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pharse_formatter.php
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<?php
/**
* @author RESS.IO Team
* @package Pharse
* @link https://github.com/ressio/pharse
*
* FORKED FROM
* @author Niels A.D.
* @package Ganon
* @link http://code.google.com/p/ganon/
*
* @license http://dev.perl.org/licenses/artistic.html Artistic License
*/
/**
* Class used to format/minify HTML nodes
*
* Used like:
* <code>
* <?php
* $formatter = new HTML_Formatter();
* $formatter->format($root);
* ?>
* </code>
*/
class HTML_Formatter
{
/**
* Determines which elements start on a new line and which function as block
* @var array('element' => array('new_line' => true, 'as_block' => true, 'format_inside' => true))
*/
public $block_elements = array(
'p' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'h1' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'h2' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'h3' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'h4' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'h5' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'h6' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'form' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'fieldset' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'legend' => array('new_line' => true, 'as_block' => false, 'format_inside' => true),
'dl' => array('new_line' => true, 'as_block' => false, 'format_inside' => true),
'dt' => array('new_line' => true, 'as_block' => false, 'format_inside' => true),
'dd' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'ol' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'ul' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'li' => array('new_line' => true, 'as_block' => false, 'format_inside' => true),
'table' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'tr' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'dir' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'menu' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'address' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'blockquote' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'center' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'del' => array('new_line' => true, 'as_block' => false, 'format_inside' => true),
//'div' => array('new_line' => false, 'as_block' => true, 'format_inside' => true),
'hr' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'ins' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'noscript' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'pre' => array('new_line' => true, 'as_block' => true, 'format_inside' => false),
'script' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'style' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'html' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'head' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'body' => array('new_line' => true, 'as_block' => true, 'format_inside' => true),
'title' => array('new_line' => true, 'as_block' => false, 'format_inside' => false)
);
/**
* Determines which characters are considered whitespace
* @var array("\t" => true) True to recognize as new line
*/
public $whitespace = array(
' ' => false,
"\t" => false,
"\x0B" => false,
"\0" => false,
"\n" => true,
"\r" => true
);
/**
* String that is used to generate correct indenting
* @var string
*/
public $indent_string = ' ';
/**
* String that is used to break lines
* @var string
*/
public $linebreak_string = "\n";
/**
* Other formatting options
* @var array
*/
public $options = array(
'img_alt' => '',
'self_close_str' => null,
'attribute_shorttag' => false,
'sort_attributes' => false,
'attributes_case' => CASE_LOWER,
'minify_script' => true
);
/**
* Errors found during formatting
* @var array
*/
public $errors = array();
/**
* Class constructor
* @param array $options {@link $options}
*/
public function __construct($options = array())
{
$this->options = array_merge($this->options, $options);
}
/**
* Class magic invoke method, performs {@link format()}
* @param HTML_Node $node
* @return string
* @access private
*/
public function __invoke($node)
{
return $this->format($node);
}
/**
* Minifies HTML / removes unneeded whitespace
* @param HTML_Node $root
* @param bool $strip_comments
* @param bool $recursive
*/
static public function minify_html($root, $strip_comments = true, $recursive = true)
{
if ($strip_comments) {
foreach ($root->select(':comment', false, $recursive, true) as $c) {
/** @var HTML_Node $c */
$prev = $c->getSibling(-1);
$next = $c->getSibling(1);
$c->delete();
if ($prev && $next && ($prev->isText()) && ($next->isText())) {
/** @var HTML_Node_Text $prev */
/** @var HTML_Node_Text $next */
$prev->text .= $next->text;
$next->delete();
}
}
}
foreach ($root->select('(!pre + !xmp + !style + !script + !"?php" + !"~text~" + !"~comment~"):not-empty > "~text~"', false, $recursive, true) as $c) {
/** @var HTML_Node_Text $c */
$c->text = preg_replace('`\s+`', ' ', $c->text);
}
}
/**
* Minifies javascript using JSMin+
* @param HTML_Node $root
* @param string $indent_string
* @param bool $wrap_comment Wrap javascript in HTML comments (<!-- ~text~ //-->)
* @param bool $recursive
* @return bool|array Array of errors on failure, true on succes
*/
static public function minify_javascript($root, $indent_string = ' ', $wrap_comment = true, $recursive = true)
{
include_once('third party/jsminplus.php');
$errors = array();
foreach ($root->select('script:not-empty > "~text~"', false, $recursive, true) as $c) {
/** @var HTML_Node_Text $c */
try {
$text = $c->text;
while ($text) {
$text = trim($text);
//Remove comment/CDATA tags at begin and end
if (substr($text, 0, 4) === '<!--') {
$text = substr($text, 5);
continue;
} elseif (strtolower(substr($text, 0, 9)) === '<![cdata[') {
