GH-926 implement log cleaning functionality

Also adds gzip compressed log support

4 files changed, 161 insertions, 39 deletions

diff --git a/application/InstancePageProvider.h b/application/InstancePageProvider.h
index cff0b6d2..79bdb71b 100644
--- a/application/InstancePageProvider.h
+++ b/application/InstancePageProvider.h
@@ -41,12 +41,10 @@ public:
 			values.append(new NotesPage(onesix.get()));
 			values.append(new ScreenshotsPage(PathCombine(onesix->minecraftRoot(), "screenshots")));
 			values.append(new InstanceSettingsPage(onesix.get()));
-			values.append(new OtherLogsPage(onesix->minecraftRoot()));
 		}
 		std::shared_ptr<LegacyInstance> legacy = std::dynamic_pointer_cast<LegacyInstance>(inst);
 		if(legacy)
 		{
-			QList<BasePage *> values;
 			// FIXME: actually implement the legacy instance upgrade, then enable this.
 			//values.append(new LegacyUpgradePage(this));
 			values.append(new LegacyJarModPage(legacy.get()));
@@ -58,8 +56,12 @@ public:
 			values.append(new NotesPage(legacy.get()));
 			values.append(new ScreenshotsPage(PathCombine(legacy->minecraftRoot(), "screenshots")));
 			values.append(new InstanceSettingsPage(legacy.get()));
-			values.append(new OtherLogsPage(legacy->minecraftRoot()));
-			return values;
+			values.append(new OtherLogsPage(legacy->minecraftRoot(), inst->getLogFileMatcher()));
+		}
+		auto logMatcher = inst->getLogFileMatcher();
+		if(logMatcher)
+		{
+			values.append(new OtherLogsPage(onesix->minecraftRoot(), logMatcher));
 		}
 		return values;
 	}
diff --git a/application/pages/OtherLogsPage.cpp b/application/pages/OtherLogsPage.cpp
index 2f9a800c..d59f0451 100644
--- a/application/pages/OtherLogsPage.cpp
+++ b/application/pages/OtherLogsPage.cpp
@@ -20,20 +20,20 @@
 
 #include "GuiUtil.h"
 #include "RecursiveFileSystemWatcher.h"
+#include <GZip.h>
 #include <pathutils.h>
 
-OtherLogsPage::OtherLogsPage(QString path, QWidget *parent)
-	: QWidget(parent), ui(new Ui::OtherLogsPage), m_path(path),
+OtherLogsPage::OtherLogsPage(QString path, IPathMatcher::Ptr fileFilter, QWidget *parent)
+	: QWidget(parent), ui(new Ui::OtherLogsPage), m_path(path), m_fileFilter(fileFilter),
 	  m_watcher(new RecursiveFileSystemWatcher(this))
 {
 	ui->setupUi(this);
 	ui->tabWidget->tabBar()->hide();
 
-	m_watcher->setFileExpression("(.*\\.log(\\.[0-9]*)?$)|(crash-.*\\.txt)");
+	m_watcher->setMatcher(fileFilter);
 	m_watcher->setRootDir(QDir::current().absoluteFilePath(m_path));
 
-	connect(m_watcher, &RecursiveFileSystemWatcher::filesChanged, this,
-			&OtherLogsPage::populateSelectLogBox);
+	connect(m_watcher, &RecursiveFileSystemWatcher::filesChanged, this, &OtherLogsPage::populateSelectLogBox);
 	populateSelectLogBox();
 }
 
@@ -55,15 +55,23 @@ void OtherLogsPage::populateSelectLogBox()
 {
 	ui->selectLogBox->clear();
 	ui->selectLogBox->addItems(m_watcher->files());
-	if (m_currentFile.isNull())
+	if (m_currentFile.isEmpty())
 	{
+		setControlsEnabled(false);
 		ui->selectLogBox->setCurrentIndex(-1);
 	}
 	else
 	{
 		const int index = ui->selectLogBox->findText(m_currentFile);
 		if (index != -1)
+		{
 			ui->selectLogBox->setCurrentIndex(index);
+			setControlsEnabled(true);
+		}
+		else
+		{
+			setControlsEnabled(false);
+		}
 	}
 }
 
