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.
417 lines
8.9 KiB
C
417 lines
8.9 KiB
C
/* $FreeBSD$ */
|
|
/* $NetBSD: citrus_ues.c,v 1.3 2012/02/12 13:51:29 wiz Exp $ */
|
|
|
|
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c)2006 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 <assert.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdint.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_ues.h"
|
|
|
|
typedef struct {
|
|
size_t mb_cur_max;
|
|
int mode;
|
|
#define MODE_C99 1
|
|
} _UESEncodingInfo;
|
|
|
|
typedef struct {
|
|
int chlen;
|
|
char ch[12];
|
|
} _UESState;
|
|
|
|
#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
|
|
#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
|
|
|
|
#define _FUNCNAME(m) _citrus_UES_##m
|
|
#define _ENCODING_INFO _UESEncodingInfo
|
|
#define _ENCODING_STATE _UESState
|
|
#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_UES_init_state(_UESEncodingInfo * __restrict ei __unused,
|
|
_UESState * __restrict psenc)
|
|
{
|
|
|
|
psenc->chlen = 0;
|
|
}
|
|
|
|
#if 0
|
|
static __inline void
|
|
/*ARGSUSED*/
|
|
_citrus_UES_pack_state(_UESEncodingInfo * __restrict ei __unused,
|
|
void *__restrict pspriv, const _UESState * __restrict psenc)
|
|
{
|
|
|
|
memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
|
|
}
|
|
|
|
static __inline void
|
|
/*ARGSUSED*/
|
|
_citrus_UES_unpack_state(_UESEncodingInfo * __restrict ei __unused,
|
|
_UESState * __restrict psenc, const void * __restrict pspriv)
|
|
{
|
|
|
|
memcpy((void *)psenc, pspriv, sizeof(*psenc));
|
|
}
|
|
#endif
|
|
|
|
static __inline int
|
|
to_int(int ch)
|
|
{
|
|
|
|
if (ch >= '0' && ch <= '9')
|
|
return (ch - '0');
|
|
else if (ch >= 'A' && ch <= 'F')
|
|
return ((ch - 'A') + 10);
|
|
else if (ch >= 'a' && ch <= 'f')
|
|
return ((ch - 'a') + 10);
|
|
return (-1);
|
|
}
|
|
|
|
#define ESCAPE '\\'
|
|
#define UCS2_ESC 'u'
|
|
#define UCS4_ESC 'U'
|
|
|
|
#define UCS2_BIT 16
|
|
#define UCS4_BIT 32
|
|
#define BMP_MAX UINT32_C(0xFFFF)
|
|
#define UCS2_MAX UINT32_C(0x10FFFF)
|
|
#define UCS4_MAX UINT32_C(0x7FFFFFFF)
|
|
|
|
static const char *xdig = "0123456789abcdef";
|
|
|
|
static __inline int
|
|
to_str(char *s, wchar_t wc, int bit)
|
|
{
|
|
char *p;
|
|
|
|
p = s;
|
|
*p++ = ESCAPE;
|
|
switch (bit) {
|
|
case UCS2_BIT:
|
|
*p++ = UCS2_ESC;
|
|
break;
|
|
case UCS4_BIT:
|
|
*p++ = UCS4_ESC;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
do {
|
|
*p++ = xdig[(wc >> (bit -= 4)) & 0xF];
|
|
} while (bit > 0);
|
|
return (p - s);
|
|
}
|
|
|
|
static __inline bool
|
|
is_hi_surrogate(wchar_t wc)
|
|
{
|
|
|
|
return (wc >= 0xD800 && wc <= 0xDBFF);
|
|
}
|
|
|
|
static __inline bool
|
|
is_lo_surrogate(wchar_t wc)
|
|
{
|
|
|
|
return (wc >= 0xDC00 && wc <= 0xDFFF);
|
|
}
|
|
|
|
static __inline wchar_t
|
|
surrogate_to_ucs(wchar_t hi, wchar_t lo)
