mirror of
https://github.com/woodpecker-ci/woodpecker.git
synced 2024-12-03 07:06:30 +00:00
797 lines
24 KiB
Go
797 lines
24 KiB
Go
/**
|
|
* Package validator
|
|
*
|
|
* MISC:
|
|
* - anonymous structs - they don't have names so expect the Struct name within StructErrors to be blank
|
|
*
|
|
*/
|
|
|
|
package validator
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"fmt"
|
|
"reflect"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
const (
|
|
utf8HexComma = "0x2C"
|
|
utf8Pipe = "0x7C"
|
|
tagSeparator = ","
|
|
orSeparator = "|"
|
|
tagKeySeparator = "="
|
|
structOnlyTag = "structonly"
|
|
noStructLevelTag = "nostructlevel"
|
|
omitempty = "omitempty"
|
|
skipValidationTag = "-"
|
|
diveTag = "dive"
|
|
existsTag = "exists"
|
|
fieldErrMsg = "Key: '%s' Error:Field validation for '%s' failed on the '%s' tag"
|
|
arrayIndexFieldName = "%s" + leftBracket + "%d" + rightBracket
|
|
mapIndexFieldName = "%s" + leftBracket + "%v" + rightBracket
|
|
invalidValidation = "Invalid validation tag on field %s"
|
|
undefinedValidation = "Undefined validation function on field %s"
|
|
validatorNotInitialized = "Validator instance not initialized"
|
|
fieldNameRequired = "Field Name Required"
|
|
tagRequired = "Tag Required"
|
|
)
|
|
|
|
var (
|
|
timeType = reflect.TypeOf(time.Time{})
|
|
timePtrType = reflect.TypeOf(&time.Time{})
|
|
emptyStructPtr = new(struct{})
|
|
)
|
|
|
|
// StructLevel contains all of the information and helper methods
|
|
// for reporting errors during struct level validation
|
|
type StructLevel struct {
|
|
TopStruct reflect.Value
|
|
CurrentStruct reflect.Value
|
|
errPrefix string
|
|
nsPrefix string
|
|
errs ValidationErrors
|
|
v *Validate
|
|
}
|
|
|
|
// ReportValidationErrors accepts the key relative to the top level struct and validatin errors.
|
|
// Example: had a triple nested struct User, ContactInfo, Country and ran errs := validate.Struct(country)
|
|
// from within a User struct level validation would call this method like so:
|
|
// ReportValidationErrors("ContactInfo.", errs)
|
|
// NOTE: relativeKey can contain both the Field Relative and Custom name relative paths
|
|
// i.e. ReportValidationErrors("ContactInfo.|cInfo", errs) where cInfo represents say the JSON name of
|
|
// the relative path; this will be split into 2 variables in the next valiator version.
|
|
func (sl *StructLevel) ReportValidationErrors(relativeKey string, errs ValidationErrors) {
|
|
for _, e := range errs {
|
|
|
|
idx := strings.Index(relativeKey, "|")
|
|
var rel string
|
|
var cRel string
|
|
|
|
if idx != -1 {
|
|
rel = relativeKey[:idx]
|
|
cRel = relativeKey[idx+1:]
|
|
} else {
|
|
rel = relativeKey
|
|
}
|
|
|
|
key := sl.errPrefix + rel + e.Field
|
|
|
|
e.FieldNamespace = key
|
|
e.NameNamespace = sl.nsPrefix + cRel + e.Name
|
|
|
|
sl.errs[key] = e
|
|
}
|
|
}
|
|
|
|
// ReportError reports an error just by passing the field and tag information
|
|
// NOTE: tag can be an existing validation tag or just something you make up
|
|
// and precess on the flip side it's up to you.
