Merge branch 'v9' of https://github.com/go-playground/validator into v9

Makefile

@@ -0,0 +1,16 @@
+GOCMD=go
+
+linters-install:
+	$(GOCMD) get -u github.com/alecthomas/gometalinter
+	gometalinter --install
+
+lint: linters-install
+	gometalinter --vendor --disable-all --enable=vet --enable=vetshadow --enable=golint --enable=maligned --enable=megacheck --enable=ineffassign --enable=misspell --enable=errcheck --enable=goconst ./...
+
+test:
+	$(GOCMD) test -cover -race ./...
+
+bench:
+	$(GOCMD) test -bench=. -benchmem ./...
+
+.PHONY: test lint linters-install

README.md

@@ -1,7 +1,7 @@
 Package validator
 ================
 <img align="right" src="https://raw.githubusercontent.com/go-playground/validator/v9/logo.png">[![Join the chat at https://gitter.im/go-playground/validator](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/go-playground/validator?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-![Project status](https://img.shields.io/badge/version-9.13.0-green.svg)
+![Project status](https://img.shields.io/badge/version-9.19.0-green.svg)
 [![Build Status](https://semaphoreci.com/api/v1/joeybloggs/validator/branches/v9/badge.svg)](https://semaphoreci.com/joeybloggs/validator)
 [![Coverage Status](https://coveralls.io/repos/go-playground/validator/badge.svg?branch=v9&service=github)](https://coveralls.io/github/go-playground/validator?branch=v9)
 [![Go Report Card](https://goreportcard.com/badge/github.com/go-playground/validator)](https://goreportcard.com/report/github.com/go-playground/validator)
@@ -66,71 +66,73 @@ Please see http://godoc.org/gopkg.in/go-playground/validator.v9 for detailed usa
 
