/* utf8.h
*
- * Copyright (c) 1998, Larry Wall
+ * Copyright (c) 1998-2000, 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.
*
*/
+START_EXTERN_C
+
#ifdef DOINIT
-EXTCONST unsigned char utf8skip[] = {
+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, /* 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 */
-3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,7,8, /* cjk etc. */
+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 utf8skip[];
+EXTCONST unsigned char PL_utf8skip[];
#endif
-#define IN_UTF8 (curcop->op_private & HINT_UTF8)
+END_EXTERN_C
+
+#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 UTF8SKIP(s) utf8skip[*(U8*)s]
+#define UTF8SKIP(s) PL_utf8skip[*(U8*)s]
+
+/*
+ * 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) ((!c || (*((U8*)p) < 0xc0)) \
+ ? isIDFIRST(*(p)) \
+ : isIDFIRST_utf8((U8*)p))
+#define isALNUM_lazy_if(p,c) ((!c || (*((U8*)p) < 0xc0)) \
+ ? isALNUM(*(p)) \
+ : isALNUM_utf8((U8*)p))
+#define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1)
+#define isALNUM_lazy(p) isALNUM_lazy_if(p,1)