|
|
func (sl *StructLevel) ReportError(field reflect.Value, fieldName string, customName string, tag string) {
|
|
|
|
field, kind := sl.v.ExtractType(field)
|
|
|
|
if fieldName == blank {
|
|
panic(fieldNameRequired)
|
|
}
|
|
|
|
if customName == blank {
|
|
customName = fieldName
|
|
}
|
|
|
|
if tag == blank {
|
|
panic(tagRequired)
|
|
}
|
|
|
|
ns := sl.errPrefix + fieldName
|
|
|
|
switch kind {
|
|
case reflect.Invalid:
|
|
sl.errs[ns] = &FieldError{
|
|
FieldNamespace: ns,
|
|
NameNamespace: sl.nsPrefix + customName,
|
|
Name: customName,
|
|
Field: fieldName,
|
|
Tag: tag,
|
|
ActualTag: tag,
|
|
Param: blank,
|
|
Kind: kind,
|
|
}
|
|
default:
|
|
sl.errs[ns] = &FieldError{
|
|
FieldNamespace: ns,
|
|
NameNamespace: sl.nsPrefix + customName,
|
|
Name: customName,
|
|
Field: fieldName,
|
|
Tag: tag,
|
|
ActualTag: tag,
|
|
Param: blank,
|
|
Value: field.Interface(),
|
|
Kind: kind,
|
|
Type: field.Type(),
|
|
}
|
|
}
|
|
}
|
|
|
|
// Validate contains the validator settings passed in using the Config struct
|
|
type Validate struct {
|
|
tagName string
|
|
fieldNameTag string
|
|
validationFuncs map[string]Func
|
|
structLevelFuncs map[reflect.Type]StructLevelFunc
|
|
customTypeFuncs map[reflect.Type]CustomTypeFunc
|
|
aliasValidators map[string]string
|
|
hasCustomFuncs bool
|
|
hasAliasValidators bool
|
|
hasStructLevelFuncs bool
|
|
tagCache *tagCacheMap
|
|
structCache *structCacheMap
|
|
errsPool *sync.Pool
|
|
}
|
|
|
|
func (v *Validate) initCheck() {
|
|
if v == nil {
|
|
panic(validatorNotInitialized)
|
|
}
|
|
}
|
|
|
|
// Config contains the options that a Validator instance will use.
|
|
// It is passed to the New() function
|
|
type Config struct {
|
|
TagName string
|
|
FieldNameTag string
|
|
}
|
|
|
|
// CustomTypeFunc allows for overriding or adding custom field type handler functions
|
|
// field = field value of the type to return a value to be validated
|
|
// example Valuer from sql drive see https://golang.org/src/database/sql/driver/types.go?s=1210:1293#L29
|
|
type CustomTypeFunc func(field reflect.Value) interface{}
|
|
|
|
// Func accepts all values needed for file and cross field validation
|
|
// v = validator instance, needed but some built in functions for it's custom types
|
|
// topStruct = top level struct when validating by struct otherwise nil
|
|
// currentStruct = current level struct when validating by struct otherwise optional comparison value
|
|
// field = field value for validation
|
|
// param = parameter used in validation i.e. gt=0 param would be 0
|
|
type Func func(v *Validate, topStruct reflect.Value, currentStruct reflect.Value, field reflect.Value, fieldtype reflect.Type, fieldKind reflect.Kind, param string) bool
|
|
|
|
// StructLevelFunc accepts all values needed for struct level validation
|
|
type StructLevelFunc func(v *Validate, structLevel *StructLevel)
|
|
|
|
// ValidationErrors is a type of map[string]*FieldError
|
|
// it exists to allow for multiple errors to be passed from this library
|
|
// and yet still subscribe to the error interface
|
|
type ValidationErrors map[string]*FieldError
|
|
|
|
// Error is intended for use in development + debugging and not intended to be a production error message.
|
|
// It allows ValidationErrors to subscribe to the Error interface.
