-static struct {
- unsigned long x1, x2;
- unsigned y;
-} latin1_comb[] = {
- { 'A', 0x0300, 0xc0}, /* LATIN CAPITAL LETTER A WITH GRAVE */
- { 'A', 0x0301, 0xc1}, /* LATIN CAPITAL LETTER A WITH ACUTE */
- { 'A', 0x0302, 0xc2}, /* LATIN CAPITAL LETTER A WITH CIRCUMFLEX */
- { 'A', 0x0303, 0xc3}, /* LATIN CAPITAL LETTER A WITH TILDE */
- { 'A', 0x0308, 0xc4}, /* LATIN CAPITAL LETTER A WITH DIAERESIS */
- { 'A', 0x030a, 0xc5}, /* LATIN CAPITAL LETTER A WITH RING ABOVE */
- /* no need for 0xc6 LATIN CAPITAL LETTER AE */
- { 'C', 0x0327, 0xc7}, /* LATIN CAPITAL LETTER C WITH CEDILLA */
- { 'E', 0x0300, 0xc8}, /* LATIN CAPITAL LETTER E WITH GRAVE */
- { 'E', 0x0301, 0xc9}, /* LATIN CAPITAL LETTER E WITH ACUTE */
- { 'E', 0x0302, 0xca}, /* LATIN CAPITAL LETTER E WITH CIRCUMFLEX */
- { 'E', 0x0308, 0xcb}, /* LATIN CAPITAL LETTER E WITH DIAERESIS */
- { 'I', 0x0300, 0xcc}, /* LATIN CAPITAL LETTER I WITH GRAVE */
- { 'I', 0x0301, 0xcd}, /* LATIN CAPITAL LETTER I WITH ACUTE */
- { 'I', 0x0302, 0xce}, /* LATIN CAPITAL LETTER I WITH CIRCUMFLEX */
- { 'I', 0x0308, 0xcf}, /* LATIN CAPITAL LETTER I WITH DIAERESIS */
- { 'N', 0x0303, 0xd1}, /* LATIN CAPITAL LETTER N WITH TILDE */
- { 'O', 0x0300, 0xd2}, /* LATIN CAPITAL LETTER O WITH GRAVE */
- { 'O', 0x0301, 0xd3}, /* LATIN CAPITAL LETTER O WITH ACUTE */
- { 'O', 0x0302, 0xd4}, /* LATIN CAPITAL LETTER O WITH CIRCUMFLEX */
- { 'O', 0x0303, 0xd5}, /* LATIN CAPITAL LETTER O WITH TILDE */
- { 'O', 0x0308, 0xd6}, /* LATIN CAPITAL LETTER O WITH DIAERESIS */
- /* omitted: 0xd7 MULTIPLICATION SIGN */
- /* omitted: 0xd8 LATIN CAPITAL LETTER O WITH STROKE */
- { 'U', 0x0300, 0xd9}, /* LATIN CAPITAL LETTER U WITH GRAVE */
- { 'U', 0x0301, 0xda}, /* LATIN CAPITAL LETTER U WITH ACUTE */
- { 'U', 0x0302, 0xdb}, /* LATIN CAPITAL LETTER U WITH CIRCUMFLEX */
- { 'U', 0x0308, 0xdc}, /* LATIN CAPITAL LETTER U WITH DIAERESIS */
- { 'Y', 0x0301, 0xdd}, /* LATIN CAPITAL LETTER Y WITH ACUTE */
- /* omitted: 0xde LATIN CAPITAL LETTER THORN */
- /* omitted: 0xdf LATIN SMALL LETTER SHARP S */
- { 'a', 0x0300, 0xe0}, /* LATIN SMALL LETTER A WITH GRAVE */
- { 'a', 0x0301, 0xe1}, /* LATIN SMALL LETTER A WITH ACUTE */
- { 'a', 0x0302, 0xe2}, /* LATIN SMALL LETTER A WITH CIRCUMFLEX */
- { 'a', 0x0303, 0xe3}, /* LATIN SMALL LETTER A WITH TILDE */
- { 'a', 0x0308, 0xe4}, /* LATIN SMALL LETTER A WITH DIAERESIS */
- { 'a', 0x030a, 0xe5}, /* LATIN SMALL LETTER A WITH RING ABOVE */
- /* omitted: 0xe6 LATIN SMALL LETTER AE */
- { 'c', 0x0327, 0xe7}, /* LATIN SMALL LETTER C WITH CEDILLA */
- { 'e', 0x0300, 0xe8}, /* LATIN SMALL LETTER E WITH GRAVE */
- { 'e', 0x0301, 0xe9}, /* LATIN SMALL LETTER E WITH ACUTE */
- { 'e', 0x0302, 0xea}, /* LATIN SMALL LETTER E WITH CIRCUMFLEX */
- { 'e', 0x0308, 0xeb}, /* LATIN SMALL LETTER E WITH DIAERESIS */
- { 'i', 0x0300, 0xec}, /* LATIN SMALL LETTER I WITH GRAVE */