 Benchmarks
 ------
-###### Run on MacBook Pro (15-inch, 2017) Go version go1.9.4 darwin/amd64
+###### Run on MacBook Pro (15-inch, 2017) go version go1.10.2 darwin/amd64
 ```go
 goos: darwin
 goarch: amd64
 pkg: github.com/go-playground/validator
-BenchmarkFieldSuccess-8                                       	20000000	        86.4 ns/op	       0 B/op	       0 allocs/op
-BenchmarkFieldSuccessParallel-8                               	50000000	        27.6 ns/op	       0 B/op	       0 allocs/op
-BenchmarkFieldFailure-8                                       	 5000000	       297 ns/op	     208 B/op	       4 allocs/op
-BenchmarkFieldFailureParallel-8                               	20000000	       107 ns/op	     208 B/op	       4 allocs/op
-BenchmarkFieldArrayDiveSuccess-8                              	 2000000	       618 ns/op	     201 B/op	      11 allocs/op
-BenchmarkFieldArrayDiveSuccessParallel-8                      	10000000	       225 ns/op	     201 B/op	      11 allocs/op
-BenchmarkFieldArrayDiveFailure-8                              	 2000000	       863 ns/op	     412 B/op	      16 allocs/op
-BenchmarkFieldArrayDiveFailureParallel-8                      	 5000000	       322 ns/op	     413 B/op	      16 allocs/op
-BenchmarkFieldMapDiveSuccess-8                                	 1000000	      1336 ns/op	     432 B/op	      18 allocs/op
-BenchmarkFieldMapDiveSuccessParallel-8                        	 3000000	       474 ns/op	     432 B/op	      18 allocs/op
-BenchmarkFieldMapDiveFailure-8                                	 1000000	      1103 ns/op	     512 B/op	      16 allocs/op
-BenchmarkFieldMapDiveFailureParallel-8                        	 5000000	       412 ns/op	     512 B/op	      16 allocs/op
-BenchmarkFieldMapDiveWithKeysSuccess-8                        	 1000000	      1572 ns/op	     480 B/op	      21 allocs/op
-BenchmarkFieldMapDiveWithKeysSuccessParallel-8                	 3000000	       615 ns/op	     480 B/op	      21 allocs/op
-BenchmarkFieldMapDiveWithKeysFailure-8                        	 1000000	      1438 ns/op	     721 B/op	      21 allocs/op
-BenchmarkFieldMapDiveWithKeysFailureParallel-8                	 3000000	       543 ns/op	     721 B/op	      21 allocs/op
-BenchmarkFieldCustomTypeSuccess-8                             	10000000	       230 ns/op	      32 B/op	       2 allocs/op
-BenchmarkFieldCustomTypeSuccessParallel-8                     	20000000	        82.5 ns/op	      32 B/op	       2 allocs/op
-BenchmarkFieldCustomTypeFailure-8                             	 5000000	       284 ns/op	     208 B/op	       4 allocs/op
-BenchmarkFieldCustomTypeFailureParallel-8                     	20000000	       118 ns/op	     208 B/op	       4 allocs/op
-BenchmarkFieldOrTagSuccess-8                                  	 2000000	       824 ns/op	      16 B/op	       1 allocs/op
-BenchmarkFieldOrTagSuccessParallel-8                          	 3000000	       472 ns/op	      16 B/op	       1 allocs/op
-BenchmarkFieldOrTagFailure-8                                  	 3000000	       487 ns/op	     224 B/op	       5 allocs/op
-BenchmarkFieldOrTagFailureParallel-8                          	 5000000	       405 ns/op	     224 B/op	       5 allocs/op
-BenchmarkStructLevelValidationSuccess-8                       	10000000	       214 ns/op	      32 B/op	       2 allocs/op
-BenchmarkStructLevelValidationSuccessParallel-8               	20000000	        78.0 ns/op	      32 B/op	       2 allocs/op
-BenchmarkStructLevelValidationFailure-8                       	 3000000	       475 ns/op	     304 B/op	       8 allocs/op
-BenchmarkStructLevelValidationFailureParallel-8               	10000000	       200 ns/op	     304 B/op	       8 allocs/op
-BenchmarkStructSimpleCustomTypeSuccess-8                      	 3000000	       403 ns/op	      32 B/op	       2 allocs/op
-BenchmarkStructSimpleCustomTypeSuccessParallel-8              	10000000	       143 ns/op	      32 B/op	       2 allocs/op
-BenchmarkStructSimpleCustomTypeFailure-8                      	 2000000	       655 ns/op	     424 B/op	       9 allocs/op
-BenchmarkStructSimpleCustomTypeFailureParallel-8              	 5000000	       286 ns/op	     440 B/op	      10 allocs/op
-BenchmarkStructFilteredSuccess-8                              	 2000000	       598 ns/op	     288 B/op	       9 allocs/op
-BenchmarkStructFilteredSuccessParallel-8                      	10000000	       231 ns/op	     288 B/op	       9 allocs/op
-BenchmarkStructFilteredFailure-8                              	 3000000	       455 ns/op	     256 B/op	       7 allocs/op
-BenchmarkStructFilteredFailureParallel-8                      	10000000	       197 ns/op	     256 B/op	       7 allocs/op
-BenchmarkStructPartialSuccess-8                               	 3000000	       552 ns/op	     256 B/op	       6 allocs/op
-BenchmarkStructPartialSuccessParallel-8                       	10000000	       206 ns/op	     256 B/op	       6 allocs/op
-BenchmarkStructPartialFailure-8                               	 2000000	       750 ns/op	     480 B/op	      11 allocs/op
-BenchmarkStructPartialFailureParallel-8                       	 5000000	       317 ns/op	     480 B/op	      11 allocs/op
-BenchmarkStructExceptSuccess-8                                	 2000000	       853 ns/op	     496 B/op	      12 allocs/op
-BenchmarkStructExceptSuccessParallel-8                        	10000000	       179 ns/op	     240 B/op	       5 allocs/op
-BenchmarkStructExceptFailure-8                                	 2000000	       698 ns/op	     464 B/op	      10 allocs/op
-BenchmarkStructExceptFailureParallel-8                        	 5000000	       276 ns/op	     464 B/op	      10 allocs/op
-BenchmarkStructSimpleCrossFieldSuccess-8                      	 3000000	       412 ns/op	      72 B/op	       3 allocs/op
-BenchmarkStructSimpleCrossFieldSuccessParallel-8              	10000000	       148 ns/op	      72 B/op	       3 allocs/op
-BenchmarkStructSimpleCrossFieldFailure-8                      	 2000000	       630 ns/op	     304 B/op	       8 allocs/op
-BenchmarkStructSimpleCrossFieldFailureParallel-8              	10000000	       244 ns/op	     304 B/op	       8 allocs/op
-BenchmarkStructSimpleCrossStructCrossFieldSuccess-8           	 2000000	       610 ns/op	      80 B/op	       4 allocs/op
-BenchmarkStructSimpleCrossStructCrossFieldSuccessParallel-8   	10000000	       205 ns/op	      80 B/op	       4 allocs/op
-BenchmarkStructSimpleCrossStructCrossFieldFailure-8           	 2000000	       861 ns/op	     320 B/op	       9 allocs/op
-BenchmarkStructSimpleCrossStructCrossFieldFailureParallel-8   	 5000000	       315 ns/op	     320 B/op	       9 allocs/op
-BenchmarkStructSimpleSuccess-8                                	 5000000	       279 ns/op	       0 B/op	       0 allocs/op
-BenchmarkStructSimpleSuccessParallel-8                        	20000000	        86.4 ns/op	       0 B/op	       0 allocs/op
-BenchmarkStructSimpleFailure-8                                	 2000000	       636 ns/op	     424 B/op	       9 allocs/op
-BenchmarkStructSimpleFailureParallel-8                        	10000000	       264 ns/op	     424 B/op	       9 allocs/op
-BenchmarkStructComplexSuccess-8                               	 1000000	      1539 ns/op	     128 B/op	       8 allocs/op
-BenchmarkStructComplexSuccessParallel-8                       	 3000000	       557 ns/op	     128 B/op	       8 allocs/op
-BenchmarkStructComplexFailure-8                               	  300000	      4136 ns/op	    3041 B/op	      53 allocs/op
-BenchmarkStructComplexFailureParallel-8                       	 1000000	      1855 ns/op	    3041 B/op	      53 allocs/op
+BenchmarkFieldSuccess-8                                         20000000                83.6 ns/op             0 B/op          0 allocs/op
+BenchmarkFieldSuccessParallel-8                                 50000000                26.8 ns/op             0 B/op          0 allocs/op
+BenchmarkFieldFailure-8                                          5000000               291 ns/op             208 B/op          4 allocs/op
+BenchmarkFieldFailureParallel-8                                 20000000               107 ns/op             208 B/op          4 allocs/op
