From 6854cb3f4d8219cf1829e32122eb2502a916eae9 Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Sat, 1 Feb 2020 09:05:48 +0100
Subject: initial checkin

---
 .../htmlpurifier/maintenance/config-scanner.php    | 155 +++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 vendor/ezyang/htmlpurifier/maintenance/config-scanner.php

(limited to 'vendor/ezyang/htmlpurifier/maintenance/config-scanner.php')

diff --git a/vendor/ezyang/htmlpurifier/maintenance/config-scanner.php b/vendor/ezyang/htmlpurifier/maintenance/config-scanner.php
new file mode 100644
index 0000000..c614d1f
--- /dev/null
+++ b/vendor/ezyang/htmlpurifier/maintenance/config-scanner.php
@@ -0,0 +1,155 @@
+#!/usr/bin/php
+<?php
+
+chdir(dirname(__FILE__));
+require_once 'common.php';
+require_once '../library/HTMLPurifier.auto.php';
+assertCli();
+
+if (version_compare(PHP_VERSION, '5.2.2', '<')) {
+    echo "This script requires PHP 5.2.2 or later, for tokenizer line numbers.";
+    exit(1);
+}
+
+/**
+ * @file
+ * Scans HTML Purifier source code for $config tokens and records the
+ * directive being used; configdoc can use this info later.
+ *
+ * Currently, this just dumps all the info onto the console. Eventually, it
+ * will create an XML file that our XSLT transform can use.
+ */
+
+$FS = new FSTools();
+chdir(dirname(__FILE__) . '/../library/');
+$raw_files = $FS->globr('.', '*.php');
+$files = array();
+foreach ($raw_files as $file) {
+    $file = substr($file, 2); // rm leading './'
+    if (strncmp('standalone/', $file, 11) === 0) continue; // rm generated files
+    if (substr_count($file, '.') > 1) continue; // rm meta files
+    $files[] = $file;
+}
+
+/**
+ * Moves the $i cursor to the next non-whitespace token
+ */
+function consumeWhitespace($tokens, &$i)
+{
+    do {$i++;} while (is_array($tokens[$i]) && $tokens[$i][0] === T_WHITESPACE);
+}
+
+/**
+ * Tests whether or not a token is a particular type. There are three run-cases:
+ *      - ($token, $expect_token): tests if the token is $expect_token type;
+ *      - ($token, $expect_value): tests if the token is the string $expect_value;
+ *      - ($token, $expect_token, $expect_value): tests if token is $expect_token type, and
+ *        its string representation is $expect_value
+ */
+function testToken($token, $value_or_token, $value = null)
+{
+    if (is_null($value)) {
+        if (is_int($value_or_token)) return is_array($token) && $token[0] === $value_or_token;
+        else return $token === $value_or_token;
+    } else {
+        return is_array($token) && $token[0] === $value_or_token && $token[1] === $value;
+    }
+}
+
+$counter = 0;
+$full_counter = 0;
+$tracker = array();
+
+foreach ($files as $file) {
+    $tokens = token_get_all(file_get_contents($file));
+    $file = str_replace('\\', '/', $file);
+    for ($i = 0, $c = count($tokens); $i < $c; $i++) {
+        $ok = false;
+        // Match $config
+        if (!$ok && testToken($tokens[$i], T_VARIABLE, '$config')) $ok = true;
+        // Match $this->config
+        while (!$ok && testToken($tokens[$i], T_VARIABLE, '$this')) {
+            consumeWhitespace($tokens, $i);
+            if (!testToken($tokens[$i], T_OBJECT_OPERATOR)) break;
+            consumeWhitespace($tokens, $i);
+            if (testToken($tokens[$i], T_STRING, 'config')) $ok = true;
+            break;
+        }
+        if (!$ok) continue;
+
+        $ok = false;
+        for($i++; $i < $c; $i++) {
+            if ($tokens[$i] === ',' || $tokens[$i] === ')' || $tokens[$i] === ';') {
+                break;
+            }
+            if (is_string($tokens[$i])) continue;
+            if ($tokens[$i][0] === T_OBJECT_OPERATOR) {
+                $ok = true;
+                break;
+            }
+        }
+        if (!$ok) continue;
+
+        $line = $tokens[$i][2];
+
+        consumeWhitespace($tokens, $i);
+        if (!testToken($tokens[$i], T_STRING, 'get')) continue;
+
+        consumeWhitespace($tokens, $i);
+        if (!testToken($tokens[$i], '(')) continue;
+
+        $full_counter++;
+
+        $matched = false;
+        do {
+
+            // What we currently don't match are batch retrievals, and
+            // wildcard retrievals. This data might be useful in the future,
+            // which is why we have a do {} while loop that doesn't actually
+            // do anything.
+
+            consumeWhitespace($tokens, $i);
+            if (!testToken($tokens[$i], T_CONSTANT_ENCAPSED_STRING)) continue;
+            $id = substr($tokens[$i][1], 1, -1);
+
+            $counter++;
+            $matched = true;
+
+            if (!isset($tracker[$id])) $tracker[$id] = array();
+            if (!isset($tracker[$id][$file])) $tracker[$id][$file] = array();
+            $tracker[$id][$file][] = $line;
+
+        } while (0);
+
+        //echo "$file:$line uses $namespace.$directive\n";
+    }
+}
+
+echo "\n$counter/$full_counter instances of \$config or \$this->config found in source code.\n";
+
+echo "Generating XML... ";
+
+$xw = new XMLWriter();
+$xw->openURI('../configdoc/usage.xml');
+$xw->setIndent(true);
+$xw->startDocument('1.0', 'UTF-8');
+$xw->startElement('usage');
+foreach ($tracker as $id => $files) {
+    $xw->startElement('directive');
+    $xw->writeAttribute('id', $id);
+    foreach ($files as $file => $lines) {
+        $xw->startElement('file');
+        $xw->writeAttribute('name', $file);
+        foreach ($lines as $line) {
+            $xw->writeElement('line', $line);
+        }
+        $xw->endElement();
+    }
+    $xw->endElement();
+}
+$xw->endElement();
+$xw->flush();
+
+echo "done!\n";
+
+// vim: et sw=4 sts=4
-- 
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