389 lines
13 KiB
JavaScript
389 lines
13 KiB
JavaScript
/**
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* lodash 3.6.2 (Custom Build) <https://lodash.com/>
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* Build: `lodash modern modularize exports="npm" -o ./`
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* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
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* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
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* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
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* Available under MIT license <https://lodash.com/license>
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*/
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var baseCopy = require('lodash._basecopy'),
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baseToString = require('lodash._basetostring'),
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baseValues = require('lodash._basevalues'),
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isIterateeCall = require('lodash._isiterateecall'),
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reInterpolate = require('lodash._reinterpolate'),
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keys = require('lodash.keys'),
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restParam = require('lodash.restparam'),
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templateSettings = require('lodash.templatesettings');
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/** `Object#toString` result references. */
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var errorTag = '[object Error]';
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/** Used to match empty string literals in compiled template source. */
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var reEmptyStringLeading = /\b__p \+= '';/g,
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reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
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reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;
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/** Used to match [ES template delimiters](http://ecma-international.org/ecma-262/6.0/#sec-template-literal-lexical-components). */
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var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
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/** Used to ensure capturing order of template delimiters. */
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var reNoMatch = /($^)/;
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/** Used to match unescaped characters in compiled string literals. */
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var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
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/** Used to escape characters for inclusion in compiled string literals. */
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var stringEscapes = {
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'\\': '\\',
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"'": "'",
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'\n': 'n',
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'\r': 'r',
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'\u2028': 'u2028',
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'\u2029': 'u2029'
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};
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/**
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* Used by `_.template` to escape characters for inclusion in compiled string literals.
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*
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* @private
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* @param {string} chr The matched character to escape.
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* @returns {string} Returns the escaped character.
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*/
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function escapeStringChar(chr) {
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return '\\' + stringEscapes[chr];
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}
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/**
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* Checks if `value` is object-like.
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*
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* @private
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is object-like, else `false`.
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*/
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function isObjectLike(value) {
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return !!value && typeof value == 'object';
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}
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/** Used for native method references. */
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var objectProto = Object.prototype;
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/** Used to check objects for own properties. */
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var hasOwnProperty = objectProto.hasOwnProperty;
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/**
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* Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
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* of values.
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*/
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var objToString = objectProto.toString;
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/**
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* Used by `_.template` to customize its `_.assign` use.
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*
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* **Note:** This function is like `assignDefaults` except that it ignores
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* inherited property values when checking if a property is `undefined`.
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*
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* @private
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* @param {*} objectValue The destination object property value.
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* @param {*} sourceValue The source object property value.
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* @param {string} key The key associated with the object and source values.
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* @param {Object} object The destination object.
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* @returns {*} Returns the value to assign to the destination object.
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*/
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function assignOwnDefaults(objectValue, sourceValue, key, object) {
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return (objectValue === undefined || !hasOwnProperty.call(object, key))
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? sourceValue
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: objectValue;
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}
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/**
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* A specialized version of `_.assign` for customizing assigned values without
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* support for argument juggling, multiple sources, and `this` binding `customizer`
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* functions.
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*
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* @private
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* @param {Object} object The destination object.
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* @param {Object} source The source object.
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* @param {Function} customizer The function to customize assigned values.
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* @returns {Object} Returns `object`.
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*/
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function assignWith(object, source, customizer) {
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var index = -1,
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props = keys(source),
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length = props.length;
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while (++index < length) {
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var key = props[index],
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value = object[key],
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result = customizer(value, source[key], key, object, source);
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if ((result === result ? (result !== value) : (value === value)) ||
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(value === undefined && !(key in object))) {
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object[key] = result;
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}
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}
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return object;
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}
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/**
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* The base implementation of `_.assign` without support for argument juggling,
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* multiple sources, and `customizer` functions.
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*
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* @private
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* @param {Object} object The destination object.
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* @param {Object} source The source object.
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* @returns {Object} Returns `object`.
