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Commit | Line | Data |
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db1771cf | 1 | /* cat.c - command to show the contents of a file */ |
2 | /* | |
4b13b216 | 3 | * GRUB -- GRand Unified Bootloader |
da9a6a94 | 4 | * Copyright (C) 2003,2005,2007,2008 Free Software Foundation, Inc. |
db1771cf | 5 | * |
5a79f472 | 6 | * GRUB is free software: you can redistribute it and/or modify |
db1771cf | 7 | * it under the terms of the GNU General Public License as published by |
5a79f472 | 8 | * the Free Software Foundation, either version 3 of the License, or |
db1771cf | 9 | * (at your option) any later version. |
10 | * | |
5a79f472 | 11 | * GRUB is distributed in the hope that it will be useful, |
db1771cf | 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
5a79f472 | 17 | * along with GRUB. If not, see <http://www.gnu.org/licenses/>. |
db1771cf | 18 | */ |
19 | ||
4b13b216 | 20 | #include <grub/dl.h> |
4b13b216 | 21 | #include <grub/file.h> |
22 | #include <grub/disk.h> | |
23 | #include <grub/term.h> | |
24 | #include <grub/misc.h> | |
d9864ee1 | 25 | #include <grub/gzio.h> |
b1b797cb | 26 | #include <grub/command.h> |
77a79592 | 27 | #include <grub/i18n.h> |
db1771cf | 28 | |
4b13b216 | 29 | static grub_err_t |
b1b797cb | 30 | grub_cmd_cat (grub_command_t cmd __attribute__ ((unused)), |
db1771cf | 31 | int argc, char **args) |
32 | ||
33 | { | |
4b13b216 | 34 | grub_file_t file; |
35 | char buf[GRUB_DISK_SECTOR_SIZE]; | |
36 | grub_ssize_t size; | |
b7c6bed5 | 37 | int key = 0; |
db1771cf | 38 | |
39 | if (argc != 1) | |
4b13b216 | 40 | return grub_error (GRUB_ERR_BAD_ARGUMENT, "file name required"); |
db1771cf | 41 | |
d9864ee1 | 42 | file = grub_gzfile_open (args[0], 1); |
db1771cf | 43 | if (! file) |
5382b1e4 | 44 | return grub_errno; |
b39f9d20 | 45 | |
b7c6bed5 | 46 | while ((size = grub_file_read (file, buf, sizeof (buf))) > 0 |
47 | && key != GRUB_TERM_ESC) | |
db1771cf | 48 | { |
49 | int i; | |
b39f9d20 | 50 | |
db1771cf | 51 | for (i = 0; i < size; i++) |
52 | { | |
53 | unsigned char c = buf[i]; | |
b39f9d20 | 54 | |
0d9ff7f0 | 55 | if ((grub_isprint (c) || grub_isspace (c)) && c != '\r') |
4b13b216 | 56 | grub_putchar (c); |
db1771cf | 57 | else |
58 | { | |
4b13b216 | 59 | grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT); |
60 | grub_printf ("<%x>", (int) c); | |
61 | grub_setcolorstate (GRUB_TERM_COLOR_STANDARD); | |
db1771cf | 62 | } |
63 | } | |
b7202015 | 64 | |
b7c6bed5 | 65 | while (grub_checkkey () >= 0 && |
66 | (key = GRUB_TERM_ASCII_CHAR (grub_getkey ())) != GRUB_TERM_ESC) | |
67 | ; | |
db1771cf | 68 | } |
69 | ||
4b13b216 | 70 | grub_putchar ('\n'); |
71 | grub_refresh (); | |
72 | grub_file_close (file); | |
b39f9d20 | 73 | |
db1771cf | 74 | return 0; |
75 | } | |
76 | ||
b1b797cb | 77 | static grub_command_t cmd; |
db1771cf | 78 | \f |
6d099807 | 79 | GRUB_MOD_INIT(cat) |
db1771cf | 80 | { |
b1b797cb | 81 | cmd = grub_register_command_p1 ("cat", grub_cmd_cat, |
77a79592 | 82 | N_("FILE"), N_("Show the contents of a file.")); |
db1771cf | 83 | } |
84 | ||
6d099807 | 85 | GRUB_MOD_FINI(cat) |
db1771cf | 86 | { |
b1b797cb | 87 | grub_unregister_command (cmd); |
db1771cf | 88 | } |