/*
 * EJS Embedded JavaScript templates
 * Copyright 2112 Matthew Eernisse (mde@fleegix.org)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/
'use strict';
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var fs_1 = __importDefault(require("fs"));
var path_1 = __importDefault(require("path"));
var utils_js_1 = __importDefault(require("./utils.js"));
/**
 * @file Embedded JavaScript templating engine. {@link http://ejs.co}
 * @author Matthew Eernisse <mde@fleegix.org>
 * @project EJS
 * @license {@link http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0}
 */
/**
 * EJS internal functions.
 *
 * Technically this "module" lies in the same file as {@link module:ejs}, for
 * the sake of organization all the private functions re grouped into this
 * module.
 *
 * @module ejs-internal
 * @private
 */
/**
 * Embedded JavaScript templating engine.
 *
 * @module ejs
 * @public
 */
// Keyword used in code generation -- updated to 'var' in CJS build
var DECLARATION_KEYWORD = 'var';
var ejs = {};
/** @type {string} */
var _DEFAULT_OPEN_DELIMITER = '<';
var _DEFAULT_CLOSE_DELIMITER = '>';
var _DEFAULT_DELIMITER = '%';
var _DEFAULT_LOCALS_NAME = 'locals';
var _REGEX_STRING = '(<%%|%%>|<%=|<%-|<%_|<%#|<%|%>|-%>|_%>)';
var _OPTS_PASSABLE_WITH_DATA = ['delimiter', 'scope', 'context', 'debug', 'compileDebug',
    '_with', 'rmWhitespace', 'strict', 'filename', 'async'];
// We don't allow 'cache' option to be passed in the data obj for
// the normal `render` call, but this is where Express 2 & 3 put it
// so we make an exception for `renderFile`
var _OPTS_PASSABLE_WITH_DATA_EXPRESS = _OPTS_PASSABLE_WITH_DATA.concat('cache');
var _BOM = /^\uFEFF/;
var _JS_IDENTIFIER = /^[a-zA-Z_$][0-9a-zA-Z_$]*$/;
/**
 * EJS template function cache. This can be a LRU object from lru-cache NPM
 * module. By default, it is {@link module:utils.cache}, a simple in-process
 * cache that grows continuously.
 *
 * @type {Cache}
 */
ejs.cache = utils_js_1.default.cache;
/**
 * Custom file loader. Useful for template preprocessing or restricting access
 * to a certain part of the filesystem.
 *
 * @type {fileLoader}
 */
ejs.fileLoader = fs_1.default.readFileSync;
/**
 * Name of the object containing the locals.
 *
 * This variable is overridden by {@link Options}`.localsName` if it is not
 * `undefined`.
 *
 * @type {String}
 * @public
 */
ejs.localsName = _DEFAULT_LOCALS_NAME;
/**
 * Promise implementation -- defaults to the native implementation if available
 * This is mostly just for testability
 *
 * @type {PromiseConstructorLike}
 * @public
 */
ejs.promiseImpl = (new Function('return this;'))().Promise;
/**
 * Get the path to the included file from the parent file path and the
 * specified path.
