129 lines
2.8 KiB
C
129 lines
2.8 KiB
C
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/*
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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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/* The amount of lines counted by the pager. */
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static int grub_more_lines;
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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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process_newline (void)
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{
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if (code == '\n')
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{
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grub_putcode ('\r');
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grub_more_lines++;
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if (grub_more && grub_more_lines == height - 1)
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{
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char key;
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int pos = term->getxy ();
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/* Show --MORE-- on the lower left side of the screen. */
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term->gotoxy (1, height - 1);
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grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
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grub_printf ("--MORE--");
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grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
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key = grub_getkey ();
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/* Remove the message. */
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term->gotoxy (1, height - 1);
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grub_printf (" ");
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term->gotoxy (pos >> 8, pos & 0xFF);
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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_more_lines--;
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else
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grub_more_lines = 0;
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}
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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_more_lines = 0;
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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 code;
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grub_ssize_t ret;
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const char *ptr = str;
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unsigned i;
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while (*ptr)
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{
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ret = grub_utf8_to_ucs4 (&code, 1, ptr,
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grub_strlen (ptr), &ptr);
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if (ret < 0)
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{
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grub_putcode ('?', term);
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ptr++;
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continue;
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}
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else
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grub_putcode (code, term);
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}
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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 (cur = grub_term_outputs; cur; cur = cur->next)
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if (cur->flags & GRUB_TERM_ACTIVE)
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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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for (cur = grub_term_outputs; cur; cur = cur->next)
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if (cur->flags & GRUB_TERM_ACTIVE)
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*ptr++ = cur->getxy ();
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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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if (!pos)
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return;
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for (cur = grub_term_outputs; cur; cur = cur->next)
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if (cur->flags & GRUB_TERM_ACTIVE)
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cur->gotoxy ((*ptr & 0xff00) >> 8, *ptr & 0xff);
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}
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