diff options
Diffstat (limited to 'REORG.TODO/iconvdata/iso-2022-kr.c')
| -rw-r--r-- | REORG.TODO/iconvdata/iso-2022-kr.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/REORG.TODO/iconvdata/iso-2022-kr.c b/REORG.TODO/iconvdata/iso-2022-kr.c new file mode 100644 index 0000000000..1d393d747d --- /dev/null +++ b/REORG.TODO/iconvdata/iso-2022-kr.c @@ -0,0 +1,270 @@ +/* Conversion module for ISO-2022-KR. + Copyright (C) 1998-2017 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 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 + <http://www.gnu.org/licenses/>. */ + +#include <dlfcn.h> +#include <gconv.h> +#include <stdint.h> +#include <string.h> +#include "ksc5601.h" + +#include <assert.h> + +/* This makes obvious what everybody knows: 0x1b is the Esc character. */ +#define ESC 0x1b + +/* The shift sequences for this charset (it does not use ESC). */ +#define SI 0x0f +#define SO 0x0e + +/* Definitions used in the body of the `gconv' function. */ +#define CHARSET_NAME "ISO-2022-KR//" +#define DEFINE_INIT 1 +#define DEFINE_FINI 1 +#define FROM_LOOP from_iso2022kr_loop +#define TO_LOOP to_iso2022kr_loop +#define MIN_NEEDED_FROM 1 +#define MAX_NEEDED_FROM 4 +#define MIN_NEEDED_TO 4 +#define MAX_NEEDED_TO 4 +#define ONE_DIRECTION 0 +#define PREPARE_LOOP \ + int save_set; \ + int *setp = &data->__statep->__count; \ + if (!FROM_DIRECTION && !data->__internal_use \ + && data->__invocation_counter == 0) \ + { \ + /* Emit the designator sequence. */ \ + if (outbuf + 4 > outend) \ + return __GCONV_FULL_OUTPUT; \ + \ + *outbuf++ = ESC; \ + *outbuf++ = '$'; \ + *outbuf++ = ')'; \ + *outbuf++ = 'C'; \ + } +#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, + KSC5601_set = 8 +}; + + +/* 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 &= 7; \ + data->__statep->__count |= ASCII_set; \ + } \ + else \ + { \ + /* We are not in the initial state. To switch back we have \ + to emit `SI'. */ \ + if (__glibc_unlikely (outbuf == outend)) \ + /* We don't have enough room in the output buffer. */ \ + status = __GCONV_FULL_OUTPUT; \ + else \ + { \ + /* Write out the shift sequence. */ \ + *outbuf++ = SI; \ + 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-KR 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 (__glibc_unlikely (ch > 0x7f)) \ + STANDARD_FROM_LOOP_ERR_HANDLER (1); \ + \ + /* Recognize escape sequences. */ \ + if (__builtin_expect (ch, 0) == ESC) \ + { \ + /* We don't really have to handle escape sequences since all the \ + switching is done using the SI and SO bytes. But we have to \ + recognize `Esc $ ) C' since this is a kind of flag for this \ + encoding. We simply ignore it. */ \ + if (__builtin_expect (inptr + 2 > inend, 0) \ + || (inptr[1] == '$' \ + && (__builtin_expect (inptr + 3 > inend, 0) \ + || (inptr[2] == ')' \ + && __builtin_expect (inptr + 4 > inend, 0))))) \ + { \ + result = __GCONV_INCOMPLETE_INPUT; \ + break; \ + } \ + if (inptr[1] == '$' && inptr[2] == ')' && inptr[3] == 'C') \ + { \ + /* Yeah, yeah, we know this is ISO 2022-KR. */ \ + inptr += 4; \ + continue; \ + } \ + } \ + else if (__builtin_expect (ch, 0) == SO) \ + { \ + /* Switch to use KSC. */ \ + ++inptr; \ + set = KSC5601_set; \ + continue; \ + } \ + else if (__builtin_expect (ch, 0) == SI) \ + { \ + /* Switch to use ASCII. */ \ + ++inptr; \ + set = ASCII_set; \ + continue; \ + } \ + \ + if (set == ASCII_set) \ + { \ + /* Almost done, just advance the input pointer. */ \ + ++inptr; \ + } \ + 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 , int *setp +#define INIT_PARAMS int set = *setp +#define UPDATE_PARAMS *setp = set +#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 = get32 (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 (__glibc_unlikely (outptr == outend)) \ + { \ + result = __GCONV_FULL_OUTPUT; \ + break; \ + } \ + } \ + \ + *outptr++ = ch; \ + } \ + else \ + { \ + unsigned char buf[2]; \ + /* Fake initialization to keep gcc quiet. */ \ + asm ("" : "=m" (buf)); \ + \ + size_t written = ucs4_to_ksc5601 (ch, buf, 2); \ + if (__builtin_expect (written, 0) == __UNKNOWN_10646_CHAR) \ + { \ + UNICODE_TAG_HANDLER (ch, 4); \ + \ + /* Illegal character. */ \ + STANDARD_TO_LOOP_ERR_HANDLER (4); \ + } \ + else \ + { \ + assert (written == 2); \ + \ + /* We use KSC 5601. */ \ + if (set != KSC5601_set) \ + { \ + *outptr++ = SO; \ + set = KSC5601_set; \ + } \ + \ + if (__glibc_unlikely (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 LOOP_NEED_FLAGS +#define EXTRA_LOOP_DECLS , int *setp +#define INIT_PARAMS int set = *setp +#define REINIT_PARAMS set = *setp +#define UPDATE_PARAMS *setp = set +#include <iconv/loop.c> + + +/* Now define the toplevel functions. */ +#include <iconv/skeleton.c> |