diff options
Diffstat (limited to 'Build/source/texk/kpathsea/readlink.c')
-rw-r--r-- | Build/source/texk/kpathsea/readlink.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/Build/source/texk/kpathsea/readlink.c b/Build/source/texk/kpathsea/readlink.c new file mode 100644 index 00000000000..1a0fe72c26a --- /dev/null +++ b/Build/source/texk/kpathsea/readlink.c @@ -0,0 +1,77 @@ +/* readlink -- obtain contents of symlink. + + Copyright 2008, 2009 Karl Berry. + Copyright 1998, 1999, 2001, 2005 Olaf Weber. + + 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 of the License, 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 Lesser General Public License + along with this library; if not, see <http://www.gnu.org/licenses/>. */ + +#include <kpathsea/config.h> +#include <kpathsea/c-pathmx.h> +#include <kpathsea/c-unistd.h> +#include <kpathsea/c-stat.h> + +#ifdef WIN32 +#include <string.h> +#endif + +/* + * readlink name + * Returns 0 if name exists and is a symlink, 1 otherwise. The contents + * of the link are printed on standard output. + */ + +int +main (int argc, char **argv) +{ +#ifdef S_ISLNK + int status; + char path[PATH_MAX]; +#endif + + if (argc > 1 && strcmp (argv[1], "--help") == 0) { + printf("Usage: %s FILE\n\ + If FILE exists and is a symlink, print the contents of the link and\n\ + exit successfully. Otherwise print nothing and fail.\n\ +\n\ +--help display this help and exit\n\ +--version output version information and exit\n\n", argv[0]); + fputs ("Email bug reports to tex-k@tug.org.\n", stdout); + exit(0); + } else if (argc > 1 && strcmp (argv[1], "--version") == 0) { + printf ("%s (%s)\n\ +Copyright (C) 2009 Olaf Weber & Karl Berry.\n\ +There is NO warranty. You may redistribute this software\n\ +under the terms of the GNU General Public License\n\ +For more information about these matters, see the file named GPL.\n\ +Primary author of %s: Olaf Weber.\n", +argv[0], KPSEVERSION, argv[0]); + exit (0); + } + + /* insist on exactly one arg */ + if (argc != 2) { + fprintf(stderr, "%s: Need exactly one argument.\n\ +Try `%s --help' for more information.\n", argv[0], argv[0]); + exit(1); + } + +#ifdef S_ISLNK + status = readlink(argv[1], path, PATH_MAX); + if (status != -1) { + printf("%.*s\n", status, path); + return 0; + } +#endif + return 1; +} |