parseCDATA($css); $definition = $config->getCSSDefinition(); $allow_duplicates = $config->get("CSS.AllowDuplicates"); // According to the CSS2.1 spec, the places where a // non-delimiting semicolon can appear are in strings // escape sequences. So here is some dumb hack to // handle quotes. $len = strlen($css); $accum = ""; $declarations = array(); $quoted = false; for ($i = 0; $i < $len; $i++) { $c = strcspn($css, ";'\"", $i); $accum .= substr($css, $i, $c); $i += $c; if ($i == $len) break; $d = $css[$i]; if ($quoted) { $accum .= $d; if ($d == $quoted) { $quoted = false; } } else { if ($d == ";") { $declarations[] = $accum; $accum = ""; } else { $accum .= $d; $quoted = $d; } } } if ($accum != "") $declarations[] = $accum; $propvalues = array(); $new_declarations = ''; /** * Name of the current CSS property being validated. */ $property = false; $context->register('CurrentCSSProperty', $property); foreach ($declarations as $declaration) { if (!$declaration) { continue; } if (!strpos($declaration, ':')) { continue; } list($property, $value) = explode(':', $declaration, 2); $property = trim($property); $value = trim($value); $ok = false; do { if (isset($definition->info[$property])) { $ok = true; break; } if (ctype_lower($property)) { break; } $property = strtolower($property); if (isset($definition->info[$property])) { $ok = true; break; } } while (0); if (!$ok) { continue; } // inefficient call, since the validator will do this again if (strtolower(trim($value)) !== 'inherit') { // inherit works for everything (but only on the base property) $result = $definition->info[$property]->validate( $value, $config, $context ); } else { $result = 'inherit'; } if ($result === false) { continue; } if ($allow_duplicates) { $new_declarations .= "$property:$result;"; } else { $propvalues[$property] = $result; } } $context->destroy('CurrentCSSProperty'); // procedure does not write the new CSS simultaneously, so it's // slightly inefficient, but it's the only way of getting rid of // duplicates. Perhaps config to optimize it, but not now. foreach ($propvalues as $prop => $value) { $new_declarations .= "$prop:$value;"; } return $new_declarations ? $new_declarations : false; } } // vim: et sw=4 sts=4