 *
 * @param {String}  name     specified path
 * @param {String}  filename parent file path
 * @param {Boolean} [isDir=false] whether the parent file path is a directory
 * @return {String}
 */
ejs.resolveInclude = function (name, filename, isDir) {
    var dirname = path_1.default.dirname;
    var extname = path_1.default.extname;
    var resolve = path_1.default.resolve;
    var includePath = resolve(isDir ? filename : dirname(filename), name);
    var ext = extname(name);
    if (!ext) {
        includePath += '.ejs';
    }
    return includePath;
};
/**
 * Try to resolve file path on multiple directories
 *
 * @param  {String}        name  specified path
 * @param  {Array<String>} paths list of possible parent directory paths
 * @return {String}
 */
function resolvePaths(name, paths) {
    var filePath;
    if (paths.some(function (v) {
        filePath = ejs.resolveInclude(name, v, true);
        return fs_1.default.existsSync(filePath);
    })) {
        return filePath;
    }
}
/**
 * Get the path to the included file by Options
 *
 * @param  {String}  path    specified path
 * @param  {Options} options compilation options
 * @return {String}
 */
function getIncludePath(path, options) {
    var includePath;
    var filePath;
    var views = options.views;
    var match = /^[A-Za-z]+:\\|^\//.exec(path);
    // Abs path
    if (match && match.length) {
        path = path.replace(/^\/*/, '');
        if (Array.isArray(options.root)) {
            includePath = resolvePaths(path, options.root);
        }
        else {
            includePath = ejs.resolveInclude(path, options.root || '/', true);
        }
    }
    // Relative paths
    else {
        // Look relative to a passed filename first
        if (options.filename) {
            filePath = ejs.resolveInclude(path, options.filename);
            if (fs_1.default.existsSync(filePath)) {
                includePath = filePath;
            }
        }
        // Then look in any views directories
        if (!includePath && Array.isArray(views)) {
            includePath = resolvePaths(path, views);
        }
        if (!includePath && typeof options.includer !== 'function') {
            throw new Error('Could not find the include file "' +
                options.escapeFunction(path) + '"');
        }
    }
    return includePath;
}
/**
 * Get the template from a string or a file, either compiled on-the-fly or
 * read from cache (if enabled), and cache the template if needed.
 *
 * If `template` is not set, the file specified in `options.filename` will be
 * read.
 *
 * If `options.cache` is true, this function reads the file from
 * `options.filename` so it must be set prior to calling this function.
 *
 * @memberof module:ejs-internal
 * @param {Options} options   compilation options
 * @param {String} [template] template source
 * @return {TemplateFunction}
 * @static
 */
function handleCache(options, template) {
    var func;
    var filename = options.filename;
    var hasTemplate = arguments.length > 1;
    if (options.cache) {
        if (!filename) {
            throw new Error('cache option requires a filename');
        }
        func = ejs.cache.get(filename);
        if (func) {
            return func;
        }
        if (!hasTemplate) {
            template = fileLoader(filename).toString().replace(_BOM, '');
        }
    }
    else if (!hasTemplate) {
        // istanbul ignore if: should not happen at all
        if (!filename) {
            throw new Error('Internal EJS error: no file name or template '
                + 'provided');
        }
        template = fileLoader(filename).toString().replace(_BOM, '');
    }
    func = ejs.compile(template, options);
    if (options.cache) {
        ejs.cache.set(filename, func);
    }
    return func;
}
/**
 * Try calling handleCache with the given options and data and call the
 * callback with the result. If an error occurs, call the callback with
 * the error. Used by renderFile().
 *
 * @memberof module:ejs-internal
 * @param {Options} options    compilation options
 * @param {Object} data        template data
 * @param {RenderFileCallback} cb callback
 * @static
 */
function tryHandleCache(options, data, cb) {
    var result;
    if (!cb) {
        if (typeof ejs.promiseImpl == 'function') {
            return new ejs.promiseImpl(function (resolve, reject) {
                try {
                    result = handleCache(options)(data);
                    resolve(result);
                }
                catch (err) {
                    reject(err);
                }
            });
        }
        else {
            throw new Error('Please provide a callback function');
        }
    }
    else {
        try {
            result = handleCache(options)(data);
        }
        catch (err) {
            return cb(err);
        }
        cb(null, result);
    }
}
/**
 * fileLoader is independent
 *
 * @param {String} filePath ejs file path.
 * @return {String} The contents of the specified file.
 * @static
 */
function fileLoader(filePath) {
    return ejs.fileLoader(filePath);
}
/**
 * Get the template function.
 *
 * If `options.cache` is `true`, then the template is cached.
