diff options
Diffstat (limited to 'lib/fuckhtml.php')
| -rw-r--r-- | lib/fuckhtml.php | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/lib/fuckhtml.php b/lib/fuckhtml.php new file mode 100644 index 0000000..8802511 --- /dev/null +++ b/lib/fuckhtml.php @@ -0,0 +1,361 @@ +<?php +class fuckhtml{ + + public function __construct($html = null, $isfile = false){ + + if($html !== null){ + + $this->load($html, $isfile); + } + } + + public function load($html, $isfile = false){ + + if(is_array($html)){ + + if(!isset($html["innerHTML"])){ + + throw new Exception("(load) Supplied array doesn't contain a innerHTML index"); + } + $html = $html["innerHTML"]; + } + + if($isfile){ + + $handle = fopen($html, "r"); + $fetch = fread($handle, filesize($html)); + fclose($handle); + + $this->html = $fetch; + }else{ + + $this->html = $html; + } + + $this->strlen = strlen($this->html); + } + + public function getElementsByTagName(string $tagname){ + + $out = []; + + /* + Scrape start of the tag. Example + <div class="mydiv"> ... + */ + + if($tagname == "*"){ + + $tagname = '[^\/<>\s]+'; + }else{ + + $tagname = preg_quote(strtolower($tagname)); + } + + preg_match_all( + '/<\s*(' . $tagname . ')(\s(?:[^>\'"]*|"[^"]*"|\'[^\']*\')+)?\s*>/i', + /* '/<\s*(' . $tagname . ')(\s[\S\s]*?)?>/i', */ + $this->html, + $starting_tags, + PREG_OFFSET_CAPTURE + ); + + for($i=0; $i<count($starting_tags[0]); $i++){ + + /* + Parse attributes + */ + $attributes = []; + + preg_match_all( + '/([^\/\s\\=]+)(?:\s*=\s*("[^"]*"|\'[^\']*\'|[^\s]*))?/', + $starting_tags[2][$i][0], + $regex_attributes + ); + + for($k=0; $k<count($regex_attributes[0]); $k++){ + + if(trim($regex_attributes[2][$k]) == ""){ + + $attributes[$regex_attributes[1][$k]] = + "true"; + + continue; + } + + $attributes[$regex_attributes[1][$k]] = + trim($regex_attributes[2][$k], "'\" \n\r\t\v\x00"); + } + + $out[] = [ + "tagName" => strtolower($starting_tags[1][$i][0]), + "startPos" => $starting_tags[0][$i][1], + "endPos" => 0, + "startTag" => $starting_tags[0][$i][0], + "attributes" => $attributes, + "innerHTML" => null + ]; + } + + /* + Get innerHTML + */ + // get closing tag positions + preg_match_all( + '/<\s*\/\s*(' . $tagname . ')\s*>/i', + $this->html, + $regex_closing_tags, + PREG_OFFSET_CAPTURE + ); + + // merge opening and closing tags together + for($i=0; $i<count($regex_closing_tags[1]); $i++){ + + $out[] = [ + "tagName" => strtolower($regex_closing_tags[1][$i][0]), + "endTag" => $regex_closing_tags[0][$i][0], + "startPos" => $regex_closing_tags[0][$i][1] + ]; + } + + usort( + $out, + function($a, $b){ + + return $a["startPos"] > $b["startPos"]; + } + ); + + // computer the indent level for each element + $level = []; + $count = count($out); + + for($i=0; $i<$count; $i++){ + + if(!isset($level[$out[$i]["tagName"]])){ + + $level[$out[$i]["tagName"]] = 0; + } + + if(isset($out[$i]["startTag"])){ + + // encountered starting tag + $level[$out[$i]["tagName"]]++; + $out[$i]["level"] = $level[$out[$i]["tagName"]]; + }else{ + + // encountered closing tag + $out[$i]["level"] = $level[$out[$i]["tagName"]]; + $level[$out[$i]["tagName"]]--; + } + } + + // if the indent level is the same for a div, + // we encountered _THE_ closing tag + for($i=0; $i<$count; $i++){ + + if(!isset($out[$i]["startTag"])){ + + continue; + } + + for($k=$i; $k<$count; $k++){ + + if( + isset($out[$k]["endTag"]) && + $out[$i]["tagName"] == $out[$k]["tagName"] && + $out[$i]["level"] + === $out[$k]["level"] + ){ + + $startlen = strlen($out[$i]["startTag"]); + $endlen = strlen($out[$k]["endTag"]); + + $out[$i]["endPos"] = $out[$k]["startPos"] + $endlen; + + $out[$i]["innerHTML"] = + substr( + $this->html, + $out[$i]["startPos"] + $startlen, + $out[$k]["startPos"] - ($out[$i]["startPos"] + $startlen) + ); + + $out[$i]["outerHTML"] = + substr( + $this->html, + $out[$i]["startPos"], + $out[$k]["startPos"] - $out[$i]["startPos"] + $endlen + ); + + break; + } + } + } + + // filter out ending divs + for($i=0; $i<$count; $i++){ + + if(isset($out[$i]["endTag"])){ + + unset($out[$i]); + } + + unset($out[$i]["startTag"]); + } + + return array_values($out); + } + + public function getElementsByAttributeName(string $name, $collection = null){ + + if($collection === null){ + + $collection = $this->getElementsByTagName("*"); + }elseif(is_string($collection)){ + + $collection = $this->getElementsByTagName($collection); + } + + $return = []; + foreach($collection as $elem){ + + foreach($elem["attributes"] as $attrib_name => $attrib_value){ + + if($attrib_name == $name){ + + $return[] = $elem; + continue 2; + } + } + } + + return $return; + } + + public function getElementsByFuzzyAttributeValue(string $name, string $value, $collection = null){ + + $elems = $this->getElementsByAttributeName($name, $collection); + $value = explode(" ", $value); + + $return = []; + + foreach($elems as $elem){ + + foreach($elem["attributes"] as $attrib_name => $attrib_value){ + + $attrib_value = explode(" ", $attrib_value); + $ac = count($attrib_value); + $nc = count($value); + $cr = 0; + + for($i=0; $i<$nc; $i++){ + + for($k=0; $k<$ac; $k++){ + + if($value[$i] == $attrib_value[$k]){ + + $cr++; + } + } + } + + if($cr === $nc){ + + $return[] = $elem; + continue 2; + } + } + } + + return $return; + } + + public function getElementsByAttributeValue(string $name, string $value, $collection = null){ + + $elems = $this->getElementsByAttributeName($name, $collection); + + $return = []; + + foreach($elems as $elem){ + + foreach($elem["attributes"] as $attrib_name => $attrib_value){ + + if($attrib_value == $value){ + + $return[] = $elem; + continue 2; + } + } + } + + return $return; + } + + public function getElementById(string $idname, $collection = null){ + + $id = $this->getElementsByAttributeValue("id", $idname, $collection); + + if(count($id) !== 0){ + + return $id[0]; + } + + return false; + } + + public function getElementsByClassName(string $classname, $collection = null){ + + return $this->getElementsByFuzzyAttributeValue("class", $classname, $collection); + } + + public function getTextContent($html, $whitespace = false, $trim = true){ + + if(is_array($html)){ + + if(!isset($html["innerHTML"])){ + + throw new Exception("(getTextContent) Supplied array doesn't contain a innerHTML index"); + } + $html = $html["innerHTML"]; + } + + $html = + preg_split('/\n|<\/?br>/i', $html); + + $out = ""; + for($i=0; $i<count($html); $i++){ + + $tmp = + html_entity_decode( + strip_tags( + $html[$i] + ), + ENT_QUOTES | ENT_XML1, "UTF-8" + ); + + if($trim){ + + $tmp = trim($tmp); + } + + $out .= $tmp; + + if($whitespace === true){ + + $out .= "\n"; + }else{ + + $out .= " "; + } + } + + if($trim){ + + return trim($out); + } + + return $out; + } +} + +?> |