/* This file is part of the YAZ toolkit.
- * Copyright (C) 1995-2013 Index Data
+ * Copyright (C) Index Data
* See the file LICENSE for details.
*/
/**
#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);
}
}
return 0;
}
-/**
- * search_term: Parse CCL search term.
- * cclp: CCL Parser
- * qa: Qualifier attributes already applied.
- * term_list: tokens we accept as terms in context
- * multi: whether we accept "multiple" tokens
- * return: pointer to node(s); NULL on error.
- */
-static struct ccl_rpn_node *search_term_x(CCL_parser cclp,
- ccl_qualifier_t *qa,
- int *term_list, int multi)
+
+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,
+ int is_phrase,
+ int auto_group)
{
- struct ccl_rpn_node *p_top = 0;
- struct ccl_token *lookahead = cclp->look_token;
- int and_list = 0;
- int auto_group = 0;
- int or_list = 0;
+ 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;
+ int is_ccl_masked = 0;
char *attset;
+ struct ccl_token *lookahead = cclp->look_token;
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;
}
- 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))
- auto_group = 1;
- if (qual_val_type(qa, CCL_BIB1_STR, CCL_BIB1_STR_OR_LIST, 0))
- or_list = 1;
- while (1)
+ mask_aliases =
+ ccl_qual_search_special(cclp->bibset, "mask");
+ if (!mask_aliases)
{
- struct ccl_rpn_node *p;
- 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;
- 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)
- {
- lookahead = lookahead->next;
- ADVANCE;
- continue;
- }
- for (no = 0; no < max && is_term_ok(lookahead->kind, term_list); no++)
- {
- int this_is_phrase = 0;
- for (i = 0; i<lookahead->len; i++)
- if (lookahead->name[i] == ' ')
- this_is_phrase = 1;
-
- if (auto_group)
- {
- if (no > 0 && (is_phrase || is_phrase != this_is_phrase))
- break;
- is_phrase = this_is_phrase;
- }
- else if (this_is_phrase || no > 0)
- is_phrase = 1;
- len += 1+lookahead->len+lookahead->ws_prefix_len;
- lookahead = lookahead->next;
- }
-
- if (len == 0)
- break; /* no more terms . stop . */
+ mask_aliases = m_default;
+ m_default[0] = "#";
+ m_default[1] = 0;
+ }
- /* 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++)
- {
- struct ccl_rpn_attr *attr;
+ for (i = 0; i < no; i++)
+ {
+ if (has_ccl_masking(lookahead->name, lookahead->len,
+ truncation_aliases,
+ mask_aliases))
+ is_ccl_masked = 1;
+ lookahead = lookahead->next;
+ }
+ lookahead = cclp->look_token;
- for (attr = ccl_qual_get_attr(qa[i]); attr; attr = attr->next)
- switch(attr->kind)
+ 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.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);
}
- attset = 0;
- if (structure_value == -1 && (
- auto_group ||
- qual_val_type(qa, CCL_BIB1_STR, CCL_BIB1_STR_WP, &attset))
- )
+ 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))
{
- if (!is_phrase)
- ccl_add_attr_numeric(p, attset, CCL_BIB1_STR, 2);
- else
- ccl_add_attr_numeric(p, attset, CCL_BIB1_STR, 1);
+ ccl_rpn_delete(p);
+ return NULL;
}
-
- if (qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_REGEX,
- &attset))
+ lookahead = lookahead->next;
+ }
+ if (left_trunc && right_trunc)
+ {
+ if (!qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_BOTH,
+ &attset))
{
- regex_trunc = 1; /* regex trunc (102) allowed */
+ cclp->error_code = CCL_ERR_TRUNC_NOT_BOTH;
+ ccl_rpn_delete(p);
+ return NULL;
}
- else if (qual_val_type(qa, CCL_BIB1_TRU, CCL_BIB1_TRU_CAN_Z3958,
- &attset))
+ 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))
{
- z3958_trunc = 1; /* Z39.58 trunc (CCL) trunc allowed */
+ cclp->error_code = CCL_ERR_TRUNC_NOT_RIGHT;
+ ccl_rpn_delete(p);
+ return NULL;
}
-
- /* 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++)
+ 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))
{
- const char *src_str = cclp->look_token->name;
- size_t src_len = cclp->look_token->len;
+ 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;
+}
- 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))
+/**
+ * search_term: Parse CCL search term.
+ * cclp: CCL Parser
+ * qa: Qualifier attributes already applied.
+ * term_list: tokens we accept as terms in context
+ * multi: whether we accept "multiple" tokens
+ * return: pointer to node(s); NULL on error.
+ */
+static struct ccl_rpn_node *search_term_x(CCL_parser cclp,
+ ccl_qualifier_t *qa,
+ int *term_list, int multi)
+{
+ struct ccl_rpn_node *p_top = 0;
+ struct ccl_token *lookahead = cclp->look_token;
+ int and_list = 0;
+ int auto_group = 0;
+ int or_list = 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))
+ auto_group = 1;
+ if (qual_val_type(qa, CCL_BIB1_STR, CCL_BIB1_STR_OR_LIST, 0))
+ or_list = 1;
+ while (1)
+ {
+ struct ccl_rpn_node *p = 0;
+ size_t no, i;
+ int len = 0;
+ int is_phrase = 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)
+ {
+ lookahead = lookahead->next;
+ ADVANCE;
+ continue;
+ }
+ for (no = 0; no < max && is_term_ok(lookahead->kind, term_list); no++)
+ {
+ int this_is_phrase = 0;
+ for (i = 0; i<lookahead->len; i++)
+ if (lookahead->name[i] == ' ')
+ this_is_phrase = 1;
+ if (auto_group)
{
- ccl_rpn_delete(p);
- return NULL;
+ if (no > 0 && (is_phrase || is_phrase != this_is_phrase))
+ break;
+ is_phrase = this_is_phrase;
}
- ADVANCE;
+ else if (this_is_phrase || no > 0)
+ is_phrase = 1;
+ len += 1+lookahead->len+lookahead->ws_prefix_len;
+ lookahead = lookahead->next;
}
+
+ if (len == 0)
+ break; /* no more terms . stop . */
+
+ /* 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)
+ {
+ struct ccl_rpn_node *tmp2;
+ tmp2 = ccl_term_one_use(cclp, attr, qa, no, len,
+ is_phrase,
+ 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;
+ }
+ }
+ }
+ if (!p)
+ p = ccl_term_one_use(cclp, 0 /* attr: no use */, qa, no, len,
+ is_phrase, auto_group);
+ for (i = 0; i < no; i++)
+ ADVANCE;
+ if (!p)
+ return 0;
/* 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;
}
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 (!(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;
}
projects / yaz-moved-to-github.git / blobdiff