bfd5e52b1d
* normal/menu_text.c (STANDARD_MARGIN): New macro. (print_message_indented): Add `margin_left' and `margin_right' parameters. (print_message): Update `print_message_indented' calls. Adds '\n' to the strings. (print_timeout): Use `print_message_indented' to print the message. Deletes `second_stage' parameter. (run_menu): Update `print_timeout' calls.
728 lines
18 KiB
C
728 lines
18 KiB
C
/* menu_text.c - Basic text menu implementation. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/normal.h>
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#include <grub/term.h>
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#include <grub/misc.h>
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#include <grub/loader.h>
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#include <grub/mm.h>
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#include <grub/time.h>
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#include <grub/env.h>
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#include <grub/menu_viewer.h>
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#include <grub/i18n.h>
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/* Time to delay after displaying an error message about a default/fallback
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entry failing to boot. */
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#define DEFAULT_ENTRY_ERROR_DELAY_MS 2500
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#define STANDARD_MARGIN 6
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static grub_uint8_t grub_color_menu_normal;
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static grub_uint8_t grub_color_menu_highlight;
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/* Wait until the user pushes any key so that the user
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can see what happened. */
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void
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grub_wait_after_message (void)
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{
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grub_putchar ('\n');
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grub_printf_ (N_("Press any key to continue..."));
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(void) grub_getkey ();
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grub_putchar ('\n');
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}
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static void
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print_spaces (int number_spaces)
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{
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int i;
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for (i = 0; i < number_spaces; i++)
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grub_putchar (' ');
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}
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static void
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grub_print_ucs4 (const grub_uint32_t * str,
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const grub_uint32_t * last_position)
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{
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while (str < last_position)
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{
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grub_putcode (*str);
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str++;
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}
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}
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static grub_ssize_t
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getstringwidth (grub_uint32_t * str, const grub_uint32_t * last_position)
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{
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grub_ssize_t width = 0;
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while (str < last_position)
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{
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width += grub_getcharwidth (*str);
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str++;
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}
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return width;
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}
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static void
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print_message_indented (const char *msg, int margin_left, int margin_right)
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{
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int line_len;
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line_len = GRUB_TERM_WIDTH - grub_getcharwidth ('m') *
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(margin_left + margin_right);
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grub_uint32_t *unicode_msg;
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grub_ssize_t msg_len = grub_strlen (msg);
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unicode_msg = grub_malloc (msg_len * sizeof (*unicode_msg));
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msg_len = grub_utf8_to_ucs4 (unicode_msg, msg_len,
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(grub_uint8_t *) msg, -1, 0);
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if (!unicode_msg)
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{
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grub_printf ("print_message_indented ERROR1: %s", msg);
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return;
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}
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if (msg_len < 0)
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{
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grub_printf ("print_message_indented ERROR2: %s", msg);
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grub_free (unicode_msg);
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return;
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}
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const grub_uint32_t *last_position = unicode_msg + msg_len;
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grub_uint32_t *current_position = unicode_msg;
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grub_uint32_t *next_new_line = unicode_msg;
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int first_loop = 1;
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while (current_position < last_position)
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{
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if (! first_loop)
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grub_putchar ('\n');
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next_new_line = (grub_uint32_t *) last_position;
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while (getstringwidth (current_position, next_new_line) > line_len
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|| (*next_new_line != ' ' && next_new_line > current_position &&
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next_new_line != last_position))
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{
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next_new_line--;
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}
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if (next_new_line == current_position)
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{
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next_new_line = (next_new_line + line_len > last_position) ?
