shared: indexer: Add globbed pattern to ignore list

We added the wrong var previously... interestingly didn't matter.

CHANGELOG.md

@@ -1,4 +1,49 @@
 # looqs: Release notes
+## 2024-05-xx - v0.10
+CHANGES:
+ - Move to Qt6, drop Qt5 support.
+ - Index ToC of PDFs
+ - ToC can be searched with filter: toc:(query). (Basic, more to come).
+ - sqlite: Improvements so rare "database locked" errors don't occur.
+ - Minor fixes
+ - Add packages: Ubuntu 23.10.
+ - Remove packages: Ubuntu 22.10
+
+## 2023-05-07 - v0.9
+Highlights: Tag support. Also begin new index mode to only index metadata (currently only path + file size, more to come).
+
+Note: Upgrading can take some time as new column indexes will be added
+
+CHANGES:
+
+ - gui: Improve font rendering in previews
+ - gui: Allow indexing only metadata
+ - gui: Allow adding content for files which only had metadata indexed before
+ - gui: Allow assigning tags by right clicking on paths
+ - cli: "add" command: Implement --verbose (-v)
+ - cli: "add" command: Implement --no-content and --fill-content
+ - cli: Add "tag" command which allows managing tags for paths.
+ - search: Add "tag:()", "t:()" filters
+ - Minor improvements and refactorings under the hood
+ - Add packages: Ubuntu 23.04.
+
+
+## 2022-11-19 - v0.8.1
+
+CHANGES:
+ - Fix regression causing previews in second (and higher) result page to not render
+ - Minor improvements
+
+## 2022-10-22 - v0.8
+
+CHANGES:
+ - For new, not previously indexed files, start creating an additional index using sqlite's experimental trigram tokenizer. Thanks to that, we can now match substrings >= 3 of an unicode sequence. Results of the usual index are prioritized.
+ - GUI: Ensure order of previews matches ranking exactly. Previously, it depended simply on the time preview generators took, i. e. it was more or less a race.
+ - Report progress more often during indexing, so users don't get the impression that it's stuck when processing dirs with large documents.
+ - Fix a regression that caused phrase queries to be broken
+ - Minor improvements
+ - Add packages: Ubuntu 22.10.
+
 ## 2022-09-10 - v0.7
 
 CHANGES:

COPYING

@@ -0,0 +1,681 @@
+This file lists looqs license and the license of third-party libraries.
+
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+Copyright (c) 2018-2024: Albert Schwarzkopf <looqs at quitesimple period org>
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+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    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 3 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, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

HACKING.md

@@ -1,12 +1,7 @@
 # looqs - Hacking
 
 ## Introduction
-Without elaborating here, I hacked looqs because I was not satisfied with the state of desktop search on Linux.
-
-Originally a set of CLI python  scripts, it is now written in C++ and offers a GUI made using Qt. While a "web app" would have been an option, I prefer a desktop application for something like looqs. I chose Qt because I am more familiar with it than with any other GUI framework. To my knowledge, potential alternatives like GTK do not include as many "batteries" as Qt anyway, so the job presumably would have been harder there,
-at least for me.
-
-If you are interested in how to contribute, please see the file [CONTRIBUTING.md](CONTRIBUTING.md) which contains the instructions on how to submit patches etc.
+If you are interested on how to contribute, please see the file [CONTRIBUTING.md](CONTRIBUTING.md) which contains the instructions on how to submit patches etc.
 
 ## Security
 The architecture ensures that the parsing of documents and the preview generation is sandboxed by [exile.h](https://github.com/quitesimpleorg/exile.h). looqs uses a multi-process architecture to achieve this.
@@ -16,7 +11,8 @@ Qt code is considered trusted in this model. While one may critize this, it was
 Set the enviornment variable `LOOQS_DISABLE_SANDBOX=1` to disable sandboxing. It's intended for troublehshooting.
 
 ## Database
-The heart is sqlite, with the FTS5 extensions behind the full-text search. While FTS may not be sqlite's strong suit, I definitly did not want to run one of those oftenly recommended heavy (Java based) solutions. I explored other options like Postgresql, I've discard them due to some limitations back then.
+The heart is sqlite, with the FTS5 extensions behind the full-text search. While FTS may not be sqlite's strong suit, I definitely did not want to run one of those oftenly recommended heavy (Java based) solutions. I explored other options like Postgresql, I've discard them due to some limitations back then. It's also natural to use sqlite as it's
+used for metadata in general.
 
 Down the road, alternatives will be explored of course if sqlite should not suffice anymore.
 
@@ -27,7 +23,7 @@ looqs simply strips the tags and that seems to work fine so far. Naturally, this
 Naturally, looqs won't be able to index and render previews for everything. Such approach would create a huge bloated binary. In the future, there will be some plugin system of some sorts, either we will load .so objects or use subprocesses.
 
 ## Name
-looqs looks for files. You as the user can also look inside them. The 'k' in "looks" was replaced by a 'q'. Originally, I wanted my projects to have "qs" (for quitesimple) in their name. While abandoned now, this got us to looqs.
+looqs looks for files. You as the user can also look inside them. The 'k' in "looks" was replaced by a 'q'. Originally, I wanted my projects to have "qs" (for quitesimple) in their name. While that quirk is abandoned now, this got us to looqs.
 
 
 

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2018-2022: Albert Schwarzkopf <looqs at quitesimple period org>
+Copyright (c) 2018-2023: Albert Schwarzkopf <looqs at quitesimple period org>
 
 looqs is made available under the following license: 
 

README.md

@@ -28,9 +28,12 @@ There is no need to write the long form of filters. There are also booleans avai
 The screenshots in this section may occasionally be slightly outdated, but they are usually recent enough to get an overall impression of the current state of the GUI.
 
 ## Current status
-Latest version: 2022-09-10, v0.7
+Latest version: 2023-05-07, v0.9
 
-Please see [Changelog](CHANGELOG.md) for a human readable list of changes.
+Please keep in mind: looqs is still at an early stage and may exhibit some weirdness and contain bugs.
+
+Please see [Changelog](CHANGELOG.md) for a human readable list of changes. For download instructions, see
+further down this document.
 
 
 ## Goals and principles
@@ -73,7 +76,7 @@ To build on Ubuntu and Debian, clone the repo and then run:
 ```
 git submodule init
 git submodule update
-sudo apt install build-essential qtbase5-dev libpoppler-qt5-dev libuchardet-dev libquazip5-dev
+sudo apt install build-essential qtbase5-dev libqt5sql5-sqlite libpoppler-qt5-dev libuchardet-dev libquazip5-dev
 qmake
 make
 ```
@@ -94,7 +97,9 @@ The GUI is located in `gui/looqs-gui`, the binary for the CLI is in `cli/looqs`
 ## Packages
 At this point, looqs is not in any official distro package repo, but I maintain some packages.
 
-### Ubuntu 22.04
+
+
+### Ubuntu 23.04, 22.10, 22.04
 Latest release can be installed using apt from the repo.
 ```
 # First, obtain key, assume it's trusted.
@@ -105,6 +110,8 @@ echo "deb [arch=amd64 signed-by=/usr/share/keyrings/repo.quitesimple.org.gpg] ht
 sudo apt-get update
 sudo apt-get install looqs
 ```
+### Gentoo (EXPERIMENTAL)
+Available in this overlay: https://github.com/quitesimpleorg/quitesimple-overlay
 
 ### Prebuilt tarball (distro-agnostic) (EXPERIMENTAL)
 looqs is also distributed as a tarball containing prebuilt binaries and its library dependencies. The tarball is
@@ -131,7 +138,7 @@ An AppImage may accompany the tarball in the future.
 
 
 ### Other distros
-I'll probably add a package for voidlinux at some point and maybe will provide a Gentoo ebuild. However, I would appreciate help for others distros. If you create a package, let me know!
+I appreciate help for others distros. If you create a package, let me know!
 
 
 ### Signature verification

USAGE.md

@@ -165,6 +165,8 @@ A number of search filters are available.
 | path.begins:(term) | pb:(term) |  Filters path beginning with the specified term |
 | contains:(terms) | c:(terms) | Full-text search, also understands quotes |
 | limit:(integer) | - | Limits the number of results. The default is 1000. Say "limit:0" to see all results |
+| tag:(tagname) | t:(tagname) | Filter for files that have been tagged with the corresponding tag |
+
 Filters can be combined. The booleans AND and OR are supported. Negations can be applied too, except for c:(). Negations are specified with "!".
 The AND boolean is implicit and thus entering it strictly optional.
 
@@ -177,11 +179,5 @@ Examples:
 |p:(notes) (pe:(odt) OR pe:(docx))          |Finds files such as notes.docx, notes.odt but also any .docs and .odt when the path contains the string 'notes'|
 |memcpy !(pe:(.c) OR pe:(.cpp))| Performs a FTS search for 'memcpy' but excludes .cpp and .c files.|
 |c:("I think, therefore")|Performs a FTS search for the phrase "I think, therefore".|
-|c:("invoice") Downloads|This query is equivalent to c:("invoice") p:("Downloads")|
-
-
-
-
-
-
-
+|c:("invoice") Downloads|Equivalent to c:("invoice") p:("Downloads")|
+|p:(Downloads) invoice|Equivalent to c:("invoice") p:("Downloads")|

cli/cli.pro

@@ -15,6 +15,7 @@ DEFINES += QT_DEPRECATED_WARNINGS
 # You can also select to disable deprecated APIs only up to a certain version of Qt.
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 SOURCES += \
+    commandtag.cpp \
         main.cpp \
     commandadd.cpp \
     commanddelete.cpp \
@@ -27,6 +28,7 @@ HEADERS += \
     command.h \
     commandadd.h \
     commanddelete.h \
+    commandtag.h \
     commandupdate.h \
     commandsearch.h \
     commandlist.h
@@ -35,15 +37,16 @@ win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../shared/release/ -ls
 else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../shared/debug/ -lshared
 else:unix: LIBS += -L$$OUT_PWD/../shared/ -lshared
 
-LIBS += -luchardet -lpoppler-qt5 -lquazip5
+LIBS += -luchardet -lpoppler-qt6
 
-packagesExist(quazip1-qt5) {
-	PKGCONFIG += quazip1-qt5
+packagesExist(quazip1-qt6) {
+	PKGCONFIG += quazip1-qt6
 	CONFIG += link_pkgconfig
-	LIBS -= -lquazip5
 }
 
 INCLUDEPATH += $$PWD/../shared
+INCLUDEPATH += /usr/include/poppler/qt6/
+
 DEPENDPATH += $$PWD/../shared
 
 win32-g++:CONFIG(release, debug|release): PRE_TARGETDEPS += $$OUT_PWD/../shared/release/libshared.a

cli/command.cpp

@@ -2,7 +2,6 @@
 #include <QThread>
 #include <QDebug>
 #include "command.h"
-#include "looqsgeneralexception.h"
 
 void Command::execute()
 {

cli/commandadd.cpp

@@ -23,7 +23,7 @@ void CommandAdd::indexerFinished()
 	if(failedPathsCount > 0)
 	{
 		Logger::info() << "Failed paths: " << Qt::endl;
-		for(QString paths : result.failedPaths())
+		for(const QString &paths : result.failedPaths())
 		{
 			Logger::info() << paths << Qt::endl;
 		}
@@ -41,23 +41,36 @@ int CommandAdd::handle(QStringList arguments)
 {
 	QCommandLineParser parser;
 	parser.addOptions({{{"c", "continue"},
-						"Continue adding files, don't exit on first error. If this option is not given, looqs will "
-						"exit asap, but it's possible that a few files will still be processed. "
+						"Continue adding files, don't exit on first error. Exit code will be 0. If this option is not "
+						"given, looqs will "
+						"exit asap, but it's possible that a few files will still be processed."
 						"Set -t 1 to avoid this behavior, but processing will be slower. "},
+					   {{"n", "no-content"}, "Only add paths to database. Do not index content"},
+					   {{"v", "verbose"}, "Print paths of files being processed"},
+					   {{"f", "fill-content"}, "Index content for files previously indexed with -n"},
 					   {{"t", "threads"}, "Number of threads to use.", "threads"}});
-
 	parser.addHelpOption();
 	parser.addPositionalArgument("add", "Add paths to the index",
 								 "add [paths...]. If no path is given, read from stdin, one path per line.");
 
 	parser.process(arguments);
 	this->keepGoing = parser.isSet("continue");
+	bool pathsOnly = parser.isSet("no-content");
+	bool fillContent = parser.isSet("fill-content");
+	bool verbose = parser.isSet("verbose");
+
 	if(parser.isSet("threads"))
 	{
 		QString threadsCount = parser.value("threads");
 		QThreadPool::globalInstance()->setMaxThreadCount(threadsCount.toInt());
 	}
 
+	if(pathsOnly && fillContent)
+	{
+		Logger::error() << "Invalid options: -n and -f cannot both be set";
+		return EXIT_FAILURE;
+	}
+
 	QStringList files = parser.positionalArguments();
 
 	if(files.length() == 0)
@@ -71,15 +84,47 @@ int CommandAdd::handle(QStringList arguments)
 		}
 	}
 
+	FileSaverOptions fileSaverOptions;
+	fileSaverOptions.keepGoing = keepGoing;
+	fileSaverOptions.fillExistingContentless = fillContent;
+	fileSaverOptions.metadataOnly = pathsOnly;
+	fileSaverOptions.verbose = verbose;
+
 	indexer = new Indexer(*this->dbService);
+	indexer->setFileSaverOptions(fileSaverOptions);
+
 	indexer->setTargetPaths(files.toVector());
-	indexer->setKeepGoing(keepGoing);
+
+	if(verbose)
+	{
+		indexer->setProgressReportThreshold(1);
+	}
 
 	connect(indexer, &Indexer::pathsCountChanged, this,
 			[](int pathsCount) { Logger::info() << "Found paths: " << pathsCount << Qt::endl; });
 	connect(indexer, &Indexer::indexProgress, this,
-			[](int pathsCount, unsigned int added, unsigned int skipped, unsigned int failed, unsigned int totalCount)
-			{ Logger::info() << "Processed files: " << pathsCount << Qt::endl; });
+			[verbose, this](int pathsCount, unsigned int /*added*/, unsigned int /*skipped*/, unsigned int /*failed*/,
+							unsigned int /*totalCount*/)
+			{
+				Logger::info() << "Processed files: " << pathsCount << Qt::endl;
+				if(verbose)
+				{
+					IndexResult indexResult = indexer->getResult();
+					int newlyAdded = indexResult.results.count() - currentResult.results.count();
+					if(newlyAdded > 0)
+					{
+						int newOffset = indexResult.results.count() - newlyAdded;
+						for(int i = newOffset; i < indexResult.results.count(); i++)
+						{
+							auto result = indexResult.results.at(i);
+							Logger::info() << SaveFileResultToString(result.second) << result.first << Qt::endl;
+						}
+					}
+					this->currentResult = indexResult;
+				}
+			}
+
+	);
 	connect(indexer, &Indexer::finished, this, &CommandAdd::indexerFinished);
 
 	this->autoFinish = false;

cli/commandadd.h

@@ -13,6 +13,8 @@ class CommandAdd : public Command
 	bool keepGoing = true;
 
   protected:
+	IndexResult currentResult;
+
   public:
 	using Command::Command;
 

cli/commandlist.cpp

@@ -1,6 +1,5 @@
 #include <QCommandLineParser>
 #include "commandlist.h"
-#include "databasefactory.h"
 #include "logger.h"
 
 int CommandList::handle(QStringList arguments)

cli/commandsearch.cpp

@@ -1,6 +1,5 @@
 #include <QCommandLineParser>
 #include "commandsearch.h"
-#include "databasefactory.h"
 #include "logger.h"
 
 int CommandSearch::handle(QStringList arguments)

cli/commandtag.cpp

@@ -0,0 +1,153 @@
+#include <QCommandLineParser>
+#include "commandtag.h"
+#include "logger.h"
+#include "tagmanager.h"
+
+bool CommandTag::ensureAbsolutePaths(const QVector<QString> &paths, QVector<QString> &absolutePaths)
+{
+	for(const QString &path : paths)
+	{
+		QFileInfo info{path};
+		if(!info.exists())
+		{
+			Logger::error() << "Can't add tag for file  " + info.absoluteFilePath() + " because it does not exist"
+							<< Qt::endl;
+			return false;
+		}
+		QString absolutePath = info.absoluteFilePath();
+		if(!this->dbService->fileExistsInDatabase(absolutePath))
+		{
+			Logger::error() << "Only files that have been indexed can be tagged. File not in index: " + absolutePath
+							<< Qt::endl;
+			return false;
+		}
+		absolutePaths.append(absolutePath);
+	}
+	return true;
+}
+
+int CommandTag::handle(QStringList arguments)
+{
+	QCommandLineParser parser;
+	parser.addPositionalArgument("add", "Adds a tag to a file",
+								 "add [tag] [paths...]. Adds the tag to the specified paths");
+	parser.addPositionalArgument("remove", "Removes a path associated to a tag", "remove [tag] [path]");
+	parser.addPositionalArgument("delete", "Deletes a tag", "delete [tag]");
+	parser.addPositionalArgument("list", "Lists paths associated with a tag, or all tags", "list [tag]");
+	parser.addPositionalArgument("show", "Lists tags associated with a path", "show [path]");
+
+	parser.addHelpOption();
+
+	parser.parse(arguments);
+
+	QStringList args = parser.positionalArguments();
+	if(args.length() == 0)
+	{
+		parser.showHelp(EXIT_FAILURE);
+		return EXIT_FAILURE;
+	}
+	TagManager tagManager{*this->dbService};
+	QString cmd = args[0];
+	if(cmd == "add")
+	{
+		if(args.length() < 3)
+		{
+			Logger::error() << "Not enough arguments provided. 'add' requires a tag followed by at least one path"
+							<< Qt::endl;
+			return EXIT_FAILURE;
+		}
+		QString tag = args[1];
+		QVector<QString> paths = args.mid(2).toVector();
+
+		QVector<QString> absolutePaths;
+		if(!ensureAbsolutePaths(paths, absolutePaths))
+		{
+			return EXIT_FAILURE;
+		}
+		bool result = tagManager.addPathsToTag(tag, absolutePaths);
+		if(!result)
+		{
+			Logger::error() << "Failed to assign tags" << Qt::endl;
+			return EXIT_FAILURE;
+		}
+		return EXIT_SUCCESS;
+	}
+	if(cmd == "list")
+	{
+
+		QString tag;
+		if(args.length() >= 2)
+		{
+			tag = args[1];
+		}
+		QVector<QString> entries;
+		if(tag.isEmpty())
+		{
+			entries = tagManager.getTags();
+		}
+		else
+		{
+			entries = tagManager.getPaths(tag);
+		}
+		for(const QString &entry : entries)
+		{
+			Logger::info() << entry << Qt::endl;
+		}
+	}
+	if(cmd == "remove")
+	{
+		if(args.length() < 3)
+		{
+			Logger::error() << "Not enough arguments provided. 'remove' requires a tag followed by at least one path"
+							<< Qt::endl;
+			return EXIT_FAILURE;
+		}
+		QString tag = args[1];
+		QVector<QString> paths = args.mid(2).toVector();
+
+		QVector<QString> absolutePaths;
+		if(!ensureAbsolutePaths(paths, absolutePaths))
+		{
+			return EXIT_FAILURE;
+		}
+
+		if(!tagManager.removePathsForTag(tag, absolutePaths))
+		{
+			Logger::error() << "Failed to remove path assignments" << Qt::endl;
+			return EXIT_FAILURE;
+		}
+	}
+	if(cmd == "delete")
+	{
+		if(args.length() != 2)
+		{
+			Logger::error() << "The 'delete' command requires the tag to delete" << Qt::endl;
+			return EXIT_FAILURE;
+		}
+		if(!tagManager.deleteTag(args[1]))
+		{
+			Logger::error() << "Failed to delete tag" << Qt::endl;
+			return EXIT_FAILURE;
+		}
+	}
+	if(cmd == "show")
+	{
+		if(args.length() != 2)
+		{
+			Logger::error() << "The 'show' command requires a path to show the assigned tags" << Qt::endl;
+			return EXIT_FAILURE;
+		}
+		QString path = args[1];
+		QVector<QString> absolutePaths;
+		if(!ensureAbsolutePaths({path}, absolutePaths))
+		{
+			return EXIT_FAILURE;
+		}
+		QVector<QString> tags = tagManager.getTags(absolutePaths.at(0));
+		for(const QString &entry : tags)
+		{
+			Logger::info() << entry << Qt::endl;
+		}
+	}
+	return EXIT_SUCCESS;
+}

cli/commandtag.h

@@ -0,0 +1,16 @@
+#ifndef COMMANDTAG_H
+#define COMMANDTAG_H
+#include "command.h"
+
+class CommandTag : public Command
+{
+  protected:
+	bool ensureAbsolutePaths(const QVector<QString> &paths, QVector<QString> &absolutePaths);
+
+  public:
+	using Command::Command;
+
+	int handle(QStringList arguments) override;
+};
+
+#endif // COMMANDTAG_H

cli/commandupdate.cpp

@@ -38,10 +38,13 @@ int CommandUpdate::handle(QStringList arguments)
 		QThreadPool::globalInstance()->setMaxThreadCount(threadsCount.toInt());
 	}
 
