Skip to content

Instantly share code, notes, and snippets.

@tushargugnani
Last active September 4, 2023 00:30
Show Gist options
  • Save tushargugnani/cead50b1f0cacb2962fee6456e905ebf to your computer and use it in GitHub Desktop.
Save tushargugnani/cead50b1f0cacb2962fee6456e905ebf to your computer and use it in GitHub Desktop.

Revisions

  1. tushargugnani renamed this gist Oct 3, 2022. 1 changed file with 0 additions and 0 deletions.
    File renamed without changes.
  2. tushargugnani created this gist Oct 3, 2022.
    306 changes: 306 additions & 0 deletions gistfile1.txt
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,306 @@
    <?php

    namespace App\Helper;

    trait WpTrait
    {


    /**
    * Replaces double line-breaks with paragraph elements.
    *
    * A group of regex replaces used to identify text formatted with newlines and
    * replace double line-breaks with HTML paragraph tags. The remaining line-breaks
    * after conversion become <<br />> tags, unless $br is set to '0' or 'false'.
    *
    * @since 0.71
    *
    * @param string $pee The text which has to be formatted.
    * @param bool $br Optional. If set, this will convert all remaining line-breaks
    * after paragraphing. Default true.
    * @return string Text which has been converted into correct paragraph tags.
    */
    public function wpautop($pee, $br = true)
    {
    $pre_tags = array();

    if (trim($pee) === '') {
    return '';
    }

    // Just to make things a little easier, pad the end.
    $pee = $pee . "\n";

    /*
    * Pre tags shouldn't be touched by autop.
    * Replace pre tags with placeholders and bring them back after autop.
    */
    if (strpos($pee, '<pre') !== false) {
    $pee_parts = explode('</pre>', $pee);
    $last_pee = array_pop($pee_parts);
    $pee = '';
    $i = 0;

    foreach ($pee_parts as $pee_part) {
    $start = strpos($pee_part, '<pre');

    // Malformed html?
    if ($start === false) {
    $pee .= $pee_part;
    continue;
    }

    $name = "<pre wp-pre-tag-$i></pre>";
    $pre_tags[$name] = substr($pee_part, $start) . '</pre>';

    $pee .= substr($pee_part, 0, $start) . $name;
    $i++;
    }

    $pee .= $last_pee;
    }
    // Change multiple <br>s into two line breaks, which will turn into paragraphs.
    $pee = preg_replace('|<br\s*/?>\s*<br\s*/?>|', "\n\n", $pee);

    $allblocks = '(?:table|thead|tfoot|caption|col|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|form|map|area|blockquote|address|math|style|p|h[1-6]|hr|fieldset|legend|section|article|aside|hgroup|header|footer|nav|figure|figcaption|details|menu|summary)';

    // Add a double line break above block-level opening tags.
    $pee = preg_replace('!(<' . $allblocks . '[\s/>])!', "\n\n$1", $pee);

    // Add a double line break below block-level closing tags.
    $pee = preg_replace('!(</' . $allblocks . '>)!', "$1\n\n", $pee);

    // Standardize newline characters to "\n".
    $pee = str_replace(array("\r\n", "\r"), "\n", $pee);

    // Find newlines in all elements and add placeholders.
    $pee = $this->wp_replace_in_html_tags($pee, array("\n" => ' <!-- wpnl --> '));

    // Collapse line breaks before and after <option> elements so they don't get autop'd.
    if (strpos($pee, '<option') !== false) {
    $pee = preg_replace('|\s*<option|', '<option', $pee);
    $pee = preg_replace('|</option>\s*|', '</option>', $pee);
    }

    /*
    * Collapse line breaks inside <object> elements, before <param> and <embed> elements
    * so they don't get autop'd.
    */
    if (strpos($pee, '</object>') !== false) {
    $pee = preg_replace('|(<object[^>]*>)\s*|', '$1', $pee);
    $pee = preg_replace('|\s*</object>|', '</object>', $pee);
    $pee = preg_replace('%\s*(</?(?:param|embed)[^>]*>)\s*%', '$1', $pee);
    }

    /*
    * Collapse line breaks inside <audio> and <video> elements,
    * before and after <source> and <track> elements.
    */
    if (strpos($pee, '<source') !== false || strpos($pee, '<track') !== false) {
    $pee = preg_replace('%([<\[](?:audio|video)[^>\]]*[>\]])\s*%', '$1', $pee);
    $pee = preg_replace('%\s*([<\[]/(?:audio|video)[>\]])%', '$1', $pee);
    $pee = preg_replace('%\s*(<(?:source|track)[^>]*>)\s*%', '$1', $pee);
    }

    // Collapse line breaks before and after <figcaption> elements.
    if (strpos($pee, '<figcaption') !== false) {
    $pee = preg_replace('|\s*(<figcaption[^>]*>)|', '$1', $pee);
    $pee = preg_replace('|</figcaption>\s*|', '</figcaption>', $pee);
    }

    // Remove more than two contiguous line breaks.
    $pee = preg_replace("/\n\n+/", "\n\n", $pee);

    // Split up the contents into an array of strings, separated by double line breaks.
    $pees = preg_split('/\n\s*\n/', $pee, -1, PREG_SPLIT_NO_EMPTY);

    // Reset $pee prior to rebuilding.
    $pee = '';

    // Rebuild the content as a string, wrapping every bit with a <p>.
    foreach ($pees as $tinkle) {
    $pee .= '<p>' . trim($tinkle, "\n") . "</p>\n";
    }

    // Under certain strange conditions it could create a P of entirely whitespace.
    $pee = preg_replace('|<p>\s*</p>|', '', $pee);

    // Add a closing <p> inside <div>, <address>, or <form> tag if missing.
    $pee = preg_replace('!<p>([^<]+)</(div|address|form)>!', '<p>$1</p></$2>', $pee);

