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glibc/iconvdata/iso-2022-jp.c

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/* Conversion module for ISO-2022-JP and ISO-2022-JP-2.
Copyright (C) 1998-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <assert.h>
#include <dlfcn.h>
#include <gconv.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "jis0201.h"
#include "jis0208.h"
#include "jis0212.h"
#include "gb2312.h"
#include "ksc5601.h"
struct gap
{
uint16_t start;
uint16_t end;
int32_t idx;
};
#include "iso8859-7jp.h"
/* This makes obvious what everybody knows: 0x1b is the Esc character. */
#define ESC 0x1b
/* We provide our own initialization and destructor function. */
#define DEFINE_INIT 0
#define DEFINE_FINI 0
/* Definitions used in the body of the `gconv' function. */
#define FROM_LOOP from_iso2022jp_loop
#define TO_LOOP to_iso2022jp_loop
#define ONE_DIRECTION 0
#define FROM_LOOP_MIN_NEEDED_FROM 1
#define FROM_LOOP_MAX_NEEDED_FROM 4
#define FROM_LOOP_MIN_NEEDED_TO 4
#define FROM_LOOP_MAX_NEEDED_TO 4
#define TO_LOOP_MIN_NEEDED_FROM 4
#define TO_LOOP_MAX_NEEDED_FROM 4
#define TO_LOOP_MIN_NEEDED_TO 1
#define TO_LOOP_MAX_NEEDED_TO 6
#define FROM_DIRECTION (dir == from_iso2022jp)
#define PREPARE_LOOP \
enum direction dir = ((struct iso2022jp_data *) step->__data)->dir; \
enum variant var = ((struct iso2022jp_data *) step->__data)->var; \
int save_set; \
int *setp = &data->__statep->__count;
#define EXTRA_LOOP_ARGS , var, setp
/* Direction of the transformation. */
enum direction
{
illegal_dir,
to_iso2022jp,
from_iso2022jp
};
/* We handle ISO-2022-jp and ISO-2022-JP-2 here. */
enum variant
{
illegal_var,
iso2022jp,
iso2022jp2
};
struct iso2022jp_data
{
enum direction dir;
enum variant var;
};
/* The COUNT element of the state keeps track of the currently selected
character set. The possible values are: */
enum
{
ASCII_set = 0,
JISX0208_1978_set = 1 << 3,
JISX0208_1983_set = 2 << 3,
JISX0201_Roman_set = 3 << 3,
JISX0201_Kana_set = 4 << 3,
GB2312_set = 5 << 3,
KSC5601_set = 6 << 3,
JISX0212_set = 7 << 3,
CURRENT_SEL_MASK = 7 << 3
};
/* The second value stored is the designation of the G2 set. The following
values are possible: */
enum
{
UNSPECIFIED_set = 0,
ISO88591_set = 1 << 6,
ISO88597_set = 2 << 6,
CURRENT_ASSIGN_MASK = 3 << 6
};
/* The third value, only used during conversion from Unicode to ISO-2022-JP-2,
describes the language tag parsing status. The possible values are as
follows. Values >= TAG_language are temporary tag parsing states. */
enum
{
TAG_none = 0,
TAG_language = 4 << 8,
TAG_language_j = 5 << 8,
TAG_language_ja = 1 << 8,
TAG_language_k = 6 << 8,
TAG_language_ko = 2 << 8,
TAG_language_z = 7 << 8,
TAG_language_zh = 3 << 8,
CURRENT_TAG_MASK = 7 << 8
};
extern int gconv_init (struct __gconv_step *step);
int
gconv_init (struct __gconv_step *step)
{
/* Determine which direction. */
struct iso2022jp_data *new_data;
enum direction dir = illegal_dir;
enum variant var = illegal_var;
int result;
if (__strcasecmp (step->__from_name, "ISO-2022-JP//") == 0)
{
dir = from_iso2022jp;
var = iso2022jp;
}
else if (__strcasecmp (step->__to_name, "ISO-2022-JP//") == 0)
{
dir = to_iso2022jp;
var = iso2022jp;
}
else if (__strcasecmp (step->__from_name, "ISO-2022-JP-2//") == 0)
