/* $Id: zrpn.c,v 1.141.2.6 2005/01/23 15:06:21 adam Exp $
Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
Index Data Aps
This file is part of the Zebra server.
Zebra is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Zebra; see the file LICENSE.zebra. If not, write to the
Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/
#include <stdio.h>
#include <assert.h>
#ifdef WIN32
#include <io.h>
#else
#include <unistd.h>
#endif
#include <ctype.h>
#include "index.h"
#include <zebra_xpath.h>
#include <charmap.h>
#include <rstemp.h>
#include <rsnull.h>
#include <rsbool.h>
#include <rsbetween.h>
#include <rsprox.h>
struct rpn_char_map_info {
ZebraMaps zm;
int reg_type;
};
typedef struct {
int type;
int major;
int minor;
Z_AttributesPlusTerm *zapt;
} AttrType;
static const char **rpn_char_map_handler(void *vp, const char **from, int len)
{
struct rpn_char_map_info *p = (struct rpn_char_map_info *) vp;
const char **out = zebra_maps_input(p->zm, p->reg_type, from, len, 0);
#if 0
if (out && *out)
{
const char *outp = *out;
yaz_log(LOG_LOG, "---");
while (*outp)
{
yaz_log(LOG_LOG, "%02X", *outp);
outp++;
}
}
#endif
return out;
}
static void rpn_char_map_prepare(struct zebra_register *reg, int reg_type,
struct rpn_char_map_info *map_info)
{
map_info->zm = reg->zebra_maps;
map_info->reg_type = reg_type;
dict_grep_cmap(reg->dict, map_info, rpn_char_map_handler);
}
static int attr_find_ex(AttrType *src, oid_value *attributeSetP,
const char **string_value)
{
int num_attributes;
num_attributes = src->zapt->attributes->num_attributes;
while (src->major < num_attributes)
{
Z_AttributeElement *element;
element = src->zapt->attributes->attributes[src->major];
if (src->type == *element->attributeType)
{
switch (element->which)
{
case Z_AttributeValue_numeric:
++(src->major);
if (element->attributeSet && attributeSetP)
{
oident *attrset;
attrset = oid_getentbyoid(element->attributeSet);
*attributeSetP = attrset->value;
}
return *element->value.numeric;
break;
case Z_AttributeValue_complex:
if (src->minor >= element->value.complex->num_list)
break;
if (element->attributeSet && attributeSetP)
{
oident *attrset;
attrset = oid_getentbyoid(element->attributeSet);
*attributeSetP = attrset->value;
}
if (element->value.complex->list[src->minor]->which ==
Z_StringOrNumeric_numeric)
{
++(src->minor);
return
*element->value.complex->list[src->minor-1]->u.numeric;
}
else if (element->value.complex->list[src->minor]->which ==
Z_StringOrNumeric_string)
{
if (!string_value)
break;
++(src->minor);
*string_value =
element->value.complex->list[src->minor-1]->u.string;
return -2;
}
else
break;
default:
assert(0);
}
}
++(src->major);
}
return -1;
}
static int attr_find(AttrType *src, oid_value *attributeSetP)
{
return attr_find_ex(src, attributeSetP, 0);
}
static void attr_init(AttrType *src, Z_AttributesPlusTerm *zapt,
int type)
{
src->zapt = zapt;
src->type = type;
src->major = 0;
src->minor = 0;
}
#define TERM_COUNT
struct grep_info {
#ifdef TERM_COUNT
int *term_no;
#endif
ISAMS_P *isam_p_buf;
int isam_p_size;
int isam_p_indx;
ZebraHandle zh;
int reg_type;
ZebraSet termset;
};
static void term_untrans(ZebraHandle zh, int reg_type,
char *dst, const char *src)
{
int len = 0;
while (*src)
{
const char *cp = zebra_maps_output(zh->reg->zebra_maps,
reg_type, &src);
if (!cp && len < IT_MAX_WORD-1)
dst[len++] = *src++;
else
while (*cp && len < IT_MAX_WORD-1)
dst[len++] = *cp++;
}
dst[len] = '\0';
}
static void add_isam_p(const char *name, const char *info,
struct grep_info *p)
{
if (p->isam_p_indx == p->isam_p_size)
{
ISAMS_P *new_isam_p_buf;
#ifdef TERM_COUNT
int *new_term_no;
#endif
p->isam_p_size = 2*p->isam_p_size + 100;
new_isam_p_buf = (ISAMS_P *) xmalloc(sizeof(*new_isam_p_buf) *
p->isam_p_size);
if (p->isam_p_buf)
{
memcpy(new_isam_p_buf, p->isam_p_buf,
p->isam_p_indx * sizeof(*p->isam_p_buf));
xfree(p->isam_p_buf);
}
p->isam_p_buf = new_isam_p_buf;
#ifdef TERM_COUNT
new_term_no = (int *) xmalloc(sizeof(*new_term_no) *
p->isam_p_size);
if (p->term_no)
{
memcpy(new_term_no, p->isam_p_buf,
p->isam_p_indx * sizeof(*p->term_no));
xfree(p->term_no);
}
p->term_no = new_term_no;
#endif
}
assert(*info == sizeof(*p->isam_p_buf));
memcpy(p->isam_p_buf + p->isam_p_indx, info+1, sizeof(*p->isam_p_buf));
#if 1
if (p->termset)
{
const char *db;
int set, use;
char term_tmp[IT_MAX_WORD];
int su_code = 0;
int len = key_SU_decode(&su_code, name);
term_untrans(p->zh, p->reg_type, term_tmp, name+len+1);
yaz_log(LOG_LOG, "grep: %d %c %s", su_code, name[len], term_tmp);
zebraExplain_lookup_ord(p->zh->reg->zei,
su_code, &db, &set, &use);
yaz_log(LOG_LOG, "grep: set=%d use=%d db=%s", set, use, db);
resultSetAddTerm(p->zh, p->termset, name[len], db,
set, use, term_tmp);
}
#endif
(p->isam_p_indx)++;
}
static int grep_handle(char *name, const char *info, void *p)
{
add_isam_p(name, info, (struct grep_info *) p);
return 0;
}
static int term_pre(ZebraMaps zebra_maps, int reg_type, const char **src,
const char *ct1, const char *ct2, int first)
{
const char *s1, *s0 = *src;
const char **map;
/* skip white space */
while (*s0)
{
if (ct1 && strchr(ct1, *s0))
break;
if (ct2 && strchr(ct2, *s0))
break;
s1 = s0;
map = zebra_maps_input(zebra_maps, reg_type, &s1, strlen(s1), first);
if (**map != *CHR_SPACE)
break;
s0 = s1;
}
*src = s0;
return *s0;
}
#define REGEX_CHARS " []()|.*+?!"
/* term_100: handle term, where trunc=none(no operators at all) */
static int term_100(ZebraMaps zebra_maps, int reg_type,
const char **src, char *dst, int space_split,
char *dst_term)
{
const char *s0, *s1;
const char **map;
int i = 0;
int j = 0;
const char *space_start = 0;
const char *space_end = 0;
if (!term_pre(zebra_maps, reg_type, src, NULL, NULL, !space_split))
return 0;
s0 = *src;
while (*s0)
{
s1 = s0;
map = zebra_maps_input(zebra_maps, reg_type, &s0, strlen(s0), 0);
if (space_split)
{
if (**map == *CHR_SPACE)
break;
}
else /* complete subfield only. */
{
if (**map == *CHR_SPACE)
{ /* save space mapping for later .. */
space_start = s1;
space_end = s0;
continue;
}
else if (space_start)
{ /* reload last space */
while (space_start < space_end)
{
if (strchr(REGEX_CHARS, *space_start))
dst[i++] = '\\';
dst_term[j++] = *space_start;
dst[i++] = *space_start++;
}
/* and reset */
space_start = space_end = 0;
}
}
/* add non-space char */
while (s1 < s0)
{
if (strchr(REGEX_CHARS, *s1))
dst[i++] = '\\';
dst_term[j++] = *s1;
dst[i++] = *s1++;
}
}
dst[i] = '\0';
dst_term[j] = '\0';
*src = s0;
return i;
}
/* term_101: handle term, where trunc=Process # */
static int term_101(ZebraMaps zebra_maps, int reg_type,
const char **src, char *dst, int space_split,
char *dst_term)
{
const char *s0, *s1;
const char **map;
int i = 0;
int j = 0;
if (!term_pre(zebra_maps, reg_type, src, "#", "#", !space_split))
return 0;
s0 = *src;
while (*s0)
{
if (*s0 == '#')
{
dst[i++] = '.';
dst[i++] = '*';
dst_term[j++] = *s0++;
}
else
{
s1 = s0;
map = zebra_maps_input(zebra_maps, reg_type, &s0, strlen(s0), 0);
if (space_split && **map == *CHR_SPACE)
break;
while (s1 < s0)
{
if (strchr(REGEX_CHARS, *s1))
dst[i++] = '\\';
dst_term[j++] = *s1;
dst[i++] = *s1++;
}
}
}
dst[i] = '\0';
dst_term[j++] = '\0';
*src = s0;
return i;
}
/* term_103: handle term, where trunc=re-2 (regular expressions) */
static int term_103(ZebraMaps zebra_maps, int reg_type, const char **src,
char *dst, int *errors, int space_split,
char *dst_term)
{
int i = 0;
int j = 0;
const char *s0, *s1;
const char **map;
if (!term_pre(zebra_maps, reg_type, src, "^\\()[].*+?|", "(", !space_split))
return 0;
s0 = *src;
if (errors && *s0 == '+' && s0[1] && s0[2] == '+' && s0[3] &&
isdigit(s0[1]))
{
*errors = s0[1] - '0';
s0 += 3;
if (*errors > 3)
*errors = 3;
}
while (*s0)
{
if (strchr("^\\()[].*+?|-", *s0))
{
dst_term[j++] = *s0;
dst[i++] = *s0++;
}
else
{
s1 = s0;
map = zebra_maps_input(zebra_maps, reg_type, &s0, strlen(s0), 0);
if (**map == *CHR_SPACE)
break;
while (s1 < s0)
{
if (strchr(REGEX_CHARS, *s1))
dst[i++] = '\\';
dst_term[j++] = *s1;
dst[i++] = *s1++;
}
}
}
dst[i] = '\0';
dst_term[j] = '\0';
*src = s0;
return i;
}
/* term_103: handle term, where trunc=re-1 (regular expressions) */
static int term_102 (ZebraMaps zebra_maps, int reg_type, const char **src,
char *dst, int space_split, char *dst_term)
{
return term_103(zebra_maps, reg_type, src, dst, NULL, space_split,
dst_term);
}
/* term_104: handle term, where trunc=Process # and ! */
static int term_104(ZebraMaps zebra_maps, int reg_type,
const char **src, char *dst, int space_split,
char *dst_term)
{
const char *s0, *s1;
const char **map;
int i = 0;
int j = 0;
if (!term_pre(zebra_maps, reg_type, src, "?*#", "?*#", !space_split))
return 0;
s0 = *src;
while (*s0)
{
if (*s0 == '?')
