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-rw-r--r--Build/source/texk/ptexenc/unicode.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/Build/source/texk/ptexenc/unicode.h b/Build/source/texk/ptexenc/unicode.h
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index 00000000000..b3e1d5ee83c
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+++ b/Build/source/texk/ptexenc/unicode.h
@@ -0,0 +1,50 @@
+/*
+ unicode.h -- utilities for Unicode
+ written by N. Tsuchimura
+*/
+
+#ifndef PTEXENC_UNICODE_H
+#define PTEXENC_UNICODE_H
+
+#include <kpathsea/types.h>
+
+/* determine if UTF-8 character or not */
+extern KPSEDLL boolean isUTF8(int length, int nth, int c);
+
+extern KPSEDLL int UTF8length(int first_byte);
+extern KPSEDLL int UTF8Slength(string buff, int buff_len);
+extern KPSEDLL long UTF8StoUCS(string s);
+extern KPSEDLL long UCStoUTF8(long ucs);
+
+#define LONG(a,b,c,d) ( ((long)(a)<<24) | ((long)(b)<<16) | ((c)<<8) | (d) )
+#define BYTE1(x) (((x)>>24) & 0xff)
+#define BYTE2(x) (((x)>>16) & 0xff)
+#define BYTE3(x) (((x)>> 8) & 0xff)
+#define BYTE4(x) ( (x) & 0xff)
+
+
+/* UTF-8 -> UCS */
+#define UTF8BtoUCS(a,b) ((((a)&0x1f) << 6) | ((b)&0x3f))
+#define UTF8CtoUCS(a,b,c) ((((a)&0x0f) <<12) | (((b)&0x3f) << 6) | ((c)&0x3f))
+#define UTF8DtoUCS(a,b,c,d) ((((long)(a)&0x07) <<18) | \
+ (((long)(b)&0x3f) <<12) | \
+ (((long)(c)&0x3f) << 6) | ((d)&0x3f))
+
+/* UCS -> UTF-8 */
+#define UCStoUTF8B1(x) (0xc0 + (((x) >> 6) & 0x1f))
+#define UCStoUTF8B2(x) (0x80 + (((x) ) & 0x3f))
+
+#define UCStoUTF8C1(x) (0xe0 + (((x) >> 12) & 0x0f))
+#define UCStoUTF8C2(x) (0x80 + (((x) >> 6) & 0x3f))
+#define UCStoUTF8C3(x) (0x80 + (((x) ) & 0x3f))
+
+#define UCStoUTF8D1(x) (0xf0 + (((x) >> 18) & 0x07))
+#define UCStoUTF8D2(x) (0x80 + (((x) >> 12) & 0x3f))
+#define UCStoUTF8D3(x) (0x80 + (((x) >> 6) & 0x3f))
+#define UCStoUTF8D4(x) (0x80 + (((x) ) & 0x3f))
+
+/* UTF-32 over U+FFFF -> UTF-16 surrogate pair */
+#define UTF32toUTF16HS(x) (0xd800 + ((((x)-0x10000) >> 10) & 0x3ff))
+#define UTF32toUTF16LS(x) (0xdc00 + ( (x) & 0x3ff))
+
+#endif /* PTEXENC_UNICODE_H */