expose func

goModClean.go

@@ -0,0 +1,30 @@
+package fhelp
+
+import (
+	"fmt"
+
+	"go.wit.com/log"
+)
+
+func CheckGoModClean() bool {
+	if checkCmdSimple("go-mod-clean") {
+		return true
+	}
+	goModCleanInstructions()
+	return false
+}
+
+func CheckGoModCleanExit() {
+	if CheckGoModClean() {
+		return
+	}
+	badExit(fmt.Errorf("missing go-mod-clean"))
+}
+
+func goModCleanInstructions() {
+	log.Info("you are missing 'go-mod-clean' which is required")
+	log.Info("")
+	log.Info("you can:")
+	log.Info("   go install go.wit.com/apps/utils/go-mod-clean   # if you have go")
+	log.Info("")
+}

human.go

@@ -4,19 +4,44 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"runtime"
 
 	"go.wit.com/log"
 )
 
 func CheckProtoc() bool {
-	if checkCmdSimple("protoc") {
+	if !checkCmdSimple("protoc") {
 		userInstructions()
-		log.Sleep(2)
+		switch runtime.GOOS {
+		case "linux":
+			linuxInstall("protoc")
+		case "macos":
+			log.Info("todo: print instructions here for installing protoc on macos. brew install?")
+		case "windows":
+			log.Info("todo: print instructions here for installing protoc on windows")
+		default:
+			log.Info("todo: print instructions here for installing protoc on", runtime.GOOS)
+		}
 		return false
 	}
-	if checkCmdSimple("protoc-gen-go") {
+	if !checkCmdSimple("protoc") {
+		return false
+	}
+
+	if !checkCmdSimple("protoc-gen-go") {
 		userInstructions()
-		log.Sleep(2)
+		switch runtime.GOOS {
+		case "linux":
+			linuxInstall("protoc-gen-go")
+		case "macos":
+			log.Info("todo: print instructions here for installing protoc on macos. brew install?")
+		case "windows":
+			log.Info("todo: print instructions here for installing protoc on windows")
+		default:
+			log.Info("todo: print instructions here for installing protoc on", runtime.GOOS)
+		}
+	}
+	if !checkCmdSimple("protoc-gen-go") {
 		return false
 	}
 	return true
@@ -33,7 +58,7 @@ func checkCmdSimple(cmd string) bool {
 	return true
 }
 
-func checkCmd(cmd string) (string, error) {
+func CheckCmd(cmd string) (string, error) {
 	path, err := exec.LookPath(cmd)
 	if err != nil {
 		fmt.Printf("\n%s is not in the PATH\n", cmd)
@@ -43,6 +68,8 @@ func checkCmd(cmd string) (string, error) {
 	return path, err
 }
 
+/*
+
 func oldcheckCmd(cmd string) {
 	// path, err := exec.LookPath(cmd)
 	_, err := exec.LookPath(cmd)
@@ -54,6 +81,7 @@ func oldcheckCmd(cmd string) {
 		// fmt.Printf("%s is available at %s\n", cmd, path)
 	}
 }
+*/
 
 // todo: figure out how to determine, in a package, what the program name is
 func okExit(s string) {

linux.go

@@ -0,0 +1,34 @@
+package fhelp
+
+// auto run protoc with the correct args
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+
+	"go.wit.com/lib/gui/shell"
+	"go.wit.com/log"
+)
+
+func linuxInstall(pkg string) {
+	cmd := []string{"apt", "install", "-y", pkg}
+	if pkg == "protoc" {
+		cmd = []string{"apt", "install", "-y", "protobuf-compiler"}
+	}
+	log.Info("Would you like to run", "sudo", cmd, "now?")
+	fmt.Fprintf(os.Stdout, "(y)es or (n)o ? ")
+
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		line := scanner.Text()
+		line = strings.TrimSpace(line)
+		line = strings.ToLower(line)
+		switch line {
+		case "y":
+			shell.Sudo(cmd)
+		default:
+		}
+	}
+}

