common-urlpath-prefix

Computes the longest common base path prefix.

Usage

API:

var cup = require('common-urlpath-prefix'),
  paths = process.argv.slice(2),
  opts = { sep: '/' };

console.dir(cup(paths, opts));
console.dir(cup(paths));
console.dir(cup(paths, '/'));

For details see doc/demo/usage.js.

CLI:

$ common-urlpath-prefix $(find /usr/share/apache2/ -name '*.png')
/usr/share/apache2/icons/
$ CUP_SEP=. common-urlpath-prefix /etc/apparmor.d/*d
/etc/apparmor.d/usr.sbin.
$ CUP_SEP=. common-urlpath-prefix $(git config --list | grep rig)
remote.origin.

You can use .cfg(defaultOpts) to get a wrapper for cup() with custom default options:

var cupBksl = require('common-urlpath-prefix').cfg({ sep: "\\" });
console.dir(cupBksl(["C:\\Users\\Alice", "C:\\Users\\Bob"]));

Comparison to other modules

Major differences from lcp and common-prefix:

• CUP splits at directory seperators only.

Major differences from common-path-prefix:

• CUP doesn't sort. Each original path is checked only once, and the number of splits is limited by the current longest prefix, so complexity should be O(n).
• CUP accepts URLs.
• CUP will return the full original path if only one path/URL is given or all given paths are equal.

License

ISC