 *
 * @memberof module:ejs-internal
 * @param {String}  path    path for the specified file
 * @param {Options} options compilation options
 * @return {TemplateFunction}
 * @static
 */
function includeFile(path, options) {
    var opts = utils_js_1.default.shallowCopy(utils_js_1.default.createNullProtoObjWherePossible(), options);
    opts.filename = getIncludePath(path, opts);
    if (typeof options.includer === 'function') {
        var includerResult = options.includer(path, opts.filename);
        if (includerResult) {
            if (includerResult.filename) {
                opts.filename = includerResult.filename;
            }
            if (includerResult.template) {
                return handleCache(opts, includerResult.template);
            }
        }
    }
    return handleCache(opts);
}
/**
 * Re-throw the given `err` in context to the `str` of ejs, `filename`, and
 * `lineno`.
 *
 * @implements {RethrowCallback}
 * @memberof module:ejs-internal
 * @param {Error}  err      Error object
 * @param {String} str      EJS source
 * @param {String} flnm     file name of the EJS file
 * @param {Number} lineno   line number of the error
 * @param {EscapeCallback} esc
 * @static
 */
function rethrow(err, str, flnm, lineno, esc) {
    var lines = str.split('\n');
    var start = Math.max(lineno - 3, 0);
    var end = Math.min(lines.length, lineno + 3);
    var filename = esc(flnm);
    // Error context
    var context = lines.slice(start, end).map(function (line, i) {
        var curr = i + start + 1;
        return (curr == lineno ? ' >> ' : '    ')
            + curr
            + '| '
            + line;
    }).join('\n');
    // Alter exception message
    err.path = filename;
    err.message = (filename || 'ejs') + ':'
        + lineno + '\n'
        + context + '\n\n'
        + err.message;
    throw err;
}
function stripSemi(str) {
    return str.replace(/;(\s*$)/, '$1');
}
/**
 * Compile the given `str` of ejs into a template function.
 *
 * @param {String}  template EJS template
 *
 * @param {Options} [opts] compilation options
 *
 * @return {TemplateFunction}
 * Note that the return type of the function depends on the value of `opts.async`.
 * @public
 */
ejs.compile = function compile(template, opts) {
    var templ;
    // v1 compat
    // 'scope' is 'context'
    // FIXME: Remove this in a future version
    if (opts && opts.scope) {
        console.warn('`scope` option is deprecated and will be removed in future EJS');
        if (!opts.context) {
            opts.context = opts.scope;
        }
        delete opts.scope;
    }
    templ = new Template(template, opts);
    return templ.compile();
};
/**
 * Render the given `template` of ejs.
 *
 * If you would like to include options but not data, you need to explicitly
 * call this function with `data` being an empty object or `null`.
 *
 * @param {String}   template EJS template
 * @param {Object}  [data={}] template data
 * @param {Options} [opts={}] compilation and rendering options
 * @return {(String|Promise<String>)}
 * Return value type depends on `opts.async`.
 * @public
 */
ejs.render = function (template, d, o) {
    var data = d || utils_js_1.default.createNullProtoObjWherePossible();
    var opts = o || utils_js_1.default.createNullProtoObjWherePossible();
    // No options object -- if there are optiony names
    // in the data, copy them to options
    if (arguments.length == 2) {
        utils_js_1.default.shallowCopyFromList(opts, data, _OPTS_PASSABLE_WITH_DATA);
    }
    return handleCache(opts, template)(data);
};
/**
 * Render an EJS file at the given `path` and callback `cb(err, str)`.
 *
 * If you would like to include options but not data, you need to explicitly
 * call this function with `data` being an empty object or `null`.
 *
 * @param {String}             path     path to the EJS file
 * @param {Object}            [data={}] template data
 * @param {Options}           [opts={}] compilation and rendering options
 * @param {RenderFileCallback} cb callback
 * @public
 */
ejs.renderFile = function () {
    var args = Array.prototype.slice.call(arguments);
    var filename = args.shift();
    var cb;
    var opts = { filename: filename };
    var data;
    var viewOpts;
    // Do we have a callback?
    if (typeof arguments[arguments.length - 1] == 'function') {
        cb = args.pop();
    }
    // Do we have data/opts?
