-/* $Id: cqltransform.c,v 1.28 2007-03-29 11:14:11 mike Exp $
- Copyright (C) 1995-2007, Index Data ApS
- Index Data Aps
-
-This file is part of the YAZ toolkit.
-
-See the file LICENSE.
-*/
+/* This file is part of the YAZ toolkit.
+ * Copyright (C) 1995-2008 Index Data
+ * See the file LICENSE for details.
+ */
/**
* \file cqltransform.c
{
if (!res)
res = cql_lookup_property(ct, category, prefix, eval);
+ /* we have some aliases for some relations unfortunately.. */
+ if (!res && !prefix && !strcmp(category, "relation"))
+ {
+ if (!strcmp(val, "=="))
+ res = cql_lookup_property(ct, category, prefix, "exact");
+ if (!strcmp(val, "="))
+ res = cql_lookup_property(ct, category, prefix, "eq");
+ if (!strcmp(val, "<="))
+ res = cql_lookup_property(ct, category, prefix, "le");
+ if (!strcmp(val, ">="))
+ res = cql_lookup_property(ct, category, prefix, "ge");
+ }
if (!res)
res = cql_lookup_property(ct, category, prefix, "*");
}
* characters starting at `term', or a null pointer of there are
* none -- like memchr().
*/
-static const char *wcchar(const char *term, int length)
+static const char *wcchar(int start, const char *term, int length)
{
- const char *best = 0;
- const char *current;
- char *whichp;
-
- for (whichp = "*?"; *whichp != '\0'; whichp++) {
- current = (const char *) memchr(term, *whichp, length);
- if (current != 0 && (best == 0 || current < best))
- best = current;
+ while (length > 0)
+ {
+ if (start || term[-1] != '\\')
+ if (strchr("*?", *term))
+ return term;
+ term++;
+ length--;
+ start = 0;
}
-
- return best;
+ return 0;
}
int i;
const char *ns = cn->u.st.index_uri;
int process_term = !has_modifier(cn, "regexp");
+ char *z3958_mem = 0;
assert(cn->which == CQL_NODE_ST);
if (process_term && length > 0)
{
+ const char *first_wc = wcchar(1, term, length);
+ const char *second_wc = first_wc ?
+ wcchar(0, first_wc+1, length-(first_wc-term)-1) : 0;
+
/* Check for well-known globbing patterns that represent
* simple truncation attributes as expected by, for example,
* Bath-compliant server. If we find such a pattern but
* there's no mapping for it, that's fine: we just use a
* general pattern-matching attribute.
*/
- if (length > 1 && term[0] == '*' && term[length-1] == '*' &&
- wcchar(term+1, length-2) == 0 &&
- cql_pr_attr(ct, "truncation", "both", 0,
- pr, client_data, 0)) {
+ if (first_wc == term && second_wc == term + length-1
+ && *first_wc == '*' && *second_wc == '*'
+ && cql_pr_attr(ct, "truncation", "both", 0, pr, client_data, 0))
+ {
term++;
length -= 2;
}
- else if (term[0] == '*' &&
- wcchar(term+1, length-1) == 0 &&
- cql_pr_attr(ct, "truncation", "left", 0,
- pr, client_data, 0)) {
+ else if (first_wc == term && second_wc == 0 && *first_wc == '*'
+ && cql_pr_attr(ct, "truncation", "left", 0,
+ pr, client_data, 0))
+ {
term++;
length--;
}
- else if (term[length-1] == '*' &&
- wcchar(term, length-1) == 0 &&
- cql_pr_attr(ct, "truncation", "right", 0,
- pr, client_data, 0)) {
+ else if (first_wc == term + length-1 && second_wc == 0
+ && *first_wc == '*'
+ && cql_pr_attr(ct, "truncation", "right", 0,
+ pr, client_data, 0))
+ {
length--;
}
- else if (wcchar(term, length))
+ else if (first_wc)
{
/* We have one or more wildcard characters, but not in a
* way that can be dealt with using only the standard
* supported".