+BenchmarkFieldArrayDiveSuccess-8                                 2000000               623 ns/op             201 B/op         11 allocs/op
+BenchmarkFieldArrayDiveSuccessParallel-8                        10000000               237 ns/op             201 B/op         11 allocs/op
+BenchmarkFieldArrayDiveFailure-8                                 2000000               859 ns/op             412 B/op         16 allocs/op
+BenchmarkFieldArrayDiveFailureParallel-8                         5000000               335 ns/op             413 B/op         16 allocs/op
+BenchmarkFieldMapDiveSuccess-8                                   1000000              1292 ns/op             432 B/op         18 allocs/op
+BenchmarkFieldMapDiveSuccessParallel-8                           3000000               467 ns/op             432 B/op         18 allocs/op
+BenchmarkFieldMapDiveFailure-8                                   1000000              1082 ns/op             512 B/op         16 allocs/op
+BenchmarkFieldMapDiveFailureParallel-8                           5000000               425 ns/op             512 B/op         16 allocs/op
+BenchmarkFieldMapDiveWithKeysSuccess-8                           1000000              1539 ns/op             480 B/op         21 allocs/op
+BenchmarkFieldMapDiveWithKeysSuccessParallel-8                   3000000               613 ns/op             480 B/op         21 allocs/op
+BenchmarkFieldMapDiveWithKeysFailure-8                           1000000              1413 ns/op             721 B/op         21 allocs/op
+BenchmarkFieldMapDiveWithKeysFailureParallel-8                   3000000               575 ns/op             721 B/op         21 allocs/op
+BenchmarkFieldCustomTypeSuccess-8                               10000000               216 ns/op              32 B/op          2 allocs/op
+BenchmarkFieldCustomTypeSuccessParallel-8                       20000000                82.2 ns/op            32 B/op          2 allocs/op
+BenchmarkFieldCustomTypeFailure-8                                5000000               274 ns/op             208 B/op          4 allocs/op
+BenchmarkFieldCustomTypeFailureParallel-8                       20000000               116 ns/op             208 B/op          4 allocs/op
+BenchmarkFieldOrTagSuccess-8                                     2000000               740 ns/op              16 B/op          1 allocs/op
+BenchmarkFieldOrTagSuccessParallel-8                             3000000               474 ns/op              16 B/op          1 allocs/op
+BenchmarkFieldOrTagFailure-8                                     3000000               471 ns/op             224 B/op          5 allocs/op
+BenchmarkFieldOrTagFailureParallel-8                             3000000               414 ns/op             224 B/op          5 allocs/op
+BenchmarkStructLevelValidationSuccess-8                         10000000               213 ns/op              32 B/op          2 allocs/op
+BenchmarkStructLevelValidationSuccessParallel-8                 20000000                91.8 ns/op            32 B/op          2 allocs/op
+BenchmarkStructLevelValidationFailure-8                          3000000               473 ns/op             304 B/op          8 allocs/op
+BenchmarkStructLevelValidationFailureParallel-8                 10000000               234 ns/op             304 B/op          8 allocs/op
+BenchmarkStructSimpleCustomTypeSuccess-8                         5000000               385 ns/op              32 B/op          2 allocs/op
+BenchmarkStructSimpleCustomTypeSuccessParallel-8                10000000               161 ns/op              32 B/op          2 allocs/op
+BenchmarkStructSimpleCustomTypeFailure-8                         2000000               640 ns/op             424 B/op          9 allocs/op
+BenchmarkStructSimpleCustomTypeFailureParallel-8                 5000000               318 ns/op             440 B/op         10 allocs/op
+BenchmarkStructFilteredSuccess-8                                 2000000               597 ns/op             288 B/op          9 allocs/op
+BenchmarkStructFilteredSuccessParallel-8                        10000000               266 ns/op             288 B/op          9 allocs/op
+BenchmarkStructFilteredFailure-8                                 3000000               454 ns/op             256 B/op          7 allocs/op
+BenchmarkStructFilteredFailureParallel-8                        10000000               214 ns/op             256 B/op          7 allocs/op
+BenchmarkStructPartialSuccess-8                                  3000000               502 ns/op             256 B/op          6 allocs/op
+BenchmarkStructPartialSuccessParallel-8                         10000000               225 ns/op             256 B/op          6 allocs/op
+BenchmarkStructPartialFailure-8                                  2000000               702 ns/op             480 B/op         11 allocs/op
+BenchmarkStructPartialFailureParallel-8                          5000000               329 ns/op             480 B/op         11 allocs/op
+BenchmarkStructExceptSuccess-8                                   2000000               793 ns/op             496 B/op         12 allocs/op
+BenchmarkStructExceptSuccessParallel-8                          10000000               193 ns/op             240 B/op          5 allocs/op
+BenchmarkStructExceptFailure-8                                   2000000               639 ns/op             464 B/op         10 allocs/op
+BenchmarkStructExceptFailureParallel-8                           5000000               300 ns/op             464 B/op         10 allocs/op
+BenchmarkStructSimpleCrossFieldSuccess-8                         3000000               417 ns/op              72 B/op          3 allocs/op
+BenchmarkStructSimpleCrossFieldSuccessParallel-8                10000000               163 ns/op              72 B/op          3 allocs/op
+BenchmarkStructSimpleCrossFieldFailure-8                         2000000               645 ns/op             304 B/op          8 allocs/op
+BenchmarkStructSimpleCrossFieldFailureParallel-8                 5000000               285 ns/op             304 B/op          8 allocs/op
+BenchmarkStructSimpleCrossStructCrossFieldSuccess-8              3000000               588 ns/op              80 B/op          4 allocs/op
+BenchmarkStructSimpleCrossStructCrossFieldSuccessParallel-8     10000000               221 ns/op              80 B/op          4 allocs/op
+BenchmarkStructSimpleCrossStructCrossFieldFailure-8              2000000               868 ns/op             320 B/op          9 allocs/op
+BenchmarkStructSimpleCrossStructCrossFieldFailureParallel-8      5000000               337 ns/op             320 B/op          9 allocs/op
+BenchmarkStructSimpleSuccess-8                                   5000000               260 ns/op               0 B/op          0 allocs/op
+BenchmarkStructSimpleSuccessParallel-8                          20000000                90.6 ns/op             0 B/op          0 allocs/op
+BenchmarkStructSimpleFailure-8                                   2000000               619 ns/op             424 B/op          9 allocs/op
+BenchmarkStructSimpleFailureParallel-8                           5000000               296 ns/op             424 B/op          9 allocs/op
+BenchmarkStructComplexSuccess-8                                  1000000              1454 ns/op             128 B/op          8 allocs/op
+BenchmarkStructComplexSuccessParallel-8                          3000000               579 ns/op             128 B/op          8 allocs/op
+BenchmarkStructComplexFailure-8                                   300000              4140 ns/op            3041 B/op         53 allocs/op
+BenchmarkStructComplexFailureParallel-8                          1000000              2127 ns/op            3041 B/op         53 allocs/op
+BenchmarkOneof-8                                                10000000               140 ns/op               0 B/op          0 allocs/op
+BenchmarkOneofParallel-8                                        20000000                70.1 ns/op             0 B/op          0 allocs/op
 ```
 
