diff options
Diffstat (limited to 'iconvdata/iso6937.c')
| -rw-r--r-- | iconvdata/iso6937.c | 464 |
1 files changed, 176 insertions, 288 deletions
diff --git a/iconvdata/iso6937.c b/iconvdata/iso6937.c index 21e3ab4898..b121ffa77a 100644 --- a/iconvdata/iso6937.c +++ b/iconvdata/iso6937.c @@ -18,11 +18,10 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <gconv.h> -#include <string.h> +#include <stdint.h> /* Data taken from the WG15 tables. */ -static const wchar_t to_ucs4[256] = +static const uint32_t to_ucs4[256] = { /* 0x00 */ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, /* 0x08 */ 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, @@ -60,7 +59,7 @@ static const wchar_t to_ucs4[256] = /* The outer array range runs from 0xc1 to 0xcf, the inner range from 0x20 to 0x7f. */ -static const wchar_t to_ucs4_comb[15][96] = +static const uint32_t to_ucs4_comb[15][96] = { /* 0xc1 */ { @@ -371,290 +370,179 @@ static const char from_ucs4[][2] = */ }; -/* Direction of the transformation. */ -static int to_iso6937_object; -static int from_iso6937_object; +/* Definitions used in the body of the `gconv' function. */ +#define CHARSET_NAME "ISO_6937" +#define FROM_LOOP from_iso6937 +#define TO_LOOP to_iso6937 +#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 ISO 6937 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 >= 0xc1 && ch <= 0xcf) \ + { \ + /* Composed character. First test whether the next character \ + is also available. */ \ + int ch2; \ + \ + if (inptr + 1 >= inend) \ + { \ + /* The second character is not available. Store the \ + intermediate result. */ \ + result = GCONV_INCOMPLETE_INPUT; \ + break; \ + } \ + \ + ch2 = inptr[1]; \ + \ + if (ch2 < 0x20 || ch2 >= 0x80) \ + { \ + /* This is illegal. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + ch = to_ucs4_comb[ch - 0xc1][ch2 - 0x20]; \ + \ + if (ch == 0) \ + { \ + /* Illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + \ + inptr += 2; \ + } \ + else \ + { \ + ch = to_ucs4[ch]; \ + \ + if (ch == 0 && *inptr != '\0') \ + { \ + /* This is an illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + ++inptr; \ + } \ + \ + *((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 \ + { \ + char tmp[2]; \ + uint32_t ch = *((uint32_t *) inptr); \ + const char *cp; \ + \ + if (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0])) \ + { \ + int fail = 0; \ + switch (ch) \ + { \ + case 0x2c7: \ + cp = "\xcf\x20"; \ + break; \ + case 0x2d8 ... 0x2dd: \ + { \ + static const char map[5] = "\xc6\xc7\xca\xce\xcd"; \ + \ + tmp[0] = map[ch - 0x2d8]; \ + tmp[1] = ' '; \ + cp = tmp; \ + } \ + break; \ + case 0x2014: \ + cp = "\xd0"; \ + break; \ + case 0x2018: \ + cp = "\xa9"; \ + break; \ + case 0x2019: \ + cp = "\xb9"; \ + break; \ + case 0x201c: \ + cp = "\xaa"; \ + break; \ + case 0x201d: \ + cp = "\xba"; \ + break; \ + case 0x2122: \ + cp = "\xd4"; \ + break; \ + case 0x2126: \ + cp = "\xe0"; \ + break; \ + case 0x215b ... 0x215e: \ + tmp[0] = 0xdc + (ch - 0x215b); \ + tmp[1] = '\0'; \ + cp = tmp; \ + break; \ + case 0x2190 ... 0x2193: \ + tmp[0] = 0xac + (ch - 0x2190); \ + tmp[1] = '\0'; \ + cp = tmp; \ + break; \ + case 0x266a: \ + cp = "\xd5"; \ + break; \ + default: \ + cp = NULL; \ + fail = 1; \ + } \ + \ + if (fail) \ + { \ + /* Illegal characters. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + } \ + else if (from_ucs4[ch][0] == '\0' && ch != 0) \ + { \ + /* Illegal characters. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + else \ + cp = from_ucs4[ch]; \ + \ + *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> -int -gconv_init (struct gconv_step *step) -{ - /* Determine which direction. */ - if (strcasestr (step->from_name, "ISO_6937") != NULL) - step->data = &from_iso6937_object; - else if (strcasestr (step->to_name, "ISO_6937") != NULL) - step->data = &to_iso6937_object; - else - return GCONV_NOCONV; - - return GCONV_OK; -} - - -void -gconv_end (struct gconv_step *data) -{ - /* Nothign 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_iso6937_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 >= '\xc1' && inchar <= '\xcf') - { - /* Composed 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 = inbuf[++cnt]; - - if (inchar2 < '\x20' || inchar2 >= '\x80') - /* This is illegal. */ - ch = L'\0'; - else - ch = to_ucs4_comb[inchar - 0xc1][inchar2 - 0x20]; - - if (ch == L'\0') - /* Undo the increment for illegal characters. */ - --cnt; - } - else - ch = to_ucs4[inchar]; - - 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) - { - char tmp[2]; - int ch = *((wchar_t *) (inbuf + cnt)); - const char *cp; - - if (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0])) - { - int fail = 0; - switch (ch) - { - case 0x2c7: - cp = "\xcf\x20"; - break; - case 0x2d8 ... 0x2dd: - { - static const char map[5] = "\xc6\xc7\xca\xce\xcd"; - - tmp[0] = map[ch - 0x2d8]; - tmp[1] = ' '; - cp = tmp; - } - break; - case 0x2014: - cp = "\xd0"; - break; - case 0x2018: - cp = "\xa9"; - break; - case 0x2019: - cp = "\xb9"; - break; - case 0x201c: - cp = "\xaa"; - break; - case 0x201d: - cp = "\xba"; - break; - case 0x2122: - cp = "\xd4"; - break; - case 0x2126: - cp = "\xe0"; - break; - case 0x215b ... 0x215e: - tmp[0] = 0xdc + (ch - 0x215b); - tmp[1] = '\0'; - cp = tmp; - break; - case 0x2190 ... 0x2193: - tmp[0] = 0xac + (ch - 0x2190); - tmp[1] = '\0'; - cp = tmp; - break; - case 0x266a: - cp = "\xd5"; - break; - default: - cp = NULL; - fail = 1; - } - - if (fail) - /* Illegal characters. */ - break; - } - else if (ch < 0 || (from_ucs4[ch][0] == '\0' && ch != 0)) - break; - else - cp = from_ucs4[ch]; - - 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_iso6937_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; -} +/* Now define the toplevel functions. */ +#include <iconv/skeleton.c> |