syntax highlighting colors

/* **********************************************
     Begin prism-core.js
********************************************** */

var _self =
  typeof window !== "undefined"
    ? window // if in browser
    : typeof WorkerGlobalScope !== "undefined" && self instanceof WorkerGlobalScope
      ? self // if in worker
      : {}; // if in node js

/**
 * Prism: Lightweight, robust, elegant syntax highlighting
 * MIT license http://www.opensource.org/licenses/mit-license.php/
 * @author Lea Verou http://lea.verou.me
 */

var Prism = (function () {
  // Private helper vars
  var lang = /\blang(?:uage)?-(\w+)\b/i;
  var uniqueId = 0;

  var _ = (_self.Prism = {
    manual: _self.Prism && _self.Prism.manual,
    util: {
      encode: function (tokens) {
        if (tokens instanceof Token) {
          return new Token(tokens.type, _.util.encode(tokens.content), tokens.alias);
        } else if (_.util.type(tokens) === "Array") {
          return tokens.map(_.util.encode);
        } else {
          return tokens
            .replace(/&/g, "&")
            .replace(/</g, "&lt;")
            .replace(/\u00a0/g, " ");
        }
      },

      type: function (o) {
        return Object.prototype.toString.call(o).match(/\[object (\w+)\]/)[1];
      },

      objId: function (obj) {
        if (!obj["__id"]) {
          Object.defineProperty(obj, "__id", { value: ++uniqueId });
        }
        return obj["__id"];
      },

      // Deep clone a language definition (e.g. to extend it)
      clone: function (o) {
        var type = _.util.type(o);

        switch (type) {
          case "Object":
            var clone = {};

            for (var key in o) {
              if (o.hasOwnProperty(key)) {
                clone[key] = _.util.clone(o[key]);
              }
            }

            return clone;

          case "Array":
            // Check for existence for IE8
            return (
              o.map &&
              o.map(function (v) {
                return _.util.clone(v);
              })
            );
        }

        return o;
      },
    },

    languages: {
      extend: function (id, redef) {
        var lang = _.util.clone(_.languages[id]);

        for (var key in redef) {
          lang[key] = redef[key];
        }

        return lang;
      },

      /**
       * Insert a token before another token in a language literal
       * As this needs to recreate the object (we cannot actually insert before keys in object literals),
       * we cannot just provide an object, we need anobject and a key.
       * @param inside The key (or language id) of the parent
       * @param before The key to insert before. If not provided, the function appends instead.
       * @param insert Object with the key/value pairs to insert
       * @param root The object that contains `inside`. If equal to Prism.languages, it can be omitted.
       */
      insertBefore: function (inside, before, insert, root) {
        root = root || _.languages;
        var grammar = root[inside];

        if (arguments.length == 2) {
          insert = arguments[1];

          for (var newToken in insert) {
            if (insert.hasOwnProperty(newToken)) {
              grammar[newToken] = insert[newToken];
            }
          }

          return grammar;
        }

        var ret = {};

        for (var token in grammar) {
          if (grammar.hasOwnProperty(token)) {
            if (token == before) {
              for (var newToken in insert) {
                if (insert.hasOwnProperty(newToken)) {
                  ret[newToken] = insert[newToken];
                }
              }
            }

            ret[token] = grammar[token];
          }
        }

        // Update references in other language definitions
        _.languages.DFS(_.languages, function (key, value) {
          if (value === root[inside] && key != inside) {
            this[key] = ret;
          }
        });

        return (root[inside] = ret);
      },

      // Traverse a language definition with Depth First Search
      DFS: function (o, callback, type, visited) {
        visited = visited || {};
        for (var i in o) {
          if (o.hasOwnProperty(i)) {
            callback.call(o, i, o[i], type || i);

            if (_.util.type(o[i]) === "Object" && !visited[_.util.objId(o[i])]) {
              visited[_.util.objId(o[i])] = true;
              _.languages.DFS(o[i], callback, null, visited);
            } else if (_.util.type(o[i]) === "Array" && !visited[_.util.objId(o[i])]) {
              visited[_.util.objId(o[i])] = true;
              _.languages.DFS(o[i], callback, i, visited);
            }
          }
        }
      },
    },
    plugins: {},

    highlightAll: function (async, callback) {
      var env = {
        callback: callback,
        selector:
          'code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code',
      };

