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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2003 Ryuichiro Imura
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
/*
* kiconv(3) requires shared linked, and reduce module size
* when statically linked.
*/
#ifdef PIC
/*
* Why do we need quirks?
* Since each vendors has their own Unicode mapping rules,
* we need some quirks until iconv(3) supports them.
* We can define Microsoft mappings here.
*
* For example, the eucJP and Unocode mapping rule is based on
* the JIS standard. Since Microsoft uses cp932 for Unicode mapping
* which is not truly based on the JIS standard, reading a file
* system created by Microsoft Windows family using eucJP/Unicode
* mapping rule will cause a problem. That's why we define eucJP-ms here.
* The eucJP-ms has been defined by The Open Group Japan Vendor Council.
*
* Well, Apple Mac OS also has their own Unicode mappings,
* but we won't require these quirks here, because HFS doesn't have
* Unicode and HFS+ has decomposed Unicode which can not be
* handled by this xlat16 converter.
*/
#include <sys/types.h>
#include <sys/iconv.h>
#include <stdio.h>
#include <string.h>
#include "quirks.h"
/*
* All lists of quirk character set
*/
static struct {
int vendor; /* reserved for non MS mapping */
const char *base_codeset, *quirk_codeset;
} quirk_list[] = {
{ KICONV_VENDOR_MICSFT, "eucJP", "eucJP-ms" },
{ KICONV_VENDOR_MICSFT, "EUC-JP", "eucJP-ms" },
{ KICONV_VENDOR_MICSFT, "SJIS", "SJIS-ms" },
{ KICONV_VENDOR_MICSFT, "Shift_JIS", "SJIS-ms" },
{ KICONV_VENDOR_MICSFT, "Big5", "Big5-ms" }
};
/*
* The character list to replace for Japanese MS-Windows.
*/
static struct quirk_replace_list quirk_jis_cp932[] = {
{ 0x00a2, 0xffe0 }, /* Cent Sign, Fullwidth Cent Sign */
{ 0x00a3, 0xffe1 }, /* Pound Sign, Fullwidth Pound Sign */
{ 0x00ac, 0xffe2 }, /* Not Sign, Fullwidth Not Sign */
{ 0x2016, 0x2225 }, /* Double Vertical Line, Parallel To */
{ 0x203e, 0x007e }, /* Overline, Tilde */
{ 0x2212, 0xff0d }, /* Minus Sign, Fullwidth Hyphenminus */
{ 0x301c, 0xff5e } /* Wave Dash, Fullwidth Tilde */
};
/*
* All entries of quirks
*/
#define NumOf(n) (sizeof((n)) / sizeof((n)[0]))
static struct {
const char *quirk_codeset, *iconv_codeset, *pair_codeset;
struct quirk_replace_list (*replace_list)[];
size_t num_of_replaces;
} quirk_table[] = {
{
"eucJP-ms", "eucJP", ENCODING_UNICODE,
(struct quirk_replace_list (*)[])&quirk_jis_cp932,
NumOf(quirk_jis_cp932)
},
{
"SJIS-ms", "CP932", ENCODING_UNICODE,
/* XXX - quirk_replace_list should be NULL */
(struct quirk_replace_list (*)[])&quirk_jis_cp932,
NumOf(quirk_jis_cp932)
},
{
"Big5-ms", "CP950", ENCODING_UNICODE,
NULL, 0
}
};
const char *
kiconv_quirkcs(const char* base, int vendor)
{
size_t i;
/*
* We should compare codeset names ignoring case here,
* so that quirk could be used for all of the user input
* patterns.
*/
for (i = 0; i < NumOf(quirk_list); i++)
if (quirk_list[i].vendor == vendor &&
strcasecmp(quirk_list[i].base_codeset, base) == 0)
return (quirk_list[i].quirk_codeset);
return (base);
}
/*
* Internal Functions
*/
const char *
search_quirk(const char *given_codeset,
const char *pair_codeset,
struct quirk_replace_list **replace_list,
size_t *num_of_replaces)
{
size_t i;
*replace_list = NULL;
*num_of_replaces = 0;
for (i = 0; i < NumOf(quirk_table); i++)
if (strcmp(quirk_table[i].quirk_codeset, given_codeset) == 0) {
if (strcmp(quirk_table[i].pair_codeset, pair_codeset) == 0) {
*replace_list = *quirk_table[i].replace_list;
*num_of_replaces = quirk_table[i].num_of_replaces;
}
return (quirk_table[i].iconv_codeset);
}
return (given_codeset);
}
uint16_t
quirk_vendor2unix(uint16_t c, struct quirk_replace_list *replace_list, size_t num)
{
size_t i;
for (i = 0; i < num; i++)
if (replace_list[i].vendor_code == c)
return (replace_list[i].standard_code);
return (c);
}
uint16_t
quirk_unix2vendor(uint16_t c, struct quirk_replace_list *replace_list, size_t num)
{
size_t i;
for (i = 0; i < num; i++)
if (replace_list[i].standard_code == c)
return (replace_list[i].vendor_code);
return (c);
}
#else /* statically linked */
#include <sys/types.h>
#include <sys/iconv.h>
const char *
kiconv_quirkcs(const char* base __unused, int vendor __unused)
{
return (base);
}
#endif /* PIC */
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