more fun with triv.go: flags and arguments

R=rsc
DELTA=23  (23 added, 0 deleted, 0 changed)
OCL=25088
CL=25134

diff --git a/src/lib/http/triv.go b/src/lib/http/triv.go
index 3c527310edb1f3a9d47065d7eca533e259b56b2f..666f2b204ae40c1f988f8194d66e5b33d4668bd1 100644 (file)
--- a/src/lib/http/triv.go
+++ b/src/lib/http/triv.go
@@ -45,6 +45,27 @@ func FileServer(c *http.Conn, req *http.Request) {
        fmt.Fprintf(c, "[%d bytes]\n", n);
 }
 
+// simple flag server
+var booleanflag = flag.Bool("boolean", true, "another flag for testing")
+func FlagServer(c *http.Conn, req *http.Request) {
+       c.SetHeader("content-type", "text/plain; charset=utf-8");
+       fmt.Fprint(c, "Flags:\n");
+       flag.VisitAll(func (f *flag.Flag) {
+               if f.Value.String() != f.DefValue {
+                       fmt.Fprintf(c, "%s = %s [default = %s]\n", f.Name, f.Value.String(), f.DefValue);
+               } else {
+                       fmt.Fprintf(c, "%s = %s\n", f.Name, f.Value.String());
+               }
+       });
+}
+
+// simple argument server
+func ArgServer(c *http.Conn, req *http.Request) {
+       for i, s := range sys.Args {
+               fmt.Fprint(c, s, " ");
+       }
+}
+
 // a channel (just for the fun of it)
 type Chan chan int
 
@@ -66,6 +87,8 @@ func main() {
        flag.Parse();
        http.Handle("/counter", new(Counter));
        http.Handle("/go/", http.HandlerFunc(FileServer));
+       http.Handle("/flags/", http.HandlerFunc(FlagServer));
+       http.Handle("/args/", http.HandlerFunc(ArgServer));
        http.Handle("/go/hello", http.HandlerFunc(HelloServer));
        http.Handle("/chan", ChanCreate());
        err := http.ListenAndServe(":12345", nil);