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/wp-includes/js/dist/ -> autop.js (source)

   1  this["wp"] = this["wp"] || {}; this["wp"]["autop"] =
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  79  /******/
  80  /******/     // __webpack_public_path__
  81  /******/     __webpack_require__.p = "";
  82  /******/
  83  /******/
  84  /******/     // Load entry module and return exports
  85  /******/     return __webpack_require__(__webpack_require__.s = "zbAn");
  86  /******/ })
  87  /************************************************************************/
  88  /******/ ({
  89  
  90  /***/ "zbAn":
  91  /***/ (function(module, __webpack_exports__, __webpack_require__) {
  92  
  93  "use strict";
  94  __webpack_require__.r(__webpack_exports__);
  95  /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "autop", function() { return autop; });
  96  /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "removep", function() { return removep; });
  97  /**
  98   * The regular expression for an HTML element.
  99   *
 100   * @type {RegExp}
 101   */
 102  const htmlSplitRegex = (() => {
 103    /* eslint-disable no-multi-spaces */
 104    const comments = '!' + // Start of comment, after the <.
 105    '(?:' + // Unroll the loop: Consume everything until --> is found.
 106    '-(?!->)' + // Dash not followed by end of comment.
 107    '[^\\-]*' + // Consume non-dashes.
 108    ')*' + // Loop possessively.
 109    '(?:-->)?'; // End of comment. If not found, match all input.
 110  
 111    const cdata = '!\\[CDATA\\[' + // Start of comment, after the <.
 112    '[^\\]]*' + // Consume non-].
 113    '(?:' + // Unroll the loop: Consume everything until ]]> is found.
 114    '](?!]>)' + // One ] not followed by end of comment.
 115    '[^\\]]*' + // Consume non-].
 116    ')*?' + // Loop possessively.
 117    '(?:]]>)?'; // End of comment. If not found, match all input.
 118  
 119    const escaped = '(?=' + // Is the element escaped?
 120    '!--' + '|' + '!\\[CDATA\\[' + ')' + '((?=!-)' + // If yes, which type?
 121    comments + '|' + cdata + ')';
 122    const regex = '(' + // Capture the entire match.
 123    '<' + // Find start of element.
 124    '(' + // Conditional expression follows.
 125    escaped + // Find end of escaped element.
 126    '|' + // ... else ...
 127    '[^>]*>?' + // Find end of normal element.
 128    ')' + ')';
 129    return new RegExp(regex);
 130    /* eslint-enable no-multi-spaces */
 131  })();
 132  /**
 133   * Separate HTML elements and comments from the text.
 134   *
 135   * @param  {string} input The text which has to be formatted.
 136   * @return {string[]}        The formatted text.
 137   */
 138  
 139  
 140  function htmlSplit(input) {
 141    const parts = [];
 142    let workingInput = input;
 143    let match;
 144  
 145    while (match = workingInput.match(htmlSplitRegex)) {
 146      // The `match` result, when invoked on a RegExp with the `g` flag (`/foo/g`) will not include `index`.
 147      // If the `g` flag is omitted, `index` is included.
 148      // `htmlSplitRegex` does not have the `g` flag so we can assert it will have an index number.
 149      // Assert `match.index` is a number.
 150      const index =
 151      /** @type {number} */
 152      match.index;
 153      parts.push(workingInput.slice(0, index));
 154      parts.push(match[0]);
 155      workingInput = workingInput.slice(index + match[0].length);
 156    }
 157  
 158    if (workingInput.length) {
 159      parts.push(workingInput);
 160    }
 161  
 162    return parts;
 163  }
 164  /**
 165   * Replace characters or phrases within HTML elements only.
 166   *
 167   * @param  {string}                haystack     The text which has to be formatted.
 168   * @param  {Record<string,string>} replacePairs In the form {from: 'to', …}.
 169   * @return {string}                             The formatted text.
