80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/* basename.c -- return the last element in a path
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Copyright (C) 1990, 1998, 1999, 2000, 2001, 2003 Free Software
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Foundation, Inc.
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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, or (at your option)
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any later version.
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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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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 Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "dirname.h"
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#include <string.h>
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/* In general, we can't use the builtin `basename' function if available,
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since it has different meanings in different environments.
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In some environments the builtin `basename' modifies its argument.
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Return the address of the last file name component of NAME. If
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NAME has no file name components because it is all slashes, return
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NAME if it is empty, the address of its last slash otherwise. */
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char *
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base_name (char const *name)
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{
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char const *base = name + FILESYSTEM_PREFIX_LEN (name);
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char const *p;
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for (p = base; *p; p++)
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{
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if (ISSLASH (*p))
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{
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/* Treat multiple adjacent slashes like a single slash. */
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do p++;
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while (ISSLASH (*p));
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/* If the file name ends in slash, use the trailing slash as
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the basename if no non-slashes have been found. */
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if (! *p)
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{
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if (ISSLASH (*base))
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base = p - 1;
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break;
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}
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/* *P is a non-slash preceded by a slash. */
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base = p;
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}
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}
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return (char *) base;
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}
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/* Return the length of of the basename NAME. Typically NAME is the
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value returned by base_name. Act like strlen (NAME), except omit
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redundant trailing slashes. */
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size_t
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base_len (char const *name)
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{
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size_t len;
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for (len = strlen (name); 1 < len && ISSLASH (name[len - 1]); len--)
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continue;
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return len;
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}
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