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Begin sort: statement implementation, use bindvalues in all search filters, gui: save current scale

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This commit is contained in:
Albert S. 2019-04-25 10:27:54 +02:00
parent 131ab2e4e8
commit e2f07d2357
4 changed files with 164 additions and 192 deletions
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7
gui/mainwindow.cpp
View File

@ -13,6 +13,7 @@
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "clicklabel.h"
#include "../shared/sqlitesearch.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
@ -31,6 +32,8 @@ MainWindow::MainWindow(QWidget *parent) :
ui->statusBar->addWidget(ui->lblSearchResults);
ui->statusBar->addWidget(ui->pdfProcessBar);
ui->pdfProcessBar->hide();
QSettings settings;
ui->comboScale->setCurrentText(settings.value("currentScale").toString());
}
void MainWindow::connectSignals()
@ -51,6 +54,8 @@ void MainWindow::connectSignals()
void MainWindow::comboScaleChanged(QString text)
{
QSettings scaleSetting;
scaleSetting.setValue("currentScale", ui->comboScale->currentText());
makePdfPreview();
}
bool MainWindow::pdfTabActive()
@ -126,7 +131,7 @@ void MainWindow::pdfPreviewReceived(PdfPreview preview)
void MainWindow::lineEditReturnPressed()
{
QString q = ui->txtSearch->text();
if(!searchWorker->checkParanthesis(q))
if(!SqliteSearch::checkParanthesis(q))
{
ui->lblSearchResults->setText("Invalid paranthesis");
return;

148
gui/searchworker.cpp
View File

@ -19,157 +19,9 @@ SearchWorker::SearchWorker(const QString &dbpath)
}
}
QVector<SearchWorker::Command> SearchWorker::tokenize(QString expression)
{
if(!checkParanthesis(expression))
{
throw std::invalid_argument("Invalid paranthesis");
}
//TODO: merge lonewords
QVector<Command> result;
QRegularExpression rx("((?<filtername>(\\.|\\w)+):(?<args>\\((?<innerargs>[^\\)]+)\\)|(\\w)+)|(?<boolean>AND|OR|!)|(?<bracket>\\(|\\))|(?<loneword>\\w+))");
QRegularExpressionMatchIterator i = rx.globalMatch(expression);
bool wasbool = true;
while(i.hasNext())
{
QRegularExpressionMatch m = i.next();
QString boolean = m.captured("boolean");
QString filtername = m.captured("filtername");
QString bracket = m.captured("bracket");
QString loneword = m.captured("loneword");
if(boolean != "")
{
/* if(wasbool)
{
throw new std::runtime_error("Bool after Bool is invalid");
}*/
wasbool = true;
result.append(Command(boolean));
}
if(bracket != "")
{
if(!wasbool)
{
if(bracket == "(")
{
result.append(Command("AND"));
}
}
result.append(Command(bracket));
}
if(loneword != "")
{
if(!wasbool)
{
result.append(Command("AND"));
}
wasbool = false;
result.append(Command("path.contains", loneword));
}
if(filtername != "")
{
if(!wasbool)
{
result.append(Command("AND"));
}
wasbool = false;
QString value = m.captured("innerargs");
if(value == "")
value = m.captured("args");
result.append(Command(filtername, value));
}
}
return result;
}
QString SearchWorker::createSql(const SearchWorker::Command &cmd)
{
QString key = cmd.key;
QString value = cmd.value;
value = value.replace("'", "\\'");
if(key == "AND" || key == "OR" || key=="(" || key==")")
{
return " " + key + " ";
}
if(key == "!")
{
return " NOT ";
}
if(key == "path.starts")
{
return " file.path LIKE '" + value + "%' ";
}
if(key == "path.ends")
{
return " file.path LIKE '%" + value + "' ";
}
if(key == "path.contains" || key == "inpath")
{
return " file.path LIKE '%" + value + "%' ";
}
if(key == "page")
{
return " content.page = " + value;
}
if(key == "contains" || key == "c")
{
return " content.id IN (SELECT content_fts.ROWID FROM content_fts WHERE content_fts.content MATCH '" + value + "' )";
}
throw std::invalid_argument("Unknown filter: " + key.toStdString());
}
QString SearchWorker::makeSql(const QVector<SearchWorker::Command> &tokens)
{
QString result;
for(const Command &c : tokens)
{
result += createSql(c);
}
return result;
}
bool SearchWorker::checkParanthesis(QString expression)
{
QStack<QChar> open;
QStack<QChar> close;
for(QChar &c : expression)
{
if(c == '(')
{
open.push(c);
}
if(c == ')')
{
close.push(c);
}
}
if(open.size() != close.size())
{
return false;
}
while(!open.empty() && !close.empty())
{
QChar o = open.pop();
QChar c = close.pop();
if(o != '(' && c != ')' )
{
return false;
}
}
return true;
}
void SearchWorker::search(const QString &query)
{
SqliteSearch searcher(db);
emit searchResultsReady(searcher.search(query));
}