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(grub_uint32_t *) last_position : next_new_line + line_len;
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}
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print_spaces (margin_left);
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grub_print_ucs4 (current_position, next_new_line);
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next_new_line++;
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current_position = next_new_line;
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first_loop = 0;
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}
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grub_free (unicode_msg);
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}
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static void
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draw_border (void)
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{
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unsigned i;
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grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
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grub_gotoxy (GRUB_TERM_MARGIN, GRUB_TERM_TOP_BORDER_Y);
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grub_putcode (GRUB_TERM_DISP_UL);
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for (i = 0; i < (unsigned) GRUB_TERM_BORDER_WIDTH - 2; i++)
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grub_putcode (GRUB_TERM_DISP_HLINE);
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grub_putcode (GRUB_TERM_DISP_UR);
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for (i = 0; i < (unsigned) GRUB_TERM_NUM_ENTRIES; i++)
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{
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grub_gotoxy (GRUB_TERM_MARGIN, GRUB_TERM_TOP_BORDER_Y + i + 1);
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grub_putcode (GRUB_TERM_DISP_VLINE);
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grub_gotoxy (GRUB_TERM_MARGIN + GRUB_TERM_BORDER_WIDTH - 1,
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GRUB_TERM_TOP_BORDER_Y + i + 1);
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grub_putcode (GRUB_TERM_DISP_VLINE);
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}
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grub_gotoxy (GRUB_TERM_MARGIN,
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GRUB_TERM_TOP_BORDER_Y + GRUB_TERM_NUM_ENTRIES + 1);
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grub_putcode (GRUB_TERM_DISP_LL);
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for (i = 0; i < (unsigned) GRUB_TERM_BORDER_WIDTH - 2; i++)
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grub_putcode (GRUB_TERM_DISP_HLINE);
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grub_putcode (GRUB_TERM_DISP_LR);
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grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
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grub_gotoxy (GRUB_TERM_MARGIN,
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(GRUB_TERM_TOP_BORDER_Y + GRUB_TERM_NUM_ENTRIES
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+ GRUB_TERM_MARGIN + 1));
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}
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static void
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print_message (int nested, int edit)
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{
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grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
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if (edit)
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{
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grub_putchar ('\n');
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print_message_indented (_("Minimum Emacs-like screen editing is \
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supported. TAB lists completions. Press Ctrl-x to boot, Ctrl-c for a \
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command-line or ESC to return menu."), STANDARD_MARGIN, STANDARD_MARGIN);
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}
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else
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{
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const char *msg = _("Use the %C and %C keys to select which \
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entry is highlighted.\n");
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char *msg_translated =
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grub_malloc (sizeof (char) * grub_strlen (msg) + 1);
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grub_sprintf (msg_translated, msg, (grub_uint32_t) GRUB_TERM_DISP_UP,
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(grub_uint32_t) GRUB_TERM_DISP_DOWN);
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grub_putchar ('\n');
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print_message_indented (msg_translated, STANDARD_MARGIN, STANDARD_MARGIN);
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grub_free (msg_translated);
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print_message_indented (_("Press enter to boot the selected OS, \
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\'e\' to edit the commands before booting or \'c\' for a command-line.\n"), STANDARD_MARGIN, STANDARD_MARGIN);
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if (nested)
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{
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grub_printf ("\n ");
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grub_printf_ (N_("ESC to return previous menu."));
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}
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}
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}
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static void
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print_entry (int y, int highlight, grub_menu_entry_t entry)
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{
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int x;
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const char *title;
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grub_size_t title_len;
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grub_ssize_t len;
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grub_uint32_t *unicode_title;
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grub_ssize_t i;
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grub_uint8_t old_color_normal, old_color_highlight;
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title = entry ? entry->title : "";
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title_len = grub_strlen (title);
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unicode_title = grub_malloc (title_len * sizeof (*unicode_title));
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if (! unicode_title)
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/* XXX How to show this error? */
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return;
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len = grub_utf8_to_ucs4 (unicode_title, title_len,
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(grub_uint8_t *) title, -1, 0);
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if (len < 0)
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{
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/* It is an invalid sequence. */
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grub_free (unicode_title);
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return;
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}
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grub_getcolor (&old_color_normal, &old_color_highlight);
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grub_setcolor (grub_color_menu_normal, grub_color_menu_highlight);
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grub_setcolorstate (highlight
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? GRUB_TERM_COLOR_HIGHLIGHT
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: GRUB_TERM_COLOR_NORMAL);
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grub_gotoxy (GRUB_TERM_LEFT_BORDER_X + GRUB_TERM_MARGIN, y);
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for (x = GRUB_TERM_LEFT_BORDER_X + GRUB_TERM_MARGIN + 1, i = 0;
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x < GRUB_TERM_LEFT_BORDER_X + GRUB_TERM_BORDER_WIDTH - GRUB_TERM_MARGIN;
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i++)
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{
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if (i < len
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&& x <= (GRUB_TERM_LEFT_BORDER_X + GRUB_TERM_BORDER_WIDTH
