You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
982 B
42 lines
982 B
2 years ago
|
'use strict'
|
||
|
|
|
||
|
|
const fs = require('graceful-fs')
|
||
|
|
|
||
|
|
const BUF_LENGTH = 64 * 1024
|
||
|
|
const _buff = require('../util/buffer')(BUF_LENGTH)
|
||
|
|
|
||
|
|
function copyFileSync (srcFile, destFile, options) {
|
||
|
|
const overwrite = options.overwrite
|
||
|
|
const errorOnExist = options.errorOnExist
|
||
|
|
const preserveTimestamps = options.preserveTimestamps
|
||
|
|
|
||
|
|
if (fs.existsSync(destFile)) {
|
||
|
|
if (overwrite) {
|
||
|
|
fs.unlinkSync(destFile)
|
||
|
|
} else if (errorOnExist) {
|
||
|
|
throw new Error(`${destFile} already exists`)
|
||
|
|
} else return
|
||
|
|
}
|
||
|
|
|
||
|
|
const fdr = fs.openSync(srcFile, 'r')
|
||
|
|
const stat = fs.fstatSync(fdr)
|
||
|
|
const fdw = fs.openSync(destFile, 'w', stat.mode)
|
||
|
|
let bytesRead = 1
|
||
|
|
let pos = 0
|
||
|
|
|
||
|
|
while (bytesRead > 0) {
|
||
|
|
bytesRead = fs.readSync(fdr, _buff, 0, BUF_LENGTH, pos)
|
||
|
|
fs.writeSync(fdw, _buff, 0, bytesRead)
|
||
|
|
pos += bytesRead
|
||
|
|
}
|
||
|
|
|
||
|
|
if (preserveTimestamps) {
|
||
|
|
fs.futimesSync(fdw, stat.atime, stat.mtime)
|
||
|
|
}
|
||
|
|
|
||
|
|
fs.closeSync(fdr)
|
||
|
|
fs.closeSync(fdw)
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = copyFileSync
|