Файл: error-kitty/node_modules/ejs/lib/ejs.js
Строк: 397
<?php
/*!
* EJS
* Copyright(c) 2012 TJ Holowaychuk <tj@vision-media.ca>
* MIT Licensed
*/
/**
* Module dependencies.
*/
var utils = require('./utils')
, path = require('path')
, dirname = path.dirname
, extname = path.extname
, join = path.join
, fs = require('fs')
, read = fs.readFileSync;
/**
* Filters.
*
* @type Object
*/
var filters = exports.filters = require('./filters');
/**
* Intermediate js cache.
*
* @type Object
*/
var cache = {};
/**
* Clear intermediate js cache.
*
* @api public
*/
exports.clearCache = function(){
cache = {};
};
/**
* Translate filtered code into function calls.
*
* @param {String} js
* @return {String}
* @api private
*/
function filtered(js) {
return js.substr(1).split('|').reduce(function(js, filter){
var parts = filter.split(':')
, name = parts.shift()
, args = parts.join(':') || '';
if (args) args = ', ' + args;
return 'filters.' + name + '(' + js + args + ')';
});
};
/**
* Re-throw the given `err` in context to the
* `str` of ejs, `filename`, and `lineno`.
*
* @param {Error} err
* @param {String} str
* @param {String} filename
* @param {String} lineno
* @api private
*/
function rethrow(err, str, filename, lineno){
var lines = str.split('n')
, start = Math.max(lineno - 3, 0)
, end = Math.min(lines.length, lineno + 3);
// 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 + 'nn'
+ err.message;
throw err;
}
/**
* Parse the given `str` of ejs, returning the function body.
*
* @param {String} str
* @return {String}
* @api public
*/
var parse = exports.parse = function(str, options){
var options = options || {}
, open = options.open || exports.open || '<%'
, close = options.close || exports.close || '%>'
, filename = options.filename
, compileDebug = options.compileDebug !== false
, buf = "";
buf += 'var buf = [];';
if (false !== options._with) buf += 'nwith (locals || {}) { (function(){ ';
buf += 'n buf.push('';
var lineno = 1;
var consumeEOL = false;
for (var i = 0, len = str.length; i < len; ++i) {
var stri = str[i];
if (str.slice(i, open.length + i) == open) {
i += open.length
var prefix, postfix, line = (compileDebug ? '__stack.lineno=' : '') + lineno;
switch (str[i]) {
case '=':
prefix = "', escape((" + line + ', ';
postfix = ")), '";
++i;
break;
case '-':
prefix = "', (" + line + ', ';
postfix = "), '";
++i;
break;
default:
prefix = "');" + line + ';';
postfix = "; buf.push('";
}
var end = str.indexOf(close, i);
if (end < 0){
throw new Error('Could not find matching close tag "' + close + '".');
}
var js = str.substring(i, end)
, start = i
, include = null
, n = 0;
if ('-' == js[js.length-1]){
js = js.substring(0, js.length - 2);
consumeEOL = true;
}
if (0 == js.trim().indexOf('include')) {
var name = js.trim().slice(7).trim();
if (!filename) throw new Error('filename option is required for includes');
var path = resolveInclude(name, filename);
include = read(path, 'utf8');
include = exports.parse(include, { filename: path, _with: false, open: open, close: close, compileDebug: compileDebug });
buf += "' + (function(){" + include + "})() + '";
js = '';
}
while (~(n = js.indexOf("n", n))) n++, lineno++;
if (js.substr(0, 1) == ':') js = filtered(js);
if (js) {
if (js.lastIndexOf('//') > js.lastIndexOf('n')) js += 'n';
buf += prefix;
buf += js;
buf += postfix;
}
i += end - start + close.length - 1;
} else if (stri == "\") {
buf += "\\";
} else if (stri == "'") {
buf += "\'";
} else if (stri == "r") {
// ignore
} else if (stri == "n") {
if (consumeEOL) {
consumeEOL = false;
} else {
buf += "\n";
lineno++;
}
} else {
buf += stri;
}
}
if (false !== options._with) buf += "'); })();n} nreturn buf.join('');";
else buf += "');nreturn buf.join('');";
return buf;
};
/**
* Compile the given `str` of ejs into a `Function`.
*
* @param {String} str
* @param {Object} options
* @return {Function}
* @api public
*/
var compile = exports.compile = function(str, options){
options = options || {};
var escape = options.escape || utils.escape;
var input = JSON.stringify(str)
, compileDebug = options.compileDebug !== false
, client = options.client
, filename = options.filename
? JSON.stringify(options.filename)
: 'undefined';
if (compileDebug) {
// Adds the fancy stack trace meta info
str = [
'var __stack = { lineno: 1, input: ' + input + ', filename: ' + filename + ' };',
rethrow.toString(),
'try {',
exports.parse(str, options),
'} catch (err) {',
' rethrow(err, __stack.input, __stack.filename, __stack.lineno);',
'}'
].join("n");
} else {
str = exports.parse(str, options);
}
if (options.debug) console.log(str);
if (client) str = 'escape = escape || ' + escape.toString() + ';n' + str;
try {
var fn = new Function('locals, filters, escape, rethrow', str);
} catch (err) {
if ('SyntaxError' == err.name) {
err.message += options.filename
? ' in ' + filename
: ' while compiling ejs';
}
throw err;
}
if (client) return fn;
return function(locals){
return fn.call(this, locals, filters, escape, rethrow);
}
};
/**
* Render the given `str` of ejs.
*
* Options:
*
* - `locals` Local variables object
* - `cache` Compiled functions are cached, requires `filename`
* - `filename` Used by `cache` to key caches
* - `scope` Function execution context
* - `debug` Output generated function body
* - `open` Open tag, defaulting to "<%"
* - `close` Closing tag, defaulting to "%>"
*
* @param {String} str
* @param {Object} options
* @return {String}
* @api public
*/
exports.render = function(str, options){
var fn
, options = options || {};
if (options.cache) {
if (options.filename) {
fn = cache[options.filename] || (cache[options.filename] = compile(str, options));
} else {
throw new Error('"cache" option requires "filename".');
}
} else {
fn = compile(str, options);
}
options.__proto__ = options.locals;
return fn.call(options.scope, options);
};
/**
* Render an EJS file at the given `path` and callback `fn(err, str)`.
*
* @param {String} path
* @param {Object|Function} options or callback
* @param {Function} fn
* @api public
*/
exports.renderFile = function(path, options, fn){
var key = path + ':string';
if ('function' == typeof options) {
fn = options, options = {};
}
options.filename = path;
var str;
try {
str = options.cache
? cache[key] || (cache[key] = read(path, 'utf8'))
: read(path, 'utf8');
} catch (err) {
fn(err);
return;
}
fn(null, exports.render(str, options));
};
/**
* Resolve include `name` relative to `filename`.
*
* @param {String} name
* @param {String} filename
* @return {String}
* @api private
*/
function resolveInclude(name, filename) {
var path = join(dirname(filename), name);
var ext = extname(name);
if (!ext) path += '.ejs';
return path;
}
// express support
exports.__express = exports.renderFile;
/**
* Expose to require().
*/
if (require.extensions) {
require.extensions['.ejs'] = function (module, filename) {
filename = filename || module.filename;
var options = { filename: filename, client: true }
, template = fs.readFileSync(filename).toString()
, fn = compile(template, options);
module._compile('module.exports = ' + fn.toString() + ';', filename);
};
} else if (require.registerExtension) {
require.registerExtension('.ejs', function(src) {
return compile(src, {});
});
}
?>