common code to determin go/src

goSrc.go

@@ -0,0 +1,66 @@
+package forgepb
+
+// returns whatever your golang source dir is
+// If there is a go.work file in your parent, that directory will be returned
+// otherwise, return ~/go/src
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"go.wit.com/lib/gui/shell"
+	"go.wit.com/log"
+)
+
+// look for a go.work file
+// otherwise use ~/go/src
+func FindGoSrc() (string, error) {
+	pwd, err := os.Getwd()
+	if err == nil {
+		// Check for go.work in the current directory and then move up until root
+		if pwd, err := digup(pwd); err == nil {
+			log.Info("using go.work file in directory", pwd)
+			// found an existing go.work file
+			os.Chdir(pwd)
+			return pwd, nil
+		}
+	}
+
+	// there are no go.work files, resume the ~/go/src behavior from prior to golang 1.22
+	pwd, err = useGoSrc()
+	log.Info("using ~/go/src directory", pwd)
+	return pwd, err
+}
+
+// this is the 'old way" and works fine for me. I use it because I like the ~/go/src directory
+// because I know exactly what is in it: GO stuff & nothing else
+func useGoSrc() (string, error) {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return "", err
+	}
+	pwd := filepath.Join(homeDir, "go/src")
+	shell.Mkdir(pwd)
+	os.Chdir(pwd)
+	return pwd, nil
+}
+
+func digup(path string) (string, error) {
+	for {
+		workFilePath := filepath.Join(path, "go.work")
+		if _, err := os.Stat(workFilePath); err == nil {
+			return path, nil // Found the go.work file
+		} else if !os.IsNotExist(err) {
+			return "", err // An error other than not existing
+		}
+
+		parentPath := filepath.Dir(path)
+		if parentPath == path {
+			break // Reached the filesystem root
+		}
+		path = parentPath
+	}
+
+	return "", fmt.Errorf("no go.work file found")
+}