{
dst_term[j++] = *s0++;
if (*s0 >= '0' && *s0 <= '9')
{
int limit = 0;
while (*s0 >= '0' && *s0 <= '9')
{
limit = limit * 10 + (*s0 - '0');
dst_term[j++] = *s0++;
}
if (limit > 20)
limit = 20;
while (--limit >= 0)
{
dst[i++] = '.';
dst[i++] = '?';
}
}
else
{
dst[i++] = '.';
dst[i++] = '*';
}
}
else if (*s0 == '*')
{
dst[i++] = '.';
dst[i++] = '*';
dst_term[j++] = *s0++;
}
else if (*s0 == '#')
{
dst[i++] = '.';
dst_term[j++] = *s0++;
}
{
s1 = s0;
map = zebra_maps_input(zebra_maps, reg_type, &s0, strlen(s0), 0);
if (space_split && **map == *CHR_SPACE)
break;
while (s1 < s0)
{
if (strchr(REGEX_CHARS, *s1))
dst[i++] = '\\';
dst_term[j++] = *s1;
dst[i++] = *s1++;
}
}
}
dst[i] = '\0';
dst_term[j++] = '\0';
*src = s0;
return i;
}
/* term_105/106: handle term, where trunc=Process * and ! and right trunc */
static int term_105 (ZebraMaps zebra_maps, int reg_type,
const char **src, char *dst, int space_split,
char *dst_term, int right_truncate)
{
const char *s0, *s1;
const char **map;
int i = 0;
int j = 0;
if (!term_pre(zebra_maps, reg_type, src, "*!", "*!", !space_split))
return 0;
s0 = *src;
while (*s0)
{
if (*s0 == '*')
{
dst[i++] = '.';
dst[i++] = '*';
dst_term[j++] = *s0++;
}
else if (*s0 == '!')
{
dst[i++] = '.';
dst_term[j++] = *s0++;
}
{
s1 = s0;
map = zebra_maps_input(zebra_maps, reg_type, &s0, strlen(s0), 0);
if (space_split && **map == *CHR_SPACE)
break;
while (s1 < s0)
{
if (strchr(REGEX_CHARS, *s1))
dst[i++] = '\\';
dst_term[j++] = *s1;
dst[i++] = *s1++;
}
}
}
if (right_truncate)
{
dst[i++] = '.';
dst[i++] = '*';
}
dst[i] = '\0';
dst_term[j++] = '\0';
*src = s0;
return i;
}
/* gen_regular_rel - generate regular expression from relation
* val: border value (inclusive)
* islt: 1 if <=; 0 if >=.
*/
static void gen_regular_rel(char *dst, int val, int islt)
{
int dst_p;
int w, d, i;
int pos = 0;
char numstr[20];
yaz_log(LOG_DEBUG, "gen_regular_rel. val=%d, islt=%d", val, islt);
if (val >= 0)
{
if (islt)
strcpy(dst, "(-[0-9]+|(");
else
strcpy(dst, "((");
}
else
{
if (!islt)
{
strcpy(dst, "([0-9]+|-(");
dst_p = strlen(dst);
islt = 1;
}
else
{
strcpy(dst, "(-(");
islt = 0;
}
val = -val;
}
dst_p = strlen(dst);
sprintf(numstr, "%d", val);
for (w = strlen(numstr); --w >= 0; pos++)
{
d = numstr[w];
if (pos > 0)
{
if (islt)
{
if (d == '0')
continue;
d--;
}
else
{
if (d == '9')
continue;
d++;
}
}
strcpy(dst + dst_p, numstr);
dst_p = strlen(dst) - pos - 1;
if (islt)
{
if (d != '0')
{
dst[dst_p++] = '[';
dst[dst_p++] = '0';
dst[dst_p++] = '-';
dst[dst_p++] = d;
dst[dst_p++] = ']';
}
else
dst[dst_p++] = d;
}
else
{
if (d != '9')
{
dst[dst_p++] = '[';
dst[dst_p++] = d;
dst[dst_p++] = '-';
dst[dst_p++] = '9';
dst[dst_p++] = ']';
}
else
dst[dst_p++] = d;
}
for (i = 0; i<pos; i++)
{
dst[dst_p++] = '[';
dst[dst_p++] = '0';
dst[dst_p++] = '-';
dst[dst_p++] = '9';
dst[dst_p++] = ']';
}
dst[dst_p++] = '|';
}
dst[dst_p] = '\0';
if (islt)
{
/* match everything less than 10^(pos-1) */
strcat(dst, "0*");
for (i = 1; i<pos; i++)
strcat(dst, "[0-9]?");
}
else
{
/* match everything greater than 10^pos */
for (i = 0; i <= pos; i++)
strcat(dst, "[0-9]");
strcat(dst, "[0-9]*");
}
strcat(dst, "))");
}
void string_rel_add_char(char **term_p, const char *src, int *indx)
{
if (src[*indx] == '\\')
*(*term_p)++ = src[(*indx)++];
*(*term_p)++ = src[(*indx)++];
}
/*
* > abc ([b-].*|a[c-].*|ab[d-].*|abc.+)
* ([^-a].*|a[^-b].*ab[^-c].*|abc.+)
* >= abc ([b-].*|a[c-].*|ab[c-].*)
* ([^-a].*|a[^-b].*|ab[c-].*)
* < abc ([-0].*|a[-a].*|ab[-b].*)
* ([^a-].*|a[^b-].*|ab[^c-].*)
* <= abc ([-0].*|a[-a].*|ab[-b].*|abc)
* ([^a-].*|a[^b-].*|ab[^c-].*|abc)
*/
static int string_relation(ZebraHandle zh, Z_AttributesPlusTerm *zapt,
const char **term_sub, char *term_dict,
oid_value attributeSet,
int reg_type, int space_split, char *term_dst)
{
AttrType relation;
int relation_value;
int i;
char *term_tmp = term_dict + strlen(term_dict);
char term_component[2*IT_MAX_WORD+20];
attr_init(&relation, zapt, 2);
relation_value = attr_find(&relation, NULL);
yaz_log(LOG_DEBUG, "string relation value=%d", relation_value);
switch (relation_value)
{
case 1:
if (!term_100 (zh->reg->zebra_maps, reg_type,
term_sub, term_component,
space_split, term_dst))
return 0;
yaz_log(LOG_DEBUG, "Relation <");
*term_tmp++ = '(';
for (i = 0; term_component[i]; )
{
int j = 0;
if (i)
*term_tmp++ = '|';
while (j < i)
string_rel_add_char (&term_tmp, term_component, &j);
*term_tmp++ = '[';
*term_tmp++ = '^';
string_rel_add_char (&term_tmp, term_component, &i);
*term_tmp++ = '-';
*term_tmp++ = ']';
*term_tmp++ = '.';
*term_tmp++ = '*';
if ((term_tmp - term_dict) > IT_MAX_WORD)
break;
}
*term_tmp++ = ')';
*term_tmp = '\0';
break;
case 2:
if (!term_100 (zh->reg->zebra_maps, reg_type,
term_sub, term_component,
space_split, term_dst))
return 0;
yaz_log(LOG_DEBUG, "Relation <=");
*term_tmp++ = '(';
for (i = 0; term_component[i]; )
{
int j = 0;
while (j < i)
string_rel_add_char (&term_tmp, term_component, &j);
*term_tmp++ = '[';
*term_tmp++ = '^';
string_rel_add_char (&term_tmp, term_component, &i);
*term_tmp++ = '-';
*term_tmp++ = ']';
*term_tmp++ = '.';
*term_tmp++ = '*';
*term_tmp++ = '|';
if ((term_tmp - term_dict) > IT_MAX_WORD)
break;
}
for (i = 0; term_component[i]; )
string_rel_add_char (&term_tmp, term_component, &i);
*term_tmp++ = ')';
*term_tmp = '\0';
break;
case 5:
if (!term_100 (zh->reg->zebra_maps, reg_type,
term_sub, term_component, space_split, term_dst))
return 0;
yaz_log(LOG_DEBUG, "Relation >");
*term_tmp++ = '(';
for (i = 0; term_component[i];)
{
int j = 0;
while (j < i)
string_rel_add_char (&term_tmp, term_component, &j);
*term_tmp++ = '[';
*term_tmp++ = '^';
*term_tmp++ = '-';
string_rel_add_char (&term_tmp, term_component, &i);
*term_tmp++ = ']';
*term_tmp++ = '.';
*term_tmp++ = '*';
*term_tmp++ = '|';
if ((term_tmp - term_dict) > IT_MAX_WORD)
break;
}
for (i = 0; term_component[i];)
string_rel_add_char (&term_tmp, term_component, &i);
*term_tmp++ = '.';
*term_tmp++ = '+';
*term_tmp++ = ')';
*term_tmp = '\0';
break;
case 4:
if (!term_100 (zh->reg->zebra_maps, reg_type, term_sub,
term_component, space_split, term_dst))
return 0;
yaz_log(LOG_DEBUG, "Relation >=");
*term_tmp++ = '(';
for (i = 0; term_component[i];)
{
int j = 0;
if (i)
*term_tmp++ = '|';
while (j < i)
string_rel_add_char (&term_tmp, term_component, &j);
*term_tmp++ = '[';
if (term_component[i+1])
{
*term_tmp++ = '^';
*term_tmp++ = '-';
string_rel_add_char (&term_tmp, term_component, &i);
}
else
{
string_rel_add_char (&term_tmp, term_component, &i);
*term_tmp++ = '-';
}
*term_tmp++ = ']';
*term_tmp++ = '.';
*term_tmp++ = '*';
if ((term_tmp - term_dict) > IT_MAX_WORD)
break;
}
*term_tmp++ = ')';
*term_tmp = '\0';
break;
case 3:
default:
yaz_log(LOG_DEBUG, "Relation =");
if (!term_100 (zh->reg->zebra_maps, reg_type, term_sub,
term_component, space_split, term_dst))
return 0;
strcat (term_tmp, "(");
strcat (term_tmp, term_component);
strcat (term_tmp, ")");
}
return 1;
}
static int string_term (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
const char **term_sub,
oid_value attributeSet, NMEM stream,
struct grep_info *grep_info,
int reg_type, int complete_flag,
int num_bases, char **basenames,
char *term_dst, int xpath_use);
static RSET term_trunc (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
const char **term_sub,
oid_value attributeSet, NMEM stream,