-	bool hasErrors = false;
 	IndexSyncer *syncer = new IndexSyncer(*this->dbService);
-	syncer->setKeepGoing(keepGoing);
-	syncer->setVerbose(verbose);
+
+	FileSaverOptions fileOptions;
+	fileOptions.keepGoing = keepGoing;
+	fileOptions.verbose = verbose;
+
+	syncer->setFileSaverOptions(fileOptions);
 	syncer->setPattern(pattern);
 	syncer->setDryRun(dryRun);
 	syncer->setRemoveDeletedFromIndex(deleteMissing);
@@ -60,7 +63,7 @@ int CommandUpdate::handle(QStringList arguments)
 		/* TODO: updated not printed, handled be verbose in FileSaver, but this can be improved */
 	}
 	connect(syncer, &IndexSyncer::finished, this,
-			[&](unsigned int totalUpdated, unsigned int totalRemoved, unsigned int totalErrors)
+			[this, dryRun, keepGoing](unsigned int totalUpdated, unsigned int totalRemoved, unsigned int totalErrors)
 			{
 				Logger::info() << "Syncing finished" << Qt::endl;
 
@@ -72,7 +75,7 @@ int CommandUpdate::handle(QStringList arguments)
 				}
 
 				int retval = 0;
-				if(hasErrors && !keepGoing)
+				if(this->hasErrors && !keepGoing)
 				{
 					retval = 1;
 				}
@@ -82,7 +85,7 @@ int CommandUpdate::handle(QStringList arguments)
 			[&](QString error)
 			{
 				Logger::error() << error << Qt::endl;
-				hasErrors = true;
+				this->hasErrors = true;
 			});
 
 	this->autoFinish = false;

cli/commandupdate.h

@@ -4,6 +4,9 @@
 #include "filesaver.h"
 class CommandUpdate : public Command
 {
+  protected:
+	bool hasErrors = false;
+
   public:
 	using Command::Command;
 	int handle(QStringList arguments) override;

cli/main.cpp

@@ -21,6 +21,7 @@
 #include "commandupdate.h"
 #include "commandsearch.h"
 #include "commandlist.h"
+#include "commandtag.h"
 #include "databasefactory.h"
 #include "logger.h"
 #include "sandboxedprocessor.h"
@@ -31,7 +32,7 @@
 void printUsage(QString argv0)
 {
 	qInfo() << "Usage:" << argv0 << "command";
-	qInfo() << "Valid commands: add, update, delete, search, list. Each command has a --help option.";
+	qInfo() << "Valid commands: add, update, search, delete, tag, list. Each command has a --help option.";
 }
 
 Command *commandFromName(QString name, SqliteDbService &dbService)
@@ -56,6 +57,10 @@ Command *commandFromName(QString name, SqliteDbService &dbService)
 	{
 		return new CommandList(dbService);
 	}
+	if(name == "tag")
+	{
+		return new CommandTag(dbService);
+	}
 
 	return nullptr;
 }

gui/aboutdialog.cpp

@@ -19,7 +19,6 @@ AboutDialog::AboutDialog(QWidget *parent) : QDialog(parent)
 	closeButton->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
 	connect(closeButton, &QPushButton::clicked, this, &QDialog::close);
 
-	closeLayout->setMargin(10);
 	closeLayout->addStretch(10);
 	closeLayout->addWidget(closeButton);
 
@@ -32,7 +31,7 @@ AboutDialog::AboutDialog(QWidget *parent) : QDialog(parent)
 	QLabel *aboutLooqs = new QLabel(this);
 	QString html = "<h2>looqs</h2>";
 	html += "Full-text search with previews for your files<br><br>";
-	html += "Copyright (c) 2018-2022: Albert Schwarzkopf<br><br>";
+	html += "Copyright (c) 2018-2024: Albert Schwarzkopf<br><br>";
 	html += QString("Version: %1<br><br>").arg(Common::versionText());
 	html += "Contact: looqs at quitesimple dot org<br><br>";
 	html += "Website: <a href=\"https://quitesimple.org\">https://quitesimple.org</a><br><br>";

gui/gui.pro

@@ -34,6 +34,7 @@ SOURCES += \
         main.cpp \
         mainwindow.cpp \
       clicklabel.cpp \
+    previewcoordinator.cpp \
     previewgenerator.cpp \
     previewgeneratormapfunctor.cpp \
     previewgeneratorodt.cpp \
@@ -54,6 +55,7 @@ HEADERS += \
     ipcserver.h \
         mainwindow.h \
     clicklabel.h \
+    previewcoordinator.h \
     previewgenerator.h \
     previewgeneratormapfunctor.h \
     previewgeneratorodt.h \
@@ -69,8 +71,8 @@ HEADERS += \
 FORMS += \
         mainwindow.ui
 
-INCLUDEPATH += /usr/include/poppler/qt5/
-INCLUDEPATH += /usr/include/quazip5
+INCLUDEPATH += /usr/include/poppler/qt6/
+INCLUDEPATH += /usr/include/quazip6
 
 QT += widgets sql
 
@@ -78,12 +80,12 @@ win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../shared/release/ -ls
 else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../shared/debug/ -lshared
 else:unix: LIBS += -L$$OUT_PWD/../shared/ -lshared
 
-LIBS += -luchardet -lpoppler-qt5 -lquazip5
+LIBS += -luchardet -lpoppler-qt6 -lquazip6
 
-packagesExist(quazip1-qt5) {
-	PKGCONFIG += quazip1-qt5
+packagesExist(quazip1-qt6) {
+	PKGCONFIG += quazip1-qt6
 	CONFIG += link_pkgconfig
-	LIBS -= -lquazip5
+	LIBS -= -lquazip6
 }
 
 INCLUDEPATH += $$PWD/../shared

gui/ipcpreviewclient.cpp

@@ -68,22 +68,25 @@ void IPCPreviewClient::start(RenderConfig config, const QVector<RenderTarget> &t
 	if(socket->isOpen() && socket->isWritable())
 	{
 		QDataStream stream(socket);
+		stream.startTransaction();
 		stream << GeneratePreviews;
 		stream << config;
 		stream << targets;
+		stream.commitTransaction();
 		socket->flush();
 
-		int numTarget = 0;
+		qsizetype numTarget = 0;
 		if(socket->isOpen() && socket->isReadable() && socket->state() == QLocalSocket::ConnectedState)
 		{
 			do
 			{
-				socket->waitForReadyRead(100);
+				socket->waitForReadyRead(5000);
 				stream.startTransaction();
 				stream >> numTarget;
 			} while(!stream.commitTransaction() && socket->state() == QLocalSocket::ConnectedState);
 			if(numTarget != targets.count())
 			{
+				qDebug() << "Target count mismatch";
 				emit error("IPC Error: Server reports less targets than it should");
 				return;
 			}

gui/ipcserver.cpp

@@ -51,7 +51,9 @@ void IpcServer::spawnerNewConnection()
 			} while(!stream.commitTransaction() && socket->state() == QLocalSocket::ConnectedState);
 			if(socket->state() == QLocalSocket::ConnectedState)
 			{
+				stream.startTransaction();
 				stream << targets.count();
+				stream.commitTransaction();
 				socket->flush();
 				IPCPreviewWorker *previewWorker = new IPCPreviewWorker(socket);
 				connect(previewWorker, &IPCPreviewWorker::finished, this, [previewWorker] { delete previewWorker; });
@@ -59,6 +61,7 @@ void IpcServer::spawnerNewConnection()
 			}
 			else
 			{
+				qDebug() << "Deleting socket...";
 				delete socket;
 			}
 		}

gui/main.cpp

@@ -28,7 +28,7 @@ void enableIpcSandbox()
 	policy->namespace_options = EXILE_UNSHARE_USER | EXILE_UNSHARE_MOUNT | EXILE_UNSHARE_NETWORK;
 	policy->no_new_privs = 1;
 	policy->drop_caps = 1;
-	policy->vow_promises = exile_vows_from_str("thread cpath rpath unix stdio proc error");
+	policy->vow_promises = exile_vows_from_str("thread cpath rpath wpath unix stdio proc error");
 	policy->mount_path_policies_to_chroot = 1;
 
 	QString ipcSocketPath = Common::ipcSocketPath();
@@ -193,7 +193,7 @@ int main(int argc, char *argv[])
 															   Logger::error() << error << Qt::endl;
 															   QMessageBox::critical(nullptr, "Error during upgrade",
 																					 error);
-															   qApp->quit();
+															   exit(EXIT_FAILURE);
 														   }
 
 								 );

gui/mainwindow.cpp

@@ -1,4 +1,4 @@
-#include <poppler-qt5.h>
+#include <poppler-qt6.h>
 #include <QLabel>
 #include <QtDebug>
 #include <QFileInfo>
@@ -15,15 +15,14 @@
 #include <QFileDialog>
 #include <QScreen>
 #include <QProgressDialog>
-#include <QDesktopWidget>
+#include <QWidgetAction>
+#include <QInputDialog>
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "clicklabel.h"
 #include "../shared/sqlitesearch.h"
 #include "../shared/looqsgeneralexception.h"
 #include "../shared/common.h"
-#include "ipcpreviewclient.h"
-#include "previewgenerator.h"
 #include "aboutdialog.h"
 
 MainWindow::MainWindow(QWidget *parent, QString socketPath)
@@ -32,8 +31,7 @@ MainWindow::MainWindow(QWidget *parent, QString socketPath)
 	this->progressDialog.cancel(); // because constructing it shows it, quite weird
 	ui->setupUi(this);
 	setWindowTitle(QCoreApplication::applicationName());
-	this->ipcPreviewClient.moveToThread(&this->ipcClientThread);
-	this->ipcPreviewClient.setSocketPath(socketPath);
+
 	QSettings settings;
 
 	this->dbFactory = new DatabaseFactory(Common::databasePath());
@@ -45,6 +43,9 @@ MainWindow::MainWindow(QWidget *parent, QString socketPath)
 
 	indexer = new Indexer(*(this->dbService));
 	indexer->setParent(this);
+
+	tagManager = new TagManager(*(this->dbService));
+
 	connectSignals();
 	ui->treeResultsList->setContextMenuPolicy(Qt::ContextMenuPolicy::CustomContextMenu);
 	ui->tabWidget->setCurrentIndex(0);
@@ -78,7 +79,7 @@ MainWindow::MainWindow(QWidget *parent, QString socketPath)
 	ui->txtSearch->installEventFilter(this);
 	ui->scrollArea->viewport()->installEventFilter(this);
 
-	this->ipcClientThread.start();
+	this->previewCoordinator.setSocketPath(socketPath);
 }
 
 void MainWindow::addPathToIndex()
@@ -150,7 +151,7 @@ void MainWindow::connectSignals()
 	connect(this->indexer, &Indexer::finished, this, &MainWindow::finishIndexing);
 
 	connect(ui->lstPaths->selectionModel(), &QItemSelectionModel::selectionChanged, this,
-			[&](const QItemSelection &selected, const QItemSelection &deselected)
+			[&](const QItemSelection & /*selected*/, const QItemSelection & /*deselected*/)
 			{ ui->btnDeletePath->setEnabled(this->ui->lstPaths->selectedItems().count() > 0); });
 
 	connect(ui->btnDeletePath, &QPushButton::clicked, this, [&] { qDeleteAll(ui->lstPaths->selectedItems()); });
@@ -170,30 +171,29 @@ void MainWindow::connectSignals()
 				}
 			});
 	connect(ui->menuAboutAction, &QAction::triggered, this,
-			[this](bool checked)
+			[this](bool /*checked*/)
 			{
 				AboutDialog aboutDialog(this);
 
 				aboutDialog.exec();
 			});
 	connect(ui->menuAboutQtAction, &QAction::triggered, this,
-			[this](bool checked) { QMessageBox::aboutQt(this, "About Qt"); });
+			[this](bool /*checked*/) { QMessageBox::aboutQt(this, "About Qt"); });
 	connect(ui->menuSyncIndexAction, &QAction::triggered, this, &MainWindow::startIndexSync);
 	connect(ui->menuOpenUserManualAction, &QAction::triggered, this,
-			[this]() { QDesktopServices::openUrl(Common::userManualUrl()); });
+			[]() { QDesktopServices::openUrl(Common::userManualUrl()); });
 
-	connect(indexSyncer, &IndexSyncer::finished, this,
-			[&](unsigned int totalUpdated, unsigned int totalDeleted, unsigned int totalErrored)
-			{
-				this->progressDialog.cancel();
+	connect(
+		indexSyncer, &IndexSyncer::finished, this,
+		[&](unsigned int totalUpdated, unsigned int totalDeleted, unsigned int totalErrored)
+		{
+			this->progressDialog.cancel();
 
-				QMessageBox::information(
-					this, "Syncing finished",
-					QString("Syncing finished\n\nTotal updated: %1\nTotal deleted: %2\nTotal errors: %3\n")
-						.arg(QString::number(totalUpdated))
-						.arg(QString::number(totalDeleted))
-						.arg(QString::number(totalErrored)));
-			});
+			QMessageBox::information(
+				this, "Syncing finished",
+				QString("Syncing finished\n\nTotal updated: %1\nTotal deleted: %2\nTotal errors: %3\n")
+					.arg(QString::number(totalUpdated), QString::number(totalDeleted), QString::number(totalErrored)));
+		});
 	connect(this, &MainWindow::beginIndexSync, indexSyncer, &IndexSyncer::sync);
 	connect(&this->progressDialog, &QProgressDialog::canceled, indexSyncer, &IndexSyncer::cancel);
 	connect(ui->btnSaveSettings, &QPushButton::clicked, this, &MainWindow::saveSettings);
@@ -208,9 +208,9 @@ void MainWindow::connectSignals()
 			}
 		},
 		Qt::QueuedConnection);
-	connect(&ipcPreviewClient, &IPCPreviewClient::previewReceived, this, &MainWindow::previewReceived,
+	connect(&previewCoordinator, &PreviewCoordinator::previewReady, this, &MainWindow::previewReceived,
 			Qt::QueuedConnection);
-	connect(&ipcPreviewClient, &IPCPreviewClient::finished, this,
+	connect(&previewCoordinator, &PreviewCoordinator::completedGeneration, this,
 			[&]
 			{
 				this->ui->previewProcessBar->setValue(this->ui->previewProcessBar->maximum());
@@ -218,22 +218,24 @@ void MainWindow::connectSignals()
 				this->ui->comboPreviewFiles->setEnabled(true);
 				ui->txtSearch->setEnabled(true);
 			});
-	connect(&ipcPreviewClient, &IPCPreviewClient::error, this,
+	connect(&previewCoordinator, &PreviewCoordinator::error, this,
 			[this](QString msg)
 			{
 				qCritical() << msg << Qt::endl;
 				QMessageBox::critical(this, "IPC error", msg);
 			});
-
-	connect(this, &MainWindow::startIpcPreviews, &ipcPreviewClient, &IPCPreviewClient::startGeneration,
-			Qt::QueuedConnection);
-	connect(this, &MainWindow::stopIpcPreviews, &ipcPreviewClient, &IPCPreviewClient::stopGeneration,
-			Qt::QueuedConnection);
+	connect(ui->radioMetadataOnly, &QRadioButton::toggled, this,
+			[this](bool toggled)
+			{
+				if(toggled)
+				{
+					this->ui->chkFillContentForContentless->setChecked(false);
+				};
+			});
 }
 
 void MainWindow::exportFailedPaths()
 {
-
 	QString filename =
 		QString("/tmp/looqs_indexresult_failed_%1").arg(QDateTime::currentDateTime().toString("yyyy-MM-dd_hhmmss"));
 	QFile outFile(filename);
@@ -266,8 +268,11 @@ void MainWindow::startIndexSync()
 	progressDialog.setValue(0);
 	progressDialog.open();
 
-	indexSyncer->setKeepGoing(true);
-	indexSyncer->setVerbose(false);
+	FileSaverOptions options;
+	options.keepGoing = true;
+	options.verbose = false;
+
+	indexSyncer->setFileSaverOptions(options);
 	indexSyncer->setDryRun(false);
 	indexSyncer->setRemoveDeletedFromIndex(true);
 
@@ -286,6 +291,7 @@ void MainWindow::startIndexing()
 	if(this->indexer->isRunning())
 	{
 		ui->btnStartIndexing->setEnabled(false);
+
 		ui->btnStartIndexing->setText("Start indexing");
 		this->indexer->requestCancellation();
 		return;
@@ -295,6 +301,9 @@ void MainWindow::startIndexing()
 	ui->resultsTab->setEnabled(false);
 	ui->settingsTab->setEnabled(false);
 	ui->txtPathScanAdd->setEnabled(false);
+	ui->btnAddPath->setEnabled(false);
+	ui->btnChoosePath->setEnabled(false);
+	ui->btnDeletePath->setEnabled(false);
 	ui->txtSearch->setEnabled(false);
 	ui->previewProcessBar->setValue(0);
 	ui->previewProcessBar->setVisible(true);
@@ -310,7 +319,18 @@ void MainWindow::startIndexing()
 	}
 	this->indexer->setTargetPaths(paths);
 	QString ignorePatterns = ui->txtIgnorePatterns->text();
-	this->indexer->setIgnorePattern(ignorePatterns.split(";"));
+	QStringList patterns = ignorePatterns.split(";");
+	patterns.removeAll(QString{});
+	this->indexer->setIgnorePattern(patterns);
+
+	FileSaverOptions options;
+	options.fillExistingContentless =
+		ui->chkFillContentForContentless->isEnabled() && ui->chkFillContentForContentless->isChecked();
+	options.metadataOnly = ui->radioMetadataOnly->isChecked();
+	options.verbose = false;
+	options.keepGoing = true;
+
+	this->indexer->setFileSaverOptions(options);
 	this->indexer->beginIndexing();
 	QSettings settings;
 	settings.setValue("indexPaths", pathSettingsValue);
@@ -333,6 +353,9 @@ void MainWindow::finishIndexing()
 	ui->resultsTab->setEnabled(true);
 	ui->settingsTab->setEnabled(true);
 	ui->txtPathScanAdd->setEnabled(true);
+	ui->btnAddPath->setEnabled(true);
+	ui->btnChoosePath->setEnabled(true);
+	ui->btnDeletePath->setEnabled(true);
 	ui->txtSearch->setEnabled(true);
 	if(result.erroredPaths > 0)
 	{
@@ -340,7 +363,7 @@ void MainWindow::finishIndexing()
 	}
 }
 