      _.hooks.run("before-highlightall", env);

      var elements = env.elements || document.querySelectorAll(env.selector);

      for (var i = 0, element; (element = elements[i++]); ) {
        _.highlightElement(element, async === true, env.callback);
      }
    },

    highlightElement: function (element, async, callback) {
      // Find language
      var language,
        grammar,
        parent = element;

      while (parent && !lang.test(parent.className)) {
        parent = parent.parentNode;
      }

      if (parent) {
        language = (parent.className.match(lang) || [, ""])[1].toLowerCase();
        grammar = _.languages[language];
      }

      // Set language on the element, if not present
      element.className =
        element.className.replace(lang, "").replace(/\s+/g, " ") + " language-" + language;

      // Set language on the parent, for styling
      parent = element.parentNode;

      if (/pre/i.test(parent.nodeName)) {
        parent.className =
          parent.className.replace(lang, "").replace(/\s+/g, " ") + " language-" + language;
      }

      var code = element.textContent;

      var env = {
        element: element,
        language: language,
        grammar: grammar,
        code: code,
      };

      _.hooks.run("before-sanity-check", env);

      if (!env.code || !env.grammar) {
        if (env.code) {
          env.element.textContent = env.code;
        }
        _.hooks.run("complete", env);
        return;
      }

      _.hooks.run("before-highlight", env);

      if (async && _self.Worker) {
        var worker = new Worker(_.filename);

        worker.onmessage = function (evt) {
          env.highlightedCode = evt.data;

          _.hooks.run("before-insert", env);

          env.element.innerHTML = env.highlightedCode;

          callback && callback.call(env.element);
          _.hooks.run("after-highlight", env);
          _.hooks.run("complete", env);
        };

        worker.postMessage(
          JSON.stringify({
            language: env.language,
            code: env.code,
            immediateClose: true,
          }),
        );
      } else {
        env.highlightedCode = _.highlight(env.code, env.grammar, env.language);

        _.hooks.run("before-insert", env);

        env.element.innerHTML = env.highlightedCode;

        callback && callback.call(element);

        _.hooks.run("after-highlight", env);
        _.hooks.run("complete", env);
      }
    },

    highlight: function (text, grammar, language) {
      var tokens = _.tokenize(text, grammar);
      return Token.stringify(_.util.encode(tokens), language);
    },

    tokenize: function (text, grammar, language) {
      var Token = _.Token;

      var strarr = [text];

      var rest = grammar.rest;

      if (rest) {
        for (var token in rest) {
          grammar[token] = rest[token];
        }

        delete grammar.rest;
      }

      tokenloop: for (var token in grammar) {
        if (!grammar.hasOwnProperty(token) || !grammar[token]) {
          continue;
        }

        var patterns = grammar[token];
        patterns = _.util.type(patterns) === "Array" ? patterns : [patterns];

        for (var j = 0; j < patterns.length; ++j) {
          var pattern = patterns[j],
            inside = pattern.inside,
            lookbehind = !!pattern.lookbehind,
            greedy = !!pattern.greedy,
            lookbehindLength = 0,
            alias = pattern.alias;

          if (greedy && !pattern.pattern.global) {
            // Without the global flag, lastIndex won't work
            var flags = pattern.pattern.toString().match(/[imuy]*$/)[0];
            pattern.pattern = RegExp(pattern.pattern.source, flags + "g");
          }

          pattern = pattern.pattern || pattern;

          // Don’t cache length as it changes during the loop
          for (var i = 0, pos = 0; i < strarr.length; pos += strarr[i].length, ++i) {
            var str = strarr[i];

            if (strarr.length > text.length) {
              // Something went terribly wrong, ABORT, ABORT!
              break tokenloop;
            }

            if (str instanceof Token) {
              continue;
            }

            pattern.lastIndex = 0;

            var match = pattern.exec(str),
              delNum = 1;

            // Greedy patterns can override/remove up to two previously matched tokens
            if (!match && greedy && i != strarr.length - 1) {
              pattern.lastIndex = pos;
              match = pattern.exec(text);
              if (!match) {
                break;
              }

              var from = match.index + (lookbehind ? match[1].length : 0),
                to = match.index + match[0].length,
                k = i,
                p = pos;

              for (var len = strarr.length; k < len && p < to; ++k) {
                p += strarr[k].length;
                // Move the index i to the element in strarr that is closest to from
                if (from >= p) {
                  ++i;
                  pos = p;
                }
              }

