💯Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving
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validator/baked_in.go

849 lines
26 KiB

package validator
import (
"fmt"
"net"
"net/url"
"reflect"
"strings"
"time"
"unicode/utf8"
)
// BakedInValidators is the default map of ValidationFunc
// you can add, remove or even replace items to suite your needs,
// or even disregard and use your own map if so desired.
var BakedInValidators = map[string]Func{
"required": hasValue,
"len": hasLengthOf,
"min": hasMinOf,
"max": hasMaxOf,
"eq": isEq,
"ne": isNe,
"lt": isLt,
"lte": isLte,
"gt": isGt,
"gte": isGte,
"eqfield": isEqField,
"eqcsfield": isEqCrossStructField,
"necsfield": isNeCrossStructField,
"nefield": isNeField,
"gtefield": isGteField,
"gtfield": isGtField,
"ltefield": isLteField,
"ltfield": isLtField,
"alpha": isAlpha,
"alphanum": isAlphanum,
"numeric": isNumeric,
"number": isNumber,
"hexadecimal": isHexadecimal,
"hexcolor": isHexcolor,
"rgb": isRgb,
"rgba": isRgba,
"hsl": isHsl,
"hsla": isHsla,
"email": isEmail,
"url": isURL,
"uri": isURI,
"base64": isBase64,
"contains": contains,
"containsany": containsAny,
"containsrune": containsRune,
"excludes": excludes,
"excludesall": excludesAll,
"excludesrune": excludesRune,
"isbn": isISBN,
"isbn10": isISBN10,
"isbn13": isISBN13,
"uuid": isUUID,
"uuid3": isUUID3,
"uuid4": isUUID4,
"uuid5": isUUID5,
"ascii": isASCII,
"printascii": isPrintableASCII,
"multibyte": hasMultiByteCharacter,
"datauri": isDataURI,
"latitude": isLatitude,
"longitude": isLongitude,
"ssn": isSSN,
"ipv4": isIPv4,
"ipv6": isIPv6,
"ip": isIP,
"mac": isMac,
}
func isMac(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
_, err := net.ParseMAC(field.String())
return err == nil
}
func isIPv4(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
ip := net.ParseIP(field.String())
return ip != nil && ip.To4() != nil
}
func isIPv6(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
ip := net.ParseIP(field.String())
return ip != nil && ip.To4() == nil
}
func isIP(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
ip := net.ParseIP(field.String())
return ip != nil
}
func isSSN(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
if field.Len() != 11 {
return false
}
return matchesRegex(sSNRegex, field.String())
}
func isLongitude(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(longitudeRegex, field.String())
}
func isLatitude(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(latitudeRegex, field.String())
}
func isDataURI(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
uri := strings.SplitN(field.String(), ",", 2)
if len(uri) != 2 {
return false
}
if !matchesRegex(dataURIRegex, uri[0]) {
return false
}
fld := reflect.ValueOf(uri[1])
return isBase64(v, topStruct, currentStruct, fld, fld.Type(), fld.Kind(), param)
}
func hasMultiByteCharacter(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
if field.Len() == 0 {
return true
}
return matchesRegex(multibyteRegex, field.String())
}
func isPrintableASCII(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(printableASCIIRegex, field.String())
}
func isASCII(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(aSCIIRegex, field.String())
}
func isUUID5(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(uUID5Regex, field.String())
}
func isUUID4(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(uUID4Regex, field.String())
}
func isUUID3(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(uUID3Regex, field.String())
}
func isUUID(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(uUIDRegex, field.String())
}
func isISBN(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return isISBN10(v, topStruct, currentStruct, field, fieldType, fieldKind, param) || isISBN13(v, topStruct, currentStruct, field, fieldType, fieldKind, param)
}
func isISBN13(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
s := strings.Replace(strings.Replace(field.String(), "-", "", 4), " ", "", 4)
if !matchesRegex(iSBN13Regex, s) {
return false
}
var checksum int32
var i int32
factor := []int32{1, 3}
for i = 0; i < 12; i++ {
checksum += factor[i%2] * int32(s[i]-'0')
}
if (int32(s[12]-'0'))-((10-(checksum%10))%10) == 0 {
return true
}
return false
}
func isISBN10(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
s := strings.Replace(strings.Replace(field.String(), "-", "", 3), " ", "", 3)
if !matchesRegex(iSBN10Regex, s) {
return false
}
var checksum int32
var i int32
for i = 0; i < 9; i++ {
checksum += (i + 1) * int32(s[i]-'0')
}
if s[9] == 'X' {
checksum += 10 * 10
} else {
checksum += 10 * int32(s[9]-'0')
}
if checksum%11 == 0 {
return true
}
return false
}