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*/
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function baseAssign(object, source) {
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return source == null
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? object
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: baseCopy(source, keys(source), object);
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}
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/**
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* Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
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* `SyntaxError`, `TypeError`, or `URIError` object.
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*
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* @static
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* @memberOf _
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is an error object, else `false`.
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* @example
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*
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* _.isError(new Error);
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* // => true
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*
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* _.isError(Error);
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* // => false
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*/
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function isError(value) {
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return isObjectLike(value) && typeof value.message == 'string' && objToString.call(value) == errorTag;
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}
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/**
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* Creates a compiled template function that can interpolate data properties
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* in "interpolate" delimiters, HTML-escape interpolated data properties in
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* "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
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* properties may be accessed as free variables in the template. If a setting
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* object is provided it takes precedence over `_.templateSettings` values.
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*
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* **Note:** In the development build `_.template` utilizes
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* [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
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* for easier debugging.
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*
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* For more information on precompiling templates see
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* [lodash's custom builds documentation](https://lodash.com/custom-builds).
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*
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* For more information on Chrome extension sandboxes see
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* [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
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*
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* @static
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* @memberOf _
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* @category String
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* @param {string} [string=''] The template string.
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* @param {Object} [options] The options object.
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* @param {RegExp} [options.escape] The HTML "escape" delimiter.
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* @param {RegExp} [options.evaluate] The "evaluate" delimiter.
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* @param {Object} [options.imports] An object to import into the template as free variables.
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* @param {RegExp} [options.interpolate] The "interpolate" delimiter.
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* @param {string} [options.sourceURL] The sourceURL of the template's compiled source.
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* @param {string} [options.variable] The data object variable name.
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* @param- {Object} [otherOptions] Enables the legacy `options` param signature.
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* @returns {Function} Returns the compiled template function.
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* @example
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*
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* // using the "interpolate" delimiter to create a compiled template
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* var compiled = _.template('hello <%= user %>!');
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* compiled({ 'user': 'fred' });
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* // => 'hello fred!'
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*
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* // using the HTML "escape" delimiter to escape data property values
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* var compiled = _.template('<b><%- value %></b>');
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* compiled({ 'value': '<script>' });
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* // => '<b><script></b>'
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*
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* // using the "evaluate" delimiter to execute JavaScript and generate HTML
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* var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
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* compiled({ 'users': ['fred', 'barney'] });
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* // => '<li>fred</li><li>barney</li>'
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*
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* // using the internal `print` function in "evaluate" delimiters
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* var compiled = _.template('<% print("hello " + user); %>!');
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* compiled({ 'user': 'barney' });
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* // => 'hello barney!'
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*
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* // using the ES delimiter as an alternative to the default "interpolate" delimiter
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* var compiled = _.template('hello ${ user }!');
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* compiled({ 'user': 'pebbles' });
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* // => 'hello pebbles!'
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*
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* // using custom template delimiters
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* _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
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* var compiled = _.template('hello {{ user }}!');
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* compiled({ 'user': 'mustache' });
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* // => 'hello mustache!'
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*
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* // using backslashes to treat delimiters as plain text
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* var compiled = _.template('<%= "\\<%- value %\\>" %>');
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* compiled({ 'value': 'ignored' });
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* // => '<%- value %>'
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*
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* // using the `imports` option to import `jQuery` as `jq`
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* var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
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* var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
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* compiled({ 'users': ['fred', 'barney'] });
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* // => '<li>fred</li><li>barney</li>'
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*
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* // using the `sourceURL` option to specify a custom sourceURL for the template
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* var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
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* compiled(data);
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* // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
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*
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* // using the `variable` option to ensure a with-statement isn't used in the compiled template
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* var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
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* compiled.source;
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* // => function(data) {
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* // var __t, __p = '';
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* // __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
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* // return __p;
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* // }
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*
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* // using the `source` property to inline compiled templates for meaningful
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* // line numbers in error messages and a stack trace
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* fs.writeFileSync(path.join(cwd, 'jst.js'), '\
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* var JST = {\
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* "main": ' + _.template(mainText).source + '\
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* };\
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* ');
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*/
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function template(string, options, otherOptions) {
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// Based on John Resig's `tmpl` implementation (http://ejohn.org/blog/javascript-micro-templating/)
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// and Laura Doktorova's doT.js (https://github.com/olado/doT).
