diff options
Diffstat (limited to 'grub-core/kern/emu/console.c')
| -rw-r--r-- | grub-core/kern/emu/console.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/grub-core/kern/emu/console.c b/grub-core/kern/emu/console.c new file mode 100644 index 0000000..7fd1fc0 --- /dev/null +++ b/grub-core/kern/emu/console.c @@ -0,0 +1,293 @@ +/* console.c -- Ncurses console for GRUB. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2003,2005,2007,2008 Free Software Foundation, Inc. + * + * GRUB 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. + * + * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <config.h> +#include <config-util.h> + +/* For compatibility. */ +#ifndef A_NORMAL +# define A_NORMAL 0 +#endif /* ! A_NORMAL */ +#ifndef A_STANDOUT +# define A_STANDOUT 0 +#endif /* ! A_STANDOUT */ + +#include <grub/emu/console.h> +#include <grub/term.h> +#include <grub/types.h> + +#if defined(HAVE_NCURSES_CURSES_H) +# include <ncurses/curses.h> +#elif defined(HAVE_NCURSES_H) +# include <ncurses.h> +#elif defined(HAVE_CURSES_H) +# include <curses.h> +#else +#error What the hell? +#endif + +static int grub_console_attr = A_NORMAL; + +grub_uint8_t grub_console_cur_color = 7; + +static const grub_uint8_t grub_console_standard_color = 0x7; + +#define NUM_COLORS 8 + +static grub_uint8_t color_map[NUM_COLORS] = +{ + COLOR_BLACK, + COLOR_BLUE, + COLOR_GREEN, + COLOR_CYAN, + COLOR_RED, + COLOR_MAGENTA, + COLOR_YELLOW, + COLOR_WHITE +}; + +static int use_color; + +static void +grub_ncurses_putchar (struct grub_term_output *term __attribute__ ((unused)), + const struct grub_unicode_glyph *c) +{ + addch (c->base | grub_console_attr); +} + +static void +grub_ncurses_setcolorstate (struct grub_term_output *term, + grub_term_color_state state) +{ + switch (state) + { + case GRUB_TERM_COLOR_STANDARD: + grub_console_cur_color = grub_console_standard_color; + grub_console_attr = A_NORMAL; + break; + case GRUB_TERM_COLOR_NORMAL: + grub_console_cur_color = term->normal_color; + grub_console_attr = A_NORMAL; + break; + case GRUB_TERM_COLOR_HIGHLIGHT: + grub_console_cur_color = term->highlight_color; + grub_console_attr = A_STANDOUT; + break; + default: + break; + } + + if (use_color) + { + grub_uint8_t fg, bg; + + fg = (grub_console_cur_color & 7); + bg = (grub_console_cur_color >> 4) & 7; + + grub_console_attr = (grub_console_cur_color & 8) ? A_BOLD : A_NORMAL; + color_set ((bg << 3) + fg, 0); + } +} + +static int +grub_ncurses_getkey (struct grub_term_input *term __attribute__ ((unused))) +{ + int c; + + wtimeout (stdscr, 100); + c = getch (); + + switch (c) + { + case ERR: + return -1; + case KEY_LEFT: + c = GRUB_TERM_KEY_LEFT; + break; + + case KEY_RIGHT: + c = GRUB_TERM_KEY_RIGHT; + break; + + case KEY_UP: + c = GRUB_TERM_KEY_UP; + break; + + case KEY_DOWN: + c = GRUB_TERM_KEY_DOWN; + break; + + case KEY_IC: + c = 24; + break; + + case KEY_DC: + c = GRUB_TERM_KEY_DC; + break; + + case KEY_BACKSPACE: + /* XXX: For some reason ncurses on xterm does not return + KEY_BACKSPACE. */ + case 127: + c = '\b'; + break; + + case KEY_HOME: + c = GRUB_TERM_KEY_HOME; + break; + + case KEY_END: + c = GRUB_TERM_KEY_END; + break; + + case KEY_NPAGE: + c = GRUB_TERM_KEY_NPAGE; + break; + + case KEY_PPAGE: + c = GRUB_TERM_KEY_PPAGE; + break; + } + + return c; +} + +static grub_uint16_t +grub_ncurses_getxy (struct grub_term_output *term __attribute__ ((unused))) +{ + int x; + int y; + + getyx (stdscr, y, x); + + return (x << 8) | y; +} + +static grub_uint16_t +grub_ncurses_getwh (struct grub_term_output *term __attribute__ ((unused))) +{ + int x; + int y; + + getmaxyx (stdscr, y, x); + + return (x << 8) | y; +} + +static void +grub_ncurses_gotoxy (struct grub_term_output *term __attribute__ ((unused)), + grub_uint8_t x, grub_uint8_t y) +{ + move (y, x); +} + +static void +grub_ncurses_cls (struct grub_term_output *term __attribute__ ((unused))) +{ + clear (); + refresh (); +} + +static void +grub_ncurses_setcursor (struct grub_term_output *term __attribute__ ((unused)), + int on) +{ + curs_set (on ? 1 : 0); +} + +static void +grub_ncurses_refresh (struct grub_term_output *term __attribute__ ((unused))) +{ + refresh (); +} + +static grub_err_t +grub_ncurses_init (struct grub_term_output *term __attribute__ ((unused))) +{ + initscr (); + raw (); + noecho (); + scrollok (stdscr, TRUE); + + nonl (); + intrflush (stdscr, FALSE); + keypad (stdscr, TRUE); + + if (has_colors ()) + { + start_color (); + + if ((COLORS >= NUM_COLORS) && (COLOR_PAIRS >= NUM_COLORS * NUM_COLORS)) + { + int i, j, n; + + n = 0; + for (i = 0; i < NUM_COLORS; i++) + for (j = 0; j < NUM_COLORS; j++) + init_pair(n++, color_map[j], color_map[i]); + + use_color = 1; + } + } + + return 0; +} + +static grub_err_t +grub_ncurses_fini (struct grub_term_output *term __attribute__ ((unused))) +{ + endwin (); + return 0; +} + + +static struct grub_term_input grub_ncurses_term_input = + { + .name = "console", + .getkey = grub_ncurses_getkey, + }; + +static struct grub_term_output grub_ncurses_term_output = + { + .name = "console", + .init = grub_ncurses_init, + .fini = grub_ncurses_fini, + .putchar = grub_ncurses_putchar, + .getxy = grub_ncurses_getxy, + .getwh = grub_ncurses_getwh, + .gotoxy = grub_ncurses_gotoxy, + .cls = grub_ncurses_cls, + .setcolorstate = grub_ncurses_setcolorstate, + .setcursor = grub_ncurses_setcursor, + .refresh = grub_ncurses_refresh, + .flags = GRUB_TERM_CODE_TYPE_ASCII + }; + +void +grub_console_init (void) +{ + grub_term_register_output ("console", &grub_ncurses_term_output); + grub_term_register_input ("console", &grub_ncurses_term_input); +} + +void +grub_console_fini (void) +{ + grub_ncurses_fini (&grub_ncurses_term_output); +} |