              /*
               * If strarr[i] is a Token, then the match starts inside another Token, which is invalid
               * If strarr[k - 1] is greedy we are in conflict with another greedy pattern
               */
              if (strarr[i] instanceof Token || strarr[k - 1].greedy) {
                continue;
              }

              // Number of tokens to delete and replace with the new match
              delNum = k - i;
              str = text.slice(pos, p);
              match.index -= pos;
            }

            if (!match) {
              continue;
            }

            if (lookbehind) {
              lookbehindLength = match[1].length;
            }

            var from = match.index + lookbehindLength,
              match = match[0].slice(lookbehindLength),
              to = from + match.length,
              before = str.slice(0, from),
              after = str.slice(to);

            var args = [i, delNum];

            if (before) {
              args.push(before);
            }

            var wrapped = new Token(
              token,
              inside ? _.tokenize(match, inside) : match,
              alias,
              match,
              greedy,
            );

            args.push(wrapped);

            if (after) {
              args.push(after);
            }

            Array.prototype.splice.apply(strarr, args);
          }
        }
      }

      return strarr;
    },

    hooks: {
      all: {},

      add: function (name, callback) {
        var hooks = _.hooks.all;

        hooks[name] = hooks[name] || [];

        hooks[name].push(callback);
      },

      run: function (name, env) {
        var callbacks = _.hooks.all[name];

        if (!callbacks || !callbacks.length) {
          return;
        }

        for (var i = 0, callback; (callback = callbacks[i++]); ) {
          callback(env);
        }
      },
    },
  });

  var Token = (_.Token = function (type, content, alias, matchedStr, greedy) {
    this.type = type;
    this.content = content;
    this.alias = alias;
    // Copy of the full string this token was created from
    this.length = (matchedStr || "").length | 0;
    this.greedy = !!greedy;
  });

  Token.stringify = function (o, language, parent) {
    if (typeof o == "string") {
      return o;
    }

    if (_.util.type(o) === "Array") {
      return o
        .map(function (element) {
          return Token.stringify(element, language, o);
        })
        .join("");
    }

    var env = {
      type: o.type,
      content: Token.stringify(o.content, language, parent),
      tag: "span",
      classes: ["token", o.type],
      attributes: {},
      language: language,
      parent: parent,
    };

    if (env.type == "comment") {
      env.attributes["spellcheck"] = "true";
    }

    if (o.alias) {
      var aliases = _.util.type(o.alias) === "Array" ? o.alias : [o.alias];
      Array.prototype.push.apply(env.classes, aliases);
    }

    _.hooks.run("wrap", env);

    var attributes = Object.keys(env.attributes)
      .map(function (name) {
        return name + '="' + (env.attributes[name] || "").replace(/"/g, "&quot;") + '"';
      })
      .join(" ");

    return (
      "<" +
      env.tag +
      ' class="' +
      env.classes.join(" ") +
      '"' +
      (attributes ? " " + attributes : "") +
      ">" +
      env.content +
      "</" +
      env.tag +
      ">"
    );
  };

  if (!_self.document) {
    if (!_self.addEventListener) {
      // in Node.js
      return _self.Prism;
    }
    // In worker
    _self.addEventListener(
      "message",
      function (evt) {
        var message = JSON.parse(evt.data),
          lang = message.language,
          code = message.code,
          immediateClose = message.immediateClose;

        _self.postMessage(_.highlight(code, _.languages[lang], lang));
        if (immediateClose) {
          _self.close();
        }
      },
      false,
    );

    return _self.Prism;
  }

  //Get current script and highlight
  var script =
    document.currentScript || [].slice.call(document.getElementsByTagName("script")).pop();

  if (script) {
    _.filename = script.src;

    if (document.addEventListener && !_.manual && !script.hasAttribute("data-manual")) {
      if (document.readyState !== "loading") {
        if (window.requestAnimationFrame) {
          window.requestAnimationFrame(_.highlightAll);
        } else {
          window.setTimeout(_.highlightAll, 16);
        }
      } else {
        document.addEventListener("DOMContentLoaded", _.highlightAll);
      }
    }
  }

  return _self.Prism;
})();

if (typeof module !== "undefined" && module.exports) {
  module.exports = Prism;
}