|
|
// All information to create an error message specific to your application is contained within
|
|
// the FieldError found within the ValidationErrors map
|
|
func (ve ValidationErrors) Error() string {
|
|
|
|
buff := bytes.NewBufferString(blank)
|
|
|
|
for key, err := range ve {
|
|
buff.WriteString(fmt.Sprintf(fieldErrMsg, key, err.Field, err.Tag))
|
|
buff.WriteString("\n")
|
|
}
|
|
|
|
return strings.TrimSpace(buff.String())
|
|
}
|
|
|
|
// FieldError contains a single field's validation error along
|
|
// with other properties that may be needed for error message creation
|
|
type FieldError struct {
|
|
FieldNamespace string
|
|
NameNamespace string
|
|
Field string
|
|
Name string
|
|
Tag string
|
|
ActualTag string
|
|
Kind reflect.Kind
|
|
Type reflect.Type
|
|
Param string
|
|
Value interface{}
|
|
}
|
|
|
|
// New creates a new Validate instance for use.
|
|
func New(config *Config) *Validate {
|
|
|
|
v := &Validate{
|
|
tagName: config.TagName,
|
|
fieldNameTag: config.FieldNameTag,
|
|
tagCache: &tagCacheMap{m: map[string]*cachedTag{}},
|
|
structCache: &structCacheMap{m: map[reflect.Type]*cachedStruct{}},
|
|
errsPool: &sync.Pool{New: func() interface{} {
|
|
return ValidationErrors{}
|
|
}}}
|
|
|
|
if len(v.aliasValidators) == 0 {
|
|
// must copy alias validators for separate validations to be used in each validator instance
|
|
v.aliasValidators = map[string]string{}
|
|
for k, val := range bakedInAliasValidators {
|
|
v.RegisterAliasValidation(k, val)
|
|
}
|
|
}
|
|
|
|
if len(v.validationFuncs) == 0 {
|
|
// must copy validators for separate validations to be used in each instance
|
|
v.validationFuncs = map[string]Func{}
|
|
for k, val := range bakedInValidators {
|
|
v.RegisterValidation(k, val)
|
|
}
|
|
}
|
|
|
|
return v
|
|
}
|
|
|
|
// RegisterStructValidation registers a StructLevelFunc against a number of types
|
|
// NOTE: this method is not thread-safe it is intended that these all be registered prior to any validation
|
|
func (v *Validate) RegisterStructValidation(fn StructLevelFunc, types ...interface{}) {
|
|
v.initCheck()
|
|
|
|
if v.structLevelFuncs == nil {
|
|
v.structLevelFuncs = map[reflect.Type]StructLevelFunc{}
|
|
}
|
|
|
|
for _, t := range types {
|
|
v.structLevelFuncs[reflect.TypeOf(t)] = fn
|
|
}
|
|
|
|
v.hasStructLevelFuncs = true
|
|
}
|
|
|
|
// RegisterValidation adds a validation Func to a Validate's map of validators denoted by the key
|
|
// NOTE: if the key already exists, the previous validation function will be replaced.
|
|
// NOTE: this method is not thread-safe it is intended that these all be registered prior to any validation
|
|
func (v *Validate) RegisterValidation(key string, fn Func) error {
|
|
v.initCheck()
|
|
|
|
if key == blank {
|
|
return errors.New("Function Key cannot be empty")
|
|
}
|
|
|
|
if fn == nil {
|
|
return errors.New("Function cannot be empty")
|
|
}
|
|
|
|
_, ok := restrictedTags[key]
|
|
|
|
if ok || strings.ContainsAny(key, restrictedTagChars) {
|
|
panic(fmt.Sprintf(restrictedTagErr, key))
|
|
}
|
|
|
|
v.validationFuncs[key] = fn
|
|
|
|
return nil
|
|
}
|
|
|
|
// RegisterCustomTypeFunc registers a CustomTypeFunc against a number of types
|
|
// NOTE: this method is not thread-safe it is intended that these all be registered prior to any validation
|
|
func (v *Validate) RegisterCustomTypeFunc(fn CustomTypeFunc, types ...interface{}) {
|
|
v.initCheck()
|
|
|
|
if v.customTypeFuncs == nil {
|
|
v.customTypeFuncs = map[reflect.Type]CustomTypeFunc{}
|
|
}
|
|
|
|
for _, t := range types {
|
|
v.customTypeFuncs[reflect.TypeOf(t)] = fn
|
|
}
|
|
|
|
v.hasCustomFuncs = true
|
|
}
|
|
|
|
// RegisterAliasValidation registers a mapping of a single validationstag that
|
|
// defines a common or complex set of validation(s) to simplify adding validation
|
|
// to structs. NOTE: when returning an error the tag returned in FieldError will be
|
|
// the alias tag unless the dive tag is part of the alias; everything after the
|
|
// dive tag is not reported as the alias tag. Also the ActualTag in the before case
|
|
// will be the actual tag within the alias that failed.
