cleanup of the example commands. more plugin workv0.4.6

    add a button in two plugins at the same time!
        added a button in andlabs/ui & gocui
    attempt a common widget struct between wit/gui & the plugins
    start handling missing plugins
    rename Makefile command examples
    remote examples used for testing
    filename improvements
    golang src code uses lowercase and _ in filenames
    fix crash when button click function == nil
    fix wrong name 'gocli' -> 'gocui'
    keep fighting with goreadme generated README.md

Signed-off-by: Jeff Carr <[email protected]>

1 files changed, 64 insertions, 0 deletions

diff --git a/cmds/buttonplugin/log.go b/cmds/buttonplugin/log.go
new file mode 100644
index 0000000..642ff7b
--- /dev/null
+++ b/cmds/buttonplugin/log.go
@@ -0,0 +1,64 @@
+// This creates a simple hello world window
+package main
+
+import 	(
+	"log"
+	"fmt"
+	"os"
+	"io"
+	"time"
+	"bufio"
+	arg "github.com/alexflint/go-arg"
+)
+
+
+var args struct {
+	Foo string
+	Bar bool
+	User string `arg:"env:USER"`
+	Demo bool `help:"run a demo"`
+}
+
+var f1 *os.File
+var f2 *os.File
+var err error
+
+func init() {
+	arg.MustParse(&args)
+	fmt.Println(args.Foo, args.Bar, args.User)
+
+	f1, err = os.OpenFile("/tmp/guilogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
+	if err != nil {
+		log.Fatalf("error opening file: %v", err)
+	}
+	// hmm. is there a trick here or must this be in main()
+	// defer f.Close()
+
+	log.SetOutput(f1)
+	log.Println("This is a test log entry")
+}
+
+func captureSTDOUT() {
+	f2, _ = os.OpenFile("/tmp/my.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0664)
+	multiWriter := io.MultiWriter(os.Stderr, f2)
+	rd, wr, err := os.Pipe()
+	if err != nil {
+	    os.Exit(1)
+	}
+
+	// overwrite os.Stdout
+	os.Stderr = wr
+
+	go func() {
+	    scanner := bufio.NewScanner(rd)
+	    for scanner.Scan() {
+	        stdoutLine := scanner.Text()
+	        multiWriter.Write([]byte(stdoutLine + "\n"))
+	    }
+	}()
+
+	fmt.Println("foobar")
+
+	// hacky sleep to ensure the go routine can write before program exits
+	time.Sleep(time.Second)
+}