struct grep_info *grep_info,
int reg_type, int complete_flag,
int num_bases, char **basenames,
char *term_dst,
const char *rank_type, int xpath_use)
{
int r;
grep_info->isam_p_indx = 0;
r = string_term (zh, zapt, term_sub, attributeSet, stream, grep_info,
reg_type, complete_flag, num_bases, basenames,
term_dst, xpath_use);
if (r < 1)
return 0;
yaz_log(LOG_DEBUG, "term: %s", term_dst);
return rset_trunc (zh, grep_info->isam_p_buf,
grep_info->isam_p_indx, term_dst,
strlen(term_dst), rank_type, 1 /* preserve pos */,
zapt->term->which);
}
static char *nmem_strdup_i(NMEM nmem, int v)
{
char val_str[64];
sprintf (val_str, "%d", v);
return nmem_strdup (nmem, val_str);
}
static int string_term (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
const char **term_sub,
oid_value attributeSet, NMEM stream,
struct grep_info *grep_info,
int reg_type, int complete_flag,
int num_bases, char **basenames,
char *term_dst, int xpath_use)
{
char term_dict[2*IT_MAX_WORD+4000];
int j, r, base_no;
AttrType truncation;
int truncation_value;
AttrType use;
int use_value;
const char *use_string = 0;
oid_value curAttributeSet = attributeSet;
const char *termp;
struct rpn_char_map_info rcmi;
int space_split = complete_flag ? 0 : 1;
int bases_ok = 0; /* no of databases with OK attribute */
int errCode = 0; /* err code (if any is not OK) */
char *errString = 0; /* addinfo */
rpn_char_map_prepare (zh->reg, reg_type, &rcmi);
attr_init (&use, zapt, 1);
use_value = attr_find_ex (&use, &curAttributeSet, &use_string);
yaz_log(LOG_DEBUG, "string_term, use value %d", use_value);
attr_init (&truncation, zapt, 5);
truncation_value = attr_find (&truncation, NULL);
yaz_log(LOG_DEBUG, "truncation value %d", truncation_value);
if (use_value == -1) /* no attribute - assumy "any" */
use_value = 1016;
for (base_no = 0; base_no < num_bases; base_no++)
{
int attr_ok = 0;
int regex_range = 0;
int init_pos = 0;
attent attp;
data1_local_attribute id_xpath_attr;
data1_local_attribute *local_attr;
int max_pos, prefix_len = 0;
termp = *term_sub;
if (zebraExplain_curDatabase (zh->reg->zei, basenames[base_no]))
{
zh->errCode = 109; /* Database unavailable */
zh->errString = basenames[base_no];
return -1;
}
if (xpath_use > 0 && use_value == -2)
{
use_value = xpath_use;
attp.local_attributes = &id_xpath_attr;
attp.attset_ordinal = VAL_IDXPATH;
id_xpath_attr.next = 0;
id_xpath_attr.local = use_value;
}
else if (curAttributeSet == VAL_IDXPATH)
{
attp.local_attributes = &id_xpath_attr;
attp.attset_ordinal = VAL_IDXPATH;
id_xpath_attr.next = 0;
id_xpath_attr.local = use_value;
}
else
{
if ((r=att_getentbyatt (zh, &attp, curAttributeSet, use_value,
use_string)))
{
yaz_log(LOG_DEBUG, "att_getentbyatt fail. set=%d use=%d r=%d",
curAttributeSet, use_value, r);
if (r == -1)
{
/* set was found, but value wasn't defined */
errCode = 114;
if (use_string)
errString = nmem_strdup(stream, use_string);
else
errString = nmem_strdup_i(stream, use_value);
}
else
{
int oid[OID_SIZE];
struct oident oident;
oident.proto = PROTO_Z3950;
oident.oclass = CLASS_ATTSET;
oident.value = curAttributeSet;
oid_ent_to_oid (&oident, oid);
errCode = 121;
errString = nmem_strdup (stream, oident.desc);
}
continue;
}
}
for (local_attr = attp.local_attributes; local_attr;
local_attr = local_attr->next)
{
int ord;
char ord_buf[32];
int i, ord_len;
ord = zebraExplain_lookupSU (zh->reg->zei, attp.attset_ordinal,
local_attr->local);
if (ord < 0)
continue;
if (prefix_len)
term_dict[prefix_len++] = '|';
else
term_dict[prefix_len++] = '(';
ord_len = key_SU_encode (ord, ord_buf);
for (i = 0; i<ord_len; i++)
{
term_dict[prefix_len++] = 1;
term_dict[prefix_len++] = ord_buf[i];
}
}
if (!prefix_len)
{
#if 1
bases_ok++;
#else
errCode = 114;
errString = nmem_strdup_i(stream, use_value);
continue;
#endif
}
else
{
attr_ok = 1;
bases_ok++; /* this has OK attributes */
}
term_dict[prefix_len++] = ')';
term_dict[prefix_len++] = 1;
term_dict[prefix_len++] = reg_type;
yaz_log(LOG_DEBUG, "reg_type = %d", term_dict[prefix_len-1]);
term_dict[prefix_len] = '\0';
j = prefix_len;
switch (truncation_value)
{
case -1: /* not specified */
case 100: /* do not truncate */
if (!string_relation (zh, zapt, &termp, term_dict,
attributeSet,
reg_type, space_split, term_dst))
return 0;
break;
case 1: /* right truncation */
term_dict[j++] = '(';
if (!term_100 (zh->reg->zebra_maps, reg_type,
&termp, term_dict + j, space_split, term_dst))
return 0;
strcat (term_dict, ".*)");
break;
case 2: /* keft truncation */
term_dict[j++] = '('; term_dict[j++] = '.'; term_dict[j++] = '*';
if (!term_100 (zh->reg->zebra_maps, reg_type,
&termp, term_dict + j, space_split, term_dst))
return 0;
strcat (term_dict, ")");
break;
case 3: /* left&right truncation */
term_dict[j++] = '('; term_dict[j++] = '.'; term_dict[j++] = '*';
if (!term_100 (zh->reg->zebra_maps, reg_type,
&termp, term_dict + j, space_split, term_dst))
return 0;
strcat (term_dict, ".*)");
break;
case 101: /* process # in term */
term_dict[j++] = '(';
if (!term_101 (zh->reg->zebra_maps, reg_type,
&termp, term_dict + j, space_split, term_dst))
return 0;
strcat (term_dict, ")");
break;
case 102: /* Regexp-1 */
term_dict[j++] = '(';
if (!term_102 (zh->reg->zebra_maps, reg_type,
&termp, term_dict + j, space_split, term_dst))
return 0;
strcat (term_dict, ")");
break;
case 103: /* Regexp-2 */
r = 1;
term_dict[j++] = '(';
init_pos = 2;
if (!term_103 (zh->reg->zebra_maps, reg_type,
&termp, term_dict + j, ®ex_range,
space_split, term_dst))
return 0;
strcat (term_dict, ")");
break;
case 104: /* process # and ! in term */
term_dict[j++] = '(';
if (!term_104 (zh->reg->zebra_maps, reg_type,
&termp, term_dict + j, space_split, term_dst))
return 0;
strcat (term_dict, ")");
break;
case 105: /* process * and ! in term */
term_dict[j++] = '(';
if (!term_105 (zh->reg->zebra_maps, reg_type,
&termp, term_dict + j, space_split, term_dst, 1))
return 0;
strcat (term_dict, ")");
break;
case 106: /* process * and ! in term */
term_dict[j++] = '(';
if (!term_105 (zh->reg->zebra_maps, reg_type,
&termp, term_dict + j, space_split, term_dst, 0))
return 0;
strcat (term_dict, ")");
break;
default:
zh->errCode = 120;
zh->errString = nmem_strdup_i(stream, truncation_value);
return -1;
}
if (attr_ok)
{
yaz_log(LOG_DEBUG, "dict_lookup_grep: %s", term_dict+prefix_len);
r = dict_lookup_grep (zh->reg->dict, term_dict, regex_range,
grep_info, &max_pos, init_pos,
grep_handle);
if (r)
yaz_log(LOG_WARN, "dict_lookup_grep fail %d", r);
}
}
if (!bases_ok)
{
zh->errCode = errCode;
zh->errString = errString;
return -1;
}
*term_sub = termp;
yaz_log(LOG_DEBUG, "%d positions", grep_info->isam_p_indx);
return 1;
}
/* convert APT search term to UTF8 */
static int zapt_term_to_utf8 (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
char *termz)
{
size_t sizez;
Z_Term *term = zapt->term;
switch (term->which)
{
case Z_Term_general:
if (zh->iconv_to_utf8 != 0)
{
char *inbuf = term->u.general->buf;
size_t inleft = term->u.general->len;
char *outbuf = termz;
size_t outleft = IT_MAX_WORD-1;
size_t ret;
ret = yaz_iconv(zh->iconv_to_utf8, &inbuf, &inleft,
&outbuf, &outleft);
if (ret == (size_t)(-1))
{
ret = yaz_iconv(zh->iconv_to_utf8, 0, 0, 0, 0);
zh->errCode = 125;
return -1;
}
*outbuf = 0;
}
else
{
sizez = term->u.general->len;
if (sizez > IT_MAX_WORD-1)
sizez = IT_MAX_WORD-1;