{
dir = from_iso2022jp;
var = iso2022jp2;
}
else if (__strcasecmp (step->__to_name, "ISO-2022-JP-2//") == 0)
{
dir = to_iso2022jp;
var = iso2022jp2;
}
result = __GCONV_NOCONV;
if (__builtin_expect (dir, from_iso2022jp) != illegal_dir)
{
new_data
= (struct iso2022jp_data *) malloc (sizeof (struct iso2022jp_data));
result = __GCONV_NOMEM;
if (new_data != NULL)
{
new_data->dir = dir;
new_data->var = var;
step->__data = new_data;
if (dir == from_iso2022jp)
{
step->__min_needed_from = FROM_LOOP_MIN_NEEDED_FROM;
step->__max_needed_from = FROM_LOOP_MAX_NEEDED_FROM;
step->__min_needed_to = FROM_LOOP_MIN_NEEDED_TO;
step->__max_needed_to = FROM_LOOP_MAX_NEEDED_TO;
}
else
{
step->__min_needed_from = TO_LOOP_MIN_NEEDED_FROM;
step->__max_needed_from = TO_LOOP_MAX_NEEDED_FROM;
step->__min_needed_to = TO_LOOP_MIN_NEEDED_TO;
step->__max_needed_to = TO_LOOP_MAX_NEEDED_TO;
}
/* Yes, this is a stateful encoding. */
step->__stateful = 1;
result = __GCONV_OK;
}
}
return result;
}
extern void gconv_end (struct __gconv_step *data);
void
gconv_end (struct __gconv_step *data)
{
free (data->__data);
}
/* Since this is a stateful encoding we have to provide code which resets
the output state to the initial state. This has to be done during the
flushing. */
#define EMIT_SHIFT_TO_INIT \
/* Avoid warning about unused variable 'var'. */ \
(void) var; \
\
if ((data->__statep->__count & ~7) != ASCII_set) \
{ \
if (dir == from_iso2022jp \
|| (data->__statep->__count & CURRENT_SEL_MASK) == ASCII_set) \
{ \
/* It's easy, we don't have to emit anything, we just reset the \
state for the input. Note that this also clears the G2 \
designation. */ \
data->__statep->__count &= 7; \
data->__statep->__count |= ASCII_set; \
} \
else \
{ \
/* We are not in the initial state. To switch back we have \
to emit the sequence `Esc ( B'. */ \
if (__glibc_unlikely (outbuf + 3 > outend)) \
/* We don't have enough room in the output buffer. */ \
status = __GCONV_FULL_OUTPUT; \
else \
{ \
/* Write out the shift sequence. */ \
*outbuf++ = ESC; \
*outbuf++ = '('; \
*outbuf++ = 'B'; \
/* Note that this also clears the G2 designation. */ \
data->__statep->__count &= 7; \
data->__statep->__count |= ASCII_set; \
} \
} \
}
/* Since we might have to reset input pointer we must be able to save
and restore the state. */
#define SAVE_RESET_STATE(Save) \
if (Save) \
save_set = *setp; \
else \
*setp = save_set
/* First define the conversion function from ISO-2022-JP to UCS4. */
#define MIN_NEEDED_INPUT FROM_LOOP_MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT FROM_LOOP_MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT FROM_LOOP_MIN_NEEDED_TO
#define MAX_NEEDED_OUTPUT FROM_LOOP_MAX_NEEDED_TO
#define LOOPFCT FROM_LOOP
#define BODY \
{ \
uint32_t ch = *inptr; \
\
/* Recognize escape sequences. */ \
if (__builtin_expect (ch, 0) == ESC) \
{ \
/* We now must be prepared to read two to three more \
characters. If we have a match in the first character but \
then the input buffer ends we terminate with an error since \
we must not risk missing an escape sequence just because it \
is not entirely in the current input buffer. */ \
if (__builtin_expect (inptr + 2 >= inend, 0) \
