X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=src%2Fsiconv.c;h=e0f3514f776c6816e59e68fdbfa5fdc80cf34cc6;hp=de3c54e10326bb307619951ac36f027243a1b19d;hb=65f1b9fce2d1d86df7d75645fb46fbba32dd01e3;hpb=e4fc51d4432f2adcc67db4b50ac5ce687302f9be diff --git a/src/siconv.c b/src/siconv.c index de3c54e..e0f3514 100644 --- a/src/siconv.c +++ b/src/siconv.c @@ -1,11 +1,9 @@ /* * Copyright (C) 1995-2008, Index Data ApS * See the file LICENSE for details. - * - * $Id: siconv.c,v 1.50 2008-03-12 08:53:28 adam Exp $ */ /** - * \file siconv.c + * \file * \brief Implements simple ICONV * * This implements an interface similar to that of iconv and @@ -13,8 +11,6 @@ * For systems where iconv is not present, this layer * provides a few important conversions: UTF-8, MARC-8, Latin-1. * - * MARC-8 reference: - * http://www.loc.gov/marc/specifications/speccharmarc8.html */ #if HAVE_CONFIG_H @@ -35,14 +31,8 @@ #include #include -#include #include "iconv-p.h" -typedef unsigned long yaz_conv_func_t(unsigned char *inp, size_t inbytesleft, - size_t *no_read, int *combining, - unsigned mask, int boffset); - - yaz_conv_func_t yaz_marc8_42_conv; yaz_conv_func_t yaz_marc8_45_conv; yaz_conv_func_t yaz_marc8_67_conv; @@ -56,30 +46,13 @@ yaz_conv_func_t yaz_marc8_34_conv; yaz_conv_func_t yaz_marc8_53_conv; yaz_conv_func_t yaz_marc8_31_conv; -yaz_conv_func_t yaz_marc8r_42_conv; -yaz_conv_func_t yaz_marc8r_45_conv; -yaz_conv_func_t yaz_marc8r_67_conv; -yaz_conv_func_t yaz_marc8r_62_conv; -yaz_conv_func_t yaz_marc8r_70_conv; -yaz_conv_func_t yaz_marc8r_32_conv; -yaz_conv_func_t yaz_marc8r_4E_conv; -yaz_conv_func_t yaz_marc8r_51_conv; -yaz_conv_func_t yaz_marc8r_33_conv; -yaz_conv_func_t yaz_marc8r_34_conv; -yaz_conv_func_t yaz_marc8r_53_conv; -yaz_conv_func_t yaz_marc8r_31_conv; - struct yaz_iconv_struct { int my_errno; int init_flag; size_t (*init_handle)(yaz_iconv_t cd, unsigned char *inbuf, - size_t inbytesleft, size_t *no_read); + size_t inbytesleft, size_t *no_read); unsigned long (*read_handle)(yaz_iconv_t cd, unsigned char *inbuf, size_t inbytesleft, size_t *no_read); - size_t (*write_handle)(yaz_iconv_t cd, unsigned long x, - char **outbuf, size_t *outbytesleft); - size_t (*flush_handle)(yaz_iconv_t cd, - char **outbuf, size_t *outbytesleft); int g0_mode; int g1_mode; @@ -92,94 +65,10 @@ struct yaz_iconv_struct { #if HAVE_ICONV_H iconv_t iconv_cd; #endif - unsigned long compose_char; - - unsigned write_marc8_second_half_char; - unsigned long write_marc8_last; - int write_marc8_ncr; - const char *write_marc8_lpage; - const char *write_marc8_g0; - const char *write_marc8_g1; + struct yaz_iconv_encoder_s encoder; }; -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} -}; - -#define ESC "\033" - -static size_t yaz_write_marc8_page_chr(yaz_iconv_t cd, - char **outbuf, size_t *outbytesleft, - const char *page_chr); - static unsigned long yaz_read_ISO8859_1(yaz_iconv_t cd, unsigned char *inp, size_t inbytesleft, size_t *no_read) { @@ -188,8 +77,6 @@ static unsigned long yaz_read_ISO8859_1(yaz_iconv_t cd, unsigned char *inp, 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) @@ -275,16 +162,11 @@ static unsigned long yaz_read_marc8s(yaz_iconv_t cd, unsigned char *inp, 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; - } + if (yaz_iso_8859_1_lookup_x12(x, cd->comb_x[0], &x)) + { + *no_read += cd->comb_no_read[0]; + cd->comb_size = 0; + } } return x; } @@ -402,455 +284,45 @@ incomplete: return 0; } -static size_t yaz_write_ISO8859_1(yaz_iconv_t cd, unsigned long x, - char **outbuf, size_t *outbytesleft) -{ - /* 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 (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; -} - -static size_t yaz_flush_ISO8859_1(yaz_iconv_t cd, - char **outbuf, size_t *outbytesleft) -{ - if (cd->compose_char) - { - unsigned char *outp = (unsigned char *) *outbuf; - if (*outbytesleft < 1) - { - cd->my_errno = YAZ_ICONV_E2BIG; - return (size_t)(-1); - } - *outp++ = (unsigned char) cd->compose_char; - (*outbytesleft)--; - *outbuf = (char *) outp; - cd->compose_char = 0; - } - return 0; -} - -static unsigned long lookup_marc8(yaz_iconv_t cd, - unsigned long x, int *comb, - const char **page_chr) -{ - char utf8_buf[7]; - char *utf8_outbuf = utf8_buf; - size_t utf8_outbytesleft = sizeof(utf8_buf)-1, r; - - r = yaz_write_UTF8(cd, x, &utf8_outbuf, &utf8_outbytesleft); - if (r == (size_t)(-1)) - { - cd->my_errno = YAZ_ICONV_EILSEQ; - return 0; - } - else - { - unsigned char *inp; - size_t inbytesleft, no_read_sub = 0; - unsigned long x; - - *utf8_outbuf = '\0'; - inp = (unsigned char *) utf8_buf; - inbytesleft = strlen(utf8_buf); - - x = yaz_marc8r_42_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "(B"; - return x; - } - x = yaz_marc8r_45_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "(B"; - return x; - } - x = yaz_marc8r_62_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "b"; - return x; - } - x = yaz_marc8r_70_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "p"; - return x; - } - x = yaz_marc8r_32_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "(2"; - return x; - } - x = yaz_marc8r_4E_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "(N"; - return x; - } - x = yaz_marc8r_51_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "(Q"; - return x; - } - x = yaz_marc8r_33_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "(3"; - return x; - } - x = yaz_marc8r_34_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "(4"; - return x; - } - x = yaz_marc8r_53_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "(S"; - return x; - } - x = yaz_marc8r_31_conv(inp, inbytesleft, &no_read_sub, comb, 255, 0); - if (x) - { - *page_chr = ESC "$1"; - return x; - } - cd->my_errno = YAZ_ICONV_EILSEQ; - return x; - } -} - -static size_t flush_combos(yaz_iconv_t cd, - char **outbuf, size_t *outbytesleft) -{ - unsigned long y = cd->write_marc8_last; - - if (!y) - return 0; - - assert(cd->write_marc8_lpage); - if (cd->write_marc8_lpage) - { - size_t r = yaz_write_marc8_page_chr(cd, outbuf, outbytesleft, - cd->write_marc8_lpage); - if (r) - return r; - } - - if (9 >= *outbytesleft) - { - cd->my_errno = YAZ_ICONV_E2BIG; - return (size_t) (-1); - } - if (cd->write_marc8_ncr) - { - yaz_snprintf(*outbuf, 9, "&#x%04x;", y); - (*outbytesleft) -= 8; - (*outbuf) += 8; - } - else - { - size_t out_no = 0; - unsigned char byte; - - byte = (unsigned char )((y>>16) & 0xff); - if (byte) - (*outbuf)[out_no++] = byte; - byte = (unsigned char)((y>>8) & 0xff); - if (byte) - (*outbuf)[out_no++] = byte; - byte = (unsigned