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<?php
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/*
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This project is Licenced under The MIT License (MIT)
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Copyright (c) 2014 Christopher Seufert
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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namespace Seufert\Hamle;
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use Seufert\Hamle\Exception\ParseError;
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use Seufert\Hamle\Parse\Filter as ParseFilter;
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use Seufert\Hamle\Text;
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/**
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* HAML Enhanced - Parser, parses hamle files,
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* executes it and leaves a .php file to cache it
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*
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* @author Chris Seufert <[email protected]>
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* @package hamle
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*/
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class Parse {
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/**
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* @param array $indents Array of indent levels
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*/
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protected $indents;
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/**
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* @var Tag[] Array of Root Document Tags
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*/
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public $root;
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/**
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* @var array $lines Each Line read in from template
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*/
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protected $lines;
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/**
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* Regex for parsing each HAMLE line
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*/
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const REGEX_PARSE_LINE = <<<'ENDREGEX'
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/^(\s*)(?:(?:([a-zA-Z0-9-]*)((?:[\.#!][\w\-\_]+)*)(\[(?:(?:\{\$[^\}]+\})?[^\\\]{]*?(?:\\.)*?(?:{[^\$])*?)+\])?)|([_\/]{1,2})|([\|:\$]\w+)|({?\$[^}]+}?)|)(?: (.*))?$/
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ENDREGEX;
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/**
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* @var int Current Line Number
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*/
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protected $lineNo;
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/**
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* @var int Total Lines in File
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*/
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protected $lineCount;
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function __construct() {
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$this->init();
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}
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/**
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* Clear Lines, and Line Number, so if output is
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* called, no output will be produced
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*/
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protected function init() {
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$this->lines = array();
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$this->lineNo = 0;
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$this->lineCount = 0;
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$this->root = array();
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}
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protected function loadLines($s) {
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$this->lines = explode("\n", str_replace("\r", "", $s));
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$this->lineCount = count($this->lines);
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$this->lineNo = 0;
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}
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function parseFilter(ParseFilter $filter) {
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foreach ($this->root as $k => $tag) {
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$this->root[$k] = $filter->filterTag($tag);
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}
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}
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function parseSnip($s) {
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//save root tags
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/** @var Tag[] $roots */
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$roots = $this->root;
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$this->root = array();
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$this->loadLines($s);
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$this->procLines();
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$this->root = array_merge($roots, $this->root);
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}
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function applySnip() {
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/** @var Tag\Snippet[] $fwdSnip */
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$fwdSnip = array();
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/** @var Tag\Snippet[] $revSnip */
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$revSnip = array();
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/** @var Tag[] $roots */
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$roots = array();
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foreach ($this->root as $snip)
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if ($snip instanceOf Tag\Snippet) {
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if ($snip->getType() == "append") {
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array_unshift($revSnip, $snip);
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} else {
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$fwdSnip[] = $snip;
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}
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} else {
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$roots[] = $snip;
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}
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foreach ($fwdSnip as $snip)
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foreach ($roots as $root)
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$snip->apply($root);
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foreach ($revSnip as $snip)
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foreach ($roots as $root)
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$snip->apply($root);
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$this->root = $roots;
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}
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/**
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* Parse HAMLE template, from a string
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* @param string $s String to parse
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* @return string Parsed HAMLE as HTML
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*/
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function str($s) {
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$this->init();
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$this->loadLines($s);
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$this->procLines();
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}
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function procLines() {
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/* @var $heir Tag[] Tag Heirachy Array */
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$heir = array();
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while ($this->lineNo < $this->lineCount) {
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$line = $this->lines[$this->lineNo];
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if (trim($line)) if (preg_match(self::REGEX_PARSE_LINE, $line, $m)) {
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if (FALSE !== strpos($m[1], "\t"))
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throw new ParseError("Tabs are not supported in templates at this time");
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$indent = strlen($m[1]);
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$tag = isset($m[2]) ? $tag = $m[2] : "";
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$classid = isset($m[3]) ? $m[3] : "";
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$params = str_replace(array('\[', '\]', '\\&'), array('[', ']', '%26'), isset($m[4]) ? $m[4] : "");
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$textcode = isset($m[5]) ? $m[5] : "";
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$text = isset($m[8]) ? $m[8] : "";
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$code = isset($m[6]) ? $m[6] : "";
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$i = self::indentLevel($indent);
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unset($m[0]);
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switch (strlen($code) ? $code[0] : ($textcode ? $textcode : "")) {
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case "|": //Control Tag
