43 lines
965 B
JavaScript
43 lines
965 B
JavaScript
var fs = require('graceful-fs')
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var BUF_LENGTH = 64 * 1024
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var _buff = new Buffer(BUF_LENGTH)
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function copyFileSync (srcFile, destFile, options) {
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var clobber = options.clobber
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var preserveTimestamps = options.preserveTimestamps
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if (fs.existsSync(destFile)) {
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if (clobber) {
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fs.unlinkSync(destFile)
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} else {
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var err = new Error('EEXIST: ' + destFile + ' already exists.')
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err.code = 'EEXIST'
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err.errno = -17
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err.path = destFile
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throw err
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}
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}
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var fdr = fs.openSync(srcFile, 'r')
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var stat = fs.fstatSync(fdr)
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var fdw = fs.openSync(destFile, 'w', stat.mode)
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var bytesRead = 1
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var pos = 0
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while (bytesRead > 0) {
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bytesRead = fs.readSync(fdr, _buff, 0, BUF_LENGTH, pos)
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fs.writeSync(fdw, _buff, 0, bytesRead)
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pos += bytesRead
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}
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if (preserveTimestamps) {
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fs.futimesSync(fdw, stat.atime, stat.mtime)
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}
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fs.closeSync(fdr)
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fs.closeSync(fdw)
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}
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module.exports = copyFileSync
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