2 * Copyright (c) 2002-2004, Index Data.
3 * See the file LICENSE for details.
5 * $Id: srw.c,v 1.17 2004-01-09 19:53:42 adam Exp $
11 #include <libxml/parser.h>
12 #include <libxml/tree.h>
14 static void add_XML_n(xmlNodePtr ptr, const char *elem, char *val, int len)
18 xmlDocPtr doc = xmlParseMemory(val,len);
21 xmlNodePtr c = xmlNewChild(ptr, 0, elem, 0);
22 xmlNodePtr t = xmlDocGetRootElement(doc);
23 xmlAddChild(c, xmlCopyNode(t,1));
29 xmlNodePtr add_xsd_string_n(xmlNodePtr ptr, const char *elem, const char *val,
34 xmlNodePtr c = xmlNewChild(ptr, 0, elem, 0);
35 xmlNodePtr t = xmlNewTextLen(val, len);
42 xmlNodePtr add_xsd_string(xmlNodePtr ptr, const char *elem, const char *val)
45 return xmlNewChild(ptr, 0, elem, val);
49 static void add_xsd_integer(xmlNodePtr ptr, const char *elem, const int *val)
54 sprintf(str, "%d", *val);
55 xmlNewChild(ptr, 0, elem, str);
59 static int match_element(xmlNodePtr ptr, const char *elem)
61 if (ptr->type == XML_ELEMENT_NODE && !strcmp(ptr->name, elem))
68 static int match_xsd_string_n(xmlNodePtr ptr, const char *elem, ODR o,
72 struct _xmlAttr *attr;
74 if (!match_element(ptr, elem))
77 for (attr = ptr->properties; attr; attr = attr->next)
78 if (!strcmp(attr->name, "type") &&
79 attr->children && attr->children->type == XML_TEXT_NODE)
81 const char *t = strchr(attr->children->content, ':');
85 t = attr->children->content;
86 if (!strcmp(t, "string"))
93 if (!ptr || ptr->type != XML_TEXT_NODE)
95 *val = odr_strdup(o, ptr->content);
97 *len = strlen(ptr->content);
102 static int match_xsd_string(xmlNodePtr ptr, const char *elem, ODR o,
105 return match_xsd_string_n(ptr, elem, o, val, 0);
108 static int match_xsd_XML_n(xmlNodePtr ptr, const char *elem, ODR o,
109 char **val, int *len)
113 if (!match_element(ptr, elem))
116 while (ptr && ptr->type != XML_TEXT_NODE && ptr->type != XML_COMMENT_NODE)
120 buf = xmlBufferCreate();
122 xmlNodeDump(buf, ptr->doc, ptr, 0, 0);
124 *val = odr_malloc(o, buf->use+1);
125 memcpy (*val, buf->content, buf->use);
126 (*val)[buf->use] = '\0';
136 static int match_xsd_integer(xmlNodePtr ptr, const char *elem, ODR o, int **val)
139 struct _xmlAttr *attr;
141 if (!match_element(ptr, elem))
144 for (attr = ptr->properties; attr; attr = attr->next)
145 if (!strcmp(attr->name, "type") &&
146 attr->children && attr->children->type == XML_TEXT_NODE)
148 const char *t = strchr(attr->children->content, ':');
152 t = attr->children->content;
153 if (!strcmp(t, "integer"))
160 if (!ptr || ptr->type != XML_TEXT_NODE)
162 *val = odr_intdup(o, atoi(ptr->content));
166 static int yaz_srw_record(ODR o, xmlNodePtr pptr, Z_SRW_record *rec,
167 void *client_data, const char *ns)
169 if (o->direction == ODR_DECODE)
171 int pack = Z_SRW_recordPacking_string;
173 rec->recordSchema = 0;
174 rec->recordData_buf = 0;
175 rec->recordData_len = 0;
176 rec->recordPosition = 0;
