/* This file is part of the YAZ toolkit.
- * Copyright (C) 1995-2008 Index Data
+ * Copyright (C) 1995-2011 Index Data
* See the file LICENSE for details.
*/
-
/**
* \file cqltransform.c
* \brief Implements CQL transform (CQL to RPN conversion).
* index
* relationModifier
*/
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
#include <assert.h>
#include <stdlib.h>
#include <string.h>
-#include <yaz/cql.h>
+#include <yaz/rpn2cql.h>
#include <yaz/xmalloc.h>
#include <yaz/diagsrw.h>
#include <yaz/tokenizer.h>
#include <yaz/wrbuf.h>
+#include <yaz/z-core.h>
+#include <yaz/matchstr.h>
+#include <yaz/oid_db.h>
+#include <yaz/log.h>
struct cql_prop_entry {
char *pattern;
char *value;
+ Z_AttributeList attr_list;
struct cql_prop_entry *next;
};
int error;
char *addinfo;
WRBUF w;
+ NMEM nmem;
};
ct->error = 0;
ct->addinfo = 0;
ct->entry = 0;
+ ct->nmem = nmem_create();
return ct;
}
+static int cql_transform_parse_tok_line(cql_transform_t ct,
+ const char *pattern,
+ yaz_tok_parse_t tp)
+{
+ int ae_num = 0;
+ Z_AttributeElement *ae[20];
+ int ret = 0; /* 0=OK, != 0 FAIL */
+ int t;
+ t = yaz_tok_move(tp);
+
+ while (t == YAZ_TOK_STRING && ae_num < 20)
+ {
+ WRBUF type_str = wrbuf_alloc();
+ WRBUF set_str = 0;
+ Z_AttributeElement *elem = 0;
+ const char *value_str = 0;
+ /* attset type=value OR type=value */
+
+ elem = (Z_AttributeElement *) nmem_malloc(ct->nmem, sizeof(*elem));
+ elem->attributeSet = 0;
+ ae[ae_num] = elem;
+ wrbuf_puts(ct->w, yaz_tok_parse_string(tp));
+ wrbuf_puts(type_str, yaz_tok_parse_string(tp));
+ t = yaz_tok_move(tp);
+ if (t == YAZ_TOK_EOF)
+ {
+ wrbuf_destroy(type_str);
+ if (set_str)
+ wrbuf_destroy(set_str);
+ break;
+ }
+ if (t == YAZ_TOK_STRING)
+ {
+ wrbuf_puts(ct->w, " ");
+ wrbuf_puts(ct->w, yaz_tok_parse_string(tp));
+ set_str = type_str;
+
+ elem->attributeSet =
+ yaz_string_to_oid_nmem(yaz_oid_std(), CLASS_ATTSET,
+ wrbuf_cstr(set_str), ct->nmem);
+
+ type_str = wrbuf_alloc();
+ wrbuf_puts(type_str, yaz_tok_parse_string(tp));
+ t = yaz_tok_move(tp);
+ }
+ elem->attributeType = nmem_intdup(ct->nmem, 0);
+ if (sscanf(wrbuf_cstr(type_str), ODR_INT_PRINTF, elem->attributeType)
+ != 1)
+ {
+ wrbuf_destroy(type_str);
+ if (set_str)
+ wrbuf_destroy(set_str);
+ yaz_log(YLOG_WARN, "Expected numeric attribute type");
+ ret = -1;
+ break;
+ }
+
+ wrbuf_destroy(type_str);
+ if (set_str)
+ wrbuf_destroy(set_str);
+
+ if (t != '=')
+ {
+ yaz_log(YLOG_WARN, "Expected = after after attribute type");
+ ret = -1;
+ break;
+ }
+ t = yaz_tok_move(tp);
+ if (t != YAZ_TOK_STRING) /* value */
+ {
+ yaz_log(YLOG_WARN, "Missing attribute value");
+ ret = -1;
+ break;
+ }
+ value_str = yaz_tok_parse_string(tp);
+ if (yaz_isdigit(*value_str))
+ {
+ elem->which = Z_AttributeValue_numeric;
+ elem->value.numeric =
+ nmem_intdup(ct->nmem, atoi(value_str));
+ }
+ else
+ {
+ Z_ComplexAttribute *ca = (Z_ComplexAttribute *)
+ nmem_malloc(ct->nmem, sizeof(*ca));
+ elem->which = Z_AttributeValue_complex;
+ elem->value.complex = ca;
+ ca->num_list = 1;
+ ca->list = (Z_StringOrNumeric **)
+ nmem_malloc(ct->nmem, sizeof(Z_StringOrNumeric *));
+ ca->list[0] = (Z_StringOrNumeric *)
+ nmem_malloc(ct->nmem, sizeof(Z_StringOrNumeric));
+ ca->list[0]->which = Z_StringOrNumeric_string;
+ ca->list[0]->u.string = nmem_strdup(ct->nmem, value_str);
