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Update. 

* iconvdata/Makefile (modules): Add ISO-2022-CN.
	Add link rules for this module.
	(distribute): Add iso-2022-cn.c and cns11643l2.h.
	* iconvdata/cns11643l2.h: New file.
	* iconvdata/iso-2022-cn.c: New file.
	* iconvdata/gconv-modules: Add entries for ISO-2022-CN module.

	* iconvdata/cns11643l1.h (cns11643l1_to_ucs4): Make string argument
	unsigned.
	(ucs4_to_cns11643l1): Likewise.
	* iconvdata/euc-tw.c: Correct parameter passed to cns11643l1_to_ucs4.

	* iconvdata/iso-2022-kr.c: Remove unnecessary test from conversion
	loop to UCS4.
	Optimize recognition of escape sequences a bit.
This commit is contained in:
Ulrich Drepper 1999-12-29 07:32:44 +00:00
parent 6d110ca185
commit 15a2315cb4
8 changed files with 512 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
ChangeLog
View File

@ -1,7 +1,20 @@
1999-12-28 Ulrich Drepper <drepper@cygnus.com>
* iconvdata/iso-2022-kr.c: Optimize recognition of escape
sequences a bit.
* iconvdata/Makefile (modules): Add ISO-2022-CN.
Add link rules for this module.
(distribute): Add iso-2022-cn.c and cns11643l2.h.
* iconvdata/cns11643l2.h: New file.
* iconvdata/iso-2022-cn.c: New file.
* iconvdata/gconv-modules: Add entries for ISO-2022-CN module.
* iconvdata/cns11643l1.h (cns11643l1_to_ucs4): Make string argument
unsigned.
(ucs4_to_cns11643l1): Likewise.
* iconvdata/euc-tw.c: Correct parameter passed to cns11643l1_to_ucs4.
* iconvdata/iso-2022-kr.c: Remove unnecessary test from conversion
loop to UCS4.
Optimize recognition of escape sequences a bit.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove oldgetrlimit
and oldsetrlimit definitions.

7
iconvdata/Makefile
View File

@ -44,7 +44,8 @@ modules := ISO8859-1 ISO8859-2 ISO8859-3 ISO8859-4 ISO8859-5 \
GOST_19768-74 GREEK-CCITT GREEK7 GREEK7-OLD INIS INIS-8 \
INIS-CYRILLIC ISO_6937-2 ISO_2033 ISO_5427 ISO_5427-EXT \
ISO_5428 ISO_10367-BOX MAC-IS MAC-UK NATS-DANO NATS-SEFI \
SAMI-WS2 ISO-IR-197 TIS-620 KOI8-U GBK ISIRI-3342 GBGBK
SAMI-WS2 ISO-IR-197 TIS-620 KOI8-U GBK ISIRI-3342 GBGBK \
ISO-2022-CN
modules.so := $(addsuffix .so, $(modules))
@ -73,6 +74,8 @@ $(objpfx)ISO-2022-JP.so: $(objpfx)libJIS.so $(objpfx)libGB.so \
$(objpfx)libCNS.so $(objpfx)libKSC.so
LDFLAGS-ISO-2022-KR.so = -Wl,-rpath,'$$ORIGIN'
$(objpfx)ISO-2022-KR.so: $(objpfx)libKSC.so
LDFLAGS-ISO-2022-CN.so = -Wl,-rpath,'$$ORIGIN'
$(objpfx)ISO-2022-CN.so: $(objpfx)libGB.so $(objpfx)libCNS.so
LDFLAGS-libJIS.so = -Wl,-soname,$(@F)
LDFLAGS-libKSC.so = -Wl,-soname,$(@F)
@ -112,7 +115,7 @@ distribute := gconv-modules extra-module.mk gap.awk gaptab.awk \
koi8-r.c ksc5601.c ksc5601.h latin-greek.c latin-greek-1.c \
macintosh.c mac-is.c mac-uk.c nats-dano.c nats-sefi.c sjis.c \
t.61.c uhc.c sami-ws2.c iso-ir-197.c tis-620.c koi8-u.c \
isiri-3342.c gbgbk.c
isiri-3342.c gbgbk.c iso-2022-cn.c cns11643l2.h
# We build the transformation modules only when we build shared libs.
ifeq (yes,$(build-shared))

5
iconvdata/cns11643l1.h
View File

@ -26,7 +26,8 @@ extern const uint16_t __cns11643l1_to_ucs4_tab[];
static inline uint32_t
cns11643l1_to_ucs4 (const char **s, size_t avail, unsigned char offset)
cns11643l1_to_ucs4 (const unsigned char **s, size_t avail,
unsigned char offset)
{
unsigned char ch = *(*s);
unsigned char ch2;
@ -70,7 +71,7 @@ extern const char __cns11643l1_from_ucs4_tab14[][2];
static inline size_t
ucs4_to_cns11643l1 (uint32_t wch, char *s, size_t avail)
ucs4_to_cns11643l1 (uint32_t wch, unsigned char *s, size_t avail)
{
unsigned int ch = (unsigned int) wch;
char buf[2];

