/* This file is part of the YAZ toolkit.
- * Copyright (C) 1995-2012 Index Data
+ * Copyright (C) Index Data
* See the file LICENSE for details.
*/
-/**
+/**
* \file cclfind.c
* \brief Implements parsing of a CCL FIND query.
*
/**
* strxcat: concatenate strings.
- * n: Null-terminated Destination string
+ * n: Null-terminated Destination string
* src: Source string to be appended (not null-terminated)
* len: Length of source string.
*/
const char *set, int type)
{
struct ccl_rpn_attr *n;
-
+
n = (struct ccl_rpn_attr *)xmalloc(sizeof(*n));
ccl_assert(n);
if (set)
n->type = type;
n->next = p->u.t.attr_list;
p->u.t.attr_list = n;
-
+
return n;
}
#define REGEX_CHARS "^[]{}()|.*+?!$"
#define CCL_CHARS "#?\\"
+
+static int has_ccl_masking(const char *src_str,
+ size_t src_len,
+ const char **truncation_aliases,
+ const char **mask_aliases)
+{
+ size_t j;
+ int quote_mode = 0;
+
+ for (j = 0; j < src_len; j++)
+ {
+ size_t op_size;
+ if (j > 0 && src_str[j-1] == '\\')
+ ;
+ else if (src_str[j] == '"')
+ quote_mode = !quote_mode;
+ else if (!quote_mode &&
+ (op_size = cmp_operator(truncation_aliases,
+ src_str + j)))
+ return 1;
+ else if (!quote_mode &&
+ (op_size = cmp_operator(mask_aliases,
+ src_str + j)))
+ return 1;
+ }
+ return 0;
+}
+
static int append_term(CCL_parser cclp, const char *src_str, size_t src_len,
- char *dst_term, int *regex_trunc, int *z3958_trunc,
+ char *dst_term, int regex_trunc, int z3958_trunc,
const char **truncation_aliases,
+ const char **mask_aliases,
int is_first, int is_last,
int *left_trunc, int *right_trunc)
{
size_t op_size;
if (j > 0 && src_str[j-1] == '\\')
{
- if (*regex_trunc && strchr(REGEX_CHARS "\\", src_str[j]))
- {
- *regex_trunc = 2;
+ if (regex_trunc && strchr(REGEX_CHARS "\\", src_str[j]))
strcat(dst_term, "\\");
- }
- else if (*z3958_trunc && strchr(CCL_CHARS "\\", src_str[j]))
- {
- *z3958_trunc = 2;
+ else if (z3958_trunc && strchr(CCL_CHARS "\\", src_str[j]))
strcat(dst_term, "\\");
- }
strxcat(dst_term, src_str + j, 1);
}
else if (src_str[j] == '"')
)
{
j += (op_size - 1); /* j++ in for loop */
- if (*regex_trunc)
- {
+ if (regex_trunc)
strcat(dst_term, ".*");
- *regex_trunc = 2; /* regex trunc is really needed */
- }
- else if (*z3958_trunc)
- {
+ else if (z3958_trunc)
strcat(dst_term, "?");
- *z3958_trunc = 2;
- }
else if (is_first && j == 0)
*left_trunc = 1;
else if (is_last && j == src_len - 1)
return -1;
}
}
- else if (!quote_mode && src_str[j] == '#')
+ else if (!quote_mode &&
+ (op_size = cmp_operator(mask_aliases, src_str + j)))
{
- if (*regex_trunc)
- {
+ j += (op_size - 1); /* j++ in for loop */
+ if (regex_trunc)
strcat(dst_term, ".");
- *regex_trunc = 2; /* regex trunc is really needed */
- }
- else if (*z3958_trunc)
- {
+ else if (z3958_trunc)
strcat(dst_term, "#");
- *z3958_trunc = 2;
- }
else
{
cclp->error_code = CCL_ERR_TRUNC_NOT_SINGLE;
}
else if (src_str[j] != '\\')
{
- if (*regex_trunc && strchr(REGEX_CHARS, src_str[j]))
- {
- *regex_trunc = 2;
+ if (regex_trunc && strchr(REGEX_CHARS, src_str[j]))
strcat(dst_term, "\\");
- }
- else if (*z3958_trunc && strchr(CCL_CHARS, src_str[j]))
- {
- *z3958_trunc = 2;
+ else if (z3958_trunc && strchr(CCL_CHARS, src_str[j]))
strcat(dst_term, "\\");
- }
- strxcat(dst_term, src_str + j, 1);
+ strxcat(dst_term, src_str + j, 1);
}
}
return 0;
}
+
+static struct ccl_rpn_node *ccl_term_one_use(CCL_parser cclp,
+ struct ccl_rpn_attr *attr_use,
+ ccl_qualifier_t *qa,
+ size_t no, int term_len,
+ const char **truncation_aliases,
+ const char **mask_aliases,
+ int is_phrase,
+ int is_ccl_masked,
+ int auto_group)
+{
+ struct ccl_rpn_node *p;
+ size_t i;
+ int relation_value = -1;
+ int position_value = -1;
+ int structure_value = -1;
+ int truncation_value = -1;
+ int completeness_value = -1;
+
+ int left_trunc = 0;
+ int right_trunc = 0;
+ int regex_trunc = 0;
+ int z3958_trunc = 0;
