src/curses/formatted_color.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008-2017 by Andrzej Rybczak                            *
   3  *   electricityispower@gmail.com                                          *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  19  ***************************************************************************/
  20
  21 #include <istream>
  22 #include "formatted_color.h"
  23
  24 namespace {
  25
  26 void verifyFormats(const NC::FormattedColor::Formats &formats)
  27 {
  28         for (auto &fmt : formats)
  29         {
  30                 if (fmt == NC::Format::NoBold
  31                     || fmt == NC::Format::NoUnderline
  32                     || fmt == NC::Format::NoReverse
  33                     || fmt == NC::Format::NoAltCharset)
  34                         throw std::logic_error("FormattedColor can't hold disabling formats");
  35         }
  36 }
  37
  38 }
  39
  40 NC::FormattedColor::FormattedColor(Color color_, Formats formats_)
  41 {
  42         if (color_ == NC::Color::End)
  43                 throw std::logic_error("FormattedColor can't hold Color::End");
  44         m_color = std::move(color_);
  45         verifyFormats(formats_);
  46         m_formats = std::move(formats_);
  47 }
  48
  49 std::istream &NC::operator>>(std::istream &is, NC::FormattedColor &fc)
  50 {
  51         NC::Color c;
  52         is >> c;
  53         if (!is.eof() && is.peek() == ':')
  54         {
  55                 is.get();
  56                 NC::FormattedColor::Formats formats;
  57                 while (!is.eof() && isalpha(is.peek()))
  58                 {
  59                         char flag = is.get();
  60                         switch (flag)
  61                         {
  62                         case 'b':
  63                                 formats.push_back(NC::Format::Bold);
  64                                 break;
  65                         case 'u':
  66                                 formats.push_back(NC::Format::Underline);
  67                                 break;
  68                         case 'r':
  69                                 formats.push_back(NC::Format::Reverse);
  70                                 break;
  71                         case 'a':
  72                                 formats.push_back(NC::Format::AltCharset);
  73                                 break;
  74                         default:
  75                                 is.setstate(std::ios::failbit);
  76                                 break;
  77                         }
  78                 }
  79                 fc = NC::FormattedColor(c, std::move(formats));
  80         }
  81         else
  82                 fc = NC::FormattedColor(c, {});
  83         return is;
  84 }