john-okeefe
46ae45ee92
Vendored the sevenzip package to eliminate dependency chain: - sevenzip -> go4.org -> 25+ Google/Cloud/telemetry packages Changes: - Added internal/sevenzip/ with full package source - Inlined go4.org/readerutil into multireaderat.go - Updated all internal imports to use bookhoard/internal/sevenzip - Preserved .cb7 comic archive support This reduces bloat by ~4.9 MB and removes unused telemetry dependencies while maintaining all functionality.
49 lines
777 B
Go
49 lines
777 B
Go
package bra
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import (
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"encoding/binary"
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"io"
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)
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const ppcAlignment = 4
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type ppc struct {
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ip uint32
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}
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func (c *ppc) Size() int { return ppcAlignment }
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func (c *ppc) Convert(b []byte, encoding bool) int {
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if len(b) < c.Size() {
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return 0
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}
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var i int
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for i = 0; i < len(b) & ^(ppcAlignment-1); i += ppcAlignment {
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v := binary.BigEndian.Uint32(b[i:])
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if b[i+0]&0xfc == 0x48 && b[i+3]&3 == 1 {
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if encoding {
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v += c.ip
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} else {
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v -= c.ip
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}
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v &= 0x03ffffff
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v |= 0x48000000
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}
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c.ip += uint32(ppcAlignment)
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binary.BigEndian.PutUint32(b[i:], v)
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}
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return i
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}
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// NewPPCReader returns a new PPC io.ReadCloser.
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func NewPPCReader(_ []byte, _ uint64, readers []io.ReadCloser) (io.ReadCloser, error) {
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return newReader(readers, new(ppc))
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}
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