/* utf8.h
*
- * Copyright (c) 1998-2000, Larry Wall
+ * Copyright (c) 1998-2002, 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.
*
*/
+/* Use UTF-8 as the default script encoding?
+ * Turning this on will break scripts having non-UTF8 binary
+ * data (such as Latin-1) in string literals. */
+#ifdef USE_UTF8_SCRIPTS
+# define USE_UTF8_IN_NAMES (!IN_BYTES)
+#else
+# define USE_UTF8_IN_NAMES (PL_hints & HINT_UTF8)
+#endif
+
+#ifdef EBCDIC
+/* The equivalent of these macros but implementing UTF-EBCDIC
+ are in the following header file:
+ */
+
+#include "utfebcdic.h"
+#else
START_EXTERN_C
#ifdef DOINIT
#endif
END_EXTERN_C
+#define UTF8SKIP(s) PL_utf8skip[*(U8*)s]
-#define UTF8_MAXLEN 13 /* how wide can a single UTF8 encoded character become */
-
-/* #define IN_UTF8 (PL_curcop->op_private & HINT_UTF8) */
-#define IN_BYTE (PL_curcop->op_private & HINT_BYTE)
-#define DO_UTF8(sv) (SvUTF8(sv) && !IN_BYTE)
-
-#define UTF8_ALLOW_CONTINUATION 0x0001
-#define UTF8_ALLOW_NON_CONTINUATION 0x0002
-#define UTF8_ALLOW_FE_FF 0x0004
-#define UTF8_ALLOW_SHORT 0x0008
-#define UTF8_ALLOW_SURROGATE 0x0010
-#define UTF8_ALLOW_BOM 0x0020
-#define UTF8_ALLOW_FFFF 0x0040
-#define UTF8_ALLOW_LONG 0x0080
-#define UTF8_ALLOW_ANYUV (UTF8_ALLOW_FE_FF|UTF8_ALLOW_FFFF \
- |UTF8_ALLOW_BOM|UTF8_ALLOW_SURROGATE)
-#define UTF8_ALLOW_ANY 0x00ff
-#define UTF8_CHECK_ONLY 0x0100
+/* Native character to iso-8859-1 */
+#define NATIVE_TO_ASCII(ch) (ch)
+#define ASCII_TO_NATIVE(ch) (ch)
+/* Transform after encoding */
+#define NATIVE_TO_UTF(ch) (ch)
+#define UTF_TO_NATIVE(ch) (ch)
+/* Transforms in wide UV chars */
+#define UNI_TO_NATIVE(ch) (ch)
+#define NATIVE_TO_UNI(ch) (ch)
+/* Transforms in invariant space */
+#define NATIVE_TO_NEED(enc,ch) (ch)
+#define ASCII_TO_NEED(enc,ch) (ch)
-#define UTF8SKIP(s) PL_utf8skip[*(U8*)s]
+/* As there are no translations avoid the function wrapper */
+#define Perl_utf8n_to_uvchr Perl_utf8n_to_uvuni
+#define Perl_uvchr_to_utf8 Perl_uvuni_to_utf8
+
+/*
+
+ The following table is from Unicode 3.1.
