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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-1.7/src/Terminal.cpp')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-1.7/src/Terminal.cpp | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.7/src/Terminal.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.7/src/Terminal.cpp new file mode 100644 index 00000000000..e95111d196b --- /dev/null +++ b/Build/source/texk/dvisvgm/dvisvgm-1.7/src/Terminal.cpp @@ -0,0 +1,208 @@ +/************************************************************************* +** Terminal.cpp ** +** ** +** This file is part of dvisvgm -- the DVI to SVG converter ** +** Copyright (C) 2005-2014 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/>. ** +*************************************************************************/ + +#include <config.h> +#include "Terminal.h" + +#ifdef HAVE_TERMIOS_H +#include <termios.h> +#endif + +#ifdef GWINSZ_IN_SYS_IOCTL +#include <sys/ioctl.h> +#endif + +#ifdef __WIN32__ +#include <windows.h> +#endif + +#include <cstdio> + + +using namespace std; + + +const int Terminal::RED = 1; +const int Terminal::GREEN = 2; +const int Terminal::BLUE = 4; + +const int Terminal::CYAN = GREEN|BLUE; +const int Terminal::YELLOW = RED|GREEN; +const int Terminal::MAGENTA = RED|BLUE; +const int Terminal::WHITE = RED|GREEN|BLUE; +const int Terminal::DEFAULT = -1; +const int Terminal::BLACK = 0; + +#ifdef __WIN32__ +int Terminal::_defaultColor; +int Terminal::_cursorHeight; +#endif + +int Terminal::_fgcolor = Terminal::DEFAULT; +int Terminal::_bgcolor = Terminal::DEFAULT; + + +/** Initializes the terminal. This method should be called before any of the others. + * @param[in,out] os terminal output stream (currently unused) */ +void Terminal::init (ostream &os) { +#ifdef __WIN32__ + HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE); + if (h != INVALID_HANDLE_VALUE) { + CONSOLE_SCREEN_BUFFER_INFO buffer_info; + GetConsoleScreenBufferInfo(h, &buffer_info); + _defaultColor = (buffer_info.wAttributes & 0xff); + CONSOLE_CURSOR_INFO cursor_info; + GetConsoleCursorInfo(h, &cursor_info); + _cursorHeight = cursor_info.dwSize; + } +#endif +} + + +/** Finishes the terminal output. Should be called after last terminal action. + * @param[in,out] os terminal output stream */ +void Terminal::finish (ostream &os) { + fgcolor(DEFAULT, os); + bgcolor(DEFAULT, os); + cursor(true); +} + + +/** Returns the number of terminal columns (number of characters per row). + * If it's not possible to retrieve information about the terminal size, 0 is returned. */ +int Terminal::columns () { +#if defined(TIOCGWINSZ) + struct winsize ws; + if (ioctl(fileno(stderr), TIOCGWINSZ, &ws) < 0) + return 0; + return ws.ws_col; +#elif defined(__WIN32__) + CONSOLE_SCREEN_BUFFER_INFO info; + if (!GetConsoleScreenBufferInfo(GetStdHandle(STD_ERROR_HANDLE), &info)) + return 0; + return info.dwSize.X; +#else + return 0; +#endif +} + + +/** Returns the number of terminal rows. + * If it's not possible to retrieve information about the terminal size, 0 is returned. */ +int Terminal::rows () { +#if defined(TIOCGWINSZ) + struct winsize ws; + if (ioctl(fileno(stderr), TIOCGWINSZ, &ws) < 0) + return 0; + return ws.ws_row; +#elif defined(__WIN32__) + CONSOLE_SCREEN_BUFFER_INFO info; + if (!GetConsoleScreenBufferInfo(GetStdHandle(STD_ERROR_HANDLE), &info)) + return 0; + return info.dwSize.Y; +#else + return 0; +#endif +} + + +/** Sets the foreground color. + * @param[in] color color code + * @param[in] os terminal output stream */ +void Terminal::fgcolor (int color, ostream &os) { + _fgcolor = color; + +#ifdef __WIN32__ + HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE); + if (h != INVALID_HANDLE_VALUE) { + CONSOLE_SCREEN_BUFFER_INFO info; + GetConsoleScreenBufferInfo(h, &info); + if (_fgcolor == DEFAULT) + color = _defaultColor & 0x0f; + else { + // swap red and blue bits + color = (color & 0x0a) | ((color & 1) << 2) | ((color & 4) >> 2); + } + color = (info.wAttributes & 0xf0) | (color & 0x0f); + SetConsoleTextAttribute(h, (DWORD)color); + } +#else + bool light = false; + if (color != DEFAULT && color > 7) { + light = true; + color %= 8; + } + if (color == DEFAULT) { + os << "\x1B[0m"; + if (_bgcolor != DEFAULT) + bgcolor(_bgcolor, os); + } + else + os << "\x1B[" << (light ? '1': '0') << ';' << (30+(color & 0x07)) << 'm'; +#endif +} + + +/** Sets the background color. + * @param[in] color color code + * @param[in] os terminal output stream */ +void Terminal::bgcolor (int color, ostream &os) { + _bgcolor = color; +#ifdef __WIN32__ + HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE); + if (h != INVALID_HANDLE_VALUE) { + CONSOLE_SCREEN_BUFFER_INFO info; + GetConsoleScreenBufferInfo(h, &info); + if (_bgcolor == DEFAULT) + color = (_defaultColor & 0xf0) >> 4; + else { + // swap red and blue bits + color = (color & 0x0a) | ((color & 1) << 2) | ((color & 4) >> 2); + } + color = (info.wAttributes & 0x0f) | ((color & 0x0f) << 4); + SetConsoleTextAttribute(h, (DWORD)color); + } +#else + if (color != DEFAULT && color > 7) + color %= 8; + if (color == DEFAULT) { + os << "\x1B[0m"; + if (_fgcolor != DEFAULT) + fgcolor(_fgcolor, os); + } + else + os << "\x1B[" << (40+(color & 0x07)) << 'm'; +#endif +} + + +/** Disables or enables the console cursor + * @param[in] visible if false, the cursor is disabled, and enabled otherwise */ +void Terminal::cursor (bool visible) { +#ifdef __WIN32__ + HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE); + if (h != INVALID_HANDLE_VALUE) { + CONSOLE_CURSOR_INFO cursor_info; + cursor_info.bVisible = visible; + cursor_info.dwSize = _cursorHeight; + SetConsoleCursorInfo(h, &cursor_info); + } +#endif +} |