memcpy (termz, term->u.general->buf, sizez);
termz[sizez] = '\0';
}
break;
case Z_Term_characterString:
sizez = strlen(term->u.characterString);
if (sizez > IT_MAX_WORD-1)
sizez = IT_MAX_WORD-1;
memcpy (termz, term->u.characterString, sizez);
termz[sizez] = '\0';
break;
default:
zh->errCode = 124;
return -1;
}
return 0;
}
/* convert APT SCAN term to internal cmap */
static int trans_scan_term (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
char *termz, int reg_type)
{
char termz0[IT_MAX_WORD];
if (zapt_term_to_utf8(zh, zapt, termz0))
return -1; /* error */
else
{
const char **map;
const char *cp = (const char *) termz0;
const char *cp_end = cp + strlen(cp);
const char *src;
int i = 0;
const char *space_map = NULL;
int len;
while ((len = (cp_end - cp)) > 0)
{
map = zebra_maps_input (zh->reg->zebra_maps, reg_type, &cp, len, 0);
if (**map == *CHR_SPACE)
space_map = *map;
else
{
if (i && space_map)
for (src = space_map; *src; src++)
termz[i++] = *src;
space_map = NULL;
for (src = *map; *src; src++)
termz[i++] = *src;
}
}
termz[i] = '\0';
}
return 0;
}
char *normalize_term(ZebraHandle zh, Z_AttributesPlusTerm *zapt,
const char *termz, NMEM stream, unsigned reg_id)
{
WRBUF wrbuf = 0;
AttrType truncation;
int truncation_value;
char *ex_list = 0;
attr_init (&truncation, zapt, 5);
truncation_value = attr_find (&truncation, NULL);
switch (truncation_value)
{
default:
ex_list = "";
break;
case 101:
ex_list = "#";
break;
case 102:
case 103:
ex_list = 0;
break;
case 104:
ex_list = "!#";
break;
case 105:
ex_list = "!*";
break;
}
if (ex_list)
wrbuf = zebra_replace(zh->reg->zebra_maps, reg_id, ex_list,
termz, strlen(termz));
if (!wrbuf)
return nmem_strdup(stream, termz);
else
{
char *buf = (char*) nmem_malloc (stream, wrbuf_len(wrbuf)+1);
memcpy (buf, wrbuf_buf(wrbuf), wrbuf_len(wrbuf));
buf[wrbuf_len(wrbuf)] = '\0';
return buf;
}
}
static void grep_info_delete (struct grep_info *grep_info)
{
#ifdef TERM_COUNT
xfree(grep_info->term_no);
#endif
xfree (grep_info->isam_p_buf);
}
static int grep_info_prepare (ZebraHandle zh,
Z_AttributesPlusTerm *zapt,
struct grep_info *grep_info,
int reg_type,
NMEM stream)
{
AttrType termset;
int termset_value_numeric;
const char *termset_value_string;
#ifdef TERM_COUNT
grep_info->term_no = 0;
#endif
grep_info->isam_p_size = 0;
grep_info->isam_p_buf = NULL;
grep_info->zh = zh;
grep_info->reg_type = reg_type;
grep_info->termset = 0;
if (!zapt)
return 0;
attr_init (&termset, zapt, 8);
termset_value_numeric =
attr_find_ex (&termset, NULL, &termset_value_string);
if (termset_value_numeric != -1)
{
char resname[32];
const char *termset_name = 0;
if (termset_value_numeric != -2)
{
sprintf (resname, "%d", termset_value_numeric);
termset_name = resname;
}
else
termset_name = termset_value_string;
yaz_log(LOG_LOG, "creating termset set %s", termset_name);
grep_info->termset = resultSetAdd (zh, termset_name, 1);
if (!grep_info->termset)
{
zh->errCode = 128;
zh->errString = nmem_strdup (stream, termset_name);
return -1;
}
}
return 0;
}
static RSET rpn_search_APT_phrase (ZebraHandle zh,
Z_AttributesPlusTerm *zapt,
const char *termz_org,
oid_value attributeSet,
NMEM stream,
int reg_type, int complete_flag,
const char *rank_type, int xpath_use,
int num_bases, char **basenames)
{
char term_dst[IT_MAX_WORD+1];
RSET rset[60], result;
int rset_no = 0;
struct grep_info grep_info;
char *termz = normalize_term(zh, zapt, termz_org, stream, reg_type);
const char *termp = termz;
*term_dst = 0;
if (grep_info_prepare (zh, zapt, &grep_info, reg_type, stream))
return 0;
while (1)
{
yaz_log(LOG_DEBUG, "APT_phrase termp=%s", termp);
rset[rset_no] = term_trunc (zh, zapt, &termp, attributeSet,
stream, &grep_info,
reg_type, complete_flag,
num_bases, basenames,
term_dst, rank_type,
xpath_use);
if (!rset[rset_no])
break;
if (++rset_no >= (int) (sizeof(rset)/sizeof(*rset)))
break;
}
grep_info_delete (&grep_info);
if (rset_no == 0)
{
rset_null_parms parms;
parms.rset_term = rset_term_create (termz, -1, rank_type,
zapt->term->which);
return rset_create (rset_kind_null, &parms);
}
else if (rset_no == 1)
return (rset[0]);
else
{
/* new / old prox */
rset_prox_parms parms;
parms.rset = rset;
parms.rset_no = rset_no;
parms.ordered = 1;
parms.exclusion = 0;
parms.relation = 3;
parms.distance = 1;
parms.key_size = sizeof(struct it_key);
parms.cmp = key_compare_it;
parms.getseq = key_get_seq;
parms.log_item = key_logdump_txt;
result = rset_create(rset_kind_prox, &parms);
}
return result;
}
static RSET rpn_search_APT_or_list (ZebraHandle zh,
Z_AttributesPlusTerm *zapt,
const char *termz_org,
oid_value attributeSet,
NMEM stream,
int reg_type, int complete_flag,
const char *rank_type,
int xpath_use,
int num_bases, char **basenames)
{
char term_dst[IT_MAX_WORD+1];
RSET rset[60], result;
int i, rset_no = 0;
struct grep_info grep_info;
char *termz = normalize_term(zh, zapt, termz_org, stream, reg_type);
const char *termp = termz;
if (grep_info_prepare (zh, zapt, &grep_info, reg_type, stream))
return 0;
while (1)
{
yaz_log(LOG_DEBUG, "APT_or_list termp=%s", termp);
rset[rset_no] = term_trunc (zh, zapt, &termp, attributeSet,
stream, &grep_info,
reg_type, complete_flag,
num_bases, basenames,
term_dst, rank_type,
xpath_use);
if (!rset[rset_no])
break;
if (++rset_no >= (int) (sizeof(rset)/sizeof(*rset)))
break;
}
grep_info_delete (&grep_info);
if (rset_no == 0)
{
rset_null_parms parms;
parms.rset_term = rset_term_create (termz, -1, rank_type,
zapt->term->which);
return rset_create (rset_kind_null, &parms);
}
result = rset[0];
for (i = 1; i<rset_no; i++)
{
rset_bool_parms bool_parms;
bool_parms.rset_l = result;
bool_parms.rset_r = rset[i];
bool_parms.key_size = sizeof(struct it_key);
bool_parms.cmp = key_compare_it;
bool_parms.log_item = key_logdump_txt;
result = rset_create (rset_kind_or, &bool_parms);
}
return result;
}
static RSET rpn_search_APT_and_list (ZebraHandle zh,
Z_AttributesPlusTerm *zapt,
const char *termz_org,
oid_value attributeSet,
NMEM stream,
int reg_type, int complete_flag,
const char *rank_type,
int xpath_use,
int num_bases, char **basenames)
{
char term_dst[IT_MAX_WORD+1];
RSET rset[60], result;
int i, rset_no = 0;
struct grep_info grep_info;
char *termz = normalize_term(zh, zapt, termz_org, stream, reg_type);
const char *termp = termz;
if (grep_info_prepare (zh, zapt, &grep_info, reg_type, stream))
return 0;
while (1)
{
yaz_log(LOG_DEBUG, "APT_and_list termp=%s", termp);
rset[rset_no] = term_trunc (zh, zapt, &termp, attributeSet,
stream, &grep_info,
reg_type, complete_flag,
num_bases, basenames,
term_dst, rank_type,
xpath_use);
if (!rset[rset_no])
break;
assert (rset[rset_no]);
if (++rset_no >= (int) (sizeof(rset)/sizeof(*rset)))
break;
}
grep_info_delete (&grep_info);
if (rset_no == 0)
{
rset_null_parms parms;
parms.rset_term = rset_term_create (termz, -1, rank_type,
zapt->term->which);
return rset_create (rset_kind_null, &parms);
}
result = rset[0];
for (i = 1; i<rset_no; i++)
{
rset_bool_parms bool_parms;
bool_parms.rset_l = result;
bool_parms.rset_r = rset[i];
bool_parms.key_size = sizeof(struct it_key);
bool_parms.cmp = key_compare_it;
bool_parms.log_item = key_logdump_txt;
result = rset_create (rset_kind_and_forward, &bool_parms);
}
return result;
}
static int numeric_relation (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
const char **term_sub,
char *term_dict,