+ ca->num_semanticAction = 0;
+ ca->semanticAction = 0;
+ }
+ wrbuf_puts(ct->w, "=");
+ wrbuf_puts(ct->w, yaz_tok_parse_string(tp));
+ t = yaz_tok_move(tp);
+ wrbuf_puts(ct->w, " ");
+ ae_num++;
+ }
+ if (ret == 0) /* OK? */
+ {
+ struct cql_prop_entry **pp = &ct->entry;
+ while (*pp)
+ pp = &(*pp)->next;
+ *pp = (struct cql_prop_entry *) xmalloc(sizeof(**pp));
+ (*pp)->pattern = xstrdup(pattern);
+ (*pp)->value = xstrdup(wrbuf_cstr(ct->w));
+
+ (*pp)->attr_list.num_attributes = ae_num;
+ if (ae_num == 0)
+ (*pp)->attr_list.attributes = 0;
+ else
+ {
+ (*pp)->attr_list.attributes = (Z_AttributeElement **)
+ nmem_malloc(ct->nmem,
+ ae_num * sizeof(Z_AttributeElement *));
+ memcpy((*pp)->attr_list.attributes, ae,
+ ae_num * sizeof(Z_AttributeElement *));
+ }
+ (*pp)->next = 0;
+
+ if (0)
+ {
+ ODR pr = odr_createmem(ODR_PRINT);
+ Z_AttributeList *alp = &(*pp)->attr_list;
+ odr_setprint(pr, yaz_log_file());
+ z_AttributeList(pr, &alp, 0, 0);
+ odr_setprint(pr, 0);
+ odr_destroy(pr);
+ }
+ }
+ return ret;
+}
+
+int cql_transform_define_pattern(cql_transform_t ct, const char *pattern,
+ const char *value)
+{
+ int r;
+ yaz_tok_parse_t tp = yaz_tok_parse_buf(ct->tok_cfg, value);
+ yaz_tok_cfg_single_tokens(ct->tok_cfg, "=");
+ r = cql_transform_parse_tok_line(ct, pattern, tp);
+ yaz_tok_parse_destroy(tp);
+ return r;
+}
+
cql_transform_t cql_transform_open_FILE(FILE *f)
{
cql_transform_t ct = cql_transform_create();
char line[1024];
- struct cql_prop_entry **pp = &ct->entry;
yaz_tok_cfg_single_tokens(ct->tok_cfg, "=");
cql_transform_close(ct);
return 0;
}
- t = yaz_tok_move(tp);
-
- while (t == YAZ_TOK_STRING)
+ if (cql_transform_parse_tok_line(ct, pattern, tp))
{
- /* attset type=value OR type=value */
- wrbuf_puts(ct->w, yaz_tok_parse_string(tp));
- t = yaz_tok_move(tp);
- if (t == YAZ_TOK_EOF)
- break;
- if (t == YAZ_TOK_STRING)
- {
- wrbuf_puts(ct->w, " ");
- wrbuf_puts(ct->w, yaz_tok_parse_string(tp));
- t = yaz_tok_move(tp);
- }
- if (t != '=')
- {
- yaz_tok_parse_destroy(tp);
- cql_transform_close(ct);
- return 0;
- }
- t = yaz_tok_move(tp);
- if (t != YAZ_TOK_STRING) /* value */
- {
- yaz_tok_parse_destroy(tp);
- cql_transform_close(ct);
- return 0;
- }
- wrbuf_puts(ct->w, "=");
- wrbuf_puts(ct->w, yaz_tok_parse_string(tp));
- t = yaz_tok_move(tp);
- wrbuf_puts(ct->w, " ");
+ yaz_tok_parse_destroy(tp);
+ cql_transform_close(ct);
+ return 0;
}
- *pp = (struct cql_prop_entry *) xmalloc(sizeof(**pp));
- (*pp)->pattern = pattern;
- (*pp)->value = xstrdup(wrbuf_cstr(ct->w));
- pp = &(*pp)->next;
+ xfree(pattern);
}
else if (t != YAZ_TOK_EOF)
{
}
yaz_tok_parse_destroy(tp);
}
- *pp = 0;
return ct;
}
xfree(ct->addinfo);
yaz_tok_cfg_destroy(ct->tok_cfg);
wrbuf_destroy(ct->w);
+ nmem_destroy(ct->nmem);
xfree(ct);
}
return ct;
}
+#if 0
+struct Z_AttributeElement {
+ Z_AttributeSetId *attributeSet; /* OPT */
+ int *attributeType;
+ int which;
+ union {
+ int *numeric;
+ Z_ComplexAttribute *complex;
+#define Z_AttributeValue_numeric 1
+#define Z_AttributeValue_complex 2
+ } value;
+};
+#endif
+
+static int compare_attr(Z_AttributeElement *a, Z_AttributeElement *b)
+{
+ ODR odr_a = odr_createmem(ODR_ENCODE);
+ ODR odr_b = odr_createmem(ODR_ENCODE);
+ int len_a, len_b;
+ char *buf_a, *buf_b;