@@ -91,6 +99,11 @@ void OtherLogsPage::on_selectLogBox_currentIndexChanged(const int index)
 
 void OtherLogsPage::on_btnReload_clicked()
 {
+	if(m_currentFile.isEmpty())
+	{
+		setControlsEnabled(false);
+		return;
+	}
 	QFile file(PathCombine(m_path, m_currentFile));
 	if (!file.open(QFile::ReadOnly))
 	{
@@ -102,16 +115,39 @@ void OtherLogsPage::on_btnReload_clicked()
 	}
 	else
 	{
-		if (file.size() < 10000000ll)
-		{
-			ui->text->setPlainText(QString::fromUtf8(file.readAll()));
-		}
-		else
+		auto showTooBig = [&]()
 		{
 			ui->text->setPlainText(
 				tr("The file (%1) is too big. You may want to open it in a viewer optimized "
 				   "for large files.").arg(file.fileName()));
+		};
+		if(file.size() >= 10000000ll)
+		{
+			showTooBig();
+			return;
 		}
+		QString content;
+		if(file.fileName().endsWith(".gz"))
+		{
+			QByteArray temp;
+			if(!GZip::inflate(file.readAll(), temp))
+			{
+				ui->text->setPlainText(
+					tr("The file (%1) is not readable.").arg(file.fileName()));
+				return;
+			}
+			content = QString::fromUtf8(temp);
+		}
+		else
+		{
+			content = QString::fromUtf8(file.readAll());
+		}
+		if (content.size() >= 50000000ll)
+		{
+			showTooBig();
+			return;
+		}
+		ui->text->setPlainText(content);
 	}
 }
 
@@ -119,12 +155,19 @@ void OtherLogsPage::on_btnPaste_clicked()
 {
 	GuiUtil::uploadPaste(ui->text->toPlainText(), this);
 }
+
 void OtherLogsPage::on_btnCopy_clicked()
 {
 	GuiUtil::setClipboardText(ui->text->toPlainText());
 }
+
 void OtherLogsPage::on_btnDelete_clicked()
 {
+	if(m_currentFile.isEmpty())
+	{
+		setControlsEnabled(false);
+		return;
+	}
 	if (QMessageBox::question(this, tr("Delete"),
 							  tr("Do you really want to delete %1?").arg(m_currentFile),
 							  QMessageBox::Yes, QMessageBox::No) == QMessageBox::No)
@@ -139,6 +182,68 @@ void OtherLogsPage::on_btnDelete_clicked()
 	}
 }
 
+
+
+void OtherLogsPage::on_btnClean_clicked()
+{
+	auto toDelete = m_watcher->files();
+	if(toDelete.isEmpty())
+	{
+		return;
+	}
+	QMessageBox *messageBox = new QMessageBox(this);
+	messageBox->setWindowTitle(tr("Clean up"));
+	if(toDelete.size() > 5)
+	{
+		messageBox->setText(tr("Do you really want to delete all log files?"));
+		messageBox->setDetailedText(toDelete.join('\n'));
+	}
+	else
+	{
+		messageBox->setText(tr("Do you really want to these files?\n%1").arg(toDelete.join('\n')));
+	}
+	messageBox->setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);
+	messageBox->setDefaultButton(QMessageBox::Ok);
+	messageBox->setTextInteractionFlags(Qt::TextSelectableByMouse);
+	messageBox->setIcon(QMessageBox::Question);
+	messageBox->setTextInteractionFlags(Qt::TextBrowserInteraction);
+
+	if (messageBox->exec() != QMessageBox::Ok)
+	{
+		return;
+	}
+	QStringList failed;
+	for(auto item: toDelete)
+	{
+		QFile file(PathCombine(m_path, item));
+		if (!file.remove())
+		{
+			failed.push_back(item);
+		}
+	}
+	if(!failed.empty())
+	{
+		QMessageBox *messageBox = new QMessageBox(this);
+		messageBox->setWindowTitle(tr("Error"));
+		if(failed.size() > 5)
+		{
+			messageBox->setText(tr("Couldn't delete some files!"));
+			messageBox->setDetailedText(failed.join('\n'));
+		}
+		else
+		{
+			messageBox->setText(tr("Couldn't delete some files:\n%1").arg(failed.join('\n')));
+		}
+		messageBox->setStandardButtons(QMessageBox::Ok);
+		messageBox->setDefaultButton(QMessageBox::Ok);
+		messageBox->setTextInteractionFlags(Qt::TextSelectableByMouse);
+		messageBox->setIcon(QMessageBox::Critical);
+		messageBox->setTextInteractionFlags(Qt::TextBrowserInteraction);
+		messageBox->exec();
+	}
+}
+
+
 void OtherLogsPage::setControlsEnabled(const bool enabled)
 {
 	ui->btnReload->setEnabled(enabled);
@@ -146,4 +251,5 @@ void OtherLogsPage::setControlsEnabled(const bool enabled)
 	ui->btnCopy->setEnabled(enabled);
 	ui->btnPaste->setEnabled(enabled);
 	ui->text->setEnabled(enabled);
+	ui->btnClean->setEnabled(enabled);
 }
diff --git a/application/pages/OtherLogsPage.h b/application/pages/OtherLogsPage.h
index d6e4ec9f..9a5a6ed4 100644
--- a/application/pages/OtherLogsPage.h
+++ b/application/pages/OtherLogsPage.h
@@ -19,6 +19,7 @@
 
