Oops, add missing normal/color.c.

2008-01-05 13:03:34 +00:00 · 2008-01-05 13:03:34 +00:00 · 34832091b3
commit 34832091b3
parent fb3581902c
1 changed files with 149 additions and 0 deletions
--- a/normal/color.c
+++ b/normal/color.c
@ -0,0 +1,149 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 1999,2000,2001,2002,2003,2004,2008  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 <grub/env.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/normal.h>
+#include <grub/term.h>
+
+/* Borrowed from GRUB Legacy */
+static char *color_list[16] =
+{
+  "black",
+  "blue",
+  "green",
+  "cyan",
+  "red",
+  "magenta",
+  "brown",
+  "light-gray",
+  "dark-gray",
+  "light-blue",
+  "light-green",
+  "light-cyan",
+  "light-red",
+  "light-magenta",
+  "yellow",
+  "white"
+};
+
+static int
+parse_color_name (grub_uint8_t *ret, char *name)
+{
+  grub_uint8_t i;
+  for (i = 0; i < sizeof (color_list) / sizeof (*color_list); i++)
+    if (! grub_strcmp (name, color_list[i]))
+      {
+        *ret = i;
+        return 0;
+      }
+  return -1;
+}
+
+void
+grub_parse_color_name_pair (grub_uint8_t *ret, char *name)
+{
+  grub_uint8_t fg, bg;
+  char *fg_name, *bg_name;
+
+  /* nothing specified by user */
+  if (name == NULL)
+    return;
+
+  fg_name = grub_strdup (name);
+  if (fg_name == NULL)
+    {
+      /* "out of memory" message was printed by grub_strdup() */
+      grub_wait_after_message ();
+      return;
+    }
+
+  bg_name = grub_strchr (fg_name, '/');
+  if (bg_name == NULL)
+    {
+      grub_printf ("Warning: syntax error (missing slash) in `%s'\n", fg_name);
+      grub_wait_after_message ();
+      goto free_and_return;
+    }
+
+  *(bg_name++) = '\0';
+
+  if (parse_color_name (&fg, fg_name) == -1)
+    {
+      grub_printf ("Warning: invalid foreground color `%s'\n", fg_name);
+      grub_wait_after_message ();
+      goto free_and_return;
+    }
+  if (parse_color_name (&bg, bg_name) == -1)
+    {
+      grub_printf ("Warning: invalid background color `%s'\n", bg_name);
+      grub_wait_after_message ();
+      goto free_and_return;
+    }
+
+  *ret = (bg << 4) | fg;
+
+free_and_return:
+  grub_free (fg_name);
+}
+
+/* Replace default `normal' colors with the ones specified by user (if any).  */
+char *
+grub_env_write_color_normal (struct grub_env_var *var __attribute__ ((unused)),
+			     const char *val)
+{
+  grub_uint8_t color_normal, color_highlight;
+
+  /* Use old settings in case grub_parse_color_name_pair() has no effect.  */
+  grub_getcolor (&color_normal, &color_highlight);
+
+  grub_parse_color_name_pair (&color_normal, val);
+
+  /* Reloads terminal `normal' and `highlight' colors.  */
+  grub_setcolor (color_normal, color_highlight);
+
+  /* Propagates `normal' color to terminal current color.  */
+  grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
+
+  return grub_strdup (val);
+}
+
+/* Replace default `highlight' colors with the ones specified by user (if any).  */
+char *
+grub_env_write_color_highlight (struct grub_env_var *var __attribute__ ((unused)),
+				const char *val)
+{
+  grub_uint8_t color_normal, color_highlight;
+
+  /* Use old settings in case grub_parse_color_name_pair() has no effect.  */
+  grub_getcolor (&color_normal, &color_highlight);
+
+  grub_parse_color_name_pair (&color_highlight, val);
+
+  /* Reloads terminal `normal' and `highlight' colors.  */
+  grub_setcolor (color_normal, color_highlight);
+
+  /* Propagates `normal' color to terminal current color.
+     Note: Using GRUB_TERM_COLOR_NORMAL here rather than
+     GRUB_TERM_COLOR_HIGHLIGHT is intentional.  We don't want to switch
+     to highlight state just because color was reloaded.  */
+  grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
+
+  return grub_strdup (val);
+}