add int64

configfile.go

@@ -57,6 +57,18 @@ func (r *Reader) readInt(name string) (int, error) {
 	return i, nil
 }
 
+func (r *Reader) readInt64(name string) (int64, error) {
+	b, err := r.r.Read(name)
+	if err != nil {
+		return 0, err
+	}
+	i, err := strconv.ParseInt(string(b), 10, 64)
+	if err != nil {
+		return 0, err
+	}
+	return i, nil
+}
+
 func (r *Reader) readBool(name string) (bool, error) {
 	b, err := r.r.Read(name)
 	if err != nil {
@@ -144,6 +156,29 @@ func (r *Reader) MustInt(name string) int {
 	return i
 }
 
+// Int64Default reads int64 from config file with default value
+func (r *Reader) Int64Default(name string, def int64) int64 {
+	i, err := r.readInt64(name)
+	if err != nil {
+		return def
+	}
+	return i
+}
+
+// Int64 reads int from config file
+func (r *Reader) Int64(name string) int64 {
+	return r.Int64Default(name, 0)
+}
+
+// MustInt64 reads int64 from config file, panic if file not exists or data can not parse to int64
+func (r *Reader) MustInt64(name string) int64 {
+	i, err := r.readInt64(name)
+	if err != nil {
+		panic(err)
+	}
+	return i
+}
+
 // BoolDefault reads bool from config file with default value,
 // result is false if lower case data is "", "0", or "false", otherwise true
 func (r *Reader) BoolDefault(name string, def bool) bool {

configfile_test.go

@@ -29,6 +29,15 @@ func testReader(t *testing.T, c *configfile.Reader) {
 			assert.Panics(t, func() { c.MustInt("notfound") })
 		})
 
+		t.Run("Int64", func(t *testing.T) {
+			t.Parallel()
+
+			assert.Equal(t, int64(0), c.Int64("notfound"))
+			assert.Equal(t, int64(0), c.Int64Default("notfound", 0))
+			assert.Equal(t, int64(1), c.Int64Default("notfound", 1))
+			assert.Panics(t, func() { c.MustInt64("notfound") })
+		})
+
 		t.Run("String", func(t *testing.T) {
 			t.Parallel()
 
@@ -70,6 +79,15 @@ func testReader(t *testing.T, c *configfile.Reader) {
 			assert.Panics(t, func() { c.MustInt("empty") })
 		})
 
+		t.Run("Int64", func(t *testing.T) {
+			t.Parallel()
+
+			assert.Equal(t, int64(0), c.Int64("empty"))
+			assert.Equal(t, int64(0), c.Int64Default("empty", 0))
+			assert.Equal(t, int64(1), c.Int64Default("empty", 1))
+			assert.Panics(t, func() { c.MustInt64("empty") })
+		})
+
 		t.Run("String", func(t *testing.T) {
 			t.Parallel()
 
@@ -111,6 +129,15 @@ func testReader(t *testing.T, c *configfile.Reader) {
 			assert.Panics(t, func() { c.MustInt("data1") })
 		})
 
+		t.Run("Int64", func(t *testing.T) {
+			t.Parallel()
+
+			assert.Equal(t, int64(0), c.Int64("data1"))
+			assert.Equal(t, int64(0), c.Int64Default("data1", 0))
+			assert.Equal(t, int64(1), c.Int64Default("data1", 1))
+			assert.Panics(t, func() { c.MustInt64("data1") })
+		})
+
 		t.Run("String", func(t *testing.T) {
 			t.Parallel()
 
@@ -152,6 +179,15 @@ func testReader(t *testing.T, c *configfile.Reader) {
 			assert.Panics(t, func() { c.MustInt("data2") })
 		})
 
+		t.Run("Int64", func(t *testing.T) {
+			t.Parallel()
+
+			assert.Equal(t, int64(0), c.Int64("data2"))
+			assert.Equal(t, int64(0), c.Int64Default("data2", 0))
+			assert.Equal(t, int64(1), c.Int64Default("data2", 1))
+			assert.Panics(t, func() { c.MustInt64("data2") })
+		})
+
 		t.Run("String", func(t *testing.T) {
 			t.Parallel()
 
@@ -193,6 +229,15 @@ func testReader(t *testing.T, c *configfile.Reader) {
 			assert.NotPanics(t, func() { c.MustInt("data3") })
 		})
 
+		t.Run("Int64", func(t *testing.T) {
+			t.Parallel()
+
+			assert.Equal(t, int64(9), c.Int64("data3"))
+			assert.Equal(t, int64(9), c.Int64Default("data3", 0))
+			assert.Equal(t, int64(9), c.Int64Default("data3", 1))
+			assert.NotPanics(t, func() { c.MustInt64("data3") })
+		})
+
 		t.Run("String", func(t *testing.T) {
 			t.Parallel()
 
@@ -234,6 +279,15 @@ func testReader(t *testing.T, c *configfile.Reader) {
 			assert.NotPanics(t, func() { c.MustInt("data4") })
 		})
 
+		t.Run("Int64", func(t *testing.T) {
+			t.Parallel()
+
+			assert.Equal(t, int64(0), c.Int64("data4"))
+			assert.Equal(t, int64(0), c.Int64Default("data4", 0))
+			assert.Equal(t, int64(0), c.Int64Default("data4", 1))
+			assert.NotPanics(t, func() { c.MustInt64("data4") })
+		})
+
 		t.Run("String", func(t *testing.T) {
 			t.Parallel()