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Edit File: Renderer.js

import { defaults } from './defaults.js';
import {
  cleanUrl,
  escape
} from './helpers.js';

/**
 * Renderer
 */
export class Renderer {
  constructor(options) {
    this.options = options || defaults;
  }

code(code, infostring, escaped) {
    const lang = (infostring || '').match(/\S*/)[0];
    if (this.options.highlight) {
      const out = this.options.highlight(code, lang);
      if (out != null && out !== code) {
        escaped = true;
        code = out;
      }
    }

code = code.replace(/\n$/, '') + '\n';

if (!lang) {
      return '<pre><code>'
        + (escaped ? code : escape(code, true))
        + '</code></pre>\n';
    }

return '<pre><code class="'
      + this.options.langPrefix
      + escape(lang, true)
      + '">'
      + (escaped ? code : escape(code, true))
      + '</code></pre>\n';
  }

/**
   * @param {string} quote
   */
  blockquote(quote) {
    return `<blockquote>\n${quote}</blockquote>\n`;
  }

html(html) {
    return html;
  }

/**
   * @param {string} text
   * @param {string} level
   * @param {string} raw
   * @param {any} slugger
   */
  heading(text, level, raw, slugger) {
    if (this.options.headerIds) {
      const id = this.options.headerPrefix + slugger.slug(raw);
      return `<h${level} id="${id}">${text}</h${level}>\n`;
    }

// ignore IDs
    return `<h${level}>${text}</h${level}>\n`;
  }

hr() {
    return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
  }

list(body, ordered, start) {
    const type = ordered ? 'ol' : 'ul',
      startatt = (ordered && start !== 1) ? (' start="' + start + '"') : '';
    return '<' + type + startatt + '>\n' + body + '</' + type + '>\n';
  }

/**
   * @param {string} text
   */
  listitem(text) {
    return `<li>${text}</li>\n`;
  }

checkbox(checked) {
    return '<input '
      + (checked ? 'checked="" ' : '')
      + 'disabled="" type="checkbox"'
      + (this.options.xhtml ? ' /' : '')
      + '> ';
  }

/**
   * @param {string} text
   */
  paragraph(text) {
    return `<p>${text}</p>\n`;
  }

/**
   * @param {string} header
   * @param {string} body
   */
  table(header, body) {
    if (body) body = `<tbody>${body}</tbody>`;

return '<table>\n'
      + '<thead>\n'
      + header
      + '</thead>\n'
      + body
      + '</table>\n';
  }

/**
   * @param {string} content
   */
  tablerow(content) {
    return `<tr>\n${content}</tr>\n`;
  }

tablecell(content, flags) {
    const type = flags.header ? 'th' : 'td';
    const tag = flags.align
      ? `<${type} align="${flags.align}">`
      : `<${type}>`;
    return tag + content + `</${type}>\n`;
  }

/**
   * span level renderer
   * @param {string} text
   */
  strong(text) {
    return `<strong>${text}</strong>`;
  }

/**
   * @param {string} text
   */
  em(text) {
    return `<em>${text}</em>`;
  }

/**
   * @param {string} text
   */
  codespan(text) {
    return `<code>${text}</code>`;
  }

br() {
    return this.options.xhtml ? '<br/>' : '<br>';
  }

/**
   * @param {string} text
   */
  del(text) {
    return `<del>${text}</del>`;
  }

/**
   * @param {string} href
   * @param {string} title
   * @param {string} text
   */
  link(href, title, text) {
    href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);
    if (href === null) {
      return text;
    }
    let out = '<a href="' + escape(href) + '"';
    if (title) {
      out += ' title="' + title + '"';
    }
    out += '>' + text + '</a>';
    return out;
  }

/**
   * @param {string} href
   * @param {string} title
   * @param {string} text
   */
  image(href, title, text) {
    href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);
    if (href === null) {
      return text;
    }

let out = `<img src="${href}" alt="${text}"`;
    if (title) {
      out += ` title="${title}"`;
    }
    out += this.options.xhtml ? '/>' : '>';
    return out;
  }

text(text) {
    return text;
  }
}

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