRAS} */
+ x = (U8*)SvPV(*extssvp, xcur);
+ xend = x + xcur;
+ while (x < xend) {
+ STRLEN namelen;
+ U8 *namestr;
+ SV** othersvp;
+ HV* otherhv;
+ STRLEN otherbits;
+ SV **otherbitssvp, *other;
+ U8 *s, *o, *nl;
+ STRLEN slen, olen;
+
+ U8 opc = *x++;
+ if (opc == '\n')
+ continue;
+
+ nl = (U8*)memchr(x, '\n', xend - x);
+
+ if (opc != '-' && opc != '+' && opc != '!' && opc != '&') {
+ if (nl) {
+ x = nl + 1; /* 1 is length of "\n" */
+ continue;
+ }
+ else {
+ x = xend; /* to EXTRAS' end at which \n is not found */
+ break;
+ }
+ }
+
+ namestr = x;
+ if (nl) {
+ namelen = nl - namestr;
+ x = nl + 1;
+ }
+ else {
+ namelen = xend - namestr;
+ x = xend;
+ }
+
+ othersvp = hv_fetch(hv, (char *)namestr, namelen, FALSE);
+ otherhv = (HV*)SvRV(*othersvp);
+ otherbitssvp = hv_fetchs(otherhv, "BITS", FALSE);
+ otherbits = (STRLEN)SvUV(*otherbitssvp);
+ if (bits < otherbits)
+ Perl_croak(aTHX_ "panic: swash_get found swatch size mismatch");
+
+ /* The "other" swatch must be destroyed after. */
+ other = swash_get(*othersvp, start, span);
+ o = (U8*)SvPV(other, olen);
+
+ if (!olen)
+ Perl_croak(aTHX_ "panic: swash_get got improper swatch");
+
+ s = (U8*)SvPV(swatch, slen);
+ if (bits == 1 && otherbits == 1) {
+ if (slen != olen)
+ Perl_croak(aTHX_ "panic: swash_get found swatch length mismatch");
+
+ switch (opc) {
+ case '+':
+ while (slen--)
+ *s++ |= *o++;
+ break;
+ case '!':
+ while (slen--)
+ *s++ |= ~*o++;
+ break;
+ case '-':
+ while (slen--)
+ *s++ &= ~*o++;
+ break;
+ case '&':
+ while (slen--)
+ *s++ &= *o++;
+ break;
+ default:
+ break;
+ }
+ }
+ else {
+ STRLEN otheroctets = otherbits >> 3;
+ STRLEN offset = 0;
+ U8* send = s + slen;
+
+ while (s < send) {
+ UV otherval = 0;
+
+ if (otherbits == 1) {
+ otherval = (o[offset >> 3] >> (offset & 7)) & 1;
+ ++offset;
+ }
+ else {
+ STRLEN vlen = otheroctets;
+ otherval = *o++;
+ while (--vlen) {
+ otherval <<= 8;
+ otherval |= *o++;
+ }
+ }
+
+ if (opc == '+' && otherval)
+ /*EMPTY*/; /* replace with otherval */
+ else if (opc == '!' && !otherval)
+ otherval = 1;
+ else if (opc == '-' && otherval)
+ otherval = 0;
+ else if (opc == '&' && !otherval)
+ otherval = 0;
+ else {
+ s += octets; /* no replacement */
+ continue;
+ }
+
+ if (bits == 8)
+ *s++ = (U8)( otherval & 0xff);
+ else if (bits == 16) {
+ *s++ = (U8)((otherval >> 8) & 0xff);
+ *s++ = (U8)( otherval & 0xff);
+ }
+ else if (bits == 32) {
+ *s++ = (U8)((otherval >> 24) & 0xff);
+ *s++ = (U8)((otherval >> 16) & 0xff);
+ *s++ = (U8)((otherval >> 8) & 0xff);
+ *s++ = (U8)( otherval & 0xff);
+ }
+ }
+ }
+ sv_free(other); /* through with it! */
+ } /* while */
+ return swatch;
+}
+
+/*
+=for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv
+
+Adds the UTF-8 representation of the Native codepoint C<uv> to the end
+of the string C<d>; C<d> should be have at least C<UTF8_MAXBYTES+1> free
+bytes available. The return value is the pointer to the byte after the
+end of the new character. In other words,
+
+ d = uvchr_to_utf8(d, uv);
+
+is the recommended wide native character-aware way of saying
+
+ *(d++) = uv;
+
+=cut
+*/
+
+/* On ASCII machines this is normally a macro but we want a
+ real function in case XS code wants it
+*/
+U8 *
+Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv)
+{
+ return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), 0);
+}
+
+U8 *
+Perl_uvchr_to_utf8_flags(pTHX_ U8 *d, UV uv, UV flags)
+{
+ return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), flags);
+}
+
+/*
+=for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32
+flags
+
+Returns the native character value of the first character in the string
+C<s>
+which is assumed to be in UTF-8 encoding; C<retlen> will be set to the
+length, in bytes, of that character.
