add global variables and Info struct in order to inject build time values via ldflags

Author: Roberto Sora

global/global.go

@@ -0,0 +1,57 @@
+package global
+
+import (
+	"os"
+	"path/filepath"
+)
+
+// appName is the command line name of the Arduino CLI executable on the user system (users may change it)
+var appName = filepath.Base(os.Args[0])
+
+var (
+	application= "arduino-cli"
+	version    = "missing"
+	commit     = "missing"
+	cvsRef     = "missing"
+	buildDate  = "missing"
+	repository = "missing"
+)
+
+
+func GetAppName() string {
+	return appName
+}
+
+func GetApplication() string {
+	return application
+}
+
+func GetVersion() string {
+	return version
+}
+
+func GetCommit() string {
+	return commit
+}
+
+func GetCvsRef() string {
+	return cvsRef
+}
+
+func GetBuildDate() string {
+	return buildDate
+}
+
+func GetRepository() string {
+	return repository
+}
+
+type Info struct {
+	Application string `json:"application"`
+	Version     string `json:"version"`
+	Commit      string `json:"commit"`
+	CvsRef      string `json:"cvsRef"`
+	BuildDate   string `json:"buildDate"`
+	Repository  string `json:"repository"`
+}
+