970acd0ee4
FIXED: * Windows logging ADDED: * netx (and netx/inetcksum), the latter of which implements the Internet Checksum as a hash.Hash.
63 lines
1.1 KiB
Go
63 lines
1.1 KiB
Go
package inetcksum
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import (
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`io`
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)
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// New returns a new initialized [InetChecksum]. It will never panic.
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func New() (i *InetChecksum) {
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i = &InetChecksum{}
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_ = i.Aligned()
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return
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}
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/*
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NewFromBytes returns a new [InetChecksum] initialized with explicit bytes.
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b may be nil or 0-length; this will not cause an error.
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*/
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func NewFromBytes(b []byte) (i *InetChecksum, copied int, err error) {
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var cksum InetChecksum
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if b != nil && len(b) > 0 {
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if copied, err = cksum.Write(b); err != nil {
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return
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}
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_ = i.Aligned()
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} else {
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i = New()
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return
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}
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i = &cksum
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return
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}
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/*
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NewFromBuf returns an [InetChecksum] from a specified [io.Reader].
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buf may be nil. If it isn't, NewFromBuf will call [io.Copy] on buf.
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Note that this may exhaust your passed buf or advance its current seek position/offset,
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depending on its type.
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*/
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func NewFromBuf(buf io.Reader) (i *InetChecksum, copied int64, err error) {
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var cksum InetChecksum
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_ = i.Aligned()
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if buf != nil {
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if copied, err = io.Copy(&cksum, buf); err != nil {
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return
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}
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}
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i = &cksum
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return
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}
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