/* Conversion to and from IBM939.
- Copyright (C) 2000-2002, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2000-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Masahide Washizawa <washi@yamato.ibm.co.jp>, 2000.
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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* IBM939 is designed for the representation of Japanese Latin/Kanji
+ using a stateful EBCDIC encoding scheme. It is also known as
+ CCSID 939 or CP939. See:
+ https://www-01.ibm.com/software/globalization/ccsid/ccsid939.html */
#include <dlfcn.h>
#include <stdint.h>
#define CHARSET_NAME "IBM939//"
#define FROM_LOOP from_ibm939
#define TO_LOOP to_ibm939
+#define ONE_DIRECTION 0
#define FROM_LOOP_MIN_NEEDED_FROM 1
#define FROM_LOOP_MAX_NEEDED_FROM 2
#define FROM_LOOP_MIN_NEEDED_TO 4
{ \
/* We are not in the initial state. To switch back we have \
to emit `SI'. */ \
- if (__builtin_expect (outbuf >= outend, 0)) \
+ if (__glibc_unlikely (outbuf >= outend)) \
/* We don't have enough room in the output buffer. */ \
status = __GCONV_FULL_OUTPUT; \
else \
\
if (__builtin_expect (ch, 0) == SO) \
{ \
- /* Shift OUT, change to DBCS converter. */ \
- if (curcs == db) \
- { \
- result = __GCONV_ILLEGAL_INPUT; \
- break; \
- } \
+ /* Shift OUT, change to DBCS converter (redundant escape okay). */ \
curcs = db; \
++inptr; \
continue; \
} \
else if (__builtin_expect (ch, 0) == SI) \
{ \
- /* Shift IN, change to SBCS converter. */ \
- if (curcs == sb) \
- { \
- result = __GCONV_ILLEGAL_INPUT; \
- break; \
- } \
+ /* Shift IN, change to SBCS converter (redundant escape okay). */ \
curcs = sb; \
++inptr; \
continue; \
\
assert (curcs == db); \
\
- if (__builtin_expect (inptr + 1 >= inend, 0)) \
+ if (__glibc_unlikely (inptr + 1 >= inend)) \
{ \
/* The second character is not available. Store the \
intermediate result. */ \
while (ch > rp2->end) \
++rp2; \
\
- if (__builtin_expect (rp2 == NULL, 0) \
+ if (__builtin_expect (rp2->start == 0xffff, 0) \
|| __builtin_expect (ch < rp2->start, 0) \
|| (res = __ibm939db_to_ucs4[ch + rp2->idx], \
__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
uint32_t ch = get32 (inptr); \
const struct gap *rp1 = __ucs4_to_ibm939sb_idx; \
const struct gap *rp2 = __ucs4_to_ibm939db_idx; \
- const char *cp; \
\
- if (__builtin_expect (ch >= 0xffff, 0)) \
+ if (__glibc_unlikely (ch >= 0xffff)) \
{ \
UNICODE_TAG_HANDLER (ch, 4); \
goto ibm939_invalid_char; \
++rp1; \
\
/* Use the UCS4 table for single byte. */ \
+ unsigned char sbconv; \
if (__builtin_expect (ch < rp1->start, 0) \
- || (cp = __ucs4_to_ibm939sb[ch + rp1->idx], \
- __builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \
+ || (sbconv = __ucs4_to_ibm939sb[ch + rp1->idx], \
+ __builtin_expect (sbconv, L'\1') == L'\0' && ch != '\0')) \
{ \
/* Use the UCS4 table for double byte. */ \
while (ch > rp2->end) \
++rp2; \
\
+ const char *cp; \
if (__builtin_expect (ch < rp2->start, 0) \
|| (cp = __ucs4_to_ibm939db[ch + rp2->idx], \
__builtin_expect (cp[0], L'\1')==L'\0' && ch != '\0')) \
{ \
if (curcs == sb) \
{ \
- if (__builtin_expect (outptr + 1 > outend, 0)) \
+ if (__glibc_unlikely (outptr + 1 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
curcs = db; \
} \
\
- if (__builtin_expect (outptr + 2 > outend, 0)) \
+ if (__glibc_unlikely (outptr + 2 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
{ \
if (curcs == db) \
{ \
- if (__builtin_expect (outptr + 1 > outend, 0)) \
+ if (__glibc_unlikely (outptr + 1 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = SI; \
+ curcs = sb; \
} \
\
- if (__builtin_expect (outptr + 1 > outend, 0)) \
+ if (__glibc_unlikely (outptr + 1 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
else if (ch == 0x5c) \
*outptr++ = 0xb2; \
else \
- *outptr++ = cp[0]; \
- curcs = sb; \
+ *outptr++ = sbconv; \
} \
\
/* Now that we wrote the output increment the input pointer. */ \
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS , int *curcsp
#define INIT_PARAMS int curcs = *curcsp & ~7
+#define REINIT_PARAMS curcs = *curcsp & ~7
#define UPDATE_PARAMS *curcsp = curcs
#include <iconv/loop.c>