Dpkg::Path - some common path handling functions
It provides some functions to handle various path.
This function will scan upwards the hierarchy of directory to find out the directory which contains the "DEBIAN" sub-directory and it will return its path. This directory is the root directory of a package being built.
If no DEBIAN subdirectory is found, it will return undef.
Returns the filename relative to get_pkg_root_dir($file).
This function tries to guess the root directory of the package build tree. It will first use get_pkg_root_dir(), but it will fallback to a more imprecise check: namely it will use the parent directory that is a sub-directory of the debian directory.
It can still return undef if a file outside of the debian sub-directory is provided.
This function verifies that both files are the same by checking that the device numbers and the inode numbers returned by stat()/lstat() are the same. If $resolve_symlink is true then stat() is used, otherwise lstat() is used.
This function returns a cleaned path. It simplifies double //, and remove /./ and /../ intelligently. For /../ it simplifies the path only if the previous element is not a symlink. Thus it should only be used on real filenames.
Return the filename of the file pointed by the symlink. The new name is canonicalized by canonpath().
Raphael Hertzog <hertzog@debian.org>.