process/get GUI versionv0.22.0v0.21.1

1 files changed, 48 insertions, 2 deletions

diff --git a/main.go b/main.go
index fe6ebc6..e4944e7 100644
--- a/main.go
+++ b/main.go
@@ -1,8 +1,10 @@
 package gui
 
 import (
+	"errors"
 	"fmt"
 	"os"
+	"runtime/debug"
 
 	"go.wit.com/log"
 	"go.wit.com/widget"
@@ -32,8 +34,12 @@ func init() {
 
 	me.guiChan = make(chan widget.Action, 1)
 
-	fmt.Println("GO GUI version <ldflags here>", showVersion() + "<Bromeliaceae>")
-	log.Sleep(1)
+	version, err := getGuiVersion()
+	fmt.Println("GO GUI version", version, showVersion()+"<Bromeliaceae>", err)
+	if version == "" {
+		log.Warn("Warning: compiled without version", err)
+		log.Sleep(1)
+	}
 	go watchCallback()
 }
 
@@ -57,6 +63,46 @@ func showVersion() string {
 	return color1 + " " + color2 + " " + color3 + " " + color4 + " " + color5 + " " + color6 + " " + color7 + " " + color8
 }
 
+var GUIVERSION string
+
+func getGuiVersion() (string, error) {
+	var found string
+	tmp, ok := debug.ReadBuildInfo()
+	if !ok {
+		return "", errors.New("debug.ReadBuildInfo() not ok")
+	}
+	if tmp == nil {
+		return "", errors.New("compiled without go module support")
+	}
+	fmt.Println("mod.Path         = ", tmp.Path)
+	fmt.Println("mod.Main.Path    = ", tmp.Main.Path)
+	fmt.Println("mod.Main.Version = ", tmp.Main.Version)
+	fmt.Println("mod.Main.Sum     = ", tmp.Main.Sum)
+	for _, value := range tmp.Deps {
+		if value.Path == "go.wit.com/gui" {
+			found = value.Version
+		}
+		fmt.Println("\tmod.Path    = ", value.Path)
+		fmt.Println("\tmod.Version = ", value.Version)
+	}
+	if found != "" {
+		log.Println("GUI build version:", found)
+		return found, nil
+	}
+	if GUIVERSION != "" {
+		log.Println("GUI build ldflag:", GUIVERSION)
+		return GUIVERSION, nil
+	}
+	if os.Getenv("GUIVERSION") != "" {
+		found = os.Getenv("GUIVERSION") + "-dirty"
+		log.Println("GUI build $GUIVERSION", found)
+		return found, nil
+	}
+	found = "pre-v1-GO111"
+	log.Println("GUI build version:", found)
+	return found, errors.New("GO111 developer build")
+}
+
 // lookup the widget by the id sent from the toolkit
 func (n *Node) findId(i int) *Node {
 	if n == nil {