|| (var == iso2022jp2 && inptr[1] == '$' && inptr[2] == '(' \
&& __builtin_expect (inptr + 3 >= inend, 0))) \
{ \
/* Not enough input available. */ \
result = __GCONV_INCOMPLETE_INPUT; \
break; \
} \
\
if (inptr[1] == '(') \
{ \
if (inptr[2] == 'B') \
{ \
/* ASCII selected. */ \
set = ASCII_set; \
inptr += 3; \
continue; \
} \
else if (inptr[2] == 'J') \
{ \
/* JIS X 0201 selected. */ \
set = JISX0201_Roman_set; \
inptr += 3; \
continue; \
} \
else if (var == iso2022jp2 && inptr[2] == 'I') \
{ \
/* JIS X 0201 selected. */ \
set = JISX0201_Kana_set; \
inptr += 3; \
continue; \
} \
} \
else if (inptr[1] == '$') \
{ \
if (inptr[2] == '@') \
{ \
/* JIS X 0208-1978 selected. */ \
set = JISX0208_1978_set; \
inptr += 3; \
continue; \
} \
else if (inptr[2] == 'B') \
{ \
/* JIS X 0208-1983 selected. */ \
set = JISX0208_1983_set; \
inptr += 3; \
continue; \
} \
else if (var == iso2022jp2) \
{ \
if (inptr[2] == 'A') \
{ \
/* GB 2312-1980 selected. */ \
set = GB2312_set; \
inptr += 3; \
continue; \
} \
else if (inptr[2] == '(') \
{ \
if (inptr[3] == 'C') \
{ \
/* KSC 5601-1987 selected. */ \
set = KSC5601_set; \
inptr += 4; \
continue; \
} \
else if (inptr[3] == 'D') \
{ \
/* JIS X 0212-1990 selected. */ \
set = JISX0212_set; \
inptr += 4; \
continue; \
} \
} \
} \
} \
else if (var == iso2022jp2 && inptr[1] == '.') \
{ \
if (inptr[2] == 'A') \
{ \
/* ISO 8859-1-GR selected. */ \
set2 = ISO88591_set; \
inptr += 3; \
continue; \
} \
else if (inptr[2] == 'F') \
{ \
/* ISO 8859-7-GR selected. */ \
set2 = ISO88597_set; \
inptr += 3; \
continue; \
} \
} \
} \
\
if (ch == ESC && var == iso2022jp2 && inptr[1] == 'N') \
{ \
if (set2 == ISO88591_set) \
{ \
ch = inptr[2] | 0x80; \
inptr += 3; \
} \
else if (__builtin_expect (set2, ISO88597_set) == ISO88597_set) \
{ \
/* We use the table from the ISO 8859-7 module. */ \
if (inptr[2] < 0x20 || inptr[2] >= 0x80) \
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
ch = iso88597_to_ucs4[inptr[2] - 0x20]; \
if (ch == 0) \
STANDARD_FROM_LOOP_ERR_HANDLER (3); \
inptr += 3; \
} \
else \
{ \
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
} \
} \
else if (ch >= 0x80) \
{ \
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
} \
else if (set == ASCII_set || (ch < 0x21 || ch == 0x7f)) \
/* Almost done, just advance the input pointer. */ \
++inptr; \
else if (set == JISX0201_Roman_set) \
{ \
/* Use the JIS X 0201 table. */ \
ch = jisx0201_to_ucs4 (ch); \
if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
++inptr; \
} \
else if (set == JISX0201_Kana_set) \
{ \
/* Use the JIS X 0201 table. */ \
ch = jisx0201_to_ucs4 (ch + 0x80); \
if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
++inptr; \
} \
else \
{ \
if (set == JISX0208_1978_set || set == JISX0208_1983_set) \
/* XXX I don't have the tables for these two old variants of \
JIS X 0208. Therefore I'm using the tables for JIS X \
0208-1990. If somebody has problems with this please \
provide the appropriate tables. */ \
ch = jisx0208_to_ucs4 (&inptr, inend - inptr, 0); \
else if (set == JISX0212_set) \
/* Use the JIS X 0212 table. */ \
ch = jisx0212_to_ucs4 (&inptr, inend - inptr, 0); \
else if (set == GB2312_set) \
/* Use the GB 2312 table. */ \
ch = gb2312_to_ucs4 (&inptr, inend - inptr, 0); \