|
|
// NOTE: this method is not thread-safe it is intended that these all be registered prior to any validation
|
|
func (v *Validate) RegisterAliasValidation(alias, tags string) {
|
|
v.initCheck()
|
|
|
|
_, ok := restrictedTags[alias]
|
|
|
|
if ok || strings.ContainsAny(alias, restrictedTagChars) {
|
|
panic(fmt.Sprintf(restrictedAliasErr, alias))
|
|
}
|
|
|
|
v.aliasValidators[alias] = tags
|
|
v.hasAliasValidators = true
|
|
}
|
|
|
|
// Field validates a single field using tag style validation and returns nil or ValidationErrors as type error.
|
|
// You will need to assert the error if it's not nil i.e. err.(validator.ValidationErrors) to access the map of errors.
|
|
// NOTE: it returns ValidationErrors instead of a single FieldError because this can also
|
|
// validate Array, Slice and maps fields which may contain more than one error
|
|
func (v *Validate) Field(field interface{}, tag string) error {
|
|
v.initCheck()
|
|
|
|
errs := v.errsPool.Get().(ValidationErrors)
|
|
fieldVal := reflect.ValueOf(field)
|
|
|
|
v.traverseField(fieldVal, fieldVal, fieldVal, blank, blank, errs, false, tag, blank, blank, false, false, nil, nil)
|
|
|
|
if len(errs) == 0 {
|
|
v.errsPool.Put(errs)
|
|
return nil
|
|
}
|
|
|
|
return errs
|
|
}
|
|
|
|
// FieldWithValue validates a single field, against another fields value using tag style validation and returns nil or ValidationErrors.
|
|
// You will need to assert the error if it's not nil i.e. err.(validator.ValidationErrors) to access the map of errors.
|
|
// NOTE: it returns ValidationErrors instead of a single FieldError because this can also
|
|
// validate Array, Slice and maps fields which may contain more than one error
|
|
func (v *Validate) FieldWithValue(val interface{}, field interface{}, tag string) error {
|
|
v.initCheck()
|
|
|
|
errs := v.errsPool.Get().(ValidationErrors)
|
|
topVal := reflect.ValueOf(val)
|
|
|
|
v.traverseField(topVal, topVal, reflect.ValueOf(field), blank, blank, errs, false, tag, blank, blank, false, false, nil, nil)
|
|
|
|
if len(errs) == 0 {
|
|
v.errsPool.Put(errs)
|
|
return nil
|
|
}
|
|
|
|
return errs
|
|
}
|
|
|
|
// StructPartial validates the fields passed in only, ignoring all others.
|
|
// Fields may be provided in a namespaced fashion relative to the struct provided
|
|
// i.e. NestedStruct.Field or NestedArrayField[0].Struct.Name and returns nil or ValidationErrors as error
|
|
// You will need to assert the error if it's not nil i.e. err.(validator.ValidationErrors) to access the map of errors.
