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/* This file is part of the YAZ toolkit.
* Copyright (C) 1995-2008 Index Data
* See the file LICENSE for details.
*/
/**
* \file marcdisp.c
* \brief Implements MARC conversion utilities
*/
#if HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef WIN32
#include <windows.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <yaz/marcdisp.h>
#include <yaz/wrbuf.h>
#include <yaz/yaz-util.h>
#include <yaz/nmem_xml.h>
#include <yaz/snprintf.h>
#if YAZ_HAVE_XML2
#include <libxml/parser.h>
#include <libxml/tree.h>
#endif
enum yaz_collection_state {
no_collection,
collection_first,
collection_second
};
/** \brief node types for yaz_marc_node */
enum YAZ_MARC_NODE_TYPE
{
YAZ_MARC_DATAFIELD,
YAZ_MARC_CONTROLFIELD,
YAZ_MARC_COMMENT,
YAZ_MARC_LEADER
};
/** \brief represets a data field */
struct yaz_marc_datafield {
char *tag;
char *indicator;
struct yaz_marc_subfield *subfields;
};
/** \brief represents a control field */
struct yaz_marc_controlfield {
char *tag;
char *data;
};
/** \brief a comment node */
struct yaz_marc_comment {
char *comment;
};
/** \brief MARC node */
struct yaz_marc_node {
enum YAZ_MARC_NODE_TYPE which;
union {
struct yaz_marc_datafield datafield;
struct yaz_marc_controlfield controlfield;
char *comment;
char *leader;
} u;
struct yaz_marc_node *next;
};
/** \brief represents a subfield */
struct yaz_marc_subfield {
char *code_data;
struct yaz_marc_subfield *next;
};
/** \brief the internals of a yaz_marc_t handle */
struct yaz_marc_t_ {
WRBUF m_wr;
NMEM nmem;
int xml;
int debug;
int write_using_libxml2;
enum yaz_collection_state enable_collection;
yaz_iconv_t iconv_cd;
char subfield_str[8];
char endline_str[8];
char *leader_spec;
struct yaz_marc_node *nodes;
struct yaz_marc_node **nodes_pp;
struct yaz_marc_subfield **subfield_pp;
};
yaz_marc_t yaz_marc_create(void)
{
yaz_marc_t mt = (yaz_marc_t) xmalloc(sizeof(*mt));
mt->xml = YAZ_MARC_LINE;
mt->debug = 0;
mt->write_using_libxml2 = 0;
mt->enable_collection = no_collection;
mt->m_wr = wrbuf_alloc();
mt->iconv_cd = 0;
mt->leader_spec = 0;
strcpy(mt->subfield_str, " $");
strcpy(mt->endline_str, "\n");
mt->nmem = nmem_create();
yaz_marc_reset(mt);
return mt;
}
void yaz_marc_destroy(yaz_marc_t mt)
{
if (!mt)
return ;
nmem_destroy(mt->nmem);
wrbuf_destroy(mt->m_wr);
xfree(mt->leader_spec);
xfree(mt);
}
NMEM yaz_marc_get_nmem(yaz_marc_t mt)
{
return mt->nmem;
}
static void marc_iconv_reset(yaz_marc_t mt, WRBUF wr)
{
wrbuf_iconv_reset(wr, mt->iconv_cd);
}
static int marc_exec_leader(const char *leader_spec, char *leader,
size_t size);
static struct yaz_marc_node *yaz_marc_add_node(yaz_marc_t mt)
{
struct yaz_marc_node *n = (struct yaz_marc_node *)
nmem_malloc(mt->nmem, sizeof(*n));
n->next = 0;
*mt->nodes_pp = n;
mt->nodes_pp = &n->next;
return n;
}
#if YAZ_HAVE_XML2
void yaz_marc_add_controlfield_xml(yaz_marc_t mt, const xmlNode *ptr_tag,
const xmlNode *ptr_data)
{
struct yaz_marc_node *n = yaz_marc_add_node(mt);
n->which = YAZ_MARC_CONTROLFIELD;
n->u.controlfield.tag = nmem_text_node_cdata(ptr_tag, mt->nmem);
n->u.controlfield.data = nmem_text_node_cdata(ptr_data, mt->nmem);
}
#endif
void yaz_marc_add_comment(yaz_marc_t mt, char *comment)
{
struct yaz_marc_node *n = yaz_marc_add_node(mt);
n->which = YAZ_MARC_COMMENT;
n->u.comment = nmem_strdup(mt->nmem, comment);
}
void yaz_marc_cprintf(yaz_marc_t mt, const char *fmt, ...)
