Main gpython binary - slightly working

Author: ncw

.gitignore

@@ -1 +1,5 @@
 *~
+gpython
+hello.py
+hello.pyc
+__pycache__

main.go

@@ -0,0 +1,63 @@
+// Gpython binary
+
+package main
+
+import (
+"flag"
+"fmt"
+"os"
+//"github.com/ncw/gpython/vm"
+"github.com/ncw/gpython/marshal"
+"log"
+"strings"
+)
+
+// Globals
+var (
+// Flags
+debug=flag.Bool("d", false, "Print lots of debugging")
+)
+
+// syntaxError prints the syntax
+funcsyntaxError(){
+fmt.Fprintf(os.Stderr, `GPython
+
+A python implementation in Go
+
+Full options:
+`)
+flag.PrintDefaults()
+}
+
+// Exit with the message
+funcfatal(messagestring, args...interface{}){
+if!strings.HasSuffix(message, "\n"){
+message+="\n"
+ }
+syntaxError()
+fmt.Fprintf(os.Stderr, message, args...)
+os.Exit(1)
+}
+
+funcmain(){
+flag.Usage=syntaxError
+flag.Parse()
+args:=flag.Args()
+iflen(args) !=1{
+fatal("Need program to run")
+ }
+prog:=args[0]
+fmt.Printf("Running %q\n", prog)
+
+f, err:=os.Open(prog)
+iferr!=nil{
+log.Fatal(err)
+ }
+deferf.Close()
+obj, err:=marshal.ReadPyc(f)
+iferr!=nil{
+log.Fatal(err)
+ }
+fmt.Println(obj)
+
+}