177 for (ptr = pptr->children; ptr; ptr = ptr->next)
181 if (match_xsd_string(ptr, "recordSchema", o,
184 else if (match_xsd_string(ptr, "recordPacking", o, &spack))
186 if (spack && !strcmp(spack, "xml"))
187 pack = Z_SRW_recordPacking_XML;
188 if (spack && !strcmp(spack, "string"))
189 pack = Z_SRW_recordPacking_string;
191 else if (match_xsd_integer(ptr, "recordPosition", o,
192 &rec->recordPosition))
196 if (pack == Z_SRW_recordPacking_XML)
197 match_xsd_XML_n(ptr, "recordData", o,
198 &rec->recordData_buf,
199 &rec->recordData_len);
200 if (pack == Z_SRW_recordPacking_string)
201 match_xsd_string_n(ptr, "recordData", o,
202 &rec->recordData_buf,
203 &rec->recordData_len);
206 rec->recordPacking = pack;
208 else if (o->direction == ODR_ENCODE)
210 xmlNodePtr ptr = pptr;
211 add_xsd_string(ptr, "recordSchema", rec->recordSchema);
212 switch(rec->recordPacking)
214 case Z_SRW_recordPacking_string:
215 add_xsd_string(ptr, "recordPacking", "string");
216 add_xsd_string_n(ptr, "recordData", rec->recordData_buf,
217 rec->recordData_len);
219 case Z_SRW_recordPacking_XML:
220 add_xsd_string(ptr, "recordPacking", "xml");
221 add_XML_n(ptr, "recordData", rec->recordData_buf,
222 rec->recordData_len);
225 add_xsd_integer(ptr, "recordPosition", rec->recordPosition);
230 static int yaz_srw_records(ODR o, xmlNodePtr pptr, Z_SRW_record **recs,
231 int *num, void *client_data, const char *ns)
233 if (o->direction == ODR_DECODE)
238 for (ptr = pptr->children; ptr; ptr = ptr->next)
240 if (ptr->type == XML_ELEMENT_NODE &&
241 !strcmp(ptr->name, "record"))
246 *recs = odr_malloc(o, *num * sizeof(**recs));
247 for (i = 0, ptr = pptr->children; ptr; ptr = ptr->next)
249 if (ptr->type == XML_ELEMENT_NODE &&
250 !strcmp(ptr->name, "record"))
252 yaz_srw_record(o, ptr, (*recs)+i, client_data, ns);
257 else if (o->direction == ODR_ENCODE)
260 for (i = 0; i < *num; i++)
262 xmlNodePtr rptr = xmlNewChild(pptr, 0, "record", 0);
263 yaz_srw_record(o, rptr, (*recs)+i, client_data, ns);
269 static int yaz_srw_diagnostics(ODR o, xmlNodePtr pptr, Z_SRW_diagnostic **recs,
270 int *num, void *client_data, const char *ns)
272 if (o->direction == ODR_DECODE)
277 for (ptr = pptr->children; ptr; ptr = ptr->next)
279 if (ptr->type == XML_ELEMENT_NODE &&
280 !strcmp(ptr->name, "diagnostic"))
285 *recs = odr_malloc(o, *num * sizeof(**recs));
286 for (i = 0; i < *num; i++)
289 (*recs)[i].details = 0;
291 for (i = 0, ptr = pptr->children; ptr; ptr = ptr->next)
293 if (ptr->type == XML_ELEMENT_NODE &&
294 !strcmp(ptr->name, "diagnostic"))
298 (*recs)[i].details = 0;
299 for (rptr = ptr->children; rptr; rptr = rptr->next)
301 if (match_xsd_integer(rptr, "code", o,
304 else if (match_xsd_string(rptr, "details", o,
305 &(*recs)[i].details))
312 else if (o->direction == ODR_ENCODE)
316 xmlNewNs(pptr, "http://www.loc.gov/zing/srw/diagnostics/", "diag");
317 for (i = 0; i < *num; i++)
319 xmlNodePtr rptr = xmlNewChild(pptr, ns_diag, "diagnostic", 0);
