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 1.24 2002-07-25 12:52:53 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)
117 static Z_ElementData *nodetoelementdata(data1_handle dh, data1_node *n,
118 int select, int leaf,
121 Z_ElementData *res = (Z_ElementData *)odr_malloc(o, sizeof(*res));
125 res->which = Z_ElementData_elementNotThere;
126 res->u.elementNotThere = odr_nullval();
128 else if (n->which == DATA1N_data && leaf)
134 for (p = n->parent; p && p->which != DATA1N_tag; p = p->parent)
137 switch (n->u.data.what)
140 res->which = Z_ElementData_numeric;
141 res->u.numeric = (int *)odr_malloc(o, sizeof(int));
142 *res->u.numeric = atoi(n->u.data.data);
146 toget = n->u.data.len;
147 res->which = Z_ElementData_string;
148 res->u.string = (char *)odr_malloc(o, toget+1);
149 memcpy(res->u.string, n->u.data.data, toget);
150 res->u.string[toget] = '\0';
154 res->which = Z_ElementData_oid;
155 strncpy(str, n->u.data.data, n->u.data.len);
156 str[n->u.data.len] = '\0';
157 res->u.oid = odr_getoidbystr(o, str);
158 *len += n->u.data.len;
161 yaz_log(LOG_WARN, "Can't handle datatype.");
167 res->which = Z_ElementData_subtree;
168 if (!(res->u.subtree = data1_nodetogr (dh, n->parent, select, o, len)))
174 static int is_empty_data (data1_node *n)
176 if (n && n->which == DATA1N_data && n->u.data.what == DATA1I_text)
178 int i = n->u.data.len;
180 while (i > 0 && n->u.data.data[i-1] == '\n')
189 static Z_TaggedElement *nodetotaggedelement(data1_handle dh, data1_node *n,
193 Z_TaggedElement *res = (Z_TaggedElement *)odr_malloc(o, sizeof(*res));
198 if (n->which == DATA1N_tag)
200 if (n->u.tag.element)
201 tag = n->u.tag.element->tag;
204 /* skip empty data children */
205 while (is_empty_data(data))
210 { /* got one. see if this is the only non-empty one */
211 data1_node *sub = data->next;
212 while (sub && is_empty_data(sub))
215 leaf = 1; /* all empty. 'data' is the only child */
219 * If we're a data element at this point, we need to insert a
220 * wellKnown tag to wrap us up.
222 else if (n->which == DATA1N_data || n->which == DATA1N_variant)
224 if (n->root->u.root.absyn &&
225 !(tag = data1_gettagbyname (dh, n->root->u.root.absyn->tagset,
228 yaz_log(LOG_WARN, "Unable to locate tag for 'wellKnown'");
233 if (is_empty_data(data))
238 yaz_log(LOG_WARN, "Bad data.");
242 res->tagType = (int *)odr_malloc(o, sizeof(int));
243 *res->tagType = (tag && tag->tagset) ? tag->tagset->type : 3;
244 res->tagValue = (Z_StringOrNumeric *)odr_malloc(o, sizeof(Z_StringOrNumeric));
245 if (tag && tag->which == DATA1T_numeric)
247 res->tagValue->which = Z_StringOrNumeric_numeric;
248 res->tagValue->u.numeric = (int *)odr_malloc(o, sizeof(int));
249 *res->tagValue->u.numeric = tag->value.numeric;
255 if (n->which == DATA1N_tag)
256 tagstr = n->u.tag.tag; /* tag at node */
258 tagstr = tag->value.string; /* no take from well-known */
261 res->tagValue->which = Z_StringOrNumeric_string;
262 res->tagValue->u.string = odr_strdup(o, tagstr);
264 res->tagOccurrence = 0;
265 res->appliedVariant = 0;
267 if (n->which == DATA1N_variant || (data && data->which ==
268 DATA1N_variant && data->next == NULL))
272 res->metaData = get_ElementMetaData(o);
273 if (n->which == DATA1N_tag && n->u.tag.make_variantlist)
274 if (traverse_triples(data, 0, res->metaData, o) < 0)
276 while (data && data->which == DATA1N_variant)
281 if (n->which != DATA1N_tag || !n->u.tag.no_data_requested)
282 res->appliedVariant = make_variant(data->parent, nvars-1, o);
284 if (n->which == DATA1N_tag && n->u.tag.no_data_requested)
286 res->content = (Z_ElementData *)odr_malloc(o, sizeof(*res->content));
287 res->content->which = Z_ElementData_noDataRequested;
288 res->content->u.noDataRequested = odr_nullval();
290 else if (!(res->content = nodetoelementdata (dh, data, select, leaf,
297 Z_GenericRecord *data1_nodetogr(data1_handle dh, data1_node *n,
298 int select, ODR o, int *len)
300 Z_GenericRecord *res = (Z_GenericRecord *)odr_malloc(o, sizeof(*res));
302 int num_children = 0;
304 if (n->which == DATA1N_root)
305 n = data1_get_root_tag (dh, n);
307 for (c = n->child; c; c = c->next)
310 res->elements = (Z_TaggedElement **)
311 odr_malloc(o, sizeof(Z_TaggedElement *) * num_children);
312 res->num_elements = 0;
313 for (c = n->child; c; c = c->next)
315 if (c->which == DATA1N_tag && select && !c->u.tag.node_selected)
317 if ((res->elements[res->num_elements] =
318 nodetotaggedelement (dh, c, select, o, len)))