X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=index%2Fzrpn.c;h=265dc6a6eefd6e44901515d74a54d7b969d704f8;hb=5dd30bc682bf1338ed6beb1a485ccde86b06cc5a;hp=46d7afd461ee8a3ace7ee9915f924c634fef151d;hpb=e5652ee69c5a71f19ea16455b48d22a78fb5fcdd;p=idzebra-moved-to-github.git diff --git a/index/zrpn.c b/index/zrpn.c index 46d7afd..4788742 100644 --- a/index/zrpn.c +++ b/index/zrpn.c @@ -1,220 +1,3100 @@ -/* - * Copyright (C) 1995, Index Data I/S - * All rights reserved. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: zrpn.c,v $ - * Revision 1.5 1995-09-06 10:33:04 adam - * More work on present. Some log messages removed. - * - * Revision 1.4 1995/09/05 15:28:40 adam - * More work on search engine. - * - * Revision 1.3 1995/09/04 15:20:22 adam - * Minor changes. - * - * Revision 1.2 1995/09/04 12:33:43 adam - * Various cleanup. YAZ util used instead. - * - * Revision 1.1 1995/09/04 09:10:40 adam - * More work on index add/del/update. - * Merge sort implemented. - * Initial work on z39 server. - * - */ +/* $Id: zrpn.c,v 1.188 2005-05-03 14:04:31 adam Exp $ + Copyright (C) 1995-2005 + 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 #include +#ifdef WIN32 +#include +#else #include +#endif +#include + +#include +#include "index.h" +#include + +#include +#include + +struct rpn_char_map_info +{ + ZebraMaps zm; + int reg_type; +}; + +typedef struct +{ + int type; + int major; + int minor; + Z_AttributesPlusTerm *zapt; +} AttrType; + + +static int log_level_set = 0; +static int log_level_rpn = 0; + +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(YLOG_LOG, "---"); + while (*outp) + { + yaz_log(YLOG_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 + ISAM_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 (!log_level_set) + { + log_level_rpn = yaz_log_module_level("rpn"); + log_level_set = 1; + } + if (p->isam_p_indx == p->isam_p_size) + { + ISAM_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 = (ISAM_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_level_rpn, "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_level_rpn, "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; +} + + +static void esc_str(char *out_buf, int out_size, + const char *in_buf, int in_size) +{ + int k; + + assert(out_buf); + assert(in_buf); + assert(out_size > 20); + *out_buf = '\0'; + for (k = 0; k 126) + pc = '?'; + else + pc = c; + sprintf(out_buf +strlen(out_buf), "%02X:%c ", c, pc); + if (strlen(out_buf) > out_size-20) + { + strcat(out_buf, ".."); + break; + } + } +} + +#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; + 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) + { + const char *s1 = s0; + int q_map_match = 0; + map = zebra_maps_search(zebra_maps, reg_type, &s0, strlen(s0), + &q_map_match); + 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 */ + memcpy(dst_term+j, s1, s0 - s1); + j += (s0 - s1); + if (!q_map_match) + { + while (s1 < s0) + { + if (strchr(REGEX_CHARS, *s1)) + dst[i++] = '\\'; + dst[i++] = *s1++; + } + } + else + { + char tmpbuf[80]; + esc_str(tmpbuf, sizeof(tmpbuf), map[0], strlen(map[0])); + + strcpy(dst + i, map[0]); + i += strlen(map[0]); + } + } + 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; + 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 + { + const char *s1 = s0; + int q_map_match = 0; + map = zebra_maps_search(zebra_maps, reg_type, &s0, strlen(s0), + &q_map_match); + if (space_split && **map == *CHR_SPACE) + break; + + /* add non-space char */ + memcpy(dst_term+j, s1, s0 - s1); + j += (s0 - s1); + if (!q_map_match) + { + while (s1 < s0) + { + if (strchr(REGEX_CHARS, *s1)) + dst[i++] = '\\'; + dst[i++] = *s1++; + } + } + else + { + char tmpbuf[80]; + esc_str(tmpbuf, sizeof(tmpbuf), map[0], strlen(map[0])); + + strcpy(dst + i, map[0]); + i += strlen(map[0]); + } + } + } + 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; + 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(((const unsigned char *)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 + { + const char *s1 = s0; + int q_map_match = 0; + map = zebra_maps_search(zebra_maps, reg_type, &s0, strlen(s0), + &q_map_match); + if (space_split && **map == *CHR_SPACE) + break; + + /* add non-space char */ + memcpy(dst_term+j, s1, s0 - s1); + j += (s0 - s1); + if (!q_map_match) + { + while (s1 < s0) + { + if (strchr(REGEX_CHARS, *s1)) + dst[i++] = '\\'; + dst[i++] = *s1++; + } + } + else + { + char tmpbuf[80]; + esc_str(tmpbuf, sizeof(tmpbuf), map[0], strlen(map[0])); + + strcpy(dst + i, map[0]); + i += strlen(map[0]); + } + } + } + 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; + 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++; + } + else + { + const char *s1 = s0; + int q_map_match = 0; + map = zebra_maps_search(zebra_maps, reg_type, &s0, strlen(s0), + &q_map_match); + if (space_split && **map == *CHR_SPACE) + break; + + /* add non-space char */ + memcpy(dst_term+j, s1, s0 - s1); + j += (s0 - s1); + if (!q_map_match) + { + while (s1 < s0) + { + if (strchr(REGEX_CHARS, *s1)) + dst[i++] = '\\'; + dst[i++] = *s1++; + } + } + else + { + char tmpbuf[80]; + esc_str(tmpbuf, sizeof(tmpbuf), map[0], strlen(map[0])); + + strcpy(dst + i, map[0]); + i += strlen(map[0]); + } + } + } + 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; + 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++; + } + else + { + const char *s1 = s0; + int q_map_match = 0; + map = zebra_maps_search(zebra_maps, reg_type, &s0, strlen(s0), + &q_map_match); + if (space_split && **map == *CHR_SPACE) + break; + + /* add non-space char */ + memcpy(dst_term+j, s1, s0 - s1); + j += (s0 - s1); + if (!q_map_match) + { + while (s1 < s0) + { + if (strchr(REGEX_CHARS, *s1)) + dst[i++] = '\\'; + dst[i++] = *s1++; + } + } + else + { + char tmpbuf[80]; + esc_str(tmpbuf, sizeof(tmpbuf), map[0], strlen(map[0])); + + strcpy(dst + i, map[0]); + i += strlen(map[0]); + } + } + } + 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(YLOG_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 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, + int *error_code) +{ + 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); + + *error_code = 0; + yaz_log(YLOG_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_level_rpn, "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_level_rpn, "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_level_rpn, "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_level_rpn, "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: + case 102: + case -1: + yaz_log(log_level_rpn, "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, ")"); + break; + default: + *error_code = 117; + return 0; + } + return 1; +} + +static ZEBRA_RES 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 ZEBRA_RES 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, + NMEM rset_nmem, + RSET *rset, + struct rset_key_control *kc) +{ + ZEBRA_RES res; + *rset = 0; + grep_info->isam_p_indx = 0; + res = string_term(zh, zapt, term_sub, attributeSet, stream, grep_info, + reg_type, complete_flag, num_bases, basenames, + term_dst, xpath_use); + if (res != ZEBRA_OK) + return res; + if (!*term_sub) /* no more terms ? */ + return res; + yaz_log(log_level_rpn, "term: %s", term_dst); + *rset = 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, rset_nmem, + kc, kc->scope); + if (!*rset) + return ZEBRA_FAIL; + return ZEBRA_OK; +} + +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 ZEBRA_RES 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_level_rpn, "string_term, use value %d", use_value); + attr_init(&truncation, zapt, 5); + truncation_value = attr_find(&truncation, NULL); + yaz_log(log_level_rpn, "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 ord = -1; + 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; + int relation_error; + + termp = *term_sub; + + if (zebraExplain_curDatabase (zh->reg->zei, basenames[base_no])) + { + zh->errCode = YAZ_BIB1_DATABASE_UNAVAILABLE; + zh->errString = basenames[base_no]; + return ZEBRA_FAIL; + } + if (xpath_use > 0 && use_value == -2) + { + /* xpath mode and we have a string attribute */ + attp.local_attributes = &id_xpath_attr; + attp.attset_ordinal = VAL_IDXPATH; + id_xpath_attr.next = 0; + + use_value = xpath_use; /* xpath_use as use-attribute now */ + id_xpath_attr.local = use_value; + } + else if (curAttributeSet == VAL_IDXPATH && use_value >= 0) + { + /* X-Path attribute, use numeric value directly */ + attp.local_attributes = &id_xpath_attr; + attp.attset_ordinal = VAL_IDXPATH; + id_xpath_attr.next = 0; + id_xpath_attr.local = use_value; + } + else if (use_string && + (ord = zebraExplain_lookup_attr_str(zh->reg->zei, + use_string)) >= 0) + { + /* we have a match for a raw string attribute */ + char ord_buf[32]; + int i, ord_len; + + if (prefix_len) + term_dict[prefix_len++] = '|'; + else + term_dict[prefix_len++] = '('; + + ord_len = key_SU_encode (ord, ord_buf); + for (i = 0; inext) + { + char ord_buf[32]; + int i, ord_len; + + ord = zebraExplain_lookup_attr_su(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; ierrCode = relation_error; + return ZEBRA_FAIL; + } + *term_sub = 0; + return ZEBRA_OK; + } + 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)) + { + *term_sub = 0; + return ZEBRA_OK; + } + 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)) + { + *term_sub = 0; + return ZEBRA_OK; + } + 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)) + { + *term_sub = 0; + return ZEBRA_OK; + } + 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)) + { + *term_sub = 0; + return ZEBRA_OK; + } + 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)) + { + *term_sub = 0; + return ZEBRA_OK; + } + strcat(term_dict, ")"); + break; + case 103: /* Regexp-2 */ + regex_range = 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)) + { + *term_sub = 0; + return ZEBRA_OK; + } + 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)) + { + *term_sub = 0; + return ZEBRA_OK; + } + 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)) + { + *term_sub = 0; + return ZEBRA_OK; + } + 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)) + { + *term_sub = 0; + return ZEBRA_OK; + } + strcat(term_dict, ")"); + break; + default: + zh->errCode = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE; + zh->errString = nmem_strdup_i(stream, truncation_value); + return ZEBRA_FAIL; + } + if (attr_ok) + { + char buf[80]; + const char *input = term_dict + prefix_len; + esc_str(buf, sizeof(buf), input, strlen(input)); + } + if (attr_ok) + { + yaz_log(log_level_rpn, "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(YLOG_WARN, "dict_lookup_grep fail %d", r); + } + } + if (!bases_ok) + { + zh->errCode = errCode; + zh->errString = errString; + return ZEBRA_FAIL; + } + *term_sub = termp; + yaz_log(YLOG_DEBUG, "%d positions", grep_info->isam_p_indx); + return ZEBRA_OK; +} + + +/* convert APT search term to UTF8 */ +static ZEBRA_RES 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 = + YAZ_BIB1_QUERY_TERM_INCLUDES_CHARS_THAT_DO_NOT_TRANSLATE_INTO_; + 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 = YAZ_BIB1_UNSUPP_CODED_VALUE_FOR_TERM; + return ZEBRA_FAIL; + } + return ZEBRA_OK; +} + +/* convert APT SCAN term to internal cmap */ +static ZEBRA_RES 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) == ZEBRA_FAIL) + return ZEBRA_FAIL; /* 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 ZEBRA_OK; +} + +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_level_rpn, "creating termset set %s", termset_name); + grep_info->termset = resultSetAdd(zh, termset_name, 1); + if (!grep_info->termset) + { + zh->errCode = YAZ_BIB1_ILLEGAL_RESULT_SET_NAME; + zh->errString = nmem_strdup(stream, termset_name); + return -1; + } + } + return 0; +} + + +static ZEBRA_RES term_list_trunc(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, + NMEM rset_nmem, + RSET **result_sets, int *num_result_sets, + struct rset_key_control *kc) +{ + char term_dst[IT_MAX_WORD+1]; + struct grep_info grep_info; + char *termz = normalize_term(zh, zapt, termz_org, stream, reg_type); + const char *termp = termz; + int alloc_sets = 0; -#include "zserver.h" + *num_result_sets = 0; + *term_dst = 0; + if (grep_info_prepare(zh, zapt, &grep_info, reg_type, stream)) + return ZEBRA_FAIL; + while(1) + { + ZEBRA_RES res; -#include -#include -#include + if (alloc_sets == *num_result_sets) + { + int add = 10; + RSET *rnew = (RSET *) nmem_malloc(stream, (alloc_sets+add) * + sizeof(*rnew)); + if (alloc_sets) + memcpy(rnew, *result_sets, alloc_sets * sizeof(*rnew)); + alloc_sets = alloc_sets + add; + *result_sets = rnew; + } + res = term_trunc(zh, zapt, &termp, attributeSet, + stream, &grep_info, + reg_type, complete_flag, + num_bases, basenames, + term_dst, rank_type, + xpath_use, rset_nmem, + &(*result_sets)[*num_result_sets], + kc); + if (res != ZEBRA_OK) + { + int i; + for (i = 0; i < *num_result_sets; i++) + rset_delete((*result_sets)[i]); + grep_info_delete (&grep_info); + return res; + } + if ((*result_sets)[*num_result_sets] == 0) + break; + (*num_result_sets)++; + } + grep_info_delete(&grep_info); + return ZEBRA_OK; +} -static RSET rpn_search_APT (ZServerInfo *zi, Z_AttributesPlusTerm *zapt) +static ZEBRA_RES 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, + NMEM rset_nmem, + RSET *rset, + struct rset_key_control *kc) { - char termz[256]; - size_t sizez; - struct rset_isam_parms parms; - const char *info; - Z_Term *term = zapt->term; + RSET *result_sets = 0; + int num_result_sets = 0; + ZEBRA_RES res = + term_list_trunc(zh, zapt, termz_org, attributeSet, + stream, reg_type, complete_flag, + rank_type, xpath_use, + num_bases, basenames, + rset_nmem, + &result_sets, &num_result_sets, kc); + if (res != ZEBRA_OK) + return res; + if (num_result_sets == 0) + *rset = rsnull_create (rset_nmem, kc); + else if (num_result_sets == 1) + *rset = result_sets[0]; + else + *rset = rsprox_create(rset_nmem, kc, kc->scope, + num_result_sets, result_sets, + 1 /* ordered */, 0 /* exclusion */, + 3 /* relation */, 1 /* distance */); + if (!*rset) + return ZEBRA_FAIL; + return ZEBRA_OK; +} + +static ZEBRA_RES 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, + NMEM rset_nmem, + RSET *rset, + struct rset_key_control *kc) +{ + RSET *result_sets = 0; + int num_result_sets = 0; + ZEBRA_RES res = + term_list_trunc(zh, zapt, termz_org, attributeSet, + stream, reg_type, complete_flag, + rank_type, xpath_use, + num_bases, basenames, + rset_nmem, + &result_sets, &num_result_sets, kc); + if (res != ZEBRA_OK) + return res; + if (num_result_sets == 0) + *rset = rsnull_create (rset_nmem, kc); + else if (num_result_sets == 1) + *rset = result_sets[0]; + else + *rset = rsmulti_or_create(rset_nmem, kc, kc->scope, + num_result_sets, result_sets); + if (!