-void MainWindow::comboScaleChanged(int i)
+void MainWindow::comboScaleChanged(int /*i*/)
 {
 	QSettings scaleSetting;
 	scaleSetting.setValue("currentScale", ui->comboScale->currentText());
@@ -386,7 +409,8 @@ void MainWindow::processShortcut(int key)
 	{
 		ui->txtSearch->setFocus();
 		QString currentText = ui->txtSearch->text().trimmed();
-		int index = currentText.lastIndexOf(QRegularExpression("[\\s\\)]"));
+		static QRegularExpression separatorRegex("[\\s\\)]");
+		int index = currentText.lastIndexOf(separatorRegex);
 		if(index != -1)
 		{
 			bool isFilter = (index == currentText.length() - 1);
@@ -610,6 +634,8 @@ void MainWindow::saveSettings()
 								  "Failed to remove old database. Settings not saved.");
 			return;
 		}
+		QFile::remove(Common::databasePath() + "-shm");
+		QFile::remove(Common::databasePath() + "-wal");
 	}
 
 	QSettings settings;
@@ -632,23 +658,26 @@ void MainWindow::saveSettings()
 	qApp->quit();
 }
 
-void MainWindow::previewReceived(QSharedPointer<PreviewResult> preview, unsigned int previewGeneration)
+void MainWindow::previewReceived()
 {
-	if(previewGeneration < this->currentPreviewGeneration)
-	{
-		return;
-	}
 	this->ui->previewProcessBar->setValue(this->ui->previewProcessBar->value() + 1);
+	QBoxLayout *layout = static_cast<QBoxLayout *>(ui->scrollAreaWidgetContents->layout());
+	int index = layout->count();
+	if(index > 0)
+	{
+		--index;
+	}
+	QSharedPointer<PreviewResult> preview = this->previewCoordinator.resultAt(index);
+
 	if(!preview.isNull() && preview->hasPreview())
 	{
 		QString docPath = preview->getDocumentPath();
 		auto previewPage = preview->getPage();
-
 		ClickLabel *headerLabel = new ClickLabel();
 		headerLabel->setText(QString("Path: ") + preview->getDocumentPath());
 
 		ClickLabel *label = dynamic_cast<ClickLabel *>(preview->createPreviewWidget());
-		label->setMaximumWidth(QApplication::desktop()->availableGeometry().width() - 200);
+		label->setMaximumWidth(QApplication::primaryScreen()->availableGeometry().width() - 200);
 
 		QVBoxLayout *previewLayout = new QVBoxLayout();
 
@@ -662,8 +691,8 @@ void MainWindow::previewReceived(QSharedPointer<PreviewResult> preview, unsigned
 		{
 			QFileInfo fileInfo{docPath};
 			QMenu menu("labeRightClick", this);
-			createSearchResutlMenu(menu, fileInfo);
-			menu.addAction("Copy page number",
+			createSearchResultMenu(menu, fileInfo);
+			menu.addAction("Copy page number", this,
 						   [previewPage] { QGuiApplication::clipboard()->setText(QString::number(previewPage)); });
 			menu.exec(QCursor::pos());
 		};
@@ -677,7 +706,7 @@ void MainWindow::previewReceived(QSharedPointer<PreviewResult> preview, unsigned
 
 		previewLayout->addWidget(headerLabel);
 
-		previewLayout->setMargin(0);
+		previewLayout->setContentsMargins(0, 0, 0, 0);
 		previewLayout->insertStretch(0, 1);
 		previewLayout->insertStretch(-1, 1);
 		previewLayout->setAlignment(Qt::AlignCenter);
@@ -685,7 +714,7 @@ void MainWindow::previewReceived(QSharedPointer<PreviewResult> preview, unsigned
 
 		previewWidget->setLayout(previewLayout);
 
-		ui->scrollAreaWidgetContents->layout()->addWidget(previewWidget);
+		layout->insertWidget(index, previewWidget);
 	}
 }
 
@@ -802,7 +831,6 @@ void MainWindow::lineEditReturnPressed()
 
 void MainWindow::handleSearchResults(const QVector<SearchResult> &results)
 {
-	this->previewableSearchResults.clear();
 	qDeleteAll(ui->scrollAreaWidgetContents->children());
 
 	ui->treeResultsList->clear();
@@ -811,6 +839,8 @@ void MainWindow::handleSearchResults(const QVector<SearchResult> &results)
 	ui->comboPreviewFiles->setVisible(true);
 	ui->lblTotalPreviewPagesCount->setText("");
 
+	this->previewCoordinator.init(results);
+
 	bool hasDeleted = false;
 	QHash<QString, bool> seenMap;
 	for(const SearchResult &result : results)
@@ -831,34 +861,29 @@ void MainWindow::handleSearchResults(const QVector<SearchResult> &results)
 			item->setText(3, this->locale().formattedDataSize(result.fileData.size));
 		}
 		bool exists = pathInfo.exists();
-		if(exists)
-		{
-			if(result.wasContentSearch)
-			{
-				if(!pathInfo.suffix().contains("htm")) // hack until we can preview them properly...
-				{
-					if(PreviewGenerator::get(pathInfo) != nullptr)
-					{
-						this->previewableSearchResults.append(result);
-						if(!seenMap.contains(result.fileData.absPath))
-						{
-							ui->comboPreviewFiles->addItem(result.fileData.absPath);
-						}
-					}
-				}
-			}
-		}
-		else
+		if(!exists)
 		{
 			hasDeleted = true;
 		}
 		seenMap[absPath] = true;
 	}
 
+	seenMap.clear();
+	for(const SearchResult &result : this->previewCoordinator.getPreviewableSearchResults())
+	{
+		const QString &absPath = result.fileData.absPath;
+		if(!seenMap.contains(absPath))
+		{
+			ui->comboPreviewFiles->addItem(absPath);
+		}
+		seenMap[absPath] = true;
+	}
+
 	ui->treeResultsList->resizeColumnToContents(0);
 	ui->treeResultsList->resizeColumnToContents(1);
 	ui->treeResultsList->resizeColumnToContents(2);
-	previewDirty = !this->previewableSearchResults.empty();
+
+	previewDirty = this->previewCoordinator.previewableCount() > 0;
 
 	ui->spinPreviewPage->setValue(1);
 
@@ -867,8 +892,10 @@ void MainWindow::handleSearchResults(const QVector<SearchResult> &results)
 		makePreviews(1);
 	}
 
+	ui->tabWidget->setTabEnabled(1, previewDirty);
+
 	QString statusText = "Results: " + QString::number(results.size()) + " files";
-	statusText += ", previewable: " + QString::number(this->previewableSearchResults.count());
+	statusText += ", previewable: " + QString::number(this->previewCoordinator.previewableCount());
 	if(hasDeleted)
 	{
 		statusText += " WARNING: Some files are inaccessible. No preview available for those. Index may be out of sync";
@@ -885,7 +912,7 @@ int MainWindow::currentSelectedScale()
 
 void MainWindow::makePreviews(int page)
 {
-	if(this->previewableSearchResults.empty())
+	if(this->previewCoordinator.previewableCount() == 0)
 	{
 		return;
 	}
@@ -902,11 +929,10 @@ void MainWindow::makePreviews(int page)
 		ui->scrollAreaWidgetContents->setLayout(new QVBoxLayout());
 		ui->scrollAreaWidgetContents->layout()->setAlignment(Qt::AlignCenter);
 	}
-	ui->previewProcessBar->setMaximum(this->previewableSearchResults.size());
-	processedPdfPreviews = 0;
+	ui->previewProcessBar->setMaximum(this->previewCoordinator.previewableCount());
 
 	QVector<QString> wordsToHighlight;
-	QRegularExpression extractor(R"#("([^"]*)"|([^\s]+))#");
+	static QRegularExpression extractor(R"#("([^"]*)"|([^\s]+))#");
 	for(const Token &token : this->contentSearchQuery.getTokens())
 	{
 		if(token.type == FILTER_CONTENT_CONTAINS)
@@ -924,12 +950,12 @@ void MainWindow::makePreviews(int page)
 			}
 		}
 	}
-	int end = previewsPerPage;
-	int begin = page * previewsPerPage - previewsPerPage;
-	if(begin < 0)
+	int length = previewsPerPage;
+	int beginOffset = page * previewsPerPage - previewsPerPage;
+	if(beginOffset < 0)
 	{
 		// Should not happen actually
-		begin = 0;
+		beginOffset = 0;
 	}
 
 	int currentScale = currentSelectedScale();
@@ -939,7 +965,7 @@ void MainWindow::makePreviews(int page)
 	renderConfig.wordsToHighlight = wordsToHighlight;
 
 	QVector<RenderTarget> targets;
-	for(SearchResult &sr : this->previewableSearchResults)
+	for(const SearchResult &sr : this->previewCoordinator.getPreviewableSearchResults())
 	{
 		if(ui->comboPreviewFiles->currentIndex() != 0)
 		{
@@ -951,22 +977,23 @@ void MainWindow::makePreviews(int page)
 		RenderTarget renderTarget;
 		renderTarget.path = sr.fileData.absPath;
 		renderTarget.page = (int)sr.page;
+
 		targets.append(renderTarget);
 	}
 	int numpages = ceil(static_cast<double>(targets.size()) / previewsPerPage);
 	ui->spinPreviewPage->setMaximum(numpages);
-	targets = targets.mid(begin, end);
+	targets = targets.mid(beginOffset, length);
 
 	ui->lblTotalPreviewPagesCount->setText(QString::number(numpages));
 	ui->previewProcessBar->setMaximum(targets.count());
 	ui->previewProcessBar->setMinimum(0);
 	ui->previewProcessBar->setValue(0);
-	ui->previewProcessBar->setVisible(this->previewableSearchResults.size() > 0);
-	++this->currentPreviewGeneration;
+	ui->previewProcessBar->setVisible(this->previewCoordinator.previewableCount() > 0);
 	this->ui->spinPreviewPage->setEnabled(false);
 	this->ui->comboPreviewFiles->setEnabled(false);
 	this->ui->txtSearch->setEnabled(false);
-	emit startIpcPreviews(renderConfig, targets);
+
+	this->previewCoordinator.startGeneration(renderConfig, targets);
 }
 
 void MainWindow::handleSearchError(QString error)
@@ -974,27 +1001,87 @@ void MainWindow::handleSearchError(QString error)
 	ui->lblSearchResults->setText("Error:" + error);
 }
 
-void MainWindow::createSearchResutlMenu(QMenu &menu, const QFileInfo &fileInfo)
+void MainWindow::createSearchResultMenu(QMenu &menu, const QFileInfo &fileInfo)
 {
-	menu.addAction("Copy filename to clipboard",
+	menu.addAction("Copy filename to clipboard", this,
 				   [&fileInfo] { QGuiApplication::clipboard()->setText(fileInfo.fileName()); });
-	menu.addAction("Copy full path to clipboard",
+	menu.addAction("Copy full path to clipboard", this,
 				   [&fileInfo] { QGuiApplication::clipboard()->setText(fileInfo.absoluteFilePath()); });
-	menu.addAction("Open containing folder", [this, &fileInfo] { this->openFile(fileInfo.absolutePath()); });
+	menu.addAction("Open containing folder", this, [this, &fileInfo] { this->openFile(fileInfo.absolutePath()); });
 
+	auto previewables = this->previewCoordinator.getPreviewableSearchResults();
 	auto result =
-		std::find_if(this->previewableSearchResults.begin(), this->previewableSearchResults.end(),
-					 [this, &fileInfo](SearchResult &a) { return fileInfo.absoluteFilePath() == a.fileData.absPath; });
+		std::find_if(previewables.begin(), previewables.end(),
+					 [&fileInfo](SearchResult &a) { return fileInfo.absoluteFilePath() == a.fileData.absPath; });
 
-	if(result != this->previewableSearchResults.end())
+	if(result != previewables.end())
 	{
-		menu.addAction("Show previews for this file",
+		menu.addAction("Show previews for this file", this,
 					   [this, &fileInfo]
 					   {
 						   ui->tabWidget->setCurrentIndex(1);
 						   this->ui->comboPreviewFiles->setCurrentText(fileInfo.absoluteFilePath());
 					   });
 	}
+
+	QMenu *tagMenu = menu.addMenu("Tag file with: ");
+	QVector<QString> allTags = this->dbService->getTags();
+	QHash<QString, bool> fileTags;
+
+	QString path = fileInfo.absoluteFilePath();
+
+	for(const QString &fileTag : this->dbService->getTagsForPath(path))
+	{
+		fileTags[fileTag] = true;
+	}
+
+	for(const QString &tag : allTags)
+	{
+		QCheckBox *checkBox = new QCheckBox(tagMenu);
+		QWidgetAction *checkableAction = new QWidgetAction(tagMenu);
+		checkableAction->setDefaultWidget(checkBox);
+		checkBox->setText(tag);
+		checkBox->setChecked(fileTags.contains(tag));
+		tagMenu->addAction(checkableAction);
+
+		connect(checkBox, &QCheckBox::stateChanged, this,
+				[this, checkBox, path]
+				{
+					QVector<QString> currentTags = this->dbService->getTagsForPath(path);
+					QString checkBoxText = checkBox->text();
+					if(checkBox->isChecked())
+					{
+						if(!this->tagManager->addTagsToPath(path, {checkBoxText}))
+						{
+							QMessageBox::critical(this, "Error while adding tag",
+												  "An error occured while trying to add the tag");
+						}
+					}
+					else
+					{
+						if(!this->tagManager->removeTagsForPath(path, {checkBoxText}))
+						{
+							QMessageBox::critical(this, "Error while removing tag",
+												  "An error occured while trying to remove the tag");
+						}
+					}
+				});
+	}
+
+	tagMenu->addAction("Add new tags", this,
+					   [this, path]
+					   {
+						   bool ok;
+						   QString text =
+							   QInputDialog::getText(this, tr("Enter new tags"), tr("New tags (comma separated):"),
+													 QLineEdit::Normal, "", &ok);
+
+						   if(ok && !this->tagManager->addTagsToPath(path, text, ','))
+						   {
+							   QMessageBox::critical(this, "Error while trying to add tags",
+													 "An error occured while trying to add tags");
+						   }
+					   });
 }
 
 void MainWindow::openDocument(QString path, int num)
@@ -1024,7 +1111,7 @@ void MainWindow::openFile(QString path)
 	QDesktopServices::openUrl(QUrl::fromLocalFile(path));
 }
 
-void MainWindow::treeSearchItemActivated(QTreeWidgetItem *item, int i)
+void MainWindow::treeSearchItemActivated(QTreeWidgetItem *item, int /*i*/)
 {
 	openFile(item->text(1));
 }
@@ -1038,22 +1125,22 @@ void MainWindow::showSearchResultsContextMenu(const QPoint &point)
 	}
 	QFileInfo pathinfo(item->text(1));
 	QMenu menu("SearchResults", this);
-	createSearchResutlMenu(menu, pathinfo);
+	createSearchResultMenu(menu, pathinfo);
 	menu.exec(QCursor::pos());
 }
 
 MainWindow::~MainWindow()
 {
 	syncerThread.terminate();
-	ipcClientThread.terminate();
 	delete this->indexSyncer;
 	delete this->dbService;
 	delete this->dbFactory;
 	delete this->indexer;
+	delete this->tagManager;
 	delete ui;
 }
 
-void MainWindow::closeEvent(QCloseEvent *event)
+void MainWindow::closeEvent(QCloseEvent * /*event*/)
 {
 	QStringList list = this->searchHistory.toList();
 	QSettings settings;

gui/mainwindow.h

@@ -12,8 +12,9 @@
 #include <QProgressDialog>
 #include "../shared/looqsquery.h"
 #include "../shared/indexsyncer.h"
-#include "ipcpreviewclient.h"
+#include "previewcoordinator.h"
 #include "indexer.h"
+#include "tagmanager.h"
 namespace Ui
 {
 class MainWindow;
@@ -23,60 +24,51 @@ class MainWindow : public QMainWindow
 {
 	Q_OBJECT
 
-  public:
-	explicit MainWindow(QWidget *parent, QString socketPath);
-	~MainWindow();
-  signals:
-	void beginSearch(const QString &query);
-	void startPdfPreviewGeneration(QVector<SearchResult> paths, double scalefactor);
-
-  protected:
-	void closeEvent(QCloseEvent *event) override;
-
   private:
 	DatabaseFactory *dbFactory;
 	SqliteDbService *dbService;
 	Ui::MainWindow *ui;
-	IPCPreviewClient ipcPreviewClient;
-	QThread ipcClientThread;
+
+	PreviewCoordinator previewCoordinator;
+
 	QThread syncerThread;
+	Indexer *indexer;
 	IndexSyncer *indexSyncer;
 	QProgressDialog progressDialog;
-
-	Indexer *indexer;
 	QFileIconProvider iconProvider;
-	bool previewDirty;
 	QSqlDatabase db;
 	QFutureWatcher<QVector<SearchResult>> searchWatcher;
-	void add(QString path, unsigned int page);
-	QVector<SearchResult> previewableSearchResults;
+	LooqsQuery contentSearchQuery;
+	QVector<QString> searchHistory;
+
+	TagManager *tagManager;
+
+	int currentSearchHistoryIndex = 0;
+	QString currentSavedSearchText;
+	bool previewDirty = false;
+	int previewsPerPage = 20;
+
 	void connectSignals();
 	void makePreviews(int page);
 	bool previewTabActive();
 	bool indexerTabActive();
 	void keyPressEvent(QKeyEvent *event) override;
-	unsigned int processedPdfPreviews;
 	void handleSearchResults(const QVector<SearchResult> &results);
 	void handleSearchError(QString error);
-	LooqsQuery contentSearchQuery;
-	int previewsPerPage;
-	void createSearchResutlMenu(QMenu &menu, const QFileInfo &fileInfo);
+	void createSearchResultMenu(QMenu &menu, const QFileInfo &fileInfo);
 	void openDocument(QString path, int num);
 	void openFile(QString path);
-	unsigned int currentPreviewGeneration = 1;
 	void initSettingsTabs();
 	int currentSelectedScale();
 	void processShortcut(int key);
-	bool eventFilter(QObject *object, QEvent *event);
-	QVector<QString> searchHistory;
-	int currentSearchHistoryIndex = 0;
-	QString currentSavedSearchText;
+	bool eventFilter(QObject *object, QEvent *event) override;
+
   private slots:
 	void lineEditReturnPressed();
 	void treeSearchItemActivated(QTreeWidgetItem *item, int i);
 	void showSearchResultsContextMenu(const QPoint &point);
 	void tabChanged();
-	void previewReceived(QSharedPointer<PreviewResult> preview, unsigned int previewGeneration);
+	void previewReceived();
 	void comboScaleChanged(int i);
 	void spinPreviewPageValueChanged(int val);
 	void startIndexing();
@@ -90,6 +82,16 @@ class MainWindow : public QMainWindow
 	void startIpcPreviews(RenderConfig config, const QVector<RenderTarget> &targets);
 	void stopIpcPreviews();
 	void beginIndexSync();
+
+  public:
+	explicit MainWindow(QWidget *parent, QString socketPath);
+	~MainWindow();
+  signals:
+	void beginSearch(const QString &query);
+	void startPdfPreviewGeneration(QVector<SearchResult> paths, double scalefactor);
+
+  protected:
+	void closeEvent(QCloseEvent *event) override;
 };
 
