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@node Path Utilities
@section Path Utilities
An extended path library for Guile. This library builds upon the path
utilities provided by @xref{File System,,,guile}, but adds
manipulation procedures. These procedures should work no matter what
the systems directory delimiter is, even though this documentation
uses ``/'' for its examples.
Provided by the module @code{(hnh util path)}.
@defun path-absolute? string
Alias of @code{absolute-file-name?} from Guile.
@end defun
@defun path-append path paths ...
Joins all strings into a path, squeezing duplicated delimiters, but
ensuring that all delimiters that are needed are there.
Note that delimiters embedded inside the string, which aren't first or
last in a substring (or are the only thing in a string) are
kept. Meaning that
@example
(path-append "/" "hello") ⇒ "/hello"
(path-append "/usr/local/bin" "cmd") ⇒ "/usr/local/bin/cmd"
@end example
@end defun
@defun path-join lst
@lisp
(apply path-append lst)
@end lisp
@end defun
@defun path-split path
Splits path into a list of components.
The first component will be @code{""} if path is absolute.
@end defun
@defun filename-extension filename
Returns the extension of the filename, or the empty string if none exists.
@end defun
@defun realpath path
Equivalent of realpath(3). Absolute file names are returned as is,
while relative filenames gets expanded to absolute filenames.
@end defun
@defun relative-to base path
Returns @var{path} as a relative path relative to @var{base}.
base must be non-empty
@example
(relative-to "/some" "/some/path")
;; ⇒ "path"
(relative-to "/some" "/other/path/")
;; ⇒ "../path"
(relative-to "/a/b/c" "/a/b")
;; ⇒ "/a/b"
@end example
@end defun
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