Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 169 insertions, 0 deletions

diff --git a/grub-core/kern/term.c b/grub-core/kern/term.c
new file mode 100644
index 0000000..14d5964
--- /dev/null
+++ b/grub-core/kern/term.c
@@ -0,0 +1,169 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2002,2003,2005,2007,2008,2009  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/term.h>
+#include <grub/err.h>
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/env.h>
+#include <grub/time.h>
+
+struct grub_term_output *grub_term_outputs_disabled;
+struct grub_term_input *grub_term_inputs_disabled;
+struct grub_term_output *grub_term_outputs;
+struct grub_term_input *grub_term_inputs;
+
+/* Current color state.  */
+grub_uint8_t grub_term_normal_color = GRUB_TERM_DEFAULT_NORMAL_COLOR;
+grub_uint8_t grub_term_highlight_color = GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR;
+
+void (*grub_term_poll_usb) (int wait_for_completion) = NULL;
+void (*grub_net_poll_cards_idle) (void) = NULL;
+
+/* Put a Unicode character.  */
+static void
+grub_putcode_dumb (grub_uint32_t code,
+		   struct grub_term_output *term)
+{
+  struct grub_unicode_glyph c =
+    {
+      .base = code,
+      .variant = 0,
+      .attributes = 0,
+      .ncomb = 0,
+      .estimated_width = 1
+    };
+
+  if (code == '\t' && term->getxy)
+    {
+      int n;
+
+      n = GRUB_TERM_TAB_WIDTH - ((term->getxy (term).x)
+				 % GRUB_TERM_TAB_WIDTH);
+      while (n--)
+	grub_putcode_dumb (' ', term);
+
+      return;
+    }
+
+  (term->putchar) (term, &c);
+  if (code == '\n')
+    grub_putcode_dumb ('\r', term);
+}
+
+static void
+grub_xputs_dumb (const char *str)
+{
+  for (; *str; str++)
+    {
+      grub_term_output_t term;
+      grub_uint32_t code = *str;
+      if (code > 0x7f)
+	code = '?';
+
+      FOR_ACTIVE_TERM_OUTPUTS(term)
+	grub_putcode_dumb (code, term);
+    }
+}
+
+void (*grub_xputs) (const char *str) = grub_xputs_dumb;
+
+int
+grub_getkey_noblock (void)
+{
+  grub_term_input_t term;
+
+  if (grub_term_poll_usb)
+    grub_term_poll_usb (0);
+
+  if (grub_net_poll_cards_idle)
+    grub_net_poll_cards_idle ();
+
+  FOR_ACTIVE_TERM_INPUTS(term)
+  {
+    int key = term->getkey (term);
+    if (key != GRUB_TERM_NO_KEY)
+      return key;
+  }
+
+  return GRUB_TERM_NO_KEY;
+}
+
+int
+grub_getkey (void)
+{
+  int ret;
+
+  grub_refresh ();
+
+  while (1)
+    {
+      ret = grub_getkey_noblock ();
+      if (ret != GRUB_TERM_NO_KEY)
+	return ret;
+      grub_cpu_idle ();
+    }
+}
+
+int
+grub_getkeystatus (void)
+{
+  int status = 0;
+  grub_term_input_t term;
+
+  if (grub_term_poll_usb)
+    grub_term_poll_usb (0);
+
+  FOR_ACTIVE_TERM_INPUTS(term)
+  {
+    if (term->getkeystatus)
+      status |= term->getkeystatus (term);
+  }
+
+  return status;
+}
+
+int
+grub_key_is_interrupt (int key)
+{
+  /*
+   * ESC sometimes is the BIOS setup hotkey and may be hard to discover, also
+   * check F4, which was chosen because is not used as a hotkey to enter the
+   * BIOS setup by any vendor.
+   */
+  if (key == GRUB_TERM_ESC || key == GRUB_TERM_KEY_F4)
+    return 1;
+
+  /*
+   * Pressing keys at the right time during boot is hard to time, also allow
+   * interrupting sleeps / the menu countdown by keeping shift pressed.
+   */
+  if (grub_getkeystatus() & (GRUB_TERM_STATUS_LSHIFT | GRUB_TERM_STATUS_RSHIFT))
+    return 1;
+
+  return 0;
+}
+
+void
+grub_refresh (void)
+{
+  struct grub_term_output *term;
+
+  FOR_ACTIVE_TERM_OUTPUTS(term)
+    grub_term_refresh (term);
+}