 #endif // MAINWINDOW_H

gui/mainwindow.ui

@@ -18,16 +18,13 @@
     <item>
      <widget class="QLineEdit" name="txtSearch"/>
     </item>
-    <item>
-     <layout class="QHBoxLayout" name="horizontalLayout_3"/>
-    </item>
     <item>
      <widget class="QTabWidget" name="tabWidget">
       <property name="tabPosition">
        <enum>QTabWidget::South</enum>
       </property>
       <property name="currentIndex">
-       <number>1</number>
+       <number>2</number>
       </property>
       <widget class="QWidget" name="resultsTab">
        <attribute name="title">
@@ -82,7 +79,7 @@
              <x>0</x>
              <y>0</y>
              <width>1244</width>
-             <height>633</height>
+             <height>641</height>
             </rect>
            </property>
            <layout class="QHBoxLayout" name="horizontalLayout"/>
@@ -195,62 +192,6 @@
        </attribute>
        <layout class="QGridLayout" name="gridLayout">
         <item row="6" column="0">
-         <widget class="QLineEdit" name="txtIgnorePatterns"/>
-        </item>
-        <item row="11" column="0">
-         <widget class="QPushButton" name="btnStartIndexing">
-          <property name="text">
-           <string>Start indexing</string>
-          </property>
-         </widget>
-        </item>
-        <item row="1" column="0">
-         <widget class="QGroupBox" name="groupBoxPaths">
-          <property name="title">
-           <string>Add paths to scan</string>
-          </property>
-          <layout class="QGridLayout" name="gridLayout_2">
-           <item row="1" column="0">
-            <widget class="QLineEdit" name="txtPathScanAdd"/>
-           </item>
-           <item row="3" column="0" colspan="5">
-            <widget class="QListWidget" name="lstPaths"/>
-           </item>
-           <item row="1" column="3">
-            <widget class="QToolButton" name="btnDeletePath">
-             <property name="enabled">
-              <bool>false</bool>
-             </property>
-             <property name="text">
-              <string>Delete</string>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="1">
-            <widget class="QPushButton" name="btnChoosePath">
-             <property name="text">
-              <string>...</string>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="2">
-            <widget class="QPushButton" name="btnAddPath">
-             <property name="text">
-              <string>Add</string>
-             </property>
-            </widget>
-           </item>
-          </layout>
-         </widget>
-        </item>
-        <item row="5" column="0">
-         <widget class="QLabel" name="label">
-          <property name="text">
-           <string>Ignore patterns, separated by ';'. Example: *.js;*Downloads*</string>
-          </property>
-         </widget>
-        </item>
-        <item row="9" column="0">
          <widget class="QGroupBox" name="groupBoxIndexProgress">
           <property name="contextMenuPolicy">
            <enum>Qt::PreventContextMenu</enum>
@@ -452,6 +393,108 @@
           </layout>
          </widget>
         </item>
+        <item row="2" column="0">
+         <widget class="QGroupBox" name="groupBoxIndexOptions">
+          <property name="title">
+           <string>Index options</string>
+          </property>
+          <layout class="QVBoxLayout" name="verticalLayout_11">
+           <item>
+            <widget class="QLabel" name="label">
+             <property name="text">
+              <string>Ignore patterns, separated by ';'. Example: *.js;*Downloads*:</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QLineEdit" name="txtIgnorePatterns"/>
+           </item>
+           <item>
+            <widget class="Line" name="line">
+             <property name="orientation">
+              <enum>Qt::Horizontal</enum>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QRadioButton" name="radioIndexEverything">
+             <property name="text">
+              <string>Index everything (metadata + file content)</string>
+             </property>
+             <property name="checked">
+              <bool>true</bool>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QCheckBox" name="chkFillContentForContentless">
+             <property name="enabled">
+              <bool>true</bool>
+             </property>
+             <property name="text">
+              <string>Index content for files previously indexed without content</string>
+             </property>
+             <property name="checked">
+              <bool>false</bool>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QRadioButton" name="radioMetadataOnly">
+             <property name="text">
+              <string>Index metadata only, don't process content of files</string>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </widget>
+        </item>
+        <item row="8" column="0">
+         <widget class="QPushButton" name="btnStartIndexing">
+          <property name="text">
+           <string>Start indexing</string>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="0">
+         <widget class="QGroupBox" name="groupBoxPaths">
+          <property name="title">
+           <string>Add paths to scan</string>
+          </property>
+          <layout class="QGridLayout" name="gridLayout_2">
+           <item row="1" column="0">
+            <widget class="QLineEdit" name="txtPathScanAdd"/>
+           </item>
+           <item row="3" column="0" colspan="5">
+            <widget class="QListWidget" name="lstPaths"/>
+           </item>
+           <item row="1" column="3">
+            <widget class="QToolButton" name="btnDeletePath">
+             <property name="enabled">
+              <bool>false</bool>
+             </property>
+             <property name="text">
+              <string>Delete</string>
+             </property>
+            </widget>
+           </item>
+           <item row="1" column="1">
+            <widget class="QPushButton" name="btnChoosePath">
+             <property name="text">
+              <string>...</string>
+             </property>
+            </widget>
+           </item>
+           <item row="1" column="2">
+            <widget class="QPushButton" name="btnAddPath">
+             <property name="text">
+              <string>Add</string>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </widget>
+        </item>
        </layout>
       </widget>
       <widget class="QWidget" name="settingsTab">
@@ -701,5 +744,22 @@
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources/>
- <connections/>
+ <connections>
+  <connection>
+   <sender>radioIndexEverything</sender>
+   <signal>toggled(bool)</signal>
+   <receiver>chkFillContentForContentless</receiver>
+   <slot>setEnabled(bool)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>639</x>
+     <y>464</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>639</x>
+     <y>497</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
 </ui>

gui/previewcoordinator.cpp

@@ -0,0 +1,98 @@
+#include "previewcoordinator.h"
+#include <QFileInfo>
+
+PreviewCoordinator::PreviewCoordinator()
+{
+	this->ipcPreviewClient.moveToThread(&this->ipcClientThread);
+
+	connect(&ipcPreviewClient, &IPCPreviewClient::previewReceived, this, &PreviewCoordinator::handleReceivedPreview,
+			Qt::QueuedConnection);
+	connect(&ipcPreviewClient, &IPCPreviewClient::finished, this, [&] { emit completedGeneration(); });
+	connect(this, &PreviewCoordinator::ipcStartGeneration, &ipcPreviewClient, &IPCPreviewClient::startGeneration,
+			Qt::QueuedConnection);
+	connect(&ipcPreviewClient, &IPCPreviewClient::error, this, [&](QString err) { emit error(err); });
+
+	this->ipcClientThread.start();
+}
+
+void PreviewCoordinator::init(const QVector<SearchResult> &searchResults)
+{
+	this->previewableSearchResults.clear();
+	for(const SearchResult &result : searchResults)
+	{
+		if(result.wasContentSearch)
+		{
+			QString path = result.fileData.absPath;
+			// HACK until we can preview them properly
+			if(path.endsWith(".html") || path.endsWith(".htm"))
+			{
+				continue;
+			}
+			QFileInfo info{path};
+			if(info.exists())
+			{
+				this->previewableSearchResults.append(result);
+			}
+		}
+	}
+}
+
+void PreviewCoordinator::setSocketPath(QString socketPath)
+{
+	this->socketPath = socketPath;
+	this->ipcPreviewClient.setSocketPath(socketPath);
+}
+
+int PreviewCoordinator::previewableCount() const
+{
+	return this->previewableSearchResults.count();
+}
+
+QSharedPointer<PreviewResult> PreviewCoordinator::resultAt(int index)
+{
+	if(this->previewResults.size() > index)
+	{
+		return {this->previewResults[index]};
+	}
+	return {nullptr};
+}
+
+const QVector<SearchResult> &PreviewCoordinator::getPreviewableSearchResults() const
+{
+	return this->previewableSearchResults;
+}
+
+void PreviewCoordinator::handleReceivedPreview(QSharedPointer<PreviewResult> preview, unsigned int previewGeneration)
+{
+	if(previewGeneration < this->currentPreviewGeneration)
+	{
+		return;
+	}
+	if(!preview.isNull() && preview->hasPreview())
+	{
+		QString docPath = preview->getDocumentPath();
+		auto previewPage = preview->getPage();
+		int pos = previewOrder[docPath + QString::number(previewPage)];
+		this->previewResults[pos] = preview;
+		emit previewReady();
+	}
+}
+
+void PreviewCoordinator::startGeneration(RenderConfig config, const QVector<RenderTarget> &targets)
+{
+	++this->currentPreviewGeneration;
+
+	this->previewOrder.clear();
+	this->previewResults.clear();
+
+	this->previewResults.resize(targets.size());
+	this->previewResults.fill(nullptr);
+
+	int i = 0;
+	for(const RenderTarget &target : targets)
+	{
+		this->previewOrder[target.path + QString::number(target.page)] = i++;
+	}
+
+	emit ipcStartGeneration(config, targets);
+}

gui/previewcoordinator.h

@@ -0,0 +1,48 @@
+#ifndef PREVIEWCOORDINATOR_H
+#define PREVIEWCOORDINATOR_H
+#include <QVector>
+#include <QObject>
+#include <QThread>
+#include "searchresult.h"
+#include "previewresult.h"
+#include "ipcpreviewclient.h"
+#include "rendertarget.h"
+class PreviewCoordinator : public QObject
+{
+	Q_OBJECT
+  private:
+	QThread ipcClientThread;
+	IPCPreviewClient ipcPreviewClient;
+	QString socketPath;
+
+	QVector<QSharedPointer<PreviewResult>> previewResults;
+	QVector<SearchResult> previewableSearchResults;
+
+	unsigned int currentPreviewGeneration = 1;
+
+	/* Quick lookup table for the order a preview should have */
+	QHash<QString, int> previewOrder;
+
+  public:
+	PreviewCoordinator();
+
+	void init(const QVector<SearchResult> &searchResults);
+
+	int previewableCount() const;
+	const QVector<SearchResult> &getPreviewableSearchResults() const;
+
+	QSharedPointer<PreviewResult> resultAt(int index);
+
+	void setSocketPath(QString socketPath);
+  public slots:
+	void startGeneration(RenderConfig config, const QVector<RenderTarget> &targets);
+	void handleReceivedPreview(QSharedPointer<PreviewResult> preview, unsigned int previewGeneration);
+
+  signals:
+	void previewReady();
+	void completedGeneration();
+	void error(QString);
+	void ipcStartGeneration(RenderConfig config, const QVector<RenderTarget> &targets);
+};
+
+#endif // PREVIEWCOORDINATOR_H

gui/previewgenerator.cpp

@@ -1,20 +1,24 @@
 #include "../shared/common.h"
 #include "previewgenerator.h"
+#include <QMutexLocker>
 #include "previewgeneratorpdf.h"
 #include "previewgeneratorplaintext.h"
 #include "previewgeneratorodt.h"
 
 static PreviewGenerator *plainTextGenerator = new PreviewGeneratorPlainText();
 
-static QMap<QString, PreviewGenerator *> generators{
+static QHash<QString, PreviewGenerator *> generators{
 	{"pdf", new PreviewGeneratorPdf()}, {"txt", plainTextGenerator},  {"md", plainTextGenerator},
 	{"py", plainTextGenerator},			{"java", plainTextGenerator}, {"js", plainTextGenerator},
 	{"cpp", plainTextGenerator},		{"c", plainTextGenerator},	  {"sql", plainTextGenerator},
 	{"odt", new PreviewGeneratorOdt()}};
 
+static QMutex generatorsMutex;
 PreviewGenerator *PreviewGenerator::get(QFileInfo &info)
 {
+	QMutexLocker locker(&generatorsMutex);
 	PreviewGenerator *result = generators.value(info.suffix(), nullptr);
+	locker.unlock();
 	if(result == nullptr)
 	{
 		if(Common::isTextFile(info))

gui/previewgeneratorodt.cpp

@@ -24,7 +24,7 @@ QSharedPointer<PreviewResult> PreviewGeneratorOdt::generate(RenderConfig config,
 		throw LooqsGeneralException("Error while reading content.xml of " + documentPath);
 	}
 	TagStripperProcessor tsp;
-	QString content = tsp.process(entireContent).first().content;
+	QString content = tsp.process(entireContent).pages.constFirst().content;
 
 	PreviewGeneratorPlainText plainTextGenerator;
 	result->setText(plainTextGenerator.generatePreviewText(content, config, info.fileName()));

gui/previewgeneratorpdf.cpp

@@ -7,22 +7,27 @@ static QMutex cacheMutex;
 
 Poppler::Document *PreviewGeneratorPdf::document(QString path)
 {
+	QMutexLocker locker(&cacheMutex);
 	if(documentcache.contains(path))
 	{
 		return documentcache.value(path);
 	}
-	Poppler::Document *result = Poppler::Document::load(path);
-	if(result == nullptr)
+	locker.unlock();
+	auto result = Poppler::Document::load(path);
+	if(!result)
 	{
+		qDebug() << "Failed to load document: " << path;
 		// TODO: some kind of user feedback would be nice
 		return nullptr;
 	}
 	result->setRenderHint(Poppler::Document::TextAntialiasing);
-
-	QMutexLocker locker(&cacheMutex);
-	documentcache.insert(path, result);
+	result->setRenderHint(Poppler::Document::TextHinting);
+	result->setRenderHint(Poppler::Document::TextSlightHinting);
+	auto ptr = result.release();
+	locker.relock();
+	documentcache.insert(path, ptr);
 	locker.unlock();
-	return result;
+	return ptr;
 }
 
 QSharedPointer<PreviewResult> PreviewGeneratorPdf::generate(RenderConfig config, QString documentPath,
@@ -32,10 +37,12 @@ QSharedPointer<PreviewResult> PreviewGeneratorPdf::generate(RenderConfig config,
 	Poppler::Document *doc = document(documentPath);
 	if(doc == nullptr)
 	{
+		qDebug() << "Failed to obtain document for: " << documentPath;
 		return QSharedPointer<PreviewResult>(result);
 	}
 	if(doc->isLocked())
 	{
+		qDebug() << "Failed to open document as its locked: " << documentPath;
 		return QSharedPointer<PreviewResult>(result);
 	}
 	int p = (int)page - 1;
@@ -43,7 +50,12 @@ QSharedPointer<PreviewResult> PreviewGeneratorPdf::generate(RenderConfig config,
 	{
 		p = 0;
 	}
-	Poppler::Page *pdfPage = doc->page(p);
+	auto pdfPage = doc->page(p);
+	if(!pdfPage)
+	{
+		qDebug() << "Failed to open page " << p << " for document" << documentPath;
+		return QSharedPointer<PreviewResult>(result);
+	}
 	QImage img = pdfPage->renderToImage(config.scaleX, config.scaleY);
 	for(QString &word : config.wordsToHighlight)
 	{

gui/previewgeneratorpdf.h

@@ -1,6 +1,6 @@
 #ifndef PREVIEWGENERATORPDF_H
 #define PREVIEWGENERATORPDF_H
-#include <poppler-qt5.h>
+#include <poppler-qt6.h>
 #include "previewgenerator.h"
 #include "previewresultpdf.h"
 

gui/previewgeneratorplaintext.cpp

@@ -103,7 +103,7 @@ QString PreviewGeneratorPlainText::generateLineBasedPreviewText(QTextStream &in,
 		int foundWordsCount = 0;
 		for(QString &word : config.wordsToHighlight)
 		{
-			QRegularExpression searchRegex("\\b" + word + "\\b");
+			QRegularExpression searchRegex("\\b" + QRegularExpression::escape(word) + "\\b");
 			bool containsRegex = line.contains(searchRegex);
 			bool contains = false;
 			if(!containsRegex)
@@ -195,7 +195,7 @@ QString PreviewGeneratorPlainText::generateLineBasedPreviewText(QTextStream &in,
 				  int totalWordsA = 0;
 				  int differentWordsB = 0;
 				  int totalWordsB = 0;
-				  for(int count : a.wordCountMap.values())
+				  for(int count : qAsConst(a.wordCountMap))
 				  {
 					  if(count > 0)
 					  {
@@ -203,7 +203,7 @@ QString PreviewGeneratorPlainText::generateLineBasedPreviewText(QTextStream &in,
 					  }
 					  totalWordsA += count;
 				  }
-				  for(int count : b.wordCountMap.values())
+				  for(int count : qAsConst(b.wordCountMap))
 				  {
 					  if(count > 0)
 					  {
@@ -246,17 +246,21 @@ QString PreviewGeneratorPlainText::generateLineBasedPreviewText(QTextStream &in,
 			totalWordCountMap[it->first] = totalWordCountMap.value(it->first, 0) + it->second;
 		}
 	}
-	if(isTruncated)
+	if(!resultText.isEmpty())
 	{
-		header += "(truncated) ";
-	}
-	for(QString &word : config.wordsToHighlight)
-	{
-		header += word + ": " + QString::number(totalWordCountMap[word]) + " ";
-	}
-	header += "<hr>";
+		if(isTruncated)
+		{
+			header += "(truncated) ";
+		}
+		for(QString &word : config.wordsToHighlight)
+		{
+			header += word + ": " + QString::number(totalWordCountMap[word]) + " ";
+		}
+		header += "<hr>";
 
-	return header + resultText;
+		resultText = header + resultText;
+	}
+	return resultText;
 }
 
 QSharedPointer<PreviewResult> PreviewGeneratorPlainText::generate(RenderConfig config, QString documentPath,

gui/previewresultpdf.cpp

@@ -30,7 +30,7 @@ QByteArray PreviewResultPdf::serialize() const
 
 QSharedPointer<PreviewResultPdf> PreviewResultPdf::deserialize(QByteArray &ba)
 {
-	PreviewResultPdf *result = new PreviewResultPdf();
+	QSharedPointer<PreviewResultPdf> result(new PreviewResultPdf());
 	PreviewResultType type;
 
 	QDataStream stream{&ba, QIODevice::ReadOnly};
@@ -40,5 +40,5 @@ QSharedPointer<PreviewResultPdf> PreviewResultPdf::deserialize(QByteArray &ba)
 		throw std::runtime_error("Invalid byte array: Not a pdf preview");
 	}
 	stream >> result->documentPath >> result->page >> result->previewImage;
-	return QSharedPointer<PreviewResultPdf>(result);
+	return result;
 }

gui/previewresultplaintext.cpp

@@ -40,7 +40,8 @@ QByteArray PreviewResultPlainText::serialize() const
 
 QSharedPointer<PreviewResultPlainText> PreviewResultPlainText::deserialize(QByteArray &ba)
 {
-	PreviewResultPlainText *result = new PreviewResultPlainText();
+	QSharedPointer<PreviewResultPlainText> result(new PreviewResultPlainText());
+
 	PreviewResultType type;
 
