cp-minecraft-assets.php

<?php

$assetsDir = "/c/Users/lewis/AppData/Roaming/.minecraft/assets/objects";
$targetDir = "/c/Users/lewis/minecraft-assets";

// minecraft index version json
// eg : /c/Users/lewis/AppData/Roaming/.minecraft/assets/indexes/1.8.json
$json = <<<EOF
EOF;

$json = json_decode($json);
$objects = (array) $json->objects;

foreach ($objects as $key => $value)
{
    $filename = str_replace("/", "-", $key);
    $objectName = $value->hash;
    $objectDir = substr($objectName, 0, 2);

    system("cp {$assetsDir}/{$objectDir}/{$objectName} {$targetDir}/{$filename}");
}