util.php
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PHP
743 行
<?PHP
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.0 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Stephan Schmidt <schst@php-tools.net> |
// +----------------------------------------------------------------------+
//
// $Id: Util.php,v 1.24 2004/12/23 13:21:59 schst Exp $
/**
* error code for invalid chars in XML name
*/
define("XML_UTIL_ERROR_INVALID_CHARS", 51);
/**
* error code for invalid chars in XML name
*/
define("XML_UTIL_ERROR_INVALID_START", 52);
/**
* error code for non-scalar tag content
*/
define("XML_UTIL_ERROR_NON_SCALAR_CONTENT", 60);
/**
* error code for missing tag name
*/
define("XML_UTIL_ERROR_NO_TAG_NAME", 61);
/**
* replace XML entities
*/
define("XML_UTIL_REPLACE_ENTITIES", 1);
/**
* embedd content in a CData Section
*/
define("XML_UTIL_CDATA_SECTION", 5);
/**
* do not replace entitites
*/
define("XML_UTIL_ENTITIES_NONE", 0);
/**
* replace all XML entitites
* This setting will replace <, >, ", ' and &
*/
define("XML_UTIL_ENTITIES_XML", 1);
/**
* replace only required XML entitites
* This setting will replace <, " and &
*/
define("XML_UTIL_ENTITIES_XML_REQUIRED", 2);
/**
* replace HTML entitites
* @link http://www.php.net/htmlentities
*/
define("XML_UTIL_ENTITIES_HTML", 3);
/**
* Collapse all empty tags.
*/
define("XML_UTIL_COLLAPSE_ALL", 1);
/**
* Collapse only empty XHTML tags that have no end tag.
*/
define("XML_UTIL_COLLAPSE_XHTML_ONLY", 2);
/**
* utility class for working with XML documents
*
* @category XML
* @package XML_Util
* @version 1.1.0
* @author Stephan Schmidt <schst@php.net>
*/
class XML_Util {
/**
* return API version
*
* @access public
* @static
* @return string $version API version
*/
function apiVersion()
{
return '1.1';
}
/**
* replace XML entities
*
* With the optional second parameter, you may select, which
* entities should be replaced.
*
* <code>
* require_once 'XML/Util.php';
*
* // replace XML entites:
* $string = XML_Util::replaceEntities("This string contains < & >.");
* </code>
*
* @access public
* @static
* @param string string where XML special chars should be replaced
* @param integer setting for entities in attribute values (one of XML_UTIL_ENTITIES_XML, XML_UTIL_ENTITIES_XML_REQUIRED, XML_UTIL_ENTITIES_HTML)
* @return string string with replaced chars
* @see reverseEntities()
*/
function replaceEntities($string, $replaceEntities = XML_UTIL_ENTITIES_XML)
{
switch ($replaceEntities) {
case XML_UTIL_ENTITIES_XML:
return strtr($string,array(
'&' => '&',
'>' => '>',
'<' => '<',
'"' => '"',
'\'' => ''' ));
break;
case XML_UTIL_ENTITIES_XML_REQUIRED:
return strtr($string,array(
'&' => '&',
'<' => '<',
'"' => '"' ));
break;
case XML_UTIL_ENTITIES_HTML:
return htmlentities($string);
break;
}
return $string;
}
/**
* reverse XML entities
*
* With the optional second parameter, you may select, which
* entities should be reversed.
*
* <code>
* require_once 'XML/Util.php';
*
* // reverse XML entites:
* $string = XML_Util::reverseEntities("This string contains < & >.");
* </code>
*
* @access public
* @static
* @param string string where XML special chars should be replaced
* @param integer setting for entities in attribute values (one of XML_UTIL_ENTITIES_XML, XML_UTIL_ENTITIES_XML_REQUIRED, XML_UTIL_ENTITIES_HTML)
* @return string string with replaced chars
* @see replaceEntities()
*/
function reverseEntities($string, $replaceEntities = XML_UTIL_ENTITIES_XML)
{
switch ($replaceEntities) {
case XML_UTIL_ENTITIES_XML:
return strtr($string,array(
'&' => '&',
'>' => '>',
'<' => '<',
'"' => '"',
''' => '\'' ));
break;
case XML_UTIL_ENTITIES_XML_REQUIRED:
return strtr($string,array(
'&' => '&',
'<' => '<',
'"' => '"' ));
break;
case XML_UTIL_ENTITIES_HTML:
$arr = array_flip(get_html_translation_table(HTML_ENTITIES));
return strtr($string, $arr);
break;
}
return $string;
}
/**
* build an xml declaration
*
* <code>
* require_once 'XML/Util.php';
*
* // get an XML declaration:
* $xmlDecl = XML_Util::getXMLDeclaration("1.0", "UTF-8", true);
* </code>
*
* @access public
* @static
* @param string $version xml version
* @param string $encoding character encoding
* @param boolean $standAlone document is standalone (or not)
* @return string $decl xml declaration
* @uses XML_Util::attributesToString() to serialize the attributes of the XML declaration
