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Sync with fileutils.

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This commit is contained in:
Paul Eggert
2002-08-12 14:25:24 +00:00
parent d5629ce34a
commit eb9568566a
9 changed files with 187 additions and 230 deletions
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74
lib/basename.c
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@@ -19,53 +19,61 @@
# include <config.h>
#endif
#include <stdio.h>
#include <assert.h>
#ifndef FILESYSTEM_PREFIX_LEN
# define FILESYSTEM_PREFIX_LEN(Filename) 0
#if STDC_HEADERS || HAVE_STRING_H
# include <string.h>
#endif
#ifndef PARAMS
# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
# define PARAMS(Args) Args
# else
# define PARAMS(Args) ()
# endif
#endif
#ifndef ISSLASH
# define ISSLASH(C) ((C) == '/')
#endif
char *base_name PARAMS ((char const *name));
#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.
If NAME is all slashes, be sure to return `/'. */
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 (char const *name)
{
char const *base = name += FILESYSTEM_PREFIX_LEN (name);
int all_slashes = 1;
char const *base = name + FILESYSTEM_PREFIX_LEN (name);
char const *p;
for (p = name; *p; p++)
for (p = base; *p; p++)
{
if (ISSLASH (*p))
base = p + 1;
else
all_slashes = 0;
{
/* Treat multiple adjacent slashes like a single slash. */
do p++;
while (ISSLASH (*p));
/* 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;
}
}
/* If NAME is all slashes, arrange to return `/'. */
if (*base == '\0' && ISSLASH (*name) && all_slashes)
--base;
/* Make sure the last byte is not a slash. */
assert (all_slashes || !ISSLASH (*(p - 1)));
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;
}