 Complementary Software

_examples/gin-upgrading-overriding/v8_to_v9.go

@@ -29,6 +29,11 @@ func (v *defaultValidator) ValidateStruct(obj interface{}) error {
 	return nil
 }
 
+func (v *defaultValidator) Engine() interface{} {
+	v.lazyinit()
+	return v.validate
+}
+
 func (v *defaultValidator) lazyinit() {
 	v.once.Do(func() {
 		v.validate = validator.New()

_examples/simple/main.go

@@ -52,7 +52,7 @@ func validateStruct() {
 		Addresses:      []*Address{address},
 	}
 
-	// returns nil or ValidationErrors ( map[string]*FieldError )
+	// returns nil or ValidationErrors ( []FieldError )
 	err := validate.Struct(user)
 	if err != nil {
 

baked_in.go

@@ -1,10 +1,13 @@
 package validator
 
 import (
+	"bytes"
 	"context"
+	"crypto/sha256"
 	"fmt"
 	"net"
 	"net/url"
+	"os"
 	"reflect"
 	"strconv"
 	"strings"
@@ -95,7 +98,9 @@ var (
 		"email":            isEmail,
 		"url":              isURL,
 		"uri":              isURI,
+		"file":             isFile,
 		"base64":           isBase64,
+		"base64url":        isBase64URL,
 		"contains":         contains,
 		"containsany":      containsAny,
 		"containsrune":     containsRune,
@@ -105,6 +110,9 @@ var (
 		"isbn":             isISBN,
 		"isbn10":           isISBN10,
 		"isbn13":           isISBN13,
+		"eth_addr":         isEthereumAddress,
+		"btc_addr":         isBitcoinAddress,
+		"btc_addr_bech32":  isBitcoinBech32Address,
 		"uuid":             isUUID,
 		"uuid3":            isUUID3,
 		"uuid4":            isUUID4,
@@ -138,6 +146,9 @@ var (
 		"fqdn":             isFQDN,
 		"unique":           isUnique,
 		"oneof":            isOneOf,
+		"html":             isHTML,
+		"html_encoded":     isHTMLEncoded,
+		"url_encoded":      isURLEncoded,
 	}
 )
 
@@ -157,6 +168,18 @@ func parseOneOfParam2(s string) []string {
 	return vals
 }
 
+func isURLEncoded(fl FieldLevel) bool {
+	return uRLEncodedRegex.MatchString(fl.Field().String())
+}
+
+func isHTMLEncoded(fl FieldLevel) bool {
+	return hTMLEncodedRegex.MatchString(fl.Field().String())
+}
+
+func isHTML(fl FieldLevel) bool {
+	return hTMLRegex.MatchString(fl.Field().String())
+}
+
 func isOneOf(fl FieldLevel) bool {
 	vals := parseOneOfParam2(fl.Param())
 
@@ -181,7 +204,7 @@ func isOneOf(fl FieldLevel) bool {
 	return false
 }
 
-// isUnique is the validation function for validating if each array|slice element is unique
+// isUnique is the validation function for validating if each array|slice|map value is unique
 func isUnique(fl FieldLevel) bool {
 
 	field := fl.Field()
@@ -189,12 +212,19 @@ func isUnique(fl FieldLevel) bool {
 
 	switch field.Kind() {
 	case reflect.Slice, reflect.Array:
-		m := reflect.MakeMap(reflect.MapOf(fl.Field().Type().Elem(), v.Type()))
+		m := reflect.MakeMap(reflect.MapOf(field.Type().Elem(), v.Type()))
 
 		for i := 0; i < field.Len(); i++ {
 			m.SetMapIndex(field.Index(i), v)
 		}
 		return field.Len() == m.Len()
+	case reflect.Map:
+		m := reflect.MakeMap(reflect.MapOf(field.Type().Elem(), v.Type()))
+
+		for _, k := range field.MapKeys() {
+			m.SetMapIndex(field.MapIndex(k), v)
+		}
+		return field.Len() == m.Len()
 	default:
 		panic(fmt.Sprintf("Bad field type %T", field.Interface()))
 	}
@@ -387,6 +417,140 @@ func isISBN10(fl FieldLevel) bool {
 	return checksum%11 == 0
 }
 
+// IsEthereumAddress is the validation function for validating if the field's value is a valid ethereum address based currently only on the format
+func isEthereumAddress(fl FieldLevel) bool {
+	address := fl.Field().String()
+
+	if !ethAddressRegex.MatchString(address) {
+		return false
+	}
+
+	if ethaddressRegexUpper.MatchString(address) || ethAddressRegexLower.MatchString(address) {
+		return true
+	}
+
+	// checksum validation is blocked by https://github.com/golang/crypto/pull/28
+
+	return true
+}
+
+// IsBitcoinAddress is the validation function for validating if the field's value is a valid btc address
+func isBitcoinAddress(fl FieldLevel) bool {
+	address := fl.Field().String()
+
+	if !btcAddressRegex.MatchString(address) {
+		return false
+	}
+
+	alphabet := []byte("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz")
+
+	decode := [25]byte{}
+
+	for _, n := range []byte(address) {
+		d := bytes.IndexByte(alphabet, n)
+
+		for i := 24; i >= 0; i-- {
+			d += 58 * int(decode[i])
+			decode[i] = byte(d % 256)
+			d /= 256
+		}
+	}
+
+	h := sha256.New()
+	_, _ = h.Write(decode[:21])
+	d := h.Sum([]byte{})
+	h = sha256.New()
+	_, _ = h.Write(d)
+
+	validchecksum := [4]byte{}
+	computedchecksum := [4]byte{}
+
+	copy(computedchecksum[:], h.Sum(d[:0]))
+	copy(validchecksum[:], decode[21:])
+
+	return validchecksum == computedchecksum
+}
+
+// IsBitcoinBech32Address is the validation function for validating if the field's value is a valid bech32 btc address
+func isBitcoinBech32Address(fl FieldLevel) bool {
+	address := fl.Field().String()
+
+	if !btcLowerAddressRegexBech32.MatchString(address) && !btcUpperAddressRegexBech32.MatchString(address) {
+		return false
+	}
+
+	am := len(address) % 8
+
+	if am == 0 || am == 3 || am == 5 {
+		return false
+	}
+
+	address = strings.ToLower(address)
+
+	alphabet := "qpzry9x8gf2tvdw0s3jn54khce6mua7l"
+
+	hr := []int{3, 3, 0, 2, 3} // the human readable part will always be bc
+	addr := address[3:]
+	dp := make([]int, 0, len(addr))
+
+	for _, c := range addr {
+		dp = append(dp, strings.IndexRune(alphabet, c))
+	}
+
+	ver := dp[0]
+
+	if ver < 0 || ver > 16 {
+		return false
+	}
+
+	if ver == 0 {
+		if len(address) != 42 && len(address) != 62 {
+			return false
+		}
+	}
+
+	values := append(hr, dp...)
+
+	GEN := []int{0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3}
+
+	p := 1
+
+	for _, v := range values {
+		b := p >> 25
+		p = (p&0x1ffffff)<<5 ^ v
+
+		for i := 0; i < 5; i++ {
+			if (b>>uint(i))&1 == 1 {
+				p ^= GEN[i]
+			}
+		}
+	}
+
+	if p != 1 {
+		return false
+	}
+
+	b := uint(0)
+	acc := 0
+	mv := (1 << 5) - 1
+	var sw []int
+
+	for _, v := range dp[1 : len(dp)-6] {
+		acc = (acc << 5) | v
+		b += 5
+		for b >= 8 {
+			b -= 8
+			sw = append(sw, (acc>>b)&mv)
+		}
+	}
+
+	if len(sw) < 2 || len(sw) > 40 {
+		return false
+	}
+
+	return true
+}
+
 // ExcludesRune is the validation function for validating that the field's value does not contain the rune specified within the param.
 func excludesRune(fl FieldLevel) bool {
 	return !containsRune(fl)
@@ -845,6 +1009,11 @@ func isBase64(fl FieldLevel) bool {
 	return base64Regex.MatchString(fl.Field().String())
 }
 
