copy-file-sync.js
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var fs = require('graceful-fs')
var BUF_LENGTH = 64 * 1024
var _buff = new Buffer(BUF_LENGTH)
function copyFileSync (srcFile, destFile, options) {
var clobber = options.clobber
var preserveTimestamps = options.preserveTimestamps
if (fs.existsSync(destFile)) {
if (clobber) {
fs.unlinkSync(destFile)
} else {
var err = new Error('EEXIST: ' + destFile + ' already exists.')
err.code = 'EEXIST'
err.errno = -17
err.path = destFile
throw err
}
}
var fdr = fs.openSync(srcFile, 'r')
var stat = fs.fstatSync(fdr)
var fdw = fs.openSync(destFile, 'w', stat.mode)
var bytesRead = 1
var 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