{
va_list ap;
char buf[200];
va_start(ap, fmt);
yaz_vsnprintf(buf, sizeof(buf)-1, fmt, ap);
yaz_marc_add_comment(mt, buf);
va_end (ap);
}
int yaz_marc_get_debug(yaz_marc_t mt)
{
return mt->debug;
}
void yaz_marc_add_leader(yaz_marc_t mt, const char *leader, size_t leader_len)
{
struct yaz_marc_node *n = yaz_marc_add_node(mt);
n->which = YAZ_MARC_LEADER;
n->u.leader = nmem_strdupn(mt->nmem, leader, leader_len);
marc_exec_leader(mt->leader_spec, n->u.leader, leader_len);
}
void yaz_marc_add_controlfield(yaz_marc_t mt, const char *tag,
const char *data, size_t data_len)
{
struct yaz_marc_node *n = yaz_marc_add_node(mt);
n->which = YAZ_MARC_CONTROLFIELD;
n->u.controlfield.tag = nmem_strdup(mt->nmem, tag);
n->u.controlfield.data = nmem_strdupn(mt->nmem, data, data_len);
if (mt->debug)
{
size_t i;
char msg[80];
sprintf(msg, "controlfield:");
for (i = 0; i < 16 && i < data_len; i++)
sprintf(msg + strlen(msg), " %02X", data[i] & 0xff);
if (i < data_len)
sprintf(msg + strlen(msg), " ..");
yaz_marc_add_comment(mt, msg);
}
}
void yaz_marc_add_datafield(yaz_marc_t mt, const char *tag,
const char *indicator, size_t indicator_len)
{
struct yaz_marc_node *n = yaz_marc_add_node(mt);
n->which = YAZ_MARC_DATAFIELD;
n->u.datafield.tag = nmem_strdup(mt->nmem, tag);
n->u.datafield.indicator =
nmem_strdupn(mt->nmem, indicator, indicator_len);
n->u.datafield.subfields = 0;
/* make subfield_pp the current (last one) */
mt->subfield_pp = &n->u.datafield.subfields;
}
#if YAZ_HAVE_XML2
void yaz_marc_add_datafield_xml(yaz_marc_t mt, const xmlNode *ptr_tag,
const char *indicator, size_t indicator_len)
{
struct yaz_marc_node *n = yaz_marc_add_node(mt);
n->which = YAZ_MARC_DATAFIELD;
n->u.datafield.tag = nmem_text_node_cdata(ptr_tag, mt->nmem);
n->u.datafield.indicator =
nmem_strdupn(mt->nmem, indicator, indicator_len);
n->u.datafield.subfields = 0;
/* make subfield_pp the current (last one) */
mt->subfield_pp = &n->u.datafield.subfields;
}
#endif
void yaz_marc_add_subfield(yaz_marc_t mt,
const char *code_data, size_t code_data_len)
{
if (mt->debug)
{
size_t i;
char msg[80];
sprintf(msg, "subfield:");
for (i = 0; i < 16 && i < code_data_len; i++)
sprintf(msg + strlen(msg), " %02X", code_data[i] & 0xff);
if (i < code_data_len)
sprintf(msg + strlen(msg), " ..");
yaz_marc_add_comment(mt, msg);
}
if (mt->subfield_pp)
{
struct yaz_marc_subfield *n = (struct yaz_marc_subfield *)
nmem_malloc(mt->nmem, sizeof(*n));
n->code_data = nmem_strdupn(mt->nmem, code_data, code_data_len);
n->next = 0;
/* mark subfield_pp to point to this one, so we append here next */
*mt->subfield_pp = n;
mt->subfield_pp = &n->next;
}
}
int atoi_n_check(const char *buf, int size, int *val)
{
int i;
for (i = 0; i < size; i++)
if (!isdigit(i[(const unsigned char *) buf]))
return 0;
*val = atoi_n(buf, size);
return 1;
}
void yaz_marc_set_leader(yaz_marc_t mt, const char *leader_c,
int *indicator_length,
int *identifier_length,
int *base_address,
int *length_data_entry,
int *length_starting,
int *length_implementation)
{
char leader[24];
memcpy(leader, leader_c, 24);
if (!atoi_n_check(leader+10, 1, indicator_length))
{
yaz_marc_cprintf(mt,
"Indicator length at offset 10 should hold a digit."
