CleanSlashPath returns clean and slash path.

CopyFile copies a file from src to dst.

Dir returns all but the last element of path, typically the path's directory.

Exists returns whether the given file or directory exists.

HasSubdirPrefix returns whether the given path has the given prefix.

IsSamePath checks if two paths are same based on clean slash path.

Join joins any number of path elements into a clean and slash path.

RangeFilesByFormat traveses the given directory with the given format, and invoke the given callback for each file.

Rel returns relative clean slash path.

RewriteSubdir replaces path's subdir part with the given subdirs.