+// IsBase64URL is the validation function for validating if the current field's value is a valid base64 URL safe string.
+func isBase64URL(fl FieldLevel) bool {
+	return base64URLRegex.MatchString(fl.Field().String())
+}
+
 // IsURI is the validation function for validating if the current field's value is a valid URI.
 func isURI(fl FieldLevel) bool {
 
@@ -908,6 +1077,23 @@ func isURL(fl FieldLevel) bool {
 	panic(fmt.Sprintf("Bad field type %T", field.Interface()))
 }
 
+// IsFile is the validation function for validating if the current field's value is a valid file path.
+func isFile(fl FieldLevel) bool {
+	field := fl.Field()
+
+	switch field.Kind() {
+	case reflect.String:
+		fileInfo, err := os.Stat(field.String())
+		if err != nil {
+			return false
+		}
+
+		return !fileInfo.IsDir()
+	}
+
+	panic(fmt.Sprintf("Bad field type %T", field.Interface()))
+}
+
 // IsEmail is the validation function for validating if the current field's value is a valid email address.
 func isEmail(fl FieldLevel) bool {
 	return emailRegex.MatchString(fl.Field().String())
@@ -945,12 +1131,22 @@ func isHexadecimal(fl FieldLevel) bool {
 
 // IsNumber is the validation function for validating if the current field's value is a valid number.
 func isNumber(fl FieldLevel) bool {
-	return numberRegex.MatchString(fl.Field().String())
+	switch fl.Field().Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr, reflect.Float32, reflect.Float64:
+		return true
+	default:
+		return numberRegex.MatchString(fl.Field().String())
+	}
 }
 
 // IsNumeric is the validation function for validating if the current field's value is a valid numeric value.
 func isNumeric(fl FieldLevel) bool {
-	return numericRegex.MatchString(fl.Field().String())
+	switch fl.Field().Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr, reflect.Float32, reflect.Float64:
+		return true
+	default:
+		return numericRegex.MatchString(fl.Field().String())
+	}
 }
 
 // IsAlphanum is the validation function for validating if the current field's value is a valid alphanumeric value.

cache.go

@@ -223,7 +223,7 @@ func (v *Validate) parseFieldTagsRecursive(tag string, fieldName string, alias s
 			current.typeof = typeKeys
 
 			if i == 0 || prevTag != typeDive {
-				panic(fmt.Sprintf("'%s' tag must be immediately preceeded by the '%s' tag", keysTag, diveTag))
+				panic(fmt.Sprintf("'%s' tag must be immediately preceded by the '%s' tag", keysTag, diveTag))
 			}
 
 			current.typeof = typeKeys

doc.go

@@ -168,7 +168,7 @@ StructOnly
 
 When a field that is a nested struct is encountered, and contains this flag
 any validation on the nested struct will be run, but none of the nested
-struct fields will be validated. This is usefull if inside of you program
+struct fields will be validated. This is useful if inside of you program
 you know the struct will be valid, but need to verify it has been assigned.
 NOTE: only "required" and "omitempty" can be used on a struct itself.
 
@@ -506,6 +506,7 @@ to the top level struct.
 Unique
 
 For arrays & slices, unique will ensure that there are no duplicates.
+For maps, unique will ensure that there are no duplicate values.
 
 	Usage: unique
 
@@ -537,6 +538,7 @@ Numeric
 
 This validates that a string value contains a basic numeric value.
 basic excludes exponents etc...
+for integers or float it returns true.
 
 	Usage: numeric
 
@@ -585,6 +587,14 @@ does any email provider accept all posibilities.
 
 	Usage: email
 
+File path
+
+This validates that a string value contains a valid file path and that 
+the file exists on the machine. 
+This is done using os.Stat, which is a platform independent function. 
+
+	Usage: file
+	
 URL String
 
 This validates that a string value contains a valid url
@@ -609,6 +619,40 @@ this with the omitempty tag.
 
 	Usage: base64
 
+Base64URL String
+
+This validates that a string value contains a valid base64 URL safe value
+according the the RFC4648 spec.
+Although an empty string is a valid base64 URL safe value, this will report
+an empty string as an error, if you wish to accept an empty string as valid
+you can use this with the omitempty tag.
+
+	Usage: base64url
+
+Bitcoin Address
+
+This validates that a string value contains a valid bitcoin address.
+The format of the string is checked to ensure it matches one of the three formats
+P2PKH, P2SH and performs checksum validation.
+
+	Usage: btc_addr
+
+Bitcoin Bech32 Address (segwit)
+
+This validates that a string value contains a valid bitcoin Bech32 address as defined
+by bip-0173 (https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki)
+Special thanks to Pieter Wuille for providng reference implementations.
+
+	Usage: btc_addr_bech32
+
+Ethereum Address
+
+This validates that a string value contains a valid ethereum address.
+The format of the string is checked to ensure it matches the standard Ethereum address format
+Full validation is blocked by https://github.com/golang/crypto/pull/28
+
+	Usage: eth_addr
+
 Contains
 
 This validates that a string value contains the substring value.
@@ -665,7 +709,6 @@ This validates that a string value contains a valid isbn13 value.
 