 #include "BasePage.h"
 #include <MultiMC.h>
+#include <pathmatcher/IPathMatcher.h>
 
 namespace Ui
 {
@@ -32,7 +33,7 @@ class OtherLogsPage : public QWidget, public BasePage
 	Q_OBJECT
 
 public:
-	explicit OtherLogsPage(QString path, QWidget *parent = 0);
+	explicit OtherLogsPage(QString path, IPathMatcher::Ptr fileFilter, QWidget *parent = 0);
 	~OtherLogsPage();
 
 	QString id() const override
@@ -61,12 +62,15 @@ private slots:
 	void on_btnPaste_clicked();
 	void on_btnCopy_clicked();
 	void on_btnDelete_clicked();
+	void on_btnClean_clicked();
+
+private:
+	void setControlsEnabled(const bool enabled);
 
 private:
 	Ui::OtherLogsPage *ui;
 	QString m_path;
 	RecursiveFileSystemWatcher *m_watcher;
 	QString m_currentFile;
-
-	void setControlsEnabled(const bool enabled);
+	IPathMatcher::Ptr m_fileFilter;
 };
diff --git a/application/pages/OtherLogsPage.ui b/application/pages/OtherLogsPage.ui
index 08200684..755de6df 100644
--- a/application/pages/OtherLogsPage.ui
+++ b/application/pages/OtherLogsPage.ui
@@ -37,35 +37,28 @@
       </attribute>
       <layout class="QVBoxLayout" name="verticalLayout">
        <item>
-        <layout class="QHBoxLayout" name="horizontalLayout">
-         <item>
-          <widget class="QComboBox" name="selectLogBox">
-           <property name="sizePolicy">
-            <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
-             <horstretch>0</horstretch>
-             <verstretch>0</verstretch>
-            </sizepolicy>
+        <layout class="QGridLayout" name="gridLayout">
+         <item row="3" column="1">
+          <widget class="QPushButton" name="btnCopy">
+           <property name="toolTip">
+            <string>Copy the whole log into the clipboard</string>
            </property>
-          </widget>
-         </item>
-         <item>
-          <widget class="QPushButton" name="btnReload">
            <property name="text">
-            <string>Reload</string>
+            <string>&amp;Copy</string>
            </property>
           </widget>
          </item>
-         <item>
-          <widget class="QPushButton" name="btnCopy">
+         <item row="3" column="3">
+          <widget class="QPushButton" name="btnDelete">
            <property name="toolTip">
-            <string>Copy the whole log into the clipboard</string>
+            <string>Clear the log</string>
            </property>
            <property name="text">
-            <string>&amp;Copy</string>
+            <string>Delete</string>
            </property>
           </widget>
          </item>
-         <item>
+         <item row="3" column="2">
           <widget class="QPushButton" name="btnPaste">
            <property name="toolTip">
             <string>Upload the log to paste.ee - it will stay online for a month</string>
@@ -75,13 +68,30 @@
            </property>
           </widget>
          </item>
-         <item>
-          <widget class="QPushButton" name="btnDelete">
+         <item row="3" column="0">
+          <widget class="QPushButton" name="btnReload">
+           <property name="text">
+            <string>Reload</string>
+           </property>
+          </widget>
+         </item>
+         <item row="0" column="0" colspan="5">
+          <widget class="QComboBox" name="selectLogBox">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+          </widget>
+         </item>
+         <item row="3" column="4">
+          <widget class="QPushButton" name="btnClean">
            <property name="toolTip">
             <string>Clear the log</string>
            </property>
            <property name="text">
-            <string>Delete</string>
+            <string>Clean</string>
            </property>
           </widget>
          </item>