someday

ledger/file.go

@@ -0,0 +1,41 @@
+package ledger
+
+import (
+	"github.com/howeyc/ledger"
+)
+
+type File string
+
+func NewFile(p string) (File, error) {
+	f := File(p)
+	_, err := f.Deltas()
+	return f, err
+}
+
+func (file File) Deltas(likes ...Like) ([]Delta, error) {
+	transactions, err := file.transactions()
+	if err != nil {
+		return nil, err
+	}
+	result := make([]Delta, 0, len(transactions)*2)
+	for _, transaction := range transactions {
+		for _, delta := range newDeltas(transaction) {
+			if got := func() bool {
+				for _, like := range likes {
+					if !like(delta) {
+						return false
+					}
+				}
+				return true
+			}(); !got {
+				continue
+			}
+			result = append(result, delta)
+		}
+	}
+	return result, nil
+}
+
+func (file File) transactions() ([]*ledger.Transaction, error) {
+	return ledger.ParseLedgerFile(string(file))
+}