diff options
Diffstat (limited to 'iconvdata/euckr.c')
| -rw-r--r-- | iconvdata/euckr.c | 377 |
1 files changed, 122 insertions, 255 deletions
diff --git a/iconvdata/euckr.c b/iconvdata/euckr.c index 2ad9478729..50e4b40838 100644 --- a/iconvdata/euckr.c +++ b/iconvdata/euckr.c @@ -1,7 +1,8 @@ /* Mapping tables for EUC-KR handling. Copyright (C) 1998 Free Software Foundation, Inc. This file is part of the GNU C Library. - Contributed by Jungshik Shin <jshin@pantheon.yale.edu>, 1998. + Contributed by Jungshik Shin <jshin@pantheon.yale.edu> + and 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 @@ -18,276 +19,142 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <gconv.h> #include <stdint.h> -#include <stdlib.h> -#include <string.h> -#include <wchar.h> #include <ksc5601.h> -/* Direction of the transformation. */ -static int to_euckr_object; -static int from_euckr_object; - static inline void -euckr_from_ucs4(wchar_t ch, unsigned char *cp) +euckr_from_ucs4 (uint32_t ch, unsigned char *cp) { if (ch > 0x7f) { - uint16_t idx=0; + uint16_t idx = 0; if (ucs4_to_ksc5601 (ch, &idx)) idx |= 0x8080; - *cp = (unsigned char) (idx/256); - *(cp+1) = (unsigned char) (idx & 0xff) ; + cp[0] = (unsigned char) (idx / 256); + cp[1] = (unsigned char) (idx & 0xff); } - /* think about 0x5c ; '\' */ + /* XXX Think about 0x5c ; '\'. */ else { - *cp = (unsigned char) (0x7f & ch) ; - *(cp+1) = (unsigned char) 0; + cp[0] = (unsigned char) ch; + cp[1] = '\0'; } } -int -gconv_init (struct gconv_step *step) -{ - /* Determine which direction. */ - if (strcasestr (step->from_name, "EUC-KR") != NULL) - step->data = &from_euckr_object; - else if (strcasestr (step->to_name, "EUC-KR") != NULL) - step->data = &to_euckr_object; - else - return GCONV_NOCONV; - - return GCONV_OK; -} - - -void -gconv_end (struct gconv_step *data) -{ - /* Nothing to do. */ -} - - -int -gconv (struct gconv_step *step, struct gconv_step_data *data, - const char *inbuf, size_t *inbufsize, size_t *written, int do_flush) -{ - struct gconv_step *next_step = step + 1; - struct gconv_step_data *next_data = data + 1; - gconv_fct fct = next_step->fct; - size_t do_write; - int result; - - /* If the function is called with no input this means we have to reset - to the initial state. The possibly partly converted input is - dropped. */ - if (do_flush) - { - do_write = 0; - - /* Call the steps down the chain if there are any. */ - if (data->is_last) - result = GCONV_OK; - else - { - struct gconv_step *next_step = step + 1; - struct gconv_step_data *next_data = data + 1; - - result = (*fct) (next_step, next_data, NULL, 0, written, 1); - - /* Clear output buffer. */ - data->outbufavail = 0; - } - } - else - { - do_write = 0; - - do - { - result = GCONV_OK; - - if (step->data == &from_euckr_object) - { - size_t inchars = *inbufsize; - size_t outwchars = data->outbufavail; - char *outbuf = data->outbuf; - size_t cnt = 0; - - while (cnt < inchars - && (outwchars + sizeof (wchar_t) <= data->outbufsize)) - { - int inchar = (unsigned char) inbuf[cnt]; - wchar_t ch; - - /* - half-width Korean Currency WON sign - - if (inchar == 0x5c) - ch = 0x20a9; - else if (inchar <= 0x7f) - ch = (wchar_t) inchar; - */ - - if (inchar <= 0x7f) - ch = (wchar_t) inchar; - - -/* 0xfe(->0x7e : row 94) and 0xc9(->0x59 : row 41) are user-defined areas */ - - else if ( inchar <= 0xa0 || inchar > 0xfe || inchar == 0xc9) - /* This is illegal. */ - ch = L'\0'; - else - { - /* Two-byte character. First test whether the next - character is also available. */ - int inchar2; - - if (cnt + 1 >= inchars) - { - /* The second character is not available. Store - the intermediate result. */ - result = GCONV_INCOMPLETE_INPUT; - break; - } - - inchar2 = (unsigned char) inbuf[++cnt]; - - ch = ksc5601_to_ucs4 ((uint16_t) (inchar * 256 + inchar2) - & 0x7f7f); - if (ch == UNKNOWN_10646_CHAR) - ch = L'\0'; - - if (ch == L'\0') - --cnt; - } - - if (ch == L'\0' && inbuf[cnt] != '\0') - { - /* This is an illegal character. */ - result = GCONV_ILLEGAL_INPUT; - break; - } - - *((wchar_t *) (outbuf + outwchars)) = ch; - ++do_write; - outwchars += sizeof (wchar_t); - ++cnt; - } - *inbufsize -= cnt; - inbuf += cnt; - data->outbufavail = outwchars; - } - else - { - size_t inwchars = *inbufsize; - size_t outchars = data->outbufavail; - char *outbuf = data->outbuf; - size_t cnt = 0; - int extra = 0; - - while (inwchars >= cnt + sizeof (wchar_t) - && outchars < data->outbufsize) - { - wchar_t ch = *((wchar_t *) (inbuf + cnt)); - unsigned char cp[2]; - -/* decomposing Hangul syllables not available in KS C 5601 into Jamos - should be considered either here or in euckr_from_ucs4() */ - - euckr_from_ucs4(ch,cp) ; - - if (cp[0] == '\0' && ch != 0) - /* Illegal character. */ - break; - - outbuf[outchars] = cp[0]; - /* Now test for a possible second byte and write this - if possible. */ - if (cp[1] != '\0') - { - if (outchars + 1 >= data->outbufsize) - { - /* The result does not fit into the buffer. */ - extra = 1; - break; - } - outbuf[++outchars] = cp[1]; - } - - ++do_write; - ++outchars; - cnt += sizeof (wchar_t); - } - *inbufsize -= cnt; - inbuf += cnt; - data->outbufavail = outchars; - - if (outchars + extra < data->outbufsize) - { - /* If there is still room in the output buffer something - is wrong with the input. */ - if (inwchars >= cnt + sizeof (wchar_t)) - { - /* An error occurred. */ - result = GCONV_ILLEGAL_INPUT; - break; - } - if (inwchars != cnt) - { - /* There are some unprocessed bytes at the end of the - input buffer. */ - result = GCONV_INCOMPLETE_INPUT; - break; - } - } - } - - if (result != GCONV_OK) - break; - - if (data->is_last) - { - /* This is the last step. */ - result = (*inbufsize > (step->data == &from_euckr_object - ? 0 : sizeof (wchar_t) - 1) - ? GCONV_FULL_OUTPUT : GCONV_EMPTY_INPUT); - break; - } - - /* Status so far. */ - result = GCONV_EMPTY_INPUT; - - if (data->outbufavail > 0) - { - /* Call the functions below in the chain. */ - size_t newavail = data->outbufavail; - - result = (*fct) (next_step, next_data, data->outbuf, &newavail, - written, 0); - - /* Correct the output buffer. */ - if (newavail != data->outbufavail && newavail > 0) - { - memmove (data->outbuf, - &data->outbuf[data->outbufavail - newavail], - newavail); - data->outbufavail = newavail; - } - } - } - while (*inbufsize > 0 && result == GCONV_EMPTY_INPUT); - } - - if (written != NULL && data->is_last) - *written = do_write; - - return result; -} +/* Definitions used in the body of the `gconv' function. */ +#define CHARSET_NAME "EUC-KR" +#define FROM_LOOP from_euc_kr +#define TO_LOOP to_euc_kr +#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 EUC-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; \ + \ + /* Half-width Korean Currency WON sign \ + \ + if (inchar == 0x5c) \ + ch = 0x20a9; \ + else if (inchar <= 0x7f) \ + ch = (wchar_t) inchar; \ + */ \ + \ + if (ch <= 0x7f) \ + /* Plain ASCII. */ \ + ++inptr; \ + /* 0xfe(->0x7e : row 94) and 0xc9(->0x59 : row 41) are \ + user-defined areas. */ \ + else if (ch <= 0xa0 || ch > 0xfe || ch == 0xc9) \ + { \ + /* This is illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + else \ + { \ + /* Two-byte character. First test whether the next character \ + is also available. */ \ + int ch2; \ + \ + if (NEED_LENGTH_TEST && inptr + 1 >= inend) \ + { \ + /* The second character is not available. */ \ + result = GCONV_INCOMPLETE_INPUT; \ + break; \ + } \ + \ + ch2 = inptr[1]; \ + \ + if (ch2 < 0xa1 || ch2 >= 0xfe \ + || ((ch = ksc5601_to_ucs4 ((uint16_t) (ch * 256 + ch2) & 0x7f7f)) \ + == UNKNOWN_10646_CHAR)) \ + { \ + /* This is an illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + inptr += 2; \ + } \ + \ + *((uint32_t *) outptr)++ = ch; \ + } +#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 = *((uint32_t *) inptr); \ + unsigned char cp[2]; \ + \ + /* Decomposing Hangul syllables not available in KS C 5601 into \ + Jamos should be considered either here or in euckr_from_ucs4() */ \ + euckr_from_ucs4 (ch, cp) ; \ + \ + if (cp[0] == '\0' && ch != 0) \ + { \ + /* Illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + *outptr++ = cp[0]; \ + /* Now test for a possible second byte and write this if possible. */ \ + if (cp[1] != '\0') \ + { \ + if (NEED_LENGTH_TEST && outptr >= outend) \ + { \ + /* The result does not fit into the buffer. */ \ + --outptr; \ + result = GCONV_FULL_OUTPUT; \ + break; \ + } \ + *outptr++ = cp[1]; \ + } \ + \ + inptr += 4; \ + } +#include <iconv/loop.c> + + +/* Now define the toplevel functions. */ +#include <iconv/skeleton.c> |