func excludesRune(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return !containsRune(v, topStruct, currentStruct, field, fieldType, fieldKind, param)
}
func excludesAll(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return !containsAny(v, topStruct, currentStruct, field, fieldType, fieldKind, param)
}
func excludes(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return !contains(v, topStruct, currentStruct, field, fieldType, fieldKind, param)
}
func containsRune(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
r, _ := utf8.DecodeRuneInString(param)
return strings.ContainsRune(field.String(), r)
}
func containsAny(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return strings.ContainsAny(field.String(), param)
}
func contains(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return strings.Contains(field.String(), param)
}
func isNeField(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return !isEqField(v, topStruct, currentStruct, field, fieldType, fieldKind, param)
}
func isNe(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return !isEq(v, topStruct, currentStruct, field, fieldType, fieldKind, param)
}
func isNeCrossStructField(v *Validate, topStruct reflect.Value, current reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return !isEqCrossStructField(v, topStruct, current, field, fieldType, fieldKind, param)
}
func isEqCrossStructField(v *Validate, topStruct reflect.Value, current reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
topField, topKind, ok := v.getStructFieldOK(topStruct, param)
if !ok || topKind != fieldKind {
return false
}
switch fieldKind {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return topField.Int() == field.Int()
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return topField.Uint() == field.Uint()
case reflect.Float32, reflect.Float64:
return topField.Float() == field.Float()
case reflect.Slice, reflect.Map, reflect.Array:
return int64(topField.Len()) == int64(field.Len())
case reflect.Struct:
// Not Same underlying type i.e. struct and time
if fieldType != topField.Type() {
return false
}
if fieldType == timeType {
t := field.Interface().(time.Time)
fieldTime := topField.Interface().(time.Time)
return fieldTime.Equal(t)
}
}
// default reflect.String:
return topField.String() == current.String()
}
func isEqField(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
currentField, currentKind, ok := v.getStructFieldOK(currentStruct, param)
if !ok || currentKind != fieldKind {
return false
}
switch fieldKind {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return field.Int() == currentField.Int()
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return field.Uint() == currentField.Uint()
case reflect.Float32, reflect.Float64:
return field.Float() == currentField.Float()
case reflect.Slice, reflect.Map, reflect.Array:
return int64(field.Len()) == int64(currentField.Len())
case reflect.Struct:
// Not Same underlying type i.e. struct and time
if fieldType != currentField.Type() {
return false
}
if fieldType == timeType {
t := currentField.Interface().(time.Time)
fieldTime := field.Interface().(time.Time)
return fieldTime.Equal(t)
}
}
// default reflect.String:
return field.String() == currentField.String()
}
func isEq(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
switch fieldKind {
case reflect.String:
return field.String() == param
case reflect.Slice, reflect.Map, reflect.Array:
p := asInt(param)
return int64(field.Len()) == p
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
p := asInt(param)
return field.Int() == p
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
p := asUint(param)
return field.Uint() == p
case reflect.Float32, reflect.Float64:
p := asFloat(param)
return field.Float() == p
}
panic(fmt.Sprintf("Bad field type %T", field.Interface()))
}
func isBase64(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(base64Regex, field.String())
}
func isURI(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
switch fieldKind {
case reflect.String:
_, err := url.ParseRequestURI(field.String())
return err == nil
}
panic(fmt.Sprintf("Bad field type %T", field.Interface()))
}
func isURL(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
switch fieldKind {
case reflect.String:
url, err := url.ParseRequestURI(field.String())
if err != nil {
return false
}
if len(url.Scheme) == 0 {
return false
}
return err == nil
}
panic(fmt.Sprintf("Bad field type %T", field.Interface()))
}
func isEmail(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(emailRegex, field.String())
}
func isHsla(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(hslaRegex, field.String())
}