 	QDataStream stream{&ba, QIODevice::ReadOnly};
@@ -50,5 +51,5 @@ QSharedPointer<PreviewResultPlainText> PreviewResultPlainText::deserialize(QByte
 		throw std::runtime_error("Invalid byte array: Not a pdf preview");
 	}
 	stream >> result->documentPath >> result->page >> result->text;
-	return QSharedPointer<PreviewResultPlainText>(result);
+	return result;
 }

shared/databasefactory.cpp

@@ -1,4 +1,5 @@
 #include <QThread>
+#include <QSqlQuery>
 #include "databasefactory.h"
 #include "logger.h"
 #include "looqsgeneralexception.h"
@@ -31,11 +32,23 @@ QSqlDatabase DatabaseFactory::forCurrentThread()
 	QSqlDatabase db =
 		QSqlDatabase::addDatabase("QSQLITE", "LOOQS" + QString::number((quint64)QThread::currentThread(), 16));
 	db.setDatabaseName(this->connectionString);
+	db.setConnectOptions("QSQLITE_BUSY_TIMEOUT=30000");
 	if(!db.open())
 	{
 		Logger::error() << "Failed to open the database: " << this->connectionString << Qt::endl;
 		throw LooqsGeneralException("Failed to create open new connection");
 	}
+	QSqlQuery q(db);
+	if(!q.exec("PRAGMA journal_mode=WAL;"))
+	{
+		Logger::error() << "Failed to set WAL mode: " << this->connectionString << Qt::endl;
+		throw LooqsGeneralException("Failed to set WAL mode on sqlite database");
+	}
+	if(!q.exec("PRAGMA wal_autocheckpoint=250;"))
+	{
+		Logger::error() << "Failed to set WAL autocheckpoint: " << this->connectionString << Qt::endl;
+		throw LooqsGeneralException("Failed to set WAL autocheckpoint on sqlite database");
+	}
 	dbStore.setLocalData(db);
 	return db;
 }

shared/defaulttextprocessor.cpp

@@ -1,6 +1,6 @@
 #include <QFile>
 #include <QDataStream>
-#include <QTextCodec>
+#include <QStringDecoder>
 #include <QDebug>
 #include "defaulttextprocessor.h"
 
@@ -13,10 +13,10 @@ QString DefaultTextProcessor::processText(const QByteArray &data) const
 	QString encoding = encodingDetector.detectEncoding(data);
 	if(!encoding.isEmpty())
 	{
-		QTextCodec *codec = QTextCodec::codecForName(encoding.toUtf8());
-		if(codec != nullptr)
+		QStringDecoder decoder = QStringDecoder(encoding.toStdString().c_str());
+		if(decoder.isValid())
 		{
-			return codec->toUnicode(data);
+			return decoder(data);
 		}
 		qWarning() << "No codec found for " << encoding;
 		return QString(data);
@@ -24,7 +24,9 @@ QString DefaultTextProcessor::processText(const QByteArray &data) const
 	return {};
 }
 
-QVector<PageData> DefaultTextProcessor::process(const QByteArray &data) const
+DocumentProcessResult DefaultTextProcessor::process(const QByteArray &data) const
 {
-	return {{0, processText(data)}};
+	DocumentProcessResult result;
+	result.pages.append({0, processText(data)});
+	return result;
 }

shared/defaulttextprocessor.h

@@ -11,7 +11,7 @@ class DefaultTextProcessor : public Processor
   public:
 	DefaultTextProcessor();
 	QString processText(const QByteArray &data) const;
-	QVector<PageData> process(const QByteArray &data) const override;
+	DocumentProcessResult process(const QByteArray &data) const override;
 };
 
 #endif // DEFAULTTEXTPROCESSOR_H

shared/documentoutlineentry.cpp

@@ -0,0 +1,31 @@
+#include "documentoutlineentry.h"
+
+DocumentOutlineEntry::DocumentOutlineEntry()
+{
+}
+
+QDataStream &operator<<(QDataStream &out, const DocumentOutlineEntry &pd)
+{
+	out << pd.text << pd.type << pd.destinationPage;
+	out << pd.children.size();
+	for(const DocumentOutlineEntry &entry : pd.children)
+	{
+		out << entry;
+	}
+	return out;
+}
+
+QDataStream &operator>>(QDataStream &in, DocumentOutlineEntry &pd)
+{
+	in >> pd.text >> pd.type >> pd.destinationPage;
+
+	qsizetype numChildren;
+	in >> numChildren;
+	for(int i = 0; i < numChildren; i++)
+	{
+		DocumentOutlineEntry entry;
+		in >> entry;
+		pd.children.append(entry);
+	}
+	return in;
+}

shared/documentoutlineentry.h

@@ -0,0 +1,30 @@
+#ifndef DOCUMENTOUTLINEENTRY_H
+#define DOCUMENTOUTLINEENTRY_H
+#include <QMetaType>
+#include <QDataStream>
+#include <QString>
+#include <QVector>
+
+enum OutlineDestinationType
+{
+	OUTLINE_DESTINATION_TYPE_NONE,
+	OUTLINE_DESTINATION_TYPE_PAGE
+	/* In the future, links, or #anchors are possible */
+};
+
+class DocumentOutlineEntry
+{
+  public:
+	DocumentOutlineEntry();
+	QVector<DocumentOutlineEntry> children;
+	OutlineDestinationType type;
+	QString text;
+	unsigned int destinationPage;
+};
+
+Q_DECLARE_METATYPE(DocumentOutlineEntry);
+
+QDataStream &operator<<(QDataStream &out, const DocumentOutlineEntry &pd);
+QDataStream &operator>>(QDataStream &in, DocumentOutlineEntry &pd);
+
+#endif // DOCUMENTOUTLINEENTRY_H

shared/documentprocessresult.cpp

@@ -0,0 +1,39 @@
+#include "documentprocessresult.h"
+#include <QDebug>
+QDataStream &operator<<(QDataStream &out, const DocumentProcessResult &pd)
+{
+	out << pd.pages.size();
+	out << pd.outlines.size();
+	for(const PageData &pd : pd.pages)
+	{
+		out << pd;
+	}
+	for(const DocumentOutlineEntry &outline : pd.outlines)
+	{
+		out << outline;
+	}
+	return out;
+}
+
+QDataStream &operator>>(QDataStream &in, DocumentProcessResult &pd)
+{
+	qsizetype numPages, numOutlines;
+	in >> numPages;
+	in >> numOutlines;
+
+	for(int i = 0; i < numPages; i++)
+	{
+		PageData data;
+		in >> data;
+		pd.pages.append(data);
+	}
+
+	for(int i = 0; i < numOutlines; i++)
+	{
+		DocumentOutlineEntry outline;
+		in >> outline;
+		pd.outlines.append(outline);
+	}
+
+	return in;
+}

shared/documentprocessresult.h

@@ -0,0 +1,17 @@
+#ifndef DOCUMENTPROCESSRESULT_H
+#define DOCUMENTPROCESSRESULT_H
+#include <pagedata.h>
+#include <documentoutlineentry.h>
+
+class DocumentProcessResult
+{
+  public:
+	QVector<PageData> pages;
+	QVector<DocumentOutlineEntry> outlines;
+};
+Q_DECLARE_METATYPE(DocumentProcessResult);
+
+QDataStream &operator<<(QDataStream &out, const DocumentProcessResult &pd);
+QDataStream &operator>>(QDataStream &in, DocumentProcessResult &pd);
+
+#endif // DOCUMENTPROCESSRESULT_H

shared/filesaver.cpp

@@ -25,10 +25,22 @@ SaveFileResult FileSaver::addFile(QString path)
 	QString absPath = info.absoluteFilePath();
 
 	auto mtime = info.lastModified().toSecsSinceEpoch();
-	if(this->dbService->fileExistsInDatabase(absPath, mtime))
+
+	bool exists = false;
+	if(this->fileSaverOptions.fillExistingContentless)
+	{
+		exists = this->dbService->fileExistsInDatabase(absPath, mtime, 'c');
+	}
+	else
+	{
+		exists = this->dbService->fileExistsInDatabase(absPath, mtime);
+	}
+
+	if(exists)
 	{
 		return SKIPPED;
 	}
+
 	return saveFile(info);
 }
 
@@ -38,18 +50,17 @@ SaveFileResult FileSaver::updateFile(QString path)
 	return saveFile(info);
 }
 
-int FileSaver::addFiles(const QVector<QString> paths, bool keepGoing, bool verbose)
+int FileSaver::addFiles(const QVector<QString> paths)
 {
-	return processFiles(paths, std::bind(&FileSaver::addFile, this, std::placeholders::_1), keepGoing, verbose);
+	return processFiles(paths, std::bind(&FileSaver::addFile, this, std::placeholders::_1));
 }
 
-int FileSaver::updateFiles(const QVector<QString> paths, bool keepGoing, bool verbose)
+int FileSaver::updateFiles(const QVector<QString> paths)
 {
-	return processFiles(paths, std::bind(&FileSaver::updateFile, this, std::placeholders::_1), keepGoing, verbose);
+	return processFiles(paths, std::bind(&FileSaver::updateFile, this, std::placeholders::_1));
 }
 
-int FileSaver::processFiles(const QVector<QString> paths, std::function<SaveFileResult(QString path)> saverFunc,
-							bool keepGoing, bool verbose)
+int FileSaver::processFiles(const QVector<QString> paths, std::function<SaveFileResult(QString path)> saverFunc)
 {
 	std::atomic<bool> terminate{false};
 	std::atomic<int> processedCount{0};
@@ -60,7 +71,7 @@ int FileSaver::processFiles(const QVector<QString> paths, std::function<SaveFile
 								  {
 									  return;
 								  }
-								  if(verbose)
+								  if(this->fileSaverOptions.verbose)
 								  {
 									  Logger::info() << "Processing " << path << Qt::endl;
 								  }
@@ -68,7 +79,7 @@ int FileSaver::processFiles(const QVector<QString> paths, std::function<SaveFile
 								  if(result == DBFAIL || result == PROCESSFAIL)
 								  {
 									  Logger::error() << "Failed to process " << path << Qt::endl;
-									  if(!keepGoing)
+									  if(!this->fileSaverOptions.keepGoing)
 									  {
 										  terminate = true;
 									  }
@@ -76,7 +87,7 @@ int FileSaver::processFiles(const QVector<QString> paths, std::function<SaveFile
 								  else
 								  {
 									  ++processedCount;
-									  if(verbose)
+									  if(this->fileSaverOptions.verbose)
 									  {
 										  if(result == SKIPPED)
 										  {
@@ -99,7 +110,7 @@ int FileSaver::processFiles(const QVector<QString> paths, std::function<SaveFile
 
 SaveFileResult FileSaver::saveFile(const QFileInfo &fileInfo)
 {
-	QVector<PageData> pageData;
+	DocumentProcessResult processResult;
 	QString canonicalPath = fileInfo.canonicalFilePath();
 
 	int processorReturnCode = -1;
@@ -120,11 +131,26 @@ SaveFileResult FileSaver::saveFile(const QFileInfo &fileInfo)
 		{
 			if(canonicalPath.startsWith(excludedPath))
 			{
+				if(this->fileSaverOptions.verbose)
+				{
+					Logger::info() << "Skipped due to excluded path";
+				}
 				return SKIPPED;
 			}
 		}
 
-		if(fileInfo.size() > 0)
+		bool mustFillContent = this->fileSaverOptions.fillExistingContentless;
+		if(!mustFillContent)
+		{
+			mustFillContent = !this->fileSaverOptions.metadataOnly;
+			if(mustFillContent)
+			{
+				auto filetype = this->dbService->queryFileType(fileInfo.absolutePath());
+				mustFillContent = !filetype.has_value() || filetype.value() == 'c';
+			}
+		}
+
+		if(fileInfo.size() > 0 && mustFillContent)
 		{
 			QProcess process;
 			QStringList args;
@@ -143,11 +169,10 @@ SaveFileResult FileSaver::saveFile(const QFileInfo &fileInfo)
 			 * finishes.
 			 */
 			QDataStream in(process.readAllStandardOutput());
-			while(!in.atEnd())
+
+			if(!in.atEnd())
 			{
-				PageData pd;
-				in >> pd;
-				pageData.append(pd);
+				in >> processResult;
 			}
 			processorReturnCode = process.exitCode();
 			if(processorReturnCode != OK && processorReturnCode != OK_WASEMPTY)
@@ -159,7 +184,7 @@ SaveFileResult FileSaver::saveFile(const QFileInfo &fileInfo)
 			}
 		}
 	}
-	SaveFileResult result = this->dbService->saveFile(fileInfo, pageData);
+	SaveFileResult result = this->dbService->saveFile(fileInfo, processResult, this->fileSaverOptions.metadataOnly);
 	if(result == OK && processorReturnCode == OK_WASEMPTY)
 	{
 		return OK_WASEMPTY;

shared/filesaver.h

@@ -2,6 +2,7 @@
 #define FILESAVER_H
 #include <QSqlDatabase>
 #include <QFileInfo>
+#include "filesaveroptions.h"
 #include "pagedata.h"
 #include "filedata.h"
 #include "sqlitedbservice.h"
@@ -11,16 +12,21 @@ class FileSaver
   private:
 	SqliteDbService *dbService;
 	QStringList excludedPaths = Common::excludedPaths();
+	FileSaverOptions fileSaverOptions;
 
   public:
 	FileSaver(SqliteDbService &dbService);
 	SaveFileResult addFile(QString path);
 	SaveFileResult updateFile(QString path);
 	SaveFileResult saveFile(const QFileInfo &fileInfo);
-	int processFiles(const QVector<QString> paths, std::function<SaveFileResult(QString path)> saverFunc,
-					 bool keepGoing, bool verbose);
-	int addFiles(const QVector<QString> paths, bool keepGoing, bool verbose);
-	int updateFiles(const QVector<QString> paths, bool keepGoing, bool verbose);
+	int processFiles(const QVector<QString> paths, std::function<SaveFileResult(QString path)> saverFunc);
+	int addFiles(const QVector<QString> paths);
+	int updateFiles(const QVector<QString> paths);
+
+	void setFileSaverOptions(FileSaverOptions options)
+	{
+		this->fileSaverOptions = options;
+	}
 };
 
 #endif // FILESAVER_H

shared/filesaveroptions.h

@@ -0,0 +1,14 @@
+#ifndef FILESAVEROPTIONS_H
+#define FILESAVEROPTIONS_H
+
+class FileSaverOptions
+{
+  public:
+	bool verbose = false;
+	bool keepGoing = false;
+	bool metadataOnly = false;
+	/* Whether those previously explicitly without content should be filled */
+	bool fillExistingContentless = false;
+};
+
+#endif // FILESAVEROPTIONS_H

shared/filescanworker.cpp

@@ -12,6 +12,7 @@ FileScanWorker::FileScanWorker(SqliteDbService &db, ConcurrentQueue<QString> &qu
 void FileScanWorker::run()
 {
 	FileSaver saver{*this->dbService};
+	saver.setFileSaverOptions(this->fileSaverOptions);
 	auto paths = queue->dequeue(batchsize);
 	for(QString &path : paths)
 	{
@@ -20,11 +21,18 @@ void FileScanWorker::run()
 		{
 			sfr = saver.addFile(path);
 		}
+		catch(LooqsGeneralException &e)
+		{
+			Logger::error() << e.message << Qt::endl;
+			sfr = PROCESSFAIL;
+		}
+
 		catch(std::exception &e)
 		{
-			Logger::error() << e.what();
+			Logger::error() << e.what() << Qt::endl;
 			sfr = PROCESSFAIL; // well...
 		}
+
 		emit result({path, sfr});
 		if(stopToken->load(std::memory_order_relaxed)) // TODO: relaxed should suffice here, but recheck
 		{
@@ -34,3 +42,8 @@ void FileScanWorker::run()
 	}
 	emit finished();
 }
+
+void FileScanWorker::setFileSaverOptions(FileSaverOptions options)
+{
+	this->fileSaverOptions = options;
+}

shared/filescanworker.h

@@ -15,12 +15,14 @@ class FileScanWorker : public QObject, public QRunnable
   protected:
 	SqliteDbService *dbService;
 	ConcurrentQueue<QString> *queue;
+	FileSaverOptions fileSaverOptions;
 	int batchsize;
 	std::atomic<bool> *stopToken;
 
   public:
 	FileScanWorker(SqliteDbService &db, ConcurrentQueue<QString> &queue, int batchsize, std::atomic<bool> &stopToken);
 	void run() override;
+	void setFileSaverOptions(FileSaverOptions options);
   signals:
 	void result(FileScanResult);
 	void finished();

shared/indexer.cpp

@@ -30,7 +30,7 @@ void Indexer::beginIndexing()
 			pattern += "/";
 		}
 		pattern += "*";
-		ignoreList.append(excludedPath);
+		ignoreList.append(pattern);
 	}
 	ignoreList.append(this->ignorePattern);
 	wildcardMatcher.setPatterns(ignoreList);
@@ -73,16 +73,6 @@ void Indexer::setTargetPaths(QVector<QString> pathsToScan)
 	this->pathsToScan = pathsToScan;
 }
 
-void Indexer::setVerbose(bool verbose)
-{
-	this->verbose = verbose;
-}
-
-void Indexer::setKeepGoing(bool keepGoing)
-{
-	this->keepGoing = keepGoing;
-}
-
 void Indexer::requestCancellation()
 {
 	this->dirScanner->cancel();
@@ -108,6 +98,7 @@ void Indexer::launchWorker(ConcurrentQueue<QString> &queue, int batchsize)
 	FileScanWorker *runnable = new FileScanWorker(*this->db, queue, batchsize, this->workerCancellationToken);
 	connect(runnable, &FileScanWorker::result, this, &Indexer::processFileScanResult);
 	connect(runnable, &FileScanWorker::finished, this, &Indexer::processFinishedWorker);
+	runnable->setFileSaverOptions(this->fileSaverOptions);
 	++this->runningWorkers;
 	QThreadPool::globalInstance()->start(runnable);
 }
@@ -120,24 +111,6 @@ void Indexer::dirScanProgress(int current, int total)
 
 void Indexer::processFileScanResult(FileScanResult result)
 {
-	if(isErrorSaveFileResult(result.second))
-	{
-		this->currentIndexResult.results.append(result);
-		if(!keepGoing)
-		{
-			this->requestCancellation();
-			emit finished();
-			return;
-		}
-	}
-	else
-	{
-		if(verbose)
-		{
-			this->currentIndexResult.results.append(result);
-		}
-	}
-
 	/* TODO: OK_WASEMPTY might need a special list */
 	if(result.second == OK || result.second == OK_WASEMPTY)
 	{
@@ -152,12 +125,32 @@ void Indexer::processFileScanResult(FileScanResult result)
 		++this->currentIndexResult.erroredPaths;
 	}
 