else \
{ \
assert (set == KSC5601_set); \
\
/* Use the KSC 5601 table. */ \
ch = ksc5601_to_ucs4 (&inptr, inend - inptr, 0); \
} \
\
if (__glibc_unlikely (ch == 0)) \
{ \
result = __GCONV_INCOMPLETE_INPUT; \
break; \
} \
else if (__glibc_unlikely (ch == __UNKNOWN_10646_CHAR)) \
{ \
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
} \
} \
\
put32 (outptr, ch); \
outptr += 4; \
}
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS , enum variant var, int *setp
#define INIT_PARAMS int set = *setp & CURRENT_SEL_MASK; \
int set2 = *setp & CURRENT_ASSIGN_MASK
#define UPDATE_PARAMS *setp = set | set2
#include <iconv/loop.c>
/* Next, define the other direction. */
enum conversion { none = 0, european, japanese, chinese, korean, other };
/* A datatype for conversion lists. */
typedef unsigned int cvlist_t;
#define CVLIST(cv1, cv2, cv3, cv4, cv5) \
((cv1) + ((cv2) << 3) + ((cv3) << 6) + ((cv4) << 9) + ((cv5) << 12))
#define CVLIST_FIRST(cvl) ((cvl) & ((1 << 3) - 1))
#define CVLIST_REST(cvl) ((cvl) >> 3)
static const cvlist_t conversion_lists[4] =
{
/* TAG_none */ CVLIST (japanese, european, chinese, korean, other),
/* TAG_language_ja */ CVLIST (japanese, european, chinese, korean, other),
/* TAG_language_ko */ CVLIST (korean, european, japanese, chinese, other),
/* TAG_language_zh */ CVLIST (chinese, european, japanese, korean, other)
};
#define MIN_NEEDED_INPUT TO_LOOP_MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT TO_LOOP_MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT TO_LOOP_MIN_NEEDED_TO
#define MAX_NEEDED_OUTPUT TO_LOOP_MAX_NEEDED_TO
#define LOOPFCT TO_LOOP
#define BODY \
{ \
uint32_t ch; \
size_t written; \
\
ch = get32 (inptr); \
\
if (var == iso2022jp2) \
{ \
/* Handle Unicode tag characters (range U+E0000..U+E007F). */ \
if (__glibc_unlikely ((ch >> 7) == (0xe0000 >> 7))) \
{ \
ch &= 0x7f; \
if (ch >= 'A' && ch <= 'Z') \
ch += 'a' - 'A'; \
if (ch == 0x01) \
tag = TAG_language; \
else if (ch == 'j' && tag == TAG_language) \
tag = TAG_language_j; \
else if (ch == 'a' && tag == TAG_language_j) \
tag = TAG_language_ja; \
else if (ch == 'k' && tag == TAG_language) \
tag = TAG_language_k; \
else if (ch == 'o' && tag == TAG_language_k) \
tag = TAG_language_ko; \
else if (ch == 'z' && tag == TAG_language) \
tag = TAG_language_z; \
else if (ch == 'h' && tag == TAG_language_z) \
tag = TAG_language_zh; \
else if (ch == 0x7f) \
tag = TAG_none; \
else \
{ \
/* Other tag characters reset the tag parsing state (if the \
current state is a temporary state) or are ignored (if \
the current state is a stable one). */ \
if (tag >= TAG_language) \
tag = TAG_none; \
} \
\
inptr += 4; \
continue; \
} \
\
/* Non-tag characters reset the tag parsing state, if the current \
state is a temporary state. */ \
if (__glibc_unlikely (tag >= TAG_language)) \
tag = TAG_none; \
} \
\
/* First see whether we can write the character using the currently \
selected character set. But ignore the selected character set if \
the current language tag shows different preferences. */ \
if (set == ASCII_set) \
{ \
/* Please note that the NUL byte is *not* matched if we are not \
currently using the ASCII charset. This is because we must \