*rset) + return ZEBRA_FAIL; + return ZEBRA_OK; +} + +static ZEBRA_RES 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, + NMEM rset_nmem, + RSET *rset, + struct rset_key_control *kc) +{ + RSET *result_sets = 0; + int num_result_sets = 0; + ZEBRA_RES res = + term_list_trunc(zh, zapt, termz_org, attributeSet, + stream, reg_type, complete_flag, + rank_type, xpath_use, + num_bases, basenames, + rset_nmem, + &result_sets, &num_result_sets, + kc); + if (res != ZEBRA_OK) + return res; + if (num_result_sets == 0) + *rset = rsnull_create (rset_nmem, kc); + else if (num_result_sets == 1) + *rset = result_sets[0]; + else + *rset = rsmulti_and_create(rset_nmem, kc, kc->scope, + num_result_sets, result_sets); + if (!*rset) + return ZEBRA_FAIL; + return ZEBRA_OK; +} + +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, + int *error_code) +{ + AttrType relation; + int relation_value; + int term_value; + int r; + char *term_tmp = term_dict + strlen(term_dict); + + *error_code = 0; + attr_init(&relation, zapt, 2); + relation_value = attr_find(&relation, NULL); + + yaz_log(log_level_rpn, "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_level_rpn, "Relation <"); + gen_regular_rel(term_tmp, term_value-1, 1); + break; + case 2: + yaz_log(log_level_rpn, "Relation <="); + gen_regular_rel(term_tmp, term_value, 1); + break; + case 4: + yaz_log(log_level_rpn, "Relation >="); + gen_regular_rel(term_tmp, term_value, 0); + break; + case 5: + yaz_log(log_level_rpn, "Relation >"); + gen_regular_rel(term_tmp, term_value+1, 0); + break; + case -1: + case 3: + yaz_log(log_level_rpn, "Relation ="); + sprintf(term_tmp, "(0*%d)", term_value); + break; + default: + *error_code = 117; + return 0; + } + yaz_log(log_level_rpn, "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(YLOG_WARN, "dict_lookup_grep fail, rel = gt: %d", r); + yaz_log(log_level_rpn, "%d positions", grep_info->isam_p_indx); + return 1; +} + +static ZEBRA_RES 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; + int relation_error = 0; - if (term->which != Z_Term_general) - return NULL; - sizez = term->u.general->len; - if (sizez > 255) - sizez = 255; - memcpy (termz, term->u.general->buf, sizez); - termz[sizez] = '\0'; - logf (LOG_DEBUG, "dict_lookup: %s", termz); - if (!(info = dict_lookup (zi->wordDict, termz))) - return rset_create (rset_kind_null, NULL); - assert (*info == sizeof(parms.pos)); - memcpy (&parms.pos, info+1, sizeof(parms.pos)); - parms.is = zi->wordIsam; - logf (LOG_DEBUG, "rset_create isam"); - return rset_create (rset_kind_isam, &parms); -} - -static RSET rpn_search_and (ZServerInfo *zi, RSET r_l, RSET r_r) -{ - struct it_key k1, k2; - RSET r_dst; - int i1, i2; - rset_open (r_l, 0); - rset_open (r_r, 0); - r_dst = rset_create (rset_kind_temp, NULL); - rset_open (r_dst, 1); - - i1 = rset_read (r_l, &k1); - i2 = rset_read (r_r, &k2); - while (i1 && i2) - { - if (k1.sysno > k2.sysno) - i2 = rset_read (r_r, &k2); - else if (k1.sysno < k2.sysno) - i1 = rset_read (r_l, &k1); - else if (!(i1 = key_compare_x (&k1, &k2))) - { - rset_write (r_dst, &k1); - i1 = rset_read (r_l, &k1); - i2 = rset_read (r_r, &k2); - } - else if (i1 > 0) - { - rset_write (r_dst, &k2); - i2 = rset_read (r_r, &k2); + 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 { - rset_write (r_dst, &k1); - i1 = rset_read (r_l, &k1); + if ((r = att_getentbyatt (zh, &attp, curAttributeSet, use_value, + use_string))) + { + yaz_log(YLOG_DEBUG, "att_getentbyatt fail. set=%d use=%d r=%d", + curAttributeSet, use_value, r); + if (r == -1) + { + errCode = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE; + if (use_string) + errString = nmem_strdup(stream, use_string); + else + errString = nmem_strdup_i (stream, use_value); + } + else + errCode = YAZ_BIB1_UNSUPP_ATTRIBUTE_SET; + continue; + } } - } - rset_close (r_dst); - return r_dst; + if (zebraExplain_curDatabase (zh->reg->zei, basenames[base_no])) + { + zh->errCode = YAZ_BIB1_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_lookup_attr_su(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; ierrCode = relation_error; + zh->errString = 0; + return ZEBRA_FAIL; + } + *term_sub = 0; + return ZEBRA_OK; + } + } + if (!bases_ok) + { + zh->errCode = errCode; + zh->errString = errString; + return ZEBRA_FAIL; + } + *term_sub = termp; + yaz_log(YLOG_DEBUG, "%d positions", grep_info->isam_p_indx); + return ZEBRA_OK; } -static RSET rpn_search_or (ZServerInfo *zi, RSET r_l, RSET r_r) +static ZEBRA_RES 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, + NMEM rset_nmem, + RSET *rset, + struct rset_key_control *kc) { - return r_l; + char term_dst[IT_MAX_WORD+1]; + const char *termp = termz; + RSET *result_sets = 0; + int num_result_sets = 0; + ZEBRA_RES res; + struct grep_info grep_info; + int alloc_sets = 0; + + yaz_log(log_level_rpn, "APT_numeric