2 * Copyright (C) 1995-2007, Index Data ApS
3 * See the file LICENSE for details.
5 * $Id: sortspec.c,v 1.9 2007-04-12 13:52:57 adam Exp $
9 * \brief Implements SortSpec parsing.
16 #include <yaz/proto.h>
17 #include <yaz/sortspec.h>
18 #include <yaz/oid_db.h>
20 Z_SortKeySpecList *yaz_sort_spec (ODR out, const char *arg)
22 char sort_string_buf[64], sort_flags[64];
23 Z_SortKeySpecList *sksl = (Z_SortKeySpecList *)
24 odr_malloc (out, sizeof(*sksl));
28 sksl->specs = (Z_SortKeySpec **)odr_malloc (out, sizeof(sksl->specs) * 20);
30 while ((sscanf (arg, "%63s %63s%n", sort_string_buf,
31 sort_flags, &off)) == 2 && off > 1)
34 char *sort_string_sep;
35 char *sort_string = sort_string_buf;
36 Z_SortKeySpec *sks = (Z_SortKeySpec *)odr_malloc (out, sizeof(*sks));
37 Z_SortKey *sk = (Z_SortKey *)odr_malloc (out, sizeof(*sk));
40 sksl->specs[sksl->num_specs++] = sks;
41 sks->sortElement = (Z_SortElement *)
42 odr_malloc (out, sizeof(*sks->sortElement));
43 sks->sortElement->which = Z_SortElement_generic;
44 sks->sortElement->u.generic = sk;
46 if ((sort_string_sep = strchr (sort_string, '=')))
49 sk->which = Z_SortKey_sortAttributes;
50 sk->u.sortAttributes = (Z_SortAttributes *)
51 odr_malloc (out, sizeof(*sk->u.sortAttributes));
52 sk->u.sortAttributes->id =
53 yaz_string_to_oid_odr(yaz_oid_std(),
54 CLASS_ATTSET, OID_STR_BIB1, out);
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, 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_caseSensitive);
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);
130 if (!sksl->num_specs)
137 * indent-tabs-mode: nil
139 * vim: shiftwidth=4 tabstop=8 expandtab