/*
* 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
* 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
#include <yaz/xmalloc.h>
#include <yaz/nmem.h>
-#include <yaz/snprintf.h>
#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;
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;
#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)
{
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 = 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;
}
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 @,
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;
}
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;
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;
}
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
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;
}
projects / yaz-moved-to-github.git / blobdiff