85
iconvdata/cns11643l2.h Normal file
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@ -0,0 +1,85 @@
/* Access functions for CNS 11643, plane 2 handling.
Copyright (C) 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <stdint.h>
#include <gconv.h>
/* Table for CNS 11643, plane 2 to UCS4 conversion. */
extern const uint16_t __cns11643l2_to_ucs4_tab[];
static inline uint32_t
cns11643l2_to_ucs4 (const unsigned char **s, size_t avail,
unsigned char offset)
{
unsigned char ch = *(*s);
unsigned char ch2;
int idx;
if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) > 0x7d)
return __UNKNOWN_10646_CHAR;
if (avail < 2)
return 0;
ch2 = (*s)[1];
if ((ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f)
return __UNKNOWN_10646_CHAR;
idx = (ch - 0x21 - offset) * 94 + (ch2 - 0x21 - offset);
if (idx > 0x1de1)
return __UNKNOWN_10646_CHAR;
(*s) += 2;
return __cns11643l2_to_ucs4_tab[idx] ?: ((*s) -= 2, __UNKNOWN_10646_CHAR);
}
/* The table which contains the CNS 11643 level 2 mappings. */
extern const char __cns11643_from_ucs4_tab[][3];
static inline size_t
ucs4_to_cns11643l2 (uint32_t wch, unsigned char *s, size_t avail)
{
unsigned int ch = (unsigned int) wch;
const char *cp = NULL;
if (ch >= 0x4e07 && ch <= 0x9fa4)
{
cp = __cns11643_from_ucs4_tab[ch - 0x4e00];
if (cp[0] == '\2')
++cp;
else
cp = NULL;
}
if (cp == NULL)
return __UNKNOWN_10646_CHAR;
if (avail < 2)
return 0;
s[0] = cp[0];
s[1] = cp[1];
return 2;
}

2
iconvdata/euc-tw.c
View File

@ -97,7 +97,7 @@
else \
{ \
/* This is code set 1: CNS 11643, plane 1. */ \
const char *endp = inptr; \
const unsigned char *endp = inptr; \
\
ch = cns11643l1_to_ucs4 (&endp, \
NEED_LENGTH_TEST ? inend - inptr : 2, \

5
iconvdata/gconv-modules
View File

@ -976,6 +976,11 @@ alias CSISO2022KR// ISO-2022-KR//
module ISO-2022-KR// INTERNAL ISO-2022-KR 1
module INTERNAL ISO-2022-KR// ISO-2022-KR 1
# from to module cost
alias CSISO2022CN// ISO-2022-CN//
module ISO-2022-CN// INTERNAL ISO-2022-CN 1
module INTERNAL ISO-2022-CN// ISO-2022-CN 1
# from to module cost
alias MAC// MACINTOSH//
alias CSMACINTOSH// MACINTOSH//

