Change the name of the hashCore method to SumSectionReader so that it… (

#13)

* Change the name of the hashCore method to SumSectionReader so that it can be used by external callers.

* Retaining hashCore method

---------

Co-authored-by: Andy Gorman <andyg@apacesystems.com>

imohash.go

@@ -59,6 +59,12 @@ func Sum(data []byte) [Size]byte {
 	return imo.Sum(data)
 }
 
+// SumSectionReader hashes a SectionReader using default sample parameters.
+func SumSectionReader(sr *io.SectionReader) ([Size]byte, error) {
+	imo := New()
+	return imo.hashCore(sr)
+}
+
 // Sum hashes a byte slice using the ImoHash parameters.
 func (imo *ImoHash) Sum(data []byte) [Size]byte {
 	sr := io.NewSectionReader(bytes.NewReader(data), 0, int64(len(data)))
@@ -87,6 +93,11 @@ func (imo *ImoHash) SumFile(filename string) ([Size]byte, error) {
 	return imo.hashCore(sr)
 }
 
+// SumSectionReader hashes a SectionReader using the ImoHash parameters.
+func (imo *ImoHash) SumSectionReader(f *io.SectionReader) ([Size]byte, error) {
+	return imo.hashCore(f)
+}
+
 // hashCore hashes a SectionReader using the ImoHash parameters.
 func (imo *ImoHash) hashCore(f *io.SectionReader) ([Size]byte, error) {
 	var result [Size]byte