5e53a4f90f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
422 lines
8.4 KiB
C
422 lines
8.4 KiB
C
/* $FreeBSD$ */
|
|
/* $NetBSD: citrus_gbk2k.c,v 1.7 2008/06/14 16:01:07 tnozaki Exp $ */
|
|
|
|
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c)2003 Citrus Project,
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
|
|
#include "citrus_namespace.h"
|
|
#include "citrus_types.h"
|
|
#include "citrus_bcs.h"
|
|
#include "citrus_module.h"
|
|
#include "citrus_stdenc.h"
|
|
#include "citrus_gbk2k.h"
|
|
|
|
|
|
/* ----------------------------------------------------------------------
|
|
* private stuffs used by templates
|
|
*/
|
|
|
|
typedef struct _GBK2KState {
|
|
int chlen;
|
|
char ch[4];
|
|
} _GBK2KState;
|
|
|
|
typedef struct {
|
|
int mb_cur_max;
|
|
} _GBK2KEncodingInfo;
|
|
|
|
#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
|
|
#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
|
|
|
|
#define _FUNCNAME(m) _citrus_GBK2K_##m
|
|
#define _ENCODING_INFO _GBK2KEncodingInfo
|
|
#define _ENCODING_STATE _GBK2KState
|
|
#define _ENCODING_MB_CUR_MAX(_ei_) (_ei_)->mb_cur_max
|
|
#define _ENCODING_IS_STATE_DEPENDENT 0
|
|
#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
|
|
|
|
static __inline void
|
|
/*ARGSUSED*/
|
|
_citrus_GBK2K_init_state(_GBK2KEncodingInfo * __restrict ei __unused,
|
|
_GBK2KState * __restrict s)
|
|
{
|
|
|
|
memset(s, 0, sizeof(*s));
|
|
}
|
|
|
|
#if 0
|
|
static __inline void
|
|
/*ARGSUSED*/
|
|
_citrus_GBK2K_pack_state(_GBK2KEncodingInfo * __restrict ei __unused,
|
|
void * __restrict pspriv, const _GBK2KState * __restrict s)
|
|
{
|
|
|
|
memcpy(pspriv, (const void *)s, sizeof(*s));
|
|
}
|
|
|
|
static __inline void
|
|
/*ARGSUSED*/
|
|
_citrus_GBK2K_unpack_state(_GBK2KEncodingInfo * __restrict ei __unused,
|
|
_GBK2KState * __restrict s, const void * __restrict pspriv)
|
|
{
|
|
|
|
memcpy((void *)s, pspriv, sizeof(*s));
|
|
}
|
|
#endif
|
|
|
|
static __inline bool
|
|
_mb_singlebyte(int c)
|
|
{
|
|
|
|
return ((c & 0xff) <= 0x7f);
|
|
}
|
|
|
|
static __inline bool
|
|
_mb_leadbyte(int c)
|
|
{
|
|
|
|
c &= 0xff;
|
|
return (0x81 <= c && c <= 0xfe);
|
|
}
|
|
|
|
static __inline bool
|
|
_mb_trailbyte(int c)
|
|
{
|
|
|
|
c &= 0xff;
|
|
return ((0x40 <= c && c <= 0x7e) || (0x80 <= c && c <= 0xfe));
|
|
}
|
|
|
|
static __inline bool
|
|
_mb_surrogate(int c)
|
|
{
|
|
|
|
c &= 0xff;
|
|
return (0x30 <= c && c <= 0x39);
|
|
}
|
|
|
|
static __inline int
|
|
_mb_count(wchar_t v)
|
|
{
|
|
uint32_t c;
|
|
|
|
c = (uint32_t)v; /* XXX */
|
|
if (!(c & 0xffffff00))
|
|
return (1);
|
|
if (!(c & 0xffff0000))
|
|
return (2);
|
|
return (4);
|
|
}
|
|
|
|
#define _PSENC (psenc->ch[psenc->chlen - 1])
|
|
#define _PUSH_PSENC(c) (psenc->ch[psenc->chlen++] = (c))