    if (args.length) {
        // Should always have data obj
        data = args.shift();
        // Normal passed opts (data obj + opts obj)
        if (args.length) {
            // Use shallowCopy so we don't pollute passed in opts obj with new vals
            utils_js_1.default.shallowCopy(opts, args.pop());
        }
        // Special casing for Express (settings + opts-in-data)
        else {
            // Express 3 and 4
            if (data.settings) {
                // Pull a few things from known locations
                if (data.settings.views) {
                    opts.views = data.settings.views;
                }
                if (data.settings['view cache']) {
                    opts.cache = true;
                }
                // Undocumented after Express 2, but still usable, esp. for
                // items that are unsafe to be passed along with data, like `root`
                viewOpts = data.settings['view options'];
                if (viewOpts) {
                    utils_js_1.default.shallowCopy(opts, viewOpts);
                }
            }
            // Express 2 and lower, values set in app.locals, or people who just
            // want to pass options in their data. NOTE: These values will override
            // anything previously set in settings  or settings['view options']
            utils_js_1.default.shallowCopyFromList(opts, data, _OPTS_PASSABLE_WITH_DATA_EXPRESS);
        }
        opts.filename = filename;
    }
    else {
        data = utils_js_1.default.createNullProtoObjWherePossible();
    }
    return tryHandleCache(opts, data, cb);
};
/**
 * Clear intermediate JavaScript cache. Calls {@link Cache#reset}.
 * @public
 */
/**
 * EJS template class
 * @public
 */
ejs.Template = Template;
ejs.clearCache = function () {
    ejs.cache.reset();
};
function Template(text, optsParam) {
    var opts = utils_js_1.default.hasOwnOnlyObject(optsParam);
    var options = utils_js_1.default.createNullProtoObjWherePossible();
    this.templateText = text;
    /** @type {string | null} */
    this.mode = null;
    this.truncate = false;
    this.currentLine = 1;
    this.source = '';
    options.escapeFunction = opts.escape || opts.escapeFunction || utils_js_1.default.escapeXML;
    options.compileDebug = opts.compileDebug !== false;
    options.debug = !!opts.debug;
    options.filename = opts.filename;
    options.openDelimiter = opts.openDelimiter || ejs.openDelimiter || _DEFAULT_OPEN_DELIMITER;
    options.closeDelimiter = opts.closeDelimiter || ejs.closeDelimiter || _DEFAULT_CLOSE_DELIMITER;
    options.delimiter = opts.delimiter || ejs.delimiter || _DEFAULT_DELIMITER;
    options.strict = opts.strict || false;
    options.context = opts.context;
    options.cache = opts.cache || false;
    options.rmWhitespace = opts.rmWhitespace;
    options.root = opts.root;
    options.includer = opts.includer;
    options.outputFunctionName = opts.outputFunctionName;
    options.localsName = opts.localsName || ejs.localsName || _DEFAULT_LOCALS_NAME;
    options.views = opts.views;
    options.async = opts.async;
    options.destructuredLocals = opts.destructuredLocals;
    options.legacyInclude = typeof opts.legacyInclude != 'undefined' ? !!opts.legacyInclude : true;
    if (options.strict) {
        options._with = false;
    }
    else {
        options._with = typeof opts._with != 'undefined' ? opts._with : true;
    }
    this.opts = options;
    this.regex = this.createRegex();
}
Template.modes = {
    EVAL: 'eval',
    ESCAPED: 'escaped',
    RAW: 'raw',
    COMMENT: 'comment',
    LITERAL: 'literal'
};
Template.prototype = {
    createRegex: function () {
        var str = _REGEX_STRING;
        var delim = utils_js_1.default.escapeRegExpChars(this.opts.delimiter);
        var open = utils_js_1.default.escapeRegExpChars(this.opts.openDelimiter);
        var close = utils_js_1.default.escapeRegExpChars(this.opts.closeDelimiter);
        str = str.replace(/%/g, delim)
            .replace(/</g, open)
            .replace(/>/g, close);
        return new RegExp(str);
    },
    compile: function () {
        /** @type {string} */
        var src;
        var fn;
        var opts = this.opts;
        var prepended = '';
        var appended = '';
        /** @type {EscapeCallback} */
        var escapeFn = opts.escapeFunction;
        /** @type {FunctionConstructor} */
        var ctor;
        /** @type {string} */
        var sanitizedFilename = opts.filename ? JSON.stringify(opts.filename) : 'undefined';