    // If an opening or closing block element tag is wrapped in a <p>, unwrap it.
    $pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)\s*</p>!', '$1', $pee);

    // In some cases <li> may get wrapped in <p>, fix them.
    $pee = preg_replace('|<p>(<li.+?)</p>|', '$1', $pee);

    // If a <blockquote> is wrapped with a <p>, move it inside the <blockquote>.
    $pee = preg_replace('|<p><blockquote([^>]*)>|i', '<blockquote$1><p>', $pee);
    $pee = str_replace('</blockquote></p>', '</p></blockquote>', $pee);

    // If an opening or closing block element tag is preceded by an opening <p> tag, remove it.
    $pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)!', '$1', $pee);

    // If an opening or closing block element tag is followed by a closing <p> tag, remove it.
    $pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*</p>!', '$1', $pee);

    // Optionally insert line breaks.
    if ($br) {
    // Replace newlines that shouldn't be touched with a placeholder.
    $pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', [$this, '_autop_newline_preservation_helper'], $pee);

    // Normalize <br>
    $pee = str_replace(array('<br>', '<br/>'), '<br />', $pee);

    // Replace any new line characters that aren't preceded by a <br /> with a <br />.
    $pee = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $pee);

    // Replace newline placeholders with newlines.
    $pee = str_replace('<WPPreserveNewline />', "\n", $pee);
    }

    // If a <br /> tag is after an opening or closing block tag, remove it.
    $pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*<br />!', '$1', $pee);

    // If a <br /> tag is before a subset of opening or closing block tags, remove it.
    $pee = preg_replace('!<br />(\s*</?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)!', '$1', $pee);
    $pee = preg_replace("|\n</p>$|", '</p>', $pee);

    // Replace placeholder <pre> tags with their original content.
    if (!empty($pre_tags)) {
    $pee = str_replace(array_keys($pre_tags), array_values($pre_tags), $pee);
    }

    // Restore newlines in all elements.
    if (false !== strpos($pee, '<!-- wpnl -->')) {
    $pee = str_replace(array(' <!-- wpnl --> ', '<!-- wpnl -->'), "\n", $pee);
    }

    return $pee;
    }

    /**
    * Replace characters or phrases within HTML elements only.
    *
    * @since 4.2.3
    *
    * @param string $haystack The text which has to be formatted.
    * @param array $replace_pairs In the form array('from' => 'to', ...).
    * @return string The formatted text.
    */
    private function wp_replace_in_html_tags($haystack, $replace_pairs)
    {
    // Find all elements.
    $textarr = $this->wp_html_split($haystack);
    $changed = false;

    // Optimize when searching for one item.
    if (1 === count($replace_pairs)) {
    // Extract $needle and $replace.
    foreach ($replace_pairs as $needle => $replace) {
    }

    // Loop through delimiters (elements) only.
    for ($i = 1, $c = count($textarr); $i < $c; $i += 2) {
    if (false !== strpos($textarr[$i], $needle)) {
    $textarr[$i] = str_replace($needle, $replace, $textarr[$i]);
    $changed = true;
    }
    }
    } else {
    // Extract all $needles.
    $needles = array_keys($replace_pairs);

    // Loop through delimiters (elements) only.
    for ($i = 1, $c = count($textarr); $i < $c; $i += 2) {
    foreach ($needles as $needle) {
    if (false !== strpos($textarr[$i], $needle)) {
    $textarr[$i] = strtr($textarr[$i], $replace_pairs);
    $changed = true;
    // After one strtr() break out of the foreach loop and look at next element.
    break;
    }
    }
    }
    }

    if ($changed) {
    $haystack = implode($textarr);
    }

    return $haystack;
    }

    /**
    * Separate HTML elements and comments from the text.
    *
    * @since 4.2.4
    *
    * @param string $input The text which has to be formatted.
    * @return array The formatted text.
    */
    private function wp_html_split($input)
    {
    return preg_split($this->get_html_split_regex(), $input, -1, PREG_SPLIT_DELIM_CAPTURE);
    }

    /**
    * Retrieve the regular expression for an HTML element.
    *
    * @since 4.4.0
    *
    * @staticvar string $regex
    *
    * @return string The regular expression
    */
    private function get_html_split_regex()
    {
    static $regex;

    if (!isset($regex)) {
    // phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound -- don't remove regex indentation
    $comments =
    '!' // Start of comment, after the <.
    . '(?:' // Unroll the loop: Consume everything until --> is found.
    . '-(?!->)' // Dash not followed by end of comment.
    . '[^\-]*+' // Consume non-dashes.
    . ')*+' // Loop possessively.
    . '(?:-->)?'; // End of comment. If not found, match all input.

    $cdata =
    '!\[CDATA\[' // Start of comment, after the <.
    . '[^\]]*+' // Consume non-].
    . '(?:' // Unroll the loop: Consume everything until ]]> is found.
    . '](?!]>)' // One ] not followed by end of comment.
    . '[^\]]*+' // Consume non-].
    . ')*+' // Loop possessively.
    . '(?:]]>)?'; // End of comment. If not found, match all input.

    $escaped =
    '(?=' // Is the element escaped?
    . '!--'
    . '|'
    . '!\[CDATA\['
    . ')'
    . '(?(?=!-)' // If yes, which type?
    . $comments
    . '|'
    . $cdata
    . ')';

    $regex =
    '/(' // Capture the entire match.
    . '<' // Find start of element.
    . '(?' // Conditional expression follows.
    . $escaped // Find end of escaped element.
    . '|' // ... else ...
    . '[^>]*>?' // Find end of normal element.
    . ')'
    . ')/';
    // phpcs:enable
    }

    return $regex;
    }

    }