 	Usage: isbn13
 
-
 Universally Unique Identifier UUID
 
 This validates that a string value contains a valid UUID.
@@ -738,103 +781,103 @@ This validates that a string value contains a valid U.S. Social Security Number.
 
 Internet Protocol Address IP
 
-This validates that a string value contains a valid IP Adress.
+This validates that a string value contains a valid IP Address.
 
 	Usage: ip
 
 Internet Protocol Address IPv4
 
-This validates that a string value contains a valid v4 IP Adress.
+This validates that a string value contains a valid v4 IP Address.
 
 	Usage: ipv4
 
 Internet Protocol Address IPv6
 
-This validates that a string value contains a valid v6 IP Adress.
+This validates that a string value contains a valid v6 IP Address.
 
 	Usage: ipv6
 
 Classless Inter-Domain Routing CIDR
 
-This validates that a string value contains a valid CIDR Adress.
+This validates that a string value contains a valid CIDR Address.
 
 	Usage: cidr
 
 Classless Inter-Domain Routing CIDRv4
 
-This validates that a string value contains a valid v4 CIDR Adress.
+This validates that a string value contains a valid v4 CIDR Address.
 
 	Usage: cidrv4
 
 Classless Inter-Domain Routing CIDRv6
 
-This validates that a string value contains a valid v6 CIDR Adress.
+This validates that a string value contains a valid v6 CIDR Address.
 
 	Usage: cidrv6
 
 Transmission Control Protocol Address TCP
 
-This validates that a string value contains a valid resolvable TCP Adress.
+This validates that a string value contains a valid resolvable TCP Address.
 
 	Usage: tcp_addr
 
 Transmission Control Protocol Address TCPv4
 
-This validates that a string value contains a valid resolvable v4 TCP Adress.
+This validates that a string value contains a valid resolvable v4 TCP Address.
 
 	Usage: tcp4_addr
 
 Transmission Control Protocol Address TCPv6
 
-This validates that a string value contains a valid resolvable v6 TCP Adress.
+This validates that a string value contains a valid resolvable v6 TCP Address.
 
 	Usage: tcp6_addr
 
 User Datagram Protocol Address UDP
 
-This validates that a string value contains a valid resolvable UDP Adress.
+This validates that a string value contains a valid resolvable UDP Address.
 
 	Usage: udp_addr
 
 User Datagram Protocol Address UDPv4
 
-This validates that a string value contains a valid resolvable v4 UDP Adress.
+This validates that a string value contains a valid resolvable v4 UDP Address.
 
 	Usage: udp4_addr
 
 User Datagram Protocol Address UDPv6
 
-This validates that a string value contains a valid resolvable v6 UDP Adress.
+This validates that a string value contains a valid resolvable v6 UDP Address.
 
 	Usage: udp6_addr
 
 Internet Protocol Address IP
 
-This validates that a string value contains a valid resolvable IP Adress.
+This validates that a string value contains a valid resolvable IP Address.
 
 	Usage: ip_addr
 
 Internet Protocol Address IPv4
 
-This validates that a string value contains a valid resolvable v4 IP Adress.
+This validates that a string value contains a valid resolvable v4 IP Address.
 
 	Usage: ip4_addr
 
 Internet Protocol Address IPv6
 
-This validates that a string value contains a valid resolvable v6 IP Adress.
+This validates that a string value contains a valid resolvable v6 IP Address.
 
 	Usage: ip6_addr
 
 Unix domain socket end point Address
 
-This validates that a string value contains a valid Unix Adress.
+This validates that a string value contains a valid Unix Address.
 
 	Usage: unix_addr
 
 Media Access Control Address MAC
 
-This validates that a string value contains a valid MAC Adress.
+This validates that a string value contains a valid MAC Address.
 
 	Usage: mac
 
@@ -860,6 +903,27 @@ This validates that a string value contains a valid FQDN.
 
 	Usage: fqdn
 
+HTML Tags
+
+This validates that a string value appears to be an HTML element tag
+including those described at https://developer.mozilla.org/en-US/docs/Web/HTML/Element
+
+	Usage: html
+
+HTML Encoded
+
+This validates that a string value is a proper character reference in decimal
+or hexadecimal format
+
+	Usage: html_encoded
+
+URL Encoded
+
+This validates that a string value is percent-encoded (URL encoded) according
+to https://tools.ietf.org/html/rfc3986#section-2.1
+
+	Usage: url_encoded
+
 Alias Validators and Tags
 
 NOTE: When returning an error, the tag returned in "FieldError" will be
@@ -879,7 +943,7 @@ Validator notes:
 		of a regex which conflict with the validation definitions. Although
 		workarounds can be made, they take away from using pure regex's.
 		Furthermore it's quick and dirty but the regex's become harder to
-		maintain and are not reusable, so it's as much a programming philosiphy
+		maintain and are not reusable, so it's as much a programming philosophy
 		as anything.
 
 		In place of this new validator functions should be created; a regex can

field_level.go

@@ -17,7 +17,7 @@ type FieldLevel interface {
 	Field() reflect.Value
 
 	// returns the field's name with the tag
-	// name takeing precedence over the fields actual name.
+	// name taking precedence over the fields actual name.
 	FieldName() string
 
 	// returns the struct field's name

regexes.go

@@ -3,65 +3,85 @@ package validator
 import "regexp"
 
