diff options
Diffstat (limited to 'basename.c')
| -rw-r--r-- | basename.c | 79 |
1 files changed, 63 insertions, 16 deletions
diff --git a/basename.c b/basename.c index 8d18a8fab3b5..54f037ed5fce 100644 --- a/basename.c +++ b/basename.c @@ -1,32 +1,79 @@ -/* basename.c -- return the last element in a path */ +/* basename.c -- return the last element in a path + Copyright (C) 1990, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. -#if HAVE_CONFIG_H -# include <config.h> -#endif + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. -#include <backupfile.h> + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#ifndef FILESYSTEM_PREFIX_LEN -#define FILESYSTEM_PREFIX_LEN(f) 0 +#if HAVE_CONFIG_H +# include <config.h> #endif -#ifndef ISSLASH -#define ISSLASH(c) ((c) == '/') +#if STDC_HEADERS || HAVE_STRING_H +# include <string.h> #endif +#include "dirname.h" /* In general, we can't use the builtin `basename' function if available, since it has different meanings in different environments. - In some environments the builtin `basename' modifies its argument. */ + In some environments the builtin `basename' modifies its argument. + + Return the address of the last file name component of NAME. If + NAME has no file name components because it is all slashes, return + NAME if it is empty, the address of its last slash otherwise. */ char * -base_name (name) - char const *name; +base_name (char const *name) { - char const *base = name += FILESYSTEM_PREFIX_LEN (name); + char const *base = name + FILESYSTEM_PREFIX_LEN (name); + char const *p; + + for (p = base; *p; p++) + { + if (ISSLASH (*p)) + { + /* Treat multiple adjacent slashes like a single slash. */ + do p++; + while (ISSLASH (*p)); - for (; *name; name++) - if (ISSLASH (*name)) - base = name + 1; + /* If the file name ends in slash, use the trailing slash as + the basename if no non-slashes have been found. */ + if (! *p) + { + if (ISSLASH (*base)) + base = p - 1; + break; + } + + /* *P is a non-slash preceded by a slash. */ + base = p; + } + } return (char *) base; } + +/* Return the length of of the basename NAME. Typically NAME is the + value returned by base_name. Act like strlen (NAME), except omit + redundant trailing slashes. */ + +size_t +base_len (char const *name) +{ + size_t len; + + for (len = strlen (name); 1 < len && ISSLASH (name[len - 1]); len--) + continue; + + return len; +} |