 170   */
 171  
 172  
 173  function replaceInHtmlTags(haystack, replacePairs) {
 174    // Find all elements.
 175    const textArr = htmlSplit(haystack);
 176    let changed = false; // Extract all needles.
 177  
 178    const needles = Object.keys(replacePairs); // Loop through delimiters (elements) only.
 179  
 180    for (let i = 1; i < textArr.length; i += 2) {
 181      for (let j = 0; j < needles.length; j++) {
 182        const needle = needles[j];
 183  
 184        if (-1 !== textArr[i].indexOf(needle)) {
 185          textArr[i] = textArr[i].replace(new RegExp(needle, 'g'), replacePairs[needle]);
 186          changed = true; // After one strtr() break out of the foreach loop and look at next element.
 187  
 188          break;
 189        }
 190      }
 191    }
 192  
 193    if (changed) {
 194      haystack = textArr.join('');
 195    }
 196  
 197    return haystack;
 198  }
 199  /**
 200   * Replaces double line-breaks with paragraph elements.
 201   *
 202   * A group of regex replaces used to identify text formatted with newlines and
 203   * replace double line-breaks with HTML paragraph tags. The remaining line-
 204   * breaks after conversion become `<br />` tags, unless br is set to 'false'.
 205   *
 206   * @param  {string}    text The text which has to be formatted.
 207   * @param  {boolean}   br   Optional. If set, will convert all remaining line-
 208   *                          breaks after paragraphing. Default true.
 209   *
 210   * @example
 211   *```js
 212   * import { autop } from '@wordpress/autop';
 213   * autop( 'my text' ); // "<p>my text</p>"
 214   * ```
 215   *
 216   * @return {string}         Text which has been converted into paragraph tags.
 217   */
 218  
 219  
 220  function autop(text, br = true) {
 221    const preTags = [];
 222  
 223    if (text.trim() === '') {
 224      return '';
 225    } // Just to make things a little easier, pad the end.
 226  
 227  
 228    text = text + '\n';
 229    /*
 230     * Pre tags shouldn't be touched by autop.
 231     * Replace pre tags with placeholders and bring them back after autop.
 232     */
 233  
 234    if (text.indexOf('<pre') !== -1) {
 235      const textParts = text.split('</pre>');
 236      const lastText = textParts.pop();
 237      text = '';
 238  
 239      for (let i = 0; i < textParts.length; i++) {
 240        const textPart = textParts[i];
 241        const start = textPart.indexOf('<pre'); // Malformed html?
 242  
 243        if (start === -1) {
 244          text += textPart;
 245          continue;
 246        }
 247  
 248        const name = '<pre wp-pre-tag-' + i + '></pre>';
 249        preTags.push([name, textPart.substr(start) + '</pre>']);
 250        text += textPart.substr(0, start) + name;
 251      }
 252  
 253      text += lastText;
 254    } // Change multiple <br>s into two line breaks, which will turn into paragraphs.
 255  
 256  
 257    text = text.replace(/<br\s*\/?>\s*<br\s*\/?>/g, '\n\n');
 258    const 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.
 259  
 260    text = text.replace(new RegExp('(<' + allBlocks + '[\\s/>])', 'g'), '\n\n$1'); // Add a double line break below block-level closing tags.
 261  
 262    text = text.replace(new RegExp('(</' + allBlocks + '>)', 'g'), '$1\n\n'); // Standardize newline characters to "\n".
 263  
 264    text = text.replace(/\r\n|\r/g, '\n'); // Find newlines in all elements and add placeholders.
 265  
 266    text = replaceInHtmlTags(text, {
 267      '\n': ' <!-- wpnl --> '
 268    }); // Collapse line breaks before and after <option> elements so they don't get autop'd.
 269  
 270    if (text.indexOf('<option') !== -1) {
 271      text = text.replace(/\s*<option/g, '<option');
 272      text = text.replace(/<\/option>\s*/g, '</option>');
 273    }
 274    /*
 275     * Collapse line breaks inside <object> elements, before <param> and <embed> elements
 276     * so they don't get autop'd.
