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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvisvgm/src/Message.hpp
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+/*************************************************************************
+** Message.hpp **
+** **
+** This file is part of dvisvgm -- a fast DVI to SVG converter **
+** Copyright (C) 2005-2019 Martin Gieseking <martin.gieseking@uos.de> **
+** **
+** This program is free software; you can redistribute it and/or **
+** modify it under the terms of the GNU General Public License as **
+** published by the Free Software Foundation; either version 3 of **
+** the License, or (at your option) any later version. **
+** **
+** This program is distributed in the hope that it will be useful, but **
+** WITHOUT ANY WARRANTY; without even the implied warranty of **
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
+** GNU General Public License for more details. **
+** **
+** You should have received a copy of the GNU General Public License **
+** along with this program; if not, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#ifndef MESSAGE_HPP
+#define MESSAGE_HPP
+
+#include <algorithm>
+#include <cstdint>
+#include <string>
+#include <ostream>
+#include <sstream>
+#include "Terminal.hpp"
+
+
+class Message;
+
+class MessageStream {
+ friend class Message;
+
+ public:
+ MessageStream () =default;
+ explicit MessageStream (std::ostream &os) noexcept;
+ ~MessageStream ();
+
+ template <typename T>
+ MessageStream& operator << (const T &obj) {
+ std::ostringstream oss;
+ oss << obj;
+ (*this) << oss.str();
+ return *this;
+ }
+
+ MessageStream& operator << (const char *str);
+ MessageStream& operator << (const char &c);
+ MessageStream& operator << (const std::string &str) {return (*this) << str.c_str();}
+
+ void indent (int level) {_indent = std::max(0, level*2);}
+ void indent (bool reset=false);
+ void outdent (bool all=false);
+ void clearline ();
+
+ protected:
+ void putChar (char c, std::ostream &os);
+ std::ostream* os () {return _os;}
+
+ private:
+ std::ostream *_os=nullptr;
+ bool _nl=false; ///< true if previous character was a newline
+ int _col=1; ///< current terminal column
+ int _indent=0; ///< indentation width (number of columns/characters)
+};
+
+
+class Message {
+ struct Color {
+ Color () =default;
+ explicit Color (int8_t fgcolor) noexcept : foreground(fgcolor) {}
+ Color (int8_t fgcolor, bool light) noexcept: foreground(fgcolor + (light ? 8 : 0)) {}
+ Color (int8_t fgcolor, int8_t bgcolor) noexcept : foreground(fgcolor), background(bgcolor) {}
+ int8_t foreground = -1;
+ int8_t background = -1;
+ };
+
+ public:
+ enum MessageClass {
+ MC_ERROR,
+ MC_WARNING,
+ MC_MESSAGE,
+ MC_PAGE_NUMBER,
+ MC_PAGE_SIZE,
+ MC_PAGE_WRITTEN,
+ MC_STATE,
+ MC_TRACING,
+ MC_PROGRESS,
+ };
+
+ public:
+ static MessageStream& mstream (bool prefix=false, MessageClass mclass=MC_MESSAGE);
+ static MessageStream& estream (bool prefix=false);
+ static MessageStream& wstream (bool prefix=false);
+
+ enum {ERRORS=1, WARNINGS=2, MESSAGES=4};
+ static int LEVEL;
+ static bool COLORIZE;
+
+ protected:
+ static void init ();
+
+
+ private:
+ static Color _classColors[];
+ static bool _initialized;
+};
+
+#endif