refactor(examples): allow recursive go build and go test

The examples/ code was poorly organized, with `main()` being
redeclared several times. This could prevent other projects from
using the standard `go build ./...` syntax.

Author: mboersma

.travis.yml

@@ -6,6 +6,7 @@ language: go
 
 go:
     - 1.2.2
+    - 1.3
     - tip
 
 matrix:
@@ -18,12 +19,13 @@ before_install:
     - go get -v github.com/mattn/goveralls
 
 install:
-    - go get -d -v ./... && go build -v .
+    - go get -d -v ./... && go build -v ./...
 
 script:
     - go vet -x ./...
     - $HOME/gopath/bin/golint .
-    - go test -covermode=count -coverprofile=profile.cov -v .
+    - go test -v ./...
+    - go test -covermode=count -coverprofile=profile.cov .
 
 after_script:
     - $HOME/gopath/bin/goveralls -coverprofile=profile.cov -service=travis-ci

examples/arguments_example.go renamed to examples/arguments/arguments_example.go

@@ -1,4 +1,4 @@
-package main
+package git
 
 import (
 	"fmt"

examples/calculator_example.go renamed to examples/calculator/calculator_example.go

@@ -1,4 +1,4 @@
-package main
+package git
 
 import (
 	"fmt"

examples/config_file_example.go renamed to examples/config_file/config_file_example.go

@@ -1,4 +1,4 @@
-package main
+package git
 
 import (
 	"fmt"

examples/counted_example.go renamed to examples/counted/counted_example.go

@@ -71,14 +71,38 @@ func runCommand(cmd string, args []string) (err error) {
 		return cmdAdd(argv)
 	case "branch":
 		// subcommand is a script
-		return goRun("git_branch.go", argv)
+		return goRun("branch/git_branch.go", argv)
 	case "checkout", "clone", "commit", "push", "remote":
 		// subcommand is a script
-		scriptName := fmt.Sprintf("git_%s.go", cmd)
+		scriptName := fmt.Sprintf("%s/git_%s.go", cmd, cmd)
 		return goRun(scriptName, argv)
 	case "help", "":
 		return goRun("git.go", []string{"git_add.go", "--help"})
 	}
 
 	return fmt.Errorf("%s is not a git command. See 'git help'", cmd)
 }
+
+func cmdAdd(argv []string) (err error) {
+	usage := `usage: git add [options] [--] [<filepattern>...]
+
+options:
+	-h, --help
+	-n, --dry-run        dry run
+	-v, --verbose        be verbose
+	-i, --interactive    interactive picking
+	-p, --patch          select hunks interactively
+	-e, --edit           edit current diff and apply
+	-f, --force          allow adding otherwise ignored files
+	-u, --update         update tracked files
+	-N, --intent-to-add  record only the fact that the path will be added later
+	-A, --all            add all, noticing removal of tracked files
+	--refresh            don't add, only refresh the index
+	--ignore-errors      just skip files which cannot be added because of errors
+	--ignore-missing     check if - even missing - files are ignored in dry run
+`
+
+	args, _ := docopt.Parse(usage, nil, true, "", false)
+	fmt.Println(args)
+	return
+}