diff options
Diffstat (limited to 'iconvdata/uhc.c')
| -rw-r--r-- | iconvdata/uhc.c | 448 |
1 files changed, 162 insertions, 286 deletions
diff --git a/iconvdata/uhc.c b/iconvdata/uhc.c index ed4b7ad..f3addd4 100644 --- a/iconvdata/uhc.c +++ b/iconvdata/uhc.c @@ -18,16 +18,9 @@ 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 <wchar.h> #include <ksc5601.h> -/* Direction of the transformation. */ -static int to_uhc_object; -static int from_uhc_object; - /* egrep \ @@ -2576,20 +2569,20 @@ static const uint16_t uhc_hangul_from_ucs[11172]= 0xc64f, 0xc650, 0xc651, 0xc652 }; + static inline void -uhc_from_ucs4(wchar_t ch, unsigned char *cp) +uhc_from_ucs4 (uint32_t ch, unsigned char *cp) { if (ch >= 0x7f) { uint16_t idx=0; if (ch >= 0xac00 && ch <= 0xd7a3) - idx = uhc_hangul_from_ucs[(int) ch - 0xac00]; - else if (ch >= 0x4e00 && ch <= 0x9fa5 - || ch >= 0xf900 && ch <= 0xfa0b) + idx = uhc_hangul_from_ucs[ch - 0xac00]; + else if (ch >= 0x4e00 && ch <= 0x9fa5 || ch >= 0xf900 && ch <= 0xfa0b) { ucs4_to_ksc5601_hanja (ch,&idx); - idx |= (idx ? 0x8080 : 0); + idx |= (idx ? 0x8080 : 0); } /* Half-width Korean Currency Won Sign else if (ch == 0x20a9) @@ -2598,286 +2591,169 @@ uhc_from_ucs4(wchar_t ch, unsigned char *cp) else { ucs4_to_ksc5601_sym (ch, &idx); - idx |= (idx ? 0x8080 : 0); + idx |= (idx ? 0x8080 : 0); } - *cp = (char) (idx / 256); - *(cp + 1) = (char) (idx & 0xff) ; + cp[0] = (unsigned char) (idx / 256); + cp[1] = (unsigned char) (idx & 0xff); } - /* think about 0x5c ; '\' */ + /* XXX Think about 0x5c ; '\'. */ else { - *cp = (char) (0x7f & ch) ; - *(cp + 1) = (char) 0; + cp[0] = (unsigned char) ch; + cp[1] = (unsigned char) 0; } } -int -gconv_init (struct gconv_step *step) -{ - /* Determine which direction. */ - if (strcasestr (step->from_name, "UHC") != NULL) - step->data = &from_uhc_object; - else if (strcasestr (step->to_name, "UHC") != NULL) - step->data = &to_uhc_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_uhc_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; - - - else if ( inchar <= 0x80 || 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]; - -/* - Additional code points not present in EUC-KR - - 1st byte 2nd byte - 0x81-0xa0 0x41-0x5a, 0x61-0x7a, 0x81-0xfe total - (32) (26) + (26) + (126) = 178 5696 - - 0xa1-0xc5 0x41-0x5a 0x61-0x7a 0x81-0xa0 - (37) (26) + (26) + (32) = 84 3108 - - 0xc6 0x41-0x52 - (1) (18) 18 - - 8822 - - - 8822(only in UHC) + 2350(both in EUC-KR and UHC) = 11,172 -*/ - - if ( inchar < 0xa1 || inchar2 < 0xa1) - if ( inchar > 0xc6 || inchar2 <0x41 || - inchar2 > 0x5a && inchar2 < 0x61 || - inchar2 > 0x7a && inchar2 < 0x81 || - inchar == 0xc6 && inchar2 > 0x52 ) - ch = L'0'; - else - { - ch = uhc_extra_to_ucs[ inchar2 - 0x41 - - ( inchar2 > 0x80 ? 12 : - ( inchar2 > 0x60 ? 6 : 0 ) ) - + ( inchar < 0xa1 ? - (inchar - 0x81) * 178 : - 5696 + (inchar - 0xa1) * 84 ) ] ; - } - - else - if ( ( ch = ksc5601_to_ucs4( - (uint16_t) (inchar * 256 + inchar2) & 0x7f7f) ) - == 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]; - - uhc_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_uhc_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 "UHC" +#define FROM_LOOP from_uhc +#define TO_LOOP to_uhc +#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 UHC 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 = (uint32_t) *inptr; \ + \ +/* half-width Korean Currency WON sign \ + \ + if (ch == 0x5c) \ + ch = 0x20a9; \ + else if (ch <= 0x7f) \ + ch = (wchar_t) ch; \ +*/ \ + if (ch <= 0x7f) \ + ++inptr; \ + else if (ch <= 0x80 || 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. */ \ + uint32_t ch2; \ + \ + if (NEED_LENGTH_TEST && inptr + 1 >= inend) \ + { \ + /* The second character is not available. Store \ + the intermediate result. */ \ + result = GCONV_INCOMPLETE_INPUT; \ + break; \ + } \ + \ + ch2 = inptr[1]; \ + \ +/* \ + Additional code points not present in EUC-KR \ + \ + 1st byte 2nd byte \ + 0x81-0xa0 0x41-0x5a, 0x61-0x7a, 0x81-0xfe total \ + (32) (26) + (26) + (126) = 178 5696 \ + \ + 0xa1-0xc5 0x41-0x5a 0x61-0x7a 0x81-0xa0 \ + (37) (26) + (26) + (32) = 84 3108 \ + \ + 0xc6 0x41-0x52 \ + (1) (18) 18 \ + \ + 8822 \ + \ + 8822(only in UHC) + 2350(both in EUC-KR and UHC) = 11,172 \ +*/ \ + \ + if (ch < 0xa1 || ch2 < 0xa1) \ + { \ + if (ch > 0xc6 || ch2 <0x41 || (ch2 > 0x5a && ch2 < 0x61) \ + || (ch2 > 0x7a && ch2 < 0x81) || (ch == 0xc6 && ch2 > 0x52)) \ + { \ + /* This is not legal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + ch = uhc_extra_to_ucs[ch2 - 0x41 \ + - (ch2 > 0x80 ? 12 : (ch2 > 0x60 ? 6 : 0)) \ + + (ch < 0xa1 \ + ? (ch - 0x81) * 178 \ + : 5696 + (ch - 0xa1) * 84)]; \ + } \ + else \ + { \ + ch = ksc5601_to_ucs4 ((ch * 256 + ch2) & 0x7f7f); \ + \ + if (ch == UNKNOWN_10646_CHAR) \ + { \ + /* Illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + } \ + \ + if (ch == 0) \ + { \ + /* 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]; \ + \ + uhc_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. */ \ + result = GCONV_FULL_OUTPUT; \ + break; \ + } \ + \ + *outptr++ = cp[1]; \ + } \ + \ + inptr += 4; \ + } +#include <iconv/loop.c> + + +/* Now define the toplevel functions. */ +#include <iconv/skeleton.c> |