func isHsl(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(hslRegex, field.String())
}
func isRgba(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(rgbaRegex, field.String())
}
func isRgb(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(rgbRegex, field.String())
}
func isHexcolor(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(hexcolorRegex, field.String())
}
func isHexadecimal(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(hexadecimalRegex, field.String())
}
func isNumber(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(numberRegex, field.String())
}
func isNumeric(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(numericRegex, field.String())
}
func isAlphanum(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(alphaNumericRegex, field.String())
}
func isAlpha(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return matchesRegex(alphaRegex, field.String())
}
func hasValue(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
switch fieldKind {
case reflect.Slice, reflect.Map, reflect.Ptr, reflect.Interface, reflect.Chan, reflect.Func:
return !field.IsNil()
default:
return field.IsValid() && field.Interface() != reflect.Zero(fieldType).Interface()
}
}
func isGteField(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
currentField, currentKind, ok := v.getStructFieldOK(currentStruct, param)
if !ok || currentKind != fieldKind {
return false
}
switch fieldKind {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return field.Int() >= currentField.Int()
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return field.Uint() >= currentField.Uint()
case reflect.Float32, reflect.Float64:
return field.Float() >= currentField.Float()
case reflect.Struct:
// Not Same underlying type i.e. struct and time
if fieldType != currentField.Type() {
return false
}
if fieldType == timeType {
t := currentField.Interface().(time.Time)
fieldTime := field.Interface().(time.Time)
return fieldTime.After(t) || fieldTime.Equal(t)
}
}
// default reflect.String
return len(field.String()) >= len(currentField.String())
}
func isGtField(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
currentField, currentKind, ok := v.getStructFieldOK(currentStruct, param)
if !ok || currentKind != fieldKind {
return false
}
switch fieldKind {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return field.Int() > currentField.Int()
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return field.Uint() > currentField.Uint()
case reflect.Float32, reflect.Float64:
return field.Float() > currentField.Float()
case reflect.Struct:
// Not Same underlying type i.e. struct and time
if fieldType != currentField.Type() {
return false
}
if fieldType == timeType {
t := currentField.Interface().(time.Time)
fieldTime := field.Interface().(time.Time)
return fieldTime.After(t)
}
}
// default reflect.String
return len(field.String()) > len(currentField.String())
}
func isGte(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
switch fieldKind {
case reflect.String:
p := asInt(param)
return int64(utf8.RuneCountInString(field.String())) >= p
case reflect.Slice, reflect.Map, reflect.Array:
p := asInt(param)
return int64(field.Len()) >= p
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
p := asInt(param)
return field.Int() >= p
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
p := asUint(param)
return field.Uint() >= p
case reflect.Float32, reflect.Float64:
p := asFloat(param)
return field.Float() >= p
case reflect.Struct:
if fieldType == timeType || fieldType == timePtrType {
now := time.Now().UTC()
t := field.Interface().(time.Time)
return t.After(now) || t.Equal(now)
}
}
panic(fmt.Sprintf("Bad field type %T", field.Interface()))
}
func isGt(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
switch fieldKind {
case reflect.String:
p := asInt(param)
return int64(utf8.RuneCountInString(field.String())) > p
case reflect.Slice, reflect.Map, reflect.Array:
p := asInt(param)
return int64(field.Len()) > p
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
p := asInt(param)
return field.Int() > p
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
p := asUint(param)
return field.Uint() > p
case reflect.Float32, reflect.Float64:
p := asFloat(param)
return field.Float() > p
case reflect.Struct:
if field.Type() == timeType || field.Type() == timePtrType {
return field.Interface().(time.Time).After(time.Now().UTC())
}
}
panic(fmt.Sprintf("Bad field type %T", field.Interface()))
}
// length tests whether a variable's length is equal to a given
// value. For strings it tests the number of characters whereas
// for maps and slices it tests the number of items.
