1 files changed, 145 insertions, 0 deletions
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..5ac793f
--- /dev/null
+++ b/index.php
@@ -0,0 +1,145 @@
+<?php
+
+// find_expr runs nutrimatic's find-expr, calling $match_fn for each match.
+// if $match_fn returns a non-false value, the search will stop
+function find_expr($index, $expr, $match_fn, $error_fn) {
+	$cmd = implode(' ', array_map('escapeshellarg', [
+		"./nutrimatic/bin/find-expr",
+		$index,
+		$expr,
+	]));
+	$cmd = "ulimit -t 30; exec $cmd";
+	$descriptorspec = [
+		0 => ['pipe', 'r'],
+		1 => ['pipe', 'w'],
+		2 => ['pipe', 'w'],
+	];
+	$proc = proc_open($cmd, $descriptorspec, $pipes);
+	list($stdin, $stdout, $stderr) = $pipes;
+	fclose($stdin);
+	// assumption: anything written to stderr will fit in the pipe buffer
+	// nutrimatic only appears to write-then-exit, so It's Probably Fine
+	while ($line = fscanf($stdout, "%s %[^\n]s\n")) {
+		list($score, $text) = $line;
+		if ($match_fn($score, $text)) {
+			break;
+		}
+	}
+	fclose($stdout);
+	proc_terminate($proc);
+	while ($err = fgets($stderr)) {
+		$error_fn($err);
+	}
+	fclose($stderr);
+	$retval = proc_close($proc);
+	return $retval;
+}
+
+function index_name($file) {
+	return preg_replace('/\.index$/', '', $file);
+}
+
+$index_files = glob("*.index");
+$default_index = "enwiki-latest.index";
+$selected_index = $default_index;
+foreach ($index_files as $file) {
+	if (index_name($file) == $_GET['idx']) {
+		$selected_index = $file;
+	}
+}
+$q = $_GET['q'] ?: "";
+$more = 1;
+$autofocus = ' autofocus';
+if ($_GET['more']) {
+	$more = (int)($_GET['more']);
+	$autofocus = '';
+}
+$max_more = 10;
+
+?>
+<html>
+<head>
+	<meta name="viewport" content="initial-scale=1.0">
+	<title><?php
+	if ($q) {
+		echo htmlspecialchars($q);
+		echo ' &raquo; ';
+	}
+	if ($selected_index != $default_index) {
+		echo htmlspecialchars(index_name($selected_index));
+		echo ' ';
+	}
+	echo "nut";
+	?></title>
+<style>
+
+</style>
+</head>
+<body>
+	<form>
+		<fieldset>
+			<legend><a href=".">nut</a></legend>
+			<select name="idx">
+				<?php
+				foreach ($index_files as $file) {
+					$name = index_name($file);
+					$attrs = '';
+					if ($file == $selected_index) {
+						$attrs .= ' selected';
+					}
+					?>
+					<option<?= $attrs ?> value="<?=htmlspecialchars($name)?>"><?=htmlspecialchars($name)?></option>
+					<?php
+				}
+				?>
+			</select>
+			<input type="text" name="q" value="<?=htmlspecialchars($q)?>" <?=$autofocus?>/>
+			<input type="submit" />
+		</fieldset>
+	</form>
+	<?php
+	if ($more > $max_more) {
+		echo "no";
+	} else if ($q) {
+		?>
+		<ol>
+			<?php
+			$depth = 0;
+			$anchor = '';
+			find_expr($selected_index, $q, function($score, $text) use (&$depth, &$anchor, $more) {
+				if ($score == '#') {
+					$depth++;
+					if ($depth == $more) {
+						$anchor .= ' id="more"';
+					}
+					return $depth > $more;
+				}
+				?>
+				<li class="match" value="<?=(int)(float)($score)?>"<?=$anchor?>><?=htmlspecialchars($text)?></li>
+				<?php
+				$anchor = '';
+			}, function($err) {
+				?>
+				<li class="error" value="0"><?=htmlspecialchars($err)?></li>
+				<?php
+			});
+			?>
+		</ol>
+		<?php
+		if ($depth > $more && $more != $max_more) {
+			?>
+			<a<?=$anchor?> class="more" href="?<?=http_build_query([
+				'idx' => index_name($selected_index),
+				'q' => $q,
+				'more' => $depth,
+			])?>#more">MORE</a>
+			<?php
+		}
+	} else {
+		?>
+		<p>Hi I'm a <a href="//nutrimatic.org/">Nutrimatic</a></p>
+		<?php
+	}
+	?>
+</body>
+</html>