98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
/* cat.c - command to show the contents of a file */
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/*
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 2003 Free Software Foundation, Inc.
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*
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* PUPA 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 PUPA; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <pupa/normal.h>
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#include <pupa/dl.h>
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#include <pupa/arg.h>
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#include <pupa/file.h>
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#include <pupa/disk.h>
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#include <pupa/term.h>
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#include <pupa/misc.h>
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static pupa_err_t
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pupa_cmd_cat (struct pupa_arg_list *state __attribute__ ((unused)),
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int argc, char **args)
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{
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pupa_file_t file;
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char buf[PUPA_DISK_SECTOR_SIZE];
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pupa_ssize_t size;
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if (argc != 1)
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return pupa_error (PUPA_ERR_BAD_ARGUMENT, "file name required");
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file = pupa_file_open (args[0]);
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if (! file)
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return 0;
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while ((size = pupa_file_read (file, buf, sizeof (buf))) > 0)
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{
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int i;
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for (i = 0; i < size; i++)
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{
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unsigned char c = buf[i];
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if (pupa_isprint (c) || pupa_isspace (c))
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pupa_putchar (c);
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else
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{
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pupa_setcolorstate (PUPA_TERM_COLOR_HIGHLIGHT);
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pupa_printf ("<%x>", (int) c);
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pupa_setcolorstate (PUPA_TERM_COLOR_STANDARD);
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}
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}
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}
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pupa_putchar ('\n');
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pupa_refresh ();
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pupa_file_close (file);
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return 0;
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}
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#ifdef PUPA_UTIL
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void
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pupa_cat_init (void)
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{
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pupa_register_command ("cat", pupa_cmd_cat, PUPA_COMMAND_FLAG_BOTH,
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"cat FILE", "Show the contents of a file", 0);
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}
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void
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pupa_cat_fini (void)
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{
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pupa_unregister_command ("cat");
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}
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#else /* ! PUPA_UTIL */
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PUPA_MOD_INIT
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{
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(void)mod; /* To stop warning. */
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pupa_register_command ("cat", pupa_cmd_cat, PUPA_COMMAND_FLAG_BOTH,
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"cat FILE", "Show the contents of a file", 0);
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}
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PUPA_MOD_FINI
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{
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pupa_unregister_command ("cat");
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}
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#endif /* ! PUPA_UTIL */
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