+ int ret;
+
+ z_AttributeElement(odr_a, &a, 0, 0);
+ z_AttributeElement(odr_b, &b, 0, 0);
+
+ buf_a = odr_getbuf(odr_a, &len_a, 0);
+ buf_b = odr_getbuf(odr_b, &len_b, 0);
+
+ ret = yaz_memcmp(buf_a, buf_b, len_a, len_b);
+
+ odr_destroy(odr_a);
+ odr_destroy(odr_b);
+ return ret;
+}
+
+const char *cql_lookup_reverse(cql_transform_t ct,
+ const char *category,
+ Z_AttributeList *attributes)
+{
+ struct cql_prop_entry *e;
+ size_t clen = strlen(category);
+ for (e = ct->entry; e; e = e->next)
+ {
+ if (!strncmp(e->pattern, category, clen))
+ {
+ /* category matches.. See if attributes in pattern value
+ are all listed in actual attributes */
+ int i;
+ for (i = 0; i < e->attr_list.num_attributes; i++)
+ {
+ /* entry attribute */
+ Z_AttributeElement *e_ae = e->attr_list.attributes[i];
+ int j;
+ for (j = 0; j < attributes->num_attributes; j++)
+ {
+ /* actual attribute */
+ Z_AttributeElement *a_ae = attributes->attributes[j];
+ int r = compare_attr(e_ae, a_ae);
+ if (r == 0)
+ break;
+ }
+ if (j == attributes->num_attributes)
+ break; /* i was not found at all.. try next pattern */
+
+ }
+ if (i == e->attr_list.num_attributes)
+ return e->pattern + clen;
+ }
+ }
+ return 0;
+}
+
static const char *cql_lookup_property(cql_transform_t ct,
const char *pat1, const char *pat2,
const char *pat3)
int i;
while (*cp1 && *cp1 != ' ')
cp1++;
- if (cp1 - cp0 >= sizeof(buf))
+ if (cp1 - cp0 >= (ptrdiff_t) sizeof(buf))
break;
memcpy(buf, cp0, cp1 - cp0);
buf[cp1-cp0] = 0;
}
-void emit_term(cql_transform_t ct,
- struct cql_node *cn,
- const char *term, int length,
- void (*pr)(const char *buf, void *client_data),
- void *client_data)
+static void emit_term(cql_transform_t ct,
+ struct cql_node *cn,
+ const char *term, int length,
+ void (*pr)(const char *buf, void *client_data),
+ void *client_data)
{
int i;
const char *ns = cn->u.st.index_uri;
}
(*pr)("\"", client_data);
- for (i = 0; i<length; i++)
+ for (i = 0; i < length; i++)
{
/* pr(int) each character */
/* we do not need to deal with \-sequences because the
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)
+static 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)
}
}
-void emit_wordlist(cql_transform_t ct,
- struct cql_node *cn,
- void (*pr)(const char *buf, void *client_data),
- void *client_data,
- const char *op)
+static void emit_wordlist(cql_transform_t ct,
+ struct cql_node *cn,
+ void (*pr)(const char *buf, void *client_data),
+ void *client_data,
+ const char *op)
{
const char *cp0 = cn->u.st.term;
const char *cp1;
cql_transform_r(ct, cn->u.boolean.left, pr, client_data);
cql_transform_r(ct, cn->u.boolean.right, pr, client_data);
break;
-
+ case CQL_NODE_SORT:
+ cql_transform_r(ct, cn->u.sort.search, pr, client_data);
+ break;
default:
fprintf(stderr, "Fatal: impossible CQL node-type %d\n", cn->which);
abort();
return cql_transform(ct, cn, cql_fputs, f);
}
-int cql_transform_buf(cql_transform_t ct, struct cql_node *cn, char *out, int max)
+int cql_transform_buf(cql_transform_t ct, struct cql_node *cn,
+ char *out, int max)
{
struct cql_buf_write_info info;
int r;
/*
* Local variables:
* c-basic-offset: 4
+ * c-file-style: "Stroustrup"
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
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