Ihar Katkavets
23 lines
684 B
Markdown
23 lines
684 B
Markdown
# File Input Stream
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`FileInputStream` is used for reading data from a file. It can be added to a ciphers chain
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```swift
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let inputFileStream = FileInputStream(with: try! FileHandle(forReadingFrom: originalFileURL))
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try inputFileStream.open()
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```
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```swift
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guard let inputFileStream = FileInputStream(with: originalFileURL) else {
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// file not exist
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return
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}
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try inputFileStream.open()
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```
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```swift
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let tmpBufferLen = 1<<16 // 65KB buffer
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var tmpBuffer = Array<UInt8>(repeating: 0, count: tmpBufferLen)
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while inputFileStream.hasBytesAvailable {
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let readLen = inputFileStream.read(&tmpBuffer, maxLength: tmpBufferLen)
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try compressingStream.write(tmpBuffer, length: readLen)
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}
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```
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