850 lines
18 KiB
C
850 lines
18 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/misc.h>
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#include <grub/mm.h>
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#include <grub/file.h>
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#include <grub/dl.h>
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#include <grub/env.h>
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#include <grub/normal.h>
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#include <grub/charset.h>
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struct term_state
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{
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struct term_state *next;
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const struct grub_unicode_glyph *backlog_glyphs;
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const grub_uint32_t *backlog_ucs4;
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grub_size_t backlog_len;
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void *free;
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int num_lines;
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char *term_name;
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};
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static struct term_state *term_states = NULL;
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/* If the more pager is active. */
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static int grub_more;
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static void
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putcode_real (grub_uint32_t code, struct grub_term_output *term);
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void
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grub_normal_reset_more (void)
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{
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static struct term_state *state;
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for (state = term_states; state; state = state->next)
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state->num_lines = 0;
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}
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static void
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print_more (void)
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{
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char key;
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grub_uint16_t *pos;
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grub_term_output_t term;
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grub_uint32_t *unicode_str, *unicode_last_position;
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pos = grub_term_save_pos ();
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grub_utf8_to_ucs4_alloc ("--MORE--", &unicode_str,
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&unicode_last_position);
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if (!unicode_str)
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{
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grub_errno = GRUB_ERR_NONE;
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return;
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}
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grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
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FOR_ACTIVE_TERM_OUTPUTS(term)
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{
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grub_print_ucs4 (unicode_str, unicode_last_position, 0, 0, term);
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}
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grub_setcolorstate (GRUB_TERM_COLOR_NORMAL);
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grub_free (unicode_str);
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key = grub_getkey ();
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/* Remove the message. */
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grub_term_restore_pos (pos);
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FOR_ACTIVE_TERM_OUTPUTS(term)
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grub_print_spaces (term, 8);
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grub_term_restore_pos (pos);
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grub_free (pos);
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/* Scroll one lines or an entire page, depending on the key. */
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if (key == '\r' || key =='\n')
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grub_normal_reset_more ();
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else
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{
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static struct term_state *state;
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for (state = term_states; state; state = state->next)
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state->num_lines -= 2;
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}
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}
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void
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grub_set_more (int onoff)
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{
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if (onoff == 1)
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grub_more++;
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else
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grub_more--;
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grub_normal_reset_more ();
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}
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enum
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{
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GRUB_CP437_UPARROW = 0x18,
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GRUB_CP437_DOWNARROW = 0x19,
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GRUB_CP437_RIGHTARROW = 0x1a,
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GRUB_CP437_LEFTARROW = 0x1b,
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GRUB_CP437_VLINE = 0xb3,
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GRUB_CP437_CORNER_UR = 0xbf,
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GRUB_CP437_CORNER_LL = 0xc0,
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GRUB_CP437_HLINE = 0xc4,
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GRUB_CP437_CORNER_LR = 0xd9,
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GRUB_CP437_CORNER_UL = 0xda,
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};
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static grub_uint32_t
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map_code (grub_uint32_t in, struct grub_term_output *term)
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{
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if (in <= 0x7f)
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return in;
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switch (term->flags & GRUB_TERM_CODE_TYPE_MASK)
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{
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case GRUB_TERM_CODE_TYPE_CP437:
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switch (in)
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{
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case GRUB_UNICODE_LEFTARROW:
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return GRUB_CP437_LEFTARROW;
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case GRUB_UNICODE_UPARROW:
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return GRUB_CP437_UPARROW;
