1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2008 Index Data
3 * See the file LICENSE for details.
8 * \brief Implements CQL tree node utilities.
16 void cql_fputs(const char *buf, void *client_data)
18 FILE *f = (FILE *) client_data;
22 struct cql_node *cql_node_dup (NMEM nmem, struct cql_node *cp)
24 struct cql_node *cn = 0;
31 cn = cql_node_mk_sc(nmem, cp->u.st.index,
34 cn->u.st.modifiers = cql_node_dup(nmem, cp->u.st.modifiers);
35 cn->u.st.index_uri = cp->u.st.index_uri ?
36 nmem_strdup(nmem, cp->u.st.index_uri) : 0;
37 cn->u.st.relation_uri = cp->u.st.relation_uri ?
38 nmem_strdup(nmem, cp->u.st.relation_uri) : 0;
41 cn = cql_node_mk_boolean(nmem, cp->u.boolean.value);
42 cn->u.boolean.left = cql_node_dup(nmem, cp->u.boolean.left);
43 cn->u.boolean.right = cql_node_dup(nmem, cp->u.boolean.right);
48 struct cql_node *cql_node_mk_sc(NMEM nmem,
53 struct cql_node *p = (struct cql_node *) nmem_malloc(nmem, sizeof(*p));
54 p->which = CQL_NODE_ST;
57 p->u.st.index = nmem_strdup(nmem, index);
58 p->u.st.index_uri = 0;
61 p->u.st.term = nmem_strdup(nmem, term);
64 p->u.st.relation = nmem_strdup(nmem, relation);
65 p->u.st.relation_uri = 0;
66 p->u.st.modifiers = 0;
67 p->u.st.extra_terms = 0;
71 struct cql_node *cql_node_mk_boolean(NMEM nmem, const char *op)
73 struct cql_node *p = (struct cql_node *) nmem_malloc(nmem, sizeof(*p));
74 p->which = CQL_NODE_BOOL;
75 p->u.boolean.value = 0;
77 p->u.boolean.value = nmem_strdup(nmem, op);
78 p->u.boolean.left = 0;
79 p->u.boolean.right = 0;
80 p->u.boolean.modifiers = 0;
84 const char *cql_uri(void)
86 return "info:srw/cql-context-set/1/cql-v1.2";
89 struct cql_node *cql_apply_prefix(NMEM nmem,
90 struct cql_node *n, const char *prefix,
93 if (n->which == CQL_NODE_ST)
95 if (!n->u.st.index_uri && n->u.st.index)
96 { /* not yet resolved.. */
97 const char *cp = strchr(n->u.st.index, '.');
99 strlen(prefix) == (size_t) (cp - n->u.st.index) &&
100 !cql_strncmp(n->u.st.index, prefix, strlen(prefix)))
102 char *nval = nmem_strdup(nmem, cp+1);
103 n->u.st.index_uri = nmem_strdup(nmem, uri);
104 n->u.st.index = nval;
106 else if (!prefix && !cp)
108 n->u.st.index_uri = nmem_strdup(nmem, uri);
111 if (!n->u.st.relation_uri && n->u.st.relation)
113 const char *cp = strchr(n->u.st.relation, '.');
115 strlen(prefix) == (size_t)(cp - n->u.st.relation) &&
116 !cql_strncmp(n->u.st.relation, prefix, strlen(prefix)))
118 char *nval = nmem_strdup(nmem, cp+1);
119 n->u.st.relation_uri = nmem_strdup(nmem, uri);
120 n->u.st.relation = nval;
124 else if (n->which == CQL_NODE_BOOL)
126 cql_apply_prefix(nmem, n->u.boolean.left, prefix, uri);
127 cql_apply_prefix(nmem, n->u.boolean.right, prefix, uri);
132 void cql_node_destroy(struct cql_node *cn)
139 cql_node_destroy(cn->u.st.modifiers);
142 cql_node_destroy(cn->u.boolean.left);
143 cql_node_destroy(cn->u.boolean.right);
144 cql_node_destroy(cn->u.boolean.modifiers);
148 int cql_strcmp(const char *s1, const char *s2)
154 if (c1 >= 'A' && c1 <= 'Z')
155 c1 = c1 + ('a' - 'A');
156 if (c2 >= 'A' && c2 <= 'Z')
157 c2 = c2 + ('a' - 'A');
164 int cql_strncmp(const char *s1, const char *s2, size_t n)
166 while (*s1 && *s2 && n)
170 if (c1 >= 'A' && c1 <= 'Z')
171 c1 = c1 + ('a' - 'A');
172 if (c2 >= 'A' && c2 <= 'Z')
173 c2 = c2 + ('a' - 'A');
186 * indent-tabs-mode: nil
188 * vim: shiftwidth=4 tabstop=8 expandtab