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Diffstat (limited to 'node_modules/jade/runtime.js')
-rw-r--r-- | node_modules/jade/runtime.js | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/node_modules/jade/runtime.js b/node_modules/jade/runtime.js new file mode 100644 index 000000000..0f5490778 --- /dev/null +++ b/node_modules/jade/runtime.js @@ -0,0 +1,179 @@ + +jade = (function(exports){ +/*! + * Jade - runtime + * Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca> + * MIT Licensed + */ + +/** + * Lame Array.isArray() polyfill for now. + */ + +if (!Array.isArray) { + Array.isArray = function(arr){ + return '[object Array]' == Object.prototype.toString.call(arr); + }; +} + +/** + * Lame Object.keys() polyfill for now. + */ + +if (!Object.keys) { + Object.keys = function(obj){ + var arr = []; + for (var key in obj) { + if (obj.hasOwnProperty(key)) { + arr.push(key); + } + } + return arr; + } +} + +/** + * Merge two attribute objects giving precedence + * to values in object `b`. Classes are special-cased + * allowing for arrays and merging/joining appropriately + * resulting in a string. + * + * @param {Object} a + * @param {Object} b + * @return {Object} a + * @api private + */ + +exports.merge = function merge(a, b) { + var ac = a['class']; + var bc = b['class']; + + if (ac || bc) { + ac = ac || []; + bc = bc || []; + if (!Array.isArray(ac)) ac = [ac]; + if (!Array.isArray(bc)) bc = [bc]; + ac = ac.filter(nulls); + bc = bc.filter(nulls); + a['class'] = ac.concat(bc).join(' '); + } + + for (var key in b) { + if (key != 'class') { + a[key] = b[key]; + } + } + + return a; +}; + +/** + * Filter null `val`s. + * + * @param {Mixed} val + * @return {Mixed} + * @api private + */ + +function nulls(val) { + return val != null; +} + +/** + * Render the given attributes object. + * + * @param {Object} obj + * @param {Object} escaped + * @return {String} + * @api private + */ + +exports.attrs = function attrs(obj, escaped){ + var buf = [] + , terse = obj.terse; + + delete obj.terse; + var keys = Object.keys(obj) + , len = keys.length; + + if (len) { + buf.push(''); + for (var i = 0; i < len; ++i) { + var key = keys[i] + , val = obj[key]; + + if ('boolean' == typeof val || null == val) { + if (val) { + terse + ? buf.push(key) + : buf.push(key + '="' + key + '"'); + } + } else if (0 == key.indexOf('data') && 'string' != typeof val) { + buf.push(key + "='" + JSON.stringify(val) + "'"); + } else if ('class' == key && Array.isArray(val)) { + buf.push(key + '="' + exports.escape(val.join(' ')) + '"'); + } else if (escaped && escaped[key]) { + buf.push(key + '="' + exports.escape(val) + '"'); + } else { + buf.push(key + '="' + val + '"'); + } + } + } + + return buf.join(' '); +}; + +/** + * Escape the given string of `html`. + * + * @param {String} html + * @return {String} + * @api private + */ + +exports.escape = function escape(html){ + return String(html) + .replace(/&(?!(\w+|\#\d+);)/g, '&') + .replace(/</g, '<') + .replace(/>/g, '>') + .replace(/"/g, '"'); +}; + +/** + * Re-throw the given `err` in context to the + * the jade in `filename` at the given `lineno`. + * + * @param {Error} err + * @param {String} filename + * @param {String} lineno + * @api private + */ + +exports.rethrow = function rethrow(err, filename, lineno){ + if (!filename) throw err; + + var context = 3 + , str = require('fs').readFileSync(filename, 'utf8') + , lines = str.split('\n') + , start = Math.max(lineno - context, 0) + , end = Math.min(lines.length, lineno + context); + + // 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 || 'Jade') + ':' + lineno + + '\n' + context + '\n\n' + err.message; + throw err; +}; + + return exports; + +})({}); |