rm junk. add Match()

2 files changed, 18 insertions, 10 deletions

diff --git a/complete.go b/complete.go
index 8cb062e..25d5ef6 100644
--- a/complete.go
+++ b/complete.go
@@ -41,21 +41,15 @@ func ParseFlagsArgv(dest ...interface{}) (*Parser, error) {
 		argvpb.SetDebug(true)
 		argvpb.PB.HelpCounter = 0
 		if argvpb.Len() == 0 {
-			fmt.Fprintf(argvpb.Stddbg, "len(PB.Real)=(%d)\n", len(argvpb.PB.Real))
+			// user didn't enter any text and is hitting <tab> after the command itself
 			p.WriteHelp(argvpb.Stderr)
-			fmt.Fprintf(argvpb.Stddbg, "WriteHelp() (%v)\n", "fricking got here")
-			fmt.Fprintf(argvpb.Stddbg, "WriteHelp() (%v)\n", "fricking got here")
-			fmt.Fprintf(argvpb.Stddbg, "WriteHelp() (%v)\n", "fricking got here")
 			return p, errors.New("WriteHelp() worked")
-		} else {
-			fmt.Fprintf(argvpb.Stddbg, "WriteHelp() damnit len(%v) (%v)\n", len(argvpb.PB.Real), argvpb.PB.Real)
-			fmt.Fprintf(argvpb.Stddbg, "WriteHelp() damnit len(%v) (%v)\n", len(argvpb.PB.Real), argvpb.PB.Real)
-			fmt.Fprintf(argvpb.Stddbg, "WriteHelp() damnit len(%v) (%v)\n", len(argvpb.PB.Real), argvpb.PB.Real)
 		}
+		// user is trying to get help for a subcommand
 		err = p.WriteHelpForAutocomplete("", argvpb.PB.Real...)
 		if err != nil {
-			fmt.Fprintf(argvpb.Stddbg, "returned from WriteHelpForAutocomplete() pb.Real(%v)\n", argvpb.PB.Real)
-			fmt.Fprintf(argvpb.Stddbg, "returned from WriteHelpForAutocomplete(%v)\n", err)
+			// fmt.Fprintf(argvpb.Stddbg, "returned from WriteHelpForAutocomplete() pb.Real(%v)\n", argvpb.PB.Real)
+			fmt.Fprintf(argvpb.Stddbg, "WriteHelpForAutocomplete() err(%v)\n", err)
 		}
 		return p, errors.New("WriteHelpForAutocomplete() worked")
 	}
@@ -63,6 +57,10 @@ func ParseFlagsArgv(dest ...interface{}) (*Parser, error) {
 		err = p.WriteHelpForAutocomplete(argvpb.PB.Partial, argvpb.PB.Real...)
 		fmt.Fprintf(argvpb.Stderr, "returned from WriteHelpForAutocomplete() pb.Real(%v)\n", argvpb.PB.Real)
 		fmt.Fprintf(argvpb.Stderr, "returned from WriteHelpForAutocomplete(%v)\n", err)
+		if p.match != nil {
+			// calls back to the application. this allows the application to provide autocomplete matches
+			p.match()
+		}
 		return p, errors.New("WriteHelpForAutocomplete() subcommand worked")
 	}
 	return p, nil
diff --git a/parse.go b/parse.go
index 4c47316..cc2161e 100644
--- a/parse.go
+++ b/parse.go
@@ -168,6 +168,7 @@ type Parser struct {
 	config      Config
 	version     string
 	description string
+	match       func() bool
 	epilogue    string
 
 	// the following field changes during processing of command line arguments
@@ -190,6 +191,12 @@ type Described interface {
 	Description() string
 }
 
+// will let the application provide matches for autocomplete
+type Matched interface {
+	// the application should return true if it's happy with itself
+	Match() bool
+}
+
 // Epilogued is the interface that the destination struct should implement to
 // add an epilogue string at the bottom of the help message.
 type Epilogued interface {
@@ -300,6 +307,9 @@ func NewParser(config Config, dests ...interface{}) (*Parser, error) {
 		if dest, ok := dest.(Described); ok {
 			p.description = dest.Description()
 		}
+		if dest, ok := dest.(Matched); ok {
+			p.match = dest.Match
+		}
 		if dest, ok := dest.(Epilogued); ok {
 			p.epilogue = dest.Epilogue()
 		}