123 lines
4.4 KiB
Go
123 lines
4.4 KiB
Go
package query
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"reflect"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/lbryio/lbry.go/extras/errors"
|
|
"github.com/lbryio/lbry.go/extras/null"
|
|
)
|
|
|
|
func InterpolateParams(query string, args ...interface{}) (string, error) {
|
|
for i := 0; i < len(args); i++ {
|
|
field := reflect.ValueOf(args[i])
|
|
|
|
if value, ok := field.Interface().(time.Time); ok {
|
|
query = strings.Replace(query, "?", `"`+value.Format("2006-01-02 15:04:05")+`"`, 1)
|
|
} else if nullable, ok := field.Interface().(null.Nullable); ok {
|
|
if nullable.IsNull() {
|
|
query = strings.Replace(query, "?", "NULL", 1)
|
|
} else {
|
|
switch field.Type() {
|
|
case reflect.TypeOf(null.Time{}):
|
|
query = strings.Replace(query, "?", `"`+field.Interface().(null.Time).Time.Format("2006-01-02 15:04:05")+`"`, 1)
|
|
case reflect.TypeOf(null.Int{}):
|
|
query = strings.Replace(query, "?", strconv.FormatInt(int64(field.Interface().(null.Int).Int), 10), 1)
|
|
case reflect.TypeOf(null.Int8{}):
|
|
query = strings.Replace(query, "?", strconv.FormatInt(int64(field.Interface().(null.Int8).Int8), 10), 1)
|
|
case reflect.TypeOf(null.Int16{}):
|
|
query = strings.Replace(query, "?", strconv.FormatInt(int64(field.Interface().(null.Int16).Int16), 10), 1)
|
|
case reflect.TypeOf(null.Int32{}):
|
|
query = strings.Replace(query, "?", strconv.FormatInt(int64(field.Interface().(null.Int32).Int32), 10), 1)
|
|
case reflect.TypeOf(null.Int64{}):
|
|
query = strings.Replace(query, "?", strconv.FormatInt(field.Interface().(null.Int64).Int64, 10), 1)
|
|
case reflect.TypeOf(null.Uint{}):
|
|
query = strings.Replace(query, "?", strconv.FormatUint(uint64(field.Interface().(null.Uint).Uint), 10), 1)
|
|
case reflect.TypeOf(null.Uint8{}):
|
|
query = strings.Replace(query, "?", strconv.FormatUint(uint64(field.Interface().(null.Uint8).Uint8), 10), 1)
|
|
case reflect.TypeOf(null.Uint16{}):
|
|
query = strings.Replace(query, "?", strconv.FormatUint(uint64(field.Interface().(null.Uint16).Uint16), 10), 1)
|
|
case reflect.TypeOf(null.Uint32{}):
|
|
query = strings.Replace(query, "?", strconv.FormatUint(uint64(field.Interface().(null.Uint32).Uint32), 10), 1)
|
|
case reflect.TypeOf(null.Uint64{}):
|
|
query = strings.Replace(query, "?", strconv.FormatUint(field.Interface().(null.Uint64).Uint64, 10), 1)
|
|
case reflect.TypeOf(null.String{}):
|
|
query = strings.Replace(query, "?", `"`+field.Interface().(null.String).String+`"`, 1)
|
|
case reflect.TypeOf(null.Bool{}):
|
|
if field.Interface().(null.Bool).Bool {
|
|
query = strings.Replace(query, "?", "1", 1)
|
|
} else {
|
|
query = strings.Replace(query, "?", "0", 1)
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
switch field.Kind() {
|
|
case reflect.Bool:
|
|
boolString := "0"
|
|
if field.Bool() {
|
|
boolString = "1"
|
|
}
|
|
query = strings.Replace(query, "?", boolString, 1)
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
query = strings.Replace(query, "?", strconv.FormatInt(field.Int(), 10), 1)
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
|
query = strings.Replace(query, "?", strconv.FormatUint(field.Uint(), 10), 1)
|
|
case reflect.Float32, reflect.Float64:
|
|
query = strings.Replace(query, "?", strconv.FormatFloat(field.Float(), 'f', -1, 64), 1)
|
|
case reflect.String:
|
|
query = strings.Replace(query, "?", `"`+field.String()+`"`, 1)
|
|
case reflect.Slice:
|
|
query = strings.Replace(query, "?", `x`+fmt.Sprintf("%0x", field), 1)
|
|
default:
|
|
return "", errors.Err("dont know how to interpolate type " + field.Type().String())
|
|
}
|
|
}
|
|
}
|
|
|
|
// tabs to spaces, for easier copying into mysql prompt
|
|
query = strings.Replace(query, "\t", " ", -1)
|
|
|
|
return query, nil
|
|
}
|
|
|
|
// Qs is a shortcut for one group of positional placeholders
|
|
func Qs(count int) string {
|
|
return placeholders(false, count, 1, 1)
|
|
}
|
|
|
|
// placeholders creates indexed or positional placeholders, in groups, with different starts
|
|
func placeholders(indexPlaceholders bool, count int, start int, group int) string {
|
|
buf := bytes.Buffer{}
|
|
|
|
if start == 0 || group == 0 {
|
|
panic("invalid start or group numbers supplied.")
|
|
}
|
|
|
|
if group > 1 {
|
|
buf.WriteByte('(')
|
|
}
|
|
for i := 0; i < count; i++ {
|
|
if i != 0 {
|
|
if group > 1 && i%group == 0 {
|
|
buf.WriteString("),(")
|
|
} else {
|
|
buf.WriteByte(',')
|
|
}
|
|
}
|
|
if indexPlaceholders {
|
|
buf.WriteString(fmt.Sprintf("$%d", start+i))
|
|
} else {
|
|
buf.WriteByte('?')
|
|
}
|
|
}
|
|
if group > 1 {
|
|
buf.WriteByte(')')
|
|
}
|
|
|
|
return buf.String()
|
|
}
|