183
shared/sqlitesearch.cpp
View File

@ -2,6 +2,7 @@
#include <QRegularExpression>
#include <QSqlQuery>
#include <QSqlError>
#include <QStringList>
#include <QDebug>
#include "sqlitesearch.h"
#include "qssgeneralexception.h"
@ -79,85 +80,195 @@ QVector<SqliteSearch::Token> SqliteSearch::tokenize(QString expression)
}
QString SqliteSearch::createSql(const SqliteSearch::Token &token)
QString SqliteSearch::fieldToColumn(QString field)
{
if(field == "mtime" || field == "file.mtime")
{
return "file.mtime";
}
else if(field == "page" || field == "content.page")
{
return "content.page";
}
else if(field == "path" || field == "file.path")
{
return "file.path";
}
else if(field == "size" || field == "file.size")
{
return "file.size";
}
return "";
}
QString SqliteSearch::createSortSql(const SqliteSearch::Token &token)
{
//sort:(mtime desc, page asc)
if(token.key == "sort")
{
QString sortsql = " ORDER BY ";
QStringList splitted_inner = token.value.split(",");
for(int i = 0; i < splitted_inner.length(); i++)
{
QStringList splitted = splitted_inner[i].split(" ");
if(splitted.length() == 2)
{
QString field = splitted[0];
QString order = splitted[1];
if(order.compare("asc", Qt::CaseInsensitive))
{
order = "ASC";
}
else if(order.compare("desc", Qt::CaseInsensitive))
{
order = "DESC";
}
else
{
throw QSSGeneralException("Unknown order specifier: " + order);
}
field = fieldToColumn(field);
if(field == "")
{
throw QSSGeneralException("Unknown field:" + field);
}
sortsql += field + " " + order;
if(splitted_inner.length() - i > 1)
{
sortsql += ", ";
}
}
else if(splitted.length() == 1)
{
sortsql += splitted[0] + " ASC ";
}
else
{
throw QSSGeneralException("sort specifier must have format [field] (asc|desc)");
}
}
return sortsql;
}
return "";
}
QPair<QString, QVector<QString>> SqliteSearch::createSql(const SqliteSearch::Token &token)
{
QPair<QString, QVector<QString>> result;
QString key = token.key;
QString value = token.value;
value = value.replace("'", "\\'");
if(key == "AND" || key == "OR" || key == "(" || key == ")")
{
return " " + key + " ";
return { " " + key + " ", QVector<QString>() };
}
if(key == "!")
{
return " NOT ";
return { " NOT ", QVector<QString>() };
}
if(key == "path.starts")
{
return " file.path LIKE '" + value + "%' ";
return { " file.path LIKE ? || '%' ", { value } };
}
if(key == "path.ends")
{
return " file.path LIKE '%" + value + "' ";
return { " file.path LIKE '%' || ? ", { value } };
}
if(key == "path.contains" || key == "inpath")
{
return " file.path LIKE '%" + value + "%' ";
return { " file.path LIKE '%' || ? || '%' ", { value } } ;
}
if(key == "page")
{
return " content.page = " + value;
return { " content.page = ?", { value } };
}
if(key == "contains" || key == "c")
{
return " content.id IN (SELECT content_fts.ROWID FROM content_fts WHERE content_fts.content MATCH '" + value + "' )";
return { " content.id IN (SELECT content_fts.ROWID FROM content_fts WHERE content_fts.content MATCH ?) " , { value } };
}
throw QSSGeneralException("Unknown token: " + key);
}
QString SqliteSearch::makeSql(const QVector<SqliteSearch::Token> &tokens)
QSqlQuery SqliteSearch::makeSqlQuery(const QVector<SqliteSearch::Token> &tokens)
{
QString result;
QString whereSql;
QString sortSql;
QString limitSql;
QVector<QString> bindValues;
bool isContentSearch = false;
for(const Token &c : tokens)
{
result += createSql(c);
if(c.key == "sort")
{
if(sortSql != "")
{
throw QSSGeneralException("Invalid input: Two seperate sort statements are invalid");
}
sortSql = createSortSql(c);