- { 'i', 0x0301, 0xed}, /* LATIN SMALL LETTER I WITH ACUTE */
- { 'i', 0x0302, 0xee}, /* LATIN SMALL LETTER I WITH CIRCUMFLEX */
- { 'i', 0x0308, 0xef}, /* LATIN SMALL LETTER I WITH DIAERESIS */
- /* omitted: 0xf0 LATIN SMALL LETTER ETH */
- { 'n', 0x0303, 0xf1}, /* LATIN SMALL LETTER N WITH TILDE */
- { 'o', 0x0300, 0xf2}, /* LATIN SMALL LETTER O WITH GRAVE */
- { 'o', 0x0301, 0xf3}, /* LATIN SMALL LETTER O WITH ACUTE */
- { 'o', 0x0302, 0xf4}, /* LATIN SMALL LETTER O WITH CIRCUMFLEX */
- { 'o', 0x0303, 0xf5}, /* LATIN SMALL LETTER O WITH TILDE */
- { 'o', 0x0308, 0xf6}, /* LATIN SMALL LETTER O WITH DIAERESIS */
- /* omitted: 0xf7 DIVISION SIGN */
- /* omitted: 0xf8 LATIN SMALL LETTER O WITH STROKE */
- { 'u', 0x0300, 0xf9}, /* LATIN SMALL LETTER U WITH GRAVE */
- { 'u', 0x0301, 0xfa}, /* LATIN SMALL LETTER U WITH ACUTE */
- { 'u', 0x0302, 0xfb}, /* LATIN SMALL LETTER U WITH CIRCUMFLEX */
- { 'u', 0x0308, 0xfc}, /* LATIN SMALL LETTER U WITH DIAERESIS */
- { 'y', 0x0301, 0xfd}, /* LATIN SMALL LETTER Y WITH ACUTE */
- /* omitted: 0xfe LATIN SMALL LETTER THORN */
- { 'y', 0x0308, 0xff}, /* LATIN SMALL LETTER Y WITH DIAERESIS */
-
- { 0, 0, 0}
-};
-
-static unsigned long yaz_read_ISO8859_1 (yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read)
-{
- unsigned long x = inp[0];
- *no_read = 1;
- return x;
-}
-
-static size_t yaz_init_marc8(yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read)
-{
- cd->marc8_esc_mode = 'B';
-
- cd->comb_offset = cd->comb_size = 0;
- cd->compose_char = 0;
-
- cd->write_marc8_comb_no = 0;
- cd->write_marc8_last = 0;
- cd->write_marc8_page_chr = "\033(B";
-
- return 0;
-}
-
-static size_t yaz_init_UTF8 (yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read)
-{
- if (inp[0] != 0xef)
- {
- *no_read = 0;
- return 0;
- }
- if (inbytesleft < 3)
- {
- cd->my_errno = YAZ_ICONV_EINVAL;
- return (size_t) -1;
- }
- if (inp[1] != 0xbb && inp[2] == 0xbf)
- *no_read = 3;
- else
- *no_read = 0;
- return 0;
-}
-
-unsigned long yaz_read_UTF8_char(unsigned char *inp,
- size_t inbytesleft, size_t *no_read,
- int *error)
-{
- unsigned long x = 0;
-
- if (inp[0] <= 0x7f)
- {
- x = inp[0];
- *no_read = 1;
- }
- else if (inp[0] <= 0xbf || inp[0] >= 0xfe)
- {
- *no_read = 0;
- *error = YAZ_ICONV_EILSEQ;
- }
- else if (inp[0] <= 0xdf && inbytesleft >= 2)
- {
- x = ((inp[0] & 0x1f) << 6) | (inp[1] & 0x3f);
- if (x >= 0x80)
- *no_read = 2;
- else
- {
- *no_read = 0;
- *error = YAZ_ICONV_EILSEQ;
- }
- }
- else if (inp[0] <= 0xef && inbytesleft >= 3)
- {
- x = ((inp[0] & 0x0f) << 12) | ((inp[1] & 0x3f) << 6) |
- (inp[2] & 0x3f);
- if (x >= 0x800)
- *no_read = 3;
- else
- {
- *no_read = 0;
- *error = YAZ_ICONV_EILSEQ;
- }
- }
- else if (inp[0] <= 0xf7 && inbytesleft >= 4)
- {
- x = ((inp[0] & 0x07) << 18) | ((inp[1] & 0x3f) << 12) |
