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