/*! * Express - Utils * Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca> * MIT Licensed */ /** * Check if `path` looks absolute. * * @param {String} path * @return {Boolean} * @api private */ exports.isAbsolute = function(path){ if ('/' == path[0]) return true; if (':' == path[1] && '\\' == path[2]) return true;}; /** * Merge object `b` with `a` giving precedence to * values in object `a`. * * @param {Object} a * @param {Object} b * @return {Object} a * @api private */ exports.union = function(a, b){ if (a && b) { var keys = Object.keys(b) , len = keys.length , key; for (var i = 0; i < len; ++i) { key = keys[i]; if (!a.hasOwnProperty(key)) { a[key] = b[key]; } } } return a;}; /** * Flatten the given `arr`. * * @param {Array} arr * @return {Array} * @api private */ exports.flatten = function(arr, ret){ var ret = ret || [] , len = arr.length; for (var i = 0; i < len; ++i) { if (Array.isArray(arr[i])) { exports.flatten(arr[i], ret); } else { ret.push(arr[i]); } } return ret;}; /** * Parse mini markdown implementation. * The following conversions are supported, * primarily for the "flash" middleware: * * _foo_ or *foo* become <em>foo</em> * __foo__ or **foo** become <strong>foo</strong> * [A](B) becomes <a href="B">A</a> * * @param {String} str * @return {String} * @api private */ exports.miniMarkdown = function(str){ return String(str) .replace(/(__|\*\*)(.*?)\1/g, '<strong>$2</strong>') .replace(/(_|\*)(.*?)\1/g, '<em>$2</em>') .replace(/\[([^\]]+)\]\(([^)]+)\)/g, '<a href="$2">$1</a>');}; /** * Escape special characters in the given string of html. * * @param {String} html * @return {String} * @api private */ exports.escape = function(html) { return String(html) .replace(/&/g, '&') .replace(/"/g, '"') .replace(/</g, '<') .replace(/>/g, '>');}; /** * Parse "Range" header `str` relative to the given file `size`. * * @param {Number} size * @param {String} str * @return {Array} * @api private */ exports.parseRange = function(size, str){ var valid = true; var arr = str.substr(6).split(',').map(function(range){ var range = range.split('-') , start = parseInt(range[0], 10) , end = parseInt(range[1], 10); // -500 if (isNaN(start)) { start = size - end; end = size - 1; // 500- } else if (isNaN(end)) { end = size - 1; } // Invalid if (isNaN(start) || isNaN(end) || start > end) valid = false; return { start: start, end: end }; }); return valid ? arr : undefined;}; /** * Fast alternative to `Array.prototype.slice.call()`. * * @param {Arguments} args * @param {Number} n * @return {Array} * @api public */ exports.toArray = function(args, i){ var arr = [] , len = args.length , i = i || 0; for (; i < len; ++i) arr.push(args[i]); return arr;};
/*!
* Express - Utils
* Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca>
* MIT Licensed
*/
/**
* Check if `path` looks absolute.
*
* @param {String} path
* @return {Boolean}
* @api private
*/
exports.isAbsolute = function(path){
if ('/' == path[0]) return true;
if (':' == path[1] && '\\' == path[2]) return true;
};
/**
* Merge object `b` with `a` giving precedence to
* values in object `a`.
*
* @param {Object} a
* @param {Object} b
* @return {Object} a
* @api private
*/
exports.union = function(a, b){
if (a && b) {
var keys = Object.keys(b)
, len = keys.length
, key;
for (var i = 0; i < len; ++i) {
key = keys[i];
if (!a.hasOwnProperty(key)) {
a[key] = b[key];
}
}
}
return a;
};
/**
* Flatten the given `arr`.
*
* @param {Array} arr
* @return {Array}
* @api private
*/
exports.flatten = function(arr, ret){
var ret = ret || []
, len = arr.length;
for (var i = 0; i < len; ++i) {
if (Array.isArray(arr[i])) {
exports.flatten(arr[i], ret);
} else {
ret.push(arr[i]);
}
}
return ret;
};
/**
* Parse mini markdown implementation.
* The following conversions are supported,
* primarily for the "flash" middleware:
*
* _foo_ or *foo* become <em>foo</em>
* __foo__ or **foo** become <strong>foo</strong>
* [A](B) becomes <a href="B">A</a>
*
* @param {String} str
* @return {String}
* @api private
*/
exports.miniMarkdown = function(str){
return String(str)
.replace(/(__|\*\*)(.*?)\1/g, '<strong>$2</strong>')
.replace(/(_|\*)(.*?)\1/g, '<em>$2</em>')
.replace(/\[([^\]]+)\]\(([^)]+)\)/g, '<a href="$2">$1</a>');
};
/**
* Escape special characters in the given string of html.
*
* @param {String} html
* @return {String}
* @api private
*/
exports.escape = function(html) {
return String(html)
.replace(/&/g, '&')
.replace(/"/g, '"')
.replace(/</g, '<')
.replace(/>/g, '>');
};
/**
* Parse "Range" header `str` relative to the given file `size`.
*
* @param {Number} size
* @param {String} str
* @return {Array}
* @api private
*/
exports.parseRange = function(size, str){
var valid = true;
var arr = str.substr(6).split(',').map(function(range){
var range = range.split('-')
, start = parseInt(range[0], 10)
, end = parseInt(range[1], 10);
// -500
if (isNaN(start)) {
start = size - end;
end = size - 1;
// 500-
} else if (isNaN(end)) {
end = size - 1;
}
// Invalid
if (isNaN(start) || isNaN(end) || start > end) valid = false;
return { start: start, end: end };
});
return valid ? arr : undefined;
};
/**
* Fast alternative to `Array.prototype.slice.call()`.
*
* @param {Arguments} args
* @param {Number} n
* @return {Array}
* @api public
*/
exports.toArray = function(args, i){
var arr = []
, len = args.length
, i = i || 0;
for (; i < len; ++i) arr.push(args[i]);
return arr;
};