149 lines
3.9 KiB
C
149 lines
3.9 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 1999,2000,2001,2002,2003,2004,2008 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/misc.h>
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#include <grub/mm.h>
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#include <grub/normal.h>
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#include <grub/term.h>
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/* Borrowed from GRUB Legacy */
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static char *color_list[16] =
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{
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"black",
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"blue",
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"green",
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"cyan",
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"red",
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"magenta",
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"brown",
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"light-gray",
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"dark-gray",
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"light-blue",
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"light-green",
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"light-cyan",
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"light-red",
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"light-magenta",
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"yellow",
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"white"
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};
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static int
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parse_color_name (grub_uint8_t *ret, char *name)
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{
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grub_uint8_t i;
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for (i = 0; i < sizeof (color_list) / sizeof (*color_list); i++)
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if (! grub_strcmp (name, color_list[i]))
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{
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*ret = i;
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return 0;
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}
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return -1;
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}
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void
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grub_parse_color_name_pair (grub_uint8_t *ret, const char *name)
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{
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grub_uint8_t fg, bg;
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char *fg_name, *bg_name;
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/* nothing specified by user */
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if (name == NULL)
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return;
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fg_name = grub_strdup (name);
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if (fg_name == NULL)
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{
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/* "out of memory" message was printed by grub_strdup() */
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grub_wait_after_message ();
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return;
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}
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bg_name = grub_strchr (fg_name, '/');
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if (bg_name == NULL)
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{
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grub_printf ("Warning: syntax error (missing slash) in `%s'\n", fg_name);
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grub_wait_after_message ();
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goto free_and_return;
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}
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*(bg_name++) = '\0';
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if (parse_color_name (&fg, fg_name) == -1)
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{
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grub_printf ("Warning: invalid foreground color `%s'\n", fg_name);
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grub_wait_after_message ();
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goto free_and_return;
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}
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if (parse_color_name (&bg, bg_name) == -1)
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{
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grub_printf ("Warning: invalid background color `%s'\n", bg_name);
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grub_wait_after_message ();
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goto free_and_return;
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}
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*ret = (bg << 4) | fg;
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free_and_return:
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grub_free (fg_name);
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}
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/* Replace default `normal' colors with the ones specified by user (if any). */
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char *
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grub_env_write_color_normal (struct grub_env_var *var __attribute__ ((unused)),
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const char *val)
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{
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grub_uint8_t color_normal, color_highlight;
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/* Use old settings in case grub_parse_color_name_pair() has no effect. */
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grub_getcolor (&color_normal, &color_highlight);
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grub_parse_color_name_pair (&color_normal, val);
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/* Reloads terminal `normal' and `highlight' colors. */
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grub_setcolor (color_normal, color_highlight);
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/* Propagates `normal' color to terminal current color. */
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grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
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return grub_strdup (val);
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}
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/* Replace default `highlight' colors with the ones specified by user (if any). */
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char *
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grub_env_write_color_highlight (struct grub_env_var *var __attribute__ ((unused)),
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const char *val)
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{
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grub_uint8_t color_normal, color_highlight;
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/* Use old settings in case grub_parse_color_name_pair() has no effect. */
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grub_getcolor (&color_normal, &color_highlight);
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grub_parse_color_name_pair (&color_highlight, val);
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/* Reloads terminal `normal' and `highlight' colors. */
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grub_setcolor (color_normal, color_highlight);
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/* Propagates `normal' color to terminal current color.
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Note: Using GRUB_TERM_COLOR_NORMAL here rather than
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GRUB_TERM_COLOR_HIGHLIGHT is intentional. We don't want to switch
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to highlight state just because color was reloaded. */
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grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
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return grub_strdup (val);
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}
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