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- GRUB_TERM_MARGIN - 1))
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{
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grub_ssize_t width;
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width = grub_getcharwidth (unicode_title[i]);
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if (x + width > (GRUB_TERM_LEFT_BORDER_X + GRUB_TERM_BORDER_WIDTH
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- GRUB_TERM_MARGIN - 1))
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grub_putcode (GRUB_TERM_DISP_RIGHT);
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else
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grub_putcode (unicode_title[i]);
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x += width;
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}
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else
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{
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grub_putchar (' ');
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x++;
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}
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}
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grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
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grub_putchar (' ');
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grub_gotoxy (GRUB_TERM_CURSOR_X, y);
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grub_setcolor (old_color_normal, old_color_highlight);
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grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
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grub_free (unicode_title);
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}
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static void
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print_entries (grub_menu_t menu, int first, int offset)
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{
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grub_menu_entry_t e;
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int i;
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grub_gotoxy (GRUB_TERM_LEFT_BORDER_X + GRUB_TERM_BORDER_WIDTH,
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GRUB_TERM_FIRST_ENTRY_Y);
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if (first)
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grub_putcode (GRUB_TERM_DISP_UP);
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else
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grub_putchar (' ');
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e = grub_menu_get_entry (menu, first);
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for (i = 0; i < GRUB_TERM_NUM_ENTRIES; i++)
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{
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print_entry (GRUB_TERM_FIRST_ENTRY_Y + i, offset == i, e);
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if (e)
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e = e->next;
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}
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grub_gotoxy (GRUB_TERM_LEFT_BORDER_X + GRUB_TERM_BORDER_WIDTH,
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GRUB_TERM_TOP_BORDER_Y + GRUB_TERM_NUM_ENTRIES);
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if (e)
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grub_putcode (GRUB_TERM_DISP_DOWN);
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else
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grub_putchar (' ');
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grub_gotoxy (GRUB_TERM_CURSOR_X, GRUB_TERM_FIRST_ENTRY_Y + offset);
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}
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/* Initialize the screen. If NESTED is non-zero, assume that this menu
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is run from another menu or a command-line. If EDIT is non-zero, show
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a message for the menu entry editor. */
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void
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grub_menu_init_page (int nested, int edit)
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{
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grub_uint8_t old_color_normal, old_color_highlight;
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grub_getcolor (&old_color_normal, &old_color_highlight);
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/* By default, use the same colors for the menu. */
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grub_color_menu_normal = old_color_normal;
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grub_color_menu_highlight = old_color_highlight;
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/* Then give user a chance to replace them. */
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grub_parse_color_name_pair (&grub_color_menu_normal, grub_env_get ("menu_color_normal"));
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grub_parse_color_name_pair (&grub_color_menu_highlight, grub_env_get ("menu_color_highlight"));
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grub_normal_init_page ();
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grub_setcolor (grub_color_menu_normal, grub_color_menu_highlight);
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draw_border ();
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grub_setcolor (old_color_normal, old_color_highlight);
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print_message (nested, edit);
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}
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/* Get the entry number from the variable NAME. */
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static int
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get_entry_number (const char *name)
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{
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char *val;
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int entry;
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val = grub_env_get (name);
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if (! val)
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return -1;
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grub_error_push ();
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entry = (int) grub_strtoul (val, 0, 0);
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if (grub_errno != GRUB_ERR_NONE)
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{
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grub_errno = GRUB_ERR_NONE;
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entry = -1;
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}
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grub_error_pop ();
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return entry;
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}
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static void
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print_timeout (int timeout, int offset)
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{
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const char *msg =
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_("The highlighted entry will be booted automatically in %ds.");
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grub_gotoxy (0, GRUB_TERM_HEIGHT - 3);
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char *msg_translated =
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grub_malloc (sizeof (char) * grub_strlen (msg) + 5);
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grub_sprintf (msg_translated, msg, timeout);
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print_message_indented (msg_translated, 3, 0);
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int posx;
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posx = grub_getxy() >> 8;
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print_spaces (GRUB_TERM_WIDTH - posx - 1);
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grub_gotoxy (GRUB_TERM_CURSOR_X, GRUB_TERM_FIRST_ENTRY_Y + offset);
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grub_refresh ();
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}
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/* Show the menu and handle menu entry selection. Returns the menu entry
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index that should be executed or -1 if no entry should be executed (e.g.,
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Esc pressed to exit a sub-menu or switching menu viewers).
