2 * Copyright (c) 1995-2002, Index Data.
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
6 * $Id: d1_grs.c,v 1.25 2002-08-23 14:27:18 adam Exp $
13 #include <yaz/proto.h>
15 #include <yaz/data1.h>
17 #define D1_VARIANTARRAY 20 /* fixed max length on sup'd variant-list. Lazy me */
19 static Z_ElementMetaData *get_ElementMetaData(ODR o)
21 Z_ElementMetaData *r = (Z_ElementMetaData *)odr_malloc(o, sizeof(*r));
28 r->num_supportedVariants = 0;
29 r->supportedVariants = 0;
31 r->elementDescriptor = 0;
33 r->surrogateElement = 0;
40 * N should point to the *last* (leaf) triple in a sequence. Construct a variant
41 * from each of the triples beginning (ending) with 'n', up to the
42 * nearest parent tag. num should equal the number of triples in the
45 static Z_Variant *make_variant(data1_node *n, int num, ODR o)
47 Z_Variant *v = (Z_Variant *)odr_malloc(o, sizeof(*v));
50 v->globalVariantSetId = 0;
52 v->triples = (Z_Triple **)odr_malloc(o, sizeof(Z_Triple*) * num);
55 * cycle back up through the tree of variants
56 * (traversing exactly 'level' variants).
58 for (p = n, num--; p && num >= 0; p = p->parent, num--)
62 assert(p->which == DATA1N_variant);
63 t = v->triples[num] = (Z_Triple *)odr_malloc(o, sizeof(*t));
65 t->zclass = (int *)odr_malloc(o, sizeof(int));
66 *t->zclass = p->u.variant.type->zclass->zclass;
67 t->type = (int *)odr_malloc(o, sizeof(int));
68 *t->type = p->u.variant.type->type;
70 switch (p->u.variant.type->datatype)
73 t->which = Z_Triple_internationalString;
74 t->value.internationalString =
75 odr_strdup(o, p->u.variant.value);
78 yaz_log(LOG_WARN, "Unable to handle value for variant %s",
79 p->u.variant.type->name);
87 * Traverse the variant children of n, constructing a supportedVariant list.
89 static int traverse_triples(data1_node *n, int level, Z_ElementMetaData *m,
94 for (c = n->child; c; c = c->next)
95 if (c->which == DATA1N_data && level)
97 if (!m->supportedVariants)
98 m->supportedVariants = (Z_Variant **)odr_malloc(o, sizeof(Z_Variant*) *
100 else if (m->num_supportedVariants >= D1_VARIANTARRAY)
102 yaz_log(LOG_WARN, "Too many variants (D1_VARIANTARRAY==%d)",
107 if (!(m->supportedVariants[m->num_supportedVariants++] =
108 make_variant(n, level, o)))
111 else if (c->which == DATA1N_variant)
112 if (traverse_triples(c, level+1, m, o) < 0)
118 * Locate some data under this node. This routine should handle variants
121 static char *get_data(data1_node *n, int *len)
128 if (n->which == DATA1N_data)
131 *len = n->u.data.len;
133 for (i = 0; i<*len; i++)
134 if (!d1_isspace(n->u.data.data[i]))
136 while (*len && d1_isspace(n->u.data.data[*len - 1]))
140 return n->u.data.data + i;
142 if (n->which == DATA1N_tag)
156 static Z_ElementData *nodetoelementdata(data1_handle dh, data1_node *n,
157 int select, int leaf,
160 Z_ElementData *res = (Z_ElementData *)odr_malloc(o, sizeof(*res));
164 res->which = Z_ElementData_elementNotThere;
165 res->u.elementNotThere = odr_nullval();
167 else if (n->which == DATA1N_data && leaf)
170 int toget = n->u.data.len;
172 cp = get_data (n, &toget);
174 switch (n->u.data.what)
177 res->which = Z_ElementData_numeric;
178 res->u.numeric = (int *)odr_malloc(o, sizeof(int));
179 *res->u.numeric = atoi_n (cp, toget);
183 res->which = Z_ElementData_string;
184 res->u.string = (char *)odr_malloc(o, toget+1);
186 memcpy(res->u.string, cp, toget);
187 res->u.string[toget] = '\0';
191 res->which = Z_ElementData_oid;
194 memcpy (str, cp, toget);
196 res->u.oid = odr_getoidbystr(o, str);
197 *len += oid_oidlen(res->u.oid) * sizeof(int);
200 yaz_log(LOG_WARN, "Can't handle datatype.");
206 res->which = Z_ElementData_subtree;
207 if (!(res->u.subtree = data1_nodetogr (dh, n->parent, select, o, len)))
213 static int is_empty_data (data1_node *n)
215 if (n && n->which == DATA1N_data && n->u.data.what == DATA1I_text)
217 int i = n->u.data.len;
219 while (i > 0 && n->u.data.data[i-1] == '\n')
228 static Z_TaggedElement *nodetotaggedelement(data1_handle dh, data1_node *n,
232 Z_TaggedElement *res = (Z_TaggedElement *)odr_malloc(o, sizeof(*res));
237 if (n->which == DATA1N_tag)
239 if (n->u.tag.element)
240 tag = n->u.tag.element->tag;
243 /* skip empty data children */
244 while (is_empty_data(data))
249 { /* got one. see if this is the only non-empty one */
250 data1_node *sub = data->next;
251 while (sub && is_empty_data(sub))
254 leaf = 1; /* all empty. 'data' is the only child */
258 * If we're a data element at this point, we need to insert a
259 * wellKnown tag to wrap us up.