|
|
func (v *Validate) StructPartial(current interface{}, fields ...string) error {
|
|
v.initCheck()
|
|
|
|
sv, _ := v.ExtractType(reflect.ValueOf(current))
|
|
name := sv.Type().Name()
|
|
m := map[string]*struct{}{}
|
|
|
|
if fields != nil {
|
|
for _, k := range fields {
|
|
|
|
flds := strings.Split(k, namespaceSeparator)
|
|
if len(flds) > 0 {
|
|
|
|
key := name + namespaceSeparator
|
|
for _, s := range flds {
|
|
|
|
idx := strings.Index(s, leftBracket)
|
|
|
|
if idx != -1 {
|
|
for idx != -1 {
|
|
key += s[:idx]
|
|
m[key] = emptyStructPtr
|
|
|
|
idx2 := strings.Index(s, rightBracket)
|
|
idx2++
|
|
key += s[idx:idx2]
|
|
m[key] = emptyStructPtr
|
|
s = s[idx2:]
|
|
idx = strings.Index(s, leftBracket)
|
|
}
|
|
} else {
|
|
|
|
key += s
|
|
m[key] = emptyStructPtr
|
|
}
|
|
|
|
key += namespaceSeparator
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
errs := v.errsPool.Get().(ValidationErrors)
|
|
|
|
v.tranverseStruct(sv, sv, sv, blank, blank, errs, true, len(m) != 0, false, m, false)
|
|
|
|
if len(errs) == 0 {
|
|
v.errsPool.Put(errs)
|
|
return nil
|
|
}
|
|
|
|
return errs
|
|
}
|
|
|
|
// StructExcept validates all fields except the ones passed in.
|
|
// Fields may be provided in a namespaced fashion relative to the struct provided
|
|
// i.e. NestedStruct.Field or NestedArrayField[0].Struct.Name and returns nil or ValidationErrors as error
|
|
// You will need to assert the error if it's not nil i.e. err.(validator.ValidationErrors) to access the map of errors.
|
|
func (v *Validate) StructExcept(current interface{}, fields ...string) error {
|
|
v.initCheck()
|
|
|
|
sv, _ := v.ExtractType(reflect.ValueOf(current))
|
|
name := sv.Type().Name()
|
|
m := map[string]*struct{}{}
|
|
|
|
for _, key := range fields {
|
|
m[name+namespaceSeparator+key] = emptyStructPtr
|
|
}
|
|
|
|
errs := v.errsPool.Get().(ValidationErrors)
|
|
|
|
v.tranverseStruct(sv, sv, sv, blank, blank, errs, true, len(m) != 0, true, m, false)
|
|
|
|
if len(errs) == 0 {
|
|
v.errsPool.Put(errs)
|
|
return nil
|
|
}
|
|
|
|
return errs
|
|
}
|
|
|
|
// Struct validates a structs exposed fields, and automatically validates nested structs, unless otherwise specified.
|
|
// it returns nil or ValidationErrors as error.
|
|
// You will need to assert the error if it's not nil i.e. err.(validator.ValidationErrors) to access the map of errors.
|
|
func (v *Validate) Struct(current interface{}) error {
|
|
v.initCheck()
|
|
|
|
errs := v.errsPool.Get().(ValidationErrors)
|
|
sv := reflect.ValueOf(current)
|
|
|
|
v.tranverseStruct(sv, sv, sv, blank, blank, errs, true, false, false, nil, false)
|
|
|
|
if len(errs) == 0 {
|
|
v.errsPool.Put(errs)
|
|
return nil
|
|
}
|
|
|
|
return errs
|
|
}
|
|
|
|
// tranverseStruct traverses a structs fields and then passes them to be validated by traverseField
|
|
func (v *Validate) tranverseStruct(topStruct reflect.Value, currentStruct reflect.Value, current reflect.Value, errPrefix string, nsPrefix string, errs ValidationErrors, useStructName bool, partial bool, exclude bool, includeExclude map[string]*struct{}, isStructOnly bool) {
|
|
|
|