func hasLengthOf(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
switch fieldKind {
case reflect.String:
p := asInt(param)
return int64(utf8.RuneCountInString(field.String())) == p
case reflect.Slice, reflect.Map, reflect.Array:
p := asInt(param)
return int64(field.Len()) == p
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
p := asInt(param)
return field.Int() == p
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
p := asUint(param)
return field.Uint() == p
case reflect.Float32, reflect.Float64:
p := asFloat(param)
return field.Float() == p
}
panic(fmt.Sprintf("Bad field type %T", field.Interface()))
}
// min tests whether a variable value is larger or equal to a given
// number. For number types, it's a simple lesser-than test; for
// strings it tests the number of characters whereas for maps
// and slices it tests the number of items.
func hasMinOf(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return isGte(v, topStruct, currentStruct, field, fieldType, fieldKind, param)
}
func isLteField(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
currentField, currentKind, ok := v.getStructFieldOK(currentStruct, param)
if !ok || currentKind != fieldKind {
return false
}
switch fieldKind {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return field.Int() <= currentField.Int()
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return field.Uint() <= currentField.Uint()
case reflect.Float32, reflect.Float64:
return field.Float() <= currentField.Float()
case reflect.Struct:
// Not Same underlying type i.e. struct and time
if fieldType != currentField.Type() {
return false
}
if fieldType == timeType {
t := currentField.Interface().(time.Time)
fieldTime := field.Interface().(time.Time)
return fieldTime.Before(t) || fieldTime.Equal(t)
}
}
// default reflect.String
return len(field.String()) <= len(currentField.String())
}
func isLtField(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
currentField, currentKind, ok := v.getStructFieldOK(currentStruct, param)
if !ok || currentKind != fieldKind {
return false
}
switch fieldKind {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return field.Int() < currentField.Int()
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return field.Uint() < currentField.Uint()
case reflect.Float32, reflect.Float64:
return field.Float() < currentField.Float()
case reflect.Struct:
// Not Same underlying type i.e. struct and time
if fieldType != currentField.Type() {
return false
}
if fieldType == timeType {
t := currentField.Interface().(time.Time)
fieldTime := field.Interface().(time.Time)
return fieldTime.Before(t)
}
}
// default reflect.String
return len(field.String()) < len(currentField.String())
}
func isLte(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
switch fieldKind {
case reflect.String:
p := asInt(param)
return int64(utf8.RuneCountInString(field.String())) <= p
case reflect.Slice, reflect.Map, reflect.Array:
p := asInt(param)
return int64(field.Len()) <= p
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
p := asInt(param)
return field.Int() <= p
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
p := asUint(param)
return field.Uint() <= p
case reflect.Float32, reflect.Float64:
p := asFloat(param)
return field.Float() <= p
case reflect.Struct:
if fieldType == timeType || fieldType == timePtrType {
now := time.Now().UTC()
t := field.Interface().(time.Time)
return t.Before(now) || t.Equal(now)
}
}
panic(fmt.Sprintf("Bad field type %T", field.Interface()))
}
func isLt(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
switch fieldKind {
case reflect.String:
p := asInt(param)
return int64(utf8.RuneCountInString(field.String())) < p
case reflect.Slice, reflect.Map, reflect.Array:
p := asInt(param)
return int64(field.Len()) < p
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
p := asInt(param)
return field.Int() < p
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
p := asUint(param)
return field.Uint() < p
case reflect.Float32, reflect.Float64:
p := asFloat(param)
return field.Float() < p
case reflect.Struct:
if field.Type() == timeType || field.Type() == timePtrType {
return field.Interface().(time.Time).Before(time.Now().UTC())
}
}
panic(fmt.Sprintf("Bad field type %T", field.Interface()))
}
// max tests whether a variable value is lesser than a given
// value. For numbers, it's a simple lesser-than test; for
// strings it tests the number of characters whereas for maps
// and slices it tests the number of items.
func hasMaxOf(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldType reflect.Type, fieldKind reflect.Kind, param string) bool {
return isLte(v, topStruct, currentStruct, field, fieldType, fieldKind, param)
}