49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
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/* vi: set sw=4 ts=4: */
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/*
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* Mini dirname function.
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*
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* Copyright (C) 2001 Matt Kraai.
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*
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* This program 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 GNU
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* 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "libbb.h"
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/* Return a string on the heap containing the directory component of PATH. */
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char *dirname(const char *path)
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{
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const char *s;
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/* Go to the end of the string. */
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s = path + strlen(path) - 1;
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/* Strip off trailing /s (unless it is also the leading /). */
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while (path < s && s[0] == '/')
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s--;
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/* Strip the last component. */
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while (path <= s && s[0] != '/')
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s--;
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while (path < s && s[0] == '/')
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s--;
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if (s < path)
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return xstrdup (".");
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else
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return strdup_substr (path, 0, s - path + 1);
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}
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