+ char *attset;
+ struct ccl_token *lookahead = cclp->look_token;
+
+ p = ccl_rpn_node_create(CCL_RPN_TERM);
+ p->u.t.attr_list = NULL;
+ p->u.t.term = NULL;
+ if (qa && qa[0])
+ {
+ const char *n = ccl_qual_get_name(qa[0]);
+ if (n)
+ p->u.t.qual = xstrdup(n);
+ }
+ /* go through all attributes and add them to the attribute list */
+ for (i = 0; qa && qa[i]; i++)
+ {
+ struct ccl_rpn_attr *attr;
+ for (attr = ccl_qual_get_attr(qa[i]); attr; attr = attr->next)
+ if (attr->type != 1 || attr == attr_use)
+ {
+ switch (attr->kind)
+ {
+ case CCL_RPN_ATTR_STRING:
+ ccl_add_attr_string(p, attr->set, attr->type,
+ attr->value.str);
+ break;
+ case CCL_RPN_ATTR_NUMERIC:
+ if (attr->value.numeric > 0)
+ { /* deal only with REAL attributes (positive) */
+ switch (attr->type)
+ {
+ case CCL_BIB1_REL:
+ if (relation_value != -1)
+ continue;
+ relation_value = attr->value.numeric;
+ break;
+ case CCL_BIB1_POS:
+ if (position_value != -1)
+ continue;
+ position_value = attr->value.numeric;
+ break;
+ case CCL_BIB1_STR:
+ if (structure_value != -1)
+ continue;
+ structure_value = attr->value.numeric;
+ break;
+ case CCL_BIB1_TRU:
+ if (truncation_value != -1)
+ continue;
+ truncation_value = attr->value.numeric;
+ break;
+ case CCL_BIB1_COM:
+ if (completeness_value != -1)
+ continue;
+ completeness_value = attr->value.numeric;
+ break;
+ }
+ ccl_add_attr_numeric(p, attr->set, attr->type,
+ attr->value.numeric);
+ }
+ }
+ }
+ }
+ attset = 0;
+ if (structure_value == -1 && (
+ auto_group ||
+ qual_val_type(qa, CCL_BIB1_STR, CCL_BIB1_STR_WP, &attset))
+ )
+ {
+ if (!is_phrase)
+ ccl_add_attr_numeric(p, attset, CCL_BIB1_STR, 2);
+ else
+ ccl_add_attr_numeric(p, attset, CCL_BIB1_STR, 1);
+ }
+ if (qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_REGEX,
+ &attset))
+ {
+ if (is_ccl_masked)
+ regex_trunc = 1; /* regex trunc (102) allowed */
+ }
+ else if (qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_Z3958,
+ &attset))
+ {
+ if (is_ccl_masked)
+ z3958_trunc = 1; /* Z39.58 trunc (CCL) trunc allowed */
+ }
+ /* make the RPN token */
+ p->u.t.term = (char *)xmalloc(term_len * 2 + 2);
+ ccl_assert(p->u.t.term);
+ p->u.t.term[0] = '\0';
+
+ for (i = 0; i < no; i++)
+ {
+ const char *src_str = lookahead->name;
+ size_t src_len = lookahead->len;
+
+ if (p->u.t.term[0] && lookahead->ws_prefix_len)
+ {
+ strxcat(p->u.t.term, lookahead->ws_prefix_buf,
+ lookahead->ws_prefix_len);
+ }
+ if (append_term(cclp, src_str, src_len, p->u.t.term, regex_trunc,
+ z3958_trunc, truncation_aliases, mask_aliases,
+ i == 0, i == no - 1,
+ &left_trunc, &right_trunc))
+ {
+ ccl_rpn_delete(p);
+ return NULL;
+ }
+ lookahead = lookahead->next;
+ }
+ if (left_trunc && right_trunc)
+ {
+ if (!qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_BOTH,
+ &attset))
+ {
+ cclp->error_code = CCL_ERR_TRUNC_NOT_BOTH;
+ ccl_rpn_delete(p);
+ return NULL;
+ }
+ ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 3);
+ }
+ else if (right_trunc)
+ {
+ if (!qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_RIGHT,
+ &attset))
+ {
+ cclp->error_code = CCL_ERR_TRUNC_NOT_RIGHT;
+ ccl_rpn_delete(p);
+ return NULL;
+ }
+ ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 1);
+ }
+ else if (left_trunc)
+ {
+ if (!qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_LEFT,
+ &attset))
+ {
+ cclp->error_code = CCL_ERR_TRUNC_NOT_LEFT;
+ ccl_rpn_delete(p);
+ return NULL;
+ }
+ ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 2);
+ }
+ else if (regex_trunc)
+ {
+ ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 102);
+ }
+ else if (z3958_trunc)
+ {
+ ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 104);
+ }
+ else
+ {
+ if (qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_NONE,
+ &attset))
+ ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 100);
+ }
+ return p;
+}
+
/**
- * search_term: Parse CCL search term.