        if (!this.source) {
            this.generateSource();
            prepended +=
                "  ".concat(DECLARATION_KEYWORD, " __output = \"\";\n") +
                    '  function __append(s) { if (s !== undefined && s !== null) __output += s }\n';
            if (opts.outputFunctionName) {
                if (!_JS_IDENTIFIER.test(opts.outputFunctionName)) {
                    throw new Error('outputFunctionName is not a valid JS identifier.');
                }
                prepended += "  ".concat(DECLARATION_KEYWORD, " ") + opts.outputFunctionName + ' = __append;' + '\n';
            }
            if (opts.localsName && !_JS_IDENTIFIER.test(opts.localsName)) {
                throw new Error('localsName is not a valid JS identifier.');
            }
            if (opts.destructuredLocals && opts.destructuredLocals.length) {
                var destructuring = "  ".concat(DECLARATION_KEYWORD, " __locals = (") + opts.localsName + ' || {}),\n';
                for (var i = 0; i < opts.destructuredLocals.length; i++) {
                    var name_1 = opts.destructuredLocals[i];
                    if (!_JS_IDENTIFIER.test(name_1)) {
                        throw new Error('destructuredLocals[' + i + '] is not a valid JS identifier.');
                    }
                    if (i > 0) {
                        destructuring += ',\n  ';
                    }
                    destructuring += name_1 + ' = __locals.' + name_1;
                }
                prepended += destructuring + ';\n';
            }
            if (opts._with !== false) {
                prepended += '  with (' + opts.localsName + ' || {}) {' + '\n';
                appended += '  }' + '\n';
            }
            appended += '  return __output;' + '\n';
            this.source = prepended + this.source + appended;
        }
        if (opts.compileDebug) {
            src = "".concat(DECLARATION_KEYWORD, " __line = 1") + '\n'
                + '  , __lines = ' + JSON.stringify(this.templateText) + '\n'
                + '  , __filename = ' + sanitizedFilename + ';' + '\n'
                + 'try {' + '\n'
                + this.source
                + '} catch (e) {' + '\n'
                + '  rethrow(e, __lines, __filename, __line, escapeFn);' + '\n'
                + '}' + '\n';
        }
        else {
            src = this.source;
        }
        if (opts.strict) {
            src = '"use strict";\n' + src;
        }
        if (opts.debug) {
            console.log(src);
        }
        if (opts.compileDebug && opts.filename) {
            src = src + '\n'
                + '//# sourceURL=' + sanitizedFilename + '\n';
        }
        try {
            if (opts.async) {
                // Have to use generated function for this, since in envs without support,
                // it breaks in parsing
                try {
                    ctor = (new Function('return (async function(){}).constructor;'))();
                }
                catch (e) {
                    if (e instanceof SyntaxError) {
                        throw new Error('This environment does not support async/await');
                    }
                    else {
                        throw e;
                    }
                }
            }
            else {
                ctor = Function;
            }
            fn = new ctor(opts.localsName + ', escapeFn, include, rethrow', src);
        }
        catch (e) {
            // istanbul ignore else
            if (e instanceof SyntaxError) {
                if (opts.filename) {
                    e.message += ' in ' + opts.filename;
                }
                e.message += ' while compiling ejs\n\n';
                e.message += 'If the above error is not helpful, you may want to try EJS-Lint:\n';
                e.message += 'https://github.com/RyanZim/EJS-Lint';
                if (!opts.async) {
                    e.message += '\n';
                    e.message += 'Or, if you meant to create an async function, pass `async: true` as an option.';
                }
            }
            throw e;
        }
        // Return a callable function which will execute the function
        // created by the source-code, with the passed data as locals
        // Adds a local `include` function which allows full recursive include
        var returnedFn = function anonymous(data) {
            var include = function (path, includeData) {