$text = substr($text, 10);
continue;
}
if (($end = substr($text, -3)) && (($end === '-->') || ($end === ']]>'))) {
$text = substr($text, 0, -3);
continue;
}
break;
}
if (trim($text)) {
$text = JSMinPlus::minify($text);
if ($wrap_comment) {
$text = "<!--\n" . $text . "\n//-->";
}
if ($indent_string && ($wrap_comment || (strpos($text, "\n") !== false))) {
$text = self::indent_text("\n" . $text, $c->indent(), $indent_string);
}
}
$c->text = $text;
} catch (Exception $e) {
$errors[] = array($e, $c->parent->dumpLocation());
}
}
return (($errors) ? $errors : true);
}
/**
* Formats HTML
* @param HTML_Node $root
* @param bool|int $recursive
* @access private
* @return bool
*/
public function format_html($root, $recursive = null)
{
if ($recursive === null) {
$recursive = true;
self::minify_html($root);
} elseif (is_int($recursive)) {
$recursive = (($recursive > 1) ? $recursive - 1 : false);
}
$root_tag = strtolower($root->tag);
$in_block = isset($this->block_elements[$root_tag]) && $this->block_elements[$root_tag]['as_block'];
$child_count = count($root->children);
if (isset($this->options['attributes_case']) && $this->options['attributes_case']) {
$root->attributes = array_change_key_case($root->attributes, $this->options['attributes_case']);
$root->attributes_ns = null;
}
if (isset($this->options['sort_attributes']) && $this->options['sort_attributes']) {
if ($this->options['sort_attributes'] === 'reverse') {
krsort($root->attributes);
} else {
ksort($root->attributes);
}
}
if ($root->select(':element', true, false, true)) {
$root->setTag(strtolower($root->tag), true);
if (($this->options['img_alt'] !== null) && ($root_tag === 'img') && (!isset($root->alt))) {
$root->alt = $this->options['img_alt'];
}
}
if ($this->options['self_close_str'] !== null) {
$root->self_close_str = $this->options['self_close_str'];
}
if ($this->options['attribute_shorttag'] !== null) {
$root->attribute_shorttag = $this->options['attribute_shorttag'];
}
$prev = null;
$n_tag = '';
$prev_tag = '';
$as_block = false;
$prev_asblock = false;
for ($i = 0; $i < $child_count; $i++) {
/** @var HTML_Node $n */
$n = $root->children[$i];
$indent = $n->indent();
if (!$n->isText()) {
$n_tag = strtolower($n->tag);
$new_line = isset($this->block_elements[$n_tag]) && $this->block_elements[$n_tag]['new_line'];
$as_block = isset($this->block_elements[$n_tag]) && $this->block_elements[$n_tag]['as_block'];
$format_inside = ((!isset($this->block_elements[$n_tag])) || $this->block_elements[$n_tag]['format_inside']);
/** @var HTML_Node_Text $prev */
if ($prev && ($prev->isText()) && $prev->text && ($char = $prev->text[strlen($prev->text) - 1]) && isset($this->whitespace[$char])) {
if ($this->whitespace[$char]) {
$prev->text .= str_repeat($this->indent_string, $indent);
} else {
$prev->text = substr_replace($prev->text, $this->linebreak_string . str_repeat($this->indent_string, $indent), -1, 1);
}
} elseif (($new_line || $prev_asblock || ($in_block && ($i === 0)))) {
if ($prev && ($prev->isText())) {
$prev->text .= $this->linebreak_string . str_repeat($this->indent_string, $indent);
} else {
$root->addText($this->linebreak_string . str_repeat($this->indent_string, $indent), $i);
++$child_count;
}
}
if ($format_inside && count($n->children)) {
/** @var HTML_Node_Text $last */
$last = $n->children[count($n->children) - 1];
$last_tag = ($last) ? strtolower($last->tag) : '';
$last_asblock = ($last_tag && isset($this->block_elements[$last_tag]) && $this->block_elements[$last_tag]['as_block']);
if (($n->childCount(true) > 0) || (trim($n->getPlainText()))) {
if ($last && ($last->isText()) && $last->text && ($char = $last->text[strlen($last->text) - 1]) && isset($this->whitespace[$char])) {
if ($as_block || ($last->index() > 0) || isset($this->whitespace[$last->text[0]])) {
if ($this->whitespace[$char]) {
$last->text .= str_repeat($this->indent_string, $indent);
} else {
$last->text = substr_replace($last->text, $this->linebreak_string . str_repeat($this->indent_string, $indent), -1, 1);
}
}
} elseif (($as_block || $last_asblock || ($in_block && ($i === 0))) && $last) {
if ($last && ($last->isText())) {
$last->text .= $this->linebreak_string . str_repeat($this->indent_string, $indent);
} else {
$n->addText($this->linebreak_string . str_repeat($this->indent_string, $indent));
}
}
} elseif (!trim($n->getInnerText())) {
$n->clear();
}
if ($recursive) {
$this->format_html($n, $recursive);
}
}
} elseif (trim($n->text) && ((($i - 1 < $child_count) && ($char = $n->text[0]) && isset($this->whitespace[$char])) || ($in_block && ($i === 0)))) {
if (isset($this->whitespace[$char])) {
if ($this->whitespace[$char]) {
$n->text = str_repeat($this->indent_string, $indent) . $n->text;
} else {
$n->text = substr_replace($n->text, $this->linebreak_string . str_repeat($this->indent_string, $indent), 0, 1);
}
} else {
$n->text = $this->linebreak_string . str_repeat($this->indent_string, $indent) . $n->text;
}
}
$prev = $n;
$prev_tag = $n_tag;
$prev_asblock = $as_block;
}
return true;
}
/**
* Formats HTML/Javascript
* @param HTML_Node $node
* @return string
* @see format_html()
*/
public function format($node)
{
$this->errors = array();
if ($this->options['minify_script']) {
$a = self::minify_javascript($node, $this->indent_string, true, true);
if (is_array($a)) {
foreach ($a as $error) {
$this->errors[] = $error[0]->getMessage() . ' >>> ' . $error[1];
}
}
}
return $this->format_html($node);
}
/**
* Indents text
* @param string $text
* @param int $indent
* @param string $indent_string
* @return string
*/
static public function indent_text($text, $indent, $indent_string = ' ')
{
if ($indent && $indent_string) {
return str_replace("\n", "\n" . str_repeat($indent_string, $indent), $text);
} else {
return $text;
}
}
}