|
|
{
|
|
|
|
hi -= 0xD800;
|
|
lo -= 0xDC00;
|
|
return ((hi << 10 | lo) + 0x10000);
|
|
}
|
|
|
|
static __inline void
|
|
ucs_to_surrogate(wchar_t wc, wchar_t * __restrict hi, wchar_t * __restrict lo)
|
|
{
|
|
|
|
wc -= 0x10000;
|
|
*hi = (wc >> 10) + 0xD800;
|
|
*lo = (wc & 0x3FF) + 0xDC00;
|
|
}
|
|
|
|
static __inline bool
|
|
is_basic(wchar_t wc)
|
|
{
|
|
|
|
return ((uint32_t)wc <= 0x9F && wc != 0x24 && wc != 0x40 &&
|
|
wc != 0x60);
|
|
}
|
|
|
|
static int
|
|
_citrus_UES_mbrtowc_priv(_UESEncodingInfo * __restrict ei,
|
|
wchar_t * __restrict pwc, char ** __restrict s, size_t n,
|
|
_UESState * __restrict psenc, size_t * __restrict nresult)
|
|
{
|
|
char *s0;
|
|
int ch, head, num, tail;
|
|
wchar_t hi, wc;
|
|
|
|
if (*s == NULL) {
|
|
_citrus_UES_init_state(ei, psenc);
|
|
*nresult = 0;
|
|
return (0);
|
|
}
|
|
s0 = *s;
|
|
|
|
hi = (wchar_t)0;
|
|
tail = 0;
|
|
|
|
surrogate:
|
|
wc = (wchar_t)0;
|
|
head = tail;
|
|
if (psenc->chlen == head) {
|
|
if (n-- < 1)
|
|
goto restart;
|
|
psenc->ch[psenc->chlen++] = *s0++;
|
|
}
|
|
ch = (unsigned char)psenc->ch[head++];
|
|
if (ch == ESCAPE) {
|
|
if (psenc->chlen == head) {
|
|
if (n-- < 1)
|
|
goto restart;
|
|
psenc->ch[psenc->chlen++] = *s0++;
|
|
}
|
|
switch (psenc->ch[head]) {
|
|
case UCS2_ESC:
|
|
tail += 6;
|
|
break;
|
|
case UCS4_ESC:
|
|
if (ei->mode & MODE_C99) {
|
|
tail = 10;
|
|
break;
|
|
}
|
|
/*FALLTHROUGH*/
|
|
default:
|
|
tail = 0;
|
|
}
|
|
++head;
|
|
}
|
|
for (; head < tail; ++head) {
|
|
if (psenc->chlen == head) {
|
|
if (n-- < 1) {
|
|
restart:
|
|
*s = s0;
|
|
*nresult = (size_t)-2;
|
|
return (0);
|
|
}
|
|
psenc->ch[psenc->chlen++] = *s0++;
|
|
}
|
|
num = to_int((int)(unsigned char)psenc->ch[head]);
|
|
if (num < 0) {
|
|
tail = 0;
|
|
break;
|
|
}
|
|
wc = (wc << 4) | num;
|
|
}
|
|
head = 0;
|
|
switch (tail) {
|
|
case 0:
|
|
break;
|
|
case 6:
|
|
if (hi != (wchar_t)0)
|
|
break;
|
|
if ((ei->mode & MODE_C99) == 0) {
|
|
if (is_hi_surrogate(wc) != 0) {
|
|
hi = wc;
|
|
goto surrogate;
|
|
}
|
|
if ((uint32_t)wc <= 0x7F /* XXX */ ||
|
|
is_lo_surrogate(wc) != 0)
|
|
break;
|
|
goto done;
|
|
}
|
|
/*FALLTHROUGH*/
|
|
case 10:
|
|
if (is_basic(wc) == 0 && (uint32_t)wc <= UCS4_MAX &&
|
|
is_hi_surrogate(wc) == 0 && is_lo_surrogate(wc) == 0)
|
|
goto done;
|
|
*nresult = (size_t)-1;
|
|
return (EILSEQ);
|
|
case 12:
|
|
if (is_lo_surrogate(wc) == 0)
|
|
break;
|
|
wc = surrogate_to_ucs(hi, wc);
|
|
goto done;
|
|
}
|
|
ch = (unsigned char)psenc->ch[0];
|
|
head = psenc->chlen;
|
|
if (--head > 0)
|
|
memmove(&psenc->ch[0], &psenc->ch[1], head);
|
|
wc = (wchar_t)ch;
|
|
done:
|
|
psenc->chlen = head;
|
|
if (pwc != NULL)
|
|
*pwc = wc;
|
|
*nresult = (size_t)((wc == 0) ? 0 : (s0 - *s));
|
|
*s = s0;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
_citrus_UES_wcrtomb_priv(_UESEncodingInfo * __restrict ei,