" Assuming 2");
leader[10] = '2';
*indicator_length = 2;
}
if (!atoi_n_check(leader+11, 1, identifier_length))
{
yaz_marc_cprintf(mt,
"Identifier length at offset 11 should hold a digit."
" Assuming 2");
leader[11] = '2';
*identifier_length = 2;
}
if (!atoi_n_check(leader+12, 5, base_address))
{
yaz_marc_cprintf(mt,
"Base address at offsets 12..16 should hold a number."
" Assuming 0");
*base_address = 0;
}
if (!atoi_n_check(leader+20, 1, length_data_entry))
{
yaz_marc_cprintf(mt,
"Length data entry at offset 20 should hold a digit."
" Assuming 4");
*length_data_entry = 4;
leader[20] = '4';
}
if (!atoi_n_check(leader+21, 1, length_starting))
{
yaz_marc_cprintf(mt,
"Length starting at offset 21 should hold a digit."
" Assuming 5");
*length_starting = 5;
leader[21] = '5';
}
if (!atoi_n_check(leader+22, 1, length_implementation))
{
yaz_marc_cprintf(mt,
"Length implementation at offset 22 should hold a digit."
" Assuming 0");
*length_implementation = 0;
leader[22] = '0';
}
if (mt->debug)
{
yaz_marc_cprintf(mt, "Indicator length %5d", *indicator_length);
yaz_marc_cprintf(mt, "Identifier length %5d", *identifier_length);
yaz_marc_cprintf(mt, "Base address %5d", *base_address);
yaz_marc_cprintf(mt, "Length data entry %5d", *length_data_entry);
yaz_marc_cprintf(mt, "Length starting %5d", *length_starting);
yaz_marc_cprintf(mt, "Length implementation %5d", *length_implementation);
}
yaz_marc_add_leader(mt, leader, 24);
}
void yaz_marc_subfield_str(yaz_marc_t mt, const char *s)
{
strncpy(mt->subfield_str, s, sizeof(mt->subfield_str)-1);
mt->subfield_str[sizeof(mt->subfield_str)-1] = '\0';
}
void yaz_marc_endline_str(yaz_marc_t mt, const char *s)
{
strncpy(mt->endline_str, s, sizeof(mt->endline_str)-1);
mt->endline_str[sizeof(mt->endline_str)-1] = '\0';
}
/* try to guess how many bytes the identifier really is! */
static size_t cdata_one_character(yaz_marc_t mt, const char *buf)
{
if (mt->iconv_cd)
{
size_t i;
for (i = 1; i<5; i++)
{
char outbuf[12];
size_t outbytesleft = sizeof(outbuf);
char *outp = outbuf;
const char *inp = buf;
size_t inbytesleft = i;
size_t r = yaz_iconv(mt->iconv_cd, (char**) &inp, &inbytesleft,
&outp, &outbytesleft);
if (r != (size_t) (-1))
return i; /* got a complete sequence */
}
return 1; /* giving up */
}
return 1; /* we don't know */
}
void yaz_marc_reset(yaz_marc_t mt)
{
nmem_reset(mt->nmem);
mt->nodes = 0;
mt->nodes_pp = &mt->nodes;
mt->subfield_pp = 0;
}
int yaz_marc_write_check(yaz_marc_t mt, WRBUF wr)
{
struct yaz_marc_node *n;
int identifier_length;
const char *leader = 0;
for (n = mt->nodes; n; n = n->next)
if (n->which == YAZ_MARC_LEADER)
{
leader = n->u.leader;
break;
}
if (!leader)
return -1;
if (!atoi_n_check(leader+11, 1, &identifier_length))
return -1;
for (n = mt->nodes; n; n = n->next)
{
switch(n->which)
{
case YAZ_MARC_COMMENT:
wrbuf_iconv_write(wr, mt->iconv_cd,
n->u.comment, strlen(n->u.comment));
wrbuf_puts(wr, ")\n");
break;
default:
break;
}
}
return 0;
}
int yaz_marc_write_line(yaz_marc_t mt, WRBUF wr)
{
