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Simplify API a bit

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This commit is contained in:
Kovid Goyal 2023-07-03 08:16:38 +05:30
parent 2801b934fb
commit 278a3986e5
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GPG key ID: 06BC317B515ACE7C
1 changed files with 14 additions and 12 deletions
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26
tools/rsync/api.go
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@ -94,6 +94,17 @@ func (self *Api) read_signature_blocks(data []byte) (consumed int) {
return
}
func (self *Differ) finish_signature_data() (err error) {
if len(self.unconsumed_signature_data) > 0 {
return fmt.Errorf("There were %d leftover bytes in the signature data", len(self.unconsumed_signature_data))
}
self.unconsumed_signature_data = nil
if self.rsync.UniqueHasher == nil {
return fmt.Errorf("No header was found in the signature data")
}
return
}
func (self *Patcher) update_delta(data []byte) (consumed int, err error) {
op := Operation{}
for len(data) > 0 {
@ -179,6 +190,9 @@ func (self *Patcher) CreateSignature(src io.Reader, callback func([]byte) error)
// Create a serialized delta based on the previously loaded signature
func (self *Differ) CreateDelta(src io.Reader, output_callback func(string) error) (err error) {
if err = self.finish_signature_data(); err != nil {
return
}
if len(self.signature) == 0 {
return fmt.Errorf("Cannot call CreateDelta() before loading a signature")
}
@ -213,18 +227,6 @@ func (self *Differ) AddSignatureData(data []byte) (err error) {
return nil
}
// Finish adding external signature data
func (self *Differ) FinishSignatureData() (err error) {
if len(self.unconsumed_signature_data) > 0 {
return fmt.Errorf("There were %d leftover bytes in the signature data", len(self.unconsumed_signature_data))
}
self.unconsumed_signature_data = nil
if self.rsync.UniqueHasher == nil {
return fmt.Errorf("No header was found in the signature data")
}
return
}
// Use to calculate a delta based on a supplied signature, via AddSignatureData
func NewDiffer() *Differ {
return &Differ{}