|
|
|
|
static int
|
|
_citrus_GBK2K_mbrtowc_priv(_GBK2KEncodingInfo * __restrict ei,
|
|
wchar_t * __restrict pwc, char ** __restrict s, size_t n,
|
|
_GBK2KState * __restrict psenc, size_t * __restrict nresult)
|
|
{
|
|
char *s0, *s1;
|
|
wchar_t wc;
|
|
int chlenbak, len;
|
|
|
|
s0 = *s;
|
|
|
|
if (s0 == NULL) {
|
|
/* _citrus_GBK2K_init_state(ei, psenc); */
|
|
psenc->chlen = 0;
|
|
*nresult = 0;
|
|
return (0);
|
|
}
|
|
|
|
chlenbak = psenc->chlen;
|
|
|
|
switch (psenc->chlen) {
|
|
case 3:
|
|
if (!_mb_leadbyte (_PSENC))
|
|
goto invalid;
|
|
/* FALLTHROUGH */
|
|
case 2:
|
|
if (!_mb_surrogate(_PSENC) || _mb_trailbyte(_PSENC))
|
|
goto invalid;
|
|
/* FALLTHROUGH */
|
|
case 1:
|
|
if (!_mb_leadbyte (_PSENC))
|
|
goto invalid;
|
|
/* FALLTHOROUGH */
|
|
case 0:
|
|
break;
|
|
default:
|
|
goto invalid;
|
|
}
|
|
|
|
for (;;) {
|
|
if (n-- < 1)
|
|
goto restart;
|
|
|
|
_PUSH_PSENC(*s0++);
|
|
|
|
switch (psenc->chlen) {
|
|
case 1:
|
|
if (_mb_singlebyte(_PSENC))
|
|
goto convert;
|
|
if (_mb_leadbyte (_PSENC))
|
|
continue;
|
|
goto ilseq;
|
|
case 2:
|
|
if (_mb_trailbyte (_PSENC))
|
|
goto convert;
|
|
if (ei->mb_cur_max == 4 &&
|
|
_mb_surrogate (_PSENC))
|
|
continue;
|
|
goto ilseq;
|
|
case 3:
|
|
if (_mb_leadbyte (_PSENC))
|
|
continue;
|
|
goto ilseq;
|
|
case 4:
|
|
if (_mb_surrogate (_PSENC))
|
|
goto convert;
|
|
goto ilseq;
|
|
}
|
|
}
|
|
|
|
convert:
|
|
len = psenc->chlen;
|
|
s1 = &psenc->ch[0];
|
|
wc = 0;
|
|
while (len-- > 0)
|
|
wc = (wc << 8) | (*s1++ & 0xff);
|
|
|
|
if (pwc != NULL)
|
|
*pwc = wc;
|
|
*s = s0;
|
|
*nresult = (wc == 0) ? 0 : psenc->chlen - chlenbak;
|
|
/* _citrus_GBK2K_init_state(ei, psenc); */
|
|
psenc->chlen = 0;
|
|
|
|
return (0);
|
|
|
|
restart:
|
|
*s = s0;
|
|
*nresult = (size_t)-2;
|
|
|
|
return (0);
|
|
|
|
invalid:
|
|
return (EINVAL);
|
|
|
|
ilseq:
|
|
*nresult = (size_t)-1;
|
|
return (EILSEQ);
|
|
}
|
|
|
|
static int
|
|
_citrus_GBK2K_wcrtomb_priv(_GBK2KEncodingInfo * __restrict ei,
|
|
char * __restrict s, size_t n, wchar_t wc, _GBK2KState * __restrict psenc,
|
|
size_t * __restrict nresult)
|
|
{
|
|
size_t len;
|
|
int ret;
|
|
|
|
if (psenc->chlen != 0) {
|
|
ret = EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
len = _mb_count(wc);
|
|
if (n < len) {
|
|
ret = E2BIG;
|
|
goto err;
|
|
}
|
|
|
|
switch (len) {
|
|
case 1:
|
|
if (!_mb_singlebyte(_PUSH_PSENC(wc ))) {
|
|
ret = EILSEQ;
|
|
goto err;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (!_mb_leadbyte (_PUSH_PSENC(wc >> 8)) ||
|
|
!_mb_trailbyte (_PUSH_PSENC(wc))) {
|
|
ret = EILSEQ;
|
|
goto err;
|
|
}
|
|
break;
|
|
case 4:
|
|
if (ei->mb_cur_max != 4 ||
|
|
!_mb_leadbyte (_PUSH_PSENC(wc >> 24)) ||
|
|
!_mb_surrogate (_PUSH_PSENC(wc >> 16)) ||
|
|
