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Add some API docs

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This commit is contained in:
Kovid Goyal
2023-07-06 00:06:26 +05:30
parent 77d5fe1be5
commit 579ab8551e
1 changed files with 9 additions and 5 deletions
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14
tools/rsync/api.go
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@@ -178,16 +178,20 @@ func write_block_hash(output []byte, bl BlockHash) []byte {
return output
}
// Create a signature for the data source in src
func (self *Patcher) CreateSignatureIterator(src io.Reader) func([]byte) ([]byte, error) {
// Append the next signature to the provided slice and return the resulting slice. Data is written to the slice iff err == nil.
// When no more signature data is available, err = io.EOF and the unmodified slice is returned.
type SignatureIterator = func([]byte) ([]byte, error)
// Create a signature for the data source in src.
func (self *Patcher) CreateSignatureIterator(src io.Reader) SignatureIterator {
var it func() (BlockHash, error)
finished := false
return func(output []byte) ([]byte, error) {
if finished {
return output, nil
return output, io.EOF
}
var b []byte
if it == nil {
if it == nil { // write signature header
var b []byte
it = self.rsync.CreateSignatureIterator(src)
output, b = ensure_size(output, 12)
bin.PutUint32(b, 0)