oid_value attributeSet,
struct grep_info *grep_info,
int *max_pos,
int reg_type,
char *term_dst)
{
AttrType relation;
int relation_value;
int term_value;
int r;
char *term_tmp = term_dict + strlen(term_dict);
attr_init (&relation, zapt, 2);
relation_value = attr_find (&relation, NULL);
yaz_log(LOG_DEBUG, "numeric relation value=%d", relation_value);
if (!term_100 (zh->reg->zebra_maps, reg_type, term_sub, term_tmp, 1,
term_dst))
return 0;
term_value = atoi (term_tmp);
switch (relation_value)
{
case 1:
yaz_log(LOG_DEBUG, "Relation <");
gen_regular_rel (term_tmp, term_value-1, 1);
break;
case 2:
yaz_log(LOG_DEBUG, "Relation <=");
gen_regular_rel (term_tmp, term_value, 1);
break;
case 4:
yaz_log(LOG_DEBUG, "Relation >=");
gen_regular_rel (term_tmp, term_value, 0);
break;
case 5:
yaz_log(LOG_DEBUG, "Relation >");
gen_regular_rel (term_tmp, term_value+1, 0);
break;
case 3:
default:
yaz_log(LOG_DEBUG, "Relation =");
sprintf (term_tmp, "(0*%d)", term_value);
}
yaz_log(LOG_DEBUG, "dict_lookup_grep: %s", term_tmp);
r = dict_lookup_grep (zh->reg->dict, term_dict, 0, grep_info, max_pos,
0, grep_handle);
if (r)
yaz_log(LOG_WARN, "dict_lookup_grep fail, rel=gt: %d", r);
yaz_log(LOG_DEBUG, "%d positions", grep_info->isam_p_indx);
return 1;
}
static int numeric_term (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
const char **term_sub,
oid_value attributeSet, struct grep_info *grep_info,
int reg_type, int complete_flag,
int num_bases, char **basenames,
char *term_dst, int xpath_use, NMEM stream)
{
char term_dict[2*IT_MAX_WORD+2];
int r, base_no;
AttrType use;
int use_value;
const char *use_string = 0;
oid_value curAttributeSet = attributeSet;
const char *termp;
struct rpn_char_map_info rcmi;
int bases_ok = 0; /* no of databases with OK attribute */
int errCode = 0; /* err code (if any is not OK) */
char *errString = 0; /* addinfo */
rpn_char_map_prepare (zh->reg, reg_type, &rcmi);
attr_init (&use, zapt, 1);
use_value = attr_find_ex (&use, &curAttributeSet, &use_string);
if (use_value == -1)
use_value = 1016;
for (base_no = 0; base_no < num_bases; base_no++)
{
attent attp;
data1_local_attribute id_xpath_attr;
data1_local_attribute *local_attr;
int max_pos, prefix_len = 0;
termp = *term_sub;
if (use_value == -2) /* string attribute (assume IDXPATH/any) */
{
use_value = xpath_use;
attp.local_attributes = &id_xpath_attr;
attp.attset_ordinal = VAL_IDXPATH;
id_xpath_attr.next = 0;
id_xpath_attr.local = use_value;
}
else if (curAttributeSet == VAL_IDXPATH)
{
attp.local_attributes = &id_xpath_attr;
attp.attset_ordinal = VAL_IDXPATH;
id_xpath_attr.next = 0;
id_xpath_attr.local = use_value;
}
else
{
if ((r=att_getentbyatt (zh, &attp, curAttributeSet, use_value,
use_string)))
{
yaz_log(LOG_DEBUG, "att_getentbyatt fail. set=%d use=%d r=%d",
curAttributeSet, use_value, r);
if (r == -1)
{
errString = nmem_strdup_i (stream, use_value);
errCode = 114;
}
else
errCode = 121;
continue;
}
}
if (zebraExplain_curDatabase (zh->reg->zei, basenames[base_no]))
{
zh->errCode = 109; /* Database unavailable */
zh->errString = basenames[base_no];
return -1;
}
for (local_attr = attp.local_attributes; local_attr;
local_attr = local_attr->next)
{
int ord;
char ord_buf[32];
int i, ord_len;
ord = zebraExplain_lookupSU (zh->reg->zei, attp.attset_ordinal,
local_attr->local);
if (ord < 0)
continue;
if (prefix_len)
term_dict[prefix_len++] = '|';
else
term_dict[prefix_len++] = '(';
ord_len = key_SU_encode (ord, ord_buf);
for (i = 0; i<ord_len; i++)
{
term_dict[prefix_len++] = 1;
term_dict[prefix_len++] = ord_buf[i];
}
}
if (!prefix_len)
{
char val_str[32];
sprintf (val_str, "%d", use_value);
errCode = 114;
errString = nmem_strdup (stream, val_str);
continue;
}
bases_ok++;
term_dict[prefix_len++] = ')';
term_dict[prefix_len++] = 1;
term_dict[prefix_len++] = reg_type;
yaz_log(LOG_DEBUG, "reg_type = %d", term_dict[prefix_len-1]);
term_dict[prefix_len] = '\0';
if (!numeric_relation (zh, zapt, &termp, term_dict,
attributeSet, grep_info, &max_pos, reg_type,
term_dst))
return 0;
}
if (!bases_ok)
{
zh->errCode = errCode;
zh->errString = errString;
return -1;
}
*term_sub = termp;
yaz_log(LOG_DEBUG, "%d positions", grep_info->isam_p_indx);
return 1;
}
static RSET rpn_search_APT_numeric (ZebraHandle zh,
Z_AttributesPlusTerm *zapt,
const char *termz,
oid_value attributeSet,
NMEM stream,
int reg_type, int complete_flag,
const char *rank_type, int xpath_use,
int num_bases, char **basenames)
{
char term_dst[IT_MAX_WORD+1];
const char *termp = termz;
RSET rset[60], result;
int i, r, rset_no = 0;
struct grep_info grep_info;
if (grep_info_prepare (zh, zapt, &grep_info, reg_type, stream))
return 0;
while (1)
{
yaz_log(LOG_DEBUG, "APT_numeric termp=%s", termp);
grep_info.isam_p_indx = 0;
r = numeric_term (zh, zapt, &termp, attributeSet, &grep_info,
reg_type, complete_flag, num_bases, basenames,
term_dst, xpath_use,
stream);
if (r < 1)
break;
yaz_log(LOG_DEBUG, "term: %s", term_dst);
rset[rset_no] = rset_trunc (zh, grep_info.isam_p_buf,
grep_info.isam_p_indx, term_dst,
strlen(term_dst), rank_type,
0 /* preserve position */,
zapt->term->which);
assert (rset[rset_no]);
if (++rset_no >= (int) (sizeof(rset)/sizeof(*rset)))
break;
}
grep_info_delete (&grep_info);
if (rset_no == 0)
{
rset_null_parms parms;
parms.rset_term = rset_term_create (term_dst, -1, rank_type,
zapt->term->which);
return rset_create (rset_kind_null, &parms);
}
result = rset[0];
for (i = 1; i<rset_no; i++)
{
rset_bool_parms bool_parms;
bool_parms.rset_l = result;
bool_parms.rset_r = rset[i];
bool_parms.key_size = sizeof(struct it_key);
bool_parms.cmp = key_compare_it;
bool_parms.log_item = key_logdump_txt;
result = rset_create (rset_kind_and_forward, &bool_parms);
}
return result;
}
static RSET rpn_search_APT_local (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
const char *termz,
oid_value attributeSet,
NMEM stream,
const char *rank_type)
{
RSET result;
RSFD rsfd;
struct it_key key;
rset_temp_parms parms;
parms.rset_term = rset_term_create (termz, -1, rank_type,
zapt->term->which);
parms.cmp = key_compare_it;
parms.key_size = sizeof (struct it_key);
parms.temp_path = res_get (zh->res, "setTmpDir");
result = rset_create (rset_kind_temp, &parms);
rsfd = rset_open (result, RSETF_WRITE);
key.sysno = atoi (termz);
key.seqno = 1;
if (key.sysno <= 0)
key.sysno = 1;
rset_write (result, rsfd, &key);
rset_close (result, rsfd);
return result;
}
static RSET rpn_sort_spec (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
oid_value attributeSet, NMEM stream,
Z_SortKeySpecList *sort_sequence,
const char *rank_type)
{
rset_null_parms parms;
int i;
int sort_relation_value;
AttrType sort_relation_type;
int use_value;
AttrType use_type;
Z_SortKeySpec *sks;
Z_SortKey *sk;
Z_AttributeElement *ae;
int oid[OID_SIZE];
oident oe;
char termz[20];
attr_init (&sort_relation_type, zapt, 7);
sort_relation_value = attr_find (&sort_relation_type, &attributeSet);
attr_init (&use_type, zapt, 1);
use_value = attr_find (&use_type, &attributeSet);
if (!sort_sequence->specs)
{
sort_sequence->num_specs = 10;
sort_sequence->specs = (Z_SortKeySpec **)
nmem_malloc (stream, sort_sequence->num_specs *
sizeof(*sort_sequence->specs));
for (i = 0; i<sort_sequence->num_specs; i++)
sort_sequence->specs[i] = 0;
}
if (zapt->term->which != Z_Term_general)
i = 0;
else
i = atoi_n ((char *) zapt->term->u.general->buf,
