grub/commands/cat.c
robertmh da9a6a9463 2008-05-29 Robert Millan <rmh@aybabtu.com>
* fs/affs.c: Update copyright year.
        * fs/ext2.c: Likewise.
        * fs/fshelp.c: Likewise.
        * fs/hfsplus.c: Likewise.
        * fs/ntfs.c: Likewise.
        * fs/xfs.c: Likewise.
        * include/grub/fshelp.h: Likewise.
        * util/grub-mkdevicemap.c: Likewise.
2008-05-29 13:01:43 +00:00

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/* cat.c - command to show the contents of a file */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003,2005,2007,2008 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;
int key = 0;
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
&& key != GRUB_TERM_ESC)
{
int i;
for (i = 0; i < size; i++)
{
unsigned char c = buf[i];
if ((grub_isprint (c) || grub_isspace (c)) && c != '\r')
grub_putchar (c);
else
{
grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
grub_printf ("<%x>", (int) c);
grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
}
}
while (grub_checkkey () >= 0 &&
(key = GRUB_TERM_ASCII_CHAR (grub_getkey ())) != GRUB_TERM_ESC)
;
}
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");
}