struct yaz_marc_node *n;
int identifier_length;
const char *leader = 0;
for (n = mt->nodes; n; n = n->next)
if (n->which == YAZ_MARC_LEADER)
{
leader = n->u.leader;
break;
}
if (!leader)
return -1;
if (!atoi_n_check(leader+11, 1, &identifier_length))
return -1;
for (n = mt->nodes; n; n = n->next)
{
struct yaz_marc_subfield *s;
switch(n->which)
{
case YAZ_MARC_DATAFIELD:
wrbuf_printf(wr, "%s %s", n->u.datafield.tag,
n->u.datafield.indicator);
for (s = n->u.datafield.subfields; s; s = s->next)
{
/* if identifier length is 2 (most MARCs),
the code is a single character .. However we've
seen multibyte codes, so see how big it really is */
size_t using_code_len =
(identifier_length != 2) ? identifier_length - 1
:
cdata_one_character(mt, s->code_data);
wrbuf_puts (wr, mt->subfield_str);
wrbuf_iconv_write(wr, mt->iconv_cd, s->code_data,
using_code_len);
wrbuf_iconv_puts(wr, mt->iconv_cd, " ");
wrbuf_iconv_puts(wr, mt->iconv_cd,
s->code_data + using_code_len);
marc_iconv_reset(mt, wr);
}
wrbuf_puts (wr, mt->endline_str);
break;
case YAZ_MARC_CONTROLFIELD:
wrbuf_printf(wr, "%s", n->u.controlfield.tag);
wrbuf_iconv_puts(wr, mt->iconv_cd, " ");
wrbuf_iconv_puts(wr, mt->iconv_cd, n->u.controlfield.data);
marc_iconv_reset(mt, wr);
wrbuf_puts (wr, mt->endline_str);
break;
case YAZ_MARC_COMMENT:
wrbuf_puts(wr, "(");
wrbuf_iconv_write(wr, mt->iconv_cd,
n->u.comment, strlen(n->u.comment));
marc_iconv_reset(mt, wr);
wrbuf_puts(wr, ")\n");
break;
case YAZ_MARC_LEADER:
wrbuf_printf(wr, "%s\n", n->u.leader);
}
}
wrbuf_puts(wr, "\n");
return 0;
}
int yaz_marc_write_trailer(yaz_marc_t mt, WRBUF wr)
{
if (mt->enable_collection == collection_second)
{
switch(mt->xml)
{
case YAZ_MARC_MARCXML:
wrbuf_printf(wr, "</collection>\n");
break;
case YAZ_MARC_XCHANGE:
wrbuf_printf(wr, "</collection>\n");
break;
}
}
return 0;
}
void yaz_marc_enable_collection(yaz_marc_t mt)
{
mt->enable_collection = collection_first;
}
int yaz_marc_write_mode(yaz_marc_t mt, WRBUF wr)
{
switch(mt->xml)
{
case YAZ_MARC_LINE:
return yaz_marc_write_line(mt, wr);
case YAZ_MARC_MARCXML:
return yaz_marc_write_marcxml(mt, wr);
case YAZ_MARC_XCHANGE:
return yaz_marc_write_marcxchange(mt, wr, 0, 0); /* no format, type */
case YAZ_MARC_ISO2709:
return yaz_marc_write_iso2709(mt, wr);
case YAZ_MARC_CHECK:
return yaz_marc_write_check(mt, wr);
}
return -1;
}
/** \brief common MARC XML/Xchange writer
\param mt handle
\param wr WRBUF output
\param ns XMLNS for the elements
\param format record format (e.g. "MARC21")
\param type record type (e.g. "Bibliographic")
*/
static int yaz_marc_write_marcxml_ns1(yaz_marc_t mt, WRBUF wr,
const char *ns,
const char *format,
const char *type)
{
struct yaz_marc_node *n;
int identifier_length;
const char *leader = 0;
for (n = mt->nodes; n; n = n->next)
if (n->which == YAZ_MARC_LEADER)
{
leader = n->u.leader;
break;
}
if (!leader)
return -1;
if (!atoi_n_check(leader+11, 1, &identifier_length))
return -1;
if (mt->enable_collection != no_collection)
{
if (mt->enable_collection == collection_first)