- ((inp[2] & 0x3f) << 6) | (inp[3] & 0x3f);
- if (x >= 0x10000)
- *no_read = 4;
- else
- {
- *no_read = 0;
- *error = YAZ_ICONV_EILSEQ;
- }
- }
- else if (inp[0] <= 0xfb && inbytesleft >= 5)
- {
- x = ((inp[0] & 0x03) << 24) | ((inp[1] & 0x3f) << 18) |
- ((inp[2] & 0x3f) << 12) | ((inp[3] & 0x3f) << 6) |
- (inp[4] & 0x3f);
- if (x >= 0x200000)
- *no_read = 5;
- else
- {
- *no_read = 0;
- *error = YAZ_ICONV_EILSEQ;
- }
- }
- else if (inp[0] <= 0xfd && inbytesleft >= 6)
- {
- x = ((inp[0] & 0x01) << 30) | ((inp[1] & 0x3f) << 24) |
- ((inp[2] & 0x3f) << 18) | ((inp[3] & 0x3f) << 12) |
- ((inp[4] & 0x3f) << 6) | (inp[5] & 0x3f);
- if (x >= 0x4000000)
- *no_read = 6;
- else
- {
- *no_read = 0;
- *error = YAZ_ICONV_EILSEQ;
- }
- }
- else
- {
- *no_read = 0;
- *error = YAZ_ICONV_EINVAL;
- }
- return x;
-}
-
-static unsigned long yaz_read_UTF8 (yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read)
-{
- return yaz_read_UTF8_char(inp, inbytesleft, no_read, &cd->my_errno);
-}
-
-static unsigned long yaz_read_UCS4 (yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read)
-{
- unsigned long x = 0;
-
- if (inbytesleft < 4)
- {
- cd->my_errno = YAZ_ICONV_EINVAL; /* incomplete input */
- *no_read = 0;
- }
- else
- {
- x = (inp[0]<<24) | (inp[1]<<16) | (inp[2]<<8) | inp[3];
- *no_read = 4;
- }
- return x;
-}
-
-static unsigned long yaz_read_UCS4LE (yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read)
-{
- unsigned long x = 0;
-
- if (inbytesleft < 4)
- {
- cd->my_errno = YAZ_ICONV_EINVAL; /* incomplete input */
- *no_read = 0;
- }
- else
- {
- x = (inp[3]<<24) | (inp[2]<<16) | (inp[1]<<8) | inp[0];
- *no_read = 4;
- }
- return x;
-}
-
-#if HAVE_WCHAR_H
-static unsigned long yaz_read_wchar_t (yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read)
-{
- unsigned long x = 0;
-
- if (inbytesleft < sizeof(wchar_t))
- {
- cd->my_errno = YAZ_ICONV_EINVAL; /* incomplete input */
- *no_read = 0;
- }
- else
- {
- wchar_t wch;
- memcpy (&wch, inp, sizeof(wch));
- x = wch;
- *no_read = sizeof(wch);
- }
- return x;
-}
-#endif
-
-
-static unsigned long yaz_read_marc8_comb (yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read,
- int *comb);
-
-static unsigned long yaz_read_marc8 (yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read)
-{
- unsigned long x;
- if (cd->comb_offset < cd->comb_size)
- {
- *no_read = cd->comb_no_read[cd->comb_offset];
- x = cd->comb_x[cd->comb_offset];
-
- /* special case for double-diacritic combining characters,
- INVERTED BREVE and DOUBLE TILDE.
- We'll increment the no_read counter by 1, since we want to skip over
- the processing of the closing ligature character
- */
- /* this code is no longer necessary.. our handlers code in
- yaz_marc8_?_conv (generated by charconv.tcl) now returns
- 0 and no_read=1 when a sequence does not match the input.
