1 files changed, 284 insertions, 0 deletions
diff --git a/phpBB/phpbb/search/sphinx/config.php b/phpBB/phpbb/search/sphinx/config.php
new file mode 100644
index 0000000000..675649b460
--- /dev/null
+++ b/phpBB/phpbb/search/sphinx/config.php
@@ -0,0 +1,284 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb\search\sphinx;
+
+/**
+* An object representing the sphinx configuration
+* Can read it from file and write it back out after modification
+*/
+class config
+{
+	private $sections = array();
+
+	/**
+	* Constructor which optionally loads data from a variable
+	*
+	* @param	string	$config_data	Variable containing the sphinx configuration data
+	*
+	* @access	public
+	*/
+	function __construct($config_data)
+	{
+		if ($config_data != '')
+		{
+			$this->read($config_data);
+		}
+	}
+
+	/**
+	* Get a section object by its name
+	*
+	* @param	string 								$name	The name of the section that shall be returned
+	* @return	\phpbb\search\sphinx\config_section			The section object or null if none was found
+	*
+	* @access	public
+	*/
+	function get_section_by_name($name)
+	{
+		for ($i = 0, $size = sizeof($this->sections); $i < $size; $i++)
+		{
+			// Make sure this is really a section object and not a comment
+			if (($this->sections[$i] instanceof \phpbb\search\sphinx\config_section) && $this->sections[$i]->get_name() == $name)
+			{
+				return $this->sections[$i];
+			}
+		}
+	}
+
+	/**
+	* Appends a new empty section to the end of the config
+	*
+	* @param	string								$name	The name for the new section
+	* @return	\phpbb\search\sphinx\config_section			The newly created section object
+	*
+	* @access	public
+	*/
+	function add_section($name)
+	{
+		$this->sections[] = new \phpbb\search\sphinx\config_section($name, '');
+		return $this->sections[sizeof($this->sections) - 1];
+	}
+
+	/**
+	* Reads the config file data
+	*
+	* @param	string	$config_data	The config file data
+	*
+	* @access	private
+	*/
+	function read($config_data)
+	{
+		$this->sections = array();
+
+		$section = null;
+		$found_opening_bracket = false;
+		$in_value = false;
+
+		foreach ($config_data as $i => $line)
+		{
+			// If the value of a variable continues to the next line because the line
+			// break was escaped then we don't trim leading space but treat it as a part of the value
+			if ($in_value)
+			{
+				$line = rtrim($line);
+			}
+			else
+			{
+				$line = trim($line);
+			}
+
+			// If we're not inside a section look for one
+			if (!$section)
+			{
+				// Add empty lines and comments as comment objects to the section list
+				// that way they're not deleted when reassembling the file from the sections
+				if (!$line || $line[0] == '#')
+				{
+					$this->sections[] = new \phpbb\search\sphinx\config_comment($config_file[$i]);
+					continue;
+				}
+				else
+				{
+					// Otherwise we scan the line reading the section name until we find
+					// an opening curly bracket or a comment
+					$section_name = '';
+					$section_name_comment = '';
+					$found_opening_bracket = false;
+					for ($j = 0, $length = strlen($line); $j < $length; $j++)
+					{
+						if ($line[$j] == '#')
+						{
+							$section_name_comment = substr($line, $j);
+							break;
+						}
+
+						if ($found_opening_bracket)
+						{
+							continue;
+						}
+
+						if ($line[$j] == '{')
+						{
+							$found_opening_bracket = true;
+							continue;
+						}
+
+						$section_name .= $line[$j];
+					}
+
+					// And then we create the new section object
+					$section_name = trim($section_name);
+					$section = new \phpbb\search\sphinx\config_section($section_name, $section_name_comment);
+				}
+			}
+			else
+			{
+				// If we're looking for variables inside a section
+				$skip_first = false;
+
+				// If we're not in a value continuing over the line feed
+				if (!$in_value)
+				{
+					// Then add empty lines and comments as comment objects to the variable list
+					// of this section so they're not deleted on reassembly
+					if (!$line || $line[0] == '#')
+					{
+						$section->add_variable(new \phpbb\search\sphinx\config_comment($config_file[$i]));
+						continue;
+					}
+
+					// As long as we haven't yet actually found an opening bracket for this section
+					// we treat everything as comments so it's not deleted either
+					if (!$found_opening_bracket)
+					{
+						if ($line[0] == '{')
+						{
+							$skip_first = true;
+							$line = substr($line, 1);
+							$found_opening_bracket = true;
+						}
+						else
+						{
+							$section->add_variable(new \phpbb\search\sphinx\config_comment($config_file[$i]));
+							continue;
+						}
+					}
+				}
+
+				// If we did not find a comment in this line or still add to the previous
+				// line's value ...
+				if ($line || $in_value)
+				{
+					if (!$in_value)
+					{
+						$name = '';
+						$value = '';
+						$comment = '';
+						$found_assignment = false;
+					}
+					$in_value = false;
+					$end_section = false;
+
+					/* ... then we should prase this line char by char:
+					 - first there's the variable name
+					 - then an equal sign
+					 - the variable value
+					 - possibly a backslash before the linefeed in this case we need to continue
+					   parsing the value in the next line
+					 - a # indicating that the rest of the line is a comment
+					 - a closing curly bracket indicating the end of this section*/
+					for ($j = 0, $length = strlen($line); $j < $length; $j++)
+					{
+						if ($line[$j] == '#')
+						{
+							$comment = substr($line, $j);
+							break;
+						}
+						else if ($line[$j] == '}')
+						{
+							$comment = substr($line, $j + 1);
+							$end_section = true;
+							break;
+						}
+						else if (!$found_assignment)
+						{
+							if ($line[$j] == '=')
+							{
+								$found_assignment = true;
+							}
+							else
+							{
+								$name .= $line[$j];
+							}
+						}
+						else
+						{
+							if ($line[$j] == '\\' && $j == $length - 1)
+							{
+								$value .= "\n";
+								$in_value = true;
+								// Go to the next line and keep processing the value in there
+								continue 2;
+							}
+							$value .= $line[$j];
+						}
+					}
+
+					// If a name and an equal sign were found then we have append a
+					// new variable object to the section
+					if ($name && $found_assignment)
+					{
+						$section->add_variable(new \phpbb\search\sphinx\config_variable(trim($name), trim($value), ($end_section) ? '' : $comment));
+						continue;
+					}
+
+					/* If we found a closing curly bracket this section has been completed
+					and we can append it to the section list and continue with looking for
+					the next section */
+					if ($end_section)
+					{
+						$section->set_end_comment($comment);
+						$this->sections[] = $section;
+						$section = null;
+						continue;
+					}
+				}
+
+				// If we did not find anything meaningful up to here, then just treat it
+				// as a comment
+				$comment = ($skip_first) ? "\t" . substr(ltrim($config_file[$i]), 1) : $config_file[$i];
+				$section->add_variable(new \phpbb\search\sphinx\config_comment($comment));
+			}
+		}
+
+	}
+
+	/**
+	* Returns the config data
+	*
+	* @return	string	$data	The config data that is generated
+	*
+	* @access	public
+	*/
+	function get_data()
+	{
+		$data = "";
+		foreach ($this->sections as $section)
+		{
+			$data .= $section->to_string();
+		}
+
+		return $data;
+	}
+}