if current.Kind() == reflect.Ptr && !current.IsNil() {
|
|
current = current.Elem()
|
|
}
|
|
|
|
if current.Kind() != reflect.Struct && current.Kind() != reflect.Interface {
|
|
panic("value passed for validation is not a struct")
|
|
}
|
|
|
|
// var ok bool
|
|
typ := current.Type()
|
|
|
|
sName := typ.Name()
|
|
|
|
if useStructName {
|
|
errPrefix += sName + namespaceSeparator
|
|
|
|
if v.fieldNameTag != blank {
|
|
nsPrefix += sName + namespaceSeparator
|
|
}
|
|
}
|
|
|
|
// structonly tag present don't tranverseFields
|
|
// but must still check and run below struct level validation
|
|
// if present
|
|
if !isStructOnly {
|
|
|
|
var fld reflect.StructField
|
|
|
|
// is anonymous struct, cannot parse or cache as
|
|
// it has no name to index by
|
|
if sName == blank {
|
|
|
|
var customName string
|
|
var ok bool
|
|
numFields := current.NumField()
|
|
|
|
for i := 0; i < numFields; i++ {
|
|
|
|
fld = typ.Field(i)
|
|
|
|
if fld.PkgPath != blank && !fld.Anonymous {
|
|
continue
|
|
}
|
|
|
|
if partial {
|
|
|
|
_, ok = includeExclude[errPrefix+fld.Name]
|
|
|
|
if (ok && exclude) || (!ok && !exclude) {
|
|
continue
|
|
}
|
|
}
|
|
|
|
customName = fld.Name
|
|
|
|
if v.fieldNameTag != blank {
|
|
|
|
name := strings.SplitN(fld.Tag.Get(v.fieldNameTag), ",", 2)[0]
|
|
|
|
// dash check is for json "-" means don't output in json
|
|
if name != blank && name != dash {
|
|
customName = name
|
|
}
|
|
}
|
|
|
|
v.traverseField(topStruct, currentStruct, current.Field(i), errPrefix, nsPrefix, errs, true, fld.Tag.Get(v.tagName), fld.Name, customName, partial, exclude, includeExclude, nil)
|
|
}
|
|
} else {
|
|
s, ok := v.structCache.Get(typ)
|
|
if !ok {
|
|
s = v.parseStruct(current, sName)
|
|
}
|
|
|
|
for i, f := range s.fields {
|
|
|
|
if partial {
|
|
|
|
_, ok = includeExclude[errPrefix+f.Name]
|
|
|
|
if (ok && exclude) || (!ok && !exclude) {
|
|
continue
|
|
}
|
|
}
|
|
fld = typ.Field(i)
|
|
|
|
v.traverseField(topStruct, currentStruct, current.Field(i), errPrefix, nsPrefix, errs, true, f.CachedTag.tag, fld.Name, f.AltName, partial, exclude, includeExclude, f.CachedTag)
|
|
}
|
|
}
|
|
}
|
|
|
|
// check if any struct level validations, after all field validations already checked.
|
|
if v.hasStructLevelFuncs {
|
|
if fn, ok := v.structLevelFuncs[current.Type()]; ok {
|
|
fn(v, &StructLevel{v: v, TopStruct: topStruct, CurrentStruct: current, errPrefix: errPrefix, nsPrefix: nsPrefix, errs: errs})
|
|
}
|
|
}
|
|
}
|
|
|
|
// traverseField validates any field, be it a struct or single field, ensures it's validity and passes it along to be validated via it's tag options
|
|
func (v *Validate) traverseField(topStruct reflect.Value, currentStruct reflect.Value, current reflect.Value, errPrefix string, nsPrefix string, errs ValidationErrors, isStructField bool, tag, name, customName string, partial bool, exclude bool, includeExclude map[string]*struct{}, cTag *cachedTag) {
|
|
|
|
if tag == skipValidationTag {
|
|
return
|
|
}
|
|
|
|
if cTag == nil {
|
|
var isCached bool
|
|
cTag, isCached = v.tagCache.Get(tag)
|
|
|
|
if !isCached {
|
|
cTag = v.parseTags(tag, name)
|
|
}
|
|
}
|
|
|
|
