mirror of
https://git.savannah.gnu.org/git/emacs.git
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73 lines
1.8 KiB
Awk
73 lines
1.8 KiB
Awk
# Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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# National Institute of Advanced Industrial Science and Technology (AIST)
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# Registration Number H13PRO009
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# This file is part of GNU Emacs.
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# GNU Emacs is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# GNU Emacs is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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BEGIN {
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tohex["A"] = 10;
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tohex["B"] = 11;
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tohex["C"] = 12;
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tohex["D"] = 13;
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tohex["E"] = 14;
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tohex["F"] = 15;
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tohex["a"] = 10;
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tohex["b"] = 11;
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tohex["c"] = 12;
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tohex["d"] = 13;
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tohex["e"] = 14;
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tohex["f"] = 15;
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}
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function decode_hex(str) {
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n = 0;
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len = length(str);
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for (i = 1; i <= len; i++)
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{
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c = substr (str, i, 1);
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if (c >= "0" && c <= "9")
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n = n * 16 + (c - "0");
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else
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n = n * 16 + tohex[c];
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}
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return n;
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}
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function decode_big5(big5) {
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b0 = int(big5 / 256);
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b1 = big5 % 256;
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# (0xFF - 0xA1 + 0x7F - 0x40) = 157
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# (0xA1 - (0x7F - 0x40)) = 98
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# (0xC9 - 0xA1) * (0xFF - 0xA1 + 0x7F - 0x40) = 6280
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if (b1 < 127)
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idx = (b0 - 161) * 157 + (b1 - 64);
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else
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idx = (b0 - 161) * 157 + (b1 - 98);
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if (b0 >= 201)
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idx -= 6280;
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b0 = int(idx / 94) + 33;
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b1 = (idx % 94) + 33;
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return (b0 * 256 + b1)
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}
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{
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big5 = decode_hex($1);
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code = decode_big5(big5);
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printf "0x%04X %s\n", code, $2;
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}
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