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msd2/phpBB3/phpbb/search/sphinx/config.php
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284
msd2/phpBB3/phpbb/search/sphinx/config.php
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<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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namespace phpbb\search\sphinx;
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/**
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* An object representing the sphinx configuration
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* Can read it from file and write it back out after modification
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*/
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class config
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{
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private $sections = array();
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/**
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* Constructor which optionally loads data from a variable
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*
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* @param string $config_data Variable containing the sphinx configuration data
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*
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* @access public
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*/
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function __construct($config_data)
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{
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if ($config_data != '')
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{
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$this->read($config_data);
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}
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}
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/**
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* Get a section object by its name
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*
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* @param string $name The name of the section that shall be returned
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* @return \phpbb\search\sphinx\config_section The section object or null if none was found
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*
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* @access public
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*/
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function get_section_by_name($name)
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{
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for ($i = 0, $size = count($this->sections); $i < $size; $i++)
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{
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// Make sure this is really a section object and not a comment
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if (($this->sections[$i] instanceof \phpbb\search\sphinx\config_section) && $this->sections[$i]->get_name() == $name)
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{
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return $this->sections[$i];
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}
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}
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}
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/**
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* Appends a new empty section to the end of the config
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*
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* @param string $name The name for the new section
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* @return \phpbb\search\sphinx\config_section The newly created section object
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*
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* @access public
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*/
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function add_section($name)
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{
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$this->sections[] = new \phpbb\search\sphinx\config_section($name, '');
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return $this->sections[count($this->sections) - 1];
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}
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/**
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* Reads the config file data
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*
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* @param string $config_data The config file data
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*
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* @access private
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*/
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function read($config_data)
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{
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$this->sections = array();
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$section = null;
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$found_opening_bracket = false;
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$in_value = false;
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foreach ($config_data as $i => $line)
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{
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// If the value of a variable continues to the next line because the line
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// break was escaped then we don't trim leading space but treat it as a part of the value
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if ($in_value)
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{
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$line = rtrim($line);
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}
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else
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{
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$line = trim($line);
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}
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// If we're not inside a section look for one
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if (!$section)
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{
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// Add empty lines and comments as comment objects to the section list
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// that way they're not deleted when reassembling the file from the sections
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if (!$line || $line[0] == '#')
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{
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$this->sections[] = new \phpbb\search\sphinx\config_comment($config_file[$i]);
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continue;
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}
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else
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{
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// Otherwise we scan the line reading the section name until we find
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// an opening curly bracket or a comment
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$section_name = '';
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$section_name_comment = '';
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$found_opening_bracket = false;
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for ($j = 0, $length = strlen($line); $j < $length; $j++)
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{
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if ($line[$j] == '#')
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{
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$section_name_comment = substr($line, $j);
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break;
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}
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if ($found_opening_bracket)
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{
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continue;
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}
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if ($line[$j] == '{')
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{
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$found_opening_bracket = true;
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continue;
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}
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$section_name .= $line[$j];
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}
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// And then we create the new section object
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$section_name = trim($section_name);
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$section = new \phpbb\search\sphinx\config_section($section_name, $section_name_comment);
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}
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}
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else
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{
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// If we're looking for variables inside a section
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$skip_first = false;
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// If we're not in a value continuing over the line feed
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if (!$in_value)
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{
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// Then add empty lines and comments as comment objects to the variable list
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// of this section so they're not deleted on reassembly
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if (!$line || $line[0] == '#')
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{
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$section->add_variable(new \phpbb\search\sphinx\config_comment($config_file[$i]));
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continue;
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}
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// As long as we haven't yet actually found an opening bracket for this section
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// we treat everything as comments so it's not deleted either
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if (!$found_opening_bracket)
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{
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if ($line[0] == '{')
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{
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$skip_first = true;
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$line = substr($line, 1);
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$found_opening_bracket = true;
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}
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else
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{
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$section->add_variable(new \phpbb\search\sphinx\config_comment($config_file[$i]));
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continue;
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}
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}
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}
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// If we did not find a comment in this line or still add to the previous
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// line's value ...
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if ($line || $in_value)
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{
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if (!$in_value)
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{
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$name = '';
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$value = '';
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$comment = '';
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$found_assignment = false;
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}
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$in_value = false;
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$end_section = false;
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/* ... then we should prase this line char by char:
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- first there's the variable name
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- then an equal sign
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- the variable value
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- possibly a backslash before the linefeed in this case we need to continue
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parsing the value in the next line
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- a # indicating that the rest of the line is a comment
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- a closing curly bracket indicating the end of this section*/
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for ($j = 0, $length = strlen($line); $j < $length; $j++)
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{
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if ($line[$j] == '#')
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{
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$comment = substr($line, $j);
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break;
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}
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else if ($line[$j] == '}')
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{
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$comment = substr($line, $j + 1);
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$end_section = true;
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break;
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}
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else if (!$found_assignment)
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{
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if ($line[$j] == '=')
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{
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$found_assignment = true;
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}
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else
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{
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$name .= $line[$j];
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}
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}
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else
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{
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if ($line[$j] == '\\' && $j == $length - 1)
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{
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$value .= "\n";
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$in_value = true;
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// Go to the next line and keep processing the value in there
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continue 2;
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}
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$value .= $line[$j];
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}
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}
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// If a name and an equal sign were found then we have append a
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// new variable object to the section
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if ($name && $found_assignment)
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{
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$section->add_variable(new \phpbb\search\sphinx\config_variable(trim($name), trim($value), ($end_section) ? '' : $comment));
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continue;
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}
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/* If we found a closing curly bracket this section has been completed
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and we can append it to the section list and continue with looking for
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the next section */
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if ($end_section)
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{
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$section->set_end_comment($comment);
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$this->sections[] = $section;
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$section = null;
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continue;
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}
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}
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// If we did not find anything meaningful up to here, then just treat it
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// as a comment
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$comment = ($skip_first) ? "\t" . substr(ltrim($config_file[$i]), 1) : $config_file[$i];
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$section->add_variable(new \phpbb\search\sphinx\config_comment($comment));
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}
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}
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}
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/**
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* Returns the config data
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*
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* @return string $data The config data that is generated
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*
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* @access public
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*/
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function get_data()
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{
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$data = "";
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foreach ($this->sections as $section)
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{
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$data .= $section->to_string();
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}
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return $data;
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}
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}
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