dates can be strings i dont care

ledger/delta.go

@@ -1,9 +1,5 @@
 package ledger
 
-import (
-	"time"
-)
-
 type Currency string
 
 const (
@@ -11,14 +7,14 @@ const (
 )
 
 type Delta struct {
-	Date        time.Time
+	Date        string
 	Account     string
 	Value       float64
 	Currency    Currency
 	Description string
 }
 
-func newDelta(d time.Time, desc, acc string, v float64, c string) Delta {
+func newDelta(d, desc, acc string, v float64, c string) Delta {
 	return Delta{
 		Date:        d,
 		Account:     acc,

ledger/delta_test.go

@@ -2,14 +2,10 @@ package ledger
 
 import (
 	"testing"
-	"time"
 )
 
 func TestDelta(t *testing.T) {
-	d, err := time.Parse("2006-01-02", "2099-08-07")
+	d := "2099-08-07"
-	if err != nil {
-		t.Fatal(err)
-	}
 	delta := newDelta(d, "", "name", 34.56, "$")
 
 	if delta.Date != d {
@@ -26,7 +22,7 @@ func TestDelta(t *testing.T) {
 	}
 	t.Log(delta)
 
-	d2, _ := time.Parse("2006-01-02", "2099-09-08")
+	d2 := "2099-09-08"
 	delta2 := newDelta(d2, "", "name", 11.11, "$")
 
 	combined := delta.Plus(delta2)

ledger/file.go

@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"io"
 	"os"
-	"time"
 )
 
 type File string
@@ -60,7 +59,7 @@ func (file File) Deltas(like ...Like) ([]Delta, error) {
 }
 
 type transaction struct {
-	date        time.Time
+	date        string
 	description string
 	payee       string
 	recipients  []transactionRecipient
@@ -89,7 +88,7 @@ func (file File) transactions() ([]transaction, error) {
 		if !one.empty() {
 			result = append(result, one)
 		}
-		if errors.Is(err, io.EOF) {
+		if err == io.EOF {
 			return result, nil
 		}
 		if err != nil {
@@ -99,5 +98,36 @@ func (file File) transactions() ([]transaction, error) {
 }
 
 func readTransaction(r io.Reader) (transaction, error) {
-	return transaction{}, io.EOF
+	result := transaction{}
+	var err error
+
+	if result.date, err = readTransactionDate(r); err != nil {
+		return result, fmt.Errorf("did not find transaction date: %w", err)
+	}
+
+	if result.description, err = readTransactionDescription(r); err != nil {
+		return result, fmt.Errorf("did not find transaction description: %w", err)
+	}
+
+	return transaction{}, errors.New("not impl: reading payee, recipients")
+}
+
+func readTransactionDate(r io.Reader) (string, error) {
+	var firstByte [1]byte
+	for firstByte[0] < '0' || firstByte[0] > '9' {
+		if _, err := r.Read(firstByte[:]); err != nil {
+			return "", err
+		}
+	}
+
+	restOfDate := make([]byte, len("2006-01-02")-1)
+	if _, err := r.Read(restOfDate); err != nil {
+		return "", err
+	}
+
+	return fmt.Sprintf("%s%s", firstByte, restOfDate), nil
+}
+
+func readTransactionDescription(r io.Reader) (string, error) {
+	return "", io.EOF
 }

ledger/file_test.go

@@ -5,35 +5,30 @@ import (
 	"io"
 	"strings"
 	"testing"
-	"time"
 )
 
 func TestFileDeltas(t *testing.T) {
-	d := func(s string) time.Time {
-		v, _ := time.Parse("2006-01-02", s)
-		return v
-	}
 	happy := []Delta{
 		{
-			Date:     d("2022-12-12"),
+			Date:     "2022-12-12",
 			Account:  "AssetAccount:Cash:Fidelity76",
 			Value:    -97.92,
 			Currency: USD,
 		},
 		{
-			Date:     d("2022-12-12"),
+			Date:     "2022-12-12",
 			Account:  "Withdrawal:0:SharedHome:DominionEnergy",
 			Value:    97.92,
 			Currency: USD,
 		},
 		{
-			Date:     d("2022-12-12"),
+			Date:     "2022-12-12",
 			Account:  "AssetAccount:Cash:Fidelity76",
 			Value:    -1.00,
 			Currency: USD,
 		},
 		{
-			Date:     d("2022-12-12"),
+			Date:     "2022-12-12",
 			Account:  "Debts:Credit:ChaseFreedomUltdVisa",
 			Value:    1.00,
 			Currency: USD,
@@ -75,10 +70,6 @@ func TestFileDeltas(t *testing.T) {
 }
 
 func TestReadTransaction(t *testing.T) {
-	d := func(s string) time.Time {
-		v, _ := time.Parse("2006-01-02", s)
-		return v
-	}
 	cases := map[string]struct {
 		input string
 		want  transaction
@@ -101,7 +92,7 @@ func TestReadTransaction(t *testing.T) {
    C:D   $-1.00
          `,
 			want: transaction{
-				date:        d("2003-04-05"),
+				date:        "2003-04-05",
 				description: "Reasoning here",
 				payee:       "",
 				recipients: []transactionRecipient{