2 * Copyright (c) 2002-2004, Index Data.
3 * See the file LICENSE for details.
5 * $Id: srw.c,v 1.14 2004-01-06 11:21:04 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, 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, char *val)
45 return xmlNewChild(ptr, 0, elem, val);
49 static void add_xsd_integer(xmlNodePtr ptr, const char *elem, 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);
327 static int yaz_srw_term(ODR o, xmlNodePtr pptr, Z_SRW_scanTerm *term,
328 void *client_data, const char *ns)
330 if (o->direction == ODR_DECODE)
334 term->numberOfRecords = 0;
335 term->displayTerm = 0;
336 for (ptr = pptr->children; ptr; ptr = ptr->next)
338 if (match_xsd_string(ptr, "value", o, &term->value))
340 else if (match_xsd_integer(ptr, "numberOfRecords", o,
341 &term->numberOfRecords))
343 else if (match_xsd_string(ptr, "displayTerm", o,
348 else if (o->direction == ODR_ENCODE)
350 xmlNodePtr ptr = pptr;
351 add_xsd_string(ptr, "value", term->value);
352 add_xsd_integer(ptr, "value", term->numberOfRecords);
353 add_xsd_string(ptr, "displayTerm", term->displayTerm);
358 static int yaz_srw_terms(ODR o, xmlNodePtr pptr, Z_SRW_scanTerm **terms,
359 int *num, void *client_data, const char *ns)
361 if (o->direction == ODR_DECODE)
366 for (ptr = pptr->children; ptr; ptr = ptr->next)
368 if (ptr->type == XML_ELEMENT_NODE &&
369 !strcmp(ptr->name, "term"))
374 *terms = odr_malloc(o, *num * sizeof(**terms));
375 for (i = 0, ptr = pptr->children; ptr; ptr = ptr->next, i++)
377 if (ptr->type == XML_ELEMENT_NODE &&
378 !strcmp(ptr->name, "term"))
379 yaz_srw_term(o, ptr, (*terms)+i, client_data, ns);
382 else if (o->direction == ODR_ENCODE)
385 for (i = 0; i < *num; i++)
387 xmlNodePtr rptr = xmlNewChild(pptr, 0, "term", 0);
388 yaz_srw_term(o, rptr, (*terms)+i, client_data, ns);
394 int yaz_srw_codec(ODR o, void * vptr, Z_SRW_PDU **handler_data,
395 void *client_data, const char *ns)
397 xmlNodePtr pptr = vptr;
398 if (o->direction == ODR_DECODE)
400 Z_SRW_PDU **p = handler_data;
401 xmlNodePtr method = pptr->children;
403 while (method && method->type == XML_TEXT_NODE)
404 method = method->next;
408 if (method->type != XML_ELEMENT_NODE)
411 *p = odr_malloc(o, sizeof(**p));
412 (*p)->srw_version = odr_strdup(o, "1.1");
414 if (!strcmp(method->name, "searchRetrieveRequest"))
416 xmlNodePtr ptr = method->children;
417 Z_SRW_searchRetrieveRequest *req;
419 (*p)->which = Z_SRW_searchRetrieve_request;
420 req = (*p)->u.request = odr_malloc(o, sizeof(*req));
421 req->query_type = Z_SRW_query_type_cql;
423 req->sort_type = Z_SRW_sort_type_none;
425 req->startRecord = 0;
426 req->maximumRecords = 0;
427 req->recordSchema = 0;
428 req->recordPacking = 0;
429 req->recordXPath = 0;
430 req->resultSetTTL = 0;
434 for (; ptr; ptr = ptr->next)
436 if (match_xsd_string(ptr, "query", o,
438 req->query_type = Z_SRW_query_type_cql;
439 else if (match_xsd_string(ptr, "pQuery", o,
441 req->query_type = Z_SRW_query_type_pqf;
442 else if (match_xsd_string(ptr, "xQuery", o,
444 req->query_type = Z_SRW_query_type_xcql;
445 else if (match_xsd_string(ptr, "sortKeys", o,
446 &req->sort.sortKeys))
447 req->sort_type = Z_SRW_sort_type_sort;
448 else if (match_xsd_string(ptr, "recordSchema", o,
451 else if (match_xsd_string(ptr, "recordPacking", o,
452 &req->recordPacking))
454 else if (match_xsd_string(ptr, "recordXPath", o,
457 else if (match_xsd_integer(ptr, "startRecord", o,
460 else if (match_xsd_integer(ptr, "maximumRecords", o,
461 &req->maximumRecords))
463 else if (match_xsd_string(ptr, "stylesheet", o,
466 else if (match_xsd_string(ptr, "database", o,
469 else if (match_xsd_string(ptr, "resultSetTTL", o,
472 else if (match_xsd_string(ptr, "version", o,
475 /* missing is xQuery, xSortKeys .. */
478 else if (!strcmp(method->name, "searchRetrieveResponse"))