+
+ Code Points 1st Byte 2nd Byte 3rd Byte 4th Byte
+
+ U+0000..U+007F 00..7F
+ U+0080..U+07FF C2..DF 80..BF
+ U+0800..U+0FFF E0 A0..BF 80..BF
+ U+1000..U+FFFF E1..EF 80..BF 80..BF
+ U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
+ U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
+ U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
+
+ */
+
+#define UNI_IS_INVARIANT(c) (((UV)c) < 0x80)
+#define UTF8_IS_INVARIANT(c) UNI_IS_INVARIANT(NATIVE_TO_UTF(c))
+#define NATIVE_IS_INVARIANT(c) UNI_IS_INVARIANT(NATIVE_TO_ASCII(c))
+#define UTF8_IS_START(c) (((U8)c) >= 0xc0 && (((U8)c) <= 0xfd))
+#define UTF8_IS_CONTINUATION(c) (((U8)c) >= 0x80 && (((U8)c) <= 0xbf))
+#define UTF8_IS_CONTINUED(c) (((U8)c) & 0x80)
+#define UTF8_IS_DOWNGRADEABLE_START(c) (((U8)c & 0xfc) == 0xc0)
+
+#define UTF_START_MARK(len) ((len > 7) ? 0xFF : (0xFE << (7-len)))
+#define UTF_START_MASK(len) ((len >= 7) ? 0x00 : (0x1F >> (len-2)))
+
+#define UTF_CONTINUATION_MARK 0x80
+#define UTF_ACCUMULATION_SHIFT 6
+#define UTF_CONTINUATION_MASK ((U8)0x3f)
+#define UTF8_ACCUMULATE(old, new) (((old) << UTF_ACCUMULATION_SHIFT) | (((U8)new) & UTF_CONTINUATION_MASK))
+
+#define UTF8_EIGHT_BIT_HI(c) ((((U8)(c))>>UTF_ACCUMULATION_SHIFT)|UTF_START_MARK(2))
+#define UTF8_EIGHT_BIT_LO(c) (((((U8)(c)))&UTF_CONTINUATION_MASK)|UTF_CONTINUATION_MARK)
#ifdef HAS_QUAD
#define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \
(uv) < 0x200000 ? 4 : \
(uv) < 0x4000000 ? 5 : \
(uv) < 0x80000000 ? 6 : \
- (uv) < 0x1000000000LL ? 7 : 13 )
+ (uv) < UTF8_QUAD_MAX ? 7 : 13 )
#else
/* No, I'm not even going to *TRY* putting #ifdef inside a #define */
#define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \
(uv) < 0x80000000 ? 6 : 7 )
#endif
-#define UNICODE_REPLACEMENT_CHARACTER 0xfffd
-
/*
* Note: we try to be careful never to call the isXXX_utf8() functions
* unless we're pretty sure we've seen the beginning of a UTF-8 character
* (that is, the two high bits are set). Otherwise we risk loading in the
* heavy-duty SWASHINIT and SWASHGET routines unnecessarily.
*/
-#ifdef EBCDIC
-#define isIDFIRST_lazy_if(p,c) isIDFIRST(*(p))
-#define isALNUM_lazy_if(p,c) isALNUM(*(p))
-#else
-#define isIDFIRST_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \
+#define isIDFIRST_lazy_if(p,c) ((IN_BYTES || (!c || (*((U8*)p) < 0xc0))) \
? isIDFIRST(*(p)) \
: isIDFIRST_utf8((U8*)p))
-#define isALNUM_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \
+#define isALNUM_lazy_if(p,c) ((IN_BYTES || (!c || (*((U8*)p) < 0xc0))) \
? isALNUM(*(p)) \
: isALNUM_utf8((U8*)p))
-#endif
+
+
+#endif /* EBCDIC vs ASCII */
+
+/* Rest of these are attributes of Unicode and perl's internals rather than the encoding */
+
#define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1)
#define isALNUM_lazy(p) isALNUM_lazy_if(p,1)
+
+/* how wide can a single UTF8 encoded character become */
+#define UTF8_MAXLEN 13
+/* how wide a character can become when upper/lowercased */
+#define UTF8_MAXLEN_UCLC_MULT 3
+#define UTF8_MAXLEN_UCLC (UTF8_MAXLEN*UTF8_MAXLEN_UCLC_MULT)