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var settings = templateSettings.imports._.templateSettings || templateSettings;
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if (otherOptions && isIterateeCall(string, options, otherOptions)) {
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options = otherOptions = undefined;
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}
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string = baseToString(string);
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options = assignWith(baseAssign({}, otherOptions || options), settings, assignOwnDefaults);
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var imports = assignWith(baseAssign({}, options.imports), settings.imports, assignOwnDefaults),
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importsKeys = keys(imports),
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importsValues = baseValues(imports, importsKeys);
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var isEscaping,
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isEvaluating,
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index = 0,
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interpolate = options.interpolate || reNoMatch,
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source = "__p += '";
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// Compile the regexp to match each delimiter.
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var reDelimiters = RegExp(
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(options.escape || reNoMatch).source + '|' +
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interpolate.source + '|' +
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(interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
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(options.evaluate || reNoMatch).source + '|$'
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, 'g');
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// Use a sourceURL for easier debugging.
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var sourceURL = 'sourceURL' in options ? '//# sourceURL=' + options.sourceURL + '\n' : '';
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string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
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interpolateValue || (interpolateValue = esTemplateValue);
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// Escape characters that can't be included in string literals.
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source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);
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// Replace delimiters with snippets.
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if (escapeValue) {
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isEscaping = true;
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source += "' +\n__e(" + escapeValue + ") +\n'";
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}
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if (evaluateValue) {
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isEvaluating = true;
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source += "';\n" + evaluateValue + ";\n__p += '";
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}
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if (interpolateValue) {
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source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
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}
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index = offset + match.length;
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// The JS engine embedded in Adobe products requires returning the `match`
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// string in order to produce the correct `offset` value.
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return match;
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});
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source += "';\n";
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// If `variable` is not specified wrap a with-statement around the generated
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// code to add the data object to the top of the scope chain.
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var variable = options.variable;
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if (!variable) {
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source = 'with (obj) {\n' + source + '\n}\n';
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}
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// Cleanup code by stripping empty strings.
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source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
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.replace(reEmptyStringMiddle, '$1')
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.replace(reEmptyStringTrailing, '$1;');
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// Frame code as the function body.
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source = 'function(' + (variable || 'obj') + ') {\n' +
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(variable
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? ''
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: 'obj || (obj = {});\n'
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) +
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"var __t, __p = ''" +
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(isEscaping
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? ', __e = _.escape'
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: ''
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) +
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(isEvaluating
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? ', __j = Array.prototype.join;\n' +
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"function print() { __p += __j.call(arguments, '') }\n"
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: ';\n'
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) +
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source +
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'return __p\n}';
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var result = attempt(function() {
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return Function(importsKeys, sourceURL + 'return ' + source).apply(undefined, importsValues);
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});
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// Provide the compiled function's source by its `toString` method or
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// the `source` property as a convenience for inlining compiled templates.
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result.source = source;
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if (isError(result)) {
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throw result;
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}
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return result;
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}
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/**
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* Attempts to invoke `func`, returning either the result or the caught error
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* object. Any additional arguments are provided to `func` when it is invoked.
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*
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* @static
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* @memberOf _
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* @category Utility
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* @param {Function} func The function to attempt.
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* @returns {*} Returns the `func` result or error object.
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* @example
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*
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* // avoid throwing errors for invalid selectors
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* var elements = _.attempt(function(selector) {
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* return document.querySelectorAll(selector);
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* }, '>_>');
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*
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* if (_.isError(elements)) {
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* elements = [];
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* }
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*/
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var attempt = restParam(function(func, args) {
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try {
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return func.apply(undefined, args);
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} catch(e) {
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return isError(e) ? e : new Error(e);
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}
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});
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module.exports = template;
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