/* utf8.h * * Copyright (c) 1998-2001, 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 EXTCONST unsigned char PL_utf8skip[] = { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* bogus */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* bogus */ 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* scripts */ 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6, /* cjk etc. */ 7,13, /* Perl extended (not UTF-8). Up to 72bit allowed (64-bit + reserved). */ }; #else EXTCONST unsigned char PL_utf8skip[]; #endif END_EXTERN_C #define UTF8SKIP(s) PL_utf8skip[*(U8*)s] /* 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) /* 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) < 0x800 ? 2 : \ (uv) < 0x10000 ? 3 : \ (uv) < 0x200000 ? 4 : \ (uv) < 0x4000000 ? 5 : \ (uv) < 0x80000000 ? 6 : \ (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) < 0x800 ? 2 : \ (uv) < 0x10000 ? 3 : \ (uv) < 0x200000 ? 4 : \ (uv) < 0x4000000 ? 5 : \ (uv) < 0x80000000 ? 6 : 7 ) #endif /* * 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. */ #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_BYTES || (!c || (*((U8*)p) < 0xc0))) \ ? isALNUM(*(p)) \ : isALNUM_utf8((U8*)p)) #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) #define UTF8_MAXLEN 13 /* how wide can a single UTF8 encoded character become */ #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 #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)