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if ($code == "|snippet")
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$hTag = new Tag\Snippet($text);
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elseif ($code == "|form")
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$hTag = new Tag\Form($text);
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elseif ($code == "|formhint")
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$hTag = new Tag\FormHint($text);
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elseif ($code == "|else") {
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$hTag = new Tag\Control(substr($code, 1), $heir[$i - 1]);
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$hTag->setVar($text);
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} else {
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$hTag = new Tag\Control(substr($code, 1));
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$hTag->setVar($text);
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}
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break;
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case ":": //Filter Tag
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$hTag = new Tag\Filter(substr($code, 1));
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$hTag->addContent($text, Text::TOKEN_CODE);
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foreach ($this->consumeBlock($indent) as $l)
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$hTag->addContent($l, Text::TOKEN_CODE);
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break;
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case "_": //String Tag
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case "__": //Unescape String Tag
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$hTag = new Tag\Text($textcode);
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$hTag->addContent($text);
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break;
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case "/": // HTML Comment
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case "//": // Non Printed Comment
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$hTag = new Tag\Comment($textcode);
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$hTag->addContent($text);
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foreach ($this->consumeBlock($indent) as $l)
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$hTag->addContent($l, Text::TOKEN_CODE);
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break;
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default:
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$attr = array();
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if(isset($params[0]) && $params[0] == "[") {
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$param = substr($params, 1, strlen($params) - 2);
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$param = str_replace('+','%2B', $param);
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$param = str_replace('\\&','%26', $param);
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// parse_str($param, $attr);
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$attr = $this->parseQueryString($param);
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}
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$class = array(); $id = ""; $ref = "";
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preg_match_all('/[#\.!][a-zA-Z0-9\-\_]+/m', $classid, $cid);
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if (isset($cid[0])) foreach ($cid[0] as $s) {
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if ($s[0] == "#") $id = substr($s, 1);
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if ($s[0] == ".") $class[] = substr($s, 1);
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if ($s[0] == "!") $ref = substr($s, 1);
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}
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if($ref)
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$hTag = new Tag\DynHtml($tag, $class, $attr, $id, $ref);
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else
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$hTag = new Tag\Html($tag, $class, $attr, $id);
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$hTag->addContent($text);
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break;
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}
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$heir[$i] = $hTag;
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if ($i > 0)
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$heir[$i - 1]->addChild($hTag);
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else
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$this->root[] = $hTag;
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} else
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throw new ParseError("Unable to parse line {$this->lineNo}\n\"$line\"/" . preg_last_error());
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$this->lineNo++;
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}
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}
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function parseQueryString($qs) {
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$out = [];
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foreach(explode('&',$qs) as $s) {
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$kv = explode('=',$s,2);
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$out[urldecode($kv[0])] = isset($kv[1])?urldecode($kv[1]):null;
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}
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return $out;
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}
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function output() {
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$out = "<?php\nuse Seufert\\Hamle;\n?>";
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foreach ($this->root as $tag)
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$out .= $tag->render();
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return $out;
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}
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function consumeBlock($indent) {
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$out = array();
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$m = array();
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while ($this->lineNo + 1 < $this->lineCount &&
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(!trim($this->lines[$this->lineNo + 1]) ||
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preg_match('/^(\s){' . $indent . '}((\s)+[^\s].*)$/',
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$this->lines[$this->lineNo + 1], $m))) {
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if (trim($this->lines[$this->lineNo + 1]))
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$out[] = $m[2];
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$this->lineNo++;
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}
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return $out;
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256
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}
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258
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function indentLevel($indent) {
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259
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if (!isset($this->indents)) $this->indents = array();
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260
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if (!count($this->indents)) {
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261
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$this->indents = array(0 => $indent);
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262
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// Key = indent level, Value = Depth in spaces
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263
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return 0;
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264
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}
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265
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foreach ($this->indents as $k => $v) {
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266
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if ($v == $indent) {
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$this->indents = array_slice($this->indents, 0, $k + 1);
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268
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return $k;
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269
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}
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270
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}
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$this->indents[] = $indent;
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return max(array_keys($this->indents));
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273
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}
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274
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275
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function getLineNo() {
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276
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return $this->lineNo;
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277
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}
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}
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cseufert /
hamle
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Adding explicit visibility (
private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.