php shortpath PS1

shortpath

#!/usr/bin/env php
<?php

$safeHome = preg_quote(getenv('HOME'), '/');
$path = preg_replace("/^$safeHome(.*)$/", '~$1', getcwd());

$delim = "\xe2\x8b\xaf"; // ⋯
$maxlen=5;

$abbreviator = function($component) use ($delim, $maxlen) {
  if ( strlen($component) > $maxlen ) {
    return substr($component,0,$maxlen) . $delim;
  } else {
    return $component;
  }
};


$pathComponents = explode('/', $path);
$lastComponent = array_pop($pathComponents); // I don't want to abbreviate the last path component, even when it's long.
print implode ('/', array_merge(array_map( $abbreviator, $pathComponents), (array)$lastComponent));