320 add_xsd_integer(rptr, "code", (*recs)[i].code);
321 add_xsd_string(rptr, "details", (*recs)[i].details);
324 const char *message = yaz_diag_srw_str(*(*recs)[i].code);
326 add_xsd_string(rptr, "message", message);
333 static int yaz_srw_term(ODR o, xmlNodePtr pptr, Z_SRW_scanTerm *term,
334 void *client_data, const char *ns)
336 if (o->direction == ODR_DECODE)
340 term->numberOfRecords = 0;
341 term->displayTerm = 0;
342 for (ptr = pptr->children; ptr; ptr = ptr->next)
344 if (match_xsd_string(ptr, "value", o, &term->value))
346 else if (match_xsd_integer(ptr, "numberOfRecords", o,
347 &term->numberOfRecords))
349 else if (match_xsd_string(ptr, "displayTerm", o,
354 else if (o->direction == ODR_ENCODE)
356 xmlNodePtr ptr = pptr;
357 add_xsd_string(ptr, "value", term->value);
358 add_xsd_integer(ptr, "value", term->numberOfRecords);
359 add_xsd_string(ptr, "displayTerm", term->displayTerm);
364 static int yaz_srw_terms(ODR o, xmlNodePtr pptr, Z_SRW_scanTerm **terms,
365 int *num, void *client_data, const char *ns)
367 if (o->direction == ODR_DECODE)
372 for (ptr = pptr->children; ptr; ptr = ptr->next)
374 if (ptr->type == XML_ELEMENT_NODE &&
375 !strcmp(ptr->name, "term"))
380 *terms = odr_malloc(o, *num * sizeof(**terms));
381 for (i = 0, ptr = pptr->children; ptr; ptr = ptr->next, i++)
383 if (ptr->type == XML_ELEMENT_NODE &&
384 !strcmp(ptr->name, "term"))
385 yaz_srw_term(o, ptr, (*terms)+i, client_data, ns);
388 else if (o->direction == ODR_ENCODE)
391 for (i = 0; i < *num; i++)
393 xmlNodePtr rptr = xmlNewChild(pptr, 0, "term", 0);
394 yaz_srw_term(o, rptr, (*terms)+i, client_data, ns);
400 int yaz_srw_codec(ODR o, void * vptr, Z_SRW_PDU **handler_data,
401 void *client_data, const char *ns)
403 xmlNodePtr pptr = vptr;
404 if (o->direction == ODR_DECODE)
406 Z_SRW_PDU **p = handler_data;
407 xmlNodePtr method = pptr->children;
409 while (method && method->type == XML_TEXT_NODE)
410 method = method->next;
414 if (method->type != XML_ELEMENT_NODE)
417 *p = odr_malloc(o, sizeof(**p));
418 (*p)->srw_version = odr_strdup(o, "1.1");
420 if (!strcmp(method->name, "searchRetrieveRequest"))
422 xmlNodePtr ptr = method->children;
423 Z_SRW_searchRetrieveRequest *req;
425 (*p)->which = Z_SRW_searchRetrieve_request;
426 req = (*p)->u.request = odr_malloc(o, sizeof(*req));
427 req->query_type = Z_SRW_query_type_cql;
429 req->sort_type = Z_SRW_sort_type_none;
431 req->startRecord = 0;
432 req->maximumRecords = 0;
433 req->recordSchema = 0;
434 req->recordPacking = 0;
435 req->recordXPath = 0;
436 req->resultSetTTL = 0;
440 for (; ptr; ptr = ptr->next)
442 if (match_xsd_string(ptr, "version", o,
445 else if (match_xsd_string(ptr, "query", o,
447 req->query_type = Z_SRW_query_type_cql;
448 else if (match_xsd_string(ptr, "pQuery", o,
450 req->query_type = Z_SRW_query_type_pqf;
451 else if (match_xsd_string(ptr, "xQuery", o,
