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* All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * @category XML * @package XML_Util * @author Stephan Schmidt * @copyright 2003-2008 Stephan Schmidt * @license http://opensource.org/licenses/bsd-license New BSD License * @version CVS: $Id$ * @link http://pear.php.net/package/XML_Util */ /** * 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); /** * Do not collapse any empty tags. */ define('XML_UTIL_COLLAPSE_NONE', 0); /** * 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 * @author Stephan Schmidt * @copyright 2003-2008 Stephan Schmidt * @license http://opensource.org/licenses/bsd-license New BSD License * @version Release: 1.4.5 * @link http://pear.php.net/package/XML_Util */ class XML_Util { /** * Return API version * * @return string $version API version */ public static function apiVersion() { return '1.4'; } /** * Replace XML entities * * With the optional second parameter, you may select, which * entities should be replaced. * * * require_once 'XML/Util.php'; * * // replace XML entites: * $string = XML_Util::replaceEntities('This string contains < & >.'); * * * With the optional third parameter, you may pass the character encoding * * require_once 'XML/Util.php'; * * // replace XML entites in UTF-8: * $string = XML_Util::replaceEntities( * 'This string contains < & > as well as ä, ö, ß, à and ê', * XML_UTIL_ENTITIES_HTML, * 'UTF-8' * ); * * * @param string $string string where XML special chars * should be replaced * @param int $replaceEntities setting for entities in attribute values * (one of XML_UTIL_ENTITIES_XML, * XML_UTIL_ENTITIES_XML_REQUIRED, * XML_UTIL_ENTITIES_HTML) * @param string $encoding encoding value (if any)... * must be a valid encoding as determined * by the htmlentities() function * * @return string string with replaced chars * @see reverseEntities() */ public static function replaceEntities( $string, $replaceEntities = XML_UTIL_ENTITIES_XML, $encoding = 'ISO-8859-1' ) { switch ($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, ENT_COMPAT, $encoding); break; } return $string; } /** * Reverse XML entities * * With the optional second parameter, you may select, which * entities should be reversed. * * * require_once 'XML/Util.php'; * * // reverse XML entites: * $string = XML_Util::reverseEntities('This string contains < & >.'); * * * With the optional third parameter, you may pass the character encoding * * require_once 'XML/Util.php'; * * // reverse XML entites in UTF-8: * $string = XML_Util::reverseEntities( * 'This string contains < & > as well as' * . ' ä, ö, ß, à and ê', * XML_UTIL_ENTITIES_HTML, * 'UTF-8' * ); * * * @param string $string string where XML special chars * should be replaced * @param int $replaceEntities setting for entities in attribute values * (one of XML_UTIL_ENTITIES_XML, * XML_UTIL_ENTITIES_XML_REQUIRED, * XML_UTIL_ENTITIES_HTML) * @param string $encoding encoding value (if any)... * must be a valid encoding as determined * by the html_entity_decode() function * * @return string string with replaced chars * @see replaceEntities() */ public static function reverseEntities( $string, $replaceEntities = XML_UTIL_ENTITIES_XML, $encoding = 'ISO-8859-1' ) { switch ($replaceEntities) { case XML_UTIL_ENTITIES_XML: return strtr( $string, array( '&' => '&', '>' => '>', '<' => '<', '"' => '"', ''' => '\'' ) ); break; case XML_UTIL_ENTITIES_XML_REQUIRED: return strtr( $string, array( '&' => '&', '<' => '<', '"' => '"' ) ); break; case XML_UTIL_ENTITIES_HTML: return html_entity_decode($string, ENT_COMPAT, $encoding); break; } return $string; } /** * Build an xml declaration * * * require_once 'XML/Util.php'; * * // get an XML declaration: * $xmlDecl = XML_Util::getXMLDeclaration('1.0', 'UTF-8', true); * * * @param string $version xml version * @param string $encoding character encoding * @param bool $standalone document is standalone (or not) * * @return string xml declaration * @uses attributesToString() to serialize the attributes of the * XML declaration */ public static 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'] = $standalone ? 