 277     */
 278  
 279  
 280    if (text.indexOf('</object>') !== -1) {
 281      text = text.replace(/(<object[^>]*>)\s*/g, '$1');
 282      text = text.replace(/\s*<\/object>/g, '</object>');
 283      text = text.replace(/\s*(<\/?(?:param|embed)[^>]*>)\s*/g, '$1');
 284    }
 285    /*
 286     * Collapse line breaks inside <audio> and <video> elements,
 287     * before and after <source> and <track> elements.
 288     */
 289  
 290  
 291    if (text.indexOf('<source') !== -1 || text.indexOf('<track') !== -1) {
 292      text = text.replace(/([<\[](?:audio|video)[^>\]]*[>\]])\s*/g, '$1');
 293      text = text.replace(/\s*([<\[]\/(?:audio|video)[>\]])/g, '$1');
 294      text = text.replace(/\s*(<(?:source|track)[^>]*>)\s*/g, '$1');
 295    } // Collapse line breaks before and after <figcaption> elements.
 296  
 297  
 298    if (text.indexOf('<figcaption') !== -1) {
 299      text = text.replace(/\s*(<figcaption[^>]*>)/, '$1');
 300      text = text.replace(/<\/figcaption>\s*/, '</figcaption>');
 301    } // Remove more than two contiguous line breaks.
 302  
 303  
 304    text = text.replace(/\n\n+/g, '\n\n'); // Split up the contents into an array of strings, separated by double line breaks.
 305  
 306    const texts = text.split(/\n\s*\n/).filter(Boolean); // Reset text prior to rebuilding.
 307  
 308    text = ''; // Rebuild the content as a string, wrapping every bit with a <p>.
 309  
 310    texts.forEach(textPiece => {
 311      text += '<p>' + textPiece.replace(/^\n*|\n*$/g, '') + '</p>\n';
 312    }); // Under certain strange conditions it could create a P of entirely whitespace.
 313  
 314    text = text.replace(/<p>\s*<\/p>/g, ''); // Add a closing <p> inside <div>, <address>, or <form> tag if missing.
 315  
 316    text = text.replace(/<p>([^<]+)<\/(div|address|form)>/g, '<p>$1</p></$2>'); // If an opening or closing block element tag is wrapped in a <p>, unwrap it.
 317  
 318    text = text.replace(new RegExp('<p>\\s*(</?' + allBlocks + '[^>]*>)\\s*</p>', 'g'), '$1'); // In some cases <li> may get wrapped in <p>, fix them.
 319  
 320    text = text.replace(/<p>(<li.+?)<\/p>/g, '$1'); // If a <blockquote> is wrapped with a <p>, move it inside the <blockquote>.
 321  
 322    text = text.replace(/<p><blockquote([^>]*)>/gi, '<blockquote$1><p>');
 323    text = text.replace(/<\/blockquote><\/p>/g, '</p></blockquote>'); // If an opening or closing block element tag is preceded by an opening <p> tag, remove it.
 324  
 325    text = text.replace(new RegExp('<p>\\s*(</?' + allBlocks + '[^>]*>)', 'g'), '$1'); // If an opening or closing block element tag is followed by a closing <p> tag, remove it.
 326  
 327    text = text.replace(new RegExp('(</?' + allBlocks + '[^>]*>)\\s*</p>', 'g'), '$1'); // Optionally insert line breaks.
 328  
 329    if (br) {
 330      // Replace newlines that shouldn't be touched with a placeholder.
 331      text = text.replace(/<(script|style).*?<\/\\1>/g, match => match[0].replace(/\n/g, '<WPPreserveNewline />')); // Normalize <br>
 332  
 333      text = text.replace(/<br>|<br\/>/g, '<br />'); // Replace any new line characters that aren't preceded by a <br /> with a <br />.