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If the return value is not -1, then *AUTO_BOOT is nonzero iff the menu
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entry to be executed is a result of an automatic default selection because
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of the timeout. */
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static int
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run_menu (grub_menu_t menu, int nested, int *auto_boot)
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{
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int first, offset;
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grub_uint64_t saved_time;
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int default_entry;
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int timeout;
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first = 0;
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default_entry = get_entry_number ("default");
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/* If DEFAULT_ENTRY is not within the menu entries, fall back to
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the first entry. */
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if (default_entry < 0 || default_entry >= menu->size)
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default_entry = 0;
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/* If timeout is 0, drawing is pointless (and ugly). */
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if (grub_menu_get_timeout () == 0)
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{
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*auto_boot = 1;
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return default_entry;
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}
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offset = default_entry;
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if (offset > GRUB_TERM_NUM_ENTRIES - 1)
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{
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first = offset - (GRUB_TERM_NUM_ENTRIES - 1);
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offset = GRUB_TERM_NUM_ENTRIES - 1;
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}
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/* Initialize the time. */
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saved_time = grub_get_time_ms ();
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refresh:
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grub_setcursor (0);
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grub_menu_init_page (nested, 0);
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print_entries (menu, first, offset);
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grub_refresh ();
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timeout = grub_menu_get_timeout ();
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if (timeout > 0)
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print_timeout (timeout, offset);
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while (1)
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{
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int c;
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timeout = grub_menu_get_timeout ();
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if (timeout > 0)
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{
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grub_uint64_t current_time;
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current_time = grub_get_time_ms ();
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if (current_time - saved_time >= 1000)
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{
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timeout--;
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grub_menu_set_timeout (timeout);
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saved_time = current_time;
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print_timeout (timeout, offset);
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}
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}
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if (timeout == 0)
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{
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grub_env_unset ("timeout");
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*auto_boot = 1;
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return default_entry;
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}
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if (grub_checkkey () >= 0 || timeout < 0)
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{
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c = GRUB_TERM_ASCII_CHAR (grub_getkey ());
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if (timeout >= 0)
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{
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grub_gotoxy (0, GRUB_TERM_HEIGHT - 3);
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print_spaces (GRUB_TERM_WIDTH - 1);
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grub_env_unset ("timeout");
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grub_env_unset ("fallback");
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grub_gotoxy (GRUB_TERM_CURSOR_X, GRUB_TERM_FIRST_ENTRY_Y + offset);
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}
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switch (c)
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{
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case GRUB_TERM_HOME:
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first = 0;
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offset = 0;