-	if(currentScanProcessedCount++ == progressReportThreshold)
+	if(isErrorSaveFileResult(result.second))
+	{
+		this->currentIndexResult.results.append(result);
+		if(!this->fileSaverOptions.keepGoing)
+		{
+			this->requestCancellation();
+			emit finished();
+			return;
+		}
+	}
+	else
+	{
+		if(this->fileSaverOptions.verbose)
+		{
+			this->currentIndexResult.results.append(result);
+		}
+	}
+
+	QTime currentTime = QTime::currentTime();
+	if(currentScanProcessedCount++ == progressReportThreshold || this->lastProgressReportTime.secsTo(currentTime) >= 10)
 	{
 		emit indexProgress(this->currentIndexResult.total(), this->currentIndexResult.addedPaths,
 						   this->currentIndexResult.skippedPaths, this->currentIndexResult.erroredPaths,
 						   this->dirScanner->pathCount());
 		currentScanProcessedCount = 0;
+		this->lastProgressReportTime = currentTime;
 	}
 }
 
@@ -170,6 +163,17 @@ void Indexer::processFinishedWorker()
 	--this->runningWorkers;
 	if(!isRunning())
 	{
+		this->db->runWalCheckpoint();
 		emit finished();
 	}
 }
+
+void Indexer::setFileSaverOptions(FileSaverOptions options)
+{
+	this->fileSaverOptions = options;
+}
+
+void Indexer::setProgressReportThreshold(int threshold)
+{
+	this->progressReportThreshold = threshold;
+}

shared/indexer.h

@@ -52,8 +52,7 @@ class Indexer : public QObject
 {
 	Q_OBJECT
   protected:
-	bool verbose = false;
-	bool keepGoing = true;
+	FileSaverOptions fileSaverOptions;
 	SqliteDbService *db;
 
 	int progressReportThreshold = 50;
@@ -72,14 +71,18 @@ class Indexer : public QObject
 	IndexResult currentIndexResult;
 	void launchWorker(ConcurrentQueue<QString> &queue, int batchsize);
 
+	QTime lastProgressReportTime = QTime::currentTime();
+
   public:
 	bool isRunning();
 
 	void beginIndexing();
 	void setIgnorePattern(QStringList ignorePattern);
 	void setTargetPaths(QVector<QString> pathsToScan);
-	void setVerbose(bool verbose);
-	void setKeepGoing(bool keepGoing);
+
+	void setFileSaverOptions(FileSaverOptions options);
+
+	void setProgressReportThreshold(int threshold);
 
 	void requestCancellation();
 

shared/indexsyncer.cpp

@@ -7,21 +7,16 @@ IndexSyncer::IndexSyncer(SqliteDbService &dbService)
 	this->dbService = &dbService;
 }
 
+void IndexSyncer::setFileSaverOptions(FileSaverOptions options)
+{
+	fileSaverOptions = options;
+}
+
 void IndexSyncer::setDryRun(bool dryRun)
 {
 	this->dryRun = dryRun;
 }
 
-void IndexSyncer::setVerbose(bool verbose)
-{
-	this->verbose = verbose;
-}
-
-void IndexSyncer::setKeepGoing(bool keepGoing)
-{
-	this->keepGoing = keepGoing;
-}
-
 void IndexSyncer::setRemoveDeletedFromIndex(bool removeDeletedFromIndex)
 {
 	this->removeDeletedFromIndex = removeDeletedFromIndex;
@@ -35,7 +30,7 @@ void IndexSyncer::setPattern(QString pattern)
 void IndexSyncer::sync()
 {
 	this->stopToken.store(false, std::memory_order_relaxed);
-	FileSaver saver(*this->dbService);
+
 	QVector<FileData> files;
 	int offset = 0;
 	int limit = 10000;
@@ -87,7 +82,7 @@ void IndexSyncer::sync()
 						if(!this->dbService->deleteFile(fileData.absPath))
 						{
 							emit error("Error: Failed to delete " + fileData.absPath + " from the index");
-							if(!this->keepGoing)
+							if(!this->fileSaverOptions.keepGoing)
 							{
 								emit finished(totalUpdatesFilesCount, totalDeletedFilesCount, totalErroredFilesCount);
 								return;
@@ -104,16 +99,18 @@ void IndexSyncer::sync()
 			}
 		}
 
-		unsigned int updatedFilesCount = saver.updateFiles(filePathsToUpdate, keepGoing, verbose);
+		FileSaver saver(*this->dbService);
+		saver.setFileSaverOptions(this->fileSaverOptions);
+		unsigned int updatedFilesCount = saver.updateFiles(filePathsToUpdate);
 		unsigned int shouldHaveUpdatedCount = static_cast<unsigned int>(filePathsToUpdate.size());
 		if(updatedFilesCount != shouldHaveUpdatedCount)
 		{
 
 			totalErroredFilesCount += (shouldHaveUpdatedCount - updatedFilesCount);
-			if(!keepGoing)
+			if(!this->fileSaverOptions.keepGoing)
 			{
 				QString errorMsg = QString("Failed to update all files selected for updating in this batch. Updated") +
-								   updatedFilesCount + "out of" + shouldHaveUpdatedCount + "selected for updating";
+								   QString::number(updatedFilesCount) + "out of" + QString::number(shouldHaveUpdatedCount) + "selected for updating";
 				emit error(errorMsg);
 				emit finished(totalUpdatesFilesCount, totalDeletedFilesCount, totalErroredFilesCount);
 			}

shared/indexsyncer.h

@@ -1,16 +1,15 @@
 #ifndef INDEXSYNCER_H
 #define INDEXSYNCER_H
 #include "sqlitedbservice.h"
-
+#include "filesaveroptions.h"
 class IndexSyncer : public QObject
 {
 	Q_OBJECT
   private:
 	SqliteDbService *dbService = nullptr;
-	bool keepGoing = true;
+	FileSaverOptions fileSaverOptions;
 	bool removeDeletedFromIndex = true;
 	bool dryRun = false;
-	bool verbose = false;
 	QString pattern;
 
 	std::atomic<bool> stopToken{false};
@@ -18,12 +17,12 @@ class IndexSyncer : public QObject
   public:
 	IndexSyncer(SqliteDbService &dbService);
 
+	void setFileSaverOptions(FileSaverOptions options);
+
   public slots:
 	void sync();
 	void cancel();
 	void setDryRun(bool dryRun);
-	void setVerbose(bool verbose);
-	void setKeepGoing(bool keepGoing);
 	void setRemoveDeletedFromIndex(bool removeDeletedFromIndex);
 	void setPattern(QString pattern);
 

shared/looqsquery.cpp

@@ -7,6 +7,7 @@
 #include <optional>
 #include <algorithm>
 #include "looqsquery.h"
+#include "looqsgeneralexception.h"
 
 const QVector<Token> &LooqsQuery::getTokens() const
 {
@@ -28,6 +29,11 @@ bool LooqsQuery::hasContentSearch() const
 	return (this->getTokensMask() & FILTER_CONTENT) == FILTER_CONTENT;
 }
 
+bool LooqsQuery::hasOutlineSearch() const
+{
+	return (this->getTokensMask() & FILTER_OUTLINE_CONTAINS) == FILTER_OUTLINE_CONTAINS;
+}
+
 bool LooqsQuery::hasPathSearch() const
 {
 	return (this->getTokensMask() & FILTER_PATH) == FILTER_PATH;
@@ -180,8 +186,9 @@ LooqsQuery LooqsQuery::build(QString expression, TokenType loneWordsTokenType, b
 
 	QStringList loneWords;
 	LooqsQuery result;
-	QRegularExpression rx("((?<filtername>(\\.|\\w)+):(?<args>\\((?<innerargs>[^\\)]+)\\)|([^\\s])+)|(?<boolean>AND|OR)"
-						  "|(?<negation>!)|(?<bracket>\\(|\\))|(?<loneword>[^\\s]+))");
+	static QRegularExpression rx(
+		"((?<filtername>(\\.|\\w)+):(?<args>\\((?<innerargs>[^\\)]+)\\)|([^\\s])+)|(?<boolean>AND|OR)"
+		"|(?<negation>!)|(?<bracket>\\(|\\))|(?<loneword>[^\\s]+))");
 	QRegularExpressionMatchIterator i = rx.globalMatch(expression);
 	auto previousWasBool = [&result] { return !result.tokens.empty() && ((result.tokens.last().type & BOOL) == BOOL); };
 	auto previousWas = [&result](TokenType t) { return !result.tokens.empty() && (result.tokens.last().type == t); };
@@ -283,6 +290,14 @@ LooqsQuery LooqsQuery::build(QString expression, TokenType loneWordsTokenType, b
 			{
 				tokenType = FILTER_CONTENT_PAGE;
 			}
+			else if(filtername == "t" || filtername == "tag")
+			{
+				tokenType = FILTER_TAG_ASSIGNED;
+			}
+			else if(filtername == "toc" || filtername == "outline")
+			{
+				tokenType = FILTER_OUTLINE_CONTAINS;
+			}
 			// TODO: given this is not really a "filter", this feels slightly misplaced here
 			else if(filtername == "sort")
 			{

shared/looqsquery.h

@@ -2,7 +2,6 @@
 #define LOOQSQUERY_H
 #include <QString>
 #include <QVector>
-#include "looqsgeneralexception.h"
 #include "token.h"
 /* Fields that can be queried or sorted */
 enum QueryField
@@ -46,7 +45,7 @@ class LooqsQuery
 	void addToken(Token t);
 	void updateTokensMask()
 	{
-		for(const Token &t : tokens)
+		for(const Token &t : qAsConst(tokens))
 		{
 			this->tokensMask |= t.type;
 		}
@@ -69,6 +68,7 @@ class LooqsQuery
 		this->limit = limit;
 	}
 	bool hasContentSearch() const;
+	bool hasOutlineSearch() const;
 	bool hasPathSearch() const;
 
 	void addSortCondition(SortCondition sc);
@@ -92,14 +92,6 @@ class LooqsQuery
 		this->sortConditions = sortConditions;
 		updateTokensMask();
 	}
-
-	LooqsQuery(const LooqsQuery &o)
-	{
-		this->tokens = o.tokens;
-		this->sortConditions = o.sortConditions;
-		this->tokensMask = o.tokensMask;
-		this->limit = o.limit;
-	}
 };
 
 #endif // LOOQSQUERY_H

shared/migrations/4.sql

@@ -0,0 +1,3 @@
+CREATE VIRTUAL TABLE fts_trigram USING fts5(content, content='',tokenize="trigram");
+ALTER TABLE content ADD COLUMN fts_trigramid integer;
+CREATE INDEX content_fts_trigramid ON content (fts_trigramid);

shared/migrations/5.sql

@@ -0,0 +1,6 @@
+CREATE TABLE tag(id integer PRIMARY KEY, name varchar(128) UNIQUE);
+CREATE TABLE filetag(fileid integer, tagid integer);
+CREATE INDEX filetag_fileid ON filetag(fileid);
+CREATE INDEX tag_id ON tag(id);
+CREATE INDEX file_path ON file ( path );
+UPDATE file SET filetype='c' WHERE filetype='f';

shared/migrations/6.sql

@@ -0,0 +1,2 @@
+CREATE TABLE outline(id INTEGER PRIMARY KEY, fileid INTEGER REFERENCES file (id) ON DELETE CASCADE, text varchar(1024), page integer);
+CREATE INDEX outline_fileid ON outline (fileid);

shared/migrations/migrations.qrc

@@ -3,5 +3,8 @@
         <file>1.sql</file>
         <file>2.sql</file>
         <file>3.sql</file>
+        <file>4.sql</file>
+        <file>5.sql</file>
+        <file>6.sql</file>
     </qresource>
 </RCC>

shared/nothingprocessor.h

@@ -10,7 +10,7 @@ class NothingProcessor : public Processor
 	NothingProcessor();
 
   public:
-	QVector<PageData> process(const QByteArray &data) const override
+	DocumentProcessResult process(const QByteArray & /*data*/) const override
 	{
 		return {};
 	}

shared/odtprocessor.cpp

@@ -3,12 +3,12 @@
 #include "odtprocessor.h"
 #include "tagstripperprocessor.h"
 
-QVector<PageData> OdtProcessor::process(const QByteArray &data) const
+DocumentProcessResult OdtProcessor::process(const QByteArray & /*data*/) const
 {
 	throw LooqsGeneralException("Not implemented yet");
 }
 
-QVector<PageData> OdtProcessor::process(QString path) const
+DocumentProcessResult OdtProcessor::process(QString path) const
 {
 	QuaZipFile zipFile(path);
 	zipFile.setFileName("content.xml");

shared/odtprocessor.h

@@ -8,9 +8,9 @@ class OdtProcessor : public Processor
 	{
 		this->PREFERED_DATA_SOURCE = FILEPATH;
 	}
-	QVector<PageData> process(const QByteArray &data) const override;
+	DocumentProcessResult process(const QByteArray &data) const override;
 
-	QVector<PageData> process(QString path) const override;
+	DocumentProcessResult process(QString path) const override;
 };
 
 #endif // ODTPROCESSOR_H

shared/paralleldirscanner.cpp

@@ -1,5 +1,3 @@
-#include "paralleldirscanner.h"
-
 #include <QRunnable>
 #include <QMutex>
 #include <QDirIterator>
@@ -7,7 +5,7 @@
 #include <QThreadPool>
 #include <functional>
 #include "dirscanworker.h"
-#include "logger.h"
+#include "paralleldirscanner.h"
 
 ParallelDirScanner::ParallelDirScanner()
 {

shared/pdfprocessor.cpp

@@ -1,15 +1,35 @@
 #include <QScopedPointer>
-#include <poppler-qt5.h>
 #include "pdfprocessor.h"
 PdfProcessor::PdfProcessor()
 {
 }
 
-QVector<PageData> PdfProcessor::process(const QByteArray &data) const
+QVector<DocumentOutlineEntry> PdfProcessor::createOutline(const QVector<Poppler::OutlineItem> &outlineItems) const
 {
-	QVector<PageData> result;
-	QScopedPointer<Poppler::Document> doc(Poppler::Document::loadFromData(data));
-	if(doc.isNull())
+	QVector<DocumentOutlineEntry> result;
+	for(const Poppler::OutlineItem &outlineItem : outlineItems)
+	{
+		DocumentOutlineEntry documentOutlineEntry;
+		documentOutlineEntry.text = outlineItem.name();
+		documentOutlineEntry.type = OUTLINE_DESTINATION_TYPE_PAGE;
+		if(!outlineItem.destination().isNull())
+		{
+			documentOutlineEntry.destinationPage = outlineItem.destination()->pageNumber();
+		}
+		if(outlineItem.hasChildren())
+		{
+			documentOutlineEntry.children = createOutline(outlineItem.children());
+		}
+		result.append(documentOutlineEntry);
+	}
+	return result;
+}
+
+DocumentProcessResult PdfProcessor::process(const QByteArray &data) const
+{
+	DocumentProcessResult result;
+	auto doc(Poppler::Document::loadFromData(data));
+	if(!doc)
 	{
 		throw LooqsGeneralException("Failed to process pdf data");
 	}
@@ -26,12 +46,13 @@ QVector<PageData> PdfProcessor::process(const QByteArray &data) const
 	for(auto i = 0; i < pagecount; i++)
 	{
 		QString text = doc->page(i)->text(entirePage);
-		result.append({static_cast<unsigned int>(i + 1), text});
+		result.pages.append({static_cast<unsigned int>(i + 1), text});
 		/*TODO: hack, so we can fts search several words over the whole document, not just pages.
 		 * this of course uses more space and should be solved differently.
 		 */
 		entire += text;
 	}
-	result.append({0, entire});
+	result.pages.append({0, entire});
+	result.outlines = createOutline(doc->outline());
 	return result;
 }

shared/pdfprocessor.h

@@ -1,5 +1,6 @@
 #ifndef PDFPROCESSOR_H
 #define PDFPROCESSOR_H
+#include <poppler-qt6.h>
 #include "processor.h"
 class PdfProcessor : public Processor
 {
@@ -7,7 +8,8 @@ class PdfProcessor : public Processor
 	PdfProcessor();
 
   public:
-	QVector<PageData> process(const QByteArray &data) const override;
+	QVector<DocumentOutlineEntry> createOutline(const QVector<Poppler::OutlineItem> &outlineItems) const;
+	DocumentProcessResult process(const QByteArray &data) const override;
 };
 
 #endif // PDFPROCESSOR_H

shared/processor.h

@@ -2,8 +2,8 @@
 #define PROCESSOR_H
 #include <QVector>
 #include <QFile>
-#include "pagedata.h"
 #include "utils.h"
+#include "documentprocessresult.h"
 enum DataSource
 {
 	FILEPATH,
@@ -18,8 +18,8 @@ class Processor
 	 * a single file */
 	DataSource PREFERED_DATA_SOURCE = ARRAY;
 	Processor();
-	virtual QVector<PageData> process(const QByteArray &data) const = 0;
-	virtual QVector<PageData> process(QString path) const
+	virtual DocumentProcessResult process(const QByteArray &data) const = 0;
+	virtual DocumentProcessResult process(QString path) const
 	{
 		return process(Utils::readFile(path));
 	}

shared/sandboxedprocessor.cpp

@@ -65,18 +65,12 @@ void SandboxedProcessor::enableSandbox(QString readablePath)
 	exile_free_policy(policy);
 }
 
-void SandboxedProcessor::printResults(const QVector<PageData> &pageData)
+void SandboxedProcessor::printResults(const DocumentProcessResult &result)
 {
 	QFile fsstdout;
 	fsstdout.open(stdout, QIODevice::WriteOnly);
 	QDataStream stream(&fsstdout);
-
-	for(const PageData &data : pageData)
-	{
-		stream << data;
-		// fsstdout.flush();
-	}
-
+	stream << result;
 	fsstdout.close();
 }
 
@@ -102,7 +96,7 @@ SaveFileResult SandboxedProcessor::process()
 		return OK;
 	}
 
-	QVector<PageData> pageData;
+	DocumentProcessResult processResult;
 	QString absPath = fileInfo.absoluteFilePath();
 
 	try
@@ -111,13 +105,13 @@ SaveFileResult SandboxedProcessor::process()
 		{
 			/* Read access to FS needed... doh..*/
 			enableSandbox(absPath);
-			pageData = processor->process(absPath);
+			processResult = processor->process(absPath);
 		}
 		else
 		{
 			QByteArray data = Utils::readFile(absPath);
 			enableSandbox();
-			pageData = processor->process(data);
+			processResult = processor->process(data);
 		}
 	}
 	catch(LooqsGeneralException &e)
@@ -126,6 +120,6 @@ SaveFileResult SandboxedProcessor::process()
 		return PROCESSFAIL;
 	}
 
-	printResults(pageData);
-	return pageData.isEmpty() ? OK_WASEMPTY : OK;
+	printResults(processResult);
+	return processResult.pages.isEmpty() ? OK_WASEMPTY : OK;
 }

shared/sandboxedprocessor.h

@@ -2,7 +2,7 @@
 #define SANDBOXEDPROCESSOR_H
 #include <QString>
 #include <QMimeDatabase>
-#include "pagedata.h"
+#include "documentprocessresult.h"
 #include "savefileresult.h"
 
 class SandboxedProcessor
@@ -12,7 +12,7 @@ class SandboxedProcessor
 	QMimeDatabase mimeDatabase;
 
 	void enableSandbox(QString readablePath = "");
-	void printResults(const QVector<PageData> &pageData);
+	void printResults(const DocumentProcessResult &pageData);
 
   public:
 	SandboxedProcessor(QString filepath)

shared/shared.pro

@@ -14,11 +14,11 @@ CONFIG += staticlib
 CONFIG += c++17
 
 INCLUDEPATH += $$PWD/../sandbox/exile.h/
-INCLUDEPATH += /usr/include/poppler/qt5/ /usr/include/quazip5
+INCLUDEPATH += /usr/include/poppler/qt6/ /usr/include/quazip5
 