zapt->term->u.general->len);
if (i >= sort_sequence->num_specs)
i = 0;
sprintf (termz, "%d", i);
oe.proto = PROTO_Z3950;
oe.oclass = CLASS_ATTSET;
oe.value = attributeSet;
if (!oid_ent_to_oid (&oe, oid))
return 0;
sks = (Z_SortKeySpec *) nmem_malloc (stream, sizeof(*sks));
sks->sortElement = (Z_SortElement *)
nmem_malloc (stream, sizeof(*sks->sortElement));
sks->sortElement->which = Z_SortElement_generic;
sk = sks->sortElement->u.generic = (Z_SortKey *)
nmem_malloc (stream, sizeof(*sk));
sk->which = Z_SortKey_sortAttributes;
sk->u.sortAttributes = (Z_SortAttributes *)
nmem_malloc (stream, sizeof(*sk->u.sortAttributes));
sk->u.sortAttributes->id = oid;
sk->u.sortAttributes->list = (Z_AttributeList *)
nmem_malloc (stream, sizeof(*sk->u.sortAttributes->list));
sk->u.sortAttributes->list->num_attributes = 1;
sk->u.sortAttributes->list->attributes = (Z_AttributeElement **)
nmem_malloc (stream, sizeof(*sk->u.sortAttributes->list->attributes));
ae = *sk->u.sortAttributes->list->attributes = (Z_AttributeElement *)
nmem_malloc (stream, sizeof(**sk->u.sortAttributes->list->attributes));
ae->attributeSet = 0;
ae->attributeType = (int *)
nmem_malloc (stream, sizeof(*ae->attributeType));
*ae->attributeType = 1;
ae->which = Z_AttributeValue_numeric;
ae->value.numeric = (int *)
nmem_malloc (stream, sizeof(*ae->value.numeric));
*ae->value.numeric = use_value;
sks->sortRelation = (int *)
nmem_malloc (stream, sizeof(*sks->sortRelation));
if (sort_relation_value == 1)
*sks->sortRelation = Z_SortKeySpec_ascending;
else if (sort_relation_value == 2)
*sks->sortRelation = Z_SortKeySpec_descending;
else
*sks->sortRelation = Z_SortKeySpec_ascending;
sks->caseSensitivity = (int *)
nmem_malloc (stream, sizeof(*sks->caseSensitivity));
*sks->caseSensitivity = 0;
sks->which = Z_SortKeySpec_null;
sks->u.null = odr_nullval ();
sort_sequence->specs[i] = sks;
parms.rset_term = rset_term_create (termz, -1, rank_type,
zapt->term->which);
return rset_create (rset_kind_null, &parms);
}
static int parse_xpath(ZebraHandle zh, Z_AttributesPlusTerm *zapt,
oid_value attributeSet,
struct xpath_location_step *xpath, int max, NMEM mem)
{
oid_value curAttributeSet = attributeSet;
AttrType use;
const char *use_string = 0;
attr_init (&use, zapt, 1);
attr_find_ex (&use, &curAttributeSet, &use_string);
if (!use_string || *use_string != '/')
return -1;
return zebra_parse_xpath_str(use_string, xpath, max, mem);
}
static RSET xpath_trunc(ZebraHandle zh, NMEM stream,
int reg_type, const char *term, int use,
oid_value curAttributeSet)
{
RSET rset;
struct grep_info grep_info;
char term_dict[2048];
char ord_buf[32];
int prefix_len = 0;
int ord = zebraExplain_lookupSU (zh->reg->zei, curAttributeSet, use);
int ord_len, i, r, max_pos;
int term_type = Z_Term_characterString;
const char *flags = "void";
if (grep_info_prepare (zh, 0 /* zapt */, &grep_info, '0', stream))
{
rset_null_parms parms;
parms.rset_term = rset_term_create (term, strlen(term),
flags, term_type);
parms.rset_term->nn = 0;
return rset_create (rset_kind_null, &parms);
}
if (ord < 0)
{
rset_null_parms parms;
parms.rset_term = rset_term_create (term, strlen(term),
flags, term_type);
parms.rset_term->nn = 0;
return rset_create (rset_kind_null, &parms);
}
if (prefix_len)
term_dict[prefix_len++] = '|';
else
term_dict[prefix_len++] = '(';
ord_len = key_SU_encode (ord, ord_buf);
for (i = 0; i<ord_len; i++)
{
term_dict[prefix_len++] = 1;
term_dict[prefix_len++] = ord_buf[i];
}
term_dict[prefix_len++] = ')';
term_dict[prefix_len++] = 1;
term_dict[prefix_len++] = reg_type;
strcpy (term_dict+prefix_len, term);
grep_info.isam_p_indx = 0;
r = dict_lookup_grep (zh->reg->dict, term_dict, 0,
&grep_info, &max_pos, 0, grep_handle);
yaz_log (LOG_LOG, "%s %d positions", term, grep_info.isam_p_indx);
rset = rset_trunc (zh, grep_info.isam_p_buf,
grep_info.isam_p_indx, term, strlen(term),
flags, 1, term_type);
grep_info_delete (&grep_info);
return rset;
}
static RSET rpn_search_xpath (ZebraHandle zh,
oid_value attributeSet,
int num_bases, char **basenames,
NMEM stream, const char *rank_type, RSET rset,
int xpath_len, struct xpath_location_step *xpath)
{
oid_value curAttributeSet = attributeSet;
int base_no;
int i;
if (xpath_len < 0)
return rset;
yaz_log (LOG_DEBUG, "len=%d", xpath_len);
for (i = 0; i<xpath_len; i++)
{
yaz_log (LOG_DEBUG, "XPATH %d %s", i, xpath[i].part);
}
curAttributeSet = VAL_IDXPATH;
/*
//a -> a/.*
//a/b -> b/a/.*
/a -> a/
/a/b -> b/a/
/ -> none
a[@attr=value]/b[@other=othervalue]
/e/@a val range(e/,range(@a,freetext(w,1015,val),@a),e/)
/a/b val range(b/a/,freetext(w,1016,val),b/a/)
/a/b/@c val range(b/a/,range(@c,freetext(w,1016,val),@c),b/a/)
/a/b[@c=y] val range(b/a/,freetext(w,1016,val),b/a/,@c=y)
/a[@c=y]/b val range(a/,range(b/a/,freetext(w,1016,val),b/a/),a/,@c=y)
/a[@c=x]/b[@c=y] range(a/,range(b/a/,freetext(w,1016,val),b/a/,@c=y),a/,@c=x)
*/
dict_grep_cmap (zh->reg->dict, 0, 0);
for (base_no = 0; base_no < num_bases; base_no++)
{
int level = xpath_len;
int first_path = 1;
if (zebraExplain_curDatabase (zh->reg->zei, basenames[base_no]))
{
zh->errCode = 109; /* Database unavailable */
zh->errString = basenames[base_no];
return rset;
}
while (--level >= 0)
{
char xpath_rev[128];
int i, len;
rset_between_parms parms;
RSET rset_start_tag = 0, rset_end_tag = 0, rset_attr = 0;
*xpath_rev = 0;
len = 0;
for (i = level; i >= 1; --i)
{
const char *cp = xpath[i].part;
if (*cp)
{
for (;*cp; cp++)
if (*cp == '*')
{
memcpy (xpath_rev + len, "[^/]*", 5);
len += 5;
}
else if (*cp == ' ')
{
xpath_rev[len++] = 1;
xpath_rev[len++] = ' ';
}
else
xpath_rev[len++] = *cp;
xpath_rev[len++] = '/';
}
else if (i == 1) /* // case */
{
xpath_rev[len++] = '.';
xpath_rev[len++] = '*';
}
}
xpath_rev[len] = 0;
if (xpath[level].predicate &&
xpath[level].predicate->which == XPATH_PREDICATE_RELATION &&
xpath[level].predicate->u.relation.name[0])
{
WRBUF wbuf = wrbuf_alloc();
wrbuf_puts(wbuf, xpath[level].predicate->u.relation.name+1);
if (xpath[level].predicate->u.relation.value)
{
const char *cp = xpath[level].predicate->u.relation.value;
wrbuf_putc(wbuf, '=');
while (*cp)
{
if (strchr(REGEX_CHARS, *cp))
wrbuf_putc(wbuf, '\\');
wrbuf_putc(wbuf, *cp);
cp++;
}
}
wrbuf_puts(wbuf, "");
rset_attr = xpath_trunc (
zh, stream, '0', wrbuf_buf(wbuf), 3, curAttributeSet);
wrbuf_free(wbuf, 1);
}
else
{
if (!first_path)
continue;
}
yaz_log (LOG_DEBUG, "xpath_rev (%d) = %s", level, xpath_rev);
if (strlen(xpath_rev))
{
rset_start_tag = xpath_trunc(zh, stream,
'0', xpath_rev, 1, curAttributeSet);
rset_end_tag = xpath_trunc(zh, stream,
'0', xpath_rev, 2, curAttributeSet);
parms.key_size = sizeof(struct it_key);
parms.cmp = key_compare_it;
parms.rset_l = rset_start_tag;
parms.rset_m = rset;
parms.rset_r = rset_end_tag;
parms.rset_attr = rset_attr;
parms.printer = key_print_it;
rset = rset_create (rset_kind_between, &parms);
}
first_path = 0;
}
}
return rset;
}
static RSET rpn_search_APT (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
oid_value attributeSet, NMEM stream,
Z_SortKeySpecList *sort_sequence,
int num_bases, char **basenames)
{
unsigned reg_id;
char *search_type = NULL;
char rank_type[128];
int complete_flag;
int sort_flag;
char termz[IT_MAX_WORD+1];
RSET rset = 0;
int xpath_len;
int xpath_use = 0;
struct xpath_location_step xpath[10];
