1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2012 Index Data
3 * See the file LICENSE for details.
7 * \brief Implements SortSpec parsing.
17 #include <yaz/z-core.h>
18 #include <yaz/sortspec.h>
19 #include <yaz/oid_db.h>
20 #include <yaz/wrbuf.h>
22 Z_SortKeySpecList *yaz_sort_spec(ODR out, const char *arg)
24 char sort_string_buf[64], sort_flags[64];
25 Z_SortKeySpecList *sksl = (Z_SortKeySpecList *)
26 odr_malloc(out, sizeof(*sksl));
30 sksl->specs = (Z_SortKeySpec **)odr_malloc(out, sizeof(sksl->specs) * 20);
32 while ((sscanf(arg, "%63s %63s%n", sort_string_buf,
33 sort_flags, &off)) == 2 && off > 1)
36 char *sort_string_sep;
37 char *sort_string = sort_string_buf;
38 Z_SortKeySpec *sks = (Z_SortKeySpec *) odr_malloc(out, sizeof(*sks));
39 Z_SortKey *sk = (Z_SortKey *) odr_malloc(out, sizeof(*sk));
42 sksl->specs[sksl->num_specs++] = sks;
43 sks->sortElement = (Z_SortElement *)
44 odr_malloc(out, sizeof(*sks->sortElement));
45 sks->sortElement->which = Z_SortElement_generic;
46 sks->sortElement->u.generic = sk;
48 if ((sort_string_sep = strchr(sort_string, '=')))
51 sk->which = Z_SortKey_sortAttributes;
52 sk->u.sortAttributes = (Z_SortAttributes *)
53 odr_malloc(out, sizeof(*sk->u.sortAttributes));
54 sk->u.sortAttributes->id = odr_oiddup(out, yaz_oid_attset_bib_1);
55 sk->u.sortAttributes->list = (Z_AttributeList *)
56 odr_malloc(out, sizeof(*sk->u.sortAttributes->list));
57 sk->u.sortAttributes->list->attributes = (Z_AttributeElement **)
59 sizeof(*sk->u.sortAttributes->list->attributes));
60 while (i < 10 && sort_string && sort_string_sep)
62 Z_AttributeElement *el = (Z_AttributeElement *)
63 odr_malloc(out, sizeof(*el));
64 sk->u.sortAttributes->list->attributes[i] = el;
66 el->attributeType = odr_intdup(out, atoi(sort_string));
67 el->which = Z_AttributeValue_numeric;
69 odr_intdup(out, odr_atoi(sort_string_sep + 1));
71 sort_string = strchr(sort_string, ',');
75 sort_string_sep = strchr(sort_string, '=');
78 sk->u.sortAttributes->list->num_attributes = i;
82 sk->which = Z_SortKey_sortField;
83 sk->u.sortField = odr_strdup (out, sort_string);
85 sks->sortRelation = odr_intdup(out, Z_SortKeySpec_ascending);
86 sks->caseSensitivity = odr_intdup(out, Z_SortKeySpec_caseInsensitive);
88 sks->which = Z_SortKeySpec_null;
89 sks->u.null = odr_nullval ();
91 for (i = 0; sort_flags[i]; i++)
93 switch (sort_flags[i])
98 *sks->sortRelation = Z_SortKeySpec_descending;
103 *sks->sortRelation = Z_SortKeySpec_ascending;
107 *sks->caseSensitivity = Z_SortKeySpec_caseInsensitive;
111 *sks->caseSensitivity = Z_SortKeySpec_caseSensitive;
114 sks->which = Z_SortKeySpec_abort;
115 sks->u.abort = odr_nullval();
118 sks->which = Z_SortKeySpec_missingValueData;
119 sks->u.missingValueData = (Odr_oct*)
120 odr_malloc(out, sizeof(Odr_oct));
122 sks->u.missingValueData->len = strlen(sort_flags+i);
123 sks->u.missingValueData->size = sks->u.missingValueData->len;
124 sks->u.missingValueData->buf = (unsigned char*)
125 odr_strdup(out, sort_flags+i);
126 i += strlen(sort_flags+i) - 1;
131 if (!sksl->num_specs)
136 int yaz_sort_spec_to_cql(Z_SortKeySpecList *sksl, WRBUF w)
139 for (i = 0; i < sksl->num_specs; i++)
141 Z_SortKeySpec *sks = sksl->specs[i];
144 if (sks->sortElement->which != Z_SortElement_generic)
147 sk = sks->sortElement->u.generic;
151 wrbuf_puts(w, " SORTBY ");
152 if (sk->which == Z_SortKey_sortAttributes)
154 else if (sk->which == Z_SortKey_sortField)
155 wrbuf_puts(w, sk->u.sortField);
156 switch (*sks->sortRelation)
158 case Z_SortKeySpec_ascending:
159 wrbuf_puts(w, "/ascending");
161 case Z_SortKeySpec_descending:
162 wrbuf_puts(w, "/descending");
165 switch (*sks->caseSensitivity)
167 case Z_SortKeySpec_caseSensitive:
168 wrbuf_puts(w, "/respectCase");
170 case Z_SortKeySpec_caseInsensitive:
171 wrbuf_puts(w, "/ignoreCase");
176 case Z_SortKeySpec_null:
178 case Z_SortKeySpec_abort:
179 wrbuf_puts(w, "/missingFail");
181 case Z_SortKeySpec_missingValueData:
182 wrbuf_puts(w, "/missingValue=");
183 wrbuf_write(w, (const char *) sks->u.missingValueData->buf,
184 sks->u.missingValueData->len);
191 int yaz_sort_spec_to_type7(Z_SortKeySpecList *sksl, WRBUF pqf)
