--- /dev/null
+<?php
+/**
+ * SimplePie
+ *
+ * A PHP-Based RSS and Atom Feed Framework.
+ * Takes the hard work out of managing a complete RSS/Atom solution.
+ *
+ * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
+ * 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.
+ *
+ * * Neither the name of the SimplePie Team nor the names of its contributors may 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 HOLDERS
+ * AND 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.
+ *
+ * @package SimplePie
+ * @version 1.3.1
+ * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @author Ryan Parman
+ * @author Geoffrey Sneddon
+ * @author Ryan McCue
+ * @link http://simplepie.org/ SimplePie
+ * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+ */
+
+
+/**
+ * Parses the XML Declaration
+ *
+ * @package SimplePie
+ * @subpackage Parsing
+ */
+class SimplePie_XML_Declaration_Parser
+{
+ /**
+ * XML Version
+ *
+ * @access public
+ * @var string
+ */
+ var $version = '1.0';
+
+ /**
+ * Encoding
+ *
+ * @access public
+ * @var string
+ */
+ var $encoding = 'UTF-8';
+
+ /**
+ * Standalone
+ *
+ * @access public
+ * @var bool
+ */
+ var $standalone = false;
+
+ /**
+ * Current state of the state machine
+ *
+ * @access private
+ * @var string
+ */
+ var $state = 'before_version_name';
+
+ /**
+ * Input data
+ *
+ * @access private
+ * @var string
+ */
+ var $data = '';
+
+ /**
+ * Input data length (to avoid calling strlen() everytime this is needed)
+ *
+ * @access private
+ * @var int
+ */
+ var $data_length = 0;
+
+ /**
+ * Current position of the pointer
+ *
+ * @var int
+ * @access private
+ */
+ var $position = 0;
+
+ /**
+ * Create an instance of the class with the input data
+ *
+ * @access public
+ * @param string $data Input data
+ */
+ public function __construct($data)
+ {
+ $this->data = $data;
+ $this->data_length = strlen($this->data);
+ }
+
+ /**
+ * Parse the input data
+ *
+ * @access public
+ * @return bool true on success, false on failure
+ */
+ public function parse()
+ {
+ while ($this->state && $this->state !== 'emit' && $this->has_data())
+ {
+ $state = $this->state;
+ $this->$state();
+ }
+ $this->data = '';
+ if ($this->state === 'emit')
+ {
+ return true;
+ }
+ else
+ {
+ $this->version = '';
+ $this->encoding = '';
+ $this->standalone = '';
+ return false;
+ }
+ }
+
+ /**
+ * Check whether there is data beyond the pointer
+ *
+ * @access private
+ * @return bool true if there is further data, false if not
+ */
+ public function has_data()
+ {
+ return (bool) ($this->position < $this->data_length);
+ }
+
+ /**
+ * Advance past any whitespace
+ *
+ * @return int Number of whitespace characters passed
+ */
+ public function skip_whitespace()
+ {
+ $whitespace = strspn($this->data, "\x09\x0A\x0D\x20", $this->position);
+ $this->position += $whitespace;
+ return $whitespace;
+ }
+
+ /**
+ * Read value
+ */
+ public function get_value()
+ {
+ $quote = substr($this->data, $this->position, 1);
+ if ($quote === '"' || $quote === "'")
+ {
+ $this->position++;
+ $len = strcspn($this->data, $quote, $this->position);
+ if ($this->has_data())
+ {
+ $value = substr($this->data, $this->position, $len);
+ $this->position += $len + 1;
+ return $value;
+ }
+ }
+ return false;
+ }
+
+ public function before_version_name()
+ {
+ if ($this->skip_whitespace())
+ {
+ $this->state = 'version_name';
+ }
+ else
+ {
+ $this->state = false;
+ }
+ }
+
+ public function version_name()
+ {
+ if (substr($this->data, $this->position, 7) === 'version')
+ {
+ $this->position += 7;
+ $this->skip_whitespace();
+ $this->state = 'version_equals';
+ }
+ else
+ {
+ $this->state = false;
+ }
+ }
+
+ public function version_equals()
+ {
+ if (substr($this->data, $this->position, 1) === '=')
+ {
+ $this->position++;
+ $this->skip_whitespace();
+ $this->state = 'version_value';
+ }
+ else
+ {
+ $this->state = false;
+ }
+ }
+
+ public function version_value()
+ {
+ if ($this->version = $this->get_value())
+ {
+ $this->skip_whitespace();
+ if ($this->has_data())
+ {
+ $this->state = 'encoding_name';
+ }
+ else
+ {
+ $this->state = 'emit';
+ }
+ }
+ else
+ {
+ $this->state = false;
+ }
+ }
+
+ public function encoding_name()
+ {
+ if (substr($this->data, $this->position, 8) === 'encoding')
+ {
+ $this->position += 8;
+ $this->skip_whitespace();
+ $this->state = 'encoding_equals';
+ }
+ else
+ {
+ $this->state = 'standalone_name';
+ }
+ }
+
+ public function encoding_equals()
+ {
+ if (substr($this->data, $this->position, 1) === '=')
+ {
+ $this->position++;
+ $this->skip_whitespace();
+ $this->state = 'encoding_value';
+ }
+ else
+ {
+ $this->state = false;
+ }
+ }
+
+ public function encoding_value()
+ {
+ if ($this->encoding = $this->get_value())
+ {
+ $this->skip_whitespace();
+ if ($this->has_data())
+ {
+ $this->state = 'standalone_name';
+ }
+ else
+ {
+ $this->state = 'emit';
+ }
+ }
+ else
+ {
+ $this->state = false;
+ }
+ }
+
+ public function standalone_name()
+ {
+ if (substr($this->data, $this->position, 10) === 'standalone')
+ {
+ $this->position += 10;
+ $this->skip_whitespace();
+ $this->state = 'standalone_equals';
+ }
+ else
+ {
+ $this->state = false;
+ }
+ }
+
+ public function standalone_equals()
+ {
+ if (substr($this->data, $this->position, 1) === '=')
+ {
+ $this->position++;
+ $this->skip_whitespace();
+ $this->state = 'standalone_value';
+ }
+ else
+ {
+ $this->state = false;
+ }
+ }
+
+ public function standalone_value()
+ {
+ if ($standalone = $this->get_value())
+ {
+ switch ($standalone)
+ {
+ case 'yes':
+ $this->standalone = true;
+ break;
+
+ case 'no':
+ $this->standalone = false;
+ break;
+
+ default:
+ $this->state = false;
+ return;
+ }
+
+ $this->skip_whitespace();
+ if ($this->has_data())
+ {
+ $this->state = false;
+ }
+ else
+ {
+ $this->state = 'emit';
+ }
+ }
+ else
+ {
+ $this->state = false;
+ }
+ }
+}
scripts.mit.edu / autoinstalls / wordpress.git / blobdiff