33 lines
1.5 KiB
C
33 lines
1.5 KiB
C
/*
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* alg_iso8859_7.c: Encoder/Decoder macro for ISO8859-7
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*
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* Written by Hye-Shik Chang <perky@FreeBSD.org>
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* $CJKCodecs: alg_iso8859_7.h,v 1.2 2003/12/31 05:46:55 perky Exp $
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*/
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/*
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* 0x2888fbc9 and 0xbffffd77 are magic number that indicates availability
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* of mapping for each differences. (0 and 0x2d0)
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*/
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#define ISO8859_7_ENCODE(c, assi) \
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if ((c) <= 0xa0) (assi) = (c); \
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else if ((c) < 0xc0 && (0x288f3bc9L & (1L << ((c)-0xa0)))) \
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(assi) = (c); \
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else if ((c) >= 0x0384 && (c) <= 0x03ce && ((c) >= 0x03a4 ||\
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(0xbffffd77L & (1L << ((c)-0x0384))))) \
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(assi) = (c) - 0x02d0; \
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else if ((c)>>1 == 0x2018>>1) (assi) = (c) - 0x1f77; \
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else if ((c) == 0x2015) (assi) = 0xaf;
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#define ISO8859_7_DECODE(c, assi) \
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if ((c) < 0xa0) (assi) = (c); \
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else if ((c) < 0xc0 && (0x288f3bc9L & (1L << ((c)-0xa0)))) \
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(assi) = (c); \
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else if ((c) >= 0xb4 && (c) <= 0xfe && ((c) >= 0xd4 || \
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(0xbffffd77L & (1L << ((c)-0xb4))))) \
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(assi) = 0x02d0 + (c); \
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else if ((c) == 0xa1) (assi) = 0x2018; \
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else if ((c) == 0xa2) (assi) = 0x2019; \
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else if ((c) == 0xaf) (assi) = 0x2015;
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