+ * search_term: Parse CCL search term.
* cclp: CCL Parser
* qa: Qualifier attributes already applied.
* term_list: tokens we accept as terms in context
int and_list = 0;
int auto_group = 0;
int or_list = 0;
- char *attset;
const char **truncation_aliases;
const char *t_default[2];
+ const char **mask_aliases;
+ const char *m_default[2];
truncation_aliases =
ccl_qual_search_special(cclp->bibset, "truncation");
t_default[1] = 0;
}
+ mask_aliases =
+ ccl_qual_search_special(cclp->bibset, "mask");
+ if (!mask_aliases)
+ {
+ mask_aliases = m_default;
+ m_default[0] = "#";
+ m_default[1] = 0;
+ }
+
+
if (qual_val_type(qa, CCL_BIB1_STR, CCL_BIB1_STR_AND_LIST, 0))
and_list = 1;
if (qual_val_type(qa, CCL_BIB1_STR, CCL_BIB1_STR_AUTO_GROUP, 0))
or_list = 1;
while (1)
{
- struct ccl_rpn_node *p;
+ struct ccl_rpn_node *p = 0;
size_t no, i;
- int is_phrase = 0;
- int relation_value = -1;
- int position_value = -1;
- int structure_value = -1;
- int truncation_value = -1;
- int completeness_value = -1;
int len = 0;
- int left_trunc = 0;
- int right_trunc = 0;
- int regex_trunc = 0;
- int z3958_trunc = 0;
+ int is_phrase = 0;
+ int is_ccl_masked = 0;
size_t max = 200;
if (and_list || or_list || !multi)
max = 1;
-
+
/* ignore commas when dealing with and-lists .. */
if (and_list && lookahead && lookahead->kind == CCL_TOK_COMMA)
{
if (lookahead->name[i] == ' ')
this_is_phrase = 1;
+ if (has_ccl_masking(lookahead->name, lookahead->len,
+ truncation_aliases,
+ mask_aliases))
+ is_ccl_masked = 1;
+
if (auto_group)
{
if (no > 0 && (is_phrase || is_phrase != this_is_phrase))
if (len == 0)
break; /* no more terms . stop . */
-
- /* create the term node, but wait a moment before adding the term */
- p = ccl_rpn_node_create(CCL_RPN_TERM);
- p->u.t.attr_list = NULL;
- p->u.t.term = NULL;
- if (qa && qa[0])
- {
- const char *n = ccl_qual_get_name(qa[0]);
- if (n)
- p->u.t.qual = xstrdup(n);
- }
/* go through all attributes and add them to the attribute list */
- for (i=0; qa && qa[i]; i++)
+ for (i = 0; qa && qa[i]; i++)
{
struct ccl_rpn_attr *attr;
-
+
for (attr = ccl_qual_get_attr(qa[i]); attr; attr = attr->next)
- switch(attr->kind)
+ if (attr->type == 1)
{
- case CCL_RPN_ATTR_STRING:
- ccl_add_attr_string(p, attr->set, attr->type,
- attr->value.str);
- break;
- case CCL_RPN_ATTR_NUMERIC:
- if (attr->value.numeric > 0)
- { /* deal only with REAL attributes (positive) */
- switch (attr->type)
- {
- case CCL_BIB1_REL:
- if (relation_value != -1)
- continue;
- relation_value = attr->value.numeric;
- break;
- case CCL_BIB1_POS:
- if (position_value != -1)
- continue;
- position_value = attr->value.numeric;
- break;
- case CCL_BIB1_STR:
- if (structure_value != -1)
- continue;
- structure_value = attr->value.numeric;
- break;
- case CCL_BIB1_TRU:
- if (truncation_value != -1)
- continue;
- truncation_value = attr->value.numeric;
- break;
- case CCL_BIB1_COM:
- if (completeness_value != -1)
- continue;
- completeness_value = attr->value.numeric;
- break;
- }
- ccl_add_attr_numeric(p, attr->set, attr->type,
- attr->value.numeric);
+ struct ccl_rpn_node *tmp2;
+ tmp2 = ccl_term_one_use(cclp, attr, qa, no, len,
