init: pristine aerc 0.20.0 source

lib/pama/pama.go

@@ -0,0 +1,51 @@
+package pama
+
+import (
+	"fmt"
+
+	"git.sr.ht/~rjarry/aerc/lib/pama/models"
+	"git.sr.ht/~rjarry/aerc/lib/pama/revctrl"
+	"git.sr.ht/~rjarry/aerc/lib/pama/store"
+)
+
+type (
+	detectFn func(string) (string, string, error)
+	rcFn     func(string, string) (models.RevisionController, error)
+	storeFn  func() models.PersistentStorer
+)
+
+type PatchManager struct {
+	detect detectFn
+	rc     rcFn
+	store  storeFn
+}
+
+func New() PatchManager {
+	return PatchManager{
+		detect: revctrl.Detect,
+		rc:     revctrl.New,
+		store:  store.Store,
+	}
+}
+
+func FromFunc(d detectFn, r rcFn, s storeFn) PatchManager {
+	return PatchManager{
+		detect: d,
+		rc:     r,
+		store:  s,
+	}
+}
+
+func storeErr(err error) error {
+	if err == nil {
+		return nil
+	}
+	return fmt.Errorf("store error: %w", err)
+}
+
+func revErr(err error) error {
+	if err == nil {
+		return nil
+	}
+	return fmt.Errorf("revision control error: %w", err)
+}