nodejs 批量编译less 文件为css

http://www.html-js.com/article/1359

我们在用less时，有时会有很多less块，一个一个手动编译很麻烦，使用下面的代码，可以一次性递归编译 在项目less文件目录，新建个js文件。粘贴代码如下

var fs = require('fs'),
path = require('path'),
exec = require('child_process').exec,
sourcePath, targetPath;

//获取命令行中的路径
process.argv.forEach(function (val, index, array) {
if (index == 2) {
sourcePath = val;
}
if (index == 3) {
targetPath = val;
}
})

var lessc = function (rootPath, targetPath) {
//取得当前绝对路径
rootPath = path.resolve(rootPath);
//目标路径绝对路径
targetPath = path.resolve(targetPath);
//判断目录是否存在
fs.exists(rootPath, function (exists) {
//路径存在
if (exists) {
//获取当前路径下的所有文件和路径名
var childArray = fs.readdirSync(rootPath);
if (childArray.length) {
for (var i = 0; i < childArray.length; i++) {
var currentFilePath = path.resolve(rootPath, childArray[i]);
var currentTargetPath = path.resolve(targetPath, childArray[i])
//读取文件信息
var stats = fs.statSync(currentFilePath);
//若是目录则递归调用
if (stats.isDirectory()) {
lessc(currentFilePath, currentTargetPath);
} else {
//判断文件是否为less文件
if (path.extname(currentFilePath) === ".less") {
var newFilePath = path.resolve(targetPath, path.basename(currentFilePath, '.less') + ".css");
if (!fs.existsSync(targetPath)) {
fs.mkdirSync(targetPath);
}
console.log(newFilePath);
exec("lessc -x " + currentFilePath + " > " + newFilePath);
}
}
}
}
} else {
console.log("directory is not exists");
}
});
}

lessc('./', './css/');

然后运行node