1 files changed, 48 insertions, 0 deletions
diff --git a/Logger/cyclelogfile.cpp b/Logger/cyclelogfile.cpp
new file mode 100644
index 0000000..cb0266e
--- /dev/null
+++ b/Logger/cyclelogfile.cpp
@@ -0,0 +1,48 @@
+#include "logger.h"
+
+// if "now" matches the previous logfile name, no cycling needed. otherwise, determine new logfile name.
+bool Logger::cycleLogFile()
+{
+    // calculate the expected log filename
+    QString newFilename = _logLabel;
+
+    // get date to see if we need to cycle
+    QDate date(QDate::currentDate());
+
+    // when is it necessary to cycle?
+    switch ( _cyclePeriod )
+    {
+        case 1: // yearly
+            newFilename += date.toString("-yyyy");
+            break;
+        case 2: // monthly
+            newFilename += date.toString("-yyyy-MM");
+            break;
+        case 3: // weekly
+            newFilename += date.toString("-yyyy") + "-week" + QString("%1").arg(date.weekNumber(), 2, 10, QChar('0'));
+            break;
+        case 4: // daily
+            newFilename += date.toString("-yyyy-MM-dd");
+            break;
+        default:; // 0 = never
+    }
+
+    // add log file extension
+    newFilename += ".log";
+
+    // if current and new filename are not the same, cycle log file
+    if (_logFileName != newFilename)
+    {
+        // cycle log file
+        _logFileName = newFilename;
+
+        // close the existing/opened log file
+        closeLogFile();
+
+        // open the new log file (pass possible error to caller)
+        return openLogFile();
+    }
+
+    // else: no cycling necessary
+    return true;
+}