109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
/*
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* Copyright (c) 1997-2006 Motoyuki Kasahara
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "build-pre.h"
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/*
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* Convert a string from JIS X 0208 to EUC JP.
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*/
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void
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eb_jisx0208_to_euc(char *out_string, const char *in_string)
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{
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unsigned char *out_p = (unsigned char *)out_string;
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const unsigned char *in_p = (unsigned char *)in_string;
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while (*in_p != '\0')
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*out_p++ = ((*in_p++) | 0x80);
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*out_p = '\0';
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}
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/*
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* Convert a string from shift-JIS to EUC JP.
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* (Shift-JIS is used only in the `LANGUAGE' file.)
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*/
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void
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eb_sjis_to_euc(char *out_string, const char *in_string)
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{
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unsigned char *out_p = (unsigned char *)out_string;
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const unsigned char *in_p = (unsigned char *)in_string;
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unsigned char c1, c2;
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for (;;) {
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/*
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* Break at '\0'.
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*/
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c1 = *in_p++;
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if (c1 == '\0')
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break;
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if (c1 <= 0x7f) {
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/*
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* JIS X 0201 Roman character.
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*/
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*out_p++ = c1;
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} else if (0xa1 <= c1 && c1 <= 0xdf) {
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/*
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* JIS X 0201 Kana.
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*/
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*out_p++ = ' ';
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} else {
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/*
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* JIS X 0208 character.
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*/
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c2 = *in_p++;
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if (c2 == 0x00)
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break;
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if (c2 < 0x9f) {
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if (c1 < 0xdf)
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c1 = ((c1 - 0x30) << 1) - 1;
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else
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c1 = ((c1 - 0x70) << 1) - 1;
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if (c2 < 0x7f)
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c2 += 0x61;
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else
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c2 += 0x60;
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} else {
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if (c1 < 0xdf)
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c1 = (c1 - 0x30) << 1;
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else
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c1 = (c1 - 0x70) << 1;
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c2 += 0x02;
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}
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*out_p++ = c1;
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*out_p++ = c2;
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}
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}
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*out_p = '\0';
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}
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