wrbuf_printf(wr, "<collection xmlns=\"%s\">\n", ns);
mt->enable_collection = collection_second;
wrbuf_printf(wr, "<record");
}
else
{
wrbuf_printf(wr, "<record xmlns=\"%s\"", ns);
}
if (format)
wrbuf_printf(wr, " format=\"%.80s\"", format);
if (type)
wrbuf_printf(wr, " type=\"%.80s\"", type);
wrbuf_printf(wr, ">\n");
for (n = mt->nodes; n; n = n->next)
{
struct yaz_marc_subfield *s;
switch(n->which)
{
case YAZ_MARC_DATAFIELD:
wrbuf_printf(wr, " <datafield tag=\"");
wrbuf_iconv_write_cdata(wr, mt->iconv_cd, n->u.datafield.tag,
strlen(n->u.datafield.tag));
wrbuf_printf(wr, "\"");
if (n->u.datafield.indicator)
{
int i;
for (i = 0; n->u.datafield.indicator[i]; i++)
{
wrbuf_printf(wr, " ind%d=\"", i+1);
wrbuf_iconv_write_cdata(wr, mt->iconv_cd,
n->u.datafield.indicator+i, 1);
wrbuf_iconv_puts(wr, mt->iconv_cd, "\"");
}
}
wrbuf_printf(wr, ">\n");
for (s = n->u.datafield.subfields; s; s = s->next)
{
/* if identifier length is 2 (most MARCs),
the code is a single character .. However we've
seen multibyte codes, so see how big it really is */
size_t using_code_len =
(identifier_length != 2) ? identifier_length - 1
:
cdata_one_character(mt, s->code_data);
wrbuf_iconv_puts(wr, mt->iconv_cd, " <subfield code=\"");
wrbuf_iconv_write_cdata(wr, mt->iconv_cd,
s->code_data, using_code_len);
wrbuf_iconv_puts(wr, mt->iconv_cd, "\">");
wrbuf_iconv_write_cdata(wr, mt->iconv_cd,
s->code_data + using_code_len,
strlen(s->code_data + using_code_len));
marc_iconv_reset(mt, wr);
wrbuf_iconv_puts(wr, mt->iconv_cd, "</subfield>");
wrbuf_puts(wr, "\n");
}
wrbuf_printf(wr, " </datafield>\n");
break;
case YAZ_MARC_CONTROLFIELD:
wrbuf_printf(wr, " <controlfield tag=\"");
wrbuf_iconv_write_cdata(wr, mt->iconv_cd, n->u.controlfield.tag,
strlen(n->u.controlfield.tag));
wrbuf_iconv_puts(wr, mt->iconv_cd, "\">");
wrbuf_iconv_write_cdata(wr, mt->iconv_cd,
n->u.controlfield.data,
strlen(n->u.controlfield.data));
marc_iconv_reset(mt, wr);
wrbuf_iconv_puts(wr, mt->iconv_cd, "</controlfield>");
wrbuf_puts(wr, "\n");
break;
case YAZ_MARC_COMMENT:
wrbuf_printf(wr, "<!-- ");
wrbuf_puts(wr, n->u.comment);
wrbuf_printf(wr, " -->\n");
break;
case YAZ_MARC_LEADER:
wrbuf_printf(wr, " <leader>");
wrbuf_iconv_write_cdata(wr,
0 /* no charset conversion for leader */,
n->u.leader, strlen(n->u.leader));
wrbuf_printf(wr, "</leader>\n");
}
}
wrbuf_puts(wr, "</record>\n");
return 0;
}
static int yaz_marc_write_marcxml_ns(yaz_marc_t mt, WRBUF wr,
const char *ns,
const char *format,
const char *type)
{
if (mt->write_using_libxml2)
{
#if YAZ_HAVE_XML2
int ret;
xmlNode *root_ptr;
ret = yaz_marc_write_xml(mt, &root_ptr, ns, format, type);
if (ret == 0)
{
xmlChar *buf_out;
xmlDocPtr doc = xmlNewDoc(BAD_CAST "1.0");
int len_out;
xmlDocSetRootElement(doc, root_ptr);
xmlDocDumpMemory(doc, &buf_out, &len_out);
wrbuf_write(wr, (const char *) buf_out, len_out);
wrbuf_puts(wr, "");
xmlFree(buf_out);
xmlFreeDoc(doc);
}
return ret;
#else
return -1;
#endif
}
else
return yaz_marc_write_marcxml_ns1(mt, wr, ns, format, type);
}