+ truncation_aliases, mask_aliases,
+ is_phrase, is_ccl_masked,
+ auto_group);
+ if (!tmp2)
+ {
+ ccl_rpn_delete(p);
+ return 0;
+ }
+ if (!p)
+ p = tmp2;
+ else
+ {
+ struct ccl_rpn_node *tmp1;
+ tmp1 = ccl_rpn_node_create(CCL_RPN_OR);
+ tmp1->u.p[0] = p;
+ tmp1->u.p[1] = tmp2;
+ p = tmp1;
}
}
}
- attset = 0;
- if (structure_value == -1 && (
- auto_group ||
- qual_val_type(qa, CCL_BIB1_STR, CCL_BIB1_STR_WP, &attset))
- )
- {
- if (!is_phrase)
- ccl_add_attr_numeric(p, attset, CCL_BIB1_STR, 2);
- else
- ccl_add_attr_numeric(p, attset, CCL_BIB1_STR, 1);
- }
-
- if (qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_REGEX,
- &attset))
+ if (!p)
{
- regex_trunc = 1; /* regex trunc (102) allowed */
- }
- else if (qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_Z3958,
- &attset))
- {
- z3958_trunc = 1; /* Z39.58 trunc (CCL) trunc allowed */
+ p = ccl_term_one_use(cclp, 0 /* attr: no use */, qa, no, len,
+ truncation_aliases, mask_aliases,
+ is_phrase, is_ccl_masked, auto_group);
+ if (!p)
+ return 0;
}
-
- /* make the RPN token */
- p->u.t.term = (char *)xmalloc(len * 2 + 2);
- ccl_assert(p->u.t.term);
- p->u.t.term[0] = '\0';
- for (i = 0; i<no; i++)
- {
- const char *src_str = cclp->look_token->name;
- size_t src_len = cclp->look_token->len;
-
- if (p->u.t.term[0] && cclp->look_token->ws_prefix_len)
- {
- strxcat(p->u.t.term, cclp->look_token->ws_prefix_buf,
- cclp->look_token->ws_prefix_len);
- }
- if (append_term(cclp, src_str, src_len, p->u.t.term, ®ex_trunc,
- &z3958_trunc, truncation_aliases, i == 0, i == no - 1,
- &left_trunc, &right_trunc))
- {
- ccl_rpn_delete(p);
- return NULL;
- }
+ for (i = 0; i < no; i++)
ADVANCE;
- }
/* make the top node point to us.. */
if (p_top)
{
else
p_top = p;
-
- if (left_trunc && right_trunc)
- {
- if (!qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_BOTH,
- &attset))
- {
- cclp->error_code = CCL_ERR_TRUNC_NOT_BOTH;
- ccl_rpn_delete(p);
- return NULL;
- }
- ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 3);
- }
- else if (right_trunc)
- {
- if (!qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_RIGHT,
- &attset))
- {
- cclp->error_code = CCL_ERR_TRUNC_NOT_RIGHT;
- ccl_rpn_delete(p);
- return NULL;
- }
- ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 1);
- }
- else if (left_trunc)
- {
- if (!qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_LEFT,
- &attset))
- {
- cclp->error_code = CCL_ERR_TRUNC_NOT_LEFT;
- ccl_rpn_delete(p);
- return NULL;
- }
- ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 2);
- }
- else if (regex_trunc == 2)
- {
- ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 102);
- }
- else if (z3958_trunc == 2)
- {
- ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 104);
- }
- else
- {
- if (qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_NONE,
- &attset))
- ccl_add_attr_numeric(p, attset, CCL_BIB1_TRU, 100);
- }
if (!multi)
break;
}
static int list[] = {
CCL_TOK_TERM, CCL_TOK_COMMA,CCL_TOK_EQ,
CCL_TOK_REL, CCL_TOK_SET, -1};
-
+
return search_term_x(cclp, qa, list, 1);
}
}
if (KIND == CCL_TOK_TERM)
{
size_t i;