+
+Allows length and flags to be passed to low level routine.
+
+=cut
+*/
+/* On ASCII machines this is normally a macro but we want
+ a real function in case XS code wants it
+*/
+UV
+Perl_utf8n_to_uvchr(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen,
+U32 flags)
+{
+ const UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags);
+ return UNI_TO_NATIVE(uv);
+}
+
+/*
+=for apidoc A|char *|pv_uni_display|SV *dsv|U8 *spv|STRLEN len|STRLEN pvlim|UV flags
+
+Build to the scalar dsv a displayable version of the string spv,
+length len, the displayable version being at most pvlim bytes long
+(if longer, the rest is truncated and "..." will be appended).
+
+The flags argument can have UNI_DISPLAY_ISPRINT set to display
+isPRINT()able characters as themselves, UNI_DISPLAY_BACKSLASH
+to display the \\[nrfta\\] as the backslashed versions (like '\n')
+(UNI_DISPLAY_BACKSLASH is preferred over UNI_DISPLAY_ISPRINT for \\).
+UNI_DISPLAY_QQ (and its alias UNI_DISPLAY_REGEX) have both
+UNI_DISPLAY_BACKSLASH and UNI_DISPLAY_ISPRINT turned on.
+
+The pointer to the PV of the dsv is returned.
+
+=cut */
+char *
+Perl_pv_uni_display(pTHX_ SV *dsv, const U8 *spv, STRLEN len, STRLEN pvlim, UV flags)
+{
+ int truncated = 0;
+ const char *s, *e;
+
+ sv_setpvn(dsv, "", 0);
+ for (s = (const char *)spv, e = s + len; s < e; s += UTF8SKIP(s)) {
+ UV u;
+ /* This serves double duty as a flag and a character to print after
+ a \ when flags & UNI_DISPLAY_BACKSLASH is true.
+ */
+ char ok = 0;
+
+ if (pvlim && SvCUR(dsv) >= pvlim) {
+ truncated++;
+ break;
+ }
+ u = utf8_to_uvchr((U8*)s, 0);
+ if (u < 256) {
+ const unsigned char c = (unsigned char)u & 0xFF;
+ if (flags & UNI_DISPLAY_BACKSLASH) {
+ switch (c) {
+ case '\n':
+ ok = 'n'; break;
+ case '\r':
+ ok = 'r'; break;
+ case '\t':
+ ok = 't'; break;
+ case '\f':
+ ok = 'f'; break;
+ case '\a':
+ ok = 'a'; break;
+ case '\\':
+ ok = '\\'; break;
+ default: break;
+ }
+ if (ok) {
+ Perl_sv_catpvf(aTHX_ dsv, "\\%c", ok);
+ }
+ }
+ /* isPRINT() is the locale-blind version. */
+ if (!ok && (flags & UNI_DISPLAY_ISPRINT) && isPRINT(c)) {
+ Perl_sv_catpvf(aTHX_ dsv, "%c", c);
+ ok = 1;
+ }
+ }
+ if (!ok)
+ Perl_sv_catpvf(aTHX_ dsv, "\\x{%"UVxf"}", u);
+ }
+ if (truncated)
+ sv_catpvs(dsv, "...");
+
+ return SvPVX(dsv);
+}
+
+/*
+=for apidoc A|char *|sv_uni_display|SV *dsv|SV *ssv|STRLEN pvlim|UV flags
+
+Build to the scalar dsv a displayable version of the scalar sv,
+the displayable version being at most pvlim bytes long
+(if longer, the rest is truncated and "..." will be appended).
+
+The flags argument is as in pv_uni_display().
+
+The pointer to the PV of the dsv is returned.
+
+=cut */
+char *
+Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags)
+{
+ return Perl_pv_uni_display(aTHX_ dsv, (const U8*)SvPVX_const(ssv),
+ SvCUR(ssv), pvlim, flags);
+}
+
+/*
+=for apidoc A|I32|ibcmp_utf8|const char *s1|char **pe1|register UV l1|bool u1|const char *s2|char **pe2|register UV l2|bool u2
+
+Return true if the strings s1 and s2 differ case-insensitively, false
+if not (if they are equal case-insensitively). If u1 is true, the
+string s1 is assumed to be in UTF-8-encoded Unicode. If u2 is true,
+the string s2 is assumed to be in UTF-8-encoded Unicode. If u1 or u2
+are false, the respective string is assumed to be in native 8-bit
+encoding.