// hack for components to work correctly in node.js
if (typeof global !== "undefined") {
  global.Prism = Prism;
}

/* **********************************************
     Begin prism-markup.js
********************************************** */

Prism.languages.markup = {
  comment: /<!--[\w\W]*?-->/,
  prolog: /<\?[\w\W]+?\?>/,
  doctype: /<!DOCTYPE[\w\W]+?>/i,
  cdata: /<!\[CDATA\[[\w\W]*?]]>/i,
  tag: {
    pattern:
      /<\/?(?!\d)[^\s>\/=$<]+(?:\s+[^\s>\/=]+(?:=(?:("|')(?:\\\1|\\?(?!\1)[\w\W])*\1|[^\s'">=]+))?)*\s*\/?>/i,
    inside: {
      tag: {
        pattern: /^<\/?[^\s>\/]+/i,
        inside: {
          punctuation: /^<\/?/,
          namespace: /^[^\s>\/:]+:/,
        },
      },
      "attr-value": {
        pattern: /=(?:('|")[\w\W]*?(\1)|[^\s>]+)/i,
        inside: {
          punctuation: /[=>"']/,
        },
      },
      punctuation: /\/?>/,
      "attr-name": {
        pattern: /[^\s>\/]+/,
        inside: {
          namespace: /^[^\s>\/:]+:/,
        },
      },
    },
  },
  entity: /&#?[\da-z]{1,8};/i,
};

// Plugin to make entity title show the real entity, idea by Roman Komarov
Prism.hooks.add("wrap", function (env) {
  if (env.type === "entity") {
    env.attributes["title"] = env.content.replace(/&amp;/, "&");
  }
});

Prism.languages.xml = Prism.languages.markup;
Prism.languages.html = Prism.languages.markup;
Prism.languages.mathml = Prism.languages.markup;
Prism.languages.svg = Prism.languages.markup;

/* **********************************************
     Begin prism-css.js
********************************************** */

Prism.languages.css = {
  comment: /\/\*[\w\W]*?\*\//,
  atrule: {
    pattern: /@[\w-]+?.*?(;|(?=\s*\{))/i,
    inside: {
      rule: /@[\w-]+/,
      // See rest below
    },
  },
  url: /url\((?:(["'])(\\(?:\r\n|[\w\W])|(?!\1)[^\\\r\n])*\1|.*?)\)/i,
  selector: /[^\{\}\s][^\{\};]*?(?=\s*\{)/,
  string: {
    pattern: /("|')(\\(?:\r\n|[\w\W])|(?!\1)[^\\\r\n])*\1/,
    greedy: true,
  },
  property: /(\b|\B)[\w-]+(?=\s*:)/i,
  important: /\B!important\b/i,
  function: /[-a-z0-9]+(?=\()/i,
  punctuation: /[(){};:]/,
};

Prism.languages.css["atrule"].inside.rest = Prism.util.clone(Prism.languages.css);

if (Prism.languages.markup) {
  Prism.languages.insertBefore("markup", "tag", {
    style: {
      pattern: /(<style[\w\W]*?>)[\w\W]*?(?=<\/style>)/i,
      lookbehind: true,
      inside: Prism.languages.css,
      alias: "language-css",
    },
  });

  Prism.languages.insertBefore(
    "inside",
    "attr-value",
    {
      "style-attr": {
        pattern: /\s*style=("|').*?\1/i,
        inside: {
          "attr-name": {
            pattern: /^\s*style/i,
            inside: Prism.languages.markup.tag.inside,
          },
          punctuation: /^\s*=\s*['"]|['"]\s*$/,
          "attr-value": {
            pattern: /.+/i,
            inside: Prism.languages.css,
          },
        },
        alias: "language-css",
      },
    },
    Prism.languages.markup.tag,
  );
}

/* **********************************************
     Begin prism-clike.js
********************************************** */

