37 lines
605 B
Go
37 lines
605 B
Go
package moneroutil
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import (
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"fmt"
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"io"
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)
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func ReadVarInt(buf io.Reader) (result uint64, err error) {
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b := make([]byte, 1)
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var r uint64
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var n int
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for i := 0; ; i++ {
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n, err = buf.Read(b)
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if err != nil {
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return
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}
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if n != 1 {
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err = fmt.Errorf("Buffer ended prematurely for varint")
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return
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}
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r += (uint64(b[0]) & 0x7f) << uint(i*7)
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if uint64(b[0])&0x80 == 0 {
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break
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}
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}
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result = r
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return
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}
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func Uint64ToBytes(num uint64) (result []byte) {
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for ; num >= 0x80; num >>= 7 {
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result = append(result, byte((num&0x7f)|0x80))
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}
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result = append(result, byte(num))
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return
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}
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