protoc.go

@@ -54,34 +54,71 @@ func ValidProtobuf(filename string) (string, string, error) {
 		scanner.Scan()
 		line = scanner.Text()
 		fields := strings.Fields(line)
+		if len(fields) < 2 {
+			noUuidExit(filename)
+			return "", "", fmt.Errorf("proto file does not have a UUID")
+		}
 		// log.Info("GOT LINE", line)
 		if fields[0] == "string" && fields[1] != "uuid" {
-			noUuid(filename)
+			noUuidExit(filename)
 			return "", "", fmt.Errorf("proto file does not have a UUID")
 		}
 		// ok, uuid is here
-		UUID := line
+		UUID := parseUuid(line)
-		log.Info("found UUID:", line)
+		if UUID == "" {
-
+			noUuidExit(filename)
+			return "", "", fmt.Errorf("proto file does not have a UUID")
+		}
+		log.Info("found UUID:", UUID)
 		scanner.Scan()
 		line = scanner.Text()
 		fields = strings.Fields(line)
 		// log.Info("GOT LINE", line)
 		if fields[0] == "string" && fields[1] != "version" {
-			noUuid(filename)
+			noUuidExit(filename)
 			return "", "", fmt.Errorf("proto file does not have a version")
 		}
 		// found "version", the .proto file conforms
-		version := line
+		version := parseVersion(line)
-		log.Info("found Version:", line)
+		if version == "" {
+			noUuidExit(filename)
+			return "", "", fmt.Errorf("proto file does not have a version")
+		}
+		log.Info("found Version:", version)
 		return UUID, version, nil
 	}
 	// right now, noPluralMessage does os.Exit(-1)
-	// return "", "", noPluralMessage(filename)
+	noPluralMessageExit(filename)
 	return "", "", fmt.Errorf("proto file does not have message %s", pluralBase)
 }
 
-func noPluralMessage(filename string) {
+func parseUuid(line string) string {
+	fields := strings.Split(line, "autogenpb:uuid:")
+	if len(fields) < 2 {
+		return ""
+	}
+	end := fields[1]
+	fields = strings.Fields(end)
+	uuid := fields[0]
+	uuid = strings.Trim(uuid, "`")
+	// log.Info("fhelp.parseUuid() uuid =", uuid)
+	return uuid
+}
+
+func parseVersion(line string) string {
+	fields := strings.Split(line, "autogenpb:version:")
+	if len(fields) < 2 {
+		return ""
+	}
+	end := fields[1]
+	fields = strings.Fields(end)
+	ver := fields[0]
+	ver = strings.Trim(ver, "`")
+	// log.Info("fhelp.parseVersion() ver =", ver)
+	return ver
+}
+
+func noPluralMessageExit(filename string) {
 	filebase := strings.TrimSuffix(filename, ".proto")
 	base := cases.Title(language.English, cases.NoLower).String(filebase)
 
@@ -106,7 +143,7 @@ func noPluralMessage(filename string) {
 // 	repeated Fruit Fruits   = 3;    // THIS MUST BE "Fruit" and then "Fruit" + "s"
 // }
 
-func noUuid(filename string) {
+func noUuidExit(filename string) {
 	filebase := strings.TrimSuffix(filename, ".proto")
 	base := cases.Title(language.English, cases.NoLower).String(filebase)
 	id := uuid.New()
@@ -125,7 +162,14 @@ func noUuid(filename string) {
 	log.Info("")
 	log.Info("If you don't have a UUID, you can use the randomly generated one here")
 	log.Info("")
+	log.Info("If you wish to ignore this, set PROTOBUF_REGRET=true")
+	log.Info("You will probably regret not trying to follow the standard here. This format is used as a 'handshake'.")
 	log.Info("###########################################################################")
+	if os.Getenv("PROTOBUF_REGRET") == "true" {
+		log.Info("PROTOBUF_REGRET=true was set")
+		log.Info("###########################################################################")
+		return
+	}
 	badExit(fmt.Errorf("proto file error %s", filename))
 }