|
|
char * __restrict s, size_t n, wchar_t wc,
|
|
_UESState * __restrict psenc, size_t * __restrict nresult)
|
|
{
|
|
wchar_t hi, lo;
|
|
|
|
if (psenc->chlen != 0)
|
|
return (EINVAL);
|
|
|
|
if ((ei->mode & MODE_C99) ? is_basic(wc) : (uint32_t)wc <= 0x7F) {
|
|
if (n-- < 1)
|
|
goto e2big;
|
|
psenc->ch[psenc->chlen++] = (char)wc;
|
|
} else if ((uint32_t)wc <= BMP_MAX) {
|
|
if (n < 6)
|
|
goto e2big;
|
|
psenc->chlen = to_str(&psenc->ch[0], wc, UCS2_BIT);
|
|
} else if ((ei->mode & MODE_C99) == 0 && (uint32_t)wc <= UCS2_MAX) {
|
|
if (n < 12)
|
|
goto e2big;
|
|
ucs_to_surrogate(wc, &hi, &lo);
|
|
psenc->chlen += to_str(&psenc->ch[0], hi, UCS2_BIT);
|
|
psenc->chlen += to_str(&psenc->ch[6], lo, UCS2_BIT);
|
|
} else if ((ei->mode & MODE_C99) && (uint32_t)wc <= UCS4_MAX) {
|
|
if (n < 10)
|
|
goto e2big;
|
|
psenc->chlen = to_str(&psenc->ch[0], wc, UCS4_BIT);
|
|
} else {
|
|
*nresult = (size_t)-1;
|
|
return (EILSEQ);
|
|
}
|
|
memcpy(s, psenc->ch, psenc->chlen);
|
|
*nresult = psenc->chlen;
|
|
psenc->chlen = 0;
|
|
|
|
return (0);
|
|
|
|
e2big:
|
|
*nresult = (size_t)-1;
|
|
return (E2BIG);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
static int
|
|
_citrus_UES_stdenc_wctocs(_UESEncodingInfo * __restrict ei __unused,
|
|
_csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
|
|
{
|
|
|
|
*csid = 0;
|
|
*idx = (_index_t)wc;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline int
|
|
/*ARGSUSED*/
|
|
_citrus_UES_stdenc_cstowc(_UESEncodingInfo * __restrict ei __unused,
|
|
wchar_t * __restrict wc, _csid_t csid, _index_t idx)
|
|
{
|
|
|
|
if (csid != 0)
|
|
return (EILSEQ);
|
|
*wc = (wchar_t)idx;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline int
|
|
/*ARGSUSED*/
|
|
_citrus_UES_stdenc_get_state_desc_generic(_UESEncodingInfo * __restrict ei __unused,
|
|
_UESState * __restrict psenc, int * __restrict rstate)
|
|
{
|
|
|
|
*rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
|
|
_STDENC_SDGEN_INCOMPLETE_CHAR;
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
/*ARGSUSED*/
|
|
_citrus_UES_encoding_module_uninit(_UESEncodingInfo *ei __unused)
|
|
{
|
|
|
|
/* ei seems to be unused */
|
|
}
|
|
|
|
static int
|
|
/*ARGSUSED*/
|
|
_citrus_UES_encoding_module_init(_UESEncodingInfo * __restrict ei,
|
|
const void * __restrict var, size_t lenvar)
|
|
{
|
|
const char *p;
|
|
|
|
p = var;
|
|
memset((void *)ei, 0, sizeof(*ei));
|
|
while (lenvar > 0) {
|
|
switch (_bcs_toupper(*p)) {
|
|
case 'C':
|
|
MATCH(C99, ei->mode |= MODE_C99);
|
|
break;
|
|
}
|
|
++p;
|
|
--lenvar;
|
|
}
|
|
ei->mb_cur_max = (ei->mode & MODE_C99) ? 10 : 12;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------
|
|
* public interface for stdenc
|
|
*/
|
|
|
|
_CITRUS_STDENC_DECLS(UES);
|
|
_CITRUS_STDENC_DEF_OPS(UES);
|
|
|
|
#include "citrus_stdenc_template.h"
|