'yes' : 'no'; } return sprintf( '', XML_Util::attributesToString($attributes, false) ); } /** * Build a document type declaration * * * require_once 'XML/Util.php'; * * // get a doctype declaration: * $xmlDecl = XML_Util::getDocTypeDeclaration('rootTag','myDocType.dtd'); * * * @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 doctype declaration * @since 0.2 */ public static 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('', $root, $ref); } else { return sprintf("", $root, $ref, $internalDtd); } } /** * Create string representation of an attribute list * * * require_once 'XML/Util.php'; * * // build an attribute string * $att = array( * 'foo' => 'bar', * 'argh' => 'tomato' * ); * * $attList = XML_Util::attributesToString($att); * * * @param array $attributes attribute array * @param bool|array $sort sort attribute list alphabetically, * may also be an assoc array containing * the keys 'sort', 'multiline', 'indent', * 'linebreak' and 'entities' * @param bool $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 int $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 replaceEntities() to replace XML entities in attribute values * @todo allow sort also to be an options array */ public static 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. * * @param string $xml XML * @param int $mode Whether to collapse all empty tags (XML_UTIL_COLLAPSE_ALL) * or only XHTML (XML_UTIL_COLLAPSE_XHTML_ONLY) ones. * * @return string XML */ public static function collapseEmptyTags($xml, $mode = XML_UTIL_COLLAPSE_ALL) { if (preg_match('~<([^>])+/>~s', $xml, $matches)) { // it's already an empty tag return $xml; } switch ($mode) { case XML_UTIL_COLLAPSE_ALL: $preg1 = '~<' . '(?:' . '(https?://[^:\s]+:\w+)' . // ]*)' . // attributes ($4) '>' . '<\/(\1|\2|\3)>' . // 1, 2, or 3 again ($5) '~s' ; $preg2 = '<' . '${1}${2}${3}' . // tag (only one should have been populated) '${4}' . // attributes ' />' ; return (preg_replace($preg1, $preg2, $xml)?:$xml); break; case XML_UTIL_COLLAPSE_XHTML_ONLY: return ( preg_replace( '/<(area|base(?:font)?|br|col|frame|hr|img|input|isindex|link|meta|' . 'param)([^>]*)><\/\\1>/s', '<\\1\\2 />', $xml ) ?: $xml ); break; case XML_UTIL_COLLAPSE_NONE: // fall thru default: return $xml; } } /** * Create a tag * * This method will call XML_Util::createTagFromArray(), which * is more flexible. * * * require_once 'XML/Util.php'; * * // create an XML tag: * $tag = XML_Util::createTag('myNs:myTag', * array('foo' => 'bar'), * 'This is inside the tag', * 'http://www.w3c.org/myNs#'); * * * @param string $qname qualified tagname (including namespace) * @param array $attributes array containg attributes * @param mixed $content the content * @param string $namespaceUri URI of the namespace * @param int $replaceEntities whether to replace XML special chars in * content, embedd it in a CData section * or none of both * @param bool $multiline whether to create a multiline tag where * each attribute gets written to a single line * @param string $indent string used to indent attributes * (_auto indents attributes so they start * at the same column) * @param string $linebreak string used for linebreaks * @param bool $sortAttributes Whether to sort the attributes or not * @param int $collapseTagMode How to handle a content-less, and thus collapseable, tag * * @return string XML tag * @see createTagFromArray() * @uses createTagFromArray() to create the tag */ public static function createTag( $qname, $attributes = array(), $content = null, $namespaceUri = null, $replaceEntities = XML_UTIL_REPLACE_ENTITIES, $multiline = false, $indent = '_auto', $linebreak = "\n", $sortAttributes = true, $collapseTagMode = XML_UTIL_COLLAPSE_ALL ) { $tag = array( 'qname' => $qname, 'attributes' => $attributes ); // add tag content if ($content !== null) { $tag['content'] = $content; } // add namespace Uri if ($namespaceUri !== null) { $tag['namespaceUri'] = $namespaceUri; } return XML_Util::createTagFromArray( $tag, $replaceEntities, $multiline, $indent, $linebreak, $sortAttributes, $collapseTagMode ); } /** * Create a tag from an array. * This method awaits an array in the following format * 
     * array(
     *     // qualified name of the tag
     *     'qname' => $qname
     *
     *     // namespace prefix (optional, if qname is specified or no namespace)
     *     'namespace' => $namespace
     *
     *     // local part of the tagname (optional, if qname is specified)
     *     'localpart' => $localpart,
     *
     *     // array containing all attributes (optional)
     *     'attributes' => array(),
     *
     *     // tag content (optional)
     *     'content' => $content,
     *
     *     // namespaceUri for the given namespace (optional)
     *     'namespaceUri' => $namespaceUri
     * )
     *