int yaz_marc_write_marcxml(yaz_marc_t mt, WRBUF wr)
{
/* set leader 09 to 'a' for UNICODE */
/* http://www.loc.gov/marc/bibliographic/ecbdldrd.html#mrcblea */
if (!mt->leader_spec)
yaz_marc_modify_leader(mt, 9, "a");
return yaz_marc_write_marcxml_ns(mt, wr, "http://www.loc.gov/MARC21/slim",
0, 0);
}
int yaz_marc_write_marcxchange(yaz_marc_t mt, WRBUF wr,
const char *format,
const char *type)
{
return yaz_marc_write_marcxml_ns(mt, wr,
"http://www.bs.dk/standards/MarcXchange",
0, 0);
}
int yaz_marc_write_xml(yaz_marc_t mt, xmlNode **root_ptr,
const char *ns,
const char *format,
const char *type)
{
#if YAZ_HAVE_XML2
struct yaz_marc_node *n;
int identifier_length;
const char *leader = 0;
xmlNode *record_ptr;
xmlNsPtr ns_record;
WRBUF wr_cdata = 0;
for (n = mt->nodes; n; n = n->next)
if (n->which == YAZ_MARC_LEADER)
{
leader = n->u.leader;
break;
}
if (!leader)
return -1;
if (!atoi_n_check(leader+11, 1, &identifier_length))
return -1;
wr_cdata = wrbuf_alloc();
record_ptr = xmlNewNode(0, BAD_CAST "record");
*root_ptr = record_ptr;
ns_record = xmlNewNs(record_ptr, BAD_CAST ns, 0);
xmlSetNs(record_ptr, ns_record);
if (format)
xmlNewProp(record_ptr, BAD_CAST "format", BAD_CAST format);
if (type)
xmlNewProp(record_ptr, BAD_CAST "type", BAD_CAST type);
for (n = mt->nodes; n; n = n->next)
{
struct yaz_marc_subfield *s;
xmlNode *ptr;
switch(n->which)
{
case YAZ_MARC_DATAFIELD:
ptr = xmlNewChild(record_ptr, ns_record, BAD_CAST "datafield", 0);
xmlNewProp(ptr, BAD_CAST "tag", BAD_CAST n->u.datafield.tag);
if (n->u.datafield.indicator)
{
int i;
for (i = 0; n->u.datafield.indicator[i]; i++)
{
char ind_str[6];
char ind_val[2];
sprintf(ind_str, "ind%d", i+1);
ind_val[0] = n->u.datafield.indicator[i];
ind_val[1] = '\0';
xmlNewProp(ptr, BAD_CAST ind_str, BAD_CAST ind_val);
}
}
for (s = n->u.datafield.subfields; s; s = s->next)
{
xmlNode *ptr_subfield;
/* if identifier length is 2 (most MARCs),
the code is a single character .. However we've
seen multibyte codes, so see how big it really is */
size_t using_code_len =
(identifier_length != 2) ? identifier_length - 1
:
cdata_one_character(mt, s->code_data);
wrbuf_rewind(wr_cdata);
wrbuf_iconv_puts(wr_cdata, mt->iconv_cd,
s->code_data + using_code_len);
marc_iconv_reset(mt, wr_cdata);
ptr_subfield = xmlNewTextChild(
ptr, ns_record,
BAD_CAST "subfield", BAD_CAST wrbuf_cstr(wr_cdata));
wrbuf_rewind(wr_cdata);
wrbuf_iconv_write(wr_cdata, mt->iconv_cd,
s->code_data, using_code_len);
xmlNewProp(ptr_subfield, BAD_CAST "code",
BAD_CAST wrbuf_cstr(wr_cdata));
}
break;
case YAZ_MARC_CONTROLFIELD:
wrbuf_rewind(wr_cdata);
wrbuf_iconv_puts(wr_cdata, mt->iconv_cd, n->u.controlfield.data);
marc_iconv_reset(mt, wr_cdata);
ptr = xmlNewTextChild(record_ptr, ns_record,
BAD_CAST "controlfield",
BAD_CAST wrbuf_cstr(wr_cdata));
xmlNewProp(ptr, BAD_CAST "tag", BAD_CAST n->u.controlfield.tag);
break;
case YAZ_MARC_COMMENT:
ptr = xmlNewComment(BAD_CAST n->u.comment);
xmlAddChild(record_ptr, ptr);
break;
case YAZ_MARC_LEADER:
xmlNewTextChild(record_ptr, ns_record, BAD_CAST "leader",
BAD_CAST n->u.leader);
break;
}
}
wrbuf_destroy(wr_cdata);
return 0;
#else
return -1;
#endif
}
int yaz_marc_write_iso2709(yaz_marc_t mt, WRBUF wr)
{
struct yaz_marc_node *n;
int indicator_length;
int identifier_length;
int length_data_entry;
int length_starting;
int length_implementation;
int data_offset = 0;
const char *leader = 0;
WRBUF wr_dir, wr_head, wr_data_tmp;
int base_address;
for (n = mt->nodes; n; n = n->next)
if (n->which == YAZ_MARC_LEADER)
leader = n->u.leader;
if (!leader)
return -1;
if (!atoi_n_check(leader+10, 1, &indicator_length))
return -1;
if (!atoi_n_check(leader+11, 1, &identifier_length))
return -1;
if (!atoi_n_check(leader+20, 1, &length_data_entry))
return -1;
if (!atoi_n_check(leader+21, 1, &length_starting))
return -1;
if (!atoi_n_check(leader+22, 1, &length_implementation))
return -1;
wr_data_tmp = wrbuf_alloc();
wr_dir = wrbuf_alloc();
for (n = mt->nodes; n; n = n->next)
{
int data_length = 0;
struct yaz_marc_subfield *s;
switch(n->which)
{
case YAZ_MARC_DATAFIELD:
wrbuf_printf(wr_dir, "%.3s", n->u.datafield.tag);
data_length += indicator_length;
wrbuf_rewind(wr_data_tmp);
for (s = n->u.datafield.subfields; s; s = s->next)
{
/* write dummy IDFS + content */
wrbuf_iconv_putchar(wr_data_tmp, mt->iconv_cd, ' ');
wrbuf_iconv_puts(wr_data_tmp, mt->iconv_cd, s->code_data);
marc_iconv_reset(mt, wr_data_tmp);
}
/* write dummy FS (makes MARC-8 to become ASCII) */
wrbuf_iconv_putchar(wr_data_tmp, mt->iconv_cd, ' ');
marc_iconv_reset(mt, wr_data_tmp);
data_length += wrbuf_len(wr_data_tmp);
break;
case YAZ_MARC_CONTROLFIELD:
wrbuf_printf(wr_dir, "%.3s", n->u.controlfield.tag);
wrbuf_rewind(wr_data_tmp);
wrbuf_iconv_puts(wr_data_tmp, mt->iconv_cd,
n->u.controlfield.data);
marc_iconv_reset(mt, wr_data_tmp);
wrbuf_iconv_putchar(wr_data_tmp, mt->iconv_cd, ' ');/* field sep */
marc_iconv_reset(mt, wr_data_tmp);
data_length += wrbuf_len(wr_data_tmp);
break;
case YAZ_MARC_COMMENT:
break;
case YAZ_MARC_LEADER:
break;
}
if (data_length)
{
wrbuf_printf(wr_dir, "%0*d", length_data_entry, data_length);
wrbuf_printf(wr_dir, "%0*d", length_starting, data_offset);
data_offset += data_length;
}
}
/* mark end of directory */
wrbuf_putc(wr_dir, ISO2709_FS);
/* base address of data (comes after leader+directory) */
base_address = 24 + wrbuf_len(wr_dir);
wr_head = wrbuf_alloc();
/* write record length */
wrbuf_printf(wr_head, "%05d", base_address + data_offset + 1);
/* from "original" leader */
wrbuf_write(wr_head, leader+5, 7);
/* base address of data */
wrbuf_printf(wr_head, "%05d", base_address);
/* from "original" leader */
wrbuf_write(wr_head, leader+17, 7);
wrbuf_write(wr, wrbuf_buf(wr_head), 24);
wrbuf_write(wr, wrbuf_buf(wr_dir), wrbuf_len(wr_dir));
wrbuf_destroy(wr_head);
wrbuf_destroy(wr_dir);
wrbuf_destroy(wr_data_tmp);
for (n = mt->nodes; n; n = n->next)
{
struct yaz_marc_subfield *s;
switch(n->which)
{
case YAZ_MARC_DATAFIELD:
wrbuf_printf(wr, "%.*s", indicator_length,
n->u.datafield.indicator);
