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.
54 lines
905 B
Go
54 lines
905 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 sparcAlignment = 4
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type sparc struct {
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ip uint32
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}
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func (c *sparc) Size() int { return sparcAlignment }
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func (c *sparc) 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) & ^(sparcAlignment-1); i += sparcAlignment {
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v := binary.BigEndian.Uint32(b[i:])
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if (b[i+0] == 0x40 && b[i+1]&0xc0 == 0) || (b[i+0] == 0x7f && b[i+1] >= 0xc0) {
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v <<= 2
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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 &= 0x01ffffff
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v -= uint32(1) << 24
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v ^= 0xff000000
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v >>= 2
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v |= 0x40000000
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}
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c.ip += uint32(sparcAlignment)
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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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// NewSPARCReader returns a new SPARC io.ReadCloser.
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func NewSPARCReader(_ []byte, _ uint64, readers []io.ReadCloser) (io.ReadCloser, error) {
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return newReader(readers, new(sparc))
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}
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