wip: 初始阶段

internal/sqlType/error.go

@@ -0,0 +1,9 @@
+package sqlType
+
+import "errors"
+
+var (
+	ErrConvertScanVal = errors.New("convert scan val to str err")
+	ErrInvalidScanVal = errors.New("scan val invalid")
+	ErrConvertVal     = errors.New("convert err")
+)

internal/sqlType/jsonb.go

@@ -0,0 +1,76 @@
+package sqlType
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+
+	"github.com/jackc/pgtype"
+)
+
+type JSONB struct {
+	Val   pgtype.JSONB
+	Valid bool
+}
+
+func NewJSONB(v interface{}) JSONB {
+	j := new(JSONB)
+	j.Val = pgtype.JSONB{}
+	if err := j.Val.Set(v); err == nil {
+		j.Valid = true
+		return *j
+	}
+
+	return *j
+}
+
+func (j *JSONB) Set(value interface{}) error {
+	if err := j.Val.Set(value); err != nil {
+		j.Valid = false
+		return err
+	}
+
+	j.Valid = true
+
+	return nil
+}
+
+func (j *JSONB) Bind(model interface{}) error {
+	return j.Val.AssignTo(model)
+}
+
+func (j *JSONB) Scan(value interface{}) error {
+	j.Val = pgtype.JSONB{}
+	if value == nil {
+		j.Valid = false
+		return nil
+	}
+
+	j.Valid = true
+
+	return j.Val.Scan(value)
+}
+
+func (j JSONB) Value() (driver.Value, error) {
+	if j.Valid {
+		return j.Val.Value()
+	}
+
+	return nil, nil
+}
+
+func (j JSONB) MarshalJSON() ([]byte, error) {
+	if j.Valid {
+		return j.Val.MarshalJSON()
+	}
+
+	return json.Marshal(nil)
+}
+
+func (j *JSONB) UnmarshalJSON(b []byte) error {
+	if string(b) == "null" {
+		j.Valid = false
+		return j.Val.UnmarshalJSON(b)
+	}
+
+	return j.Val.UnmarshalJSON(b)
+}

internal/sqlType/num_slice.go

@@ -0,0 +1,71 @@
+package sqlType
+
+import (
+	"database/sql/driver"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/spf13/cast"
+)
+
+type NumSlice[T ~int | ~int64 | ~uint | ~uint64] []T
+
+func (n *NumSlice[T]) Scan(val interface{}) error {
+	str, ok := val.(string)
+	if !ok {
+		return ErrConvertScanVal
+	}
+
+	length := len(str)
+
+	if length <= 0 {
+		*n = make(NumSlice[T], 0)
+		return nil
+	}
+
+	if str[0] != '{' || str[length-1] != '}' {
+		return ErrInvalidScanVal
+	}
+
+	str = str[1 : length-1]
+	if len(str) == 0 {
+		*n = make(NumSlice[T], 0)
+		return nil
+	}
+
+	numStrs := strings.Split(str, ",")
+	nums := make([]T, len(numStrs))
+
+	for idx := range numStrs {
+		num, err := cast.ToInt64E(strings.TrimSpace(numStrs[idx]))
+		if err != nil {
+			return fmt.Errorf("%w: can't convert to %T", ErrConvertVal, T(0))
+		}
+
+		nums[idx] = T(num)
+	}
+
+	*n = nums
+
+	return nil
+}
+
+func (n NumSlice[T]) Value() (driver.Value, error) {
+	if n == nil {
+		return "{}", nil
+	}
+
+	if len(n) == 0 {
+		return "{}", nil
+	}
+
+	ss := make([]string, 0, len(n))
+	for idx := range n {
+		ss = append(ss, strconv.Itoa(int(n[idx])))
+	}
+
+	s := strings.Join(ss, ", ")
+
+	return fmt.Sprintf("{%s}", s), nil
+}

internal/sqlType/string_slice.go

@@ -0,0 +1,107 @@
+package sqlType
+
+import (
+	"bytes"
+	"database/sql/driver"
+	"encoding/json"
+)
+
+type StrSlice []string
+
+func (s *StrSlice) Scan(val interface{}) error {
+
+	str, ok := val.(string)
+	if !ok {
+		return ErrConvertScanVal
+	}
+
+	if len(str) < 2 {
+		return nil
+	}
+
+	bs := make([]byte, 0, 128)
+	bss := make([]byte, 0, 2*len(str))
+
+	quoteCount := 0
+
+	for idx := 1; idx < len(str)-1; idx++ {
+		quote := str[idx]
+		switch quote {
+		case 44:
+			if quote == 44 && str[idx-1] != 92 && quoteCount == 0 {
+				if len(bs) > 0 {
+					if !(bs[0] == 34 && bs[len(bs)-1] == 34) {
+						bs = append([]byte{34}, bs...)
+						bs = append(bs, 34)
+					}
+
+					bss = append(bss, bs...)
+					bss = append(bss, 44)
+				}
+				bs = bs[:0]
+			} else {
+				bs = append(bs, quote)
+			}
+		case 34:
+			if str[idx-1] != 92 {
+				quoteCount = (quoteCount + 1) % 2
+			}
+			bs = append(bs, quote)
+		default:
+			bs = append(bs, quote)
+		}
+
+	}
+
+	if len(bs) > 0 {
+		if !(bs[0] == 34 && bs[len(bs)-1] == 34) {
+			bs = append([]byte{34}, bs...)
+			bs = append(bs, 34)
+		}
+
+		bss = append(bss, bs...)
+	} else {
+		if len(bss) > 2 {
+			bss = bss[:len(bss)-2]
+		}
+	}
+
+	bss = append([]byte{'['}, append(bss, ']')...)
+
+	if err := json.Unmarshal(bss, s); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s StrSlice) Value() (driver.Value, error) {
+	if s == nil {
+		return "{}", nil
+	}
+
+	if len(s) == 0 {
+		return "{}", nil
+	}
+
+	buf := &bytes.Buffer{}
+
+	encoder := json.NewEncoder(buf)
+	encoder.SetEscapeHTML(false)
+
+	if err := encoder.Encode(s); err != nil {
+		return "{}", err
+	}
+
+	bs := buf.Bytes()
+
+	bs[0] = '{'
+
+	if bs[len(bs)-1] == 10 {
+		bs = bs[:len(bs)-1]
+	}
+
+	bs[len(bs)-1] = '}'
+
+	return string(bs), nil
+}