- The SECOND HALFs in codetables.xml produces a non-existant
- entry in the conversion trie.. Hence when met, the input byte is
- skipped as it should (in yaz_iconv)
- */
-#if 0
- if (x == 0x0361 || x == 0x0360)
- *no_read += 1;
-#endif
- cd->comb_offset++;
- return x;
- }
-
- cd->comb_offset = 0;
- for (cd->comb_size = 0; cd->comb_size < 8; cd->comb_size++)
- {
- int comb = 0;
- x = yaz_read_marc8_comb(cd, inp, inbytesleft, no_read, &comb);
- if (!comb || !x)
- break;
- cd->comb_x[cd->comb_size] = x;
- cd->comb_no_read[cd->comb_size] = *no_read;
- inp += *no_read;
- inbytesleft = inbytesleft - *no_read;
- }
- return x;
-}
-
-static unsigned long yaz_read_marc8s(yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read)
-{
- unsigned long x = yaz_read_marc8(cd, inp, inbytesleft, no_read);
- if (x && cd->comb_size == 1)
- {
- /* For MARC8s we try to get a Latin-1 page code out of it */
- int i;
- for (i = 0; latin1_comb[i].x1; i++)
- if (cd->comb_x[0] == latin1_comb[i].x2 && x == latin1_comb[i].x1)
- {
- *no_read += cd->comb_no_read[0];
- cd->comb_size = 0;
- x = latin1_comb[i].y;
- break;
- }
- }
- return x;
-}
-
-static unsigned long yaz_read_marc8_comb(yaz_iconv_t cd, unsigned char *inp,
- size_t inbytesleft, size_t *no_read,
- int *comb)
-{
- *no_read = 0;
- while(inbytesleft >= 1 && inp[0] == 27)
- {
- size_t inbytesleft0 = inbytesleft;
- inp++;
- inbytesleft--;
- while(inbytesleft > 0 && strchr("(,$!", *inp))
- {
- inbytesleft--;
- inp++;
- }
- if (inbytesleft <= 0)
- {
- *no_read = 0;
- cd->my_errno = YAZ_ICONV_EINVAL;
- return 0;
- }
- cd->marc8_esc_mode = *inp++;
- inbytesleft--;
- (*no_read) += inbytesleft0 - inbytesleft;
- }
- if (inbytesleft <= 0)
- return 0;
- else
- {
- unsigned long x;
- size_t no_read_sub = 0;
- *comb = 0;
-
- switch(cd->marc8_esc_mode)
- {
- case 'B': /* Basic ASCII */
- case 'E': /* ANSEL */
- case 's': /* ASCII */
- x = yaz_marc8_1_conv(inp, inbytesleft, &no_read_sub, comb);
- break;
- case 'g': /* Greek */
- x = yaz_marc8_2_conv(inp, inbytesleft, &no_read_sub, comb);
- break;
- case 'b': /* Subscripts */
- x = yaz_marc8_3_conv(inp, inbytesleft, &no_read_sub, comb);
- break;
- case 'p': /* Superscripts */
- x = yaz_marc8_4_conv(inp, inbytesleft, &no_read_sub, comb);
- break;
- case '2': /* Basic Hebrew */
- x = yaz_marc8_5_conv(inp, inbytesleft, &no_read_sub, comb);
- break;
- case 'N': /* Basic Cyrillic */
- case 'Q': /* Extended Cyrillic */
- x = yaz_marc8_6_conv(inp, inbytesleft, &no_read_sub, comb);
- break;
- case '3': /* Basic Arabic */
- case '4': /* Extended Arabic */
- x = yaz_marc8_7_conv(inp, inbytesleft, &no_read_sub, comb);
- break;
- case 'S': /* Greek */
- x = yaz_marc8_8_conv(inp, inbytesleft, &no_read_sub, comb);
- break;
- case '1': /* Chinese, Japanese, Korean (EACC) */
- x = yaz_marc8_9_conv(inp, inbytesleft, &no_read_sub, comb);
- break;
- default:
- *no_read = 0;
- cd->my_errno = YAZ_ICONV_EILSEQ;
- return 0;
- }
- *no_read += no_read_sub;
- return x;
- }
-}
-
-static size_t yaz_write_UTF8(yaz_iconv_t cd, unsigned long x,
- char **outbuf, size_t *outbytesleft,
- int last)
-{
- return yaz_write_UTF8_char(x, outbuf, outbytesleft, &cd->my_errno);
-}
-
-size_t yaz_write_UTF8_char(unsigned long x,
- char **outbuf, size_t *outbytesleft,