switch to the initial state whenever a NUL byte is written. */ \
if (ch <= 0x7f) \
{ \
*outptr++ = ch; \
written = 1; \
\
/* At the beginning of a line, G2 designation is cleared. */ \
if (var == iso2022jp2 && ch == 0x0a) \
set2 = UNSPECIFIED_set; \
} \
else \
written = __UNKNOWN_10646_CHAR; \
} \
/* ISO-2022-JP recommends to encode the newline character always in \
ASCII since this allows a context-free interpretation of the \
characters at the beginning of the next line. Otherwise it would \
have to be known whether the last line ended using ASCII or \
JIS X 0201. */ \
else if (set == JISX0201_Roman_set \
&& (__builtin_expect (tag == TAG_none, 1) \
|| tag == TAG_language_ja)) \
{ \
unsigned char buf[1]; \
written = ucs4_to_jisx0201 (ch, buf); \
if (written != __UNKNOWN_10646_CHAR) \
{ \
if (buf[0] > 0x20 && buf[0] < 0x80) \
{ \
*outptr++ = buf[0]; \
written = 1; \
} \
else \
written = __UNKNOWN_10646_CHAR; \
} \
} \
else if (set == JISX0201_Kana_set \
&& (__builtin_expect (tag == TAG_none, 1) \
|| tag == TAG_language_ja)) \
{ \
unsigned char buf[1]; \
written = ucs4_to_jisx0201 (ch, buf); \
if (written != __UNKNOWN_10646_CHAR) \
{ \
if (buf[0] > 0xa0 && buf[0] < 0xe0) \
{ \
*outptr++ = buf[0] - 0x80; \
written = 1; \
} \
else \
written = __UNKNOWN_10646_CHAR; \
} \
} \
else \
{ \
if ((set == JISX0208_1978_set || set == JISX0208_1983_set) \
&& (__builtin_expect (tag == TAG_none, 1) \
|| tag == TAG_language_ja)) \
written = ucs4_to_jisx0208 (ch, outptr, outend - outptr); \
else if (set == JISX0212_set \
&& (__builtin_expect (tag == TAG_none, 1) \
|| tag == TAG_language_ja)) \
written = ucs4_to_jisx0212 (ch, outptr, outend - outptr); \
else if (set == GB2312_set \
&& (__builtin_expect (tag == TAG_none, 1) \
|| tag == TAG_language_zh)) \
written = ucs4_to_gb2312 (ch, outptr, outend - outptr); \
else if (set == KSC5601_set \
&& (__builtin_expect (tag == TAG_none, 1) \
|| tag == TAG_language_ko)) \
written = ucs4_to_ksc5601 (ch, outptr, outend - outptr); \
else \
written = __UNKNOWN_10646_CHAR; \
\
if (__glibc_unlikely (written == 0)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
else if (written != __UNKNOWN_10646_CHAR) \
outptr += written; \
} \
\
if (written == __UNKNOWN_10646_CHAR \
&& __builtin_expect (tag == TAG_none, 1)) \
{ \
if (set2 == ISO88591_set) \
{ \
if (ch >= 0x80 && ch <= 0xff) \
{ \
if (__glibc_unlikely (outptr + 3 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
\
*outptr++ = ESC; \
*outptr++ = 'N'; \
*outptr++ = ch & 0x7f; \
written = 3; \
} \
} \
else if (set2 == ISO88597_set) \
{ \
if (__glibc_likely (ch < 0xffff)) \
{ \
const struct gap *rp = from_idx; \
\
while (ch > rp->end) \
++rp; \
if (ch >= rp->start) \
{ \
unsigned char res = \
iso88597_from_ucs4[ch - 0xa0 + rp->idx]; \
if (res != '\0') \
{ \
if (__glibc_unlikely (outptr + 3 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
\
*outptr++ = ESC; \
*outptr++ = 'N'; \
*outptr++ = res & 0x7f; \
written = 3; \
} \
} \
} \
} \
} \
\
if (written == __UNKNOWN_10646_CHAR) \
{ \
/* The attempts to use the currently selected character set \
failed, either because the language tag changed, or because \
the character requires a different character set, or because \
the character is unknown. \
