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glibc/iconvdata/ibm943.c
Siddhesh Poyarekar 30891f35fa Remove "Contributed by" lines 
We stopped adding "Contributed by" or similar lines in sources in 2012
in favour of git logs and keeping the Contributors section of the
glibc manual up to date.  Removing these lines makes the license
header a bit more consistent across files and also removes the
possibility of error in attribution when license blocks or files are
copied across since the contributed-by lines don't actually reflect
reality in those cases.

Move all "Contributed by" and similar lines (Written by, Test by,
etc.) into a new file CONTRIBUTED-BY to retain record of these
contributions.  These contributors are also mentioned in
manual/contrib.texi, so we just maintain this additional record as a
courtesy to the earlier developers.

The following scripts were used to filter a list of files to edit in
place and to clean up the CONTRIBUTED-BY file respectively.  These
were not added to the glibc sources because they're not expected to be
of any use in future given that this is a one time task:

https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc
https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2021-09-03 22:06:44 +05:30

215 lines
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/* Conversion from and to IBM943.
Copyright (C) 2000-2021 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 <dlfcn.h>
#include <stdint.h>
#include <stdbool.h>
#include "ibm943.h"
#define FROM 0
#define TO 1
/* Definitions used in the body of the `gconv' function. */
#define CHARSET_NAME "IBM943//"
#define FROM_LOOP from_ibm943
#define TO_LOOP to_ibm943
#define ONE_DIRECTION 0
/* Definitions of initialization and destructor function. */
#define DEFINE_INIT 1
#define DEFINE_FINI 1
#define MIN_NEEDED_FROM 1
#define MAX_NEEDED_FROM 2
#define MIN_NEEDED_TO 4
/* First, define the conversion function from IBM-943 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 \
{ \
const struct gap *rp2 = __ibm943db_to_ucs4_idx; \
uint32_t ch = *inptr; \
uint32_t res; \
\
if (__builtin_expect (ch == 0x80, 0) \
|| __builtin_expect (ch == 0xa0, 0) \
|| __builtin_expect (ch == 0xfd, 0) \
|| __builtin_expect (ch == 0xfe, 0) \
|| __builtin_expect (ch == 0xff, 0)) \
{ \
/* This is an illegal character. */ \
STANDARD_FROM_LOOP_ERR_HANDLER (1); \
} \
\
/* Use the IBM943 table for single byte. */ \
if (__builtin_expect (ch > 0xdf, 0) \
|| (res = __ibm943sb_to_ucs4[ch], \
__builtin_expect (res == 0, 0) && ch != 0)) \
{ \
/* Use the IBM943 table for double byte. */ \
if (__glibc_unlikely (inptr + 1 >= inend)) \
{ \
/* The second character is not available. \
Store the intermediate result. */ \
result = __GCONV_INCOMPLETE_INPUT; \
break; \
} \
\
ch = (ch * 0x100) + inptr[1]; \
/* ch was less than 0xfd. */ \
assert (ch < 0xfd00); \
while (ch > rp2->end) \
++rp2; \
\
if (__builtin_expect (ch < rp2->start, 0) \
|| (res = __ibm943db_to_ucs4[ch + rp2->idx], \
__builtin_expect (res, '\1') == 0 && ch !=0)) \
{ \
/* This is an illegal character. */ \
STANDARD_FROM_LOOP_ERR_HANDLER (2); \
} \
else \
{ \
put32 (outptr, res); \
outptr += 4; \
inptr += 2; \
} \
} \
else \
{ \
if (res == 0xa5) \
res = 0x5c; \
else if (res == 0x203e) \
res = 0x7e; \
put32 (outptr, res); \
outptr += 4; \
inptr++; \
} \
}
#define LOOP_NEED_FLAGS
#define ONEBYTE_BODY \
{ \
if (c == 0x80 || c == 0xa0 || c >= 0xe0) \
return WEOF; \
uint32_t res = __ibm943sb_to_ucs4[c]; \
if (res == 0 && c != 0) \
return WEOF; \
if (res == 0xa5) \
res = 0x5c; \
else if (res == 0x203e) \
res = 0x7e; \
return res; \
}
#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 \
{ \
const struct gap *rp = __ucs4_to_ibm943sb_idx; \
unsigned char sc; \
uint32_t ch = get32(inptr); \
bool found = true; \
uint32_t i; \
uint32_t low; \
uint32_t high; \
uint16_t pccode; \
\
if (__glibc_unlikely (ch >= 0xffff)) \
{ \
UNICODE_TAG_HANDLER (ch, 4); \
rp = NULL; \
} \
else \
while (ch > rp->end) \
++rp; \
\
/* Use the UCS4 table for single byte. */ \
if (__builtin_expect (rp == NULL, 0) \
|| __builtin_expect (ch < rp->start, 0) \
|| (sc = __ucs4_to_ibm943sb[ch + rp->idx], \
__builtin_expect (sc, '\1') == '\0' && ch != L'\0')) \
{ \
\
/* Use the UCS4 table for double byte. */ \
found = false; \
low = 0; \
high = (sizeof (__ucs4_to_ibm943db) >> 1) \
/ sizeof (__ucs4_to_ibm943db[0][FROM]); \
pccode = ch; \
if (__glibc_likely (rp != NULL)) \
while (low < high) \
{ \
i = (low + high) >> 1; \
if (pccode < __ucs4_to_ibm943db[i][FROM]) \
high = i; \
else if (pccode > __ucs4_to_ibm943db[i][FROM]) \
low = i + 1; \
else \
{ \
pccode = __ucs4_to_ibm943db[i][TO]; \
found = true; \
break; \
} \
} \
if (found) \
{ \
if (__glibc_unlikely (outptr + 2 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = pccode >> 8 & 0xff; \
*outptr++ = pccode & 0xff; \
} \
else \
{ \
/* This is an illegal character. */ \
STANDARD_TO_LOOP_ERR_HANDLER (4); \
} \
} \
else \
{ \
if (__glibc_unlikely (outptr + 1 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
if (ch == 0x5c) \
*outptr++ = 0x5c; \
else if (ch == 0x7e) \
*outptr++ = 0x7e; \
else \
*outptr++ = sc; \
} \
\
/* Now that we wrote the output increment the input pointer. */ \
inptr += 4; \
}
#define LOOP_NEED_FLAGS
#include <iconv/loop.c>
/* Now define the toplevel functions. */
#include <iconv/skeleton.c>
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