changed in logger:

renamed Logger -> Log
        this class has an api (<< operators) for taking what should be put to the log file
        as the buffer is used WTextStream which should be allocated elsewhere
added:  FileLog - this class saves to a file log





git-svn-id: svn://ttmath.org/publicrep/pikotools/trunk@1149 e52654a7-88a9-db11-a3e9-0013d4bc506e

log/filelog.h

@@ -0,0 +1,95 @@
+/*
+ * This file is a part of Winix
+ * and is distributed under the 2-Clause BSD licence.
+ * Author: Tomasz Sowa <t.sowa@ttmath.org>
+ */
+
+/*
+ * Copyright (c) 2018, Tomasz Sowa
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef headerfile_picotools_log_filelog
+#define headerfile_picotools_log_filelog
+
+#include <sstream>
+#include <fstream>
+#include <iostream>
+#include <string>
+#include "textstream/textstream.h"
+
+
+namespace PT
+{
+
+
+
+class FileLog
+{
+public:
+
+	FileLog();
+	virtual ~FileLog();
+
+	virtual void init(const std::wstring & log_file, bool log_stdout, int log_level, bool save_each_line);
+	virtual void save_log(PT::WTextStream * buffer);
+
+	virtual int  get_log_level();
+	virtual bool should_save_each_line();
+
+
+protected:
+
+	// file log
+	std::string log_file;
+	std::ofstream file;
+
+	// logging to stdout
+	bool log_stdout;
+
+	// is the config file already open
+	bool log_file_open;
+
+	// log lovel
+	int log_level;
+
+	// whether to save each line (for debug)
+	bool save_each_line;
+
+
+	virtual bool synchro_lock();
+	virtual void synchro_unlock();
+	virtual void PutBuffer(PT::WTextStream * buffer, std::ostream & out_stream);
+	virtual void open_file();
+};
+
+
+} // namespace
+
+
+
+#endif
+