v2.php

php-4.4.7学习linux时下载的源代码

                $first = true;
                foreach ($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;
    }

   /**
    * create a tag
    *
    * This method will call XML_Util::createTagFromArray(), which
    * is more flexible.
    *
    * <code>
    * 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#");
    * </code>
    *
    * @access   public
    * @static
    * @param    string  $qname             qualified tagname (including namespace)
    * @param    array   $attributes        array containg attributes
    * @param    mixed   $content
    * @param    string  $namespaceUri      URI of the namespace
    * @param    integer $replaceEntities   whether to replace XML special chars in content, embedd it in a CData section or none of both
    * @param    boolean $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    string  $encoding          encoding that should be used to translate content
    * @return   string  $string            XML tag
    * @see      XML_Util::createTagFromArray()
    * @uses     XML_Util::createTagFromArray() to create the tag
    */
    function createTag($qname, $attributes = array(), $content = null, $namespaceUri = null, $replaceEntities = XML_UTIL_REPLACE_ENTITIES, $multiline = false, $indent = "_auto", $linebreak = "\n", $encoding = XML_UTIL_ENTITIES_XML)
    {
        $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, $encoding);
    }

   /**
    * create a tag from an array
    * this method awaits an array in the following format
    * <pre>
    * array(
    *  "qname"        => $qname         // qualified name of the tag
    *  "namespace"    => $namespace     // namespace prefix (optional, if qname is specified or no namespace)
    *  "localpart"    => $localpart,    // local part of the tagname (optional, if qname is specified)
    *  "attributes"   => array(),       // array containing all attributes (optional)
    *  "content"      => $content,      // tag content (optional)
    *  "namespaceUri" => $namespaceUri  // namespaceUri for the given namespace (optional)
    *   )
    * </pre>
    *
    * <code>
    * 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);
    * </code>
    *
    * @access   public
    * @static
    * @param    array   $tag               tag definition
    * @param    integer $replaceEntities   whether to replace XML special chars in content, embedd it in a CData section or none of both
    * @param    boolean $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
    * @return   string  $string            XML tag
    * @see      XML_Util::createTag()
    * @uses     XML_Util::attributesToString() to serialize the attributes of the tag
    * @uses     XML_Util::splitQualifiedName() to get local part and namespace of a qualified name
    */
    function createTagFromArray($tag, $replaceEntities = XML_UTIL_REPLACE_ENTITIES, $multiline = false, $indent = "_auto", $linebreak = "\n", $encoding = XML_UTIL_ENTITIES_XML)
    {
        if (isset($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();
        }
        
        // qualified name is not given
        if (!isset($tag["qname"])) {
            // check for namespace
            if (isset($tag["namespace"]) && !empty($tag["namespace"])) {
                $tag["qname"] = $tag["namespace"].":".$tag["localPart"];
            } else {
                $tag["qname"] = $tag["localPart"];
            }
        // namespace URI is set, but no namespace
        } elseif (isset($tag["namespaceUri"]) && !isset($tag["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"];
            }
        }

        // 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"], true, $multiline, $indent, $linebreak );
        if (!isset($tag["content"]) || (string)$tag["content"] == '') {
            $tag    =   sprintf("<%s%s />", $tag["qname"], $attList);
        } else {
            if ($replaceEntities == XML_UTIL_REPLACE_ENTITIES) {
                $tag["content"] = XML_Util::replaceEntities($tag["content"], $encoding);
            } elseif ($replaceEntities == XML_UTIL_CDATA_SECTION) {
                $tag["content"] = XML_Util::createCDataSection($tag["content"]);
            }
            $tag    =   sprintf("<%s%s>%s</%s>", $tag["qname"], $attList, $tag["content"], $tag["qname"] );
        }        
        return  $tag;
    }

