Generating a canonical path
- by Joel
Does any one know of any Java libraries I could use to generate canonical paths (basically remove back-references).
I need something that will do the following:
Raw Path - Canonical Path
/../foo/ -> /foo
/foo/ -> /foo
/../../../ -> /
/./foo/./ -> /foo
//foo//bar -> /foo/bar
//foo/../bar -> /bar
etc...
At the moment I lazily rely on using:
new File("/", path).getCanonicalPath();
But this resolves the path against the actual file system, and is synchronised.
java.lang.Thread.State: BLOCKED (on object monitor)
at java.io.ExpiringCache.get(ExpiringCache.java:55)
- waiting to lock <0x93a0d180> (a java.io.ExpiringCache)
at java.io.UnixFileSystem.canonicalize(UnixFileSystem.java:137)
at java.io.File.getCanonicalPath(File.java:559)
The paths that I am canonicalising do not exist on my file system, so just the logic of the method will do me fine, thus not requiring any synchronisation. I'm hoping for a well tested library rather than having to write my own.
