admin
doz
html2pdf_v4.03
htmlpurifier-4.10.0
art
benchmarks
configdoc
docs
extras
library
HTMLPurifier
AttrDef
CSS
HTML
URI
CSS.php
Clone.php
Enum.php
Integer.php
Lang.php
Switch.php
Text.php
URI.php
AttrTransform
ChildDef
ConfigSchema
DefinitionCache
EntityLookup
Filter
HTMLModule
Injector
Language
Lexer
Node
Printer
Strategy
TagTransform
Token
URIFilter
URIScheme
VarParser
Arborize.php
AttrCollections.php
AttrDef.php
AttrTransform.php
AttrTypes.php
AttrValidator.php
Bootstrap.php
CSSDefinition.php
ChildDef.php
Config.php
ConfigSchema.php
ContentSets.php
Context.php
Definition.php
DefinitionCache.php
DefinitionCacheFactory.php
Doctype.php
DoctypeRegistry.php
ElementDef.php
Encoder.php
EntityLookup.php
EntityParser.php
ErrorCollector.php
ErrorStruct.php
Exception.php
Filter.php
Generator.php
HTMLDefinition.php
HTMLModule.php
HTMLModuleManager.php
IDAccumulator.php
Injector.php
Language.php
LanguageFactory.php
Length.php
Lexer.php
Node.php
PercentEncoder.php
Printer.php
PropertyList.php
PropertyListIterator.php
Queue.php
Strategy.php
StringHash.php
StringHashParser.php
TagTransform.php
Token.php
TokenFactory.php
URI.php
URIDefinition.php
URIFilter.php
URIParser.php
URIScheme.php
URISchemeRegistry.php
UnitConverter.php
VarParser.php
VarParserException.php
Zipper.php
HTMLPurifier.auto.php
HTMLPurifier.autoload-legacy.php
HTMLPurifier.autoload.php
HTMLPurifier.composer.php
HTMLPurifier.func.php
HTMLPurifier.includes.php
HTMLPurifier.kses.php
HTMLPurifier.path.php
HTMLPurifier.php
HTMLPurifier.safe-includes.php
maintenance
plugins
smoketests
tests
.gitattributes
.gitignore
.travis.yml
CREDITS
Doxyfile
INSTALL
INSTALL.fr.utf8
LICENSE
NEWS
README.md
TODO
VERSION
WHATSNEW
WYSIWYG
composer.json
phpdoc.ini
images
prints
prints3
stud
Kennwortwechsel.php
hauptframe.php
htmlpurifier-4.10.0.zip
index.php
index_alt.php
index_db.php
index_frame.htm
index_ldap.php
login.php
logout.php
menuframe.htm
styles_pc.css
testpdf.php
topframe.php
87 lines
2.5 KiB
PHP
Executable File
87 lines
2.5 KiB
PHP
Executable File
<?php
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/**
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* Validates the HTML attribute lang, effectively a language code.
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* @note Built according to RFC 3066, which obsoleted RFC 1766
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*/
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class HTMLPurifier_AttrDef_Lang extends HTMLPurifier_AttrDef
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{
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/**
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* @param string $string
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return bool|string
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*/
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public function validate($string, $config, $context)
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{
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$string = trim($string);
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if (!$string) {
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return false;
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}
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$subtags = explode('-', $string);
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$num_subtags = count($subtags);
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if ($num_subtags == 0) { // sanity check
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return false;
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}
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// process primary subtag : $subtags[0]
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$length = strlen($subtags[0]);
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switch ($length) {
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case 0:
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return false;
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case 1:
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if (!($subtags[0] == 'x' || $subtags[0] == 'i')) {
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return false;
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}
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break;
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case 2:
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case 3:
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if (!ctype_alpha($subtags[0])) {
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return false;
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} elseif (!ctype_lower($subtags[0])) {
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$subtags[0] = strtolower($subtags[0]);
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}
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break;
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default:
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return false;
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}
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$new_string = $subtags[0];
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if ($num_subtags == 1) {
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return $new_string;
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}
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// process second subtag : $subtags[1]
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$length = strlen($subtags[1]);
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if ($length == 0 || ($length == 1 && $subtags[1] != 'x') || $length > 8 || !ctype_alnum($subtags[1])) {
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return $new_string;
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}
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if (!ctype_lower($subtags[1])) {
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$subtags[1] = strtolower($subtags[1]);
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}
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$new_string .= '-' . $subtags[1];
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if ($num_subtags == 2) {
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return $new_string;
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}
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// process all other subtags, index 2 and up
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for ($i = 2; $i < $num_subtags; $i++) {
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$length = strlen($subtags[$i]);
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if ($length == 0 || $length > 8 || !ctype_alnum($subtags[$i])) {
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return $new_string;
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}
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if (!ctype_lower($subtags[$i])) {
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$subtags[$i] = strtolower($subtags[$i]);
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}
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$new_string .= '-' . $subtags[$i];
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}
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return $new_string;
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}
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}
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// vim: et sw=4 sts=4
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