453 req->query_type = Z_SRW_query_type_xcql;
454 else if (match_xsd_integer(ptr, "startRecord", o,
457 else if (match_xsd_integer(ptr, "maximumRecords", o,
458 &req->maximumRecords))
460 else if (match_xsd_string(ptr, "recordPacking", o,
461 &req->recordPacking))
463 else if (match_xsd_string(ptr, "recordSchema", o,
466 else if (match_xsd_string(ptr, "recordXPath", o,
469 else if (match_xsd_string(ptr, "resultSetTTL", o,
472 else if (match_xsd_string(ptr, "sortKeys", o,
473 &req->sort.sortKeys))
474 req->sort_type = Z_SRW_sort_type_sort;
475 else if (match_xsd_string(ptr, "stylesheet", o,
478 else if (match_xsd_string(ptr, "database", o,
481 /* missing is xQuery, xSortKeys .. */
484 else if (!strcmp(method->name, "searchRetrieveResponse"))
486 xmlNodePtr ptr = method->children;
487 Z_SRW_searchRetrieveResponse *res;
489 (*p)->which = Z_SRW_searchRetrieve_response;
490 res = (*p)->u.response = odr_malloc(o, sizeof(*res));
492 res->numberOfRecords = 0;
493 res->resultSetId = 0;
494 res->resultSetIdleTime = 0;
496 res->num_records = 0;
497 res->diagnostics = 0;
498 res->num_diagnostics = 0;
499 res->nextRecordPosition = 0;
501 for (; ptr; ptr = ptr->next)
503 if (match_xsd_string(ptr, "version", o,
506 else if (match_xsd_integer(ptr, "numberOfRecords", o,
507 &res->numberOfRecords))
509 else if (match_xsd_string(ptr, "resultSetId", o,
512 else if (match_xsd_integer(ptr, "resultSetIdleTime", o,
513 &res->resultSetIdleTime))
515 else if (match_element(ptr, "records"))
516 yaz_srw_records(o, ptr, &res->records,
517 &res->num_records, client_data,
519 else if (match_xsd_integer(ptr, "nextRecordPosition", o,
520 &res->nextRecordPosition))
522 else if (match_element(ptr, "diagnostics"))
523 yaz_srw_diagnostics(o, ptr, &res->diagnostics,
524 &res->num_diagnostics,
528 else if (!strcmp(method->name, "explainRequest"))
530 Z_SRW_explainRequest *req;
531 xmlNodePtr ptr = method->children;
533 (*p)->which = Z_SRW_explain_request;
534 req = (*p)->u.explain_request = odr_malloc(o, sizeof(*req));
535 req->recordPacking = 0;
538 for (; ptr; ptr = ptr->next)
540 if (match_xsd_string(ptr, "version", o,
543 else if (match_xsd_string(ptr, "stylesheet", o,
546 else if (match_xsd_string(ptr, "recordPacking", o,
547 &req->recordPacking))
549 else if (match_xsd_string(ptr, "database", o,
554 else if (!strcmp(method->name, "explainResponse"))
556 Z_SRW_explainResponse *res;
557 xmlNodePtr ptr = method->children;
559 (*p)->which = Z_SRW_explain_response;
560 res = (*p)->u.explain_response = odr_malloc(o, sizeof(*res));
561 res->diagnostics = 0;
562 res->num_diagnostics = 0;
564 for (; ptr; ptr = ptr->next)
566 if (match_xsd_string(ptr, "version", o,
569 else if (match_element(ptr, "record"))
570 yaz_srw_record(o, ptr, &res->record, client_data, ns);
571 else if (match_element(ptr, "diagnostics"))
572 yaz_srw_diagnostics(o, ptr, &res->diagnostics,
573 &res->num_diagnostics,