 # Dirty, we only need the includes here but well this magic works, so...
-packagesExist(quazip1-qt5) {
-       PKGCONFIG += quazip1-qt5
+packagesExist(quazip1-qt6) {
+       PKGCONFIG += quazip1-qt6
        CONFIG += link_pkgconfig
 }
 
@@ -42,6 +42,8 @@ SOURCES += sqlitesearch.cpp \
     dbmigrator.cpp \
     defaulttextprocessor.cpp \
     dirscanworker.cpp \
+    documentoutlineentry.cpp \
+    documentprocessresult.cpp \
     encodingdetector.cpp \
     filesaver.cpp \
     filescanworker.cpp \
@@ -60,6 +62,7 @@ SOURCES += sqlitesearch.cpp \
     processor.cpp \
     sandboxedprocessor.cpp \
     sqlitedbservice.cpp \
+    tagmanager.cpp \
     tagstripperprocessor.cpp \
     utils.cpp \
     ../submodules/exile.h/exile.c \
@@ -71,9 +74,12 @@ HEADERS += sqlitesearch.h \
     dbmigrator.h \
     defaulttextprocessor.h \
     dirscanworker.h \
+    documentoutlineentry.h \
+    documentprocessresult.h \
     encodingdetector.h \
     filedata.h \
     filesaver.h \
+    filesaveroptions.h \
     filescanworker.h \
     indexer.h \
     indexsyncer.h \
@@ -92,6 +98,7 @@ HEADERS += sqlitesearch.h \
     savefileresult.h \
     searchresult.h \
     sqlitedbservice.h \
+    tagmanager.h \
     tagstripperprocessor.h \
     token.h \
     common.h \

shared/sqlitedbservice.cpp

@@ -2,25 +2,11 @@
 #include <QFileInfo>
 #include <QDateTime>
 #include <QSqlError>
+#include <QRegularExpression>
+#include "looqsgeneralexception.h"
 #include "sqlitedbservice.h"
 #include "filedata.h"
 #include "logger.h"
-bool SqliteDbService::fileExistsInDatabase(QString path, qint64 mtime)
-{
-	auto query = QSqlQuery(dbFactory->forCurrentThread());
-	query.prepare("SELECT 1 FROM file WHERE path = ? and mtime = ?");
-	query.addBindValue(path);
-	query.addBindValue(mtime);
-	if(!query.exec())
-	{
-		throw LooqsGeneralException("Error while trying to query for file existance: " + query.lastError().text());
-	}
-	if(!query.next())
-	{
-		return false;
-	}
-	return query.value(0).toBool();
-}
 
 QVector<SearchResult> SqliteDbService::search(const LooqsQuery &query)
 {
@@ -29,20 +15,29 @@ QVector<SearchResult> SqliteDbService::search(const LooqsQuery &query)
 	return searcher.search(query);
 }
 
-bool SqliteDbService::fileExistsInDatabase(QString path)
+std::optional<QChar> SqliteDbService::queryFileType(QString absPath)
 {
-	auto query = QSqlQuery(dbFactory->forCurrentThread());
-	query.prepare("SELECT 1 FROM file WHERE path = ?");
-	query.addBindValue(path);
-	if(!query.exec())
-	{
-		throw LooqsGeneralException("Error while trying to query for file existance: " + query.lastError().text());
-	}
+	auto query = exec("SELECT filetype FROM file WHERE path = ?", {absPath});
 	if(!query.next())
 	{
-		return false;
+		return {};
 	}
-	return query.value(0).toBool();
+	return query.value(0).toChar();
+}
+
+bool SqliteDbService::fileExistsInDatabase(QString path)
+{
+	return execBool("SELECT 1 FROM file WHERE path = ?", {path});
+}
+
+bool SqliteDbService::fileExistsInDatabase(QString path, qint64 mtime)
+{
+	return execBool("SELECT 1 FROM file WHERE path = ? AND mtime = ?", {path, mtime});
+}
+
+bool SqliteDbService::fileExistsInDatabase(QString path, qint64 mtime, QChar fileType)
+{
+	return execBool("SELECT 1 FROM file WHERE path = ? AND mtime = ? AND filetype = ?", {path, mtime, fileType});
 }
 
 SqliteDbService::SqliteDbService(DatabaseFactory &dbFactory)
@@ -87,16 +82,14 @@ unsigned int SqliteDbService::getFiles(QVector<FileData> &results, QString wildC
 		throw LooqsGeneralException("Error while trying to retrieve files from database: " + query.lastError().text());
 	}
 
-	// TODO: port this to QRegularExpression once >5.12 gets more widespread because of this bug
-	// https://bugreports.qt.io/browse/QTBUG-72539?focusedCommentId=439053&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel
 	bool usePattern = !wildCardPattern.isEmpty();
-	QRegExp regexPattern(wildCardPattern);
-	regexPattern.setPatternSyntax(QRegExp::PatternSyntax::WildcardUnix);
+	QString regex = QRegularExpression::wildcardToRegularExpression(wildCardPattern, QRegularExpression::UnanchoredWildcardConversion);
+	QRegularExpression regexPattern(regex);
 
 	while(query.next())
 	{
 		QString absPath = query.value(0).toString();
-		if(!usePattern || regexPattern.exactMatch(absPath))
+		if(!usePattern || regexPattern.match(absPath).hasMatch())
 		{
 			FileData current;
 			current.absPath = absPath;
@@ -110,11 +103,262 @@ unsigned int SqliteDbService::getFiles(QVector<FileData> &results, QString wildC
 	return processedRows;
 }
 
-SaveFileResult SqliteDbService::saveFile(QFileInfo fileInfo, QVector<PageData> &pageData)
+QVector<QString> SqliteDbService::getTags()
+{
+	QVector<QString> result;
+	auto query = QSqlQuery(dbFactory->forCurrentThread());
+	query.prepare("SELECT name FROM tag ORDER by name ASC");
+	query.setForwardOnly(true);
+	if(!query.exec())
+	{
+		throw LooqsGeneralException("Error while trying to retrieve tags from database: " + query.lastError().text());
+	}
+	while(query.next())
+	{
+		QString tagname = query.value(0).toString();
+		result.append(tagname);
+	}
+	return result;
+}
+
+QVector<QString> SqliteDbService::getTagsForPath(QString path)
+{
+	QVector<QString> result;
+	auto query = QSqlQuery(dbFactory->forCurrentThread());
+	query.prepare("SELECT name FROM tag INNER JOIN filetag ON tag.id = filetag.tagid INNER JOIN file ON filetag.fileid "
+				  "= file.id WHERE file.path = ? ORDER BY name ASC");
+	query.addBindValue(path);
+	query.setForwardOnly(true);
+	if(!query.exec())
+	{
+		throw LooqsGeneralException("Error while trying to retrieve tags from database: " + query.lastError().text());
+	}
+	while(query.next())
+	{
+		QString tagname = query.value(0).toString();
+		result.append(tagname);
+	}
+	return result;
+}
+
+QVector<QString> SqliteDbService::getPathsForTag(QString tag)
+{
+	QVector<QString> result;
+	auto query = QSqlQuery(dbFactory->forCurrentThread());
+	query.prepare(
+		"SELECT file.path FROM tag INNER JOIN filetag ON tag.id = filetag.tagid INNER JOIN file ON filetag.fileid "
+		"= file.id WHERE tag.name = ?");
+	query.addBindValue(tag.toLower());
+	query.setForwardOnly(true);
+	if(!query.exec())
+	{
+		throw LooqsGeneralException("Error while trying to retrieve paths from database: " + query.lastError().text());
+	}
+	while(query.next())
+	{
+		QString path = query.value(0).toString();
+		result.append(path);
+	}
+	return result;
+}
+
+bool SqliteDbService::setTags(QString path, const QSet<QString> &tags)
+{
+	QSqlDatabase db = dbFactory->forCurrentThread();
+	if(!this->beginTransaction(db))
+	{
+		Logger::error() << "Failed to open transaction for " << path << " : " << db.lastError() << Qt::endl;
+		return false;
+	}
+
+	QSqlQuery deletionQuery = QSqlQuery(db);
+	deletionQuery.prepare("DELETE FROM filetag WHERE fileid = (SELECT id FROM file WHERE path = ?)");
+	deletionQuery.addBindValue(path);
+	if(!deletionQuery.exec())
+	{
+		db.rollback();
+		Logger::error() << "Failed to delete existing tags " << deletionQuery.lastError() << Qt::endl;
+		return false;
+	}
+
+	deletionQuery.finish();
+
+	for(const QString &tag : tags)
+	{
+		QSqlQuery tagQuery = QSqlQuery(db);
+		tagQuery.prepare("INSERT OR IGNORE INTO tag (name) VALUES(?)");
+		tagQuery.addBindValue(tag.toLower());
+		if(!tagQuery.exec())
+		{
+			db.rollback();
+			Logger::error() << "Failed to insert tag " << tagQuery.lastError() << Qt::endl;
+			return false;
+		}
+		tagQuery.finish();
+		QSqlQuery fileTagQuery(db);
+		fileTagQuery.prepare(
+			"INSERT INTO filetag(fileid, tagid) VALUES((SELECT id FROM file WHERE path = ?), (SELECT id "
+			"FROM tag WHERE name = ?))");
+		fileTagQuery.bindValue(0, path);
+		fileTagQuery.bindValue(1, tag);
+		if(!fileTagQuery.exec())
+		{
+			db.rollback();
+			Logger::error() << "Failed to assign tag to file" << Qt::endl;
+			return false;
+		}
+		fileTagQuery.finish();
+	}
+	if(!this->commitTransaction(db))
+	{
+		db.rollback();
+		Logger::error() << "Failed to commit transaction when saving tags" << Qt::endl;
+		return false;
+	}
+	return true;
+}
+
+bool SqliteDbService::insertToFTS(bool useTrigrams, QSqlDatabase &db, int fileid, QVector<PageData> &pageData)
+{
+	QString ftsInsertStatement;
+	QString contentInsertStatement;
+	if(useTrigrams)
+	{
+		ftsInsertStatement = "INSERT INTO fts_trigram(content) VALUES(?)";
+		contentInsertStatement = "INSERT INTO content(fileid, page, fts_trigramid) VALUES(?, ?, last_insert_rowid())";
+	}
+	else
+	{
+		ftsInsertStatement = "INSERT INTO fts(content) VALUES(?)";
+		contentInsertStatement = "INSERT INTO content(fileid, page, ftsid) VALUES(?, ?, last_insert_rowid())";
+	}
+
+	for(const PageData &data : pageData)
+	{
+		QSqlQuery ftsQuery(db);
+		ftsQuery.prepare(ftsInsertStatement);
+		ftsQuery.addBindValue(data.content);
+		if(!ftsQuery.exec())
+		{
+			Logger::error() << "Failed fts insertion " << ftsQuery.lastError() << Qt::endl;
+			return false;
+		}
+		ftsQuery.finish();
+		QSqlQuery contentQuery(db);
+		contentQuery.prepare(contentInsertStatement);
+		contentQuery.addBindValue(fileid);
+		contentQuery.addBindValue(data.pagenumber);
+		if(!contentQuery.exec())
+		{
+			Logger::error() << "Failed content insertion " << contentQuery.lastError() << Qt::endl;
+			return false;
+		}
+		contentQuery.finish();
+	}
+	return true;
+}
+
+bool SqliteDbService::insertOutline(QSqlDatabase &db, int fileid, const QVector<DocumentOutlineEntry> &outlines)
+{
+	QSqlQuery outlineQuery(db);
+	outlineQuery.prepare("INSERT INTO outline(fileid, text, page) VALUES(?,?,?)");
+	outlineQuery.addBindValue(fileid);
+	for(const DocumentOutlineEntry &outline : outlines)
+	{
+		QString text = outline.text.trimmed();
+		if(text.length() > 0)
+		{
+			text = text.toLower();
+
+			outlineQuery.bindValue(1, text);
+			outlineQuery.bindValue(2, outline.destinationPage);
+			if(!outlineQuery.exec())
+			{
+				Logger::error() << "Failed outline insertion " << outlineQuery.lastError() << Qt::endl;
+				return false;
+			}
+			outlineQuery.finish();
+			if(!insertOutline(db, fileid, outline.children))
+			{
+				Logger::error() << "Failed outline insertion (children)) " << outlineQuery.lastError() << Qt::endl;
+				return false;
+			}
+		}
+	}
+	return true;
+}
+
+bool SqliteDbService::runWalCheckpoint()
+{
+	auto query = QSqlQuery(dbFactory->forCurrentThread());
+	return query.exec("PRAGMA wal_checkpoint(TRUNCATE);");
+}
+
+QSqlQuery SqliteDbService::exec(QString querystr, std::initializer_list<QVariant> args)
+{
+	auto query = QSqlQuery(dbFactory->forCurrentThread());
+	query.prepare(querystr);
+	for(const QVariant &v : args)
+	{
+		query.addBindValue(v);
+	}
+	if(!query.exec())
+	{
+		throw LooqsGeneralException("Error while exec(): " + query.lastError().text() + " for query: " + querystr);
+	}
+	return query;
+}
+
+bool SqliteDbService::execBool(QString querystr, std::initializer_list<QVariant> args)
+{
+	auto query = exec(querystr, args);
+	if(!query.next())
+	{
+		return false;
+	}
+	return query.value(0).toBool();
+}
+
+/*
+ *  The default only opens BEGIN TRANSACTION, but for multi-threaded, IMMEDIATE TRANSACTION is the more reasonable choice */
+bool SqliteDbService::beginTransaction(QSqlDatabase &db)
+{
+	QSqlQuery query(db);
+	if(!query.exec("BEGIN IMMEDIATE TRANSACTION"))
+	{
+		Logger::error() << "Immediate transaction could not be acquired" << query.lastError() << Qt::endl;
+		/* TODO: handle maybe the busy time out here */
+		return false;
+	}
+	return true;
+}
+
+bool SqliteDbService::commitTransaction(QSqlDatabase &db)
+{
+	QSqlQuery query(db);
+	if(!query.exec("COMMIT TRANSACTION"))
+	{
+		Logger::error() << "Transaction failed to commit" << Qt::endl;
+		/* TODO: handle maybe the busy time out here */
+		return false;
+	}
+	return true;
+}
+
+SaveFileResult SqliteDbService::saveFile(QFileInfo fileInfo, DocumentProcessResult &processResult, bool pathsOnly)
 {
 	QString absPath = fileInfo.absoluteFilePath();
 	auto mtime = fileInfo.lastModified().toSecsSinceEpoch();
-	QChar fileType = fileInfo.isDir() ? 'd' : 'f';
+	QChar fileType = fileInfo.isDir() ? 'd' : 'c';
+	if(pathsOnly)
+	{
+		fileType = 'f';
+	}
+
+	/* Insertion can take a long time and other threads can be be busy... we are not guaranteed to get a lock for the transaction.
+	 *  Don't want to set the sqlite busy handler to eternity. */
+	QMutexLocker lock(&this->writeMutex);
+
 
 	QSqlDatabase db = dbFactory->forCurrentThread();
 	QSqlQuery delQuery(db);
@@ -128,7 +372,7 @@ SaveFileResult SqliteDbService::saveFile(QFileInfo fileInfo, QVector<PageData> &
 	inserterQuery.addBindValue(fileInfo.size());
 	inserterQuery.addBindValue(fileType);
 
-	if(!db.transaction())
+	if(!this->beginTransaction(db))
 	{
 		Logger::error() << "Failed to open transaction for " << absPath << " : " << db.lastError() << Qt::endl;
 		return DBFAIL;
@@ -140,6 +384,7 @@ SaveFileResult SqliteDbService::saveFile(QFileInfo fileInfo, QVector<PageData> &
 		db.rollback();
 		return DBFAIL;
 	}
+	delQuery.finish();
 
 	if(!inserterQuery.exec())
 	{
@@ -147,27 +392,32 @@ SaveFileResult SqliteDbService::saveFile(QFileInfo fileInfo, QVector<PageData> &
 		db.rollback();
 		return DBFAIL;
 	}
-
 	int lastid = inserterQuery.lastInsertId().toInt();
-	for(const PageData &data : pageData)
+	inserterQuery.finish();
+
+	if(!pathsOnly)
 	{
-		QSqlQuery ftsQuery(db);
-		ftsQuery.prepare("INSERT INTO fts(content) VALUES(?)");
-		ftsQuery.addBindValue(data.content);
-		ftsQuery.exec();
-		QSqlQuery contentQuery(db);
-		contentQuery.prepare("INSERT INTO content(fileid, page, ftsid) VALUES(?, ?, last_insert_rowid())");
-		contentQuery.addBindValue(lastid);
-		contentQuery.addBindValue(data.pagenumber);
-		if(!contentQuery.exec())
+		if(!insertToFTS(false, db, lastid, processResult.pages))
 		{
 			db.rollback();
-			Logger::error() << "Failed content insertion " << contentQuery.lastError() << Qt::endl;
+			Logger::error() << "Failed to insert data to FTS index " << Qt::endl;
+			return DBFAIL;
+		}
+		if(!insertToFTS(true, db, lastid, processResult.pages))
+		{
+			db.rollback();
+			Logger::error() << "Failed to insert data to FTS index " << Qt::endl;
+			return DBFAIL;
+		}
+		if(!insertOutline(db, lastid, processResult.outlines))
+		{
+			db.rollback();
+			Logger::error() << "Failed to insert outline data " << Qt::endl;
 			return DBFAIL;
 		}
 	}
 