The CJK character sets partially overlap when seen as subsets \
of ISO 10646; therefore there is no single correct result. \
We use a preference order which depends on the language tag. */ \
\
if (ch <= 0x7f) \
{ \
/* We must encode using ASCII. First write out the \
escape sequence. */ \
if (__glibc_unlikely (outptr + 3 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
\
*outptr++ = ESC; \
*outptr++ = '('; \
*outptr++ = 'B'; \
set = ASCII_set; \
\
if (__glibc_unlikely (outptr + 1 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ch; \
\
/* At the beginning of a line, G2 designation is cleared. */ \
if (var == iso2022jp2 && ch == 0x0a) \
set2 = UNSPECIFIED_set; \
} \
else \
{ \
/* Now it becomes difficult. We must search the other \
character sets one by one. Use an ordered conversion \
list that depends on the current language tag. */ \
cvlist_t conversion_list; \
unsigned char buf[2]; \
int res = __GCONV_ILLEGAL_INPUT; \
\
if (var == iso2022jp2) \
conversion_list = conversion_lists[tag >> 8]; \
else \
conversion_list = CVLIST (japanese, 0, 0, 0, 0); \
\
do \
switch (CVLIST_FIRST (conversion_list)) \
{ \
case european: \
\
/* Try ISO 8859-1 upper half. */ \
if (ch >= 0x80 && ch <= 0xff) \
{ \
if (set2 != ISO88591_set) \
{ \
if (__builtin_expect (outptr + 3 > outend, 0)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = '.'; \
*outptr++ = 'A'; \
set2 = ISO88591_set; \
} \
\
if (__glibc_unlikely (outptr + 3 > outend)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = 'N'; \
*outptr++ = ch - 0x80; \
res = __GCONV_OK; \
break; \
} \
\
/* Try ISO 8859-7 upper half. */ \
if (__glibc_likely (ch < 0xffff)) \
{ \
const struct gap *rp = from_idx; \
\
while (ch > rp->end) \
++rp; \
if (ch >= rp->start) \
{ \
unsigned char ch2 = \
iso88597_from_ucs4[ch - 0xa0 + rp->idx]; \
if (ch2 != '\0') \
{ \
if (set2 != ISO88597_set) \
{ \
if (__builtin_expect (outptr + 3 > outend, \
0)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = '.'; \
*outptr++ = 'F'; \
set2 = ISO88597_set; \
} \
\
if (__builtin_expect (outptr + 3 > outend, 0)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = 'N'; \
*outptr++ = ch2 - 0x80; \
res = __GCONV_OK; \
break; \
} \
} \
} \
\
break; \
\
case japanese: \
\
/* Try JIS X 0201 Roman. */ \
written = ucs4_to_jisx0201 (ch, buf); \
if (written != __UNKNOWN_10646_CHAR \
&& buf[0] > 0x20 && buf[0] < 0x80) \
{ \
if (set != JISX0201_Roman_set) \
{ \
if (__builtin_expect (outptr + 3 > outend, 0)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = '('; \
*outptr++ = 'J'; \
set = JISX0201_Roman_set; \
} \
\
if (__glibc_unlikely (outptr + 1 > outend)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = buf[0]; \
res = __GCONV_OK; \
break; \
} \
\
/* Try JIS X 0208. */ \
written = ucs4_to_jisx0208 (ch, buf, 2); \
if (written != __UNKNOWN_10646_CHAR) \
{ \
if (set != JISX0208_1983_set) \
{ \
if (__builtin_expect (outptr + 3 > outend, 0)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = '$'; \
*outptr++ = 'B'; \
set = JISX0208_1983_set; \
} \
\
if (__glibc_unlikely (outptr + 2 > outend)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = buf[0]; \
*outptr++ = buf[1]; \
res = __GCONV_OK; \
break; \
} \
\
if (__glibc_unlikely (var == iso2022jp)) \
