X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/39e02b423749ca43aca0385eea6257ecde9aee92..028d1f6dbd73ccf759b83a967937383c9b3e0ae9:/utf8.h

diff --git a/utf8.h b/utf8.h
index c475d0f..feff1b4 100644
--- a/utf8.h
+++ b/utf8.h
@@ -1,6 +1,6 @@
 /*    utf8.h
  *
- *    Copyright (c) 1998-2001, 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.
@@ -135,7 +135,14 @@ END_EXTERN_C
 #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 */
+/* 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)
@@ -153,7 +160,7 @@ END_EXTERN_C
 					 UTF8_ALLOW_SURROGATE|UTF8_ALLOW_BOM|\
 					 UTF8_ALLOW_FFFF|UTF8_ALLOW_LONG)
 #define UTF8_ALLOW_ANY			0x00ff
-#define UTF8_CHECK_ONLY			0x0100
+#define UTF8_CHECK_ONLY			0x0200
 
 #define UNICODE_SURROGATE_FIRST		0xd800
 #define UNICODE_SURROGATE_LAST		0xdfff
@@ -161,6 +168,17 @@ END_EXTERN_C
 #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)
@@ -172,3 +190,34 @@ END_EXTERN_C
 #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