398
iconvdata/iso-2022-cn.c Normal file
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@ -0,0 +1,398 @@
/* Conversion module for ISO-2022-CN.
Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <gconv.h>
#include <stdint.h>
#include <string.h>
#include "gb2312.h"
#include "cns11643l1.h"
#include "cns11643l2.h"
#include <assert.h>
/* This makes obvious what everybody knows: 0x1b is the Esc character. */
#define ESC 0x1b
/* We have single-byte shift-in and shift-out sequences, and the single
shift sequence SS2 which replaces the SS2 designation for the next
two bytes. */
#define SI 0x0f
#define SO 0x0e
#define SS2_0 ESC
#define SS2_1 0x4e
/* Definitions used in the body of the `gconv' function. */
#define CHARSET_NAME "ISO-2022-CN//"
#define DEFINE_INIT 1
#define DEFINE_FINI 1
#define FROM_LOOP from_iso2022cn_loop
#define TO_LOOP to_iso2022cn_loop
#define MIN_NEEDED_FROM 1
#define MAX_NEEDED_FROM 4
#define MIN_NEEDED_TO 4
#define MAX_NEEDED_TO 4
#define PREPARE_LOOP \
int save_set; \
int *setp = &data->__statep->count;
#define EXTRA_LOOP_ARGS , setp
/* The COUNT element of the state keeps track of the currently selected
character set. The possible values are: */
enum
{
ASCII_set = 0,
GB2312_set,
CNS11643_1_set,
CNS11643_2_set,
CURRENT_MASK = 3,
GB2312_ann = 4,
CNS11643_1_ann = 8,
CNS11643_2_ann = 16
};
/* 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 \
if (data->__statep->count != ASCII_set) \
{ \
if (FROM_DIRECTION) \
/* It's easy, we don't have to emit anything, we just reset the \
state for the input. */ \
data->__statep->count = ASCII_set; \
else \
{ \
unsigned char *outbuf = data->__outbuf; \
\
/* We are not in the initial state. To switch back we have \
to emit `SI'. */ \
if (outbuf == data->__outbufend) \
/* We don't have enough room in the output buffer. */ \
status = __GCONV_FULL_OUTPUT; \
else \
{ \
/* Write out the shift sequence. */ \
*outbuf++ = SI; \
if (data->__is_last) \
*written += 1; \
data->__outbuf = outbuf; \
data->__statep->count = ASCII_set; \
} \
} \
}
/* Since we might have to reset input pointer we must be able to save
and retore the state. */
#define SAVE_RESET_STATE(Save) \
if (Save) \
save_set = *setp; \
else \
*setp = save_set
/* First define the conversion function from ISO-2022-CN to UCS4. */
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
#define LOOPFCT FROM_LOOP
#define BODY \
{ \
uint32_t ch = *inptr; \
\
/* This is a 7bit character set, disallow all 8bit characters. */ \
if (ch > 0x7f) \
{ \
result = __GCONV_ILLEGAL_INPUT; \
break; \
} \
\
/* Recognize escape sequences. */ \
if (ch == ESC) \
{ \
/* There are two kinds of escape sequences we have to handle: \
- those announcing the use of GB and CNS characters on the \
line; we can simply ignore them \
- the initial byte of the SS2 sequence. \
*/ \
if (NEED_LENGTH_TEST \
&& (inptr + 1 > inend \
|| (inptr[1] == '$' \
&& (inptr + 2 > inend \
|| (inptr[2] == ')' && inptr + 3 > inend) \
|| (inptr[2] == '*' && inptr + 3 > inend))) \
|| (inptr[1] == SS2_1 && inptr + 3 > inend))) \
{ \
result = __GCONV_EMPTY_INPUT; \
break; \
} \
if (inptr[1] == '$' \
&& ((inptr[2] == ')' && (inptr[3] == 'A' || inptr[3] == 'G')) \
|| (inptr[2] == '*' && inptr[3] == 'H'))) \
{ \
/* OK, we accept those character sets. */ \
if (inptr[3] == 'A') \
ann = GB2312_ann; \
else if (inptr[3] == 'G') \
ann = CNS11643_1_ann; \
inptr += 4; \
continue; \
} \
} \
else if (ch == SO) \
{ \
/* Switch to use GB2312 or CNS 11643 plane 1, depending on which \
S0 designation came last. The only problem is what to do with \
faulty input files where no designator came. \
XXX For now I'll default to use GB2312. If this is not the \
best behaviour (e.g., we should flag an error) let me know. */ \
++inptr; \
set = ann == CNS11643_1_ann ? CNS11643_1_set : GB2312_set; \
continue; \
} \
else if (ch == SI) \
{ \
/* Switch to use ASCII. */ \
++inptr; \
set = ASCII_set; \
continue; \
} \
\
if (ch == ESC && inptr[1] == SS2_1) \
{ \
/* This is a character from CNS 11643 plane 2. \
XXX We could test here whether the use of this character \
set was announced. */ \
inptr += 2; \
ch = cns11643l2_to_ucs4 (&inptr, 2, 0); \
if (ch == __UNKNOWN_10646_CHAR) \
{ \
inptr -= 2; \
result = __GCONV_ILLEGAL_INPUT; \
break; \
} \
} \
else if (set == ASCII_set) \
{ \
/* Almost done, just advance the input pointer. */ \
++inptr; \
} \
else \
{ \
