--- /dev/null
+<?php
+
+class HTMLPurifier_ConfigSchema_InterchangeBuilder
+{
+
+ /**
+ * Used for processing DEFAULT, nothing else.
+ * @type HTMLPurifier_VarParser
+ */
+ protected $varParser;
+
+ /**
+ * @param HTMLPurifier_VarParser $varParser
+ */
+ public function __construct($varParser = null)
+ {
+ $this->varParser = $varParser ? $varParser : new HTMLPurifier_VarParser_Native();
+ }
+
+ /**
+ * @param string $dir
+ * @return HTMLPurifier_ConfigSchema_Interchange
+ */
+ public static function buildFromDirectory($dir = null)
+ {
+ $builder = new HTMLPurifier_ConfigSchema_InterchangeBuilder();
+ $interchange = new HTMLPurifier_ConfigSchema_Interchange();
+ return $builder->buildDir($interchange, $dir);
+ }
+
+ /**
+ * @param HTMLPurifier_ConfigSchema_Interchange $interchange
+ * @param string $dir
+ * @return HTMLPurifier_ConfigSchema_Interchange
+ */
+ public function buildDir($interchange, $dir = null)
+ {
+ if (!$dir) {
+ $dir = HTMLPURIFIER_PREFIX . '/HTMLPurifier/ConfigSchema/schema';
+ }
+ if (file_exists($dir . '/info.ini')) {
+ $info = parse_ini_file($dir . '/info.ini');
+ $interchange->name = $info['name'];
+ }
+
+ $files = array();
+ $dh = opendir($dir);
+ while (false !== ($file = readdir($dh))) {
+ if (!$file || $file[0] == '.' || strrchr($file, '.') !== '.txt') {
+ continue;
+ }
+ $files[] = $file;
+ }
+ closedir($dh);
+
+ sort($files);
+ foreach ($files as $file) {
+ $this->buildFile($interchange, $dir . '/' . $file);
+ }
+ return $interchange;
+ }
+
+ /**
+ * @param HTMLPurifier_ConfigSchema_Interchange $interchange
+ * @param string $file
+ */
+ public function buildFile($interchange, $file)
+ {
+ $parser = new HTMLPurifier_StringHashParser();
+ $this->build(
+ $interchange,
+ new HTMLPurifier_StringHash($parser->parseFile($file))
+ );
+ }
+
+ /**
+ * Builds an interchange object based on a hash.
+ * @param HTMLPurifier_ConfigSchema_Interchange $interchange HTMLPurifier_ConfigSchema_Interchange object to build
+ * @param HTMLPurifier_StringHash $hash source data
+ * @throws HTMLPurifier_ConfigSchema_Exception
+ */
+ public function build($interchange, $hash)
+ {
+ if (!$hash instanceof HTMLPurifier_StringHash) {
+ $hash = new HTMLPurifier_StringHash($hash);
+ }
+ if (!isset($hash['ID'])) {
+ throw new HTMLPurifier_ConfigSchema_Exception('Hash does not have any ID');
+ }
+ if (strpos($hash['ID'], '.') === false) {
+ if (count($hash) == 2 && isset($hash['DESCRIPTION'])) {
+ $hash->offsetGet('DESCRIPTION'); // prevent complaining
+ } else {
+ throw new HTMLPurifier_ConfigSchema_Exception('All directives must have a namespace');
+ }
+ } else {
+ $this->buildDirective($interchange, $hash);
+ }
+ $this->_findUnused($hash);
+ }
+
+ /**
+ * @param HTMLPurifier_ConfigSchema_Interchange $interchange
+ * @param HTMLPurifier_StringHash $hash
+ * @throws HTMLPurifier_ConfigSchema_Exception
+ */
+ public function buildDirective($interchange, $hash)
+ {
+ $directive = new HTMLPurifier_ConfigSchema_Interchange_Directive();
+
+ // These are required elements:
+ $directive->id = $this->id($hash->offsetGet('ID'));
+ $id = $directive->id->toString(); // convenience
+
+ if (isset($hash['TYPE'])) {
+ $type = explode('/', $hash->offsetGet('TYPE'));
+ if (isset($type[1])) {
+ $directive->typeAllowsNull = true;
+ }
+ $directive->type = $type[0];
+ } else {
+ throw new HTMLPurifier_ConfigSchema_Exception("TYPE in directive hash '$id' not defined");
+ }
+
+ if (isset($hash['DEFAULT'])) {
+ try {
+ $directive->default = $this->varParser->parse(
+ $hash->offsetGet('DEFAULT'),
+ $directive->type,
+ $directive->typeAllowsNull
+ );
+ } catch (HTMLPurifier_VarParserException $e) {
+ throw new HTMLPurifier_ConfigSchema_Exception($e->getMessage() . " in DEFAULT in directive hash '$id'");
+ }
+ }
+
+ if (isset($hash['DESCRIPTION'])) {
+ $directive->description = $hash->offsetGet('DESCRIPTION');
+ }
+
+ if (isset($hash['ALLOWED'])) {
+ $directive->allowed = $this->lookup($this->evalArray($hash->offsetGet('ALLOWED')));
+ }
+
+ if (isset($hash['VALUE-ALIASES'])) {
+ $directive->valueAliases = $this->evalArray($hash->offsetGet('VALUE-ALIASES'));
+ }
+
+ if (isset($hash['ALIASES'])) {
+ $raw_aliases = trim($hash->offsetGet('ALIASES'));
+ $aliases = preg_split('/\s*,\s*/', $raw_aliases);
+ foreach ($aliases as $alias) {
+ $directive->aliases[] = $this->id($alias);
+ }
+ }
+
+ if (isset($hash['VERSION'])) {
+ $directive->version = $hash->offsetGet('VERSION');
+ }
+
+ if (isset($hash['DEPRECATED-USE'])) {
+ $directive->deprecatedUse = $this->id($hash->offsetGet('DEPRECATED-USE'));
+ }
+
+ if (isset($hash['DEPRECATED-VERSION'])) {
+ $directive->deprecatedVersion = $hash->offsetGet('DEPRECATED-VERSION');
+ }
+
+ if (isset($hash['EXTERNAL'])) {
+ $directive->external = preg_split('/\s*,\s*/', trim($hash->offsetGet('EXTERNAL')));
+ }
+
+ $interchange->addDirective($directive);
+ }
+
+ /**
+ * Evaluates an array PHP code string without array() wrapper
+ * @param string $contents
+ */
+ protected function evalArray($contents)
+ {
+ return eval('return array(' . $contents . ');');
+ }
+
+ /**
+ * Converts an array list into a lookup array.
+ * @param array $array
+ * @return array
+ */
+ protected function lookup($array)
+ {
+ $ret = array();
+ foreach ($array as $val) {
+ $ret[$val] = true;
+ }
+ return $ret;
+ }
+
+ /**
+ * Convenience function that creates an HTMLPurifier_ConfigSchema_Interchange_Id
+ * object based on a string Id.
+ * @param string $id
+ * @return HTMLPurifier_ConfigSchema_Interchange_Id
+ */
+ protected function id($id)
+ {
+ return HTMLPurifier_ConfigSchema_Interchange_Id::make($id);
+ }
+
+ /**
+ * Triggers errors for any unused keys passed in the hash; such keys
+ * may indicate typos, missing values, etc.
+ * @param HTMLPurifier_StringHash $hash Hash to check.
+ */
+ protected function _findUnused($hash)
+ {
+ $accessed = $hash->getAccessed();
+ foreach ($hash as $k => $v) {
+ if (!isset($accessed[$k])) {
+ trigger_error("String hash key '$k' not used by builder", E_USER_NOTICE);
+ }
+ }
+ }
+}
+
+// vim: et sw=4 sts=4
projects / yaffs-website / blobdiff