v1.9.0

ADD:
* `iox` subpackage

FIX:
* `logging` now has a way to return logWritier directly
* added significant `io.*` interface compat to logWriter -- allowing a `logging.Logger` to essentially be used for a large amount of io interaction in other libraries.

logging/funcs_nullwriter.go

@@ -1,6 +1,18 @@
 package logging
 
-// nulLWriter writes... nothing. To avoid errors, however, in downstream code it pretends it does (n will *always* == len(b)).
+import (
+	"unicode/utf8"
+)
+
+// Close conforms a nullWriter to an io.WriteCloser. It obviously does nothing, and will always return with err == nil.
+func (nw *nullWriter) Close() (err error) {
+
+	// NO-OP
+
+	return
+}
+
+// Write conforms a nullWriter to an io.Writer, but it writes... nothing. To avoid errors, however, in downstream code it pretends it does (n will *always* == len(b)).
 func (nw *nullWriter) Write(b []byte) (n int, err error) {
 
 	if b == nil {
@@ -10,3 +22,37 @@ func (nw *nullWriter) Write(b []byte) (n int, err error) {
 
 	return
 }
+
+// WriteByte conforms to an io.ByteWriter but again... nothing is actually written anywhere.
+func (nw *nullWriter) WriteByte(c byte) (err error) {
+
+	// NO-OP
+
+	_ = c
+
+	return
+}
+
+/*
+WriteRune conforms to the other Loggers. It WILL return the proper value for n (matching (bytes.Buffer).WriteRune() and (bufio.Writer).WriteRune() signatures,
+and it WILL return an ErrInvalidRune if r is not a valid rune, but otherwise it will no-op.
+*/
+func (nw *nullWriter) WriteRune(r rune) (n int, err error) {
+
+	n = utf8.RuneLen(r)
+	if n < 0 {
+		err = ErrInvalidRune
+		n = 0
+		return
+	}
+
+	return
+}
+
+// WriteString conforms to an io.StringWriter but nothing is actually written. (n will *always* == len(s))
+func (nw *nullWriter) WriteString(s string) (n int, err error) {
+
+	n = len(s)
+
+	return
+}