480 xmlNodePtr ptr = method->children;
481 Z_SRW_searchRetrieveResponse *res;
483 (*p)->which = Z_SRW_searchRetrieve_response;
484 res = (*p)->u.response = odr_malloc(o, sizeof(*res));
486 res->numberOfRecords = 0;
487 res->resultSetId = 0;
488 res->resultSetIdleTime = 0;
490 res->num_records = 0;
491 res->diagnostics = 0;
492 res->num_diagnostics = 0;
493 res->nextRecordPosition = 0;
495 for (; ptr; ptr = ptr->next)
497 if (match_xsd_integer(ptr, "numberOfRecords", o,
498 &res->numberOfRecords))
500 else if (match_xsd_string(ptr, "resultSetId", o,
503 else if (match_xsd_integer(ptr, "resultSetIdleTime", o,
504 &res->resultSetIdleTime))
506 else if (match_element(ptr, "records"))
507 yaz_srw_records(o, ptr, &res->records,
508 &res->num_records, client_data,
510 else if (match_element(ptr, "diagnostics"))
511 yaz_srw_diagnostics(o, ptr, &res->diagnostics,
512 &res->num_diagnostics,
514 else if (match_xsd_integer(ptr, "nextRecordPosition", o,
515 &res->nextRecordPosition))
517 else if (match_xsd_string(ptr, "version", o,
522 else if (!strcmp(method->name, "explainRequest"))
524 Z_SRW_explainRequest *req;
525 xmlNodePtr ptr = method->children;
527 (*p)->which = Z_SRW_explain_request;
528 req = (*p)->u.explain_request = odr_malloc(o, sizeof(*req));
529 req->recordPacking = 0;
531 for (; ptr; ptr = ptr->next)
533 if (match_xsd_string(ptr, "database", o,
536 else if (match_xsd_string(ptr, "recordPacking", o,
537 &req->recordPacking))
539 else if (match_xsd_string(ptr, "version", o,
544 else if (!strcmp(method->name, "explainResponse"))
546 Z_SRW_explainResponse *res;
547 xmlNodePtr ptr = method->children;
549 (*p)->which = Z_SRW_explain_response;
550 res = (*p)->u.explain_response = odr_malloc(o, sizeof(*res));
551 res->diagnostics = 0;
552 res->num_diagnostics = 0;
554 for (; ptr; ptr = ptr->next)
556 if (match_element(ptr, "record"))
557 yaz_srw_record(o, ptr, &res->record, client_data, ns);
558 else if (match_xsd_string(ptr, "version", o,
561 else if (match_element(ptr, "diagnostics"))
562 yaz_srw_diagnostics(o, ptr, &res->diagnostics,
563 &res->num_diagnostics,
568 else if (!strcmp(method->name, "scanRequest"))
570 Z_SRW_scanRequest *req;
571 xmlNodePtr ptr = method->children;
573 (*p)->which = Z_SRW_scan_request;
574 req = (*p)->u.scan_request = odr_malloc(o, sizeof(*req));
578 req->responsePosition = 0;
579 req->maximumTerms = 0;
581 for (; ptr; ptr = ptr->next)
583 if (match_xsd_string(ptr, "version", o,
586 else if (match_xsd_string(ptr, "scanClause", o,
589 else if (match_xsd_string(ptr, "database", o,
592 else if (match_xsd_string(ptr, "stylesheet", o,
595 else if (match_xsd_integer(ptr, "responsePosition", o,
596 &req->responsePosition))
598 else if (match_xsd_integer(ptr, "maximumTerms", o,
603 else if (!strcmp(method->name, "scanResponse"))
605 Z_SRW_scanResponse *res;
606 xmlNodePtr ptr = method->children;
608 (*p)->which = Z_SRW_scan_response;
609 res = (*p)->u.scan_response = odr_malloc(o, sizeof(*res));
612 res->diagnostics = 0;
613 res->num_diagnostics = 0;
615 for (; ptr; ptr = ptr->next)
617 if (match_element(ptr, "terms"))
618 yaz_srw_terms(o, ptr, &res->terms,
619 &res->num_terms, client_data,
621 else if (match_element(ptr, "diagnostics"))
622 yaz_srw_diagnostics(o, ptr, &res->diagnostics,
623 &res->num_diagnostics,
625 else if (match_xsd_string(ptr, "version", o,
636 else if (o->direction == ODR_ENCODE)
638 Z_SRW_PDU **p = handler_data;
641 if ((*p)->which == Z_SRW_searchRetrieve_request)
643 Z_SRW_searchRetrieveRequest *req = (*p)->u.request;
644 xmlNodePtr ptr = xmlNewChild(pptr, 0,
645 "searchRetrieveRequest", 0);
646 ns_srw = xmlNewNs(ptr, ns, "zs");
647 xmlSetNs(ptr, ns_srw);
649 if ((*p)->srw_version)
650 add_xsd_string(ptr, "version", (*p)->srw_version);
651 switch(req->query_type)
653 case Z_SRW_query_type_cql:
654 add_xsd_string(ptr, "query", req->query.cql);
656 case Z_SRW_query_type_xcql:
657 add_xsd_string(ptr, "xQuery", req->query.xcql);
659 case Z_SRW_query_type_pqf:
660 add_xsd_string(ptr, "pQuery", req->query.pqf);
663 switch(req->sort_type)
665 case Z_SRW_sort_type_none:
667 case Z_SRW_sort_type_sort:
668 add_xsd_string(ptr, "sortKeys", req->sort.sortKeys);
670 case Z_SRW_sort_type_xSort:
671 add_xsd_string(ptr, "xSortKeys", req->sort.xSortKeys);
674 add_xsd_integer(ptr, "startRecord", req->startRecord);
675 add_xsd_integer(ptr, "maximumRecords", req->maximumRecords);
676 add_xsd_string(ptr, "recordSchema", req->recordSchema);
677 add_xsd_string(ptr, "recordPacking", req->recordPacking);
678 add_xsd_string(ptr, "recordXPath", req->recordXPath);
679 add_xsd_string(ptr, "database", req->database);
680 add_xsd_integer(ptr, "resultSetTTL", req->resultSetTTL);
681 add_xsd_string(ptr, "stylesheet", req->stylesheet);
683 else if ((*p)->which == Z_SRW_searchRetrieve_response)
685 Z_SRW_searchRetrieveResponse *res = (*p)->u.response;
686 xmlNodePtr ptr = xmlNewChild(pptr, 0,
687 "searchRetrieveResponse", 0);
688 ns_srw = xmlNewNs(ptr, ns, "zs");
689 xmlSetNs(ptr, ns_srw);
691 if ((*p)->srw_version)
692 add_xsd_string(ptr, "version", (*p)->srw_version);
693 add_xsd_integer(ptr, "numberOfRecords", res->numberOfRecords);
694 add_xsd_string(ptr, "resultSetId", res->resultSetId);
695 add_xsd_integer(ptr, "resultSetIdleTime", res->resultSetIdleTime);
696 if (res->num_records)
698 xmlNodePtr rptr = xmlNewChild(ptr, 0, "records", 0);
699 yaz_srw_records(o, rptr, &res->records, &res->num_records,
702 if (res->num_diagnostics)
704 xmlNodePtr rptr = xmlNewChild(ptr, 0, "diagnostics", 0);
705 yaz_srw_diagnostics(o, rptr, &res->diagnostics,
706 &res->num_diagnostics, client_data, ns);
708 add_xsd_integer(ptr, "nextRecordPosition", res->nextRecordPosition);
710 else if ((*p)->which == Z_SRW_explain_request)
712 xmlNodePtr ptr = xmlNewChild(pptr, 0, "explainRequest", 0);
713 ns_srw = xmlNewNs(ptr, ns, "zs");
714 xmlSetNs(ptr, ns_srw);
716 add_xsd_string(ptr, "version", (*p)->srw_version);
718 else if ((*p)->which == Z_SRW_explain_response)
720 Z_SRW_explainResponse *res = (*p)->u.explain_response;
721 xmlNodePtr ptr = xmlNewChild(pptr, 0, "explainResponse", 0);
722 ns_srw = xmlNewNs(ptr, ns, "zs");
723 xmlSetNs(ptr, ns_srw);
725 add_xsd_string(ptr, "version", (*p)->srw_version);
728 xmlNodePtr ptr1 = xmlNewChild(ptr, 0, "record", 0);
729 yaz_srw_record(o, ptr1, &res->record, client_data, ns);
731 if (res->num_diagnostics)
733 xmlNodePtr rptr = xmlNewChild(ptr, 0, "diagnostics", 0);
734 yaz_srw_diagnostics(o, rptr, &res->diagnostics,
735 &res->num_diagnostics, client_data, ns);
738 else if ((*p)->which == Z_SRW_scan_request)
740 Z_SRW_scanRequest *req = (*p)->u.scan_request;
741 xmlNodePtr ptr = xmlNewChild(pptr, 0, "scanRequest", 0);
742 ns_srw = xmlNewNs(ptr, ns, "zs");
743 xmlSetNs(ptr, ns_srw);
745 add_xsd_string(ptr, "version", (*p)->srw_version);
746 add_xsd_string(ptr, "scanClause", req->scanClause);
747 add_xsd_integer(ptr, "responsePosition", req->responsePosition);
748 add_xsd_integer(ptr, "maximumTerms", req->maximumTerms);
749 add_xsd_string(ptr, "stylesheet", req->stylesheet);
751 else if ((*p)->which == Z_SRW_scan_response)
753 Z_SRW_scanResponse *res = (*p)->u.scan_response;
754 xmlNodePtr ptr = xmlNewChild(pptr, 0, "scanResponse", 0);
755 ns_srw = xmlNewNs(ptr, ns, "zs");
756 xmlSetNs(ptr, ns_srw);
758 add_xsd_string(ptr, "version", (*p)->srw_version);
762 xmlNodePtr rptr = xmlNewChild(ptr, 0, "terms", 0);
763 yaz_srw_terms(o, rptr, &res->terms, &res->num_terms,
766 if (res->num_diagnostics)
768 xmlNodePtr rptr = xmlNewChild(ptr, 0, "diagnostics", 0);
769 yaz_srw_diagnostics(o, rptr, &res->diagnostics,
770 &res->num_diagnostics, client_data, ns);