new method PILog::readAllLogs

libs/main/application/pilog.cpp

@@ -110,6 +110,58 @@ void PILog::stop() {
 }
 
 
+PIStringList PILog::readAllLogs() const {
+	PIMap<PISystemTime, PIString> names;
+	auto dir = PIDir(log_dir);
+	auto fil = dir.entries();
+	for (auto fi: fil) {
+		if (!fi.isFile()) continue;
+		if (!fi.name().contains(".log.")) continue;
+		names[PIDateTime::current().fromString(fi.baseName(), "yyyy_MM_dd__hh_mm_ss").toSystemTime()] = dir.relative(fi.path);
+	}
+	PIStringList ret;
+	PIString cur_filename = dir.relative(log_file.path());
+	auto it               = names.makeIterator();
+	bool was_own          = false;
+	auto readFile         = [&ret](PIFile * f) {
+		PIIOTextStream ts(f);
+		PIString line;
+		while (!ts.isEnd()) {
+			line = ts.readLine().trim();
+			if (line.isNotEmpty()) ret << line;
+		}
+	};
+	while (it.next()) {
+		PIFile * f = nullptr;
+		bool own   = true;
+		if (it.value() == cur_filename) {
+			log_mutex.lock();
+			f = &log_file;
+			f->seekToBegin();
+			own     = false;
+			was_own = true;
+		} else {
+			f = new PIFile(log_dir + "/" + it.value(), PIIODevice::ReadOnly);
+		}
+		readFile(f);
+		if (own)
+			delete f;
+		else {
+			f->seekToEnd();
+			log_mutex.unlock();
+		}
+	}
+	if (!was_own) {
+		log_mutex.lock();
+		log_file.seekToBegin();
+		readFile(&log_file);
+		log_file.seekToEnd();
+		log_mutex.unlock();
+	}
+	return ret;
+}
+
+
 void PILog::coutDone(int id, PIString * buffer) {
 	if (!buffer) return;
 	if (!id_by_cat.containsValue(id)) return;