diff options
Diffstat (limited to 'iconvdata/sjis.c')
| -rw-r--r-- | iconvdata/sjis.c | 407 |
1 files changed, 144 insertions, 263 deletions
diff --git a/iconvdata/sjis.c b/iconvdata/sjis.c index 33dc2f1d65..d65b905b32 100644 --- a/iconvdata/sjis.c +++ b/iconvdata/sjis.c @@ -18,12 +18,10 @@ 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> -static const wchar_t halfkana_to_ucs4[] = +static const uint32_t halfkana_to_ucs4[] = { 0xff61, 0xff62, 0xff63, 0xff64, 0xff65, 0xff66, 0xff67, 0xff68, 0xff69, 0xff6a, 0xff6b, 0xff6c, 0xff6d, 0xff6e, 0xff6f, 0xff70, @@ -3981,268 +3979,151 @@ static const char from_ucs4_cjk[32657][2] = }; -/* Direction of the transformation. */ -static int to_sjis_object; -static int from_sjis_object; +/* Definitions used in the body of the `gconv' function. */ +#define CHARSET_NAME "SJIS" +#define FROM_LOOP from_sjis +#define TO_LOOP to_sjis +#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 SJIS 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; \ + \ + if (ch == 0x5c) \ + { \ + ch = 0xa5; \ + ++inptr; \ + } \ + else if (ch == 0x7e) \ + { \ + ch = 0x203e; \ + ++inptr; \ + } \ + else if (ch < 0x7e) \ + ++inptr; \ + else if (ch >= 0xa1 && ch <= 0xdf) \ + { \ + ch = halfkana_to_ucs4[ch - 0xa1]; \ + ++inptr; \ + } \ + else if (ch > 0xea || ch == 0xa0 || ch == 0x7f || ch == 0x80) \ + { \ + /* These are illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + else \ + { \ + /* Two-byte character. First test whether the next character \ + is also available. */ \ + uint32_t ch2; \ + uint_fast32_t idx; \ + \ + 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]; \ + idx = ch * 256 + ch2; \ + if (idx < 0x8140 || (idx > 0x84be && idx < 0x889f) \ + || (idx > 0x89fc && idx < 0x9040) \ + || (idx > 0x9ffc && idx < 0xe040) || idx > 0xeaa4) \ + { \ + /* This is illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + else \ + { \ + /* We could pack the data a bit more dense. The second \ + byte will never be 0x7f and it will also be never \ + >0xfc. But this would mean yet more `if's. */ \ + if (idx <= 0x84be) \ + ch = cjk_block1[(ch - 0x81) * 192 + ch2 - 0x40]; \ + else if (idx <= 0x89fc) \ + ch = cjk_block2[(ch - 0x88) * 192 + ch2 - 0x9f]; \ + else if (idx <= 0x9ffc) \ + ch = cjk_block3[(ch - 0x90) * 192 + ch2 - 0x40]; \ + else \ + ch = cjk_block4[(ch - 0xe0) * 192 + ch2 - 0x40]; \ + } \ + \ + if (ch == 0) \ + { \ + /* This is an illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + } \ + \ + *((uint32_t *) outptr)++ = ch; \ + } +#include <iconv/loop.c> -int -gconv_init (struct gconv_step *step) -{ - /* Determine which direction. */ - if (strcasestr (step->from_name, "SJIS") != NULL) - step->data = &from_sjis_object; - else if (strcasestr (step->to_name, "SJIS") != NULL) - step->data = &to_sjis_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 - { - 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_sjis_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 = inbuf[cnt]; - wchar_t ch; - - if (inchar == 0x5c) - ch = L'\xa5'; - else if (inchar == 0x7e) - ch = 0x203e; - else if (inchar < 0x7e) - ch = (wchar_t) inchar; - else if (inchar >= 0xa1 && inchar <= 0xdf) - ch = halfkana_to_ucs4[inchar - 0xa1]; - else if (inchar > 0xea || inchar == 0xa0 || inchar == 0x7f - || inchar == 0x80) - /* These are illegal. */ - ch = L'\0'; - else - { - /* Two-byte character. First test whether the next - character is also available. */ - int inchar2; - int idx; - - if (cnt + 1 >= inchars) - { - /* The second character is not available. Store - the intermediate result. */ - result = GCONV_INCOMPLETE_INPUT; - break; - } - - inchar2 = inbuf[++cnt]; - idx = inchar * 256 + inchar2; - if (idx < 0x8140 || (idx > 0x84be && idx < 0x889f) - || (idx > 0x89fc && idx < 0x9040) - || (idx > 0x9ffc && idx < 0xe040) || idx > 0xeaa4) - /* This is illegal. */ - ch = L'\0'; - else - { - /* We could pack the data a bit more dense. - The second byte will never be 0x7f and it - will also be never >0xfc. But this would - mean yet more `if's. */ - if (idx <= 0x84be) - ch = cjk_block1[(inchar - 0x81) * 192 - + inchar2 - 0x40]; - else if (idx <= 0x89fc) - ch = cjk_block2[(inchar - 0x88) * 192 - + inchar2 - 0x9f]; - else if (idx <= 0x9ffc) - ch = cjk_block3[(inchar - 0x90) * 192 - + inchar2 - 0x40]; - else - ch = cjk_block4[(inchar - 0xe0) * 192 - + inchar2 - 0x40]; - } - - 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) - { - int ch = *((wchar_t *) (inbuf + cnt)); - const char *cp; - - if (ch >= (sizeof (from_ucs4_lat1) - / sizeof (from_ucs4_lat1[0]))) - { - if (ch >= 0x0391 && ch <= 0x0451) - cp = from_ucs4_greek[ch - 0x391]; - else if (ch >= 0x2010 && ch <= 0x9fa0) - cp = from_ucs4_cjk[ch - 0x02010]; - else - /* Illegal character. */ - break; - } - else - cp = from_ucs4_lat1[ch]; - - 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_sjis_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); - } +/* 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); \ + const char *cp; \ + \ + if (ch >= (sizeof (from_ucs4_lat1) / sizeof (from_ucs4_lat1[0]))) \ + { \ + if (ch >= 0x0391 && ch <= 0x0451) \ + cp = from_ucs4_greek[ch - 0x391]; \ + else if (ch >= 0x2010 && ch <= 0x9fa0) \ + cp = from_ucs4_cjk[ch - 0x02010]; \ + else \ + { \ + /* Illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + } \ + else \ + cp = from_ucs4_lat1[ch]; \ + \ + 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> - if (written != NULL && data->is_last) - *written = do_write; - return result; -} +/* Now define the toplevel functions. */ +#include <iconv/skeleton.c> |