194 for (i = 0; i < sksl->num_specs; i++)
196 Z_SortKeySpec *sks = sksl->specs[i];
199 if (sks->sortElement->which != Z_SortElement_generic)
202 sk = sks->sortElement->u.generic;
204 wrbuf_insert(pqf, 0, "@or ", 4);
206 if (sk->which == Z_SortKey_sortAttributes)
209 for (j = 0; j < sk->u.sortAttributes->list->num_attributes; j++)
211 Z_AttributeElement *el =
212 sk->u.sortAttributes->list->attributes[j];
213 if (el->which != Z_AttributeValue_numeric)
215 wrbuf_printf(pqf, " @attr " ODR_INT_PRINTF "=" ODR_INT_PRINTF,
216 *el->attributeType, *el->value.numeric);
219 else if (sk->which == Z_SortKey_sortField)
221 wrbuf_puts(pqf, " @attr 1=");
222 wrbuf_puts(pqf, sk->u.sortField);
224 switch (*sks->sortRelation)
226 case Z_SortKeySpec_ascending:
227 wrbuf_puts(pqf, " @attr 7=1 ");
229 case Z_SortKeySpec_descending:
230 wrbuf_puts(pqf, " @attr 7=2 ");
233 wrbuf_printf(pqf, "%d", i);
238 int yaz_sort_spec_to_srw_sortkeys(Z_SortKeySpecList *sksl, WRBUF w)
241 for (i = 0; i < sksl->num_specs; i++)
243 Z_SortKeySpec *sks = sksl->specs[i];
246 if (sks->sortElement->which != Z_SortElement_generic)
249 sk = sks->sortElement->u.generic;
254 if (sk->which == Z_SortKey_sortAttributes)
256 else if (sk->which == Z_SortKey_sortField)
258 wrbuf_puts(w, sk->u.sortField);
260 wrbuf_puts(w, ",,"); /* path is absent */
261 switch (*sks->sortRelation)
263 case Z_SortKeySpec_ascending:
266 case Z_SortKeySpec_descending:
271 switch (*sks->caseSensitivity)
273 case Z_SortKeySpec_caseSensitive:
276 case Z_SortKeySpec_caseInsensitive:
283 case Z_SortKeySpec_null:
284 wrbuf_puts(w, "highValue");
286 case Z_SortKeySpec_abort:
287 wrbuf_puts(w, "abort");
289 case Z_SortKeySpec_missingValueData:
290 wrbuf_write(w, (const char *) sks->u.missingValueData->buf,
291 sks->u.missingValueData->len);
298 int yaz_sort_spec_to_solr_sortkeys(Z_SortKeySpecList *sksl, WRBUF w)
301 for (i = 0; i < sksl->num_specs; i++)
303 Z_SortKeySpec *sks = sksl->specs[i];
306 if (sks->sortElement->which != Z_SortElement_generic)
309 sk = sks->sortElement->u.generic;
314 if (sk->which == Z_SortKey_sortAttributes)
316 else if (sk->which == Z_SortKey_sortField)
318 wrbuf_puts(w, sk->u.sortField);
320 switch (*sks->sortRelation)
322 case Z_SortKeySpec_ascending:
323 wrbuf_puts(w, " asc");
325 case Z_SortKeySpec_descending:
326 wrbuf_puts(w, " desc");
334 int yaz_srw_sortkeys_to_sort_spec(const char *srw_sortkeys, WRBUF w)
336 /* sru sortkey layout: path,schema,ascending,caseSensitive,missingValue */
337 /* see cql_sortby_to_sortkeys of YAZ. */
339 int num_sortspec = 0;
341 NMEM nmem = nmem_create();
344 nmem_strsplit_blank(nmem, srw_sortkeys, &sortspec, &num_sortspec);
345 if (num_sortspec > 0)
347 for (i = 0; i < num_sortspec; i++)
352 int case_sensitive = 0;
353 const char *missing = 0;
354 nmem_strsplitx(nmem, ",", sortspec[i], &arg, &num_arg, 0);
356 if (num_arg > 2 && arg[2][0])
357 ascending = atoi(arg[2]);
358 if (num_arg > 3 && arg[3][0])
359 case_sensitive = atoi(arg[3]);
360 if (num_arg > 4 && arg[4][0])
366 wrbuf_puts(w, arg[0]); /* field */
369 wrbuf_puts(w, ascending ? "a" : "d");
370 wrbuf_puts(w, case_sensitive ? "s" : "i");
373 if (!strcmp(missing, "omit")) {
376 else if (!strcmp(missing, "abort"))
378 else if (!strcmp(missing, "lowValue")) {
381 else if (!strcmp(missing, "highValue")) {
387 wrbuf_puts(w, missing);
396 int yaz_solr_sortkeys_to_sort_spec(const char *solr_sortkeys, WRBUF w)
398 /* Solr sortkey layout: field order[, field order] */
399 /* see cql_sortby_to_sortkeys of YAZ. */
401 int num_sortspec = 0;
403 NMEM nmem = nmem_create();
406 nmem_strsplit(nmem, ",", solr_sortkeys, &sortspec, &num_sortspec);
407 if (num_sortspec > 0)
409 for (i = 0; i < num_sortspec; i++)
414 int case_sensitive = 0;
415 nmem_strsplitx(nmem, " ", sortspec[i], &arg, &num_arg, 0);
420 if (!strcasecmp(arg[1],"asc") &&
421 !strcasecmp(arg[1],"desc"))
425 order = tolower(arg[1][0]);
430 wrbuf_puts(w, arg[0]); /* field */
433 wrbuf_putc(w, order);
434 // Always in-sensitive
435 wrbuf_puts(w, case_sensitive ? "s" : "i");
446 * c-file-style: "Stroustrup"
447 * indent-tabs-mode: nil
449 * vim: shiftwidth=4 tabstop=8 expandtab