diff options
Diffstat (limited to 'iconvdata/big5.c')
| -rw-r--r-- | iconvdata/big5.c | 451 |
1 files changed, 171 insertions, 280 deletions
diff --git a/iconvdata/big5.c b/iconvdata/big5.c index a6a2580dd7..2962712167 100644 --- a/iconvdata/big5.c +++ b/iconvdata/big5.c @@ -8411,289 +8411,180 @@ static const char from_ucs4_tab13[][2] = }; -/* Direction of the transformation. */ -static int to_big5_object; -static int from_big5_object; +/* Definitions used in the body of the `gconv' function. */ +#define CHARSET_NAME "BIG5" +#define FROM_LOOP from_big5 +#define TO_LOOP to_big5 +#define DEFINE_INIT 1 +#define DEFINE_FINI 1 +#define MIN_NEEDED_FROM 1 +#define MAX_NEEDED_FROM 2 +#define MIN_NEEDED_TO 4 -int -gconv_init (struct gconv_step *step) -{ - /* Determine which direction. */ - if (strcasestr (step->from_name, "BIG5") != NULL) - step->data = &from_big5_object; - else if (strcasestr (step->to_name, "BIG5") != NULL) - step->data = &to_big5_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_big5_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 < '\xa1' || inchar > '\xfe') - ch = (wchar_t) inchar; - 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; - } - - idx = (inchar - 0xa1) * 157; - inchar2 = inbuf[++cnt]; - /* See whether the second byte is in the correct - range. */ - if (inchar2 >= '\x40' && inchar2 <= '\x7e') - idx += inchar2 - 0x40; - else if (inchar2 >= '\xa1' && inchar2 <= '\xfe') - idx += 0x3f + (inchar2 - 0xa1); - else - { - /* This is illegal. */ - --cnt; - result = GCONV_ILLEGAL_INPUT; - break; - } - - /* Get the value from the table. */ - ch = big5_to_ucs[idx]; - - 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)); - char buf[2]; - const char *cp; - - if (ch >= (sizeof (from_ucs4_tab1) - / sizeof (from_ucs4_tab1[0]))) - { - if (ch >= 0x2c7 && ch <= 0x2d9) - cp = from_ucs4_tab2[ch - 0x2c7]; - else if (ch >= 0x391 && ch <= 0x451) - cp = from_ucs4_tab3[ch - 0x391]; - else if (ch >= 0x2013 && ch <= 0x203e) - cp = from_ucs4_tab4[ch - 0x2013]; - else if (ch == 0x2103) - cp = "\xa2\x4a"; - else if (ch == 0x2105) - cp = "\xa1\xc1"; - else if (ch == 0x2109) - cp = "\xa2\x4b"; - else if (ch >= 0x2160 && ch <= 0x2169) - { - buf[0] = '\xa2'; - buf[1] = '\xb9' + (ch - 0x2160); - cp = buf; - } - else if (ch >= 0x2190 && ch <= 0x2199) - cp = from_ucs4_tab5[ch - 0x2190]; - else if (ch >= 0x221a && ch <= 0x22bf) - cp = from_ucs4_tab6[ch - 0x221a]; - else if (ch >= 0x2460 && ch <= 0x247d) - cp = from_ucs4_tab7[ch - 0x2460]; - else if (ch >= 0x2500 && ch <= 0x2642) - cp = from_ucs4_tab8[ch - 0x2500]; - else if (ch >= 0x3000 && ch <= 0x3129) - cp = from_ucs4_tab9[ch - 0x3000]; - else if (ch == 0x32a3) - cp = "\xa1\xc0"; - else if (ch >= 0x338e && ch <= 0x33d5) - cp = from_ucs4_tab10[ch - 0x338e]; - else if (ch >= 0x4e00 && ch <= 0x9fa4) - cp = from_ucs4_tab11[ch - 0x4e00]; - else if (ch == 0xfa0c) - cp = "\xc9\x4a"; - else if (ch == 0xfa0d) - cp = "\xdd\xfc"; - else if (ch >= 0xfe30 && ch <= 0xfe6b) - cp = from_ucs4_tab12[ch - 0xfe30]; - else if (ch >= 0xff01 && ch <= 0xff64) - cp = from_ucs4_tab13[ch - 0xff01]; - else - /* Illegal character. */ - break; - } - else - cp = from_ucs4_tab1[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_big5_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; +/* First