-	if(!db.commit())
+	if(!this->commitTransaction(db))
 	{
 		db.rollback();
 		Logger::error() << "Failed to commit transaction for " << absPath << " : " << db.lastError() << Qt::endl;
@@ -175,3 +425,127 @@ SaveFileResult SqliteDbService::saveFile(QFileInfo fileInfo, QVector<PageData> &
 	}
 	return OK;
 }
+
+bool SqliteDbService::addTag(QString tag, QString path)
+{
+	QVector<QString> paths;
+	paths.append(path);
+	return addTag(tag, paths);
+}
+
+bool SqliteDbService::addTag(QString tag, const QVector<QString> &paths)
+{
+	QSqlDatabase db = dbFactory->forCurrentThread();
+	QSqlQuery tagQuery(db);
+	QSqlQuery fileTagQuery(db);
+
+	tag = tag.toLower();
+
+	tagQuery.prepare("INSERT OR IGNORE INTO tag (name) VALUES(?)");
+	tagQuery.addBindValue(tag);
+
+	fileTagQuery.prepare("INSERT INTO filetag(fileid, tagid) VALUES((SELECT id FROM file WHERE path = ?), (SELECT id "
+						 "FROM tag WHERE name = ?))");
+	fileTagQuery.bindValue(1, tag);
+	if(!this->beginTransaction(db))
+	{
+		Logger::error() << "Failed to open transaction to add paths for tag " << tag << " : " << db.lastError()
+						<< Qt::endl;
+		return false;
+	}
+	if(!tagQuery.exec())
+	{
+		db.rollback();
+		Logger::error() << "Failed INSERT query" << tagQuery.lastError() << Qt::endl;
+		return false;
+	}
+	tagQuery.finish();
+
+	for(const QString &path : paths)
+	{
+		fileTagQuery.bindValue(0, path);
+		if(!fileTagQuery.exec())
+		{
+			db.rollback();
+			Logger::error() << "Failed to add paths to tag" << Qt::endl;
+			return false;
+		}
+		fileTagQuery.finish();
+	}
+	if(!this->commitTransaction(db))
+	{
+		db.rollback();
+		Logger::error() << "Failed to commit tag insertion transaction" << db.lastError() << Qt::endl;
+		return false;
+	}
+
+	return true;
+}
+
+bool SqliteDbService::removePathsForTag(QString tag, const QVector<QString> &paths)
+{
+	QSqlDatabase db = dbFactory->forCurrentThread();
+	QSqlQuery tagQuery(db);
+	QSqlQuery fileTagQuery(db);
+
+	tag = tag.toLower();
+
+	fileTagQuery.prepare(
+		"DELETE FROM filetag WHERE fileid = (SELECT id FROM file WHERE path = ?) AND tagid = (SELECT id "
+		"FROM tag WHERE name = ?)");
+
+	fileTagQuery.bindValue(1, tag);
+	for(const QString &path : paths)
+	{
+		fileTagQuery.bindValue(0, path);
+		if(!fileTagQuery.exec())
+		{
+			Logger::error() << "An error occured while trying to remove paths from tag assignment" << Qt::endl;
+			return false;
+		}
+		fileTagQuery.finish();
+	}
+	return true;
+}
+
+bool SqliteDbService::deleteTag(QString tag)
+{
+	QSqlDatabase db = dbFactory->forCurrentThread();
+	if(!this->beginTransaction(db))
+	{
+		Logger::error() << "Failed to open transaction while trying to delete tag " << tag << " : " << db.lastError()
+						<< Qt::endl;
+		return false;
+	}
+
+	tag = tag.toLower();
+	QSqlQuery assignmentDeleteQuery(db);
+	assignmentDeleteQuery.prepare("DELETE FROM filetag WHERE tagid = (SELECT id FROM tag WHERE name = ?)");
+	assignmentDeleteQuery.addBindValue(tag);
+	if(!assignmentDeleteQuery.exec())
+	{
+		db.rollback();
+		Logger::error() << "Error while trying to delete tag: " << db.lastError() << Qt::endl;
+		return false;
+	}
+	assignmentDeleteQuery.finish();
+
+	QSqlQuery deleteTagQuery(db);
+	deleteTagQuery.prepare("DELETE FROM tag WHERE name = ?");
+	deleteTagQuery.addBindValue(tag);
+	if(!deleteTagQuery.exec())
+	{
+		db.rollback();
+		Logger::error() << "Error while trying to delete tag: " << db.lastError() << Qt::endl;
+		return false;
+	}
+	deleteTagQuery.finish();
+
+	if(!this->commitTransaction(db))
+	{
+		db.rollback();
+		Logger::error() << "Error while trying to delete tag: " << db.lastError() << Qt::endl;
+		return false;
+	}
+	return true;
+}

shared/sqlitedbservice.h

@@ -1,9 +1,12 @@
 #ifndef SQLITEDBSERVICE_H
 #define SQLITEDBSERVICE_H
 #include <QFileInfo>
+#include <QMutexLocker>
+#include <optional>
+
 #include "databasefactory.h"
 #include "utils.h"
-#include "pagedata.h"
+#include "documentprocessresult.h"
 #include "filedata.h"
 #include "../shared/sqlitesearch.h"
 #include "../shared/token.h"
@@ -13,15 +16,41 @@ class SqliteDbService
 {
   private:
 	DatabaseFactory *dbFactory = nullptr;
+	bool insertToFTS(bool useTrigrams, QSqlDatabase &db, int fileid, QVector<PageData> &pageData);
+
+	QSqlQuery exec(QString query, std::initializer_list<QVariant> args);
+	bool execBool(QString querystr, std::initializer_list<QVariant> args);
+
+	bool beginTransaction(QSqlDatabase &db);
+	bool commitTransaction(QSqlDatabase &db);
+
+	QMutex writeMutex;
 
   public:
 	SqliteDbService(DatabaseFactory &dbFactory);
-	SaveFileResult saveFile(QFileInfo fileInfo, QVector<PageData> &pageData);
-	unsigned int getFiles(QVector<FileData> &results, QString wildCardPattern, int offset, int limit);
+	SaveFileResult saveFile(QFileInfo fileInfo, DocumentProcessResult &pageData, bool pathsOnly);
+
 	bool deleteFile(QString path);
 	bool fileExistsInDatabase(QString path);
 	bool fileExistsInDatabase(QString path, qint64 mtime);
+	bool fileExistsInDatabase(QString path, qint64 mtime, QChar filetype);
+	unsigned int getFiles(QVector<FileData> &results, QString wildCardPattern, int offset, int limit);
+
+	bool addTag(QString tag, QString path);
+	bool addTag(QString tag, const QVector<QString> &paths);
+	QVector<QString> getTags();
+	QVector<QString> getTagsForPath(QString path);
+	QVector<QString> getPathsForTag(QString path);
+	bool setTags(QString path, const QSet<QString> &tags);
+	bool removePathsForTag(QString tag, const QVector<QString> &paths);
+	bool deleteTag(QString tag);
+
 	QVector<SearchResult> search(const LooqsQuery &query);
+
+	std::optional<QChar> queryFileType(QString absPath);
+	bool insertOutline(QSqlDatabase &db, int fileid, const QVector<DocumentOutlineEntry> &outlines);
+
+	bool runWalCheckpoint();
 };
 
 #endif // SQLITEDBSERVICE_H

shared/sqlitesearch.cpp

@@ -69,7 +69,7 @@ QString SqliteSearch::createSortSql(const QVector<SortCondition> sortConditions)
 QString SqliteSearch::escapeFtsArgument(QString ftsArg)
 {
 	QString result;
-	QRegularExpression extractor(R"#("([^"]*)"|([^\s]+))#");
+	static QRegularExpression extractor(R"#("([^"]*)"|([^\s]+))#");
 	QRegularExpressionMatchIterator i = extractor.globalMatch(ftsArg);
 	while(i.hasNext())
 	{
@@ -82,11 +82,10 @@ QString SqliteSearch::escapeFtsArgument(QString ftsArg)
 			{
 				value = value.mid(0, value.size() - 1);
 			}
-			result += "\"" + value + "\"*";
+			result += "\"" + value + "\"* ";
 		}
 		else
 		{
-			value = "\"\"" + value + "\"\"";
 			result += "\"" + value + "\" ";
 		}
 	}
@@ -142,48 +141,43 @@ QPair<QString, QVector<QString>> SqliteSearch::createSql(const Token &token)
 	}
 	if(token.type == FILTER_CONTENT_CONTAINS)
 	{
-		return {" content.id IN (SELECT fts.ROWID FROM fts WHERE fts.content MATCH ? ORDER BY "
-				"rank) ",
-				{escapeFtsArgument(value)}};
+		return {" fts MATCH ? ", {escapeFtsArgument(value)}};
 	}
+	if(token.type == FILTER_TAG_ASSIGNED)
+	{
+		return {" file.id IN (SELECT fileid FROM filetag WHERE tagid = (SELECT id FROM tag WHERE name = ?)) ",
+				{value.toLower()}};
+	}
+	if(token.type == FILTER_OUTLINE_CONTAINS)
+	{
+		return {" outline.text LIKE '%' || ? || '%'  ", {value.toLower()}};
+	}
+
 	throw LooqsGeneralException("Unknown token passed (should not happen)");
 }
 
 QSqlQuery SqliteSearch::makeSqlQuery(const LooqsQuery &query)
 {
 	QString whereSql;
-	QString joinSql;
 	QVector<QString> bindValues;
 	bool isContentSearch = (query.getTokensMask() & FILTER_CONTENT) == FILTER_CONTENT;
+	bool isOutlineSearch = query.hasOutlineSearch();
 	if(query.getTokens().isEmpty())
 	{
 		throw LooqsGeneralException("Nothing to search for supplied");
 	}
 
-	bool ftsAlreadyJoined = false;
 	auto tokens = query.getTokens();
 	for(const Token &token : tokens)
 	{
-		if(token.type == FILTER_CONTENT_CONTAINS)
-		{
-			if(!ftsAlreadyJoined)
-			{
-				joinSql += " INNER JOIN fts ON content.ftsid = fts.ROWID ";
-				ftsAlreadyJoined = true;
-			}
-			whereSql += " fts.content MATCH ? ";
-			bindValues.append(escapeFtsArgument(token.value));
-		}
-		else
-		{
-			auto sql = createSql(token);
-			whereSql += sql.first;
-			bindValues.append(sql.second);
-		}
+		auto sql = createSql(token);
+		whereSql += sql.first;
+		bindValues.append(sql.second);
 	}
 
 	QString prepSql;
 	QString sortSql = createSortSql(query.getSortConditions());
+	int bindIterations = 1;
 	if(isContentSearch)
 	{
 		if(sortSql.isEmpty())
@@ -191,24 +185,43 @@ QSqlQuery SqliteSearch::makeSqlQuery(const LooqsQuery &query)
 			if(std::find_if(tokens.begin(), tokens.end(),
 							[](const Token &t) -> bool { return t.type == FILTER_CONTENT_CONTAINS; }) != tokens.end())
 			{
-				sortSql = "ORDER BY rank";
+				sortSql = "ORDER BY prio, rank";
 			}
 		}
-		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 " +
-				  joinSql + " WHERE 1=1 AND " + whereSql + " " + sortSql;
+		QString whereSqlTrigram = whereSql;
+		whereSqlTrigram.replace("fts MATCH", "fts_trigram MATCH"); // A bit dirty...
+		prepSql = "SELECT DISTINCT path, page, mtime, size, filetype FROM ("
+				  "SELECT file.path AS path,  content.page AS page, file.mtime AS mtime, file.size AS size, "
+				  "file.filetype AS filetype, 0 AS prio, fts.rank AS rank FROM file INNER JOIN content ON file.id = "
+				  "content.fileid "
+				  "INNER JOIN fts ON content.ftsid = fts.ROWID WHERE 1=1 AND " +
+				  whereSql +
+				  "UNION ALL SELECT file.path AS path,  content.page AS page, file.mtime AS mtime, file.size AS size, "
+				  "file.filetype AS filetype, 1 as prio, fts_trigram.rank AS rank FROM file INNER JOIN content ON "
+				  "file.id = "
+				  "content.fileid " +
+				  "INNER JOIN fts_trigram ON content.fts_trigramid = fts_trigram.ROWID WHERE 1=1 AND " +
+				  whereSqlTrigram + " ) " + sortSql;
+		++bindIterations;
 	}
 	else
 	{
+		QString pageColumn = "'0' as page";
+		QString joiners = "";
+		if(isOutlineSearch)
+		{
+			pageColumn = "outline.page as page";
+			joiners = " INNER JOIN outline ON outline.fileid = file.id ";
+		}
 		if(sortSql.isEmpty())
 		{
 			sortSql = "ORDER BY file.mtime DESC";
 		}
-		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;
+		prepSql = "SELECT DISTINCT file.path AS path, " + pageColumn +
+				  ",file.mtime AS mtime, file.size AS size, "
+				  "file.filetype AS filetype FROM file" +
+				  joiners + " WHERE  1=1 AND " + whereSql + " " + sortSql;
 	}
-
 	if(query.getLimit() > 0)
 	{
 		prepSql += " LIMIT " + QString::number(query.getLimit());
@@ -216,11 +229,14 @@ QSqlQuery SqliteSearch::makeSqlQuery(const LooqsQuery &query)
 
 	QSqlQuery dbquery(*db);
 	dbquery.prepare(prepSql);
-	for(const QString &value : bindValues)
+	for(int i = 0; i < bindIterations; i++)
 	{
-		if(value != "")
+		for(const QString &value : bindValues)
 		{
-			dbquery.addBindValue(value);
+			if(value != "")
+			{
+				dbquery.addBindValue(value);
+			}
 		}
 	}
 	return dbquery;
@@ -239,7 +255,7 @@ QVector<SearchResult> SqliteSearch::search(const LooqsQuery &query)
 		throw LooqsGeneralException("SQL Error: " + dbQuery.lastError().text());
 	}
 
-	bool contentSearch = query.hasContentSearch();
+	bool contentSearch = query.hasContentSearch() || query.hasOutlineSearch();
 	while(dbQuery.next())
 	{
 		SearchResult result;

shared/tagmanager.cpp

@@ -0,0 +1,66 @@
+#include "tagmanager.h"
+
+TagManager::TagManager(SqliteDbService &dbService)
+{
+	this->dbService = &dbService;
+}
+
+bool TagManager::addTagsToPath(QString path, const QSet<QString> &tags)
+{
+	QVector<QString> currentTags = this->dbService->getTagsForPath(path);
+	for(const QString &tag : tags)
+	{
+		currentTags.append(tag.toLower());
+	}
+
+	QSet<QString> newTags{currentTags.begin(), currentTags.end()};
+	return this->dbService->setTags(path, newTags);
+}
+
+bool TagManager::removeTagsForPath(QString path, const QSet<QString> &tags)
+{
+	QVector<QString> currentTags = this->dbService->getTagsForPath(path);
+	for(const QString &tag : tags)
+	{
+		currentTags.removeAll(tag);
+	}
+	QSet<QString> newTags{currentTags.begin(), currentTags.end()};
+	return this->dbService->setTags(path, newTags);
+}
+
+bool TagManager::removePathsForTag(QString tag, const QVector<QString> &paths)
+{
+	return this->dbService->removePathsForTag(tag, paths);
+}
+
+bool TagManager::deleteTag(QString tag)
+{
+	return this->dbService->deleteTag(tag);
+}
+
+QVector<QString> TagManager::getTags(QString path)
+{
+	return this->dbService->getTagsForPath(path);
+}
+
+QVector<QString> TagManager::getTags()
+{
+	return this->dbService->getTags();
+}
+
+QVector<QString> TagManager::getPaths(QString tag)
+{
+	return this->dbService->getPathsForTag(tag);
+}
+
+bool TagManager::addTagsToPath(QString path, QString tagstring, QChar delim)
+{
+	auto splitted = tagstring.split(delim);
+
+	return addTagsToPath(path, QSet<QString>{splitted.begin(), splitted.end()});
+}
+
+bool TagManager::addPathsToTag(QString tag, const QVector<QString> &paths)
+{
+	return this->dbService->addTag(tag, paths);
+}

shared/tagmanager.h

@@ -0,0 +1,28 @@
+#ifndef TAGMANAGER_H
+#define TAGMANAGER_H
+#include "sqlitedbservice.h"
+
+class TagManager
+{
+  private:
+	SqliteDbService *dbService = nullptr;
+	bool ensurePathOkay(QString inpath);
+
+  public:
+	TagManager(SqliteDbService &dbService);
+
+	bool addTagsToPath(QString path, const QSet<QString> &tags);
+	bool addTagsToPath(QString path, QString tagstring, QChar delim);
+
+	bool addPathsToTag(QString tag, const QVector<QString> &paths);
+	bool removeTagsForPath(QString path, const QSet<QString> &tags);
+
+	bool removePathsForTag(QString tag, const QVector<QString> &paths);
+	bool deleteTag(QString tag);
+
+	QVector<QString> getTags(QString path);
+	QVector<QString> getTags();
+	QVector<QString> getPaths(QString tag);
+};
+
+#endif // TAGMANAGER_H

shared/tagstripperprocessor.cpp

@@ -1,14 +1,14 @@
 #include "tagstripperprocessor.h"
-
+#include <QRegularExpression>
 TagStripperProcessor::TagStripperProcessor()
 {
 }
 
-QVector<PageData> TagStripperProcessor::process(const QByteArray &data) const
+DocumentProcessResult TagStripperProcessor::process(const QByteArray &data) const
 {
 	auto result = DefaultTextProcessor::process(data);
 	// TODO: does not work properly with <br> and does not deal with entities...
-
-	result[0].content.remove(QRegExp("<[^>]*>"));
+	Q_ASSERT(result.pages.size() > 0);
+	result.pages[0].content.remove(QRegularExpression("<[^>]*>"));
 	return result;
 }

shared/tagstripperprocessor.h

@@ -8,7 +8,7 @@ class TagStripperProcessor : public DefaultTextProcessor
 	TagStripperProcessor();
 
   public:
-	QVector<PageData> process(const QByteArray &data) const override;
+	DocumentProcessResult process(const QByteArray &data) const override;
 };
 
 #endif // XMLSTRIPPERPROCESSOR_H

shared/token.h

@@ -19,7 +19,9 @@ enum TokenType
 	FILTER_PATH_SIZE,
 	FILTER_PATH_ENDS,
 	FILTER_PATH_STARTS,
-	FILTER_CONTENT = 512,
+	FILTER_TAG_ASSIGNED,
+	FILTER_OUTLINE_CONTAINS,
+	FILTER_CONTENT = 512, /* Everything below here is content search (except LIMIT) */
 	FILTER_CONTENT_CONTAINS,
 	FILTER_CONTENT_PAGE,
 	LIMIT = 1024

shared/utils.cpp

@@ -14,7 +14,7 @@ QByteArray Utils::readFile(QString path)
 	QByteArray data = file.readAll();
 	if(data.isEmpty() && file.error() != QFileDevice::FileError::NoError)
 	{
-		throw LooqsGeneralException("Error reading file: " + path + ", Error: " + file.error());
+		throw LooqsGeneralException("Error reading file: " + path + ", Error: " + QString::number(file.error()));
 	}
 	return data;
 }

shared/wildcardmatcher.cpp

@@ -5,9 +5,8 @@ void WildcardMatcher::setPatterns(QStringList patterns)
 	this->regexes.clear();
 	for(QString &str : patterns)
 	{
-		QRegExp regexp;
-		regexp.setPattern(str);
-		regexp.setPatternSyntax(QRegExp::WildcardUnix);
+		QRegularExpression regexp;
+		regexp.setPattern(QRegularExpression::wildcardToRegularExpression(str, QRegularExpression::UnanchoredWildcardConversion));
 		this->regexes.append(regexp);
 	}
 }
@@ -18,9 +17,10 @@ WildcardMatcher::WildcardMatcher()
 
 bool WildcardMatcher::match(QString haystack) const
 {
-	for(const QRegExp &regexp : this->regexes)
+	for(const QRegularExpression &regexp : this->regexes)
 	{
-		if(regexp.exactMatch(haystack))
+		QRegularExpressionMatch match = regexp.match(haystack);
+		if(match.hasMatch())
 		{
 			return true;
 		}

shared/wildcardmatcher.h

@@ -1,11 +1,11 @@
 #ifndef WILDCARDMATCHER_H
 #define WILDCARDMATCHER_H
 #include <QStringList>
-#include <QRegExp>
+#include <QRegularExpression>
 class WildcardMatcher
 {
   private:
-	QVector<QRegExp> regexes;
+	QVector<QRegularExpression> regexes;
 	QStringList patterns;
 
   public:

submodules/exile.h

@@ -1 +1 @@
-Subproject commit e711a1d53a9210f8f562f774901e5e044d20e67a
+Subproject commit 44b9a17becf6882e1b3728cbf885ae9e5a6717af