/* Don't use the other Japanese character sets. */ \
break; \
\
/* Try JIS X 0212. */ \
written = ucs4_to_jisx0212 (ch, buf, 2); \
if (written != __UNKNOWN_10646_CHAR) \
{ \
if (set != JISX0212_set) \
{ \
if (__builtin_expect (outptr + 4 > outend, 0)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = '$'; \
*outptr++ = '('; \
*outptr++ = 'D'; \
set = JISX0212_set; \
} \
\
if (__glibc_unlikely (outptr + 2 > outend)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = buf[0]; \
*outptr++ = buf[1]; \
res = __GCONV_OK; \
break; \
} \
\
break; \
\
case chinese: \
assert (var == iso2022jp2); \
\
/* Try GB 2312. */ \
written = ucs4_to_gb2312 (ch, buf, 2); \
if (written != __UNKNOWN_10646_CHAR) \
{ \
if (set != GB2312_set) \
{ \
if (__builtin_expect (outptr + 3 > outend, 0)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = '$'; \
*outptr++ = 'A'; \
set = GB2312_set; \
} \
\
if (__glibc_unlikely (outptr + 2 > outend)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = buf[0]; \
*outptr++ = buf[1]; \
res = __GCONV_OK; \
break; \
} \
\
break; \
\
case korean: \
assert (var == iso2022jp2); \
\
/* Try KSC 5601. */ \
written = ucs4_to_ksc5601 (ch, buf, 2); \
if (written != __UNKNOWN_10646_CHAR) \
{ \
if (set != KSC5601_set) \
{ \
if (__builtin_expect (outptr + 4 > outend, 0)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = '$'; \
*outptr++ = '('; \
*outptr++ = 'C'; \
set = KSC5601_set; \
} \
\
if (__glibc_unlikely (outptr + 2 > outend)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = buf[0]; \
*outptr++ = buf[1]; \
res = __GCONV_OK; \
break; \
} \
\
break; \
\
case other: \
assert (var == iso2022jp2); \
\
/* Try JIS X 0201 Kana. This is not officially part \
of ISO-2022-JP-2, according to RFC 1554. Therefore \
we try this only after all other attempts. */ \
written = ucs4_to_jisx0201 (ch, buf); \
if (written != __UNKNOWN_10646_CHAR && buf[0] >= 0x80) \
{ \
if (set != JISX0201_Kana_set) \
{ \
if (__builtin_expect (outptr + 3 > outend, 0)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = ESC; \
*outptr++ = '('; \
*outptr++ = 'I'; \
set = JISX0201_Kana_set; \
} \
\
if (__glibc_unlikely (outptr + 1 > outend)) \
{ \
res = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = buf[0] - 0x80; \
res = __GCONV_OK; \
break; \
} \
\
break; \
\
default: \
abort (); \
} \
while (res == __GCONV_ILLEGAL_INPUT \
&& (conversion_list = CVLIST_REST (conversion_list)) != 0);\
\
if (res == __GCONV_FULL_OUTPUT) \
{ \
result = res; \
break; \
} \
\
if (res == __GCONV_ILLEGAL_INPUT) \
{ \
STANDARD_TO_LOOP_ERR_HANDLER (4); \
} \
} \
} \
\
/* Now that we wrote the output increment the input pointer. */ \
inptr += 4; \
}
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS , enum variant var, int *setp
#define INIT_PARAMS int set = *setp & CURRENT_SEL_MASK; \
int set2 = *setp & CURRENT_ASSIGN_MASK; \
int tag = *setp & CURRENT_TAG_MASK;
#define REINIT_PARAMS do \
{ \
set = *setp & CURRENT_SEL_MASK; \
set2 = *setp & CURRENT_ASSIGN_MASK; \
tag = *setp & CURRENT_TAG_MASK; \
} \
while (0)
#define UPDATE_PARAMS *setp = set | set2 | tag
#include <iconv/loop.c>
/* Now define the toplevel functions. */
#include <iconv/skeleton.c>
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