zebra_maps_attr (zh->reg->zebra_maps, zapt, ®_id, &search_type,
rank_type, &complete_flag, &sort_flag);
yaz_log(LOG_DEBUG, "reg_id=%c", reg_id);
yaz_log(LOG_DEBUG, "complete_flag=%d", complete_flag);
yaz_log(LOG_DEBUG, "search_type=%s", search_type);
yaz_log(LOG_DEBUG, "rank_type=%s", rank_type);
if (zapt_term_to_utf8(zh, zapt, termz))
return 0;
if (sort_flag)
return rpn_sort_spec (zh, zapt, attributeSet, stream, sort_sequence,
rank_type);
xpath_len = parse_xpath(zh, zapt, attributeSet, xpath, 10, stream);
if (xpath_len >= 0)
{
xpath_use = 1016;
if (xpath[xpath_len-1].part[0] == '@')
xpath_use = 1015;
}
if (!strcmp (search_type, "phrase"))
{
rset = rpn_search_APT_phrase (zh, zapt, termz, attributeSet, stream,
reg_id, complete_flag, rank_type,
xpath_use,
num_bases, basenames);
}
else if (!strcmp (search_type, "and-list"))
{
rset = rpn_search_APT_and_list (zh, zapt, termz, attributeSet, stream,
reg_id, complete_flag, rank_type,
xpath_use,
num_bases, basenames);
}
else if (!strcmp (search_type, "or-list"))
{
rset = rpn_search_APT_or_list (zh, zapt, termz, attributeSet, stream,
reg_id, complete_flag, rank_type,
xpath_use,
num_bases, basenames);
}
else if (!strcmp (search_type, "local"))
{
rset = rpn_search_APT_local (zh, zapt, termz, attributeSet, stream,
rank_type);
}
else if (!strcmp (search_type, "numeric"))
{
rset = rpn_search_APT_numeric (zh, zapt, termz, attributeSet, stream,
reg_id, complete_flag, rank_type,
xpath_use,
num_bases, basenames);
}
else if (!strcmp (search_type, "always"))
{
rset = 0;
}
else
zh->errCode = 118;
return rpn_search_xpath (zh, attributeSet, num_bases, basenames,
stream, rank_type, rset, xpath_len, xpath);
}
static RSET rpn_search_structure (ZebraHandle zh, Z_RPNStructure *zs,
oid_value attributeSet, NMEM stream,
Z_SortKeySpecList *sort_sequence,
int num_bases, char **basenames)
{
RSET r = NULL;
if (zs->which == Z_RPNStructure_complex)
{
Z_Operator *zop = zs->u.complex->roperator;
rset_bool_parms bool_parms;
bool_parms.rset_l = rpn_search_structure (zh, zs->u.complex->s1,
attributeSet, stream,
sort_sequence,
num_bases, basenames);
if (bool_parms.rset_l == NULL)
return NULL;
bool_parms.rset_r = rpn_search_structure (zh, zs->u.complex->s2,
attributeSet, stream,
sort_sequence,
num_bases, basenames);
if (bool_parms.rset_r == NULL)
{
rset_delete (bool_parms.rset_l);
return NULL;
}
bool_parms.key_size = sizeof(struct it_key);
bool_parms.cmp = key_compare_it;
bool_parms.log_item = key_logdump_txt;
switch (zop->which)
{
case Z_Operator_and:
if (res_get(zh->res, "rsetforward"))
r = rset_create (rset_kind_and_forward, &bool_parms);
else
r = rset_create (rset_kind_and, &bool_parms);
break;
case Z_Operator_or:
r = rset_create (rset_kind_or, &bool_parms);
break;
case Z_Operator_and_not:
r = rset_create (rset_kind_not, &bool_parms);
break;
case Z_Operator_prox:
if (zop->u.prox->which != Z_ProximityOperator_known)
{
zh->errCode = 132;
return NULL;
}
if (*zop->u.prox->u.known != Z_ProxUnit_word)
{
char *val = (char *) nmem_malloc (stream, 16);
zh->errCode = 132;
zh->errString = val;
sprintf (val, "%d", *zop->u.prox->u.known);
return NULL;
}
else
{
/* new / old prox */
rset_prox_parms parms;
RSET twosets[2];
twosets[0] = bool_parms.rset_l;
twosets[1] = bool_parms.rset_r;
parms.rset = twosets;
parms.rset_no = 2;
parms.ordered = *zop->u.prox->ordered;
parms.exclusion = (!zop->u.prox->exclusion ? 0 :
*zop->u.prox->exclusion);
parms.relation = *zop->u.prox->relationType;
parms.distance = *zop->u.prox->distance;
parms.key_size = sizeof(struct it_key);
parms.cmp = key_compare_it;
parms.getseq = key_get_seq;
parms.log_item = key_logdump_txt;
r = rset_create(rset_kind_prox, &parms);
}
break;
default:
zh->errCode = 110;
return NULL;
}
}
else if (zs->which == Z_RPNStructure_simple)
{
if (zs->u.simple->which == Z_Operand_APT)
{
yaz_log(LOG_DEBUG, "rpn_search_APT");
r = rpn_search_APT (zh, zs->u.simple->u.attributesPlusTerm,
attributeSet, stream, sort_sequence,
num_bases, basenames);
}
else if (zs->u.simple->which == Z_Operand_resultSetId)
{
yaz_log(LOG_DEBUG, "rpn_search_ref");
r = resultSetRef (zh, zs->u.simple->u.resultSetId);
if (!r)
{
r = rset_create (rset_kind_null, NULL);
zh->errCode = 30;
zh->errString =
nmem_strdup (stream, zs->u.simple->u.resultSetId);
return 0;
}
else
rset_dup(r);
}
else
{
zh->errCode = 3;
return 0;
}
}
else
{
zh->errCode = 3;
return 0;
}
return r;
}
RSET rpn_search (ZebraHandle zh, NMEM nmem,
Z_RPNQuery *rpn, int num_bases, char **basenames,
const char *setname,
ZebraSet sset)
{
RSET rset;
oident *attrset;
oid_value attributeSet;
Z_SortKeySpecList *sort_sequence;
int sort_status, i;
zh->errCode = 0;
zh->errString = NULL;
zh->hits = 0;
sort_sequence = (Z_SortKeySpecList *)
nmem_malloc (nmem, sizeof(*sort_sequence));
sort_sequence->num_specs = 10;
sort_sequence->specs = (Z_SortKeySpec **)
nmem_malloc (nmem, sort_sequence->num_specs *
sizeof(*sort_sequence->specs));
for (i = 0; i<sort_sequence->num_specs; i++)
sort_sequence->specs[i] = 0;
attrset = oid_getentbyoid (rpn->attributeSetId);
attributeSet = attrset->value;
rset = rpn_search_structure (zh, rpn->RPNStructure, attributeSet,
nmem, sort_sequence, num_bases, basenames);
if (!rset)
return 0;
if (zh->errCode)
yaz_log(LOG_DEBUG, "search error: %d", zh->errCode);
for (i = 0; sort_sequence->specs[i]; i++)
;
sort_sequence->num_specs = i;
if (!i)
resultSetRank (zh, sset, rset);
else
{
yaz_log(LOG_DEBUG, "resultSetSortSingle in rpn_search");
resultSetSortSingle (zh, nmem, sset, rset,
sort_sequence, &sort_status);
if (zh->errCode)
{
yaz_log(LOG_DEBUG, "resultSetSortSingle status = %d", zh->errCode);
}
}
return rset;
}
struct scan_info_entry {
char *term;
ISAMS_P isam_p;
};
struct scan_info {
struct scan_info_entry *list;
ODR odr;
int before, after;
char prefix[20];
};
static int scan_handle (char *name, const char *info, int pos, void *client)
{
int len_prefix, idx;
struct scan_info *scan_info = (struct scan_info *) client;
len_prefix = strlen(scan_info->prefix);
if (memcmp (name, scan_info->prefix, len_prefix))
return 1;
if (pos > 0) idx = scan_info->after - pos + scan_info->before;
else
idx = - pos - 1;
scan_info->list[idx].term = (char *)
odr_malloc (scan_info->odr, strlen(name + len_prefix)+1);
strcpy (scan_info->list[idx].term, name + len_prefix);
assert (*info == sizeof(ISAMS_P));
memcpy (&scan_info->list[idx].isam_p, info+1, sizeof(ISAMS_P));
return 0;
}
static void scan_term_untrans (ZebraHandle zh, NMEM stream, int reg_type,
char **dst, const char *src)
{
char term_src[IT_MAX_WORD];
char term_dst[IT_MAX_WORD];
term_untrans (zh, reg_type, term_src, src);
if (zh->iconv_from_utf8 != 0)
{
int len;
char *inbuf = term_src;
size_t inleft = strlen(term_src);
char *outbuf = term_dst;
size_t outleft = sizeof(term_dst)-1;
size_t ret;
ret = yaz_iconv (zh->iconv_from_utf8, &inbuf, &inleft,
&outbuf, &outleft);
if (ret == (size_t)(-1))
len = 0;
else
len = outbuf - term_dst;
*dst = nmem_malloc (stream, len + 1);
if (len > 0)
memcpy (*dst, term_dst, len);
(*dst)[len] = '\0';
}
else
*dst = nmem_strdup (stream, term_src);
}
static void count_set (RSET r, int *count)
{
int psysno = 0;
int kno = 0;
struct it_key key;
RSFD rfd;
int term_index;
yaz_log(LOG_DEBUG, "count_set");
*count = 0;
rfd = rset_open (r, RSETF_READ);
while (rset_read (r, rfd, &key, &term_index))
{
if (key.sysno != psysno)
{
psysno = key.sysno;
(*count)++;
}
