1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2013 Index Data
3 * See the file LICENSE for details.
6 * \file record_render.c
7 * \brief Render Z39.50 records (NamePlusRecord)
17 #include <yaz/marcdisp.h>
18 #include <yaz/record_render.h>
19 #include <yaz/yaz-iconv.h>
20 #include <yaz/proto.h>
21 #include <yaz/oid_db.h>
22 #include <yaz/nmem_xml.h>
23 #include <yaz/base64.h>
26 #include <libxml/xpath.h>
27 #include <libxml/xpathInternals.h>
30 static yaz_iconv_t iconv_create_charset(const char *record_charset,
37 char *to_set = "utf-8";
38 if (record_charset && *record_charset)
40 char *cp = charset_buf;
42 strncpy(charset_buf, record_charset, sizeof(charset_buf)-1);
43 charset_buf[sizeof(charset_buf)-1] = '\0';
46 while (*cp && *cp != ',' && *cp != '/')
50 *cp++ = '\0'; /* terminate from_set1 */
52 while (*cp && *cp != ',')
57 *cp++ = '\0'; /* terminate from_set1 or from_set2 */
65 cd = yaz_iconv_open(to_set, from_set1);
69 *cd2 = yaz_iconv_open(to_set, from_set2);
76 static const char *return_marc_record(WRBUF wrbuf,
79 const char *buf, int sz,
80 const char *record_charset)
82 yaz_iconv_t cd = iconv_create_charset(record_charset, 0);
83 yaz_marc_t mt = yaz_marc_create();
84 const char *ret_string = 0;
87 yaz_marc_iconv(mt, cd);
88 yaz_marc_xml(mt, marc_type);
89 if (yaz_marc_decode_wrbuf(mt, buf, sz, wrbuf) > 0)
91 *len = wrbuf_len(wrbuf);
92 ret_string = wrbuf_cstr(wrbuf);
100 static const char *return_opac_record(WRBUF wrbuf,
103 Z_OPACRecord *opac_rec,
104 const char *record_charset)
107 yaz_iconv_t cd = iconv_create_charset(record_charset, &cd2);
108 yaz_marc_t mt = yaz_marc_create();
111 yaz_marc_iconv(mt, cd);
112 yaz_marc_xml(mt, marc_type);
115 yaz_opac_decode_wrbuf2(mt, opac_rec, wrbuf, cd2);
117 yaz_opac_decode_wrbuf(mt, opac_rec, wrbuf);
119 yaz_marc_destroy(mt);
124 yaz_iconv_close(cd2);
125 *len = wrbuf_len(wrbuf);
126 return wrbuf_cstr(wrbuf);
129 static const char *return_string_record(WRBUF wrbuf,
131 const char *buf, int sz,
132 const char *record_charset)
134 yaz_iconv_t cd = iconv_create_charset(record_charset, 0);
138 wrbuf_iconv_write(wrbuf, cd, buf, sz);
139 wrbuf_iconv_reset(wrbuf, cd);
141 buf = wrbuf_cstr(wrbuf);
142 sz = wrbuf_len(wrbuf);
149 static const char *return_record_wrbuf(WRBUF wrbuf, int *len,
150 Z_NamePlusRecord *npr,
151 int marctype, const char *charset)
153 Z_External *r = (Z_External *) npr->u.databaseRecord;
154 const Odr_oid *oid = r->direct_reference;
157 /* render bibliographic record .. */
158 if (r->which == Z_External_OPAC)
160 return return_opac_record(wrbuf, marctype, len,
163 if (r->which == Z_External_sutrs)
164 return return_string_record(wrbuf, len,
165 (char*) r->u.sutrs->buf,
168 else if (r->which == Z_External_octet)
170 const char *ret_buf = return_marc_record(
171 wrbuf, marctype, len,
172 (const char *) r->u.octet_aligned->buf,
173 r->u.octet_aligned->len,
177 /* not ISO2709. Return fail unless raw (ISO2709) is wanted */
178 if (yaz_oid_is_iso2709(oid) && marctype != YAZ_MARC_ISO2709)
180 return return_string_record(wrbuf, len,
181 (const char *) r->u.octet_aligned->buf,
182 r->u.octet_aligned->len,
185 else if (r->which == Z_External_grs1)
187 yaz_display_grs1(wrbuf, r->u.grs1, 0);
188 return return_string_record(wrbuf, len,
196 static const char *get_record_format(WRBUF wrbuf, int *len,
197 Z_NamePlusRecord *npr,
198 int marctype, const char *charset,
201 const char *res = return_record_wrbuf(wrbuf, len, npr, marctype, charset);
205 /* try to XML format res */
207 xmlKeepBlanksDefault(0); /* get get xmlDocFormatMemory to work! */
208 doc = xmlParseMemory(res, *len);
213 xmlDocDumpFormatMemory(doc, &xml_mem, &xml_size, 1);
215 wrbuf_write(wrbuf, (const char *) xml_mem, xml_size);
218 res = wrbuf_cstr(wrbuf);
219 *len = wrbuf_len(wrbuf);
227 static int replace_node(NMEM nmem, xmlNode *ptr,
228 const char *type_spec, char *record_buf)
234 WRBUF wrbuf = wrbuf_alloc();
235 ODR odr = odr_createmem(ODR_ENCODE);
