#ifndef lint
static char rcsid[] = "@(#$Id: wasatorcl.cpp,v 1.13 2008-01-16 11:14:38 dockes Exp $ (C) 2006 J.F.Dockes";
#endif
/*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <string>
#include <list>
using std::string;
using std::list;
#include "wasastringtoquery.h"
#include "rcldb.h"
#include "searchdata.h"
#include "wasatorcl.h"
#include "debuglog.h"
#include "smallut.h"
#include "rclconfig.h"
Rcl::SearchData *wasaStringToRcl(const string &qs, string &reason)
{
StringToWasaQuery parser;
WasaQuery *wq = parser.stringToQuery(qs, reason);
if (wq == 0)
return 0;
Rcl::SearchData *rq = wasaQueryToRcl(wq);
if (rq == 0) {
reason = "Failed translating wasa query structure to recoll";
return 0;
}
return rq;
}
Rcl::SearchData *wasaQueryToRcl(WasaQuery *wasa)
{
if (wasa == 0)
return 0;
if (wasa->m_op != WasaQuery::OP_AND && wasa->m_op != WasaQuery::OP_OR) {
LOGERR(("wasaQueryToRcl: top query neither AND nor OR!\n"));
return 0;
}
Rcl::SearchData *sdata = new
Rcl::SearchData(wasa->m_op == WasaQuery::OP_AND ? Rcl::SCLT_AND :
Rcl::SCLT_OR);
WasaQuery::subqlist_t::iterator it;
Rcl::SearchDataClause *nclause;
for (it = wasa->m_subs.begin(); it != wasa->m_subs.end(); it++) {
switch ((*it)->m_op) {
case WasaQuery::OP_NULL:
case WasaQuery::OP_AND:
default:
LOGINFO(("wasaQueryToRcl: found bad NULL or AND q type in list\n"));
continue;
case WasaQuery::OP_LEAF:
// Special cases (mime, category, dir filter ...). Not pretty.
if (!stringicmp("mime", (*it)->m_fieldspec)) {
sdata->addFiletype((*it)->m_value);
break;
}
// Xesam uses "type", we also support "rclcat", for broad
// categories like "audio", "presentation", etc.
if (!stringicmp("rclcat", (*it)->m_fieldspec) ||
!stringicmp("type", (*it)->m_fieldspec)) {
RclConfig *conf = RclConfig::getMainConfig();
list<string> mtypes;
if (conf && conf->getMimeCatTypes((*it)->m_value, mtypes)) {
for (list<string>::iterator mit = mtypes.begin();
mit != mtypes.end(); mit++) {
sdata->addFiletype(*mit);
}
}
break;
}
if (!stringicmp("dir", (*it)->m_fieldspec)) {
sdata->setTopdir((*it)->m_value);
break;
}
if ((*it)->m_value.find_first_of(" \t\n\r") != string::npos) {
nclause = new Rcl::SearchDataClauseDist(Rcl::SCLT_PHRASE,
(*it)->m_value, 0,
(*it)->m_fieldspec);
} else {
nclause = new Rcl::SearchDataClauseSimple(Rcl::SCLT_AND,
(*it)->m_value,
(*it)->m_fieldspec);
}
if (nclause == 0) {
LOGERR(("wasaQueryToRcl: out of memory\n"));
return 0;
}
if ((*it)->m_modifiers & WasaQuery::WQM_NOSTEM) {
fprintf(stderr, "Setting NOSTEM\n");
nclause->setModifiers(Rcl::SearchDataClause::SDCM_NOSTEMMING);
}
sdata->addClause(nclause);
break;
case WasaQuery::OP_EXCL:
if (wasa->m_op != WasaQuery::OP_AND) {
LOGERR(("wasaQueryToRcl: negative clause inside OR list!\n"));
continue;
}
// Note: have to add dquotes which will be translated to
// phrase if there are several words in there. Not pretty
// but should work. If there is actually a single
// word, it will not be taken as a phrase, and
// stem-expansion will work normally
nclause = new Rcl::SearchDataClauseSimple(Rcl::SCLT_EXCL,
string("\"") +
(*it)->m_value + "\"",
(*it)->m_fieldspec);
if (nclause == 0) {
LOGERR(("wasaQueryToRcl: out of memory\n"));
return 0;
}
if ((*it)->m_modifiers & WasaQuery::WQM_NOSTEM)
nclause->setModifiers(Rcl::SearchDataClause::SDCM_NOSTEMMING);
sdata->addClause(nclause);
break;
case WasaQuery::OP_OR:
// Create a subquery.
Rcl::SearchData *sub = wasaQueryToRcl(*it);
if (sub == 0) {
continue;
}
nclause = new Rcl::SearchDataClauseSub(Rcl::SCLT_SUB, sub);
if (nclause == 0) {
LOGERR(("wasaQueryToRcl: out of memory\n"));
return 0;
}
if ((*it)->m_modifiers & WasaQuery::WQM_NOSTEM)
nclause->setModifiers(Rcl::SearchDataClause::SDCM_NOSTEMMING);
sdata->addClause(nclause);
}
}
return sdata;
}