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index.js
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45 lines (42 loc) · 1.17 KB
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const fs = require('fs');
const util = require('util');
const path = require('path');
const co = require('coroutine');
const assert = require('assert');
const mkdirp = require('@fibjs/mkdirp');
const readdir = require('@fibjs/fs-readdir-recursive');
const limit = 20;
module.exports = (src, target, processor) => {
assert(fs.exists(src), 'the source path must exists!');
const dirs = readdir(src).map(dir => {
return {
src: path.join(src, dir),
target: path.join(target, dir),
};
});
if (processor) {
assert(util.isFunction(processor), 'the processor must be Function');
co.parallel(dirs, dir => {
let data = fs.readFile(dir.src);
let res = processor(data, dir);
if (res === false) {
return;
} else if (res !== true) {
data = res;
}
const dirname = path.dirname(dir.target);
if (!fs.exists(dirname)) {
mkdirp(dirname);
}
fs.writeFile(dir.target, data);
}, limit);
} else {
co.parallel(dirs, dir => {
const dirname = path.dirname(dir.target);
if (!fs.exists(dirname)) {
mkdirp(dirname);
}
fs.copy(dir.src, dir.target);
}, limit);
}
};