// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Read a filename extension
// Not compiled or tested in-world
// Setup: Edit FILENAME and touch as owner.
// Stop / restore: Remove or disable the script. It does not change the build.
// Notes: Accepts a filename, not a complete URL or path. A leading dot alone is treated as a hidden filename, not an extension. An extension does not prove the file’s actual format.
// License: see LICENSE in this distribution.
// Original Incoprea example. MIT.
string FILENAME = "garden.preview.PNG";
default
{
    touch_start(integer count)
    {
        if (llDetectedKey(0) != llGetOwner()) return;
        integer dot = -1;
        integer i;
        for (i = 1; i < llStringLength(FILENAME); ++i)
        if (llGetSubString(FILENAME, i, i) == ".") dot = i;
        if (dot == -1 || dot == llStringLength(FILENAME) - 1)
        llOwnerSay("No extension found.");
        else llOwnerSay("Extension: " + llToLower(llGetSubString(FILENAME, dot + 1, -1)));
    }
    changed(integer flags)
    {
        if (flags & CHANGED_OWNER) llResetScript();
    }
}