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Diffstat (limited to 'node_modules/lodash/template.js')
| -rw-r--r-- | node_modules/lodash/template.js | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/node_modules/lodash/template.js b/node_modules/lodash/template.js new file mode 100644 index 0000000..f71d130 --- /dev/null +++ b/node_modules/lodash/template.js @@ -0,0 +1,253 @@ +var assignInWith = require('./assignInWith'), + attempt = require('./attempt'), + baseValues = require('./_baseValues'), + customDefaultsAssignIn = require('./_customDefaultsAssignIn'), + escapeStringChar = require('./_escapeStringChar'), + isError = require('./isError'), + isIterateeCall = require('./_isIterateeCall'), + keys = require('./keys'), + reInterpolate = require('./_reInterpolate'), + templateSettings = require('./templateSettings'), + toString = require('./toString'); + +/** Used to match empty string literals in compiled template source. */ +var reEmptyStringLeading = /\b__p \+= '';/g, + reEmptyStringMiddle = /\b(__p \+=) '' \+/g, + reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; + +/** + * Used to match + * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components). + */ +var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; + +/** Used to ensure capturing order of template delimiters. */ +var reNoMatch = /($^)/; + +/** Used to match unescaped characters in compiled string literals. */ +var reUnescapedString = /['\n\r\u2028\u2029\\]/g; + +/** Used for built-in method references. */ +var objectProto = Object.prototype; + +/** Used to check objects for own properties. */ +var hasOwnProperty = objectProto.hasOwnProperty; + +/** + * Creates a compiled template function that can interpolate data properties + * in "interpolate" delimiters, HTML-escape interpolated data properties in + * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data + * properties may be accessed as free variables in the template. If a setting + * object is given, it takes precedence over `_.templateSettings` values. + * + * **Note:** In the development build `_.template` utilizes + * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl) + * for easier debugging. + * + * For more information on precompiling templates see + * [lodash's custom builds documentation](https://lodash.com/custom-builds). + * + * For more information on Chrome extension sandboxes see + * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval). + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category String + * @param {string} [string=''] The template string. + * @param {Object} [options={}] The options object. + * @param {RegExp} [options.escape=_.templateSettings.escape] + * The HTML "escape" delimiter. + * @param {RegExp} [options.evaluate=_.templateSettings.evaluate] + * The "evaluate" delimiter. + * @param {Object} [options.imports=_.templateSettings.imports] + * An object to import into the template as free variables. + * @param {RegExp} [options.interpolate=_.templateSettings.interpolate] + * The "interpolate" delimiter. + * @param {string} [options.sourceURL='templateSources[n]'] + * The sourceURL of the compiled template. + * @param {string} [options.variable='obj'] + * The data object variable name. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the compiled template function. + * @example + * + * // Use the "interpolate" delimiter to create a compiled template. + * var compiled = _.template('hello <%= user %>!'); + * compiled({ 'user': 'fred' }); + * // => 'hello fred!' + * + * // Use the HTML "escape" delimiter to escape data property values. + * var compiled = _.template('<b><%- value %></b>'); + * compiled({ 'value': '<script>' }); + * // => '<b><script></b>' + * + * // Use the "evaluate" delimiter to execute JavaScript and generate HTML. + * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>'); + * compiled({ 'users': ['fred', 'barney'] }); + * // => '<li>fred</li><li>barney</li>' + * + * // Use the internal `print` function in "evaluate" delimiters. + * var compiled = _.template('<% print("hello " + user); %>!'); + * compiled({ 'user': 'barney' }); + * // => 'hello barney!' + * + * // Use the ES template literal delimiter as an "interpolate" delimiter. + * // Disable support by replacing the "interpolate" delimiter. + * var compiled = _.template('hello ${ user }!'); + * compiled({ 'user': 'pebbles' }); + * // => 'hello pebbles!' + * + * // Use backslashes to treat delimiters as plain text. + * var compiled = _.template('<%= "\\<%- value %\\>" %>'); + * compiled({ 'value': 'ignored' }); + * // => '<%- value %>' + * + * // Use the `imports` option to import `jQuery` as `jq`. + * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>'; + * var compiled = _.template(text, { 'imports': { 'jq': jQuery } }); + * compiled({ 'users': ['fred', 