Import to pgx main repo in pgtype subdir

2021-12-04 13:07:54 -06:00
parent 550cc7b529
commit 44214b7854
237 changed files with 0 additions and 0 deletions
@@ -0,0 +1,155 @@
+package pgtype
+
+import (
+	"database/sql/driver"
+	"encoding/binary"
+	"fmt"
+	"math"
+	"strconv"
+	"strings"
+
+	"github.com/jackc/pgio"
+)
+
+type Box struct {
+	P     [2]Vec2
+	Valid bool
+}
+
+func (dst *Box) Set(src interface{}) error {
+	return fmt.Errorf("cannot convert %v to Box", src)
+}
+
+func (dst Box) Get() interface{} {
+	if !dst.Valid {
+		return nil
+	}
+	return dst
+}
+
+func (src *Box) AssignTo(dst interface{}) error {
+	return fmt.Errorf("cannot assign %v to %T", src, dst)
+}
+
+func (dst *Box) DecodeText(ci *ConnInfo, src []byte) error {
+	if src == nil {
+		*dst = Box{}
+		return nil
+	}
+
+	if len(src) < 11 {
+		return fmt.Errorf("invalid length for Box: %v", len(src))
+	}
+
+	str := string(src[1:])
+
+	var end int
+	end = strings.IndexByte(str, ',')
+
+	x1, err := strconv.ParseFloat(str[:end], 64)
+	if err != nil {
+		return err
+	}
+
+	str = str[end+1:]
+	end = strings.IndexByte(str, ')')
+
+	y1, err := strconv.ParseFloat(str[:end], 64)
+	if err != nil {
+		return err
+	}
+
+	str = str[end+3:]
+	end = strings.IndexByte(str, ',')
+
+	x2, err := strconv.ParseFloat(str[:end], 64)
+	if err != nil {
+		return err
+	}
+
+	str = str[end+1 : len(str)-1]
+
+	y2, err := strconv.ParseFloat(str, 64)
+	if err != nil {
+		return err
+	}
+
+	*dst = Box{P: [2]Vec2{{x1, y1}, {x2, y2}}, Valid: true}
+	return nil
+}
+
+func (dst *Box) DecodeBinary(ci *ConnInfo, src []byte) error {
+	if src == nil {
+		*dst = Box{}
+		return nil
+	}
+
+	if len(src) != 32 {
+		return fmt.Errorf("invalid length for Box: %v", len(src))
+	}
+
+	x1 := binary.BigEndian.Uint64(src)
+	y1 := binary.BigEndian.Uint64(src[8:])
+	x2 := binary.BigEndian.Uint64(src[16:])
+	y2 := binary.BigEndian.Uint64(src[24:])
+
+	*dst = Box{
+		P: [2]Vec2{
+			{math.Float64frombits(x1), math.Float64frombits(y1)},
+			{math.Float64frombits(x2), math.Float64frombits(y2)},
+		},
+		Valid: true,
+	}
+	return nil
+}
+
+func (src Box) EncodeText(ci *ConnInfo, buf []byte) ([]byte, error) {
+	if !src.Valid {
+		return nil, nil
+	}
+
+	buf = append(buf, fmt.Sprintf(`(%s,%s),(%s,%s)`,
+		strconv.FormatFloat(src.P[0].X, 'f', -1, 64),
+		strconv.FormatFloat(src.P[0].Y, 'f', -1, 64),
+		strconv.FormatFloat(src.P[1].X, 'f', -1, 64),
+		strconv.FormatFloat(src.P[1].Y, 'f', -1, 64),
+	)...)
+	return buf, nil
+}
+
+func (src Box) EncodeBinary(ci *ConnInfo, buf []byte) ([]byte, error) {
+	if !src.Valid {
+		return nil, nil
+	}
+
+	buf = pgio.AppendUint64(buf, math.Float64bits(src.P[0].X))
+	buf = pgio.AppendUint64(buf, math.Float64bits(src.P[0].Y))
+	buf = pgio.AppendUint64(buf, math.Float64bits(src.P[1].X))
+	buf = pgio.AppendUint64(buf, math.Float64bits(src.P[1].Y))
+
+	return buf, nil
+}
+
+// Scan implements the database/sql Scanner interface.
+func (dst *Box) Scan(src interface{}) error {
+	if src == nil {
+		*dst = Box{}
+		return nil
+	}
+
+	switch src := src.(type) {
+	case string:
+		return dst.DecodeText(nil, []byte(src))
+	case []byte:
+		srcCopy := make([]byte, len(src))
+		copy(srcCopy, src)
+		return dst.DecodeText(nil, srcCopy)
+	}
+
+	return fmt.Errorf("cannot scan %T", src)
+}
+
+// Value implements the database/sql/driver Valuer interface.
+func (src Box) Value() (driver.Value, error) {
+	return EncodeValueText(src)
+}