261 else if (n->which == DATA1N_data || n->which == DATA1N_variant)
263 if (n->root->u.root.absyn &&
264 !(tag = data1_gettagbyname (dh, n->root->u.root.absyn->tagset,
267 yaz_log(LOG_WARN, "Unable to locate tag for 'wellKnown'");
272 if (is_empty_data(data))
277 yaz_log(LOG_WARN, "Bad data.");
281 res->tagType = (int *)odr_malloc(o, sizeof(int));
282 *res->tagType = (tag && tag->tagset) ? tag->tagset->type : 3;
283 res->tagValue = (Z_StringOrNumeric *)odr_malloc(o, sizeof(Z_StringOrNumeric));
284 if (tag && tag->which == DATA1T_numeric)
286 res->tagValue->which = Z_StringOrNumeric_numeric;
287 res->tagValue->u.numeric = (int *)odr_malloc(o, sizeof(int));
288 *res->tagValue->u.numeric = tag->value.numeric;
294 if (n->which == DATA1N_tag)
295 tagstr = n->u.tag.tag; /* tag at node */
297 tagstr = tag->value.string; /* no take from well-known */
300 res->tagValue->which = Z_StringOrNumeric_string;
301 res->tagValue->u.string = odr_strdup(o, tagstr);
303 res->tagOccurrence = 0;
304 res->appliedVariant = 0;
306 if (n->which == DATA1N_variant || (data && data->which ==
307 DATA1N_variant && data->next == NULL))
311 res->metaData = get_ElementMetaData(o);
312 if (n->which == DATA1N_tag && n->u.tag.make_variantlist)
313 if (traverse_triples(data, 0, res->metaData, o) < 0)
315 while (data && data->which == DATA1N_variant)
320 if (n->which != DATA1N_tag || !n->u.tag.no_data_requested)
321 res->appliedVariant = make_variant(data->parent, nvars-1, o);
323 if (n->which == DATA1N_tag && n->u.tag.no_data_requested)
325 res->content = (Z_ElementData *)odr_malloc(o, sizeof(*res->content));
326 res->content->which = Z_ElementData_noDataRequested;
327 res->content->u.noDataRequested = odr_nullval();
329 else if (!(res->content = nodetoelementdata (dh, data, select, leaf,
336 Z_GenericRecord *data1_nodetogr(data1_handle dh, data1_node *n,
337 int select, ODR o, int *len)
339 Z_GenericRecord *res = (Z_GenericRecord *)odr_malloc(o, sizeof(*res));
341 int num_children = 0;
343 if (n->which == DATA1N_root)
344 n = data1_get_root_tag (dh, n);
346 for (c = n->child; c; c = c->next)
349 res->elements = (Z_TaggedElement **)
350 odr_malloc(o, sizeof(Z_TaggedElement *) * num_children);
351 res->num_elements = 0;
352 for (c = n->child; c; c = c->next)
354 if (c->which == DATA1N_tag && select && !c->u.tag.node_selected)
356 if ((res->elements[res->num_elements] =
357 nodetotaggedelement (dh, c, select, o, len)))