发布于 2016-08-24 03:35:04 | 237 次阅读 | 评论: 0 | 来源: 网友投递
这篇文章主要介绍了node.js中的path.normalize方法使用说明,本文介绍了path.normalize的方法说明、语法、使用实例和实现源码,需要的朋友可以参考下方法说明:
输出规范格式的path字符串。
语法:
path.normalize(p)
由于该方法属于path模块,使用前需要引入path模块(var path= require(“path”) )
例子:
path.normalize('/foo/bar//baz/asdf/quux/..')
// returns
'/foo/bar/baz/asdf'
源码:
// windows version
exports.normalize = function(path) {
var result = splitDeviceRe.exec(path),
device = result[1] || '',
isUnc = device && device.charAt(1) !== ':',
isAbsolute = exports.isAbsolute(path),
tail = result[3],
trailingSlash = /[\\\/]$/.test(tail);
// If device is a drive letter, we'll normalize to lower case.
if (device && device.charAt(1) === ':') {
device = device[0].toLowerCase() + device.substr(1);
}
// Normalize the tail path
tail = normalizeArray(tail.split(/[\\\/]+/).filter(function(p) {
return !!p;
}), !isAbsolute).join('\\');
if (!tail && !isAbsolute) {
tail = '.';
}
if (tail && trailingSlash) {
tail += '\\';
}
// Convert slashes to backslashes when `device` points to an UNC root.
// Also squash multiple slashes into a single one where appropriate.
if (isUnc) {
device = normalizeUNCRoot(device);
}
return device + (isAbsolute ? '\\' : '') + tail;
};