for (s = n->u.datafield.subfields; s; s = s->next)
{
wrbuf_putc(wr, ISO2709_IDFS);
wrbuf_iconv_puts(wr, mt->iconv_cd, s->code_data);
marc_iconv_reset(mt, wr);
}
wrbuf_putc(wr, ISO2709_FS);
break;
case YAZ_MARC_CONTROLFIELD:
wrbuf_iconv_puts(wr, mt->iconv_cd, n->u.controlfield.data);
marc_iconv_reset(mt, wr);
wrbuf_putc(wr, ISO2709_FS);
break;
case YAZ_MARC_COMMENT:
break;
case YAZ_MARC_LEADER:
break;
}
}
wrbuf_printf(wr, "%c", ISO2709_RS);
return 0;
}
int yaz_marc_decode_wrbuf(yaz_marc_t mt, const char *buf, int bsize, WRBUF wr)
{
int s, r = yaz_marc_read_iso2709(mt, buf, bsize);
if (r <= 0)
return r;
s = yaz_marc_write_mode(mt, wr); /* returns 0 for OK, -1 otherwise */
if (s != 0)
return -1; /* error */
return r; /* OK, return length > 0 */
}
int yaz_marc_decode_buf (yaz_marc_t mt, const char *buf, int bsize,
const char **result, size_t *rsize)
{
int r;
wrbuf_rewind(mt->m_wr);
r = yaz_marc_decode_wrbuf(mt, buf, bsize, mt->m_wr);
if (result)
*result = wrbuf_cstr(mt->m_wr);
if (rsize)
*rsize = wrbuf_len(mt->m_wr);
return r;
}
void yaz_marc_xml(yaz_marc_t mt, int xmlmode)
{
if (mt)
mt->xml = xmlmode;
}
void yaz_marc_debug(yaz_marc_t mt, int level)
{
if (mt)
mt->debug = level;
}
void yaz_marc_iconv(yaz_marc_t mt, yaz_iconv_t cd)
{
mt->iconv_cd = cd;
}
yaz_iconv_t yaz_marc_get_iconv(yaz_marc_t mt)
{
return mt->iconv_cd;
}
void yaz_marc_modify_leader(yaz_marc_t mt, size_t off, const char *str)
{
struct yaz_marc_node *n;
char *leader = 0;
for (n = mt->nodes; n; n = n->next)
if (n->which == YAZ_MARC_LEADER)
{
leader = n->u.leader;
memcpy(leader+off, str, strlen(str));
break;
}
}
int yaz_marc_leader_spec(yaz_marc_t mt, const char *leader_spec)
{
xfree(mt->leader_spec);
mt->leader_spec = 0;
if (leader_spec)
{
char dummy_leader[24];
if (marc_exec_leader(leader_spec, dummy_leader, 24))
return -1;
mt->leader_spec = xstrdup(leader_spec);
}
return 0;
}
static int marc_exec_leader(const char *leader_spec, char *leader, size_t size)
{
const char *cp = leader_spec;
while (cp)
{
char val[21];
int pos;
int no_read = 0, no = 0;
no = sscanf(cp, "%d=%20[^,]%n", &pos, val, &no_read);
if (no < 2 || no_read < 3)
return -1;
if (pos < 0 || pos >= size)
return -1;
if (*val == '\'')
{
const char *vp = strchr(val+1, '\'');
size_t len;
if (!vp)
return -1;
len = vp-val-1;
if (len + pos > size)
return -1;
memcpy(leader + pos, val+1, len);
}
else if (*val >= '0' && *val <= '9')
{
int ch = atoi(val);
leader[pos] = ch;
}
else
return -1;
cp += no_read;
if (*cp != ',')
break;
cp++;
}
return 0;
}
int yaz_marc_decode_formatstr(const char *arg)
{
int mode = -1;
if (!strcmp(arg, "marc"))
mode = YAZ_MARC_ISO2709;
if (!strcmp(arg, "marcxml"))
mode = YAZ_MARC_MARCXML;
if (!strcmp(arg, "marcxchange"))
mode = YAZ_MARC_XCHANGE;
if (!strcmp(arg, "line"))
mode = YAZ_MARC_LINE;
return mode;
}
void yaz_marc_write_using_libxml2(yaz_marc_t mt, int enable)
{
mt->write_using_libxml2 = enable;
}
/*
* Local variables:
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
*/
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