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case GRUB_UNICODE_RIGHTARROW:
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return GRUB_CP437_RIGHTARROW;
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case GRUB_UNICODE_DOWNARROW:
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return GRUB_CP437_DOWNARROW;
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case GRUB_UNICODE_HLINE:
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return GRUB_CP437_HLINE;
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case GRUB_UNICODE_VLINE:
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return GRUB_CP437_VLINE;
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case GRUB_UNICODE_CORNER_UL:
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return GRUB_CP437_CORNER_UL;
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case GRUB_UNICODE_CORNER_UR:
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return GRUB_CP437_CORNER_UR;
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case GRUB_UNICODE_CORNER_LL:
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return GRUB_CP437_CORNER_LL;
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case GRUB_UNICODE_CORNER_LR:
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return GRUB_CP437_CORNER_LR;
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}
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return '?';
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case GRUB_TERM_CODE_TYPE_ASCII:
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/* Better than nothing. */
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switch (in)
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{
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case GRUB_UNICODE_LEFTARROW:
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return '<';
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case GRUB_UNICODE_UPARROW:
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return '^';
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case GRUB_UNICODE_RIGHTARROW:
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return '>';
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case GRUB_UNICODE_DOWNARROW:
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return 'v';
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case GRUB_UNICODE_HLINE:
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return '-';
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case GRUB_UNICODE_VLINE:
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return '|';
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case GRUB_UNICODE_CORNER_UL:
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case GRUB_UNICODE_CORNER_UR:
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case GRUB_UNICODE_CORNER_LL:
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case GRUB_UNICODE_CORNER_LR:
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return '+';
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}
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return '?';
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}
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return in;
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}
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void
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grub_puts_terminal (const char *str, struct grub_term_output *term)
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{
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grub_uint32_t *unicode_str, *unicode_last_position;
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grub_error_push ();
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grub_utf8_to_ucs4_alloc (str, &unicode_str,
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&unicode_last_position);
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grub_error_pop ();
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if (!unicode_str)
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{
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for (; *str; str++)
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{
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struct grub_unicode_glyph c =
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{
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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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.base = *str
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};
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FOR_ACTIVE_TERM_OUTPUTS(term)
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{
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(term->putchar) (term, &c);
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}
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if (*str == '\n')
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{
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c.base = '\r';
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FOR_ACTIVE_TERM_OUTPUTS(term)
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{
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(term->putchar) (term, &c);
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}
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}
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}
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return;
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}
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grub_print_ucs4 (unicode_str, unicode_last_position, 0, 0, term);
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grub_free (unicode_str);
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}
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grub_uint16_t *
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grub_term_save_pos (void)
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{
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struct grub_term_output *cur;
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unsigned cnt = 0;
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grub_uint16_t *ret, *ptr;
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FOR_ACTIVE_TERM_OUTPUTS(cur)
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cnt++;
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ret = grub_malloc (cnt * sizeof (ret[0]));
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if (!ret)
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return NULL;
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ptr = ret;
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FOR_ACTIVE_TERM_OUTPUTS(cur)
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*ptr++ = grub_term_getxy (cur);
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return ret;
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}
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void
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grub_term_restore_pos (grub_uint16_t *pos)
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{
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struct grub_term_output *cur;
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grub_uint16_t *ptr = pos;
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if (!pos)
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return;
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FOR_ACTIVE_TERM_OUTPUTS(cur)
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{
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grub_term_gotoxy (cur, (*ptr & 0xff00) >> 8, *ptr & 0xff);
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ptr++;
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}
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}
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static void