kno++;
}
rset_close (r, rfd);
yaz_log(LOG_DEBUG, "%d keys, %d records", kno, *count);
}
void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
oid_value attributeset,
int num_bases, char **basenames,
int *position, int *num_entries, ZebraScanEntry **list,
int *is_partial, RSET limit_set, int return_zero)
{
int i;
int pos = *position;
int num = *num_entries;
int before;
int after;
int base_no;
char termz[IT_MAX_WORD+20];
AttrType use;
int use_value;
const char *use_string = 0;
struct scan_info *scan_info_array;
ZebraScanEntry *glist;
int ords[32], ord_no = 0;
int ptr[32];
int bases_ok = 0; /* no of databases with OK attribute */
int errCode = 0; /* err code (if any is not OK) */
char *errString = 0; /* addinfo */
unsigned reg_id;
char *search_type = NULL;
char rank_type[128];
int complete_flag;
int sort_flag;
*list = 0;
if (attributeset == VAL_NONE)
attributeset = VAL_BIB1;
if (!limit_set)
{
AttrType termset;
int termset_value_numeric;
const char *termset_value_string;
attr_init (&termset, zapt, 8);
termset_value_numeric =
attr_find_ex (&termset, NULL, &termset_value_string);
if (termset_value_numeric != -1)
{
char resname[32];
const char *termset_name = 0;
if (termset_value_numeric != -2)
{
sprintf (resname, "%d", termset_value_numeric);
termset_name = resname;
}
else
termset_name = termset_value_string;
limit_set = resultSetRef (zh, termset_name);
}
}
yaz_log (LOG_DEBUG, "position = %d, num = %d set=%d",
pos, num, attributeset);
attr_init (&use, zapt, 1);
use_value = attr_find_ex (&use, &attributeset, &use_string);
if (zebra_maps_attr (zh->reg->zebra_maps, zapt, ®_id, &search_type,
rank_type, &complete_flag, &sort_flag))
{
*num_entries = 0;
zh->errCode = 113;
return ;
}
yaz_log (LOG_DEBUG, "use_value = %d", use_value);
if (use_value == -1)
use_value = 1016;
for (base_no = 0; base_no < num_bases && ord_no < 32; base_no++)
{
int r;
attent attp;
data1_local_attribute *local_attr;
if ((r=att_getentbyatt (zh, &attp, attributeset, use_value,
use_string)))
{
yaz_log(LOG_DEBUG, "att_getentbyatt fail. set=%d use=%d",
attributeset, use_value);
if (r == -1)
{
char val_str[32];
sprintf (val_str, "%d", use_value);
errCode = 114;
errString = odr_strdup (stream, val_str);
}
else
errCode = 121;
continue;
}
if (zebraExplain_curDatabase (zh->reg->zei, basenames[base_no]))
{
zh->errString = basenames[base_no];
zh->errCode = 109; /* Database unavailable */
*num_entries = 0;
return;
}
bases_ok++;
for (local_attr = attp.local_attributes; local_attr && ord_no < 32;
local_attr = local_attr->next)
{
int ord;
ord = zebraExplain_lookupSU (zh->reg->zei, attp.attset_ordinal,
local_attr->local);
if (ord > 0)
ords[ord_no++] = ord;
}
}
if (!bases_ok && errCode)
{
zh->errCode = errCode;
zh->errString = errString;
*num_entries = 0;
}
if (ord_no == 0)
{
*num_entries = 0;
return;
}
/* prepare dictionary scanning */
before = pos-1;
after = 1+num-pos;
scan_info_array = (struct scan_info *)
odr_malloc (stream, ord_no * sizeof(*scan_info_array));
for (i = 0; i < ord_no; i++)
{
int j, prefix_len = 0;
int before_tmp = before, after_tmp = after;
struct scan_info *scan_info = scan_info_array + i;
struct rpn_char_map_info rcmi;
rpn_char_map_prepare (zh->reg, reg_id, &rcmi);
scan_info->before = before;
scan_info->after = after;
scan_info->odr = stream;
scan_info->list = (struct scan_info_entry *)
odr_malloc (stream, (before+after) * sizeof(*scan_info->list));
for (j = 0; j<before+after; j++)
scan_info->list[j].term = NULL;
prefix_len += key_SU_encode (ords[i], termz + prefix_len);
termz[prefix_len++] = reg_id;
termz[prefix_len] = 0;
strcpy (scan_info->prefix, termz);
if (trans_scan_term (zh, zapt, termz+prefix_len, reg_id))
return ;
dict_scan (zh->reg->dict, termz, &before_tmp, &after_tmp,
scan_info, scan_handle);
}
glist = (ZebraScanEntry *)
odr_malloc (stream, (before+after)*sizeof(*glist));
/* consider terms after main term */
for (i = 0; i < ord_no; i++)
ptr[i] = before;
*is_partial = 0;
for (i = 0; i<after; i++)
{
int j, j0 = -1;
const char *mterm = NULL;
const char *tst;
RSET rset;
for (j = 0; j < ord_no; j++)
{
if (ptr[j] < before+after &&
(tst=scan_info_array[j].list[ptr[j]].term) &&
(!mterm || strcmp (tst, mterm) < 0))
{
j0 = j;
mterm = tst;
}
}
if (j0 == -1)
break;
scan_term_untrans (zh, stream->mem, reg_id,
&glist[i+before].term, mterm);
rset = rset_trunc (zh, &scan_info_array[j0].list[ptr[j0]].isam_p, 1,
glist[i+before].term, strlen(glist[i+before].term),
NULL, 0, zapt->term->which);
ptr[j0]++;
for (j = j0+1; j<ord_no; j++)
{
if (ptr[j] < before+after &&
(tst=scan_info_array[j].list[ptr[j]].term) &&
!strcmp (tst, mterm))
{
rset_bool_parms bool_parms;
RSET rset2;
rset2 =
rset_trunc (zh, &scan_info_array[j].list[ptr[j]].isam_p, 1,
glist[i+before].term,
strlen(glist[i+before].term), NULL, 0,
zapt->term->which);
bool_parms.key_size = sizeof(struct it_key);
bool_parms.cmp = key_compare_it;
bool_parms.log_item = key_logdump_txt;
bool_parms.rset_l = rset;
bool_parms.rset_r = rset2;
rset = rset_create (rset_kind_or, &bool_parms);
ptr[j]++;
}
}
if (limit_set)
{
rset_bool_parms bool_parms;
bool_parms.key_size = sizeof(struct it_key);
bool_parms.cmp = key_compare_it;
bool_parms.log_item = key_logdump_txt;
bool_parms.rset_l = rset;
bool_parms.rset_r = rset_dup(limit_set);
rset = rset_create (rset_kind_and, &bool_parms);
}
count_set (rset, &glist[i+before].occurrences);
rset_delete (rset);
}
if (i < after)
{
*num_entries -= (after-i);
*is_partial = 1;
}
/* consider terms before main term */
for (i = 0; i<ord_no; i++)
ptr[i] = 0;
for (i = 0; i<before; i++)
{
int j, j0 = -1;
const char *mterm = NULL;
const char *tst;
RSET rset;
for (j = 0; j <ord_no; j++)
{
if (ptr[j] < before &&
(tst=scan_info_array[j].list[before-1-ptr[j]].term) &&
(!mterm || strcmp (tst, mterm) > 0))
{
j0 = j;
mterm = tst;
}
}
if (j0 == -1)
break;
scan_term_untrans (zh, stream->mem, reg_id,
&glist[before-1-i].term, mterm);
rset = rset_trunc
(zh, &scan_info_array[j0].list[before-1-ptr[j0]].isam_p, 1,
glist[before-1-i].term, strlen(glist[before-1-i].term),
NULL, 0, zapt->term->which);
ptr[j0]++;
for (j = j0+1; j<ord_no; j++)
{
if (ptr[j] < before &&
(tst=scan_info_array[j].list[before-1-ptr[j]].term) &&
!strcmp (tst, mterm))
{
rset_bool_parms bool_parms;
RSET rset2;
rset2 = rset_trunc (zh,
&scan_info_array[j].list[before-1-ptr[j]].isam_p, 1,
glist[before-1-i].term,
strlen(glist[before-1-i].term), NULL, 0,
zapt->term->which);
bool_parms.key_size = sizeof(struct it_key);
bool_parms.cmp = key_compare_it;
bool_parms.log_item = key_logdump_txt;
bool_parms.rset_l = rset;
bool_parms.rset_r = rset2;
rset = rset_create (rset_kind_or, &bool_parms);
ptr[j]++;
}
}
if (limit_set)
{
rset_bool_parms bool_parms;
bool_parms.key_size = sizeof(struct it_key);
bool_parms.cmp = key_compare_it;
bool_parms.log_item = key_logdump_txt;
bool_parms.rset_l = rset;
bool_parms.rset_r = rset_dup(limit_set);
rset = rset_create (rset_kind_and, &bool_parms);
}
count_set (rset, &glist[before-1-i].occurrences);
rset_delete (rset);
}
i = before-i;
if (i)
{
*is_partial = 1;
*position -= i;
*num_entries -= i;
}
*list = glist + i; /* list is set to first 'real' entry */
yaz_log(LOG_DEBUG, "position = %d, num_entries = %d",
*position, *num_entries);
if (zh->errCode)
yaz_log(LOG_DEBUG, "scan error: %d", zh->errCode);
}
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