c91ab1769b
setting. It can be built by setting the WITH_ICONV knob. While this knob is unset, the library part, the binaries, the header file and the metadata files will not be built or installed so it makes no impact on the system if left turned off. This work is based on the iconv implementation in NetBSD but a great number of improvements and feature additions have been included: - Some utilities have been added. There is a conversion table generator, which can compare conversion tables to reference data generated by GNU libiconv. This helps ensuring conversion compatibility. - UTF-16 surrogate support and some endianness issues have been fixed. - The rather chaotic Makefiles to build metadata have been refactored and cleaned up, now it is easy to read and it is also easier to add support for new encodings. - A bunch of new encodings and encoding aliases have been added. - Support for 1->2, 1->3 and 1->4 mappings, which is needed for transliterating with flying accents as GNU does, like "u. - Lots of warnings have been fixed, the major part of the code is now WARNS=6 clean. - New section 1 and section 5 manual pages have been added. - Some GNU-specific calls have been implemented: iconvlist(), iconvctl(), iconv_canonicalize(), iconv_open_into() - Support for GNU's //IGNORE suffix has been added. - The "-" argument for stdin is now recognized in iconv(1) as per POSIX. - The Big5 conversion module has been fixed. - The iconv.h header files is supposed to be compatible with the GNU version, i.e. sources should build with base iconv.h and GNU libiconv. It also includes a macro magic to deal with the char ** and const char ** incompatibility. - GNU compatibility: "" or "char" means the current local encoding in use - Various cleanups and style(9) fixes. Approved by: delphij (mentor) Obtained from: The NetBSD Project Sponsored by: Google Summer of Code 2009
456 lines
9.8 KiB
C
456 lines
9.8 KiB
C
/* $FreeBSD$ */
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/* $NetBSD: citrus_zw.c,v 1.4 2008/06/14 16:01:08 tnozaki Exp $ */
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/*-
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* Copyright (c)2004, 2006 Citrus Project,
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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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*/
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <assert.h>
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#include <errno.h>
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#include <limits.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include "citrus_namespace.h"
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#include "citrus_types.h"
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#include "citrus_module.h"
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#include "citrus_stdenc.h"
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#include "citrus_zw.h"
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/* ----------------------------------------------------------------------
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* private stuffs used by templates
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*/
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typedef struct {
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int dummy;
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} _ZWEncodingInfo;
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typedef enum {
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NONE, AMBIGIOUS, ASCII, GB2312
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} _ZWCharset;
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typedef struct {
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_ZWCharset charset;
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int chlen;
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char ch[4];
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} _ZWState;
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#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
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#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
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#define _FUNCNAME(m) _citrus_ZW_##m
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#define _ENCODING_INFO _ZWEncodingInfo
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#define _ENCODING_STATE _ZWState
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#define _ENCODING_MB_CUR_MAX(_ei_) MB_LEN_MAX
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#define _ENCODING_IS_STATE_DEPENDENT 1
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#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) ((_ps_)->charset != NONE)
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static __inline void
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/*ARGSUSED*/
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_citrus_ZW_init_state(_ZWEncodingInfo * __restrict ei __unused,
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_ZWState * __restrict psenc)
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{
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psenc->chlen = 0;
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psenc->charset = NONE;
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}
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static __inline void
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/*ARGSUSED*/
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_citrus_ZW_pack_state(_ZWEncodingInfo * __restrict ei __unused,
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void *__restrict pspriv, const _ZWState * __restrict psenc)
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{
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memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
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}
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static __inline void
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/*ARGSUSED*/
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_citrus_ZW_unpack_state(_ZWEncodingInfo * __restrict ei __unused,
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_ZWState * __restrict psenc, const void * __restrict pspriv)
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{
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memcpy((void *)psenc, pspriv, sizeof(*psenc));
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}
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static int
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_citrus_ZW_mbrtowc_priv(_ZWEncodingInfo * __restrict ei,
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wchar_t * __restrict pwc, char **__restrict s, size_t n,
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_ZWState * __restrict psenc, size_t * __restrict nresult)
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{
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char *s0;
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wchar_t wc;
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int ch, len;
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if (*s == NULL) {
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_citrus_ZW_init_state(ei, psenc);
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*nresult = (size_t)_ENCODING_IS_STATE_DEPENDENT;
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return (0);
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}
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s0 = *s;
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len = 0;
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#define STORE \
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do { \
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if (n-- < 1) { \
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*nresult = (size_t)-2; \
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*s = s0; \
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return (0); \
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} \
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ch = (unsigned char)*s0++; \
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if (len++ > MB_LEN_MAX || ch > 0x7F)\
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goto ilseq; \
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psenc->ch[psenc->chlen++] = ch; \
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} while (/*CONSTCOND*/0)
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loop:
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switch (psenc->charset) {
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case ASCII:
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switch (psenc->chlen) {
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case 0:
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STORE;
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switch (psenc->ch[0]) {
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case '\0': case '\n':
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psenc->charset = NONE;
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}
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/*FALLTHROUGH*/
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case 1:
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break;
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default:
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return (EINVAL);
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}
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ch = (unsigned char)psenc->ch[0];
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if (ch > 0x7F)