* * * require_once 'XML/Util.php'; * * $tag = array( * 'qname' => 'foo:bar', * 'namespaceUri' => 'http://foo.com', * 'attributes' => array('key' => 'value', 'argh' => 'fruit&vegetable'), * 'content' => 'I\'m inside the tag', * ); * // creating a tag with qualified name and namespaceUri * $string = XML_Util::createTagFromArray($tag); * * * @param array $tag tag definition * @param int $replaceEntities whether to replace XML special chars in * content, embedd it in a CData section * or none of both * @param bool $multiline whether to create a multiline tag where each * attribute gets written to a single line * @param string $indent string used to indent attributes * (_auto indents attributes so they start * at the same column) * @param string $linebreak string used for linebreaks * @param bool $sortAttributes Whether to sort the attributes or not * @param int $collapseTagMode How to handle a content-less, and thus collapseable, tag * * @return string XML tag * * @see createTag() * @uses attributesToString() to serialize the attributes of the tag * @uses splitQualifiedName() to get local part and namespace of a qualified name * @uses createCDataSection() * @uses collapseEmptyTags() * @uses raiseError() */ public static function createTagFromArray( $tag, $replaceEntities = XML_UTIL_REPLACE_ENTITIES, $multiline = false, $indent = '_auto', $linebreak = "\n", $sortAttributes = true, $collapseTagMode = XML_UTIL_COLLAPSE_ALL ) { if (isset($tag['content']) && !is_scalar($tag['content'])) { return XML_Util::raiseError( 'Supplied non-scalar value as tag content', XML_UTIL_ERROR_NON_SCALAR_CONTENT ); } if (!isset($tag['qname']) && !isset($tag['localPart'])) { return XML_Util::raiseError( 'You must either supply a qualified name ' . '(qname) or local tag name (localPart).', XML_UTIL_ERROR_NO_TAG_NAME ); } // if no attributes hav been set, use empty attributes if (!isset($tag['attributes']) || !is_array($tag['attributes'])) { $tag['attributes'] = array(); } if (isset($tag['namespaces'])) { foreach ($tag['namespaces'] as $ns => $uri) { $tag['attributes']['xmlns:' . $ns] = $uri; } } if (!isset($tag['qname'])) { // qualified name is not given // check for namespace if (isset($tag['namespace']) && !empty($tag['namespace'])) { $tag['qname'] = $tag['namespace'] . ':' . $tag['localPart']; } else { $tag['qname'] = $tag['localPart']; } } elseif (isset($tag['namespaceUri']) && !isset($tag['namespace'])) { // namespace URI is set, but no namespace $parts = XML_Util::splitQualifiedName($tag['qname']); $tag['localPart'] = $parts['localPart']; if (isset($parts['namespace'])) { $tag['namespace'] = $parts['namespace']; } } if (isset($tag['namespaceUri']) && !empty($tag['namespaceUri'])) { // is a namespace given if (isset($tag['namespace']) && !empty($tag['namespace'])) { $tag['attributes']['xmlns:' . $tag['namespace']] = $tag['namespaceUri']; } else { // define this Uri as the default namespace $tag['attributes']['xmlns'] = $tag['namespaceUri']; } } if (!array_key_exists('content', $tag)) { $tag['content'] = ''; } // check for multiline attributes if ($multiline === true) { if ($indent === '_auto') { $indent = str_repeat(' ', (strlen($tag['qname'])+2)); } } // create attribute list $attList = XML_Util::attributesToString( $tag['attributes'], $sortAttributes, $multiline, $indent, $linebreak ); switch ($replaceEntities) { case XML_UTIL_ENTITIES_NONE: break; case XML_UTIL_CDATA_SECTION: $tag['content'] = XML_Util::createCDataSection($tag['content']); break; default: $tag['content'] = XML_Util::replaceEntities( $tag['content'], $replaceEntities ); break; } $tag = sprintf( '<%s%s>%s', $tag['qname'], $attList, $tag['content'], $tag['qname'] ); return self::collapseEmptyTags($tag, $collapseTagMode); } /** * Create a start element * * * require_once 'XML/Util.php'; * * // create an XML start element: * $tag = XML_Util::createStartElement('myNs:myTag', * array('foo' => 'bar') ,'http://www.w3c.org/myNs#'); * * * @param string $qname qualified tagname (including namespace) * @param array $attributes array containg attributes * @param string $namespaceUri URI of the namespace * @param bool $multiline whether to create a multiline tag where each * attribute gets written to a single line * @param string $indent string used to indent attributes (_auto indents * attributes so they start at the same column) * @param string $linebreak string used for linebreaks * @param bool $sortAttributes Whether to sort the attributes or not * * @return string XML start element * @see createEndElement(), createTag() */ public static function createStartElement( $qname, $attributes = array(), $namespaceUri = null, $multiline = false, $indent = '_auto', $linebreak = "\n", $sortAttributes = true ) { // if no attributes hav been set, use empty attributes if (!isset($attributes) || !is_array($attributes)) { $attributes = array(); } if ($namespaceUri != null) { $parts = XML_Util::splitQualifiedName($qname); } // check for multiline attributes if ($multiline === true) { if ($indent === '_auto') { $indent = str_repeat(' ', (strlen($qname)+2)); } } if ($namespaceUri != null) { // is a namespace given if (isset($parts['namespace']) && !empty($parts['namespace'])) { $attributes['xmlns:' . $parts['namespace']] = $namespaceUri; } else { // define this Uri as the default namespace $attributes['xmlns'] = $namespaceUri; } } // create attribute list $attList = XML_Util::attributesToString( $attributes, $sortAttributes, $multiline, $indent, $linebreak ); $element = sprintf('<%s%s>', $qname, $attList); return $element; } /** * Create an end element * * * require_once 'XML/Util.php'; * * // create an XML start element: * $tag = XML_Util::createEndElement('myNs:myTag'); * * * @param string $qname qualified tagname (including namespace) * * @return string XML end element * @see createStartElement(), createTag() */ public static function createEndElement($qname) { $element = sprintf('', $qname); return $element; } /** * Create an XML comment * * * require_once 'XML/Util.php'; * * // create an XML start element: * $tag = XML_Util::createComment('I am a comment'); * * * @param string $content content of the comment * * @return string XML comment */ public static function createComment($content) { $comment = sprintf('', $content); return $comment; } /** * Create a CData section * * * require_once 'XML/Util.php'; * * // create a CData section * $tag = XML_Util::createCDataSection('I am content.'); * * * @param string $data data of the CData section * * @return string CData section with content */ public static function createCDataSection($data) { return sprintf( '', preg_replace('/\]\]>/', ']]]]>', strval($data)) ); } /** * Split qualified name and return namespace and local part * * * require_once 'XML/Util.php'; * * // split qualified tag * $parts = XML_Util::splitQualifiedName('xslt:stylesheet'); * * the returned array will contain two elements: * 
     * array(
     *     'namespace' => 'xslt',
     *     'localPart' => 'stylesheet'
     * );
     *
* * @param string $qname qualified tag name * @param string $defaultNs default namespace (optional) * * @return array array containing namespace and local part */ public static function splitQualifiedName($qname, $defaultNs = null) { if (strstr($qname, ':')) { $tmp = explode(':', $qname); return array( 'namespace' => $tmp[0], 'localPart' => $tmp[1] ); } return array( 'namespace' => $defaultNs, 'localPart' => $qname ); } /** * Check, whether string is valid XML name * *

XML names are used for tagname, attribute names and various * other, lesser known entities.

*

An XML name may only consist of alphanumeric characters, * dashes, undescores and periods, and has to start with a letter * or an underscore.

* * * require_once 'XML/Util.php'; * * // verify tag name * $result = XML_Util::isValidName('invalidTag?'); * if (is_a($result, 'PEAR_Error')) { * print 'Invalid XML name: ' . $result->getMessage(); * } * * * @param string $string string that should be checked * * @return mixed true, if string is a valid XML name, PEAR error otherwise * * @todo support for other charsets * @todo PEAR CS - unable to avoid 85-char limit on second preg_match */ public static function isValidName($string) { // check for invalid chars if (!is_string($string) || !strlen($string) || !preg_match('/^[[:alpha:]_]\\z/', $string[0])) { return XML_Util::raiseError( 'XML names may only start with letter or underscore', XML_UTIL_ERROR_INVALID_START ); } // check for invalid chars $match = preg_match( '/^([[:alpha:]_]([[:alnum:]\-\.]*)?:)?' . '[[:alpha:]_]([[:alnum:]\_\-\.]+)?\\z/', $string ); if (!$match) { return XML_Util::raiseError( 'XML names may only contain alphanumeric ' . 'chars, period, hyphen, colon and underscores', XML_UTIL_ERROR_INVALID_CHARS ); } // XML name is valid return true; } /** * Replacement for XML_Util::raiseError * * Avoids the necessity to always require * PEAR.php * * @param string $msg error message * @param int $code error code * * @return PEAR_Error * @todo PEAR CS - should this use include_once instead? */ public static function raiseError($msg, $code) { include_once 'PEAR.php'; return PEAR::raiseError($msg, $code); } } ?>