136 lines
2.7 KiB
C
136 lines
2.7 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2003,2005,2007,2008,2009 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/term.h>
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#include <grub/err.h>
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#include <grub/mm.h>
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#include <grub/misc.h>
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#include <grub/env.h>
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#include <grub/time.h>
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struct grub_term_output *grub_term_outputs_disabled;
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struct grub_term_input *grub_term_inputs_disabled;
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struct grub_term_output *grub_term_outputs;
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struct grub_term_input *grub_term_inputs;
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/* Put a Unicode character. */
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static void
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grub_putcode_dumb (grub_uint32_t code,
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struct grub_term_output *term)
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{
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struct grub_unicode_glyph c =
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{
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.base = code,
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.variant = 0,
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.attributes = 0,
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.ncomb = 0,
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.combining = 0,
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.estimated_width = 1
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};
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if (code == '\t' && term->getxy)
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{
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int n;
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n = 8 - ((term->getxy (term) >> 8) & 7);
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while (n--)
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grub_putcode_dumb (' ', term);
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return;
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}
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(term->putchar) (term, &c);
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if (code == '\n')
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grub_putcode_dumb ('\r', term);
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}
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static void
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grub_xputs_dumb (const char *str)
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{
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for (; *str; str++)
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{
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grub_term_output_t term;
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grub_uint32_t code = *str;
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if (code > 0x7f)
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code = '?';
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FOR_ACTIVE_TERM_OUTPUTS(term)
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grub_putcode_dumb (code, term);
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}
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}
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void (*grub_xputs) (const char *str) = grub_xputs_dumb;
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int
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grub_getkey (void)
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{
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grub_term_input_t term;
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grub_refresh ();
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while (1)
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{
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FOR_ACTIVE_TERM_INPUTS(term)
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{
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int key = term->checkkey (term);
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if (key != -1)
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return term->getkey (term);
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}
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grub_cpu_idle ();
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}
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}
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int
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grub_checkkey (void)
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{
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grub_term_input_t term;
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FOR_ACTIVE_TERM_INPUTS(term)
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{
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int key = term->checkkey (term);
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if (key != -1)
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return key;
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}
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return -1;
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}
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int
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grub_getkeystatus (void)
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{
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int status = 0;
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grub_term_input_t term;
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FOR_ACTIVE_TERM_INPUTS(term)
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{
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if (term->getkeystatus)
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status |= term->getkeystatus (term);
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}
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return status;
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}
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void
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grub_refresh (void)
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{
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struct grub_term_output *term;
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FOR_ACTIVE_TERM_OUTPUTS(term)
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grub_term_refresh (term);
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}
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