 334  
 335      text = text.replace(/(<br \/>)?\s*\n/g, (a, b) => b ? a : '<br />\n'); // Replace newline placeholders with newlines.
 336  
 337      text = text.replace(/<WPPreserveNewline \/>/g, '\n');
 338    } // If a <br /> tag is after an opening or closing block tag, remove it.
 339  
 340  
 341    text = text.replace(new RegExp('(</?' + allBlocks + '[^>]*>)\\s*<br />', 'g'), '$1'); // If a <br /> tag is before a subset of opening or closing block tags, remove it.
 342  
 343    text = text.replace(/<br \/>(\s*<\/?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)/g, '$1');
 344    text = text.replace(/\n<\/p>$/g, '</p>'); // Replace placeholder <pre> tags with their original content.
 345  
 346    preTags.forEach(preTag => {
 347      const [name, original] = preTag;
 348      text = text.replace(name, original);
 349    }); // Restore newlines in all elements.
 350  
 351    if (-1 !== text.indexOf('<!-- wpnl -->')) {
 352      text = text.replace(/\s?<!-- wpnl -->\s?/g, '\n');
 353    }
 354  
 355    return text;
 356  }
 357  /**
 358   * Replaces `<p>` tags with two line breaks. "Opposite" of autop().
 359   *
 360   * Replaces `<p>` tags with two line breaks except where the `<p>` has attributes.
 361   * Unifies whitespace. Indents `<li>`, `<dt>` and `<dd>` for better readability.
 362   *
 363   * @param  {string} html The content from the editor.
 364   *
 365   * @example
 366   * ```js
 367   * import { removep } from '@wordpress/autop';
 368   * removep( '<p>my text</p>' ); // "my text"
 369   * ```
 370   *
 371   * @return {string}      The content with stripped paragraph tags.
 372   */
 373  
 374  function removep(html) {
 375    const blocklist = 'blockquote|ul|ol|li|dl|dt|dd|table|thead|tbody|tfoot|tr|th|td|h[1-6]|fieldset|figure';
 376    const blocklist1 = blocklist + '|div|p';
 377    const blocklist2 = blocklist + '|pre';
 378    /** @type {string[]} */
 379  
 380    const preserve = [];
 381    let preserveLinebreaks = false;
 382    let preserveBr = false;
 383  
 384    if (!html) {
 385      return '';
 386    } // Protect script and style tags.
 387  
 388  
 389    if (html.indexOf('<script') !== -1 || html.indexOf('<style') !== -1) {
 390      html = html.replace(/<(script|style)[^>]*>[\s\S]*?<\/\1>/g, match => {
 391        preserve.push(match);
 392        return '<wp-preserve>';
 393      });
 394    } // Protect pre tags.
 395  
 396  
 397    if (html.indexOf('<pre') !== -1) {
 398      preserveLinebreaks = true;
 399      html = html.replace(/<pre[^>]*>[\s\S]+?<\/pre>/g, a => {
 400        a = a.replace(/<br ?\/?>(\r\n|\n)?/g, '<wp-line-break>');
 401        a = a.replace(/<\/?p( [^>]*)?>(\r\n|\n)?/g, '<wp-line-break>');
 402        return a.replace(/\r?\n/g, '<wp-line-break>');
 403      });
 404    } // Remove line breaks but keep <br> tags inside image captions.
 405  
 406  
 407    if (html.indexOf('[caption') !== -1) {
 408      preserveBr = true;
 409      html = html.replace(/\[caption[\s\S]+?\[\/caption\]/g, a => {
 410        return a.replace(/<br([^>]*)>/g, '<wp-temp-br$1>').replace(/[\r\n\t]+/, '');
 411      });
 412    } // Normalize white space characters before and after block tags.
 413  
 414  
 415    html = html.replace(new RegExp('\\s*</(' + blocklist1 + ')>\\s*', 'g'), '</$1>\n');
 416    html = html.replace(new RegExp('\\s*<((?:' + blocklist1 + ')(?: [^>]*)?)>', 'g'), '\n<$1>'); // Mark </p> if it has any attributes.
