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https://github.com/ceph/ceph-csi.git
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bec6090996
Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
103 lines
3.0 KiB
Go
103 lines
3.0 KiB
Go
// Copyright 2018 Klaus Post. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Based on work Copyright (c) 2013, Yann Collet, released under BSD License.
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package huff0
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// bitWriter will write bits.
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// First bit will be LSB of the first byte of output.
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type bitWriter struct {
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bitContainer uint64
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nBits uint8
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out []byte
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}
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// addBits16Clean will add up to 16 bits. value may not contain more set bits than indicated.
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// It will not check if there is space for them, so the caller must ensure that it has flushed recently.
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func (b *bitWriter) addBits16Clean(value uint16, bits uint8) {
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b.bitContainer |= uint64(value) << (b.nBits & 63)
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b.nBits += bits
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}
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// encSymbol will add up to 16 bits. value may not contain more set bits than indicated.
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// It will not check if there is space for them, so the caller must ensure that it has flushed recently.
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func (b *bitWriter) encSymbol(ct cTable, symbol byte) {
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enc := ct[symbol]
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b.bitContainer |= uint64(enc.val) << (b.nBits & 63)
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if false {
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if enc.nBits == 0 {
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panic("nbits 0")
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}
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}
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b.nBits += enc.nBits
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}
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// encTwoSymbols will add up to 32 bits. value may not contain more set bits than indicated.
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// It will not check if there is space for them, so the caller must ensure that it has flushed recently.
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func (b *bitWriter) encTwoSymbols(ct cTable, av, bv byte) {
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encA := ct[av]
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encB := ct[bv]
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sh := b.nBits & 63
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combined := uint64(encA.val) | (uint64(encB.val) << (encA.nBits & 63))
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b.bitContainer |= combined << sh
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if false {
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if encA.nBits == 0 {
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panic("nbitsA 0")
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}
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if encB.nBits == 0 {
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panic("nbitsB 0")
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}
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}
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b.nBits += encA.nBits + encB.nBits
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}
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// encFourSymbols adds up to 32 bits from four symbols.
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// It will not check if there is space for them,
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// so the caller must ensure that b has been flushed recently.
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func (b *bitWriter) encFourSymbols(encA, encB, encC, encD cTableEntry) {
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bitsA := encA.nBits
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bitsB := bitsA + encB.nBits
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bitsC := bitsB + encC.nBits
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bitsD := bitsC + encD.nBits
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combined := uint64(encA.val) |
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(uint64(encB.val) << (bitsA & 63)) |
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(uint64(encC.val) << (bitsB & 63)) |
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(uint64(encD.val) << (bitsC & 63))
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b.bitContainer |= combined << (b.nBits & 63)
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b.nBits += bitsD
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}
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// flush32 will flush out, so there are at least 32 bits available for writing.
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func (b *bitWriter) flush32() {
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if b.nBits < 32 {
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return
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}
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b.out = append(b.out,
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byte(b.bitContainer),
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byte(b.bitContainer>>8),
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byte(b.bitContainer>>16),
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byte(b.bitContainer>>24))
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b.nBits -= 32
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b.bitContainer >>= 32
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}
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// flushAlign will flush remaining full bytes and align to next byte boundary.
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func (b *bitWriter) flushAlign() {
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nbBytes := (b.nBits + 7) >> 3
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for i := uint8(0); i < nbBytes; i++ {
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b.out = append(b.out, byte(b.bitContainer>>(i*8)))
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}
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b.nBits = 0
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b.bitContainer = 0
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}
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// close will write the alignment bit and write the final byte(s)
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// to the output.
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func (b *bitWriter) close() {
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// End mark
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b.addBits16Clean(1, 1)
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// flush until next byte.
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b.flushAlign()
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}
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