 const (
-	alphaRegexString               = "^[a-zA-Z]+$"
-	alphaNumericRegexString        = "^[a-zA-Z0-9]+$"
-	alphaUnicodeRegexString        = "^[\\p{L}]+$"
-	alphaUnicodeNumericRegexString = "^[\\p{L}\\p{N}]+$"
-	numericRegexString             = "^[-+]?[0-9]+(?:\\.[0-9]+)?$"
-	numberRegexString              = "^[0-9]+$"
-	hexadecimalRegexString         = "^[0-9a-fA-F]+$"
-	hexcolorRegexString            = "^#(?:[0-9a-fA-F]{3}|[0-9a-fA-F]{6})$"
-	rgbRegexString                 = "^rgb\\(\\s*(?:(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])|(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%)\\s*\\)$"
-	rgbaRegexString                = "^rgba\\(\\s*(?:(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])|(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%)\\s*,\\s*(?:(?:0.[1-9]*)|[01])\\s*\\)$"
-	hslRegexString                 = "^hsl\\(\\s*(?:0|[1-9]\\d?|[12]\\d\\d|3[0-5]\\d|360)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*\\)$"
-	hslaRegexString                = "^hsla\\(\\s*(?:0|[1-9]\\d?|[12]\\d\\d|3[0-5]\\d|360)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0.[1-9]*)|[01])\\s*\\)$"
-	emailRegexString               = "^(?:(?:(?:(?:[a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(?:\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|(?:(?:\\x22)(?:(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(?:\\x20|\\x09)+)?(?:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:\\(?:[\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(\\x20|\\x09)+)?(?:\\x22)))@(?:(?:(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(?:(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.?$"
-	base64RegexString              = "^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=|[A-Za-z0-9+\\/]{4})$"
-	iSBN10RegexString              = "^(?:[0-9]{9}X|[0-9]{10})$"
-	iSBN13RegexString              = "^(?:(?:97(?:8|9))[0-9]{10})$"
-	uUID3RegexString               = "^[0-9a-f]{8}-[0-9a-f]{4}-3[0-9a-f]{3}-[0-9a-f]{4}-[0-9a-f]{12}$"
-	uUID4RegexString               = "^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
-	uUID5RegexString               = "^[0-9a-f]{8}-[0-9a-f]{4}-5[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
-	uUIDRegexString                = "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"
-	aSCIIRegexString               = "^[\x00-\x7F]*$"
-	printableASCIIRegexString      = "^[\x20-\x7E]*$"
-	multibyteRegexString           = "[^\x00-\x7F]"
-	dataURIRegexString             = "^data:.+\\/(.+);base64$"
-	latitudeRegexString            = "^[-+]?([1-8]?\\d(\\.\\d+)?|90(\\.0+)?)$"
-	longitudeRegexString           = "^[-+]?(180(\\.0+)?|((1[0-7]\\d)|([1-9]?\\d))(\\.\\d+)?)$"
-	sSNRegexString                 = `^\d{3}[- ]?\d{2}[- ]?\d{4}$`
-	hostnameRegexStringRFC952      = `^[a-zA-Z][a-zA-Z0-9\-\.]+[a-z-Az0-9]$`    // https://tools.ietf.org/html/rfc952
-	hostnameRegexStringRFC1123     = `^[a-zA-Z0-9][a-zA-Z0-9\-\.]+[a-z-Az0-9]$` // accepts hostname starting with a digit https://tools.ietf.org/html/rfc1123
+	alphaRegexString                 = "^[a-zA-Z]+$"
+	alphaNumericRegexString          = "^[a-zA-Z0-9]+$"
+	alphaUnicodeRegexString          = "^[\\p{L}]+$"
+	alphaUnicodeNumericRegexString   = "^[\\p{L}\\p{N}]+$"
+	numericRegexString               = "^[-+]?[0-9]+(?:\\.[0-9]+)?$"
+	numberRegexString                = "^[0-9]+$"
+	hexadecimalRegexString           = "^[0-9a-fA-F]+$"
+	hexcolorRegexString              = "^#(?:[0-9a-fA-F]{3}|[0-9a-fA-F]{6})$"
+	rgbRegexString                   = "^rgb\\(\\s*(?:(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])|(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%)\\s*\\)$"
+	rgbaRegexString                  = "^rgba\\(\\s*(?:(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])|(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%\\s*,\\s*(?:0|[1-9]\\d?|1\\d\\d?|2[0-4]\\d|25[0-5])%)\\s*,\\s*(?:(?:0.[1-9]*)|[01])\\s*\\)$"
+	hslRegexString                   = "^hsl\\(\\s*(?:0|[1-9]\\d?|[12]\\d\\d|3[0-5]\\d|360)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*\\)$"
+	hslaRegexString                  = "^hsla\\(\\s*(?:0|[1-9]\\d?|[12]\\d\\d|3[0-5]\\d|360)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0|[1-9]\\d?|100)%)\\s*,\\s*(?:(?:0.[1-9]*)|[01])\\s*\\)$"
+	emailRegexString                 = "^(?:(?:(?:(?:[a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(?:\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|(?:(?:\\x22)(?:(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(?:\\x20|\\x09)+)?(?:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:\\(?:[\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(?:(?:(?:\\x20|\\x09)*(?:\\x0d\\x0a))?(\\x20|\\x09)+)?(?:\\x22)))@(?:(?:(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(?:(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(?:(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])(?:[a-zA-Z]|\\d|-|\\.|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*(?:[a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.?$"
+	base64RegexString                = "^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=|[A-Za-z0-9+\\/]{4})$"
+	base64URLRegexString             = "^(?:[A-Za-z0-9-_]{4})*(?:[A-Za-z0-9-_]{2}==|[A-Za-z0-9-_]{3}=|[A-Za-z0-9-_]{4})$"
+	iSBN10RegexString                = "^(?:[0-9]{9}X|[0-9]{10})$"
+	iSBN13RegexString                = "^(?:(?:97(?:8|9))[0-9]{10})$"
+	uUID3RegexString                 = "^[0-9a-f]{8}-[0-9a-f]{4}-3[0-9a-f]{3}-[0-9a-f]{4}-[0-9a-f]{12}$"
+	uUID4RegexString                 = "^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
+	uUID5RegexString                 = "^[0-9a-f]{8}-[0-9a-f]{4}-5[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
+	uUIDRegexString                  = "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"
+	aSCIIRegexString                 = "^[\x00-\x7F]*$"
+	printableASCIIRegexString        = "^[\x20-\x7E]*$"
+	multibyteRegexString             = "[^\x00-\x7F]"
+	dataURIRegexString               = "^data:.+\\/(.+);base64$"
+	latitudeRegexString              = "^[-+]?([1-8]?\\d(\\.\\d+)?|90(\\.0+)?)$"
+	longitudeRegexString             = "^[-+]?(180(\\.0+)?|((1[0-7]\\d)|([1-9]?\\d))(\\.\\d+)?)$"
+	sSNRegexString                   = `^\d{3}[- ]?\d{2}[- ]?\d{4}$`
+	hostnameRegexStringRFC952        = `^[a-zA-Z][a-zA-Z0-9\-\.]+[a-z-Az0-9]$`    // https://tools.ietf.org/html/rfc952
+	hostnameRegexStringRFC1123       = `^[a-zA-Z0-9][a-zA-Z0-9\-\.]+[a-z-Az0-9]$` // accepts hostname starting with a digit https://tools.ietf.org/html/rfc1123
+	btcAddressRegexString            = `^[13][a-km-zA-HJ-NP-Z1-9]{25,34}$`        // bitcoin address
+	btcAddressUpperRegexStringBech32 = `^BC1[02-9AC-HJ-NP-Z]{7,76}$`              // bitcoin bech32 address https://en.bitcoin.it/wiki/Bech32
+	btcAddressLowerRegexStringBech32 = `^bc1[02-9ac-hj-np-z]{7,76}$`              // bitcoin bech32 address https://en.bitcoin.it/wiki/Bech32
+	ethAddressRegexString            = `^0x[0-9a-fA-F]{40}$`
+	ethAddressUpperRegexString       = `^0x[0-9A-F]{40}$`
+	ethAddressLowerRegexString       = `^0x[0-9a-f]{40}$`
+	uRLEncodedRegexString            = `(%[A-Fa-f0-9]{2})`
+	hTMLEncodedRegexString           = `&#[x]?([0-9a-fA-F]{2})|(&gt)|(&lt)|(&quot)|(&amp)+[;]?`
+	hTMLRegexString                  = `<[/]?([a-zA-Z]+).*?>`
 )
 
