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(base_name): If NAME is all slashes, return `/' (in

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conformance with the single unix spec).  Reported by Peter Moulder.
This commit is contained in:
Jim Meyering
1999-03-13 16:09:00 +00:00
parent 1905d5266b
commit 2bc2cc2f54
1 changed files with 17 additions and 5 deletions
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22
lib/basename.c
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@@ -1,5 +1,5 @@
/* basename.c -- return the last element in a path
Copyright (C) 1990, 1998 Free Software Foundation, Inc.
Copyright (C) 1990, 1998, 1999 Free Software Foundation, Inc.
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
@@ -29,16 +29,28 @@
/* 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.
If NAME is all slashes, be sure to return `/'.
FIXME: what if NAME is the empty string? */
char *
base_name (char const *name)
{
char const *base = name += FILESYSTEM_PREFIX_LEN (name);
int all_slashes = 1;
char const *p;
for (; *name; name++)
if (ISSLASH (*name))
base = name + 1;
for (p = name; *p; p++)
{
if (ISSLASH (*p))
base = p + 1;
else
all_slashes = 0;
}
/* If NAME is all slashes, arrange to return `/'. */
if (*base == '\0' && ISSLASH (*name) && all_slashes)
--base;
return (char *) base;
}