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434
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1 /* stripslash.c -- remove redundant trailing slashes from a file name
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2
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3 Copyright (C) 1990, 2001, 2003-2006, 2009-2010 Free Software Foundation,
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4 Inc.
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5
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6 This program is free software: you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3 of the License, or
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9 (at your option) any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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18
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19 #include <config.h>
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20
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21 #include "dirname.h"
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22
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23 /* Remove trailing slashes from FILE. Return true if a trailing slash
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24 was removed. This is useful when using file name completion from a
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25 shell that adds a "/" after directory names (such as tcsh and
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26 bash), because on symlinks to directories, several system calls
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27 have different semantics according to whether a trailing slash is
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28 present. */
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29
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30 bool
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31 strip_trailing_slashes (char *file)
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32 {
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33 char *base = last_component (file);
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34 char *base_lim;
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35 bool had_slash;
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36
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37 /* last_component returns "" for file system roots, but we need to turn
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38 `///' into `/'. */
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39 if (! *base)
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40 base = file;
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41 base_lim = base + base_len (base);
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42 had_slash = (*base_lim != '\0');
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43 *base_lim = '\0';
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44 return had_slash;
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45 }
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