/* That's pretty easy, we have a dedicated functions for this. */ \
if (set == GB2312_set) \
ch = gb2312_to_ucs4 (&inptr, \
NEED_LENGTH_TEST ? inend - inptr : 2, 0); \
else \
{ \
assert (set == CNS11643_1_set); \
ch = cns11643l1_to_ucs4 (&inptr, \
NEED_LENGTH_TEST ? inend - inptr : 2, 0);\
} \
\
if (NEED_LENGTH_TEST && ch == 0) \
{ \
result = __GCONV_EMPTY_INPUT; \
break; \
} \
else if (ch == __UNKNOWN_10646_CHAR) \
{ \
result = __GCONV_ILLEGAL_INPUT; \
break; \
} \
} \
\
*((uint32_t *) outptr)++ = ch; \
}
#define EXTRA_LOOP_DECLS , int *setp
#define INIT_PARAMS int set = *setp & CURRENT_MASK; \
int ann = *setp & ~CURRENT_MASK
#define UPDATE_PARAMS *setp = set | ann
#include <iconv/loop.c>
/* Next, define the other direction. */
#define MIN_NEEDED_INPUT MIN_NEEDED_TO
#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
#define LOOPFCT TO_LOOP
#define BODY \
{ \
uint32_t ch; \
size_t written = 0; \
\
ch = *((uint32_t *) inptr); \
\
/* First see whether we can write the character using the currently \
selected character set. */ \
if (ch < 0x80) \
{ \
if (set != ASCII_set) \
{ \
*outptr++ = SI; \
set = ASCII_set; \
if (NEED_LENGTH_TEST && outptr == outend) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
} \
\
*outptr++ = ch; \
written = 1; \
\
/* At the end of the line we have to clear the `ann' flags since \
every line must contain this information again. */ \
if (ch == L'\n') \
ann = 0; \
} \
else \
{ \
char buf[2]; \
int used; \
\
if (set == GB2312_set || (ann & CNS11643_1_ann) == 0) \
{ \
written = ucs4_to_gb2312 (ch, buf, 2); \
used = GB2312_set; \
} \
else \
{ \
written = ucs4_to_cns11643l1 (ch, buf, 2); \
used = CNS11643_1_set; \
} \
\
if (written == __UNKNOWN_10646_CHAR) \
{ \
/* Cannot convert it using the currently selected SO set. \
Next try the SS2 set. */ \
written = ucs4_to_cns11643l2 (ch, buf, 2); \
if (written != __UNKNOWN_10646_CHAR) \
/* Yep, that worked. */ \
used = CNS11643_2_set; \
else \
{ \
/* Well, see whether we have to change the SO set. */ \
if (set == GB2312_set) \
written = ucs4_to_cns11643l1 (ch, buf, 2); \
else \
written = ucs4_to_gb2312 (ch, buf, 2); \
\
if (written != __UNKNOWN_10646_CHAR) \
/* Oh well, then switch SO. */ \
used = GB2312_set + CNS11643_1_set - set; \
else \
{ \
/* Even this does not work. Error. */ \
result = __GCONV_ILLEGAL_INPUT; \
break; \
} \
} \
} \
assert (written == 2); \
\
/* See whether we have to emit an escape sequence. */ \
if (set != used) \
{ \
/* First see whether we announced that we use this \
character set. */ \
if ((ann & (2 << used)) == 0) \
{ \
const char *escseq; \
\
if (NEED_LENGTH_TEST && outptr + 4 > outend) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
\
assert (used >= 1 && used <= 3); \
escseq = "\e$)A\e$)G\e$*H" + (used - 1) * 4; \
*outptr++ = *escseq++; \
*outptr++ = *escseq++; \
*outptr++ = *escseq++; \
*outptr++ = *escseq++; \
\
if (used == GB2312_set) \
ann = (ann & CNS11643_2_ann) | GB2312_ann; \
else if (used == CNS11643_1_set) \
ann = (ann & CNS11643_2_ann) | CNS11643_1_ann; \
else \
ann |= CNS11643_2_ann; \
} \
\
if (used == CNS11643_2_set) \
{ \
if (outptr + 2 > outend) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = SS2_0; \
*outptr++ = SS2_1; \
} \
else \
{ \
/* We only have to emit something is currently ASCII is \
selected. Otherwise we are switching within the \
SO charset. */ \
if (set == ASCII_set) \
{ \
if (outptr + 1 > outend) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = SO; \
} \
} \
\
/* Always test the length here since we have used up all the \
guaranteed output buffer slots. */ \
if (outptr + 2 > outend) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
} \
else if (NEED_LENGTH_TEST && outptr + 2 > outend) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
\
*outptr++ = buf[0]; \
*outptr++ = buf[1]; \
} \
\
/* Now that we wrote the output increment the input pointer. */ \
inptr += 4; \
}
#define EXTRA_LOOP_DECLS , int *setp
#define INIT_PARAMS int set = *setp & CURRENT_MASK; \
int ann = *setp & ~CURRENT_MASK
#define UPDATE_PARAMS *setp = set | ann
#include <iconv/loop.c>
/* Now define the toplevel functions. */
#include <iconv/skeleton.c>

5
iconvdata/iso-2022-kr.c
View File

@ -166,11 +166,6 @@ enum
\
if (set == ASCII_set) \
{ \
if (ch >= 0x80) \
{ \
result = __GCONV_ILLEGAL_INPUT; \
break; \
} \
/* Almost done, just advance the input pointer. */ \
++inptr; \
} \