define the conversion function from Big5 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 >= '\xa1' && ch <= '\xff') \ + { \ + /* Two-byte character. First test whether the next character \ + is also available. */ \ + uint32_t ch2; \ + int idx; \ + \ + if (NEED_LENGTH_TEST && inptr + 1 >= inend) \ + { \ + /* The second character is not available. */ \ + result = GCONV_INCOMPLETE_INPUT; \ + break; \ + } \ + \ + idx = (ch - 0xa1) * 157; \ + ch2 = inptr[1]; \ + /* See whether the second byte is in the correct range. */ \ + if (ch2 >= '\x40' && ch2 <= '\x7e') \ + idx += ch2 - 0x40; \ + else if (ch2 >= '\xa1' && ch2 <= '\xfe') \ + idx += 0x3f + (ch2 - 0xa1); \ + else \ + { \ + /* This is illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + /* Get the value from the table. */ \ + ch = big5_to_ucs[idx]; \ + \ + /* Is this character defined? */ \ + if (ch == L'\0' && *inptr != '\0') \ + { \ + /* This is an illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + inptr += 2; \ + } \ + else \ + ++inptr; \ + \ + *((uint32_t *) outptr)++ = ch; \ + } +#include <iconv/loop.c> - 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); \ + char buf[2]; \ + const char *cp; \ + \ + if (ch >= sizeof (from_ucs4_tab1) / sizeof (from_ucs4_tab1[0])) \ + switch (ch) \ + { \ + case 0x2c7 ... 0x2d9: \ + cp = from_ucs4_tab2[ch - 0x2c7]; \ + break; \ + case 0x391 ... 0x451: \ + cp = from_ucs4_tab3[ch - 0x391]; \ + break; \ + case 0x2013 ... 0x203e: \ + cp = from_ucs4_tab4[ch - 0x2013]; \ + break; \ + case 0x2103: \ + cp = "\xa2\x4a"; \ + break; \ + case 0x2105: \ + cp = "\xa1\xc1"; \ + break; \ + case 0x2109: \ + cp = "\xa2\x4b"; \ + break; \ + case 0x2160 ... 0x2169: \ + { \ + buf[0] = '\xa2'; \ + buf[1] = '\xb9' + (ch - 0x2160); \ + cp = buf; \ + } \ + break; \ + case 0x2190 ... 0x2199: \ + cp = from_ucs4_tab5[ch - 0x2190]; \ + break; \ + case 0x221a ... 0x22bf: \ + cp = from_ucs4_tab6[ch - 0x221a]; \ + break; \ + case 0x2460 ... 0x247d: \ + cp = from_ucs4_tab7[ch - 0x2460]; \ + break; \ + case 0x2500 ... 0x2642: \ + cp = from_ucs4_tab8[ch - 0x2500]; \ + break; \ + case 0x3000 ... 0x3129: \ + cp = from_ucs4_tab9[ch - 0x3000]; \ + break; \ + case 0x32a3: \ + cp = "\xa1\xc0"; \ + break; \ + case 0x338e ... 0x33d5: \ + cp = from_ucs4_tab10[ch - 0x338e]; \ + break; \ + case 0x4e00 ... 0x9fa4: \ + cp = from_ucs4_tab11[ch - 0x4e00]; \ + break; \ + case 0xfa0c: \ + cp = "\xc9\x4a"; \ + break; \ + case 0xfa0d: \ + cp = "\xdd\xfc"; \ + break; \ + case 0xfe30 ... 0xfe6b: \ + cp = from_ucs4_tab12[ch - 0xfe30]; \ + break; \ + case 0xff01 ... 0xff64: \ + cp = from_ucs4_tab13[ch - 0xff01]; \ + break; \ + default: \ + /* Illegal character. */ \ + cp = ""; \ + break; \ + } \ + else \ + cp = from_ucs4_tab1[ch]; \ + \ + if (cp[0] == '\0' && ch != 0) \ + { \ + /* Illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + /* See whether there is enough room for the second byte we write. */ \ + if (NEED_LENGTH_TEST && cp[1] != '\0' && outptr + 1 >= outend) \ + { \ + /* We have not enough room. */ \ + result = GCONV_FULL_OUTPUT; \ + break; \ + } \ + \ + *outptr++ = cp[0]; \ + if (cp[1] != '\0') \ + *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> |