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/generate-includes.php | 192 +++++++++++++++++++++
 1 file changed, 192 insertions(+)
 create mode 100644 vendor/ezyang/htmlpurifier/maintenance/generate-includes.php

(limited to 'vendor/ezyang/htmlpurifier/maintenance/generate-includes.php')

diff --git a/vendor/ezyang/htmlpurifier/maintenance/generate-includes.php b/vendor/ezyang/htmlpurifier/maintenance/generate-includes.php
new file mode 100644
index 0000000..01e1c2a
--- /dev/null
+++ b/vendor/ezyang/htmlpurifier/maintenance/generate-includes.php
@@ -0,0 +1,192 @@
+#!/usr/bin/php
+<?php
+
+chdir(dirname(__FILE__));
+require_once 'common.php';
+require_once '../tests/path2class.func.php';
+require_once '../library/HTMLPurifier/Bootstrap.php';
+assertCli();
+
+/**
+ * @file
+ * Generates an include stub for users who do not want to use the autoloader.
+ * When new files are added to HTML Purifier's main codebase, this file should
+ * be called.
+ */
+
+chdir(dirname(__FILE__) . '/../library/');
+$FS = new FSTools();
+
+$exclude_dirs = array(
+    'HTMLPurifier/Language/',
+    'HTMLPurifier/ConfigSchema/',
+    'HTMLPurifier/Filter/',
+    'HTMLPurifier/Printer/',
+    /* These should be excluded, but need to have ConfigSchema support first
+
+    */
+);
+$exclude_files = array(
+    'HTMLPurifier/Lexer/PEARSax3.php',
+    'HTMLPurifier/Lexer/PH5P.php',
+    'HTMLPurifier/Printer.php',
+);
+
+// Determine what files need to be included:
+echo 'Scanning for files... ';
+$raw_files = $FS->globr('.', '*.php');
+if (!$raw_files) throw new Exception('Did not find any PHP source files');
+$files = array();
+foreach ($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
+    $ok = true;
+    foreach ($exclude_dirs as $dir) {
+        if (strncmp($dir, $file, strlen($dir)) === 0) {
+            $ok = false;
+            break;
+        }
+    }
+    if (!$ok) continue; // rm excluded directories
+    if (in_array($file, $exclude_files)) continue; // rm excluded files
+    $files[] = $file;
+}
+echo "done!\n";
+
+// Reorder list so that dependencies are included first:
+
+/**
+ * Returns a lookup array of dependencies for a file.
+ *
+ * @note This function expects that format $name extends $parent on one line
+ *
+ * @param string $file
+ *      File to check dependencies of.
+ * @return array
+ *      Lookup array of files the file is dependent on, sorted accordingly.
+ */
+function get_dependency_lookup($file)
+{
+    static $cache = array();
+    if (isset($cache[$file])) return $cache[$file];
+    if (!file_exists($file)) {
+        echo "File doesn't exist: $file\n";
+        return array();
+    }
+    $fh = fopen($file, 'r');
+    $deps = array();
+    while (!feof($fh)) {
+        $line = fgets($fh);
+        if (strncmp('class', $line, 5) === 0) {
+            // The implementation here is fragile and will break if we attempt
+            // to use interfaces. Beware!
+            $arr = explode(' extends ', trim($line, ' {'."\n\r"), 2);
+            if (count($arr) < 2) break;
+            $parent = $arr[1];
+            $dep_file = HTMLPurifier_Bootstrap::getPath($parent);
+            if (!$dep_file) break;
+            $deps[$dep_file] = true;
+            break;
+        }
+    }
+    fclose($fh);
+    foreach (array_keys($deps) as $file) {
+        // Extra dependencies must come *before* base dependencies
+        $deps = get_dependency_lookup($file) + $deps;
+    }
+    $cache[$file] = $deps;
+    return $deps;
+}
+
+/**
+ * Sorts files based on dependencies. This function is lazy and will not
+ * group files with dependencies together; it will merely ensure that a file
+ * is never included before its dependencies are.
+ *
+ * @param $files
+ *      Files array to sort.
+ * @return
+ *      Sorted array ($files is not modified by reference!)
+ */
+function dep_sort($files)
+{
+    $ret = array();
+    $cache = array();
+    foreach ($files as $file) {
+        if (isset($cache[$file])) continue;
+        $deps = get_dependency_lookup($file);
+        foreach (array_keys($deps) as $dep) {
+            if (!isset($cache[$dep])) {
+                $ret[] = $dep;
+                $cache[$dep] = true;
+            }
+        }
+        $cache[$file] = true;
+        $ret[] = $file;
+    }
+    return $ret;
+}
+
+$files = dep_sort($files);
+
+// Build the actual include stub:
+
+$version = trim(file_get_contents('../VERSION'));
+
+// stub
+$php = "<?php
+
+/**
+ * @file
+ * This file was auto-generated by generate-includes.php and includes all of
+ * the core files required by HTML Purifier. Use this if performance is a
+ * primary concern and you are using an opcode cache. PLEASE DO NOT EDIT THIS
+ * FILE, changes will be overwritten the next time the script is run.
+ *
+ * @version $version
+ *
+ * @warning
+ *      You must *not* include any other HTML Purifier files before this file,
+ *      because 'require' not 'require_once' is used.
+ *
+ * @warning
+ *      This file requires that the include path contains the HTML Purifier
+ *      library directory; this is not auto-set.
+ */
+
+";
+
+foreach ($files as $file) {
+    $php .= "require '$file';" . PHP_EOL;
+}
+
+echo "Writing HTMLPurifier.includes.php... ";
+file_put_contents('HTMLPurifier.includes.php', $php);
+echo "done!\n";
+
+$php = "<?php
+
+/**
+ * @file
+ * This file was auto-generated by generate-includes.php and includes all of
+ * the core files required by HTML Purifier. This is a convenience stub that
+ * includes all files using dirname(__FILE__) and require_once. PLEASE DO NOT
+ * EDIT THIS FILE, changes will be overwritten the next time the script is run.
+ *
+ * Changes to include_path are not necessary.
+ */
+
+\$__dir = dirname(__FILE__);
+
+";
+
+foreach ($files as $file) {
+    $php .= "require_once \$__dir . '/$file';" . PHP_EOL;
+}
+
+echo "Writing HTMLPurifier.safe-includes.php... ";
+file_put_contents('HTMLPurifier.safe-includes.php', $php);
+echo "done!\n";
+
+// vim: et sw=4 sts=4
-- 
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