diff options
Diffstat (limited to 'iconvdata/iso8859-1.c')
| -rw-r--r-- | iconvdata/iso8859-1.c | 217 |
1 files changed, 41 insertions, 176 deletions
diff --git a/iconvdata/iso8859-1.c b/iconvdata/iso8859-1.c index b9484a0..3e50b79 100644 --- a/iconvdata/iso8859-1.c +++ b/iconvdata/iso8859-1.c @@ -18,179 +18,44 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <gconv.h> -#include <string.h> - -/* Direction of the transformation. */ -static int to_iso88591_object; -static int from_iso88591_object; - - -int -gconv_init (struct gconv_step *step) -{ - /* Determine which direction. */ - if (strcasestr (step->from_name, "ISO-8859-1") != NULL) - step->data = &from_iso88591_object; - else if (strcasestr (step->to_name, "ISO-8859-1") != NULL) - step->data = &to_iso88591_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_iso88591_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)) - { - *((wchar_t *) (outbuf + outwchars)) = - (unsigned char) inbuf[cnt]; - ++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; - - while (inwchars >= cnt + sizeof (wchar_t) - && outchars < data->outbufsize) - { - if (*((wchar_t *) (inbuf + cnt)) >= L'\0' - && *((wchar_t *) (inbuf + cnt)) <= L'\377') - outbuf[outchars] = *((wchar_t *) (inbuf + cnt)); - else - /* Here is where the transliteration would enter the - scene. */ - break; - - ++do_write; - ++outchars; - cnt += sizeof (wchar_t); - } - *inbufsize -= cnt; - inbuf += cnt; - data->outbufavail = outchars; - - if (outchars < 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_iso88591_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; -} +#include <stdint.h> + +/* Definitions used in the body of the `gconv' function. */ +#define CHARSET_NAME "ISO-8859-1" +#define FROM_LOOP from_iso8859_1 +#define TO_LOOP to_iso8859_1 +#define DEFINE_INIT 1 +#define DEFINE_FINI 1 +#define MIN_NEEDED_FROM 1 +#define MIN_NEEDED_TO 4 + +/* First define the conversion function from ISO 8859-1 to UCS4. */ +#define MIN_NEEDED_INPUT MIN_NEEDED_FROM +#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO +#define LOOPFCT FROM_LOOP +#define BODY \ + *((uint32_t *) outptr)++ = *inptr++; +#include <iconv/loop.c> + + +/* Next, define the other direction. */ +#define MIN_NEEDED_INPUT MIN_NEEDED_FROM +#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO +#define LOOPFCT TO_LOOP +#define BODY \ + { \ + uint32_t ch = *((uint32_t *) inptr); \ + if (ch > 0xff) \ + { \ + /* We have an illegal character. */ \ + result = GCONV_ILLEGAL_INPUT; \ + break; \ + } \ + *outptr++ = (unsigned char) ch; \ + inptr += 4; \ + } +#include <iconv/loop.c> + + +/* Now define the toplevel functions. */ +#include <iconv/skeleton.c> |