   /**
    * create a start element
    *
    * <code>
    * require_once 'XML/Util.php';
    * 
    * // create an XML start element:
    * $tag = XML_Util::createStartElement("myNs:myTag", array("foo" => "bar") ,"http://www.w3c.org/myNs#");
    * </code>
    *
    * @access   public
    * @static
    * @param    string  $qname             qualified tagname (including namespace)
    * @param    array   $attributes        array containg attributes
    * @param    string  $namespaceUri      URI of the namespace
    * @param    boolean $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
    * @return   string  $string            XML start element
    * @see      XML_Util::createEndElement(), XML_Util::createTag()
    */
    function createStartElement($qname, $attributes = array(), $namespaceUri = null, $multiline = false, $indent = '_auto', $linebreak = "\n")
    {
        // if no attributes hav been set, use empty attributes
        if (!isset($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, true, $multiline, $indent, $linebreak);
        $element    =   sprintf("<%s%s>", $qname, $attList);
        return  $element;
    }

   /**
    * create an end element
    *
    * <code>
    * require_once 'XML/Util.php';
    * 
    * // create an XML start element:
    * $tag = XML_Util::createEndElement("myNs:myTag");
    * </code>
    *
    * @access   public
    * @static
    * @param    string  $qname             qualified tagname (including namespace)
    * @return   string  $string            XML end element
    * @see      XML_Util::createStartElement(), XML_Util::createTag()
    */
    function createEndElement($qname)
    {
        $element    =   sprintf("</%s>", $qname);
        return  $element;
    }
    
   /**
    * create an XML comment
    *
    * <code>
    * require_once 'XML/Util.php';
    * 
    * // create an XML start element:
    * $tag = XML_Util::createComment("I am a comment");
    * </code>
    *
    * @access   public
    * @static
    * @param    string  $content           content of the comment
    * @return   string  $comment           XML comment
    */
    function createComment($content)
    {
        $comment    =   sprintf("<!-- %s -->", $content);
        return  $comment;
    }
    
   /**
    * create a CData section
    *
    * <code>
    * require_once 'XML/Util.php';
    * 
    * // create a CData section
    * $tag = XML_Util::createCDataSection("I am content.");
    * </code>
    *
    * @access   public
    * @static
    * @param    string  $data              data of the CData section
    * @return   string  $string            CData section with content
    */
    function createCDataSection($data)
    {
        return  sprintf("<![CDATA[%s]]>", $data);
    }

   /**
    * split qualified name and return namespace and local part
    *
    * <code>
    * require_once 'XML/Util.php';
    * 
    * // split qualified tag
    * $parts = XML_Util::splitQualifiedName("xslt:stylesheet");
    * </code>
    * the returned array will contain two elements:
    * <pre>
    * array(
    *       "namespace" => "xslt",
    *       "localPart" => "stylesheet"
    *      );
    * </pre>
    *
    * @access public
    * @static
    * @param  string    $qname      qualified tag name
    * @param  string    $defaultNs  default namespace (optional)
    * @return array     $parts      array containing namespace and local part
    */
    function splitQualifiedName($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
    *
    * <p>XML names are used for tagname, attribute names and various
    * other, lesser known entities.</p>
    * <p>An XML name may only consist of alphanumeric characters,
    * dashes, undescores and periods, and has to start with a letter
    * or an underscore.
    * </p>
    *
    * <code>
    * require_once 'XML/Util.php';
    * 
    * // verify tag name
    * $result = XML_Util::isValidName("invalidTag?");
    * if (XML_Util::isError($result)) {
    *    print "Invalid XML name: " . $result->getMessage();
    * }
    * </code>
    *
    * @access  public
    * @static
    * @param   string  $string string that should be checked
    * @return  mixed   $valid  true, if string is a valid XML name, PEAR error otherwise
    * @todo    support for other charsets
    */
    function isValidName($string)
    {
        // check for invalid chars
        if (!preg_match("/^[[:alnum:]_\-.]$/", $string{0})) {
            return XML_Util::raiseError( "XML names may only start with letter or underscore", XML_UTIL_ERROR_INVALID_START );
        }
        
        // check for invalid chars
        if (!preg_match("/^([a-zA-Z_]([a-zA-Z0-9_\-\.]*)?:)?[a-zA-Z_]([a-zA-Z0-9_\-\.]+)?$/", $string)) {
            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
    *
    * @access   public
    * @param    string      error message
    * @param    integer     error code
    * @return   object PEAR_Error
    */
    function raiseError($msg, $code)
    {
        require_once 'PEAR.php';
        return PEAR::raiseError($msg, $code);
    }
}
//} // if (!class_exists('XML_Util'))
?>