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print_entries (menu, first, offset);
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break;
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case GRUB_TERM_END:
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offset = menu->size - 1;
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if (offset > GRUB_TERM_NUM_ENTRIES - 1)
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{
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first = offset - (GRUB_TERM_NUM_ENTRIES - 1);
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offset = GRUB_TERM_NUM_ENTRIES - 1;
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}
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print_entries (menu, first, offset);
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break;
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case GRUB_TERM_UP:
|
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case '^':
|
|
if (offset > 0)
|
|
{
|
|
print_entry (GRUB_TERM_FIRST_ENTRY_Y + offset, 0,
|
|
grub_menu_get_entry (menu, first + offset));
|
|
offset--;
|
|
print_entry (GRUB_TERM_FIRST_ENTRY_Y + offset, 1,
|
|
grub_menu_get_entry (menu, first + offset));
|
|
}
|
|
else if (first > 0)
|
|
{
|
|
first--;
|
|
print_entries (menu, first, offset);
|
|
}
|
|
break;
|
|
|
|
case GRUB_TERM_DOWN:
|
|
case 'v':
|
|
if (menu->size > first + offset + 1)
|
|
{
|
|
if (offset < GRUB_TERM_NUM_ENTRIES - 1)
|
|
{
|
|
print_entry (GRUB_TERM_FIRST_ENTRY_Y + offset, 0,
|
|
grub_menu_get_entry (menu, first + offset));
|
|
offset++;
|
|
print_entry (GRUB_TERM_FIRST_ENTRY_Y + offset, 1,
|
|
grub_menu_get_entry (menu, first + offset));
|
|
}
|
|
else
|
|
{
|
|
first++;
|
|
print_entries (menu, first, offset);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case GRUB_TERM_PPAGE:
|
|
if (first == 0)
|
|
{
|
|
offset = 0;
|
|
}
|
|
else
|
|
{
|
|
first -= GRUB_TERM_NUM_ENTRIES;
|
|
|
|
if (first < 0)
|
|
{
|
|
offset += first;
|
|
first = 0;
|
|
}
|
|
}
|
|
print_entries (menu, first, offset);
|
|
break;
|
|
|
|
case GRUB_TERM_NPAGE:
|
|
if (offset == 0)
|
|
{
|
|
offset += GRUB_TERM_NUM_ENTRIES - 1;
|
|
if (first + offset >= menu->size)
|
|
{
|
|
offset = menu->size - first - 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
first += GRUB_TERM_NUM_ENTRIES;
|
|
|
|
if (first + offset >= menu->size)
|
|
{
|
|
first -= GRUB_TERM_NUM_ENTRIES;
|
|
offset += GRUB_TERM_NUM_ENTRIES;
|
|
|
|
if (offset > menu->size - 1 ||
|
|
offset > GRUB_TERM_NUM_ENTRIES - 1)
|
|
{
|
|
offset = menu->size - first - 1;
|
|
}
|
|
if (offset > GRUB_TERM_NUM_ENTRIES)
|
|
{
|
|
first += offset - GRUB_TERM_NUM_ENTRIES + 1;
|
|
offset = GRUB_TERM_NUM_ENTRIES - 1;
|
|
}
|
|
}
|
|
}
|
|
print_entries (menu, first, offset);
|
|
break;
|
|
|
|
case '\n':
|
|
case '\r':
|
|
case 6:
|
|
grub_setcursor (1);
|
|
*auto_boot = 0;
|
|
return first + offset;
|
|
|
|
case '\e':
|
|
if (nested)
|
|
{
|
|
grub_setcursor (1);
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
case 'c':
|
|
grub_cmdline_run (1);
|
|
goto refresh;
|
|
|
|
case 'e':
|
|
{
|
|
grub_menu_entry_t e = grub_menu_get_entry (menu, first + offset);
|
|
if (e)
|
|
grub_menu_entry_run (e);
|
|
}
|
|
goto refresh;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
grub_refresh ();
|
|
}
|
|
}
|
|
|
|
/* Never reach here. */
|
|
return -1;
|
|
}
|
|
|
|
/* Callback invoked immediately before a menu entry is executed. */
|
|
static void
|
|
notify_booting (grub_menu_entry_t entry,
|
|
void *userdata __attribute__((unused)))
|
|
{
|
|
grub_printf (" ");
|
|
grub_printf_ (N_("Booting \'%s\'"), entry->title);
|
|
grub_printf ("\n\n");
|
|
}
|
|
|
|
/* Callback invoked when a default menu entry executed because of a timeout
|
|
has failed and an attempt will be made to execute the next fallback
|
|
entry, ENTRY. */
|
|
static void
|
|
notify_fallback (grub_menu_entry_t entry,
|
|
void *userdata __attribute__((unused)))
|
|
{
|
|
grub_printf ("\n ");
|
|
grub_printf_ (N_("Falling back to \'%s\'"), entry->title);
|
|
grub_printf ("\n\n");
|
|
grub_millisleep (DEFAULT_ENTRY_ERROR_DELAY_MS);
|
|
}
|
|
|
|
/* Callback invoked when a menu entry has failed and there is no remaining
|
|
fallback entry to attempt. */
|
|
static void
|
|
notify_execution_failure (void *userdata __attribute__((unused)))
|
|
{
|
|
if (grub_errno != GRUB_ERR_NONE)
|
|
{
|
|
grub_print_error ();
|
|
grub_errno = GRUB_ERR_NONE;
|
|
}
|
|
grub_printf ("\n ");
|
|
grub_printf_ (N_("Failed to boot default entries.\n"));
|
|
grub_wait_after_message ();
|
|
}
|
|
|
|
/* Callbacks used by the text menu to provide user feedback when menu entries
|
|
are executed. */
|
|
static struct grub_menu_execute_callback execution_callback =
|
|
{
|
|
.notify_booting = notify_booting,
|
|
.notify_fallback = notify_fallback,
|
|
.notify_failure = notify_execution_failure
|
|
};
|
|
|
|
static grub_err_t
|
|
show_text_menu (grub_menu_t menu, int nested)
|
|
{
|
|
while (1)
|
|
{
|
|
int boot_entry;
|
|
grub_menu_entry_t e;
|
|
int auto_boot;
|
|
|
|
boot_entry = run_menu (menu, nested, &auto_boot);
|
|
if (boot_entry < 0)
|
|
break;
|
|
|
|
e = grub_menu_get_entry (menu, boot_entry);
|
|
if (! e)
|
|
continue; /* Menu is empty. */
|
|
|
|
grub_cls ();
|
|
grub_setcursor (1);
|
|
|
|
if (auto_boot)
|
|
{
|
|
grub_menu_execute_with_fallback (menu, e, &execution_callback, 0);
|
|
}
|
|
else
|
|
{
|
|
grub_errno = GRUB_ERR_NONE;
|
|
grub_menu_execute_entry (e);
|
|
if (grub_errno != GRUB_ERR_NONE)
|
|
{
|
|
grub_print_error ();
|
|
grub_errno = GRUB_ERR_NONE;
|
|
grub_wait_after_message ();
|
|
}
|
|
}
|
|
}
|
|
|
|
return GRUB_ERR_NONE;
|
|
}
|
|
|
|
struct grub_menu_viewer grub_normal_text_menu_viewer =
|
|
{
|
|
.name = "text",
|
|
.show_menu = show_text_menu
|
|
};
|