Mercurial > otakunoraifu
view font/codeconv.cc @ 67:419761c8d9b9
Add configure option to build scn2kdump.
author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
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date | Wed, 23 Feb 2011 01:48:51 +0100 (2011-02-23) |
parents | 15a18fbe6f21 |
children |
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/* * Copyright (c) 2000 Yuki Sawada * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "codeconv.h" #include "codeconv_tbl.h" unsigned int codeconv_euc_to_jis(unsigned int euc) { unsigned int hi, low; hi = (euc >> 8) & 0xff; low = euc & 0xff; if (hi < 0x81) { hi = 0; } else if (low == 0x8e) hi = 0; else { hi -= 0x80; low -= 0x80; } return (hi << 8) | low; } static unsigned int codeconv_jis_to_unicode(unsigned int jis) { int k0, k1; if (jis < 0x80) return jis; // ASCII k0 = (jis >> 8) - 0x20; if (k0 < 1 || k0 > 92) return 0; k1 = (jis % 0x100) - 0x20; if (k1 < 1 || k1 > 94) return 0; return unicode_tbl[k0 - 1][k1 - 1]; } unsigned int codeconv_euc_to_unicode(unsigned int euc) { unsigned int jis, unicode; jis = codeconv_euc_to_jis(euc); unicode = codeconv_jis_to_unicode(jis); return unicode; } static unsigned int codeconv_unicode_to_jis(unsigned int unicode) { int k0, k1; unsigned int jis; k0 = (unicode >> 8) & 0xff; k1 = unicode & 0xff; jis = unicode_rev_table[k0][k1]; return jis; } static unsigned int codeconv_jis_to_euc(unsigned int jis) { unsigned int hi, low; hi = (jis >> 8) & 0x7f | 0x80; low = jis & 0x7f | 0x80; return (hi << 8) | low; } unsigned int codeconv_unicode_to_euc(unsigned int unicode) { unsigned int jis, euc; if (unicode >= 0xff61 && unicode <= 0xff9f) return unicode - 0xff61 + 0x8ea1; jis = codeconv_unicode_to_jis(unicode); if (jis == 0) return 0x7878; euc = codeconv_jis_to_euc(jis); return euc; } static unsigned int codeconv_jis_to_sjis(unsigned int jis) { unsigned int hi, low; hi = (jis >> 8) & 0xff; low = jis & 0xff; low += (hi & 0x01) ? 0x1f : 0x7d; if (low >= 0x7f) low++; hi = ((hi - 0x21) >> 1) + 0x81; if (hi > 0x9f) hi += 0x40; return (hi << 8) | low; } unsigned int codeconv_euc_to_sjis(unsigned int euc) { unsigned int jis, sjis; jis = codeconv_euc_to_jis(euc); sjis = codeconv_jis_to_sjis(jis); return sjis; } static unsigned int codeconv_sjis_to_jis(unsigned int sjis) { unsigned int hi, low; hi = (sjis >> 8) & 0xff; low = sjis & 0xff; hi -= (hi <= 0x9f) ? 0x71 : 0xb1; hi = (hi << 1) + 1; if (low > 0x7f) low--; if (low >= 0x9e) { low -= 0x7d; hi++; } else low -= 0x1f; return (hi << 8) | low; } unsigned int codeconv_sjis_to_euc(unsigned int sjis) { unsigned int jis, euc; jis = codeconv_sjis_to_jis(sjis); euc = codeconv_jis_to_euc(jis); return euc; } unsigned int codeconv_euc_to_latin1(unsigned int euc) { int high = (euc>>8) & 0xff; if (high) return 0; return euc & 0xff; }