- int *error)
-{
- unsigned char *outp = (unsigned char *) *outbuf;
-
- if (x <= 0x7f && *outbytesleft >= 1)
- {
- *outp++ = (unsigned char) x;
- (*outbytesleft)--;
- }
- else if (x <= 0x7ff && *outbytesleft >= 2)
- {
- *outp++ = (unsigned char) ((x >> 6) | 0xc0);
- *outp++ = (unsigned char) ((x & 0x3f) | 0x80);
- (*outbytesleft) -= 2;
- }
- else if (x <= 0xffff && *outbytesleft >= 3)
- {
- *outp++ = (unsigned char) ((x >> 12) | 0xe0);
- *outp++ = (unsigned char) (((x >> 6) & 0x3f) | 0x80);
- *outp++ = (unsigned char) ((x & 0x3f) | 0x80);
- (*outbytesleft) -= 3;
- }
- else if (x <= 0x1fffff && *outbytesleft >= 4)
- {
- *outp++ = (unsigned char) ((x >> 18) | 0xf0);
- *outp++ = (unsigned char) (((x >> 12) & 0x3f) | 0x80);
- *outp++ = (unsigned char) (((x >> 6) & 0x3f) | 0x80);
- *outp++ = (unsigned char) ((x & 0x3f) | 0x80);
- (*outbytesleft) -= 4;
- }
- else if (x <= 0x3ffffff && *outbytesleft >= 5)
- {
- *outp++ = (unsigned char) ((x >> 24) | 0xf8);
- *outp++ = (unsigned char) (((x >> 18) & 0x3f) | 0x80);
- *outp++ = (unsigned char) (((x >> 12) & 0x3f) | 0x80);
- *outp++ = (unsigned char) (((x >> 6) & 0x3f) | 0x80);
- *outp++ = (unsigned char) ((x & 0x3f) | 0x80);
- (*outbytesleft) -= 5;
- }
- else if (*outbytesleft >= 6)
- {
- *outp++ = (unsigned char) ((x >> 30) | 0xfc);
- *outp++ = (unsigned char) (((x >> 24) & 0x3f) | 0x80);
- *outp++ = (unsigned char) (((x >> 18) & 0x3f) | 0x80);
- *outp++ = (unsigned char) (((x >> 12) & 0x3f) | 0x80);
- *outp++ = (unsigned char) (((x >> 6) & 0x3f) | 0x80);
- *outp++ = (unsigned char) ((x & 0x3f) | 0x80);
- (*outbytesleft) -= 6;
- }
- else
- {
- *error = YAZ_ICONV_E2BIG; /* not room for output */
- return (size_t)(-1);
- }
- *outbuf = (char *) outp;
- return 0;
-}
-
-
-static size_t yaz_write_ISO8859_1 (yaz_iconv_t cd, unsigned long x,
- char **outbuf, size_t *outbytesleft,
- int last)
-{
- /* list of two char unicode sequence that, when combined, are
- equivalent to single unicode chars that can be represented in
- ISO-8859-1/Latin-1.
- Regular iconv on Linux at least does not seem to convert these,
- but since MARC-8 to UTF-8 generates these composed sequence
- we get a better chance of a successful MARC-8 -> ISO-8859-1
- conversion */
- unsigned char *outp = (unsigned char *) *outbuf;
-
- if (cd->compose_char)
- {
- int i;
- for (i = 0; latin1_comb[i].x1; i++)
- if (cd->compose_char == latin1_comb[i].x1 && x == latin1_comb[i].x2)
- {
- x = latin1_comb[i].y;
- break;
- }
- if (*outbytesleft < 1)
- { /* no room. Retain compose_char and bail out */
- cd->my_errno = YAZ_ICONV_E2BIG;
- return (size_t)(-1);
- }
- if (!latin1_comb[i].x1)
- { /* not found. Just write compose_char */
- *outp++ = (unsigned char) cd->compose_char;
- (*outbytesleft)--;
- *outbuf = (char *) outp;
- }
- /* compose_char used so reset it. x now holds current char */
- cd->compose_char = 0;
- }
-
- if (!last && x > 32 && x < 127 && cd->compose_char == 0)
- {
- cd->compose_char = x;
- return 0;
- }
- else if (x > 255 || x < 1)
- {
- cd->my_errno = YAZ_ICONV_EILSEQ;
- return (size_t) -1;
- }
- else if (*outbytesleft < 1)
- {
- cd->my_errno = YAZ_ICONV_E2BIG;
- return (size_t)(-1);
- }
- *outp++ = (unsigned char) x;
- (*outbytesleft)--;
- *outbuf = (char *) outp;
- return 0;
-}
-