236 Z_NamePlusRecord *npr = odr_malloc(odr, sizeof(*npr));
237 npr->which = Z_NamePlusRecord_databaseRecord;
239 if (atoi_n_check(record_buf, 5, &m_len))
240 npr->u.databaseRecord =
241 z_ext_record_usmarc(odr, record_buf, strlen(record_buf));
243 npr->u.databaseRecord =
244 z_ext_record_xml(odr, record_buf, strlen(record_buf));
245 res = yaz_record_render(npr, 0, wrbuf, type_spec, &len);
248 xmlDoc *doc = xmlParseMemory(res, strlen(res));
251 xmlNode *nptr = xmlCopyNode(xmlDocGetRootElement(doc), 1);
252 xmlReplaceNode(ptr, nptr);
257 xmlNode *nptr = xmlNewText(BAD_CAST res);
258 xmlReplaceNode(ptr, nptr);
262 wrbuf_destroy(wrbuf);
268 static const char *base64_render(NMEM nmem, WRBUF wrbuf,
269 const char *buf, int *len,
270 const char *expr, const char *type_spec)
273 xmlDocPtr doc = xmlParseMemory(buf, *len);
278 xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc);
281 xmlXPathObjectPtr xpathObj =
282 xmlXPathEvalExpression((const xmlChar *) expr, xpathCtx);
285 xmlNodeSetPtr nodes = xpathObj->nodesetval;
289 for (i = 0; i < nodes->nodeNr; i++)
291 xmlNode *ptr = nodes->nodeTab[i];
292 if (ptr->type == XML_TEXT_NODE)
295 nmem_text_node_cdata(ptr, nmem);
296 char *output = nmem_malloc(
297 nmem, strlen(input) + 1);
298 if (yaz_base64decode(input, output) == 0)
300 if (!replace_node(nmem, ptr, type_spec, output))
304 /* unset below to avoid a bad reference in
305 xmlXPathFreeObject below */
306 nodes->nodeTab[i] = 0;
312 xmlXPathFreeObject(xpathObj);
314 xmlXPathFreeContext(xpathCtx);
316 xmlDocDumpMemory(doc, &buf_out, &len_out);
320 wrbuf_write(wrbuf, (const char *) buf_out, len_out);
321 buf = wrbuf_cstr(wrbuf);
331 const char *yaz_record_render(Z_NamePlusRecord *npr, const char *schema,
333 const char *type_spec, int *len)
337 char *base64_xpath = 0;
342 const char *cp = type_spec;
348 for (i = 0; cp[i] && cp[i] != ';' && cp[i] != ' ' && i < sizeof(type)-1;
363 if (!strncmp(cp + i, "charset=", 8))
366 i = i + 8; /* skip charset= */
369 for (j = 0; cp[i] && cp[i] != ';' && cp[i] != ' '; i++)
371 if (j < sizeof(charset)-1)
372 charset[j++] = cp[i];
376 else if (!strncmp(cp + i, "format=", 7))
382 for (j = 0; cp[i] && cp[i] != ';' && cp[i] != ' '; i++)
384 if (j < sizeof(format)-1)
389 else if (!strncmp(cp + i, "base64=", 7))
396 while (cp[i] && cp[i] != ';')
399 nmem = nmem_create();
400 base64_xpath = nmem_strdupn(nmem, cp + i0, i - i0);
403 if (!strcmp(type, "database"))
405 *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
406 ret = npr->databaseName;
408 else if (!strcmp(type, "schema"))
410 *len = schema ? strlen(schema) : 0;
413 else if (!strcmp(type, "syntax"))
415 const char *desc = 0;
416 if (npr->which == Z_NamePlusRecord_databaseRecord)
418 Z_External *r = (Z_External *) npr->u.databaseRecord;
419 desc = yaz_oid_to_string(yaz_oid_std(), r->direct_reference, 0);
426 if (npr->which != Z_NamePlusRecord_databaseRecord)
428 else if (!strcmp(type, "render"))
430 ret = get_record_format(wrbuf, len, npr, YAZ_MARC_LINE, charset, format);
432 else if (!strcmp(type, "xml"))
434 ret = get_record_format(wrbuf, len, npr, YAZ_MARC_MARCXML, charset,
437 else if (!strcmp(type, "txml"))
439 ret = get_record_format(wrbuf, len, npr, YAZ_MARC_TURBOMARC, charset,
442 else if (!strcmp(type, "raw"))
444 ret = get_record_format(wrbuf, len, npr, YAZ_MARC_ISO2709, charset,
447 else if (!strcmp(type, "ext"))
450 ret = (const char *) npr->u.databaseRecord;
452 else if (!strcmp(type, "opac"))
454 if (npr->u.databaseRecord->which == Z_External_OPAC)
455 ret = get_record_format(wrbuf, len, npr, YAZ_MARC_MARCXML, charset,
459 if (base64_xpath && *len != -1)
461 char *type_spec = nmem_malloc(nmem,
462 strlen(type) + strlen(charset) + 11);
463 strcpy(type_spec, type);
466 strcat(type_spec, "; charset=");
467 strcat(type_spec, charset);
469 ret = base64_render(nmem, wrbuf, ret, len, base64_xpath, type_spec);
478 * c-file-style: "Stroustrup"
479 * indent-tabs-mode: nil
481 * vim: shiftwidth=4 tabstop=8 expandtab