current, kind := v.ExtractType(current)
|
|
var typ reflect.Type
|
|
|
|
switch kind {
|
|
case reflect.Ptr, reflect.Interface, reflect.Invalid:
|
|
if cTag.isOmitEmpty {
|
|
return
|
|
}
|
|
|
|
if tag != blank {
|
|
|
|
ns := errPrefix + name
|
|
|
|
if kind == reflect.Invalid {
|
|
errs[ns] = &FieldError{
|
|
FieldNamespace: ns,
|
|
NameNamespace: nsPrefix + customName,
|
|
Name: customName,
|
|
Field: name,
|
|
Tag: cTag.tags[0].tag,
|
|
ActualTag: cTag.tags[0].tagVals[0][0],
|
|
Param: cTag.tags[0].tagVals[0][1],
|
|
Kind: kind,
|
|
}
|
|
return
|
|
}
|
|
|
|
errs[ns] = &FieldError{
|
|
FieldNamespace: ns,
|
|
NameNamespace: nsPrefix + customName,
|
|
Name: customName,
|
|
Field: name,
|
|
Tag: cTag.tags[0].tag,
|
|
ActualTag: cTag.tags[0].tagVals[0][0],
|
|
Param: cTag.tags[0].tagVals[0][1],
|
|
Value: current.Interface(),
|
|
Kind: kind,
|
|
Type: current.Type(),
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// if we get here tag length is zero and we can leave
|
|
if kind == reflect.Invalid {
|
|
return
|
|
}
|
|
|
|
case reflect.Struct:
|
|
typ = current.Type()
|
|
|
|
if typ != timeType {
|
|
|
|
if cTag.isNoStructLevel {
|
|
return
|
|
}
|
|
|
|
v.tranverseStruct(topStruct, current, current, errPrefix+name+namespaceSeparator, nsPrefix+customName+namespaceSeparator, errs, false, partial, exclude, includeExclude, cTag.isStructOnly)
|
|
return
|
|
}
|
|
}
|
|
|
|
if tag == blank {
|
|
return
|
|
}
|
|
|
|
typ = current.Type()
|
|
|
|
var dive bool
|
|
var diveSubTag string
|
|
|
|
for _, valTag := range cTag.tags {
|
|
|
|
if valTag.tagVals[0][0] == existsTag {
|
|
continue
|
|
}
|
|
|
|
if valTag.tagVals[0][0] == diveTag {
|
|
dive = true
|
|
diveSubTag = strings.TrimLeft(strings.SplitN(cTag.diveTag, diveTag, 2)[1], ",")
|
|
break
|
|
}
|
|
|
|
if valTag.tagVals[0][0] == omitempty {
|
|
|
|
if !HasValue(v, topStruct, currentStruct, current, typ, kind, blank) {
|
|
return
|
|
}
|
|
continue
|
|
}
|
|
|
|
if v.validateField(topStruct, currentStruct, current, typ, kind, errPrefix, nsPrefix, errs, valTag, name, customName) {
|
|
return
|
|
}
|
|
}
|
|
|
|
if dive {
|
|
// traverse slice or map here
|
|
// or panic ;)
|
|
switch kind {
|
|
case reflect.Slice, reflect.Array:
|
|
v.traverseSlice(topStruct, currentStruct, current, errPrefix, nsPrefix, errs, diveSubTag, name, customName, partial, exclude, includeExclude, nil)
|
|
case reflect.Map:
|
|
v.traverseMap(topStruct, currentStruct, current, errPrefix, nsPrefix, errs, diveSubTag, name, customName, partial, exclude, includeExclude, nil)
|
|
default:
|
|
// throw error, if not a slice or map then should not have gotten here
|
|
// bad dive tag
|
|
panic("dive error! can't dive on a non slice or map")
|
|
}
|
|
}
|
|
}
|
|
|
|
// traverseSlice traverses a Slice or Array's elements and passes them to traverseField for validation
|
|
func (v *Validate) traverseSlice(topStruct reflect.Value, currentStruct reflect.Value, current reflect.Value, errPrefix string, nsPrefix string, errs ValidationErrors, tag, name, customName string, partial bool, exclude bool, includeExclude map[string]*struct{}, cTag *cachedTag) {
|
|
|
|