578 else if (!strcmp(method->name, "scanRequest"))
580 Z_SRW_scanRequest *req;
581 xmlNodePtr ptr = method->children;
583 (*p)->which = Z_SRW_scan_request;
584 req = (*p)->u.scan_request = odr_malloc(o, sizeof(*req));
588 req->responsePosition = 0;
589 req->maximumTerms = 0;
591 for (; ptr; ptr = ptr->next)
593 if (match_xsd_string(ptr, "version", o,
596 else if (match_xsd_string(ptr, "scanClause", o,
599 else if (match_xsd_integer(ptr, "responsePosition", o,
600 &req->responsePosition))
602 else if (match_xsd_integer(ptr, "maximumTerms", o,
605 else if (match_xsd_string(ptr, "stylesheet", o,
608 else if (match_xsd_string(ptr, "database", o,
613 else if (!strcmp(method->name, "scanResponse"))
615 Z_SRW_scanResponse *res;
616 xmlNodePtr ptr = method->children;
618 (*p)->which = Z_SRW_scan_response;
619 res = (*p)->u.scan_response = odr_malloc(o, sizeof(*res));
622 res->diagnostics = 0;
623 res->num_diagnostics = 0;
625 for (; ptr; ptr = ptr->next)
627 if (match_xsd_string(ptr, "version", o,
630 else if (match_element(ptr, "terms"))
631 yaz_srw_terms(o, ptr, &res->terms,
632 &res->num_terms, client_data,
634 else if (match_element(ptr, "diagnostics"))
635 yaz_srw_diagnostics(o, ptr, &res->diagnostics,
636 &res->num_diagnostics,
646 else if (o->direction == ODR_ENCODE)
648 Z_SRW_PDU **p = handler_data;
651 if ((*p)->which == Z_SRW_searchRetrieve_request)
653 Z_SRW_searchRetrieveRequest *req = (*p)->u.request;
654 xmlNodePtr ptr = xmlNewChild(pptr, 0,
655 "searchRetrieveRequest", 0);
656 ns_srw = xmlNewNs(ptr, ns, "zs");
657 xmlSetNs(ptr, ns_srw);
659 if ((*p)->srw_version)
660 add_xsd_string(ptr, "version", (*p)->srw_version);
661 switch(req->query_type)
663 case Z_SRW_query_type_cql:
664 add_xsd_string(ptr, "query", req->query.cql);
666 case Z_SRW_query_type_xcql:
667 add_xsd_string(ptr, "xQuery", req->query.xcql);
669 case Z_SRW_query_type_pqf:
670 add_xsd_string(ptr, "pQuery", req->query.pqf);
673 add_xsd_integer(ptr, "startRecord", req->startRecord);
674 add_xsd_integer(ptr, "maximumRecords", req->maximumRecords);
675 add_xsd_string(ptr, "recordPacking", req->recordPacking);
676 add_xsd_string(ptr, "recordSchema", req->recordSchema);
677 add_xsd_string(ptr, "recordXPath", req->recordXPath);
678 add_xsd_integer(ptr, "resultSetTTL", req->resultSetTTL);
679 switch(req->sort_type)
681 case Z_SRW_sort_type_none:
683 case Z_SRW_sort_type_sort:
684 add_xsd_string(ptr, "sortKeys", req->sort.sortKeys);
686 case Z_SRW_sort_type_xSort:
687 add_xsd_string(ptr, "xSortKeys", req->sort.xSortKeys);
690 add_xsd_string(ptr, "stylesheet", req->stylesheet);
691 add_xsd_string(ptr, "database", req->database);
693 else if ((*p)->which == Z_SRW_searchRetrieve_response)
695 Z_SRW_searchRetrieveResponse *res = (*p)->u.response;
696 xmlNodePtr ptr = xmlNewChild(pptr, 0,
697 "searchRetrieveResponse", 0);
698 ns_srw = xmlNewNs(ptr, ns, "zs");
699 xmlSetNs(ptr, ns_srw);
