1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * wfopen_input implementation for busybox
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4 | *
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5 | * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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6 | *
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7 | * This program is free software; you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation; either version 2 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * This program is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 | * General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with this program; if not, write to the Free Software
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19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 | *
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21 | */
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22 |
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23 | /* A number of applets need to open a file for reading, where the filename
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24 | * is a command line arg. Since often that arg is '-' (meaning stdin),
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25 | * we avoid testing everywhere by consolidating things in this routine.
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26 | *
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27 | * Note: We also consider "" to main stdin (for 'cmp' at least).
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28 | */
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29 |
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30 | #include <stdio.h>
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31 | #include <sys/stat.h>
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32 | #include <libbb.h>
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33 |
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34 | FILE *bb_wfopen_input(const char *filename)
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35 | {
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36 | FILE *fp = stdin;
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37 |
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38 | if ((filename != bb_msg_standard_input)
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39 | && filename[0] && ((filename[0] != '-') || filename[1])
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40 | ) {
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41 | fp = bb_wfopen(filename, "r");
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42 | }
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43 |
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44 | return fp;
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45 | }
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