diff options
author | obrien <obrien@FreeBSD.org> | 1997-03-29 22:40:46 +0000 |
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committer | obrien <obrien@FreeBSD.org> | 1997-03-29 22:40:46 +0000 |
commit | b3a30fbfec9a47562eda6d937b13d248785da297 (patch) | |
tree | 465c4207a9b3bcfa3a659c6a9f8833e478a4896f /contrib/cpio/dirname.c | |
download | FreeBSD-src-b3a30fbfec9a47562eda6d937b13d248785da297.zip FreeBSD-src-b3a30fbfec9a47562eda6d937b13d248785da297.tar.gz |
Virgin import of GNU cpio v2.4.2.
Diffstat (limited to 'contrib/cpio/dirname.c')
-rw-r--r-- | contrib/cpio/dirname.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/contrib/cpio/dirname.c b/contrib/cpio/dirname.c new file mode 100644 index 0000000..15d2596 --- /dev/null +++ b/contrib/cpio/dirname.c @@ -0,0 +1,70 @@ +/* dirname.c -- return all but the last element in a path + Copyright (C) 1990 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 + 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. + + 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#ifdef STDC_HEADERS +#include <stdlib.h> +#else +char *malloc (); +#endif +#if defined(STDC_HEADERS) || defined(HAVE_STRING_H) +#include <string.h> +#else +#include <strings.h> +#ifndef strrchr +#define strrchr rindex +#endif +#endif + +/* Return the leading directories part of PATH, + allocated with malloc. If out of memory, return 0. + Assumes that trailing slashes have already been + removed. */ + +char * +dirname (path) + char *path; +{ + char *newpath; + char *slash; + int length; /* Length of result, not including NUL. */ + + slash = strrchr (path, '/'); + if (slash == 0) + { + /* File is in the current directory. */ + path = "."; + length = 1; + } + else + { + /* Remove any trailing slashes from the result. */ + while (slash > path && *slash == '/') + --slash; + + length = slash - path + 1; + } + newpath = (char *) malloc (length + 1); + if (newpath == 0) + return 0; + strncpy (newpath, path, length); + newpath[length] = 0; + return newpath; +} |