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Current File : //proc/1857783/root/var/www/tif-dev/wp-content/plugins/lazy-blocks/vendor/Handlebars/Arguments.php

<?php
/**
 * This file is part of Handlebars-php
 *
 * PHP version 5.3
 *
 * @category  Xamin
 * @package   Handlebars
 * @author    Dmitriy Simushev <simushevds@gmail.com>
 * @copyright 2014 Authors
 * @license   MIT <http://opensource.org/licenses/MIT>
 * @version   GIT: $Id$
 * @link      http://xamin.ir
 */

namespace Handlebars;

/**
 * Encapsulates helpers arguments.
 *
 * @category  Xamin
 * @package   Handlebars
 * @author    Dmitriy Simushev <simushevds@gmail.com>
 * @copyright 2014 Authors
 * @license   MIT <http://opensource.org/licenses/MIT>
 * @version   Release: @package_version@
 * @link      http://xamin.ir
 */
class Arguments
{
    /**
     * List of named arguments.
     *
     * @var array
     */
    protected $namedArgs = array();

    /**
     * List of positional arguments.
     *
     * @var array
     */
    protected $positionalArgs = array();

    /**
     * The original arguments string that was used to fill in arguments.
     *
     * @var string
     */
    protected $originalString = '';

    /**
     * Class constructor.
     *
     * @param string $args_string Arguments string as passed to a helper.
     */
    public function __construct($args_string = false)
    {
        $this->originalString = (string)$args_string;

        if ($this->originalString !== '') {
            $this->parse($args_string);
        }
    }

    /**
     * Returns string representation of the arguments list.
     *
     * This method is here mostly for backward compatibility reasons.
     *
     * @return string
     */
    public function __toString()
    {
        return $this->originalString;
    }

    /**
     * Returns a list of named arguments.
     *
     * @return array
     */
    public function getNamedArguments()
    {
        return $this->namedArgs;
    }

    /**
     * Returns a list of positional arguments.
     *
     * @return array
     */
    public function getPositionalArguments()
    {
        return $this->positionalArgs;
    }

    /**
     * Breaks an argument string into arguments and stores them inside the
     * object.
     *
     * @param string $args_string Arguments string as passed to a helper.
     *
     * @return void
     * @throws \InvalidArgumentException
     */
    protected function parse($args_string)
    {
        $bad_chars = preg_quote(Context::NOT_VALID_NAME_CHARS, '#');
        $bad_seg_chars = preg_quote(Context::NOT_VALID_SEGMENT_NAME_CHARS, '#');

        $name_chunk = '(?:[^' . $bad_chars . '\s]+)|(?:\[[^' . $bad_seg_chars . ']+\])';
        $variable_name = '(?:\.\.\/)*(?:(?:' . $name_chunk . ')[\.\/])*(?:' . $name_chunk  . ')\.?';
        $special_variable_name = '@[a-z]+';
        $escaped_value = '(?:(?<!\\\\)".*?(?<!\\\\)"|(?<!\\\\)\'.*?(?<!\\\\)\')';
        $argument_name = $name_chunk;
        $argument_value = $variable_name . '|' . $escaped_value . '|' . $special_variable_name;
        $positional_argument = '#^(' . $argument_value . ')#';
        $named_argument = '#^(' . $argument_name . ')\s*=\s*(' . $argument_value . ')#';

        $current_str = trim($args_string);

        // Split arguments string
        while (strlen($current_str) !== 0) {
            if (preg_match($named_argument, $current_str, $matches)) {
                // Named argument found
                $name = $this->prepareArgumentName($matches[1]);
                $value = $this->prepareArgumentValue($matches[2]);

                $this->namedArgs[$name] = $value;

                // Remove found argument from arguments string.
                $current_str = ltrim(substr($current_str, strlen($matches[0])));
            } elseif (preg_match($positional_argument, $current_str, $matches)) {
                // A positional argument found. It cannot follow named arguments
                if (count($this->namedArgs) !== 0) {
                    throw new \InvalidArgumentException('Positional arguments cannot follow named arguments');
                }

                $this->positionalArgs[] = $this->prepareArgumentValue($matches[1]);

                // Remove found argument from arguments string.
                $current_str = ltrim(substr($current_str, strlen($matches[0])));
            } else {
                throw new \InvalidArgumentException(
                    sprintf(
                        'Malformed arguments string: "%s"',
                        $args_string
                    )
                );
            }
        }
    }

    /**
     * Prepares argument's value to add to arguments list.
     *
     * The method unescapes value and wrap it into \Handlebars\StringWrapper
     * class if needed.
     *
     * @param string $value Argument's value
     *
     * @return string|\Handlebars\StringWrapper
     */
    protected function prepareArgumentValue($value)
    {
        // Check if argument's value is a quoted string literal
        if ($value[0] == "'" || $value[0] == '"') {
            // Remove enclosing quotes and unescape
            return new StringWrapper(stripcslashes(substr($value, 1, -1)));
        }

        // Check if the value is an integer literal
        if (preg_match("/^-?\d+$/", $value)) {
            // Wrap the value into the String class to tell the Context that
            // it's a value and not a variable name.
            return new StringWrapper($value);
        }

        return $value;
    }

    /**
     * Prepares argument's name.
     *
     * Remove sections braces if needed.
     *
     * @param strign $name Argument's name
     *
     * @return string
     */
    protected function prepareArgumentName($name)
    {
        // Check if argument's name is a segment
        if ($name[0] == '[') {
            $name = substr($name, 1, -1);
        }

        return $name;
    }
}

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