*/
int i;
- char *mem;
cql_pr_attr(ct, "truncation", "z3958", 0,
pr, client_data, 28);
- mem = (char *) xmalloc(length+1);
- for (i = 0; i < length; i++) {
- if (term[i] == '*') mem[i] = '?';
- else if (term[i] == '?') mem[i] = '#';
- else mem[i] = term[i];
+ z3958_mem = (char *) xmalloc(length+1);
+ for (i = 0; i < length; i++)
+ {
+ if (i > 0 && term[i-1] == '\\')
+ z3958_mem[i] = term[i];
+ else if (term[i] == '*')
+ z3958_mem[i] = '?';
+ else if (term[i] == '?')
+ z3958_mem[i] = '#';
+ else
+ z3958_mem[i] = term[i];
}
- mem[length] = '\0';
- term = mem;
+ z3958_mem[length] = '\0';
+ term = z3958_mem;
}
else {
/* No masking characters. Use "truncation.none" if given. */
for (i = 0; i<length; i++)
{
/* pr(int) each character */
- char buf[3];
- const char *cp;
+ /* we do not need to deal with \-sequences because the
+ CQL and PQF terms have same \-format, bug #1988 */
+ char buf[2];
- buf[1] = term[i];
- buf[2] = 0;
- /* do we have to escape this char? */
- if (buf[1] == '"')
- {
- buf[0] = '\\';
- cp = buf;
- }
- else
- cp = buf+1;
- (*pr)(cp, client_data);
+ buf[0] = term[i];
+ buf[1] = '\0';
+ (*pr)(buf, client_data);
}
(*pr)("\" ", client_data);
+ xfree(z3958_mem);
+}
+
+void emit_terms(cql_transform_t ct,
+ struct cql_node *cn,
+ void (*pr)(const char *buf, void *client_data),
+ void *client_data,
+ const char *op)
+{
+ struct cql_node *ne = cn->u.st.extra_terms;
+ if (ne)
+ {
+ (*pr)("@", client_data);
+ (*pr)(op, client_data);
+ (*pr)(" ", client_data);
+ }
+ emit_term(ct, cn, cn->u.st.term, strlen(cn->u.st.term),
+ pr, client_data);
+ for (; ne; ne = ne->u.st.extra_terms)
+ {
+ if (ne->u.st.extra_terms)
+ {
+ (*pr)("@", client_data);
+ (*pr)(op, client_data);
+ (*pr)(" ", client_data);
+ }
+ emit_term(ct, cn, ne->u.st.term, strlen(ne->u.st.term),
+ pr, client_data);
+ }
}
void emit_wordlist(cql_transform_t ct,
}
}
cql_pr_attr(ct, "always", 0, 0, pr, client_data, 0);
- if (cn->u.st.relation && !cql_strcmp(cn->u.st.relation, "="))
- cql_pr_attr(ct, "relation", "eq", "scr",
- pr, client_data, 19);
- else if (cn->u.st.relation && !cql_strcmp(cn->u.st.relation, "<="))
- cql_pr_attr(ct, "relation", "le", "scr",
- pr, client_data, 19);
- else if (cn->u.st.relation && !cql_strcmp(cn->u.st.relation, ">="))
- cql_pr_attr(ct, "relation", "ge", "scr",
- pr, client_data, 19);
- else
- cql_pr_attr(ct, "relation", cn->u.st.relation, "eq",
- pr, client_data, 19);
+ cql_pr_attr(ct, "relation", cn->u.st.relation, 0, pr, client_data, 19);
cql_pr_attr(ct, "structure", cn->u.st.relation, 0,
pr, client_data, 24);
if (cn->u.st.relation && !cql_strcmp(cn->u.st.relation, "all"))
}
else
{
- emit_term(ct, cn, cn->u.st.term, strlen(cn->u.st.term),
- pr, client_data);
+ emit_terms(ct, cn, pr, client_data, "and");
}
break;
case CQL_NODE_BOOL:
projects / yaz-moved-to-github.git / blobdiff