1 files changed, 45 insertions, 0 deletions
diff --git a/loadByAppname.go b/loadByAppname.go
new file mode 100644
index 0000000..5ee640e
--- /dev/null
+++ b/loadByAppname.go
@@ -0,0 +1,45 @@
+package config
+
+import (
+	"errors"
+
+	"go.wit.com/log"
+	"google.golang.org/protobuf/proto"
+)
+
+// loads foo.proto from ~/.cache/<appname>/foo.text
+func LoadByAppname(pb proto.Message, appname string) error {
+	protoname, err := GetProtobufName(pb) // defined in the foo.proto file
+	if err != nil {
+		return err
+	}
+
+	// Get ~/.cache/appname/protoname.text
+	fullname := makeCacheFilename(appname, protoname)
+
+	// get the current filename in the protobuf file
+	curfilename, err := GetFilename(pb)
+	if err != nil {
+		return err
+	}
+	if curfilename == "" {
+		log.Printf("ConfigLoad() reading in %s\n", fullname)
+	}
+
+	err = loadPB(pb, fullname)
+	if err != nil {
+		return ErrMarshal
+	}
+
+	// If the cache file is new or has moved, this updates it to correct filename
+	// (the filename is what is used by pb.Save()
+	if curfilename != fullname {
+		_, err := SetFilename(pb, fullname)
+		if err != nil {
+			log.Info("FILENAME COULD NOT BE SET old=", curfilename)
+			log.Info("FILENAME COULD NOT BE SET new=", fullname)
+			return errors.Join(err, errors.New("something is wrong in lib/config"))
+		}
+	}
+	return nil
+}