From 98c5ae234d24943b63736b6581f440155252e21f Mon Sep 17 00:00:00 2001
From: Martin Rotter <rotter.martinos@gmail.com>
Date: Thu, 9 Nov 2017 20:13:12 +0100
Subject: [PATCH] Experimental persistent log.

---
 resources/binaries              |  2 +-
 src/main.cpp                    |  5 ++++
 src/miscellaneous/debugging.cpp | 48 ++++++++++++++++++++++++++++-----
 src/miscellaneous/debugging.h   | 17 +++++++++---
 4 files changed, 62 insertions(+), 10 deletions(-)

diff --git a/resources/binaries b/resources/binaries
index 4a01edaec..ae7084718 160000
--- a/resources/binaries
+++ b/resources/binaries
@@ -1 +1 @@
-Subproject commit 4a01edaec7d67d3b2ae81aeea2a3c876216fbab8
+Subproject commit ae7084718c41afc01919779e58cd449e0eebd401
diff --git a/src/main.cpp b/src/main.cpp
index b74fb1bd1..5383d9e3b 100755
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -62,6 +62,11 @@ int main(int argc, char* argv[]) {
   // Instantiate base application object.
   Application application(APP_LOW_NAME, argc, argv);
 
+  if (application.arguments().contains(QL1S("-log"))) {
+    Debugging::instance()->setTargetFile(IOFactory::getSystemFolder(QStandardPaths::TempLocation) +
+                                         QDir::separator() + QL1S("rssguard.log"));
+  }
+
   qDebug("Instantiated Application class.");
 
   // Check if another instance is running.
diff --git a/src/miscellaneous/debugging.cpp b/src/miscellaneous/debugging.cpp
index 20ef55188..4b3c51f0d 100755
--- a/src/miscellaneous/debugging.cpp
+++ b/src/miscellaneous/debugging.cpp
@@ -11,7 +11,28 @@
 #include <cstdlib>
 #include <ctime>
 
-Debugging::Debugging() {}
+Q_GLOBAL_STATIC(Debugging, qz_debug_acmanager)
+
+Debugging * Debugging::instance() {
+  return qz_debug_acmanager();
+}
+
+void Debugging::setTargetFile(const QString& targetFile) {
+  m_targetFile = targetFile;
+
+  if (!m_targetFile.isEmpty()) {
+    m_targetFileHandle = new QFile(m_targetFile);
+    m_targetFileHandle->open(QIODevice::WriteOnly | QIODevice::Append);
+  }
+}
+
+QString Debugging::targetFile() const {
+  return m_targetFile;
+}
+
+QFile* Debugging::targetFileHandle() {
+  return m_targetFileHandle;
+}
 
 void Debugging::performLog(const char* message, QtMsgType type, const char* file, const char* function, int line) {
   const char* type_string = typeToString(type);
@@ -21,13 +42,26 @@ void Debugging::performLog(const char* message, QtMsgType type, const char* file
 
   std::strftime(mbstr, sizeof(mbstr), "%y/%d/%m %H:%M:%S", std::localtime(&t));
 
-  // Write to console.
-  if (file == 0 || function == 0 || line < 0) {
-    fprintf(stderr, "[%s] %s: %s (%s)\n", APP_LOW_NAME, type_string, message, mbstr);
+  if (instance()->targetFile().isEmpty()) {
+
+    // Write to console.
+    if (file == 0 || function == 0 || line < 0) {
+      fprintf(stderr, "[%s] %s: %s (%s)\n", APP_LOW_NAME, type_string, message, mbstr);
+    }
+    else {
+      fprintf(stderr, "[%s] %s (%s)\n  Type: %s\n  File: %s (line %d)\n  Function: %s\n\n",
+              APP_LOW_NAME, message, mbstr, type_string, file, line, function);
+    }
   }
   else {
-    fprintf(stderr, "[%s] %s (%s)\n  Type: %s\n  File: %s (line %d)\n  Function: %s\n\n",
-            APP_LOW_NAME, message, mbstr, type_string, file, line, function);
+    if (file == 0 || function == 0 || line < 0) {
+      instance()->targetFileHandle()->write(QString("[%1] %2: %3 (%4)\n").arg(APP_LOW_NAME, type_string, message, mbstr).toUtf8());
+    }
+    else {
+      instance()->targetFileHandle()->write(QString("[%1] %2 (%3)\n  Type: %4\n  File: %5 (line %6)\n  Function: %7\n\n")
+                                            .arg(APP_LOW_NAME, message, mbstr, type_string,
+                                                 file, QString::number(line), function).toUtf8());
+    }
   }
 
   if (type == QtFatalMsg) {
@@ -52,6 +86,8 @@ const char* Debugging::typeToString(QtMsgType type) {
   }
 }
 
+Debugging::Debugging() {}
+
 void Debugging::debugHandler(QtMsgType type, const QMessageLogContext& placement, const QString& message) {
 #ifndef QT_NO_DEBUG_OUTPUT
   performLog(qPrintable(message), type, placement.file, placement.function, placement.line);
diff --git a/src/miscellaneous/debugging.h b/src/miscellaneous/debugging.h
index 3e8cd6d5b..ddec493b7 100755
--- a/src/miscellaneous/debugging.h
+++ b/src/miscellaneous/debugging.h
@@ -5,8 +5,12 @@
 
 #include <QtGlobal>
 
+#include <QFile>
+#include <QString>
+
 class Debugging {
   public:
+    explicit Debugging();
 
     // Specifies format of output console messages.
     // NOTE: QT_NO_DEBUG_OUTPUT - disables debug outputs completely!!!
@@ -14,10 +18,17 @@ class Debugging {
     static void performLog(const char* message, QtMsgType type, const char* file = 0, const char* function = 0, int line = -1);
     static const char* typeToString(QtMsgType type);
 
-  private:
+    // Returns pointer to global silent network manager
+    static Debugging* instance();
 
-    // Constructor.
-    explicit Debugging();
+    void setTargetFile(const QString& targetFile);
+    QString targetFile() const;
+
+    QFile* targetFileHandle();
+
+  private:
+    QString m_targetFile;
+    QFile* m_targetFileHandle;
 };
 
 #endif // DEBUGGING_H