+ int quote_mode = 0;
for (i = 0; i<cclp->look_token->len; i++)
{
- if (cclp->look_token->name[i] == '-')
+ if (i > 0 && cclp->look_token->name[i] == '\\')
+ ;
+ else if (cclp->look_token->name[i] == '"')
+ quote_mode = !quote_mode;
+ else if (cclp->look_token->name[i] == '-' && !quote_mode)
break;
}
-
+
if (cclp->look_token->len > 1 && i == 0)
{ /* -xx*/
struct ccl_token *ntoken = ccl_token_add(cclp->look_token);
cclp->look_token->next->kind == CCL_TOK_TERM &&
cclp->look_token->next->len > 1 &&
cclp->look_token->next->name[0] == '-')
-
+
{ /* xx -yy */
/* we _know_ that xx does not have - in it */
struct ccl_token *ntoken = ccl_token_add(cclp->look_token);
ntoken->len = 1;
(ntoken->next->name)++; /* adjust yy */
- (ntoken->next->len)--;
+ (ntoken->next->len)--;
}
}
}
-
+
if (rel == 3 &&
KIND == CCL_TOK_TERM &&
cclp->look_token->next && cclp->look_token->next->len == 1 &&
if (KIND == CCL_TOK_TERM) /* = term - term ? */
{
struct ccl_rpn_node *p2;
-
+
if (!(p2 = search_term(cclp, ap)))
{
ccl_rpn_delete(p1);
{
if (!(p = search_terms(cclp, ap)))
return NULL;
- ccl_add_attr_numeric(p, attset, CCL_BIB1_REL, rel);
+ if (rel != 3 ||
+ !qual_val_type(ap, CCL_BIB1_REL, CCL_BIB1_REL_OMIT_EQUALS, 0))
+ ccl_add_attr_numeric(p, attset, CCL_BIB1_REL, rel);
return p;
}
- cclp->error_code = CCL_ERR_TERM_EXPECTED;
return NULL;
}
struct ccl_rpn_node *qualifier_relation(CCL_parser cclp, ccl_qualifier_t *ap)
{
char *attset;
-
+
if (qual_val_type(ap, CCL_BIB1_REL, CCL_BIB1_REL_ORDER, &attset)
|| qual_val_type(ap, CCL_BIB1_REL, CCL_BIB1_REL_PORDER, &attset))
return qualifiers_order(cclp, ap, attset);
}
/**
- * qualifier_list: Parse CCL qualifiers and search terms.
+ * qualifier_list: Parse CCL qualifiers and search terms.
* cclp: CCL Parser
* la: Token pointer to RELATION token.
* qa: Qualifier attributes already applied.
* return: pointer to node(s); NULL on error.
*/
-static struct ccl_rpn_node *qualifier_list(CCL_parser cclp,
+static struct ccl_rpn_node *qualifier_list(CCL_parser cclp,
struct ccl_token *la,
ccl_qualifier_t *qa)
{
{
struct ccl_rpn_node *node_sub;
cclp->look_token = la;
-
+
node_sub = qualifier_relation(cclp, ap);
if (!node_sub)
{
}
if (node)
{
- struct ccl_rpn_node *node_this =
+ struct ccl_rpn_node *node_this =
ccl_rpn_node_create(CCL_RPN_OR);
node_this->u.p[0] = node;
node_this->u.p[1] = node_sub;
if (qa)
{
ccl_qualifier_t *qa0 = qa;
-
+
while (*qa0)
ap[i++] = *qa0++;
}
ap[i] = NULL;
-
+
if (!found)
break;
-
+
cclp->look_token = lookahead;
-
+
node_sub = qualifier_relation(cclp, ap);
if (!node_sub)
{
}
if (node)
{
- struct ccl_rpn_node *node_this =
+ struct ccl_rpn_node *node_this =
ccl_rpn_node_create(CCL_RPN_OR);
node_this->u.p[0] = node;
node_this->u.p[1] = node_sub;
}
if (node)
{
- struct ccl_rpn_node *node_this =
+ struct ccl_rpn_node *node_this =
ccl_rpn_node_create(CCL_RPN_OR);
node_this->u.p[0] = node;
node_this->u.p[1] = node_sub;
return p;
}
-struct ccl_rpn_node *ccl_parser_find_token(CCL_parser cclp,
+struct ccl_rpn_node *ccl_parser_find_token(CCL_parser cclp,
struct ccl_token *list)
{
struct ccl_rpn_node *p;
projects / yaz-moved-to-github.git / blobdiff