                var d = utils_js_1.default.shallowCopy(utils_js_1.default.createNullProtoObjWherePossible(), data);
                if (includeData) {
                    d = utils_js_1.default.shallowCopy(d, includeData);
                }
                return includeFile(path, opts)(d);
            };
            return fn.apply(opts.context, [data || utils_js_1.default.createNullProtoObjWherePossible(), escapeFn, include, rethrow]);
        };
        if (opts.filename && typeof Object.defineProperty === 'function') {
            var filename = opts.filename;
            var basename = path_1.default.basename(filename, path_1.default.extname(filename));
            try {
                Object.defineProperty(returnedFn, 'name', {
                    value: basename,
                    writable: false,
                    enumerable: false,
                    configurable: true
                });
            }
            catch (e) { /* ignore */ }
        }
        return returnedFn;
    },
    generateSource: function () {
        var opts = this.opts;
        if (opts.rmWhitespace) {
            // Have to use two separate replace here as `^` and `$` operators don't
            // work well with `\r` and empty lines don't work well with the `m` flag.
            this.templateText =
                this.templateText.replace(/[\r\n]+/g, '\n').replace(/^\s+|\s+$/gm, '');
        }
        var self = this;
        var d = this.opts.delimiter;
        var o = this.opts.openDelimiter;
        var c = this.opts.closeDelimiter;
        // Slurp spaces and tabs before opening whitespace slurp tag and after closing whitespace slurp tag
        // Build the tags using custom delimiters: openDelimiter + delimiter + '_' and '_' + delimiter + closeDelimiter
        var openWhitespaceSlurpTag = utils_js_1.default.escapeRegExpChars(o + d + '_');
        var closeWhitespaceSlurpTag = utils_js_1.default.escapeRegExpChars('_' + d + c);
        var openWhitespaceSlurpReplacement = o + d + '_';
        var closeWhitespaceSlurpReplacement = '_' + d + c;
        this.templateText =
            this.templateText.replace(new RegExp('[ \\t]*' + openWhitespaceSlurpTag, 'gm'), openWhitespaceSlurpReplacement)
                .replace(new RegExp(closeWhitespaceSlurpTag + '[ \\t]*', 'gm'), closeWhitespaceSlurpReplacement);
        var matches = this.parseTemplateText();
        if (matches && matches.length) {
            matches.forEach(function (line, index) {
                var closing;
                // If this is an opening tag, check for closing tags
                // FIXME: May end up with some false positives here
                // Better to store modes as k/v with openDelimiter + delimiter as key
                // Then this can simply check against the map
                if (line.indexOf(o + d) === 0 // If it is a tag
                    && line.indexOf(o + d + d) !== 0) { // and is not escaped
                    closing = matches[index + 2];
                    if (!(closing == d + c || closing == '-' + d + c || closing == '_' + d + c)) {
                        throw new Error('Could not find matching close tag for "' + line + '".');
                    }
                }
                self.scanLine(line);
            });
        }
    },
    parseTemplateText: function () {
        var str = this.templateText;
        var pat = this.regex;
        var result = pat.exec(str);
        var arr = [];
        var firstPos;
        while (result) {
            firstPos = result.index;
            if (firstPos !== 0) {
                arr.push(str.substring(0, firstPos));
                str = str.slice(firstPos);
            }
            arr.push(result[0]);
            str = str.slice(result[0].length);
            result = pat.exec(str);
        }
        if (str) {
            arr.push(str);
        }
        return arr;
    },
    _addOutput: function (line) {
        if (this.truncate) {
            // Only replace single leading linebreak in the line after
            // -%> tag -- this is the single, trailing linebreak
            // after the tag that the truncation mode replaces
            // Handle Win / Unix / old Mac linebreaks -- do the \r\n
            // combo first in the regex-or
            line = line.replace(/^(?:\r\n|\r|\n)/, '');
            this.truncate = false;
        }
        if (!line) {
            return line;
        }
        // Preserve literal slashes