t='%s'", termz); + if (grep_info_prepare(zh, zapt, &grep_info, reg_type, stream)) + return ZEBRA_FAIL; + while (1) + { + if (alloc_sets == num_result_sets) + { + int add = 10; + RSET *rnew = (RSET *) nmem_malloc(stream, (alloc_sets+add) * + sizeof(*rnew)); + if (alloc_sets) + memcpy(rnew, result_sets, alloc_sets * sizeof(*rnew)); + alloc_sets = alloc_sets + add; + result_sets = rnew; + } + yaz_log(YLOG_DEBUG, "APT_numeric termp=%s", termp); + grep_info.isam_p_indx = 0; + res = numeric_term(zh, zapt, &termp, attributeSet, &grep_info, + reg_type, complete_flag, num_bases, basenames, + term_dst, xpath_use, + stream); + if (res == ZEBRA_FAIL || termp == 0) + break; + yaz_log(YLOG_DEBUG, "term: %s", term_dst); + result_sets[num_result_sets] = + 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, rset_nmem, + kc, kc->scope); + if (!result_sets[num_result_sets]) + break; + num_result_sets++; + } + grep_info_delete(&grep_info); + if (termp) + { + int i; + for (i = 0; iscope, + num_result_sets, result_sets); + if (!*rset) + return ZEBRA_FAIL; + return ZEBRA_OK; } -static RSET rpn_search_not (ZServerInfo *zi, RSET r_l, RSET r_r) +static ZEBRA_RES rpn_search_APT_local(ZebraHandle zh, + Z_AttributesPlusTerm *zapt, + const char *termz, + oid_value attributeSet, + NMEM stream, + const char *rank_type, NMEM rset_nmem, + RSET *rset, + struct rset_key_control *kc) { - return r_l; + RSFD rsfd; + struct it_key key; + int sys; + *rset = rstemp_create(rset_nmem, kc, kc->scope, + res_get (zh->res, "setTmpDir"),0 ); + rsfd = rset_open(*rset, RSETF_WRITE); + + sys = atoi(termz); + if (sys <= 0) + sys = 1; + key.mem[0] = sys; + key.mem[1] = 1; + key.len = 2; + rset_write (rsfd, &key); + rset_close (rsfd); + return ZEBRA_OK; } -static RSET rpn_search_ref (ZServerInfo *zi, Z_ResultSetId *resultSetId) +static ZEBRA_RES rpn_sort_spec(ZebraHandle zh, Z_AttributesPlusTerm *zapt, + oid_value attributeSet, NMEM stream, + Z_SortKeySpecList *sort_sequence, + const char *rank_type, + RSET *rset, + struct rset_key_control *kc) { - return NULL; + 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; inum_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 ZEBRA_FAIL; + + 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; + *rset = rsnull_create (NULL, kc); + return ZEBRA_OK; } -static RSET rpn_search_structure (ZServerInfo *zi, Z_RPNStructure *zs) + +static int parse_xpath(ZebraHandle zh, Z_AttributesPlusTerm *zapt, + oid_value attributeSet, + struct xpath_location_step *xpath, int max, NMEM mem) { - RSET r; - if (zs->which == Z_RPNStructure_complex) + 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, NMEM rset_nmem, + struct rset_key_control *kc) +{ + RSET rset; + struct grep_info grep_info; + char term_dict[2048]; + char ord_buf[32]; + int prefix_len = 0; + int ord = zebraExplain_lookup_attr_su(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)) + return rsnull_create(rset_nmem, kc); + + if (ord < 0) + return rsnull_create(rset_nmem, kc); + if (prefix_len) + term_dict[prefix_len++] = '|'; + else + term_dict[prefix_len++] = '('; + + ord_len = key_SU_encode (ord, ord_buf); + for (i = 0; ireg->dict, term_dict, 0, + &grep_info, &max_pos, 0, grep_handle); + yaz_log(YLOG_DEBUG, "%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,rset_nmem, + kc, kc->scope); + 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, + NMEM rset_nmem, + struct rset_key_control *kc) +{ + oid_value curAttributeSet = attributeSet; + int base_no; + int i; + + if (xpath_len < 0) + return rset; + + yaz_log(YLOG_DEBUG, "xpath len=%d", xpath_len); + for (i = 0; iu.complex->s1); - r_r = rpn_search_structure (zi, zs->u.complex->s2); + } + + curAttributeSet = VAL_IDXPATH; + + /* + //a -> a/.* + //a/b -> b/a/.* + /a -> a/ + /a/b -> b/a/ + + / -> none - switch (zs->u.complex->operator->which) + 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])) { - case Z_Operator_and: - rset_delete (r_r); - break; - case Z_Operator_or: - rset_delete (r_r); - break; - case Z_Operator_and_not: - rset_delete (r_r); - break; - default: - assert (0); + zh->errCode = YAZ_BIB1_DATABASE_UNAVAILABLE; + zh->errString = basenames[base_no]; + return rset; + } + while (--level >= 0) + { + char xpath_rev[128]; + int i, len; + 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, rset_nmem, kc); + wrbuf_free(wbuf, 1); + } + else + { + if (!first_path) + continue; + } + yaz_log(log_level_rpn, "xpath_rev (%d) = %s", level, xpath_rev); + if (strlen(xpath_rev)) + { + rset_start_tag = xpath_trunc(zh, stream, '0', + xpath_rev, 1, curAttributeSet, rset_nmem, kc); + + rset_end_tag = xpath_trunc(zh, stream, '0', + xpath_rev, 2, curAttributeSet, rset_nmem, kc); + + rset = rsbetween_create(rset_nmem, kc, kc->scope, + rset_start_tag, rset, + rset_end_tag, rset_attr); + } + first_path = 0; } - r = r_l; + } + + return rset; +} + +static ZEBRA_RES rpn_search_APT(ZebraHandle zh, Z_AttributesPlusTerm *zapt, + oid_value attributeSet, NMEM stream, + Z_SortKeySpecList *sort_sequence, + int num_bases, char **basenames, + NMEM rset_nmem, + RSET *rset, + struct rset_key_control *kc) +{ + ZEBRA_RES res = ZEBRA_OK; + unsigned reg_id; + char *search_type = NULL; + char rank_type[128]; + int complete_flag; + int sort_flag; + char termz[IT_MAX_WORD+1]; + int xpath_len; + int xpath_use = 0; + struct xpath_location_step xpath[10]; + + if (!log_level_set) + { + log_level_rpn = yaz_log_module_level("rpn"); + log_level_set = 1; + } + zebra_maps_attr(zh->reg->zebra_maps, zapt, ®_id, &search_type, + rank_type, &complete_flag, &sort_flag); + + yaz_log(YLOG_DEBUG, "reg_id=%c", reg_id); + yaz_log(YLOG_DEBUG, "complete_flag=%d", complete_flag); + yaz_log(YLOG_DEBUG, "search_type=%s", search_type); + yaz_log(YLOG_DEBUG, "rank_type=%s", rank_type); + + if (zapt_term_to_utf8(zh, zapt, termz) == ZEBRA_FAIL) + return ZEBRA_FAIL; + + if (sort_flag) + return rpn_sort_spec(zh, zapt, attributeSet, stream, sort_sequence, + rank_type, rset, kc); + 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")) + { + res = rpn_search_APT_phrase(zh, zapt, termz, attributeSet, stream, + reg_id, complete_flag, rank_type, + xpath_use, + num_bases, basenames, rset_nmem, + rset, kc); + } + else if (!strcmp(search_type, "and-list")) + { + res = rpn_search_APT_and_list(zh, zapt, termz, attributeSet, stream, + reg_id, complete_flag, rank_type, + xpath_use, + num_bases, basenames, rset_nmem, + rset, kc); + } + else if (!strcmp(search_type, "or-list")) + { + res = rpn_search_APT_or_list(zh, zapt, termz, attributeSet, stream, + reg_id, complete_flag, rank_type, + xpath_use, + num_bases, basenames, rset_nmem, + rset, kc); + } + else if (!strcmp(search_type, "local")) + { + res = rpn_search_APT_local(zh, zapt, termz, attributeSet, stream, + rank_type, rset_nmem, rset, kc); + } + else if (!strcmp(search_type, "numeric")) + { + res = rpn_search_APT_numeric(zh, zapt, termz, attributeSet, stream, + reg_id, complete_flag, rank_type, + xpath_use, + num_bases, basenames, rset_nmem, + rset, kc); + } + else + { + zh->errCode = YAZ_BIB1_UNSUPP_STRUCTURE_ATTRIBUTE; + return ZEBRA_FAIL; + } + if (res != ZEBRA_OK) + return res; + if (!*rset) + return ZEBRA_FAIL; + *rset = rpn_search_xpath(zh, attributeSet, num_bases, basenames, + stream, rank_type, *rset, + xpath_len, xpath, rset_nmem, kc); + if (!*rset) + return ZEBRA_FAIL; + return ZEBRA_OK; +} + +static ZEBRA_RES rpn_search_structure(ZebraHandle zh, Z_RPNStructure *zs, + oid_value attributeSet, + NMEM stream, NMEM rset_nmem, + Z_SortKeySpecList *sort_sequence, + int num_bases, char **basenames, + RSET **result_sets, int *num_result_sets, + Z_Operator *parent_op, + struct rset_key_control *kc); + +ZEBRA_RES rpn_search_top(ZebraHandle zh, Z_RPNStructure *zs, + oid_value attributeSet, + NMEM stream, NMEM rset_nmem, + Z_SortKeySpecList *sort_sequence, + int num_bases, char **basenames, + RSET *result_set) +{ + RSET *result_sets = 0; + int num_result_sets = 0; + ZEBRA_RES res; + struct rset_key_control *kc = zebra_key_control_create(zh); + + res = rpn_search_structure(zh, zs, attributeSet, + stream, rset_nmem, + sort_sequence, + num_bases, basenames, + &result_sets, &num_result_sets, + 0 /* no parent op */, + kc); + if (res != ZEBRA_OK) + { + int i; + for (i = 0; idec)(kc); + return ZEBRA_OK; +} + +ZEBRA_RES rpn_search_structure(ZebraHandle zh, Z_RPNStructure *zs, + oid_value attributeSet, + NMEM stream, NMEM rset_nmem, + Z_SortKeySpecList *sort_sequence, + int num_bases, char **basenames, + RSET **result_sets, int *num_result_sets, + Z_Operator *parent_op, + struct rset_key_control *kc) +{ + *num_result_sets = 0; + if (zs->which == Z_RPNStructure_complex) + { + ZEBRA_RES res; + Z_Operator *zop = zs->u.complex->roperator; + RSET *result_sets_l = 0; + int num_result_sets_l = 0; + RSET *result_sets_r = 0; + int num_result_sets_r = 0; + + res = rpn_search_structure(zh, zs->u.complex->s1, + attributeSet, stream, rset_nmem, + sort_sequence, + num_bases, basenames, + &result_sets_l, &num_result_sets_l, + zop, kc); + if (res != ZEBRA_OK) + { + int i; + for (i = 0; iu.complex->s2, + attributeSet, stream, rset_nmem, + sort_sequence, + num_bases, basenames, + &result_sets_r, &num_result_sets_r, + zop, kc); + if (res != ZEBRA_OK) + { + int i; + for (i = 0; iwhich != zop->which + || (zop->which != Z_Operator_and && + zop->which != Z_Operator_or)) + { + /* parent node different from this one (or non-present) */ + /* we must combine result sets now */ + RSET rset; + switch (zop->which) + { + case Z_Operator_and: + rset = rsmulti_and_create(rset_nmem, kc, + kc->scope, + *num_result_sets, *result_sets); + break; + case Z_Operator_or: + rset = rsmulti_or_create(rset_nmem, kc, + kc->scope, + *num_result_sets, *result_sets); + break; + case Z_Operator_and_not: + rset = rsbool_create_not(rset_nmem, kc, + kc->scope, + (*result_sets)[0], + (*result_sets)[1]); + break; + case