minecraft: Zan2Rei waypoints converter

points-zan2rei.awk

#!/usr/bin/awk -f

BEGIN {
	FS = ":";
	nether_mode = 0

	if (ARGC > 1) {
		for (i = 1; i < ARGC; i++) {
			arg = ARGV[i]
			if (arg !~ /^-/)
				break
			if (arg ~ /(-h|--help)/) {
				print "Usage: "ARGV[0]" [-n|--nether] POINTS_FILE" >"/dev/stderr"
				exit 0
			}
			if (arg ~ /(-n|--nether)/)
				nether_mode = 1
			delete ARGV[i]
		}
	}
}

{
	# output blank lines and comments as is
	if (/^([\s]*|#.*)$/) {
		print $0
		next
	}

	if (NF != 7) {
		print "invalid format: wrong number of fields" >"/dev/stderr"
		exit 1
	}

	x = $2
	z = $3
	# nether points have coords * 8, not 'n-2, n+3' as i thought before
	nether_input = ((x % 8) == 0) && ((z % 8) == 0)

	if (nether_mode)
	{
		if (!nether_input)
			next

		x = int(x / 8)
		z = int(z / 8)
	}

	r = int($5 * 255)
	g = int($6 * 255)
	b = int($7 * 255)
	rgb = sprintf("%02X%02X%02X", r, g, b)

	print $1":"x":"64":"z":"$4":"rgb
}

points-zan2rei.php

<?php
	$DEBUG = false;

	function print_form($script, $upname, $chkboxname)
	{
		echo(
"<form enctype='multipart/form-data' action='" . $script . "' method='POST'>
	Choose Zan's .points file:
	<input type='hidden' name='MAX_FILE_SIZE' value='1048576' />
	<input name='" . $upname . "' type='file' /><input name='" . $chkboxname . "' type='checkbox'>nether mode</input><br/>
	<input type='submit' value='Convert' />
</form>
<p>Note: save to <b>.minecraft/mods/rei_minimap/</b></p>
");
	}

	function process($file, $nether_mode)
	{
		global $DEBUG;

		$file['error'] && die($file['tmp_name']."error: upload failed!\n");

		$name = preg_replace("/\.points$/", "", $file['name']);
		$name .= ".DIM" . ($nether_mode ? "-1" : "0");
		$name .= ".points";

		$opts = "";
		$opts .= ($nether_mode ? "-n" : "");
		$out = system("./points-zan2rei.awk " . $opts . " " . escapeshellarg($file['tmp_name']) . " 2>&1", $retval);
		if ($retval != 0)
			return;

		if ($DEBUG)
			return;

		header("Content-Type: text/plain");
		header("Content-Disposition: attachment; filename=\"" . $name . "\"");
	}


	//
	// main
	//
	if (!$_SERVER['QUERY_STRING'])
	{
		print_form($_SERVER['PHP_SELF'] . "?process", "file0", "nether_mode");
		return;
	}

	if (!$_FILES) {
		header("Location: " . $_SERVER['PHP_SELF']);
		return;
	}

	if ($DEBUG) {
		echo("<pre>");
		print_r($_POST);
		print_r($_FILES);
		echo("</pre>\n");
	}

	$nether_mode = false;
	if (isset($_POST["nether_mode"]))
		$nether_mode = strcasecmp($_POST["nether_mode"], "on") == 0;
	process($_FILES["file0"], $nether_mode);
?>