for i := 0; i < current.Len(); i++ {
|
|
v.traverseField(topStruct, currentStruct, current.Index(i), errPrefix, nsPrefix, errs, false, tag, fmt.Sprintf(arrayIndexFieldName, name, i), fmt.Sprintf(arrayIndexFieldName, customName, i), partial, exclude, includeExclude, cTag)
|
|
}
|
|
}
|
|
|
|
// traverseMap traverses a map's elements and passes them to traverseField for validation
|
|
func (v *Validate) traverseMap(topStruct reflect.Value, currentStruct reflect.Value, current reflect.Value, errPrefix string, nsPrefix string, errs ValidationErrors, tag, name, customName string, partial bool, exclude bool, includeExclude map[string]*struct{}, cTag *cachedTag) {
|
|
|
|
for _, key := range current.MapKeys() {
|
|
v.traverseField(topStruct, currentStruct, current.MapIndex(key), errPrefix, nsPrefix, errs, false, tag, fmt.Sprintf(mapIndexFieldName, name, key.Interface()), fmt.Sprintf(mapIndexFieldName, customName, key.Interface()), partial, exclude, includeExclude, cTag)
|
|
}
|
|
}
|
|
|
|
// validateField validates a field based on the provided tag's key and param values and returns true if there is an error or false if all ok
|
|
func (v *Validate) validateField(topStruct reflect.Value, currentStruct reflect.Value, current reflect.Value, currentType reflect.Type, currentKind reflect.Kind, errPrefix string, nsPrefix string, errs ValidationErrors, valTag *tagVals, name, customName string) bool {
|
|
|
|
var valFunc Func
|
|
var ok bool
|
|
|
|
if valTag.isOrVal {
|
|
|
|
errTag := blank
|
|
|
|
for _, val := range valTag.tagVals {
|
|
|
|
valFunc, ok = v.validationFuncs[val[0]]
|
|
if !ok {
|
|
panic(strings.TrimSpace(fmt.Sprintf(undefinedValidation, name)))
|
|
}
|
|
|
|
if valFunc(v, topStruct, currentStruct, current, currentType, currentKind, val[1]) {
|
|
return false
|
|
}
|
|
|
|
errTag += orSeparator + val[0]
|
|
}
|
|
|
|
ns := errPrefix + name
|
|
|
|
if valTag.isAlias {
|
|
errs[ns] = &FieldError{
|
|
FieldNamespace: ns,
|
|
NameNamespace: nsPrefix + customName,
|
|
Name: customName,
|
|
Field: name,
|
|
Tag: valTag.tag,
|
|
ActualTag: errTag[1:],
|
|
Value: current.Interface(),
|
|
Type: currentType,
|
|
Kind: currentKind,
|
|
}
|
|
} else {
|
|
errs[errPrefix+name] = &FieldError{
|
|
FieldNamespace: ns,
|
|
NameNamespace: nsPrefix + customName,
|
|
Name: customName,
|
|
Field: name,
|
|
Tag: errTag[1:],
|
|
ActualTag: errTag[1:],
|
|
Value: current.Interface(),
|
|
Type: currentType,
|
|
Kind: currentKind,
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
valFunc, ok = v.validationFuncs[valTag.tagVals[0][0]]
|
|
if !ok {
|
|
panic(strings.TrimSpace(fmt.Sprintf(undefinedValidation, name)))
|
|
}
|
|
|
|
if valFunc(v, topStruct, currentStruct, current, currentType, currentKind, valTag.tagVals[0][1]) {
|
|
return false
|
|
}
|
|
|
|
ns := errPrefix + name
|
|
|
|
errs[ns] = &FieldError{
|
|
FieldNamespace: ns,
|
|
NameNamespace: nsPrefix + customName,
|
|
Name: customName,
|
|
Field: name,
|
|
Tag: valTag.tag,
|
|
ActualTag: valTag.tagVals[0][0],
|
|
Value: current.Interface(),
|
|
Param: valTag.tagVals[0][1],
|
|
Type: currentType,
|
|
Kind: currentKind,
|
|
}
|
|
|
|
return true
|
|
}
|