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grub_terminal_autoload_free (void)
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{
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struct grub_term_autoload *cur, *next;
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unsigned i;
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for (i = 0; i < 2; i++)
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for (cur = i ? grub_term_input_autoload : grub_term_output_autoload;
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cur; cur = next)
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{
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next = cur->next;
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grub_free (cur->name);
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grub_free (cur->modname);
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grub_free (cur);
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}
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grub_term_input_autoload = NULL;
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grub_term_output_autoload = NULL;
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}
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/* Read the file terminal.lst for auto-loading. */
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void
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read_terminal_list (const char *prefix)
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{
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char *filename;
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grub_file_t file;
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char *buf = NULL;
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if (!prefix)
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{
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grub_errno = GRUB_ERR_NONE;
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return;
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}
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filename = grub_xasprintf ("%s/terminal.lst", prefix);
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if (!filename)
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{
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grub_errno = GRUB_ERR_NONE;
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return;
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}
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file = grub_file_open (filename);
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grub_free (filename);
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if (!file)
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{
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grub_errno = GRUB_ERR_NONE;
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return;
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}
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/* Override previous terminal.lst. */
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grub_terminal_autoload_free ();
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for (;; grub_free (buf))
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{
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char *p, *name;
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struct grub_term_autoload *cur;
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struct grub_term_autoload **target = NULL;
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buf = grub_file_getline (file);
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if (! buf)
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break;
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switch (buf[0])
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{
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case 'i':
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target = &grub_term_input_autoload;
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break;
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case 'o':
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target = &grub_term_output_autoload;
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break;
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}
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if (!target)
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continue;
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name = buf + 1;
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p = grub_strchr (name, ':');
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if (! p)
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continue;
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*p = '\0';
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while (*++p == ' ')
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;
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cur = grub_malloc (sizeof (*cur));
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if (!cur)
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{
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grub_errno = GRUB_ERR_NONE;
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continue;
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}
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cur->name = grub_strdup (name);
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if (! name)
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{
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grub_errno = GRUB_ERR_NONE;
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grub_free (cur);
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continue;
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}
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cur->modname = grub_strdup (p);
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if (! cur->modname)
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{
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grub_errno = GRUB_ERR_NONE;
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grub_free (cur->name);
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grub_free (cur);
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continue;
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}
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cur->next = *target;
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*target = cur;
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}
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grub_file_close (file);
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grub_errno = GRUB_ERR_NONE;
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}
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static void
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putglyph (const struct grub_unicode_glyph *c, struct grub_term_output *term)
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{
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struct grub_unicode_glyph c2 =
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{
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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 (c->base == '\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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c2.base = ' ';
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while (n--)
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(term->putchar) (term, &c2);
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return;
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}
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if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
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== GRUB_TERM_CODE_TYPE_UTF8_LOGICAL