Z_Operator_prox: + if (zop->u.prox->which != Z_ProximityOperator_known) + { + zh->errCode = YAZ_BIB1_UNSUPP_PROX_UNIT_CODE; + return ZEBRA_FAIL; + } + if (*zop->u.prox->u.known != Z_ProxUnit_word) + { + char *val = (char *) nmem_malloc(stream, 16); + zh->errCode = YAZ_BIB1_UNSUPP_PROX_UNIT_CODE; + zh->errString = val; + sprintf(val, "%d", *zop->u.prox->u.known); + return ZEBRA_FAIL; + } + else + { + rset = rsprox_create(rset_nmem, kc, + kc->scope, + *num_result_sets, *result_sets, + *zop->u.prox->ordered, + (!zop->u.prox->exclusion ? + 0 : *zop->u.prox->exclusion), + *zop->u.prox->relationType, + *zop->u.prox->distance ); + } + break; + default: + zh->errCode = YAZ_BIB1_OPERATOR_UNSUPP; + return ZEBRA_FAIL; + } + *num_result_sets = 1; + *result_sets = nmem_malloc(stream, *num_result_sets * + sizeof(**result_sets)); + (*result_sets)[0] = rset; + } } else if (zs->which == Z_RPNStructure_simple) { + RSET rset; + ZEBRA_RES res; + if (zs->u.simple->which == Z_Operand_APT) { - logf (LOG_DEBUG, "rpn_search_APT"); - r = rpn_search_APT (zi, zs->u.simple->u.attributesPlusTerm); + yaz_log(YLOG_DEBUG, "rpn_search_APT"); + res = rpn_search_APT(zh, zs->u.simple->u.attributesPlusTerm, + attributeSet, stream, sort_sequence, + num_bases, basenames, rset_nmem, &rset, + kc); + if (res != ZEBRA_OK) + return res; } else if (zs->u.simple->which == Z_Operand_resultSetId) { - logf (LOG_DEBUG, "rpn_search_ref"); - r = rpn_search_ref (zi, zs->u.simple->u.resultSetId); + yaz_log(YLOG_DEBUG, "rpn_search_ref"); + rset = resultSetRef(zh, zs->u.simple->u.resultSetId); + if (!rset) + { + zh->errCode = YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST; + zh->errString = + nmem_strdup(stream, zs->u.simple->u.resultSetId); + return ZEBRA_FAIL; + } + rset_dup(rset); } else { - assert (0); + zh->errCode = YAZ_BIB1_UNSUPP_SEARCH; + return ZEBRA_FAIL; } + *num_result_sets = 1; + *result_sets = nmem_malloc(stream, *num_result_sets * + sizeof(**result_sets)); + (*result_sets)[0] = rset; } else { - assert (0); + zh->errCode = YAZ_BIB1_UNSUPP_SEARCH; + return ZEBRA_FAIL; } - return r; + return ZEBRA_OK; +} + +struct scan_info_entry { + char *term; + ISAM_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; + + if (idx < 0) + return 0; + 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(ISAM_P)); + memcpy (&scan_info->list[idx].isam_p, info+1, sizeof(ISAM_P)); + return 0; } -static RSET rpn_save_set (RSET r, int *count) +static void scan_term_untrans (ZebraHandle zh, NMEM stream, int reg_type, + char **dst, const char *src) { -#if 0 - RSET d; - rset_temp_parms parms; -#endif - int psysno = 0; + 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) +{ + zint psysno = 0; + int kno = 0; struct it_key key; + RSFD rfd; - logf (LOG_DEBUG, "rpn_save_set"); - *count = 0; -#if 0 - parms.key_size = sizeof(struct it_key); - d = rset_create (rset_kind_temp, &parms); - rset_open (d, 1); -#endif + yaz_log(YLOG_DEBUG, "count_set"); - rset_open (r, 0); - while (rset_read (r, &key)) + *count = 0; + rfd = rset_open (r, RSETF_READ); + while (rset_read (rfd, &key,0 /* never mind terms */)) { - if (key.sysno != psysno) + if (key.mem[0] != psysno) { - psysno = key.sysno; + psysno = key.mem[0]; (*count)++; } -#if 0 - rset_write (d, &key); -#endif + kno++; } - rset_close (r); -#if 0 - rset_close (d); -#endif - logf (LOG_DEBUG, "%d distinct sysnos", *count); -#if 0 - return d; -#endif + rset_close (rfd); + yaz_log(YLOG_DEBUG, "%d keys, %d records", kno, *count); } -int rpn_search (ZServerInfo *zi, - Z_RPNQuery *rpn, int num_bases, char **basenames, - const char *setname, int *hits) +ZEBRA_RES 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) { - RSET rset, result_rset; + 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]; - rset = rpn_search_structure (zi, rpn->RPNStructure); - if (!rset) - return 0; - result_rset = rpn_save_set (rset, hits); -#if 0 - rset_delete (result_rset); -#endif + int bases_ok = 0; /* no of databases with OK attribute */ + int errCode = 0; /* err code (if any is not OK) */ + char *errString = 0; /* addinfo */ - resultSetAdd (zi, setname, 1, rset); - return 0; + unsigned reg_id; + char *search_type = NULL; + char rank_type[128]; + int complete_flag; + int sort_flag; + NMEM rset_nmem = NULL; + struct rset_key_control *kc = 0; + + *list = 0; + *is_partial = 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(YLOG_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 = YAZ_BIB1_UNSUPP_ATTRIBUTE_TYPE; + return ZEBRA_FAIL; + } + yaz_log(YLOG_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++) + { + data1_local_attribute *local_attr; + attent attp; + int ord; + + if (zebraExplain_curDatabase (zh->reg->zei, basenames[base_no])) + { + zh->errString = basenames[base_no]; + zh->errCode = YAZ_BIB1_DATABASE_UNAVAILABLE; + *num_entries = 0; + return ZEBRA_FAIL; + } + + if (use_string && + (ord = zebraExplain_lookup_attr_str(zh->reg->zei, + use_string)) >= 0) + { + /* we have a match for a raw string attribute */ + if (ord > 0) + ords[ord_no++] = ord; + attp.local_attributes = 0; /* no more attributes */ + } + else + { + int r; + + if ((r = att_getentbyatt (zh, &attp, attributeset, use_value, + use_string))) + { + yaz_log(YLOG_DEBUG, "att_getentbyatt fail. set=%d use=%d", + attributeset, use_value); + if (r == -1) + { + errCode = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE; + if (use_string) + errString = odr_strdup(stream, use_string); + else + { + char val_str[32]; + sprintf(val_str, "%d", use_value); + errString = odr_strdup(stream, val_str); + } + } + else + errCode = YAZ_BIB1_UNSUPP_ATTRIBUTE_SET; + continue; + } + } + bases_ok++; + for (local_attr = attp.local_attributes; local_attr && ord_no < 32; + local_attr = local_attr->next) + { + ord = zebraExplain_lookup_attr_su(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; + return ZEBRA_FAIL; + } + if (ord_no == 0) + { + *num_entries = 0; + return ZEBRA_OK; + } + /* prepare dictionary scanning */ + if (num < 1) + { + *num_entries = 0; + return ZEBRA_OK; + } + before = pos-1; + if (before < 0) + before = 0; + after = 1+num-pos; + if (after < 0) + after = 0; + yaz_log(YLOG_DEBUG, "rpn_scan pos=%d num=%d before=%d " + "after=%d before+after=%d", + pos, num, before, after, before+after); + 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; jlist[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) == ZEBRA_FAIL) + return ZEBRA_FAIL; + + dict_scan(zh->reg->dict, termz, &before_tmp, &after_tmp, + scan_info, scan_handle); + } + glist = (ZebraScanEntry *) + odr_malloc(stream, (before+after)*sizeof(*glist)); + + rset_nmem = nmem_create(); + kc = zebra_key_control_create(zh); + + /* consider terms after main term */ + for (i = 0; i < ord_no; i++) + ptr[i] = before; + + *is_partial = 0; + for (i = 0; i= 0 && + (tst = scan_info_array[j].list[ptr[j]].term) && + (!mterm || strcmp (tst, mterm) < 0)) + { + j0 = j; + mterm = tst; + } + } + if (j0 == -1) + break; /* no value found, stop */ + + /* get result set for first one , but only if it's within bounds */ + if (lo >= 0) + { + /* get result set for first term */ + scan_term_untrans(zh, stream->mem, reg_id, + &glist[lo].term, mterm); + rset = rset_trunc(zh, &scan_info_array[j0].list[ptr[j0]].isam_p, 1, + glist[lo].term, strlen(glist[lo].term), + NULL, 0, zapt->term->which, rset_nmem, + kc, kc->scope); + } + ptr[j0]++; /* move index for this set .. */ + /* get result set for remaining scan terms */ + for (j = j0+1; j= 0 && + (tst = scan_info_array[j].list[ptr[j]].term) && + !strcmp (tst, mterm)) + { + if (lo >= 0) + { + RSET rsets[2]; + + rsets[0] = rset; + rsets[1] = + rset_trunc( + zh, &scan_info_array[j].list[ptr[j]].isam_p, 1, + glist[lo].term, + strlen(glist[lo].term), NULL, 0, + zapt->term->which,rset_nmem, + kc, kc->scope); + rset = rsmulti_or_create(rset_nmem, kc, + 2, kc->scope, rsets); + } + ptr[j]++; + } + } + if (lo >= 0) + { + /* merge with limit_set if given */ + if (limit_set) + { + RSET rsets[2]; + rsets[0] = rset; + rsets[1] = rset_dup(limit_set); + + rset = rsmulti_and_create(rset_nmem, kc, + kc->scope, 2, rsets); + } + /* count it */ + count_set(rset, &glist[lo].occurrences); + rset_delete(rset); + } + } + if (i < after) + { + *num_entries -= (after-i); + *is_partial = 1; + if (*num_entries < 0) + { + (*kc->dec)(kc); + nmem_destroy(rset_nmem); + *num_entries = 0; + return ZEBRA_OK; + } + } + /* consider terms before main term */ + for (i = 0; i= 0 && + (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[lo].term, mterm); + + rset = rset_trunc + (zh, &scan_info_array[j0].list[before-1-ptr[j0]].isam_p, 1, + glist[lo].term, strlen(glist[lo].term), + NULL, 0, zapt->term->which,rset_nmem, + kc, kc->scope); + + ptr[j0]++; + + for (j = j0+1; j= 0 && + (tst = scan_info_array[j].list[before-1-ptr[j]].term) && + !strcmp (tst, mterm)) + { + RSET rsets[2]; + + rsets[0] = rset; + rsets[1] = rset_trunc( + zh, + &scan_info_array[j].list[before-1-ptr[j]].isam_p, 1, + glist[lo].term, + strlen(glist[lo].term), NULL, 0, + zapt->term->which, rset_nmem, + kc, kc->scope); + rset = rsmulti_or_create(rset_nmem, kc, + 2, kc->scope, rsets); + + ptr[j]++; + } + } + if (limit_set) + { + RSET rsets[2]; + rsets[0] = rset; + rsets[1] = rset_dup(limit_set); + + rset = rsmulti_and_create(rset_nmem, kc, + kc->scope, 2, rsets); + } + count_set (rset, &glist[lo].occurrences); + rset_delete (rset); + } + (*kc->dec)(kc); + nmem_destroy(rset_nmem); + i = before-i; + if (i) + { + *is_partial = 1; + *position -= i; + *num_entries -= i; + if (*num_entries <= 0) + { + *num_entries = 0; + return ZEBRA_OK; + } + } + + *list = glist + i; /* list is set to first 'real' entry */ + + yaz_log(YLOG_DEBUG, "position = %d, num_entries = %d", + *position, *num_entries); + return ZEBRA_OK; }