<?php

/**
 * Parses string hash files. File format is as such:
 *
 *      DefaultKeyValue
 *      KEY: Value
 *      KEY2: Value2
 *      --MULTILINE-KEY--
 *      Multiline
 *      value.
 *
 * Which would output something similar to:
 *
 *      array(
 *          'ID' => 'DefaultKeyValue',
 *          'KEY' => 'Value',
 *          'KEY2' => 'Value2',
 *          'MULTILINE-KEY' => "Multiline\nvalue.\n",
 *      )
 *
 * We use this as an easy to use file-format for configuration schema
 * files, but the class itself is usage agnostic.
 *
 * You can use ---- to forcibly terminate parsing of a single string-hash;
 * this marker is used in multi string-hashes to delimit boundaries.
 */
class HTMLPurifier_StringHashParser
{
    /** @type string */
    public $default = 'ID';

    /**
     * Parses a file that contains a single string-hash.
     * @param string $file
     * @return array
     */
    public function parseFile($file)
    {
        if (!file_exists($file)) {
            return false;
        }
        $fh = fopen($file, 'r');
        if (!$fh) {
            return false;
        }
        $ret = $this->parseHandle($fh);
        fclose($fh);
        return $ret;
    }

    /**
     * Parses a file that contains multiple string-hashes delimited by '----'
     * @param string $file
     * @return array
     */
    public function parseMultiFile($file)
    {
        if (!file_exists($file)) {
            return false;
        }
        $ret = array();
        $fh = fopen($file, 'r');
        if (!$fh) {
            return false;
        }
        while (!feof($fh)) {
            $ret[] = $this->parseHandle($fh);
        }
        fclose($fh);
        return $ret;
    }

    /**
     * Internal parser that acepts a file handle.
     * @note While it's possible to simulate in-memory parsing by using
     *       custom stream wrappers, if such a use-case arises we should
     *       factor out the file handle into its own class.
     * @param resource $fh File handle with pointer at start of valid string-hash
     *            block.
     * @return array
     */
    protected function parseHandle($fh)
    {
        $state   = false;
        $single  = false;
        $ret     = array();
        do {
            $line = fgets($fh);
            if ($line === false) {
                break;
            }
            $line = rtrim($line, "\n\r");
            if (!$state && $line === '') {
                continue;
            }
            if ($line === '----') {
                break;
            }
            if (strncmp('--#', $line, 3) === 0) {
                // Comment
                continue;
            } elseif (strncmp('--', $line, 2) === 0) {
                // Multiline declaration
                $state = trim($line, '- ');
                if (!isset($ret[$state])) {
                    $ret[$state] = '';
                }
                continue;
            } elseif (!$state) {
                $single = true;
                if (strpos($line, ':') !== false) {
                    // Single-line declaration
                    list($state, $line) = explode(':', $line, 2);
                    $line = trim($line);
                } else {
                    // Use default declaration
                    $state  = $this->default;
                }
            }
            if ($single) {
                $ret[$state] = $line;
                $single = false;
                $state  = false;
            } else {
                $ret[$state] .= "$line\n";
            }
        } while (!feof($fh));
        return $ret;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NjU4OTA5NjY1ODMyODMzMyA0MjQ3NTI5MDk5NDIzMDE4IDg0Njg1MDg5NzkzMTk2NjU=