145 lines
3.5 KiB
C
145 lines
3.5 KiB
C
/* font_cmd.c - Font command definition. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2005,2006,2007,2008,2009 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/bufio.h>
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#include <grub/font.h>
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#include <grub/dl.h>
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#include <grub/misc.h>
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#include <grub/command.h>
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#include <grub/kernel.h>
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#include <grub/mm.h>
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static grub_err_t
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loadfont_command (grub_command_t cmd __attribute__ ((unused)),
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int argc,
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char **args)
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{
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if (argc == 0)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, "no font specified");
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while (argc--)
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{
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grub_file_t file = 0;
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file = grub_buffile_open (*args++, 1024);
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if (!file)
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return grub_errno;
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if (grub_font_load (file) != 0)
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return GRUB_ERR_BAD_FONT;
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}
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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lsfonts_command (grub_command_t cmd __attribute__ ((unused)),
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int argc __attribute__ ((unused)),
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char **args __attribute__ ((unused)))
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{
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struct grub_font_node *node;
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grub_printf ("Loaded fonts:\n");
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for (node = grub_font_list; node; node = node->next)
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{
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grub_font_t font = node->value;
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grub_printf ("%s\n", grub_font_get_name (font));
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}
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return GRUB_ERR_NONE;
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}
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static grub_ssize_t
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pseudo_file_read (struct grub_file *file, char *buf, grub_size_t len)
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{
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grub_memcpy (buf, (char *) file->data + file->offset, len);
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return len;
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}
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static grub_err_t
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pseudo_file_close (struct grub_file *file)
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{
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grub_free (file->data);
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file->data = 0;
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return GRUB_ERR_NONE;
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}
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/* Filesystem descriptor. */
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static struct grub_fs pseudo_fs =
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{
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.name = "Font Loader",
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.read = pseudo_file_read,
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.close = pseudo_file_close
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};
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static int
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load_font_module (struct grub_module_header *header)
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{
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grub_file_t file;
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if (header->type != OBJ_TYPE_FONT)
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return 0;
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file = grub_malloc (sizeof (*file));
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file->read_hook = 0;
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file->offset = 0;
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file->size = header->size - sizeof (struct grub_module_header);
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file->data = grub_malloc (header->size - sizeof (struct grub_module_header));
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if (!file->data)
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return 0;
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grub_memcpy (file->data, (char *) header + sizeof (struct grub_module_header),
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file->size);
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file->device = 0;
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file->fs = &pseudo_fs;
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grub_font_load (file);
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return 0;
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}
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static grub_command_t cmd_loadfont, cmd_lsfonts;
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GRUB_MOD_INIT(font_manager)
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{
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grub_font_loader_init ();
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grub_module_iterate (load_font_module);
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cmd_loadfont =
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grub_register_command ("loadfont", loadfont_command,
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"FILE...",
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"Specify one or more font files to load.");
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cmd_lsfonts =
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grub_register_command ("lsfonts", lsfonts_command,
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0, "List the loaded fonts.");
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}
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GRUB_MOD_FINI(font_manager)
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{
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/* TODO: Determine way to free allocated resources.
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Warning: possible pointer references could be in use. */
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grub_unregister_command (cmd_loadfont);
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grub_unregister_command (cmd_lsfonts);
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}
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