701 if ((*p)->srw_version)
702 add_xsd_string(ptr, "version", (*p)->srw_version);
703 add_xsd_integer(ptr, "numberOfRecords", res->numberOfRecords);
704 add_xsd_string(ptr, "resultSetId", res->resultSetId);
705 add_xsd_integer(ptr, "resultSetIdleTime", res->resultSetIdleTime);
706 if (res->num_records)
708 xmlNodePtr rptr = xmlNewChild(ptr, 0, "records", 0);
709 yaz_srw_records(o, rptr, &res->records, &res->num_records,
712 add_xsd_integer(ptr, "nextRecordPosition",
713 res->nextRecordPosition);
714 if (res->num_diagnostics)
716 xmlNodePtr rptr = xmlNewChild(ptr, 0, "diagnostics", 0);
717 yaz_srw_diagnostics(o, rptr, &res->diagnostics,
718 &res->num_diagnostics, client_data, ns);
721 else if ((*p)->which == Z_SRW_explain_request)
723 Z_SRW_explainRequest *req = (*p)->u.explain_request;
724 xmlNodePtr ptr = xmlNewChild(pptr, 0, "explainRequest", 0);
725 ns_srw = xmlNewNs(ptr, ns, "zs");
726 xmlSetNs(ptr, ns_srw);
728 add_xsd_string(ptr, "version", (*p)->srw_version);
729 add_xsd_string(ptr, "recordPacking", req->recordPacking);
730 add_xsd_string(ptr, "stylesheet", req->stylesheet);
731 add_xsd_string(ptr, "database", req->database);
733 else if ((*p)->which == Z_SRW_explain_response)
735 Z_SRW_explainResponse *res = (*p)->u.explain_response;
736 xmlNodePtr ptr = xmlNewChild(pptr, 0, "explainResponse", 0);
737 ns_srw = xmlNewNs(ptr, ns, "zs");
738 xmlSetNs(ptr, ns_srw);
740 add_xsd_string(ptr, "version", (*p)->srw_version);
743 xmlNodePtr ptr1 = xmlNewChild(ptr, 0, "record", 0);
744 yaz_srw_record(o, ptr1, &res->record, client_data, ns);
746 if (res->num_diagnostics)
748 xmlNodePtr rptr = xmlNewChild(ptr, 0, "diagnostics", 0);
749 yaz_srw_diagnostics(o, rptr, &res->diagnostics,
750 &res->num_diagnostics, client_data, ns);
753 else if ((*p)->which == Z_SRW_scan_request)
755 Z_SRW_scanRequest *req = (*p)->u.scan_request;
756 xmlNodePtr ptr = xmlNewChild(pptr, 0, "scanRequest", 0);
757 ns_srw = xmlNewNs(ptr, ns, "zs");
758 xmlSetNs(ptr, ns_srw);
760 add_xsd_string(ptr, "version", (*p)->srw_version);
761 add_xsd_string(ptr, "scanClause", req->scanClause);
762 add_xsd_integer(ptr, "responsePosition", req->responsePosition);
763 add_xsd_integer(ptr, "maximumTerms", req->maximumTerms);
764 add_xsd_string(ptr, "stylesheet", req->stylesheet);
765 add_xsd_string(ptr, "database", req->database);
767 else if ((*p)->which == Z_SRW_scan_response)
769 Z_SRW_scanResponse *res = (*p)->u.scan_response;
770 xmlNodePtr ptr = xmlNewChild(pptr, 0, "scanResponse", 0);
771 ns_srw = xmlNewNs(ptr, ns, "zs");
772 xmlSetNs(ptr, ns_srw);
774 add_xsd_string(ptr, "version", (*p)->srw_version);
778 xmlNodePtr rptr = xmlNewChild(ptr, 0, "terms", 0);
779 yaz_srw_terms(o, rptr, &res->terms, &res->num_terms,
782 if (res->num_diagnostics)
784 xmlNodePtr rptr = xmlNewChild(ptr, 0, "diagnostics", 0);
785 yaz_srw_diagnostics(o, rptr, &res->diagnostics,
786 &res->num_diagnostics, client_data, ns);