83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/* cat.c - command to show the contents of a file */
|
||
/*
|
||
* GRUB -- GRand Unified Bootloader
|
||
* Copyright (C) 2003,2005,2007 Free Software Foundation, Inc.
|
||
*
|
||
* GRUB is free software: you can redistribute it and/or modify
|
||
* it under the terms of the GNU General Public License as published by
|
||
* the Free Software Foundation, either version 3 of the License, or
|
||
* (at your option) any later version.
|
||
*
|
||
* GRUB is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
* GNU General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU General Public License
|
||
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
#include <grub/normal.h>
|
||
#include <grub/dl.h>
|
||
#include <grub/arg.h>
|
||
#include <grub/file.h>
|
||
#include <grub/disk.h>
|
||
#include <grub/term.h>
|
||
#include <grub/misc.h>
|
||
#include <grub/gzio.h>
|
||
|
||
static grub_err_t
|
||
grub_cmd_cat (struct grub_arg_list *state __attribute__ ((unused)),
|
||
int argc, char **args)
|
||
|
||
{
|
||
grub_file_t file;
|
||
char buf[GRUB_DISK_SECTOR_SIZE];
|
||
grub_ssize_t size;
|
||
|
||
if (argc != 1)
|
||
return grub_error (GRUB_ERR_BAD_ARGUMENT, "file name required");
|
||
|
||
file = grub_gzfile_open (args[0], 1);
|
||
if (! file)
|
||
return 0;
|
||
|
||
while ((size = grub_file_read (file, buf, sizeof (buf))) > 0)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < size; i++)
|
||
{
|
||
unsigned char c = buf[i];
|
||
|
||
if (grub_isprint (c) || grub_isspace (c))
|
||
grub_putchar (c);
|
||
else
|
||
{
|
||
grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
|
||
grub_printf ("<%x>", (int) c);
|
||
grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
|
||
}
|
||
}
|
||
}
|
||
|
||
grub_putchar ('\n');
|
||
grub_refresh ();
|
||
grub_file_close (file);
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
GRUB_MOD_INIT(cat)
|
||
{
|
||
(void) mod; /* To stop warning. */
|
||
grub_register_command ("cat", grub_cmd_cat, GRUB_COMMAND_FLAG_BOTH,
|
||
"cat FILE", "Show the contents of a file.", 0);
|
||
}
|
||
|
||
GRUB_MOD_FINI(cat)
|
||
{
|
||
grub_unregister_command ("cat");
|
||
}
|