char )(y & 0xff); - if (byte) - (*outbuf)[out_no++] = byte; - *outbuf += out_no; - (*outbytesleft) -= out_no; - } - - if (cd->write_marc8_second_half_char) - { - *(*outbuf)++ = cd->write_marc8_second_half_char; - (*outbytesleft)--; - } - - cd->write_marc8_last = 0; - cd->write_marc8_ncr = 0; - cd->write_marc8_lpage = 0; - cd->write_marc8_second_half_char = 0; - return 0; -} - -static size_t yaz_write_marc8_page_chr(yaz_iconv_t cd, - char **outbuf, size_t *outbytesleft, - const char *page_chr) -{ - const char **old_page_chr = &cd->write_marc8_g0; - /* are we going to a G1-set (such as such as ESC ")!E") */ - if (page_chr && page_chr[1] == ')') - old_page_chr = &cd->write_marc8_g1; - - if (!*old_page_chr || strcmp(page_chr, *old_page_chr)) - { - size_t plen = 0; - const char *page_out = page_chr; - - if (*outbytesleft < 8) - { - cd->my_errno = YAZ_ICONV_E2BIG; - - return (size_t) (-1); - } - - if (*old_page_chr) - { - if (!strcmp(*old_page_chr, ESC "p") - || !strcmp(*old_page_chr, ESC "g") - || !strcmp(*old_page_chr, ESC "b")) - { - page_out = ESC "s"; - /* Technique 1 leave */ - if (strcmp(page_chr, ESC "(B")) /* Not going ASCII page? */ - { - /* Must leave script + enter new page */ - plen = strlen(page_out); - memcpy(*outbuf, page_out, plen); - (*outbuf) += plen; - (*outbytesleft) -= plen; - page_out = ESC "(B"; - } - } - } - *old_page_chr = page_chr; - plen = strlen(page_out); - memcpy(*outbuf, page_out, plen); - (*outbuf) += plen; - (*outbytesleft) -= plen; - } - return 0; -} - - -static size_t yaz_write_marc8_2(yaz_iconv_t cd, unsigned long x, - char **outbuf, size_t *outbytesleft, - int loss_mode) -{ - int comb = 0; - int enable_ncr = 0; - const char *page_chr = 0; - unsigned long y = lookup_marc8(cd, x, &comb, &page_chr); - - if (!y) - { - if (loss_mode == 0 || cd->my_errno != YAZ_ICONV_EILSEQ) - return (size_t) (-1); - page_chr = ESC "(B"; - if (loss_mode == 1) - y = '|'; - else - { - y = x; - enable_ncr = 1; - } - } - - if (comb) - { - if (page_chr) - { - size_t r = yaz_write_marc8_page_chr(cd, outbuf, outbytesleft, - page_chr); - if (r) - return r; - } - if (x == 0x0361) - cd->write_marc8_second_half_char = 0xEC; - else if (x == 0x0360) - cd->write_marc8_second_half_char = 0xFB; - - if (*outbytesleft <= 1) - { - cd->my_errno = YAZ_ICONV_E2BIG; - return (size_t) (-1); - } - *(*outbuf)++ = y; - (*outbytesleft)--; - } - else - { - size_t r = flush_combos(cd, outbuf, outbytesleft); - if (r) - return r; - - cd->write_marc8_last = y; - cd->write_marc8_lpage = page_chr; - cd->write_marc8_ncr = enable_ncr; - } - return 0; -} - -static size_t yaz_flush_marc8(yaz_iconv_t cd, - char **outbuf, size_t *outbytesleft) -{ - size_t r = flush_combos(cd, outbuf, outbytesleft); - if (r) - return r; - cd->write_marc8_g1 = 0; - return yaz_write_marc8_page_chr(cd, outbuf, outbytesleft, ESC "(B"); -} - -static size_t yaz_write_marc8_generic(yaz_iconv_t cd, unsigned long x, - char **outbuf, size_t *outbytesleft, - int loss_mode); - -static size_t yaz_write_marc8_normal(yaz_iconv_t cd, unsigned long x, - char **outbuf, size_t *outbytesleft) -{ - return yaz_write_marc8_generic(cd, x, outbuf, outbytesleft, 0); -} - -static size_t yaz_write_marc8_lossy(yaz_iconv_t cd, unsigned long x, - char **outbuf, size_t *outbytesleft) -{ - return yaz_write_marc8_generic(cd, x, outbuf, outbytesleft, 1); -} - -static size_t yaz_write_marc8_lossless(yaz_iconv_t cd, unsigned long x, - char **outbuf, size_t *outbytesleft) -{ - return yaz_write_marc8_generic(cd, x, outbuf, outbytesleft, 2); -} - -static size_t yaz_write_marc8_generic(yaz_iconv_t cd, unsigned long x, - char **outbuf, size_t *outbytesleft, - int loss_mode) +int yaz_iconv_isbuiltin(yaz_iconv_t cd) { - if (x >= 0xc0 && x <= 0xff) /* optimization. min and max .y values */ - { - int i; - for (i = 0; latin1_comb[i].x1; i++) - { - if (x == latin1_comb[i].y) - { - size_t r ; - /* save the output pointers .. */ - char *outbuf0 = *outbuf; - size_t outbytesleft0 = *outbytesleft; - int last_ch = cd->write_marc8_last; - int ncr = cd->write_marc8_ncr; - const char *lpage = cd->write_marc8_lpage; - - r = yaz_write_marc8_2(cd, latin1_comb[i].x1, - outbuf, outbytesleft, loss_mode); - if (r) - return r; - r = yaz_write_marc8_2(cd, latin1_comb[i].x2, - outbuf, outbytesleft, loss_mode); - if (r && cd->my_errno == YAZ_ICONV_E2BIG) - { - /* not enough room. reset output to original values */ - *outbuf = outbuf0; - *outbytesleft = outbytesleft0; - cd->write_marc8_last = last_ch; - cd->write_marc8_ncr = ncr; - cd->write_marc8_lpage = lpage; - } - return r; - } - } - } - return yaz_write_marc8_2(cd, x, outbuf, outbytesleft, loss_mode); + return cd->read_handle && cd->encoder.write_handle; } -#if HAVE_WCHAR_H -static size_t yaz_write_wchar_t(yaz_iconv_t cd, unsigned long x, - char **outbuf, size_t *outbytesleft) +static int prepare_encoders(yaz_iconv_t cd, const char *tocode) { - unsigned char *outp = (unsigned char *) *outbuf; - - if (*outbytesleft >= sizeof(wchar_t)) - { - wchar_t wch = x; - memcpy(outp, &wch, sizeof(wch)); - outp += sizeof(wch); - (*outbytesleft) -= sizeof(wch); - } - else - { - cd->my_errno = YAZ_ICONV_E2BIG; - return (size_t)(-1); - } - *outbuf = (char *) outp; + if (yaz_marc8_encoder(tocode, &cd->encoder)) + return 1; + if (yaz_utf8_encoder(tocode, &cd->encoder)) + return 1; + if (yaz_ucs4_encoder(tocode, &cd->encoder)) + return 1; + if (yaz_iso_8859_1_encoder(tocode, &cd->encoder)) + return 1; + if (yaz_iso_5428_encoder(tocode, &cd->encoder)) + return 1; + if (yaz_advancegreek_encoder(tocode, &cd->encoder)) + return 1; + if (yaz_wchar_encoder(tocode, &cd->encoder)) + return 1; return 0; } -#endif - -int yaz_iconv_isbuiltin(yaz_iconv_t cd) -{ - return cd->read_handle && cd->write_handle; -} yaz_iconv_t yaz_iconv_open(const char *tocode, const char *fromcode) { yaz_iconv_t cd = (yaz_iconv_t) xmalloc (sizeof(*cd)); - cd->write_handle = 0; + cd->encoder.data = 0; + cd->encoder.write_handle = 0; + cd->encoder.flush_handle = 0; + cd->encoder.init_handle = 0; + cd->encoder.destroy_handle = 0; + cd->read_handle = 0; cd->init_handle = 0; - cd->flush_handle = 0; cd->my_errno = YAZ_ICONV_UNKNOWN; /* a useful hack: if fromcode has leading @, @@ -884,73 +356,29 @@ yaz_iconv_t yaz_iconv_open(const char *tocode, const char *fromcode) else if (!yaz_matchstr(fromcode, "WCHAR_T")) cd->read_handle = yaz_read_wchar_t; #endif - - if (!yaz_matchstr(tocode, "UTF8")) - cd->write_handle = yaz_write_UTF8; - else if (!yaz_matchstr(tocode, "ISO88591")) - { - cd->write_handle = yaz_write_ISO8859_1; - cd->flush_handle = yaz_flush_ISO8859_1; - } - else if (!yaz_matchstr(tocode, "UCS4")) - cd->write_handle = yaz_write_UCS4; - else if (!yaz_matchstr(tocode, "UCS4LE")) - cd->write_handle = yaz_write_UCS4LE; - else if (!yaz_matchstr(tocode, "MARC8")) - { - cd->write_handle = yaz_write_marc8_normal; - cd->flush_handle = yaz_flush_marc8; - } - else if (!yaz_matchstr(tocode, "MARC8s")) - { - cd->write_handle = yaz_write_marc8_normal; - cd->flush_handle = yaz_flush_marc8; - } - else if (!yaz_matchstr(tocode, "MARC8lossy")) - { - cd->write_handle = yaz_write_marc8_lossy; - cd->flush_handle = yaz_flush_marc8; - } - else if (!yaz_matchstr(tocode, "MARC8lossless")) - { - cd->write_handle = yaz_write_marc8_lossless; - cd->flush_handle = yaz_flush_marc8; - } - else if (!yaz_matchstr(tocode, "advancegreek")) - { - cd->write_handle = yaz_write_advancegreek; - } - else if (!yaz_matchstr(tocode, "iso54281984")) - { - cd->write_handle = yaz_write_iso5428_1984; - } - else if (!yaz_matchstr(tocode, "iso5428:1984")) - { - cd->write_handle = yaz_write_iso5428_1984; - } -#if HAVE_WCHAR_H - else if (!yaz_matchstr(tocode, "WCHAR_T")) - cd->write_handle = yaz_write_wchar_t; -#endif + prepare_encoders(cd, tocode); } + if (cd->read_handle && cd->encoder.write_handle) + { #if HAVE_ICONV_H - cd->iconv_cd = 0; - if (!cd->read_handle || !cd->write_handle) + cd->iconv_cd = 0; +#endif + ; + } + else { +#if HAVE_ICONV_H cd->iconv_cd = iconv_open(tocode, fromcode); if (cd->iconv_cd == (iconv_t) (-1)) { - xfree(cd); + yaz_iconv_close(cd); return 0; } - } #else - if (!cd->read_handle || !cd->write_handle) - { - xfree(cd); + yaz_iconv_close(cd); return 0; - } #endif + } cd->init_flag = 1; return cd; } @@ -997,21 +425,13 @@ size_t yaz_iconv(yaz_iconv_t cd, char **inbuf, size_t *inbytesleft, cd->g1_mode = 'E'; cd->comb_offset = cd->comb_size = 0; - cd->compose_char = 0; - - cd->write_marc8_second_half_char = 0; - cd->write_marc8_last = 0; - cd->write_marc8_ncr = 0; - cd->write_marc8_lpage = 0; - cd->write_marc8_g0 = ESC "(B"; - cd->write_marc8_g1 = 0; + + if (cd->encoder.init_handle) + (*cd->encoder.init_handle)(&cd->encoder); cd->unget_x = 0; cd->no_read_x = 0; - } - if (cd->init_flag) - { if (cd->init_handle && inbuf && *inbuf) { size_t no_read = 0; @@ -1035,9 +455,11 @@ size_t yaz_iconv(yaz_iconv_t cd, char **inbuf, size_t *inbytesleft, if (outbuf && *outbuf) { if (cd->unget_x) - r = (*cd->write_handle)(cd, cd->unget_x, outbuf, outbytesleft); - if (cd->flush_handle) - r = (*cd->flush_handle)(cd, outbuf, outbytesleft); + r = (*cd->encoder.write_handle)(cd, &cd->encoder, + cd->unget_x, outbuf, outbytesleft); + if (cd->encoder.flush_handle) + r = (*cd->encoder.flush_handle)(cd, &cd->encoder, + outbuf, outbytesleft); } if (r == 0) cd->init_flag = 1; @@ -1071,7 +493,8 @@ size_t yaz_iconv(yaz_iconv_t cd, char **inbuf, size_t *inbytesleft, } if (x) { - r = (*cd->write_handle)(cd, x, outbuf, outbytesleft); + r = (*cd->encoder.write_handle)(cd, &cd->encoder, + x, outbuf, outbytesleft); if (r) { /* unable to write it. save it because read_handle cannot @@ -1102,6 +525,8 @@ int yaz_iconv_close(yaz_iconv_t cd) if (cd->iconv_cd) iconv_close(cd->iconv_cd); #endif + if (cd->encoder.destroy_handle) + (*cd->encoder.destroy_handle)(&cd->encoder); xfree(cd); return 0; }