Prism.languages.clike = {
  comment: [
    {
      pattern: /(^|[^\\])\/\*[\w\W]*?\*\//,
      lookbehind: true,
    },
    {
      pattern: /(^|[^\\:])\/\/.*/,
      lookbehind: true,
    },
  ],
  string: {
    pattern: /(["'])(\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
    greedy: true,
  },
  "class-name": {
    pattern:
      /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[a-z0-9_\.\\]+/i,
    lookbehind: true,
    inside: {
      punctuation: /(\.|\\)/,
    },
  },
  keyword:
    /\b(if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,
  boolean: /\b(true|false)\b/,
  function: /[a-z0-9_]+(?=\()/i,
  number: /\b-?(?:0x[\da-f]+|\d*\.?\d+(?:e[+-]?\d+)?)\b/i,
  operator: /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*|\/|~|\^|%/,
  punctuation: /[{}[\];(),.:]/,
};

/* **********************************************
     Begin prism-javascript.js
********************************************** */

Prism.languages.javascript = Prism.languages.extend("clike", {
  keyword:
    /\b(as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/,
  number: /\b-?(0x[\dA-Fa-f]+|0b[01]+|0o[0-7]+|\d*\.?\d+([Ee][+-]?\d+)?|NaN|Infinity)\b/,
  // Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
  function: /[_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*(?=\()/i,
  operator: /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*\*?|\/|~|\^|%|\.{3}/,
});

Prism.languages.insertBefore("javascript", "keyword", {
  regex: {
    pattern: /(^|[^/])\/(?!\/)(\[.+?]|\\.|[^/\\\r\n])+\/[gimyu]{0,5}(?=\s*($|[\r\n,.;})]))/,
    lookbehind: true,
    greedy: true,
  },
});

Prism.languages.insertBefore("javascript", "string", {
  "template-string": {
    pattern: /`(?:\\\\|\\?[^\\])*?`/,
    greedy: true,
    inside: {
      interpolation: {
        pattern: /\$\{[^}]+\}/,
        inside: {
          "interpolation-punctuation": {
            pattern: /^\$\{|\}$/,
            alias: "punctuation",
          },
          rest: Prism.languages.javascript,
        },
      },
      string: /[\s\S]+/,
    },
  },
});

if (Prism.languages.markup) {
  Prism.languages.insertBefore("markup", "tag", {
    script: {
      pattern: /(<script[\w\W]*?>)[\w\W]*?(?=<\/script>)/i,
      lookbehind: true,
      inside: Prism.languages.javascript,
      alias: "language-javascript",
    },
  });
}

Prism.languages.js = Prism.languages.javascript;

/* **********************************************
     Begin prism-file-highlight.js
********************************************** */

(function () {
  if (typeof self === "undefined" || !self.Prism || !self.document || !document.querySelector) {
    return;
  }

  self.Prism.fileHighlight = function () {
    var Extensions = {
      js: "javascript",
      py: "python",
      rb: "ruby",
      ps1: "powershell",
      psm1: "powershell",
      sh: "bash",
      bat: "batch",
      h: "c",
      tex: "latex",
    };

    if (Array.prototype.forEach) {
      // Check to prevent error in IE8
      Array.prototype.slice
        .call(document.querySelectorAll("pre[data-src]"))
        .forEach(function (pre) {
          var src = pre.getAttribute("data-src");

          var language,
            parent = pre;
          var lang = /\blang(?:uage)?-(?!\*)(\w+)\b/i;
          while (parent && !lang.test(parent.className)) {
            parent = parent.parentNode;
          }

          if (parent) {
            language = (pre.className.match(lang) || [, ""])[1];
          }

          if (!language) {
            var extension = (src.match(/\.(\w+)$/) || [, ""])[1];
            language = Extensions[extension] || extension;
          }

          var code = document.createElement("code");
          code.className = "language-" + language;

          pre.textContent = "";

          code.textContent = "Loading…";

          pre.appendChild(code);

          var xhr = new XMLHttpRequest();

          xhr.open("GET", src, true);

          xhr.onreadystatechange = function () {
            if (xhr.readyState == 4) {
              if (xhr.status < 400 && xhr.responseText) {
                code.textContent = xhr.responseText;

                Prism.highlightElement(code);
              } else if (xhr.status >= 400) {
                code.textContent =
                  "✖ Error " + xhr.status + " while fetching file: " + xhr.statusText;
              } else {
                code.textContent = "✖ Error: File does not exist or is empty";
              }
            }
          };

          xhr.send(null);
        });
    }
  };

  document.addEventListener("DOMContentLoaded", self.Prism.fileHighlight);
})();