!_mb_leadbyte (_PUSH_PSENC(wc >> 8)) ||
|
|
!_mb_surrogate (_PUSH_PSENC(wc))) {
|
|
ret = EILSEQ;
|
|
goto err;
|
|
}
|
|
break;
|
|
}
|
|
|
|
memcpy(s, psenc->ch, psenc->chlen);
|
|
*nresult = psenc->chlen;
|
|
/* _citrus_GBK2K_init_state(ei, psenc); */
|
|
psenc->chlen = 0;
|
|
|
|
return (0);
|
|
|
|
err:
|
|
*nresult = (size_t)-1;
|
|
return (ret);
|
|
}
|
|
|
|
static __inline int
|
|
/*ARGSUSED*/
|
|
_citrus_GBK2K_stdenc_wctocs(_GBK2KEncodingInfo * __restrict ei __unused,
|
|
_csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
|
|
{
|
|
uint8_t ch, cl;
|
|
|
|
if ((uint32_t)wc < 0x80) {
|
|
/* ISO646 */
|
|
*csid = 0;
|
|
*idx = (_index_t)wc;
|
|
} else if ((uint32_t)wc >= 0x10000) {
|
|
/* GBKUCS : XXX */
|
|
*csid = 3;
|
|
*idx = (_index_t)wc;
|
|
} else {
|
|
ch = (uint8_t)(wc >> 8);
|
|
cl = (uint8_t)wc;
|
|
if (ch >= 0xA1 && cl >= 0xA1) {
|
|
/* EUC G1 */
|
|
*csid = 1;
|
|
*idx = (_index_t)wc & 0x7F7FU;
|
|
} else {
|
|
/* extended area (0x8140-) */
|
|
*csid = 2;
|
|
*idx = (_index_t)wc;
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline int
|
|
/*ARGSUSED*/
|
|
_citrus_GBK2K_stdenc_cstowc(_GBK2KEncodingInfo * __restrict ei,
|
|
wchar_t * __restrict wc, _csid_t csid, _index_t idx)
|
|
{
|
|
|
|
switch (csid) {
|
|
case 0:
|
|
/* ISO646 */
|
|
*wc = (wchar_t)idx;
|
|
break;
|
|
case 1:
|
|
/* EUC G1 */
|
|
*wc = (wchar_t)idx | 0x8080U;
|
|
break;
|
|
case 2:
|
|
/* extended area */
|
|
*wc = (wchar_t)idx;
|
|
break;
|
|
case 3:
|
|
/* GBKUCS : XXX */
|
|
if (ei->mb_cur_max != 4)
|
|
return (EINVAL);
|
|
*wc = (wchar_t)idx;
|
|
break;
|
|
default:
|
|
return (EILSEQ);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline int
|
|
/*ARGSUSED*/
|
|
_citrus_GBK2K_stdenc_get_state_desc_generic(_GBK2KEncodingInfo * __restrict ei __unused,
|
|
_GBK2KState * __restrict psenc, int * __restrict rstate)
|
|
{
|
|
|
|
*rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
|
|
_STDENC_SDGEN_INCOMPLETE_CHAR;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
/*ARGSUSED*/
|
|
_citrus_GBK2K_encoding_module_init(_GBK2KEncodingInfo * __restrict ei,
|
|
const void * __restrict var, size_t lenvar)
|
|
{
|
|
const char *p;
|
|
|
|
p = var;
|
|
memset((void *)ei, 0, sizeof(*ei));
|
|
ei->mb_cur_max = 4;
|
|
while (lenvar > 0) {
|
|
switch (_bcs_tolower(*p)) {
|
|
case '2':
|
|
MATCH("2byte", ei->mb_cur_max = 2);
|
|
break;
|
|
}
|
|
p++;
|
|
lenvar--;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
/*ARGSUSED*/
|
|
_citrus_GBK2K_encoding_module_uninit(_GBK2KEncodingInfo *ei __unused)
|
|
{
|
|
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------
|
|
* public interface for stdenc
|
|
*/
|
|
|
|
_CITRUS_STDENC_DECLS(GBK2K);
|
|
_CITRUS_STDENC_DEF_OPS(GBK2K);
|
|
|
|
#include "citrus_stdenc_template.h"
|