153 lines
4.1 KiB
C++
153 lines
4.1 KiB
C++
#include "searchworker.h"
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#include <QRegularExpression>
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#include <QDebug>
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#include <QSqlError>
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SearchWorker::SearchWorker()
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{
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}
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SearchWorker::SearchWorker(const QString &dbpath)
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{
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db = QSqlDatabase::addDatabase("QSQLITE");
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db.setDatabaseName(dbpath);
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if(!db.open())
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{
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qDebug() << "failed to open database";
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}
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}
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QVector<SearchWorker::Command> SearchWorker::tokenize(QString expression)
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{
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//TODO: merge lonewords
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QVector<Command> result;
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QRegularExpression rx("((?<filtername>(\\.|\\w)+):(?<args>\\((?<innerargs>[^\\)]+)\\)|(\\w)+)|(?<boolean>AND|OR|!)|(?<bracket>\\(|\\))|(?<loneword>\\w+))");
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QRegularExpressionMatchIterator i = rx.globalMatch(expression);
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bool wasbool = true;
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while(i.hasNext())
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{
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QRegularExpressionMatch m = i.next();
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QString boolean = m.captured("boolean");
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QString filtername = m.captured("filtername");
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QString bracket = m.captured("bracket");
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QString loneword = m.captured("loneword");
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if(boolean != "")
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{
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/* if(wasbool)
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{
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throw new std::runtime_error("Bool after Bool is invalid");
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}*/
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wasbool = true;
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result.append(Command(boolean));
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}
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if(bracket != "")
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{
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if(!wasbool)
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{
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if(bracket == "(")
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{
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result.append(Command("AND"));
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}
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}
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result.append(Command(bracket));
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}
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if(loneword != "")
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{
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if(!wasbool)
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{
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result.append(Command("AND"));
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}
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wasbool = false;
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result.append(Command("path.contains", loneword));
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}
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if(filtername != "")
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{
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if(!wasbool)
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{
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result.append(Command("AND"));
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}
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wasbool = false;
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QString value = m.captured("innerargs");
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if(value == "")
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value = m.captured("args");
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result.append(Command(filtername, value));
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}
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}
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return result;
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}
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QString SearchWorker::createSql(const SearchWorker::Command &cmd)
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{
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QString key = cmd.key;
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QString value = cmd.value;
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if(key == "AND" || key == "OR" || key=="(" || key==")")
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{
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return " " + key + " ";
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}
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if(key == "!")
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{
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return " NOT ";
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}
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if(key == "path.starts")
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{
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return " file.path LIKE '" + value + "%' ";
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}
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if(key == "path.ends")
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{
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return " file.path LIKE '%" + value + "' ";
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}
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if(key == "path.contains" || key == "inpath")
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{
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return " file.path LIKE '%" + value + "%' ";
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}
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if(key == "page")
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{
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return " content.page = " + value;
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}
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if(key == "contains" || key == "c")
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{
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return " ( COALESCE( (SELECT 1 FROM content_fts WHERE content_fts.content MATCH '" + value + "' AND content_fts.ROWID= content.id), 0 ) )";
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}
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qDebug() << "NOHIT" << key;
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//TODO: exception?
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return "NOTHING";
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}
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QString SearchWorker::makeSql(const QVector<SearchWorker::Command> &tokens)
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{
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QString result;
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for(const Command &c : tokens)
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{
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result += createSql(c);
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}
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return result;
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}
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void SearchWorker::search(const QString &query)
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{
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QSqlQuery dbquery(db);
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QVector<SearchResult> results;
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QString whereSql = makeSql(tokenize(query));
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QString prep = "SELECT file.path AS path, content.page AS page, file.mtime AS mtime FROM file INNER JOIN content ON file.id = content.fileid INNER JOIN content_fts ON content.id = content_fts.ROWID WHERE 1=1 AND " + whereSql + " ORDER By file.mtime DESC, content.page ASC";
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dbquery.prepare(prep);
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dbquery.exec();
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qDebug() << "prepped: " << prep;
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qDebug() << dbquery.lastError();
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while(dbquery.next())
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{
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SearchResult result;
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result.path = dbquery.value("path").toString();
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result.page = dbquery.value("page").toUInt();
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result.mtime = dbquery.value("mtime").toUInt();
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results.append(result);
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}
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emit searchResultsReady(results);
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}
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