'barney'] }); + * // => '<li>fred</li><li>barney</li>' + * + * // Use the `sourceURL` option to specify a custom sourceURL for the template. + * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' }); + * compiled(data); + * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector. + * + * // Use the `variable` option to ensure a with-statement isn't used in the compiled template. + * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' }); + * compiled.source; + * // => function(data) { + * // var __t, __p = ''; + * // __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!'; + * // return __p; + * // } + * + * // Use custom template delimiters. + * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g; + * var compiled = _.template('hello {{ user }}!'); + * compiled({ 'user': 'mustache' }); + * // => 'hello mustache!' + * + * // Use the `source` property to inline compiled templates for meaningful + * // line numbers in error messages and stack traces. + * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\ + * var JST = {\ + * "main": ' + _.template(mainText).source + '\ + * };\ + * '); + */ +function template(string, options, guard) { + // Based on John Resig's `tmpl` implementation + // (http://ejohn.org/blog/javascript-micro-templating/) + // and Laura Doktorova's doT.js (https://github.com/olado/doT). + var settings = templateSettings.imports._.templateSettings || templateSettings; + + if (guard && isIterateeCall(string, options, guard)) { + options = undefined; + } + string = toString(string); + options = assignInWith({}, options, settings, customDefaultsAssignIn); + + var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn), + importsKeys = keys(imports), + importsValues = baseValues(imports, importsKeys); + + var isEscaping, + isEvaluating, + index = 0, + interpolate = options.interpolate || reNoMatch, + source = "__p += '"; + + // Compile the regexp to match each delimiter. + var reDelimiters = RegExp( + (options.escape || reNoMatch).source + '|' + + interpolate.source + '|' + + (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' + + (options.evaluate || reNoMatch).source + '|$' + , 'g'); + + // Use a sourceURL for easier debugging. + // The sourceURL gets injected into the source that's eval-ed, so be careful + // with lookup (in case of e.g. prototype pollution), and strip newlines if any. + // A newline wouldn't be a valid sourceURL anyway, and it'd enable code injection. + var sourceURL = hasOwnProperty.call(options, 'sourceURL') + ? ('//# sourceURL=' + + (options.sourceURL + '').replace(/[\r\n]/g, ' ') + + '\n') + : ''; + + string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) { + interpolateValue || (interpolateValue = esTemplateValue); + + // Escape characters that can't be included in string literals. + source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar); + + // Replace delimiters with snippets. + if (escapeValue) { + isEscaping = true; + source += "' +\n__e(" + escapeValue + ") +\n'"; + } + if (evaluateValue) { + isEvaluating = true; + source += "';\n" + evaluateValue + ";\n__p += '"; + } + if (interpolateValue) { + source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'"; + } + index = offset + match.length; + + // The JS engine embedded in Adobe products needs `match` returned in + // order to produce the correct `offset` value. + return match; + }); + + source += "';\n"; + + // If `variable` is not specified wrap a with-statement around the generated + // code to add the data object to the top of the scope chain. + // Like with sourceURL, we take care to not check the option's prototype, + // as this configuration is a code injection vector. + var variable = hasOwnProperty.call(options, 'variable') && options.variable; + if (!variable) { + source = 'with (obj) {\n' + source + '\n}\n'; + } + // Cleanup code by stripping empty strings. + source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source) + .replace(reEmptyStringMiddle, '$1') + .replace(reEmptyStringTrailing, '$1;'); + + // Frame code as the function body. + source = 'function(' + (variable || 'obj') + ') {\n' + + (variable + ? '' + : 'obj || (obj = {});\n' + ) + + "var __t, __p = ''" + + (isEscaping + ? ', __e = _.escape' + : '' + ) + + (isEvaluating + ? ', __j = Array.prototype.join;\n' + + "function print() { __p += __j.call(arguments, '') }\n" + : ';\n' + ) + + source + + 'return __p\n}'; + + var result = attempt(function() { + return Function(importsKeys, sourceURL + 'return ' + source) + .apply(undefined, importsValues); + }); + + // Provide the compiled function's source by its `toString` method or + // the `source` property as a convenience for inlining compiled templates. + result.source = source; + if (isError(result)) { + throw result; + } + return result; +} + +module.exports = template; |