}
else
{
if(c.key == "c" || c.key == "contains")
{
isContentSearch = true;
}
auto sql = createSql(c);
whereSql += sql.first;
bindValues.append(sql.second);
}
}
return result;
QString prepSql;
if(isContentSearch)
{
prepSql = "SELECT file.path AS path, content.page AS page, file.mtime AS mtime, file.size AS size, file.filetype AS filetype FROM file INNER JOIN content ON file.id = content.fileid WHERE 1=1 AND " + whereSql + " " + sortSql;
}
else
{
prepSql = "SELECT file.path AS path, 0 as page, file.mtime AS mtime, file.size AS size, file.filetype AS filetype FROM file WHERE 1=1 AND " + whereSql + " " + sortSql;
}
QSqlQuery dbquery(*db);
dbquery.prepare(prepSql);
for(const QString &value : bindValues)
{
if(value != "")
{
dbquery.addBindValue(value);
}
}
return dbquery;
}
QVector<SearchResult> SqliteSearch::search(const QString &query)
{
QVector<SearchResult> results;
QString whereSql = makeSql(tokenize(query));
QString prep;
//TODO: hack, as we don't wanna look into content and get redundant results, when we don't even care about content
if(whereSql.contains("content."))
{
prep = "SELECT file.path AS path, content.page AS page, file.mtime AS mtime, file.size AS size, file.filetype AS filetype FROM file INNER JOIN content ON file.id = content.fileid WHERE 1=1 AND " + whereSql + " ORDER By file.mtime DESC, content.page ASC";
}
else
{
prep = "SELECT file.path AS path, 0 as page, file.mtime AS mtime, file.size AS size, file.filetype AS filetype FROM file WHERE " + whereSql + " ORDER by file.mtime DESC";
}
QSqlQuery dbquery(*db);
dbquery.prepare(prep);
bool success = dbquery.exec();
QSqlQuery dbQuery = makeSqlQuery(tokenize(query));
bool success = dbQuery.exec();
if(!success)
{
qDebug() << "prepped: " << prep;
qDebug() << dbquery.lastError();
throw QSSGeneralException("SQL Error: " + dbquery.lastError().text());
qDebug() << dbQuery.lastError();
throw QSSGeneralException("SQL Error: " + dbQuery.lastError().text());
}
while(dbquery.next())
while(dbQuery.next())
{
SearchResult result;
result.fileData.absPath = dbquery.value("path").toString();
result.fileData.mtime = dbquery.value("mtime").toUInt();
result.fileData.size = dbquery.value("size").toUInt();
result.fileData.filetype = dbquery.value("filetype").toChar();
result.page = dbquery.value("page").toUInt();
result.fileData.absPath = dbQuery.value("path").toString();
result.fileData.mtime = dbQuery.value("mtime").toUInt();
result.fileData.size = dbQuery.value("size").toUInt();
result.fileData.filetype = dbQuery.value("filetype").toChar();
result.page = dbQuery.value("page").toUInt();
results.append(result);
}
return results;

18
shared/sqlitesearch.h
View File

@ -1,6 +1,7 @@
#ifndef SQLITESEARCH_H
#define SQLITESEARCH_H
#include <QSqlDatabase>
#include <QPair>
#include "searchresult.h"
class SqliteSearch
@ -19,18 +20,21 @@ class SqliteSearch
};
private:
QSqlDatabase *db;
QVector<SqliteSearch::Token> tokenize(QString expression);
QString createSql(const Token &token);
QString makeSql(const QVector<Token> &tokens);
bool checkParanthesis(QString expression);
public:
SqliteSearch(QSqlDatabase &db);
QVector<SearchResult> search(const QString &query);
static bool checkParanthesis(QString expression);
private:
QSqlDatabase *db;
QVector<Token> tokenize(QString expression);
QSqlQuery makeSqlQuery(const QVector<Token> &tokens);
QString fieldToColumn(QString col);
QPair<QString, QVector<QString> > createSql(const Token &token);
QString createSortSql(const SqliteSearch::Token &token);
};
#endif // SQLITESEARCH_H