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 "formatted_color.h"
  22
  23 namespace {
  24
  25 void verifyFormats(const NC::FormattedColor::Formats &formats)
  26 {
  27         for (auto &fmt : formats)
  28         {
  29                 if (fmt == NC::Format::NoBold
  30                     || fmt == NC::Format::NoUnderline
  31                     || fmt == NC::Format::NoReverse
  32                     || fmt == NC::Format::NoAltCharset)
  33                         throw std::logic_error("FormattedColor can't hold disabling formats");
  34         }
  35 }
  36
  37 }
  38
  39 NC::FormattedColor::FormattedColor(Color color_, Formats formats_)
  40 {
  41         if (color_ == NC::Color::End)
  42                 throw std::logic_error("FormattedColor can't hold Color::End");
  43         m_color = std::move(color_);
  44         verifyFormats(formats_);
  45         m_formats = std::move(formats_);
  46 }
  47
  48 std::istream &NC::operator>>(std::istream &is, NC::FormattedColor &fc)
  49 {
  50         NC::Color c;
  51         is >> c;
  52         if (!is.eof() && is.peek() == ':')
  53         {
  54                 is.get();
  55                 NC::FormattedColor::Formats formats;
  56                 while (!is.eof() && isalpha(is.peek()))
  57                 {
  58                         char flag = is.get();
  59                         switch (flag)
  60                         {
  61                         case 'b':
  62                                 formats.push_back(NC::Format::Bold);
  63                                 break;
  64                         case 'u':
  65                                 formats.push_back(NC::Format::Underline);
  66                                 break;
  67                         case 'r':
  68                                 formats.push_back(NC::Format::Reverse);
  69                                 break;
  70                         case 'a':
  71                                 formats.push_back(NC::Format::AltCharset);
  72                                 break;
  73                         default:
  74                                 is.setstate(std::ios::failbit);
  75                                 break;
  76                         }
  77                 }
  78                 fc = NC::FormattedColor(c, std::move(formats));
  79         }
  80         else
  81                 fc = NC::FormattedColor(c, {});
  82         return is;
  83 }