 417  
 418    html = html.replace(/(<p [^>]+>[\s\S]*?)<\/p>/g, '$1</p#>'); // Preserve the first <p> inside a <div>.
 419  
 420    html = html.replace(/<div( [^>]*)?>\s*<p>/gi, '<div$1>\n\n'); // Remove paragraph tags.
 421  
 422    html = html.replace(/\s*<p>/gi, '');
 423    html = html.replace(/\s*<\/p>\s*/gi, '\n\n'); // Normalize white space chars and remove multiple line breaks.
 424  
 425    html = html.replace(/\n[\s\u00a0]+\n/g, '\n\n'); // Replace <br> tags with line breaks.
 426  
 427    html = html.replace(/(\s*)<br ?\/?>\s*/gi, (_, space) => {
 428      if (space && space.indexOf('\n') !== -1) {
 429        return '\n\n';
 430      }
 431  
 432      return '\n';
 433    }); // Fix line breaks around <div>.
 434  
 435    html = html.replace(/\s*<div/g, '\n<div');
 436    html = html.replace(/<\/div>\s*/g, '</div>\n'); // Fix line breaks around caption shortcodes.
 437  
 438    html = html.replace(/\s*\[caption([^\[]+)\[\/caption\]\s*/gi, '\n\n[caption$1[/caption]\n\n');
 439    html = html.replace(/caption\]\n\n+\[caption/g, 'caption]\n\n[caption'); // Pad block elements tags with a line break.
 440  
 441    html = html.replace(new RegExp('\\s*<((?:' + blocklist2 + ')(?: [^>]*)?)\\s*>', 'g'), '\n<$1>');
 442    html = html.replace(new RegExp('\\s*</(' + blocklist2 + ')>\\s*', 'g'), '</$1>\n'); // Indent <li>, <dt> and <dd> tags.
 443  
 444    html = html.replace(/<((li|dt|dd)[^>]*)>/g, ' \t<$1>'); // Fix line breaks around <select> and <option>.
 445  
 446    if (html.indexOf('<option') !== -1) {
 447      html = html.replace(/\s*<option/g, '\n<option');
 448      html = html.replace(/\s*<\/select>/g, '\n</select>');
 449    } // Pad <hr> with two line breaks.
 450  
 451  
 452    if (html.indexOf('<hr') !== -1) {
 453      html = html.replace(/\s*<hr( [^>]*)?>\s*/g, '\n\n<hr$1>\n\n');
 454    } // Remove line breaks in <object> tags.
 455  
 456  
 457    if (html.indexOf('<object') !== -1) {
 458      html = html.replace(/<object[\s\S]+?<\/object>/g, a => {
 459        return a.replace(/[\r\n]+/g, '');
 460      });
 461    } // Unmark special paragraph closing tags.
 462  
 463  
 464    html = html.replace(/<\/p#>/g, '</p>\n'); // Pad remaining <p> tags whit a line break.
 465  
 466    html = html.replace(/\s*(<p [^>]+>[\s\S]*?<\/p>)/g, '\n$1'); // Trim.
 467  
 468    html = html.replace(/^\s+/, '');
 469    html = html.replace(/[\s\u00a0]+$/, '');
 470  
 471    if (preserveLinebreaks) {
 472      html = html.replace(/<wp-line-break>/g, '\n');
 473    }
 474  
 475    if (preserveBr) {
 476      html = html.replace(/<wp-temp-br([^>]*)>/g, '<br$1>');
 477    } // Restore preserved tags.
 478  
 479  
 480    if (preserve.length) {
 481      html = html.replace(/<wp-preserve>/g, () => {
 482        return (
 483          /** @type {string} */
 484          preserve.shift()
 485        );
 486      });
 487    }
 488  
 489    return html;
 490  }
 491  
 492  
 493  /***/ })
 494  
 495  /******/ });


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