+
+If the pe1 and pe2 are non-NULL, the scanning pointers will be copied
+in there (they will point at the beginning of the I<next> character).
+If the pointers behind pe1 or pe2 are non-NULL, they are the end
+pointers beyond which scanning will not continue under any
+circumstances. If the byte lengths l1 and l2 are non-zero, s1+l1 and
+s2+l2 will be used as goal end pointers that will also stop the scan,
+and which qualify towards defining a successful match: all the scans
+that define an explicit length must reach their goal pointers for
+a match to succeed).
+
+For case-insensitiveness, the "casefolding" of Unicode is used
+instead of upper/lowercasing both the characters, see
+http://www.unicode.org/unicode/reports/tr21/ (Case Mappings).
+
+=cut */
+I32
+Perl_ibcmp_utf8(pTHX_ const char *s1, char **pe1, register UV l1, bool u1, const char *s2, char **pe2, register UV l2, bool u2)
+{
+ dVAR;
+ register const U8 *p1 = (const U8*)s1;
+ register const U8 *p2 = (const U8*)s2;
+ register const U8 *f1 = NULL;
+ register const U8 *f2 = NULL;
+ register U8 *e1 = NULL;
+ register U8 *q1 = NULL;
+ register U8 *e2 = NULL;
+ register U8 *q2 = NULL;
+ STRLEN n1 = 0, n2 = 0;
+ U8 foldbuf1[UTF8_MAXBYTES_CASE+1];
+ U8 foldbuf2[UTF8_MAXBYTES_CASE+1];
+ U8 natbuf[1+1];
+ STRLEN foldlen1, foldlen2;
+ bool match;
+
+ if (pe1)
+ e1 = *(U8**)pe1;
+ if (e1 == 0 || (l1 && l1 < (UV)(e1 - (const U8*)s1)))
+ f1 = (const U8*)s1 + l1;
+ if (pe2)
+ e2 = *(U8**)pe2;
+ if (e2 == 0 || (l2 && l2 < (UV)(e2 - (const U8*)s2)))
+ f2 = (const U8*)s2 + l2;
+
+ if ((e1 == 0 && f1 == 0) || (e2 == 0 && f2 == 0) || (f1 == 0 && f2 == 0))
+ return 1; /* mismatch; possible infinite loop or false positive */
+
+ if (!u1 || !u2)
+ natbuf[1] = 0; /* Need to terminate the buffer. */
+
+ while ((e1 == 0 || p1 < e1) &&
+ (f1 == 0 || p1 < f1) &&
+ (e2 == 0 || p2 < e2) &&
+ (f2 == 0 || p2 < f2)) {
+ if (n1 == 0) {
+ if (u1)
+ to_utf8_fold(p1, foldbuf1, &foldlen1);
+ else {
+ uvuni_to_utf8(natbuf, (UV) NATIVE_TO_UNI(((UV)*p1)));
+ to_utf8_fold(natbuf, foldbuf1, &foldlen1);
+ }
+ q1 = foldbuf1;
+ n1 = foldlen1;
+ }
+ if (n2 == 0) {
+ if (u2)
+ to_utf8_fold(p2, foldbuf2, &foldlen2);
+ else {
+ uvuni_to_utf8(natbuf, (UV) NATIVE_TO_UNI(((UV)*p2)));
+ to_utf8_fold(natbuf, foldbuf2, &foldlen2);
+ }
+ q2 = foldbuf2;
+ n2 = foldlen2;
+ }
+ while (n1 && n2) {
+ if ( UTF8SKIP(q1) != UTF8SKIP(q2) ||
+ (UTF8SKIP(q1) == 1 && *q1 != *q2) ||
+ memNE((char*)q1, (char*)q2, UTF8SKIP(q1)) )
+ return 1; /* mismatch */
+ n1 -= UTF8SKIP(q1);
+ q1 += UTF8SKIP(q1);
+ n2 -= UTF8SKIP(q2);
+ q2 += UTF8SKIP(q2);
+ }
+ if (n1 == 0)
+ p1 += u1 ? UTF8SKIP(p1) : 1;
+ if (n2 == 0)
+ p2 += u2 ? UTF8SKIP(p2) : 1;
+
+ }
+
+ /* A match is defined by all the scans that specified
+ * an explicit length reaching their final goals. */
+ match = (f1 == 0 || p1 == f1) && (f2 == 0 || p2 == f2);
+
+ if (match) {
+ if (pe1)
+ *pe1 = (char*)p1;
+ if (pe2)
+ *pe2 = (char*)p2;
+ }
+
+ return match ? 0 : 1; /* 0 match, 1 mismatch */
+}
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */
https://perl5.git.perl.org / perl5.git / blobdiff