✨ feat: stdio - add some commonly io interface definition

comdef/types.go

@@ -52,6 +52,13 @@ type Compared interface {
 	Int | Uint | Float | ~string
 }
 
+// SimpleType interface type. alias of ScalarType
+//
+// contains: (x)int, float, ~string, ~bool types
+type SimpleType interface {
+	Int | Uint | Float | ~string | ~bool
+}
+
 // ScalarType interface type.
 //
 // it can be ordered, that supports the operators < <= >= >.

jsonutil/jsonbuild.go

@@ -0,0 +1,21 @@
+package jsonutil
+
+/*
+TODO json build
+type JsonBuilder struct {
+	Indent string
+	// mu  sync.Mutex
+	// cfg *CConfig
+	buf bytes.Buffer
+	out io.Writer
+}
+
+// AddField add field to json
+func (b *JsonBuilder) AddField(key string, value any) *JsonBuilder {
+	b.buf.WriteString(`,"`)
+	b.buf.WriteString(key)
+	b.buf.WriteString(`":`)
+	b.encode(value)
+	return b
+}
+*/

stdio/iface.go

@@ -0,0 +1,30 @@
+package stdio
+
+import "io"
+
+// Flusher interface
+type Flusher interface {
+	Flush() error
+}
+
+// FlushWriter is the interface satisfied by logging destinations.
+type FlushWriter interface {
+	Flusher
+	// Writer the output writer
+	io.Writer
+}
+
+// FlushCloseWriter is the interface satisfied by logging destinations.
+type FlushCloseWriter interface {
+	Flusher
+	// WriteCloser the output writer
+	io.WriteCloser
+}
+
+// SyncCloseWriter is the interface satisfied by logging destinations.
+// such as os.File
+type SyncCloseWriter interface {
+	Flusher
+	// WriteCloser the output writer
+	io.WriteCloser
+}

stdio/stdio.go

@@ -82,7 +82,7 @@ func WriteString(s string) {
 	_, _ = os.Stdout.WriteString(s)
 }
 
-// Writeln to stdout
+// Writeln string to stdout
 func Writeln(s string) {
 	_, _ = os.Stdout.WriteString(s)
 	_, _ = os.Stdout.Write([]byte("\n"))

stdio/stdio_test.go

@@ -32,6 +32,10 @@ func TestNewIOReader(t *testing.T) {
 	assert.Eq(t, "hi", stdio.ReadString(r))
 	r = stdio.NewIOReader(strings.NewReader("hi"))
 	assert.Eq(t, "hi", stdio.ReadString(r))
+
+	r = stdio.NewIOReader("hi")
+	stdio.DiscardReader(r)
+	assert.Eq(t, "", stdio.ReadString(r))
 }
 
 func TestWriteBytes(t *testing.T) {