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|| (term->flags & GRUB_TERM_CODE_TYPE_MASK)
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== GRUB_TERM_CODE_TYPE_UTF8_VISUAL)
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{
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int i;
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c2.estimated_width = grub_term_getcharwidth (term, c);
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for (i = -1; i < (int) c->ncomb; i++)
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{
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grub_uint8_t u8[20], *ptr;
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grub_uint32_t code;
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if (i == -1)
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{
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code = c->base;
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if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
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== GRUB_TERM_CODE_TYPE_UTF8_VISUAL)
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{
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if ((c->attributes & GRUB_UNICODE_GLYPH_ATTRIBUTE_MIRROR))
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code = grub_unicode_mirror_code (code);
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code = grub_unicode_shape_code (code, c->attributes);
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}
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}
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else
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code = c->combining[i].code;
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grub_ucs4_to_utf8 (&code, 1, u8, sizeof (u8));
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for (ptr = u8; *ptr; ptr++)
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{
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c2.base = *ptr;
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(term->putchar) (term, &c2);
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c2.estimated_width = 0;
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}
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}
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c2.estimated_width = 1;
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}
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else
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(term->putchar) (term, c);
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if (c->base == '\n')
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{
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c2.base = '\r';
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(term->putchar) (term, &c2);
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}
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}
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static void
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putcode_real (grub_uint32_t code, 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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.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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c.base = map_code (code, term);
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putglyph (&c, term);
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}
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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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/* Combining character by itself? */
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if (grub_unicode_get_comb_type (code) != GRUB_UNICODE_COMB_NONE)
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return;
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putcode_real (code, term);
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}
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static grub_ssize_t
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get_maxwidth (struct grub_term_output *term,
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int margin_left, int margin_right)
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{
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struct grub_unicode_glyph space_glyph = {
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.base = ' ',
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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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};
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return (grub_term_width (term)
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- grub_term_getcharwidth (term, &space_glyph)
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* (margin_left + margin_right) - 1);
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}
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static grub_ssize_t
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get_startwidth (struct grub_term_output *term,
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int margin_left)
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{
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return ((term->getxy (term) >> 8) & 0xff) - margin_left;
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}
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static int
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print_ucs4_terminal (const grub_uint32_t * str,
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const grub_uint32_t * last_position,
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int margin_left, int margin_right,
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struct grub_term_output *term,
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struct term_state *state)
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{
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const grub_uint32_t *ptr;
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grub_ssize_t startwidth = get_startwidth (term, margin_left);
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grub_ssize_t line_width = startwidth;
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grub_ssize_t lastspacewidth = 0;
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grub_ssize_t max_width = get_maxwidth (term, margin_left, margin_right);
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const grub_uint32_t *line_start = str, *last_space = str - 1;
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for (ptr = str; ptr < last_position; ptr++)
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{
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grub_ssize_t last_width = 0;
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if (grub_unicode_get_comb_type (*ptr) == GRUB_UNICODE_COMB_NONE)
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{
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struct grub_unicode_glyph c = {
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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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};
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c.base = *ptr;
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line_width += last_width = grub_term_getcharwidth (term, &c);
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}
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if (*ptr == ' ')
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{
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lastspacewidth = line_width;
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last_space = ptr;
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}
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if (line_width > max_width || *ptr == '\n')
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{