+/* how wide a character can become when casefolded */
+#define UTF8_MAXLEN_FOLD_MULT 3
+#define UTF8_MAXLEN_FOLD (UTF8_MAXLEN*UTF8_MAXLEN_FOLD_MULT)
+
+#define IN_BYTES (PL_curcop->op_private & HINT_BYTES)
+#define DO_UTF8(sv) (SvUTF8(sv) && !IN_BYTES)
+
+#define UTF8_ALLOW_EMPTY 0x0001
+#define UTF8_ALLOW_CONTINUATION 0x0002
+#define UTF8_ALLOW_NON_CONTINUATION 0x0004
+#define UTF8_ALLOW_FE_FF 0x0008
+#define UTF8_ALLOW_SHORT 0x0010
+#define UTF8_ALLOW_SURROGATE 0x0020
+#define UTF8_ALLOW_BOM 0x0040
+#define UTF8_ALLOW_FFFF 0x0080
+#define UTF8_ALLOW_LONG 0x0100
+#define UTF8_ALLOW_ANYUV (UTF8_ALLOW_EMPTY|UTF8_ALLOW_FE_FF|\
+ UTF8_ALLOW_SURROGATE|UTF8_ALLOW_BOM|\
+ UTF8_ALLOW_FFFF|UTF8_ALLOW_LONG)
+#define UTF8_ALLOW_ANY 0x00ff
+#define UTF8_CHECK_ONLY 0x0200
+
+#define UNICODE_SURROGATE_FIRST 0xd800
+#define UNICODE_SURROGATE_LAST 0xdfff
+#define UNICODE_REPLACEMENT 0xfffd
+#define UNICODE_BYTER_ORDER_MARK 0xfffe
+#define UNICODE_ILLEGAL 0xffff
+
+/* Though our UTF-8 encoding can go beyond this,
+ * let's be conservative. */
+#define PERL_UNICODE_MAX 0x10FFFF
+
+#define UNICODE_ALLOW_SURROGATE 0x0001 /* Allow UTF-16 surrogates (EVIL) */
+#define UNICODE_ALLOW_FDD0 0x0002 /* Allow the U+FDD0...U+FDEF */
+#define UNICODE_ALLOW_FFFE 0x0004 /* Allow 0xFFFE, 0x1FFFE, ... */
+#define UNICODE_ALLOW_FFFF 0x0008 /* Allow 0xFFFE, 0x1FFFE, ... */
+#define UNICODE_ALLOW_SUPER 0x0010 /* Allow past 10xFFFF */
+#define UNICODE_ALLOW_ANY 0xFFFF
+
+#define UNICODE_IS_SURROGATE(c) ((c) >= UNICODE_SURROGATE_FIRST && \
+ (c) <= UNICODE_SURROGATE_LAST)
+#define UNICODE_IS_REPLACEMENT(c) ((c) == UNICODE_REPLACEMENT)
+#define UNICODE_IS_BYTE_ORDER_MARK(c) ((c) == UNICODE_BYTER_ORDER_MARK)
+#define UNICODE_IS_ILLEGAL(c) ((c) == UNICODE_ILLEGAL)
+
+#ifdef HAS_QUAD
+# define UTF8_QUAD_MAX UINT64_C(0x1000000000)
+#endif
+
+#define UTF8_IS_ASCII(c) UTF8_IS_INVARIANT(c)
+
+#define UNICODE_LATIN_SMALL_LETTER_SHARP_S 0x00DF
+#define UNICODE_GREEK_CAPITAL_LETTER_SIGMA 0x03A3
+#define UNICODE_GREEK_SMALL_LETTER_FINAL_SIGMA 0x03C2
+#define UNICODE_GREEK_SMALL_LETTER_SIGMA 0x03C3
+
+#define EBCDIC_LATIN_SMALL_LETTER_SHARP_S 0x0059
+
+#define UNI_DISPLAY_ISPRINT 0x0001
+#define UNI_DISPLAY_BACKSLASH 0x0002
+#define UNI_DISPLAY_QQ (UNI_DISPLAY_ISPRINT|UNI_DISPLAY_BACKSLASH)
+#define UNI_DISPLAY_REGEX (UNI_DISPLAY_ISPRINT|UNI_DISPLAY_BACKSLASH)
+
+#ifdef EBCDIC
+# define ANYOF_FOLD_SHARP_S(node, input, end) \
+ (ANYOF_BITMAP_TEST(node, EBCDIC_LATIN_SMALL_LETTER_SHARP_S) && \
+ (ANYOF_FLAGS(node) & ANYOF_UNICODE) && \
+ (ANYOF_FLAGS(node) & ANYOF_FOLD) && \
+ ((end) > (input) + 1) && \
+ toLOWER((input)[0]) == 's' && \
+ toLOWER((input)[1]) == 's')
+#else
+# define ANYOF_FOLD_SHARP_S(node, input, end) \
+ (ANYOF_BITMAP_TEST(node, UNICODE_LATIN_SMALL_LETTER_SHARP_S) && \
+ (ANYOF_FLAGS(node) & ANYOF_UNICODE) && \
+ (ANYOF_FLAGS(node) & ANYOF_FOLD) && \
+ ((end) > (input) + 1) && \
+ toLOWER((input)[0]) == 's' && \
+ toLOWER((input)[1]) == 's')
+#endif
+#define SHARP_S_SKIP 2
https://perl5.git.perl.org / perl5.git / blobdiff