        line = line.replace(/\\/g, '\\\\');
        // Convert linebreaks
        line = line.replace(/\n/g, '\\n');
        line = line.replace(/\r/g, '\\r');
        // Escape double-quotes
        // - this will be the delimiter during execution
        line = line.replace(/"/g, '\\"');
        this.source += '    ; __append("' + line + '")' + '\n';
    },
    scanLine: function (line) {
        var self = this;
        var d = this.opts.delimiter;
        var o = this.opts.openDelimiter;
        var c = this.opts.closeDelimiter;
        var newLineCount = 0;
        newLineCount = (line.split('\n').length - 1);
        switch (line) {
            case o + d:
            case o + d + '_':
                this.mode = Template.modes.EVAL;
                break;
            case o + d + '=':
                this.mode = Template.modes.ESCAPED;
                break;
            case o + d + '-':
                this.mode = Template.modes.RAW;
                break;
            case o + d + '#':
                this.mode = Template.modes.COMMENT;
                break;
            case o + d + d:
                this.mode = Template.modes.LITERAL;
                this.source += '    ; __append("' + line.replace(o + d + d, o + d) + '")' + '\n';
                break;
            case d + d + c:
                this.mode = Template.modes.LITERAL;
                this.source += '    ; __append("' + line.replace(d + d + c, d + c) + '")' + '\n';
                break;
            case d + c:
            case '-' + d + c:
            case '_' + d + c:
                if (this.mode == Template.modes.LITERAL) {
                    this._addOutput(line);
                }
                this.mode = null;
                this.truncate = line.indexOf('-') === 0 || line.indexOf('_') === 0;
                break;
            default:
                // In script mode, depends on type of tag
                if (this.mode) {
                    // If '//' is found without a line break, add a line break.
                    switch (this.mode) {
                        case Template.modes.EVAL:
                        case Template.modes.ESCAPED:
                        case Template.modes.RAW:
                            if (line.lastIndexOf('//') > line.lastIndexOf('\n')) {
                                line += '\n';
                            }
                    }
                    switch (this.mode) {
                        // Just executing code
                        case Template.modes.EVAL:
                            this.source += '    ; ' + line + '\n';
                            break;
                        // Exec, esc, and output
                        case Template.modes.ESCAPED:
                            this.source += '    ; __append(escapeFn(' + stripSemi(line) + '))' + '\n';
                            break;
                        // Exec and output
                        case Template.modes.RAW:
                            this.source += '    ; __append(' + stripSemi(line) + ')' + '\n';
                            break;
                        case Template.modes.COMMENT:
                            // Do nothing
                            break;
                        // Literal <%% mode, append as raw output
                        case Template.modes.LITERAL:
                            this._addOutput(line);
                            break;
                    }
                }
                // In string mode, just add the output
                else {
                    this._addOutput(line);
                }
        }
        if (self.opts.compileDebug && newLineCount) {
            this.currentLine += newLineCount;
            this.source += '    ; __line = ' + this.currentLine + '\n';
        }
    }
};
/**
 * Escape characters reserved in XML.
 *
 * This is simply an export of {@link module:utils.escapeXML}.
 *
 * If `markup` is `undefined` or `null`, the empty string is returned.
 *
 * @param {String} markup Input string
 * @return {String} Escaped string
 * @public
 * @func
 * */
ejs.escapeXML = utils_js_1.default.escapeXML;
/**
 * Express.js support.
 *
 * This is an alias for {@link module:ejs.renderFile}, in order to support
 * Express.js out-of-the-box.
 *
 * @func
 */
ejs.__express = ejs.renderFile;
/* istanbul ignore if */
if (typeof window != 'undefined') {
    window.ejs = ejs;
}
if (typeof module != 'undefined') {
    module.exports = ejs;
}
exports.default = ejs;