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goto ilseq;
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wc = (wchar_t)ch;
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psenc->chlen = 0;
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break;
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case NONE:
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if (psenc->chlen != 0)
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return (EINVAL);
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STORE;
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ch = (unsigned char)psenc->ch[0];
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if (ch != 'z') {
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if (ch != '\n' && ch != '\0')
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psenc->charset = ASCII;
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wc = (wchar_t)ch;
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psenc->chlen = 0;
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break;
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}
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psenc->charset = AMBIGIOUS;
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psenc->chlen = 0;
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/* FALLTHROUGH */
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case AMBIGIOUS:
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if (psenc->chlen != 0)
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return (EINVAL);
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STORE;
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if (psenc->ch[0] != 'W') {
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psenc->charset = ASCII;
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wc = L'z';
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break;
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}
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psenc->charset = GB2312;
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psenc->chlen = 0;
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/* FALLTHROUGH */
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case GB2312:
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switch (psenc->chlen) {
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case 0:
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STORE;
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ch = (unsigned char)psenc->ch[0];
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if (ch == '\0') {
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psenc->charset = NONE;
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wc = (wchar_t)ch;
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psenc->chlen = 0;
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break;
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} else if (ch == '\n') {
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psenc->charset = NONE;
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psenc->chlen = 0;
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goto loop;
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}
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/*FALLTHROUGH*/
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case 1:
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STORE;
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if (psenc->ch[0] == ' ') {
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ch = (unsigned char)psenc->ch[1];
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wc = (wchar_t)ch;
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psenc->chlen = 0;
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break;
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} else if (psenc->ch[0] == '#') {
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ch = (unsigned char)psenc->ch[1];
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if (ch == '\n') {
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psenc->charset = NONE;
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wc = (wchar_t)ch;
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psenc->chlen = 0;
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break;
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} else if (ch == ' ') {
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wc = (wchar_t)ch;
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psenc->chlen = 0;
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break;
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}
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}
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ch = (unsigned char)psenc->ch[0];
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if (ch < 0x21 || ch > 0x7E)
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goto ilseq;
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wc = (wchar_t)(ch << 8);
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ch = (unsigned char)psenc->ch[1];
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if (ch < 0x21 || ch > 0x7E) {
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ilseq:
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*nresult = (size_t)-1;
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return (EILSEQ);
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}
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wc |= (wchar_t)ch;
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psenc->chlen = 0;
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break;
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default:
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return (EINVAL);
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}
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break;
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default:
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return (EINVAL);
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}
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if (pwc != NULL)
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*pwc = wc;
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*nresult = (size_t)(wc == 0 ? 0 : len);
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*s = s0;
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return (0);
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}
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static int
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/*ARGSUSED*/
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_citrus_ZW_wcrtomb_priv(_ZWEncodingInfo * __restrict ei __unused,
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char *__restrict s, size_t n, wchar_t wc,
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_ZWState * __restrict psenc, size_t * __restrict nresult)
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{
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int ch;
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if (psenc->chlen != 0)
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return (EINVAL);
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if ((uint32_t)wc <= 0x7F) {
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ch = (unsigned char)wc;
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switch (psenc->charset) {
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case NONE:
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if (ch == '\0' || ch == '\n')
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psenc->ch[psenc->chlen++] = ch;
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else {
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if (n < 4)
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return (E2BIG);
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n -= 4;
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psenc->ch[psenc->chlen++] = 'z';
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psenc->ch[psenc->chlen++] = 'W';
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psenc->ch[psenc->chlen++] = ' ';
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psenc->ch[psenc->chlen++] = ch;
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psenc->charset = GB2312;
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}
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break;
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case GB2312:
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if (n < 2)
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return (E2BIG);
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n -= 2;
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if (ch == '\0') {
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psenc->ch[psenc->chlen++] = '\n';
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psenc->ch[psenc->chlen++] = '\0';
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psenc->charset = NONE;
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} else if (ch == '\n') {
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psenc->ch[psenc->chlen++] = '#';
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psenc->ch[psenc->chlen++] = '\n';
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psenc->charset = NONE;
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} else {
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psenc->ch[psenc->chlen++] = ' ';
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psenc->ch[psenc->chlen++] = ch;
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}
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break;
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default:
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return (EINVAL);
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}
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} else if ((uint32_t)wc <= 0x7E7E) {
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switch (psenc->charset) {
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case NONE:
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if (n < 2)
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return (E2BIG);
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n -= 2;
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psenc->ch[psenc->chlen++] = 'z';
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psenc->ch[psenc->chlen++] = 'W';
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psenc->charset = GB2312;
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/* FALLTHROUGH*/
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case GB2312:
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if (n < 2)
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return (E2BIG);
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n -= 2;
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ch = (wc >> 8) & 0xFF;
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if (ch < 0x21 || ch > 0x7E)
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goto ilseq;
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psenc->ch[psenc->chlen++] = ch;
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ch = wc & 0xFF;
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if (ch < 0x21 || ch > 0x7E)
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goto ilseq;
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psenc->ch[psenc->chlen++] = ch;
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break;
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default:
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return (EINVAL);
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}
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} else {
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ilseq:
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*nresult = (size_t)-1;
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return (EILSEQ);
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}
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memcpy(s, psenc->ch, psenc->chlen);
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*nresult = psenc->chlen;
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psenc->chlen = 0;
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return (0);
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}
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static int
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/*ARGSUSED*/
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_citrus_ZW_put_state_reset(_ZWEncodingInfo * __restrict ei __unused,
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char * __restrict s, size_t n, _ZWState * __restrict psenc,
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size_t * __restrict nresult)
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{
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if (psenc->chlen != 0)
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return (EINVAL);
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switch (psenc->charset) {
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case GB2312:
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if (n-- < 1)
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return (E2BIG);
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psenc->ch[psenc->chlen++] = '\n';
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psenc->charset = NONE;
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/*FALLTHROUGH*/
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case NONE:
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*nresult = psenc->chlen;
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if (psenc->chlen > 0) {
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memcpy(s, psenc->ch, psenc->chlen);
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psenc->chlen = 0;
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}
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break;
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default:
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return (EINVAL);
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}
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return (0);
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_ZW_stdenc_get_state_desc_generic(_ZWEncodingInfo * __restrict ei __unused,
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_ZWState * __restrict psenc, int * __restrict rstate)
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{
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switch (psenc->charset) {
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case NONE:
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if (psenc->chlen != 0)
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return (EINVAL);
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*rstate = _STDENC_SDGEN_INITIAL;
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break;
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case AMBIGIOUS:
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if (psenc->chlen != 0)
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return (EINVAL);
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*rstate = _STDENC_SDGEN_INCOMPLETE_SHIFT;
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break;
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case ASCII:
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case GB2312:
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switch (psenc->chlen) {
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case 0:
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*rstate = _STDENC_SDGEN_STABLE;
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break;
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case 1:
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*rstate = (psenc->ch[0] == '#') ?
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_STDENC_SDGEN_INCOMPLETE_SHIFT :
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_STDENC_SDGEN_INCOMPLETE_CHAR;
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break;
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default:
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return (EINVAL);
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}
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break;
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default:
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return (EINVAL);
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}
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return (0);
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_ZW_stdenc_wctocs(_ZWEncodingInfo * __restrict ei __unused,
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_csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
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{
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*csid = (_csid_t)(wc <= (wchar_t)0x7FU) ? 0 : 1;
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*idx = (_index_t)wc;
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return (0);
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_ZW_stdenc_cstowc(_ZWEncodingInfo * __restrict ei __unused,
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wchar_t * __restrict wc, _csid_t csid, _index_t idx)
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{
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switch (csid) {
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case 0: case 1:
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break;
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default:
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return (EINVAL);
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}
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*wc = (wchar_t)idx;
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return (0);
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}
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static void
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/*ARGSUSED*/
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_citrus_ZW_encoding_module_uninit(_ZWEncodingInfo *ei __unused)
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{
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}
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static int
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/*ARGSUSED*/
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_citrus_ZW_encoding_module_init(_ZWEncodingInfo * __restrict ei __unused,
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const void *__restrict var __unused, size_t lenvar __unused)
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{
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return (0);
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}
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/* ----------------------------------------------------------------------
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* public interface for stdenc
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*/
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_CITRUS_STDENC_DECLS(ZW);
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_CITRUS_STDENC_DEF_OPS(ZW);
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#include "citrus_stdenc_template.h"
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