*/
function getXMLDeclaration($version = "1.0", $encoding = null, $standalone = null)
{
$attributes = array(
"version" => $version,
);
// add encoding
if ($encoding !== null) {
$attributes["encoding"] = $encoding;
}
// add standalone, if specified
if ($standalone !== null) {
$attributes["standalone"] = $standalone ? "yes" : "no";
}
return sprintf("<?xml%s?>", XML_Util::attributesToString($attributes, false));
}
/**
* build a document type declaration
*
* <code>
* require_once 'XML/Util.php';
*
* // get a doctype declaration:
* $xmlDecl = XML_Util::getDocTypeDeclaration("rootTag","myDocType.dtd");
* </code>
*
* @access public
* @static
* @param string $root name of the root tag
* @param string $uri uri of the doctype definition (or array with uri and public id)
* @param string $internalDtd internal dtd entries
* @return string $decl doctype declaration
* @since 0.2
*/
function getDocTypeDeclaration($root, $uri = null, $internalDtd = null)
{
if (is_array($uri)) {
$ref = sprintf( ' PUBLIC "%s" "%s"', $uri["id"], $uri["uri"] );
} elseif (!empty($uri)) {
$ref = sprintf( ' SYSTEM "%s"', $uri );
} else {
$ref = "";
}
if (empty($internalDtd)) {
return sprintf("<!DOCTYPE %s%s>", $root, $ref);
} else {
return sprintf("<!DOCTYPE %s%s [\n%s\n]>", $root, $ref, $internalDtd);
}
}
/**
* create string representation of an attribute list
*
* <code>
* require_once 'XML/Util.php';
*
* // build an attribute string
* $att = array(
* "foo" => "bar",
* "argh" => "tomato"
* );
*
* $attList = XML_Util::attributesToString($att);
* </code>
*
* @access public
* @static
* @param array $attributes attribute array
* @param boolean|array $sort sort attribute list alphabetically, may also be an assoc array containing the keys 'sort', 'multiline', 'indent', 'linebreak' and 'entities'
* @param boolean $multiline use linebreaks, if more than one attribute is given
* @param string $indent string used for indentation of multiline attributes
* @param string $linebreak string used for linebreaks of multiline attributes
* @param integer $entities setting for entities in attribute values (one of XML_UTIL_ENTITIES_NONE, XML_UTIL_ENTITIES_XML, XML_UTIL_ENTITIES_XML_REQUIRED, XML_UTIL_ENTITIES_HTML)
* @return string string representation of the attributes
* @uses XML_Util::replaceEntities() to replace XML entities in attribute values
* @todo allow sort also to be an options array
*/
function attributesToString($attributes, $sort = true, $multiline = false, $indent = ' ', $linebreak = "\n", $entities = XML_UTIL_ENTITIES_XML)
{
/**
* second parameter may be an array
*/
if (is_array($sort)) {
if (isset($sort['multiline'])) {
$multiline = $sort['multiline'];
}
if (isset($sort['indent'])) {
$indent = $sort['indent'];
}
if (isset($sort['linebreak'])) {
$multiline = $sort['linebreak'];
}
if (isset($sort['entities'])) {
$entities = $sort['entities'];
}
if (isset($sort['sort'])) {
$sort = $sort['sort'];
} else {
$sort = true;
}
}
$string = '';
if (is_array($attributes) && !empty($attributes)) {
if ($sort) {
ksort($attributes);
}
if( !$multiline || count($attributes) == 1) {
foreach ($attributes as $key => $value) {
if ($entities != XML_UTIL_ENTITIES_NONE) {
if ($entities === XML_UTIL_CDATA_SECTION) {
$entities = XML_UTIL_ENTITIES_XML;
}
$value = XML_Util::replaceEntities($value, $entities);
}
$string .= ' '.$key.'="'.$value.'"';
}
} else {
$first = true;
foreach ($attributes as $key => $value) {
if ($entities != XML_UTIL_ENTITIES_NONE) {
$value = XML_Util::replaceEntities($value, $entities);
}
if ($first) {
$string .= " ".$key.'="'.$value.'"';
$first = false;
} else {
$string .= $linebreak.$indent.$key.'="'.$value.'"';
}
}
}
}
return $string;
}
/**
* Collapses empty tags.
*
* @access public
* @static
* @param string $xml XML
* @param integer $mode Whether to collapse all empty tags (XML_UTIL_COLLAPSE_ALL) or only XHTML (XML_UTIL_COLLAPSE_XHTML_ONLY) ones.
* @return string $xml XML
*/
function collapseEmptyTags($xml, $mode = XML_UTIL_COLLAPSE_ALL) {
if ($mode == XML_UTIL_COLLAPSE_XHTML_ONLY) {
return preg_replace(
'/<(area|base|br|col|hr|img|input|link|meta|param)([^>]*)><\/\\1>/s',
'<\\1\\2 />',
$xml
);
} else {
return preg_replace(
'/<(\w+)([^>]*)><\/\\1>/s',
'<\\1\\2 />',
$xml
);
}
}
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