From 6a938e20abc6c4b61683db447f912f67482f4779 Mon Sep 17 00:00:00 2001
From: Sebastien Douheret <sebastien.douheret@iot.bzh>
Date: Fri, 22 Dec 2017 21:35:14 +0100
Subject: Added splitter method selection in eows lib.

---
 golib/eows/eows-out.go | 13 ++++++++++++-
 golib/eows/eows.go     | 14 +++++++++++++-
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/golib/eows/eows-out.go b/golib/eows/eows-out.go
index 3abbdc0..2a6b110 100644
--- a/golib/eows/eows-out.go
+++ b/golib/eows/eows-out.go
@@ -3,9 +3,10 @@ package eows
 import (
 	"bufio"
 	"io"
+	"strings"
 )
 
-// scanBlocks
+// scanBlocks - gain character by character (or as soon as one or more characters are available)
 func scanBlocks(data []byte, atEOF bool) (advance int, token []byte, err error) {
 	if atEOF && len(data) == 0 {
 		return 0, nil, nil
@@ -20,7 +21,12 @@ func (e *ExecOverWS) cmdPumpStdout(r io.Reader, done chan struct{}) {
 	}()
 
 	sc := bufio.NewScanner(r)
+
+	// else use default sc.ScanLines
+	if e.OutSplit == SplitChar {
 	sc.Split(scanBlocks)
+	}
+
 	for sc.Scan() {
 		e.OutputCB(e, sc.Text(), "")
 	}
@@ -37,7 +43,12 @@ func (e *ExecOverWS) cmdPumpStderr(r io.Reader) {
 	defer func() {
 	}()
 	sc := bufio.NewScanner(r)
+
+	// else use default sc.ScanLines
+	if e.OutSplit == SplitChar {
 	sc.Split(scanBlocks)
+	}
+
 	for sc.Scan() {
 		e.OutputCB(e, "", sc.Text())
 	}
diff --git a/golib/eows/eows.go b/golib/eows/eows.go
index 6fc3550..a5767ed 100644
--- a/golib/eows/eows.go
+++ b/golib/eows/eows.go
@@ -20,6 +20,16 @@ type EmitOutputCB func(e *ExecOverWS, stdout, stderr string)
 // EmitExitCB is the function callback used to emit exit proc code
 type EmitExitCB func(e *ExecOverWS, code int, err error)
 
+// SplitType Type of spliting method to tokenize stdout/stderr
+type SplitType uint8
+
+const (
+	// SplitLine Split line by line
+	SplitLine SplitType = iota
+	// SplitChar Split character by character
+	SplitChar
+)
+
 // Inspired by :
 // https://github.com/gorilla/websocket/blob/master/examples/command/main.go
 
@@ -40,6 +50,7 @@ type ExecOverWS struct {
 	OutputCB       EmitOutputCB            // stdout/stderr callback
 	ExitCB         EmitExitCB              // exit proc callback
 	UserData       *map[string]interface{} // user data passed to callbacks
+	OutSplit       SplitType               // split method to tokenize stdout/stderr
 
 	// Private fields
 	proc *os.Process
@@ -56,7 +67,8 @@ func New(cmd string, args []string, so *socketio.Socket, soID, cmdID string) *Ex
 		SocketIO:       so,
 		Sid:            soID,
 		CmdID:          cmdID,
-		CmdExecTimeout: -1, // default no timeout
+		CmdExecTimeout: -1,        // default no timeout
+		OutSplit:       SplitChar, // default split by character
 	}
 
 	cmdIDMap[cmdID] = e
-- 
cgit 1.2.3-korg