first commit status: option and argument parsing, short aliases grouping, special values, hidden options

Option types: bool int, int-array, string, string-array, string-map, file, dir

opt-version.go

@@ -0,0 +1,36 @@
+package cli
+
+import (
+	"io"
+)
+
+type cliOptionVersion struct {
+	cliOptionBase
+}
+
+func (opt *cliOptionVersion) init() {
+}
+
+func (opt *cliOptionVersion) requiresValue() bool {
+	return false
+}
+
+func (opt *cliOptionVersion) getDefaultValue() string {
+	return ""
+}
+
+func (opt *cliOptionVersion) getTemplate() string {
+	return opt.makeOptSimpleTemplate(false, true, "section")
+}
+
+func (opt *cliOptionVersion) parse(parser cliParser, argIndex int, valuePtr *string) (skipNextArg bool, err error) {
+	var args []string
+	if valuePtr != nil {
+		args = []string{*valuePtr}
+	} else {
+		args = parser.getCliArgs(argIndex+2, -1)
+	}
+	parser.PrintVersion(args)
+	err = io.EOF
+	return
+}