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const grub_uint32_t *ptr2;
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if (line_width > max_width && last_space > line_start)
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ptr = last_space;
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else if (line_width > max_width
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&& line_start == str && startwidth != 0)
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{
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ptr = str;
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lastspacewidth = startwidth;
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}
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else
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lastspacewidth = line_width - last_width;
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for (ptr2 = line_start; ptr2 < ptr; ptr2++)
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{
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/* Skip combining characters on non-UTF8 terminals. */
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if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
|
|
!= GRUB_TERM_CODE_TYPE_UTF8_LOGICAL
|
|
&& grub_unicode_get_comb_type (*ptr2)
|
|
!= GRUB_UNICODE_COMB_NONE)
|
|
continue;
|
|
putcode_real (*ptr2, term);
|
|
}
|
|
|
|
grub_print_spaces (term, margin_right);
|
|
grub_putcode ('\n', term);
|
|
if (state && ++state->num_lines
|
|
>= (grub_ssize_t) grub_term_height (term) - 2)
|
|
{
|
|
state->backlog_ucs4 = (ptr == last_space || *ptr == '\n')
|
|
? ptr + 1 : ptr;
|
|
state->backlog_len = last_position - state->backlog_ucs4;
|
|
return 1;
|
|
}
|
|
|
|
line_width -= lastspacewidth;
|
|
grub_print_spaces (term, margin_left);
|
|
if (ptr == last_space || *ptr == '\n')
|
|
ptr++;
|
|
line_start = ptr;
|
|
}
|
|
}
|
|
|
|
{
|
|
const grub_uint32_t *ptr2;
|
|
for (ptr2 = line_start; ptr2 < last_position; ptr2++)
|
|
{
|
|
/* Skip combining characters on non-UTF8 terminals. */
|
|
if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
|
|
!= GRUB_TERM_CODE_TYPE_UTF8_LOGICAL
|
|
&& grub_unicode_get_comb_type (*ptr2)
|
|
!= GRUB_UNICODE_COMB_NONE)
|
|
continue;
|
|
putcode_real (*ptr2, term);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct term_state *
|
|
find_term_state (struct grub_term_output *term)
|
|
{
|
|
struct term_state *state;
|
|
for (state = term_states; state; state = state->next)
|
|
if (grub_strcmp (state->term_name, term->name) == 0)
|
|
return state;
|
|
|
|
state = grub_zalloc (sizeof (*state));
|
|
if (!state)
|
|
{
|
|
grub_errno = GRUB_ERR_NONE;
|
|
return NULL;
|
|
}
|
|
|
|
state->term_name = grub_strdup (term->name);
|
|
state->next = term_states;
|
|
term_states = state;
|
|
|
|
return state;
|
|
}
|
|
|
|
static int
|
|
put_glyphs_terminal (const struct grub_unicode_glyph *visual,
|
|
grub_ssize_t visual_len,
|
|
int margin_left, int margin_right,
|
|
struct grub_term_output *term,
|
|
struct term_state *state)
|
|
{
|
|
const struct grub_unicode_glyph *visual_ptr;
|
|
for (visual_ptr = visual; visual_ptr < visual + visual_len; visual_ptr++)
|
|
{
|
|
if (visual_ptr->base == '\n')
|
|
grub_print_spaces (term, margin_right);
|
|
putglyph (visual_ptr, term);
|
|
if (visual_ptr->base == '\n')
|
|
{
|
|
if (state && ++state->num_lines
|
|
>= (grub_ssize_t) grub_term_height (term) - 2)
|
|
{
|
|
state->backlog_glyphs = visual_ptr + 1;
|
|
state->backlog_len = visual_len - (visual_ptr - visual) - 1;
|
|
return 1;
|
|
}
|
|
|
|
grub_print_spaces (term, margin_left);
|
|
}
|
|
grub_free (visual_ptr->combining);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
print_backlog (struct grub_term_output *term,
|
|
int margin_left, int margin_right)
|
|
{
|
|
struct term_state *state = find_term_state (term);
|
|
|
|
if (!state)
|
|
return 0;
|
|
|
|
if (state->backlog_ucs4)
|
|
{
|
|
int ret;
|
|
ret = print_ucs4_terminal (state->backlog_ucs4,
|
|
state->backlog_ucs4 + state->backlog_len,
|
|
margin_left, margin_right, term, state);
|
|
if (!ret)
|
|
{
|
|
grub_free (state->free);
|
|
state->free = NULL;
|
|
state->backlog_len = 0;
|
|
state->backlog_ucs4 = 0;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if (state->backlog_glyphs)
|
|
{
|
|
int ret;
|
|
ret = put_glyphs_terminal (state->backlog_glyphs,
|
|
state->backlog_len,
|
|
margin_left, margin_right, term, state);
|
|
if (!ret)
|
|
{
|
|
grub_free (state->free);
|
|
state->free = NULL;
|
|
state->backlog_len = 0;
|
|
state->backlog_glyphs = 0;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
print_ucs4_real (const grub_uint32_t * str,
|
|
const grub_uint32_t * last_position,
|
|
int margin_left, int margin_right,
|
|
struct grub_term_output *term, int backlog)
|
|
{
|
|
struct term_state *state = NULL;
|
|
|
|
if (backlog)
|
|
state = find_term_state (term);
|
|
|
|
if (((term->getxy (term) >> 8) & 0xff) < margin_left)
|
|
grub_print_spaces (term, margin_left - ((term->getxy (term) >> 8) & 0xff));
|
|
|
|
if ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
|
|
== GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS
|
|
|| (term->flags & GRUB_TERM_CODE_TYPE_MASK)
|
|
== GRUB_TERM_CODE_TYPE_UTF8_VISUAL)
|
|
{
|
|
grub_ssize_t visual_len;
|
|
struct grub_unicode_glyph *visual;
|
|
int ret;
|
|
|
|
auto grub_ssize_t getcharwidth (const struct grub_unicode_glyph *c);
|
|
grub_ssize_t getcharwidth (const struct grub_unicode_glyph *c)
|
|
{
|
|
return grub_term_getcharwidth (term, c);
|
|
}
|
|
|
|
visual_len = grub_bidi_logical_to_visual (str, last_position - str,
|
|
&visual, getcharwidth,
|
|
get_maxwidth (term,
|
|
margin_left,
|
|
margin_right),
|
|
get_startwidth (term,
|
|
margin_left));
|
|
if (visual_len < 0)
|
|
{
|
|
grub_print_error ();
|
|
return 0;
|
|
}
|
|
ret = put_glyphs_terminal (visual, visual_len, margin_left, margin_right,
|
|
term, state);
|
|
if (!ret)
|
|
grub_free (visual);
|
|
else
|
|
state->free = visual;
|
|
return ret;
|
|
}
|
|
return print_ucs4_terminal (str, last_position, margin_left, margin_right,
|
|
term, state);
|
|
}
|
|
|
|
void
|
|
grub_print_ucs4 (const grub_uint32_t * str,
|
|
const grub_uint32_t * last_position,
|
|
int margin_left, int margin_right,
|
|
struct grub_term_output *term)
|
|
{
|
|
print_ucs4_real (str, last_position, margin_left, margin_right,
|
|
term, 0);
|
|
}
|
|
|
|
|
|
void
|
|
grub_xputs_normal (const char *str)
|
|
{
|
|
grub_uint32_t *unicode_str = NULL, *unicode_last_position;
|
|
int backlog = 0;
|
|
grub_term_output_t term;
|
|
|
|
grub_error_push ();
|
|
grub_utf8_to_ucs4_alloc (str, &unicode_str,
|
|
&unicode_last_position);
|
|
grub_error_pop ();
|
|
|
|
if (!unicode_str)
|
|
{
|
|
for (; *str; str++)
|
|
{
|
|
struct grub_unicode_glyph c =
|
|
{
|
|
.variant = 0,
|
|
.attributes = 0,
|
|
.ncomb = 0,
|
|
.combining = 0,
|
|
.estimated_width = 1,
|
|
.base = *str
|
|
};
|
|
|
|
FOR_ACTIVE_TERM_OUTPUTS(term)
|
|
{
|
|
(term->putchar) (term, &c);
|
|
}
|
|
if (*str == '\n')
|
|
{
|
|
c.base = '\r';
|
|
FOR_ACTIVE_TERM_OUTPUTS(term)
|
|
{
|
|
(term->putchar) (term, &c);
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
FOR_ACTIVE_TERM_OUTPUTS(term)
|
|
{
|
|
int cur;
|
|
cur = print_ucs4_real (unicode_str, unicode_last_position, 0, 0,
|
|
term, grub_more);
|
|
if (cur)
|
|
backlog = 1;
|
|
}
|
|
while (backlog)
|
|
{
|
|
print_more ();
|
|
backlog = 0;
|
|
FOR_ACTIVE_TERM_OUTPUTS(term)
|
|
{
|
|
int cur;
|
|
cur = print_backlog (term, 0, 0);
|
|
if (cur)
|
|
backlog = 1;
|
|
}
|
|
}
|
|
grub_free (unicode_str);
|
|
}
|
|
|
|
void
|
|
grub_cls (void)
|
|
{
|
|
struct grub_term_output *term;
|
|
|
|
FOR_ACTIVE_TERM_OUTPUTS(term)
|
|
{
|
|
if ((term->flags & GRUB_TERM_DUMB) || (grub_env_get ("debug")))
|
|
{
|
|
grub_putcode ('\n', term);
|
|
grub_term_refresh (term);
|
|
}
|
|
else
|
|
(term->cls) (term);
|
|
}
|
|
}
|