160 lines
3.1 KiB
C
160 lines
3.1 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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void (*grub_newline_hook) (void) = NULL;
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/* Put a Unicode character. */
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void
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grub_putcode (grub_uint32_t code, struct grub_term_output *term)
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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 () >> 8) & 7);
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while (n--)
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grub_putcode (' ', term);
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return;
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}
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(term->putchar) (code);
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if (code == '\n')
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(term->putchar) ('\r');
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}
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/* Put a character. C is one byte of a UTF-8 stream.
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This function gathers bytes until a valid Unicode character is found. */
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void
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grub_putchar (int c)
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{
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static grub_size_t size = 0;
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static grub_uint8_t buf[6];
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grub_uint32_t code;
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grub_size_t ret;
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buf[size++] = c;
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ret = grub_utf8_to_ucs4 (&code, 1, buf, size, 0);
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if (ret != 0)
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{
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struct grub_term_output *term;
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size = 0;
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FOR_ACTIVE_TERM_OUTPUTS(term)
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grub_putcode (code, term);
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if (code == '\n' && grub_newline_hook)
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grub_newline_hook ();
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}
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}
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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 ();
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if (key != -1)
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return term->getkey ();
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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 ();
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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 ();
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}
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return status;
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}
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void
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grub_cls (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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{
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if ((term->flags & GRUB_TERM_DUMB) || (grub_env_get ("debug")))
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{
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grub_putcode ('\n', term);
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grub_term_refresh (term);
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}
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else
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(term->cls) ();
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}
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}
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void
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grub_setcolorstate (grub_term_color_state state)
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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_setcolorstate (term, state);
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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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