 var (
-	alphaRegex               = regexp.MustCompile(alphaRegexString)
-	alphaNumericRegex        = regexp.MustCompile(alphaNumericRegexString)
-	alphaUnicodeRegex        = regexp.MustCompile(alphaUnicodeRegexString)
-	alphaUnicodeNumericRegex = regexp.MustCompile(alphaUnicodeNumericRegexString)
-	numericRegex             = regexp.MustCompile(numericRegexString)
-	numberRegex              = regexp.MustCompile(numberRegexString)
-	hexadecimalRegex         = regexp.MustCompile(hexadecimalRegexString)
-	hexcolorRegex            = regexp.MustCompile(hexcolorRegexString)
-	rgbRegex                 = regexp.MustCompile(rgbRegexString)
-	rgbaRegex                = regexp.MustCompile(rgbaRegexString)
-	hslRegex                 = regexp.MustCompile(hslRegexString)
-	hslaRegex                = regexp.MustCompile(hslaRegexString)
-	emailRegex               = regexp.MustCompile(emailRegexString)
-	base64Regex              = regexp.MustCompile(base64RegexString)
-	iSBN10Regex              = regexp.MustCompile(iSBN10RegexString)
-	iSBN13Regex              = regexp.MustCompile(iSBN13RegexString)
-	uUID3Regex               = regexp.MustCompile(uUID3RegexString)
-	uUID4Regex               = regexp.MustCompile(uUID4RegexString)
-	uUID5Regex               = regexp.MustCompile(uUID5RegexString)
-	uUIDRegex                = regexp.MustCompile(uUIDRegexString)
-	aSCIIRegex               = regexp.MustCompile(aSCIIRegexString)
-	printableASCIIRegex      = regexp.MustCompile(printableASCIIRegexString)
-	multibyteRegex           = regexp.MustCompile(multibyteRegexString)
-	dataURIRegex             = regexp.MustCompile(dataURIRegexString)
-	latitudeRegex            = regexp.MustCompile(latitudeRegexString)
-	longitudeRegex           = regexp.MustCompile(longitudeRegexString)
-	sSNRegex                 = regexp.MustCompile(sSNRegexString)
-	hostnameRegexRFC952      = regexp.MustCompile(hostnameRegexStringRFC952)
-	hostnameRegexRFC1123     = regexp.MustCompile(hostnameRegexStringRFC1123)
+	alphaRegex                 = regexp.MustCompile(alphaRegexString)
+	alphaNumericRegex          = regexp.MustCompile(alphaNumericRegexString)
+	alphaUnicodeRegex          = regexp.MustCompile(alphaUnicodeRegexString)
+	alphaUnicodeNumericRegex   = regexp.MustCompile(alphaUnicodeNumericRegexString)
+	numericRegex               = regexp.MustCompile(numericRegexString)
+	numberRegex                = regexp.MustCompile(numberRegexString)
+	hexadecimalRegex           = regexp.MustCompile(hexadecimalRegexString)
+	hexcolorRegex              = regexp.MustCompile(hexcolorRegexString)
+	rgbRegex                   = regexp.MustCompile(rgbRegexString)
+	rgbaRegex                  = regexp.MustCompile(rgbaRegexString)
+	hslRegex                   = regexp.MustCompile(hslRegexString)
+	hslaRegex                  = regexp.MustCompile(hslaRegexString)
+	emailRegex                 = regexp.MustCompile(emailRegexString)
+	base64Regex                = regexp.MustCompile(base64RegexString)
+	base64URLRegex             = regexp.MustCompile(base64URLRegexString)
+	iSBN10Regex                = regexp.MustCompile(iSBN10RegexString)
+	iSBN13Regex                = regexp.MustCompile(iSBN13RegexString)
+	uUID3Regex                 = regexp.MustCompile(uUID3RegexString)
+	uUID4Regex                 = regexp.MustCompile(uUID4RegexString)
+	uUID5Regex                 = regexp.MustCompile(uUID5RegexString)
+	uUIDRegex                  = regexp.MustCompile(uUIDRegexString)
+	aSCIIRegex                 = regexp.MustCompile(aSCIIRegexString)
+	printableASCIIRegex        = regexp.MustCompile(printableASCIIRegexString)
+	multibyteRegex             = regexp.MustCompile(multibyteRegexString)
+	dataURIRegex               = regexp.MustCompile(dataURIRegexString)
+	latitudeRegex              = regexp.MustCompile(latitudeRegexString)
+	longitudeRegex             = regexp.MustCompile(longitudeRegexString)
+	sSNRegex                   = regexp.MustCompile(sSNRegexString)
+	hostnameRegexRFC952        = regexp.MustCompile(hostnameRegexStringRFC952)
+	hostnameRegexRFC1123       = regexp.MustCompile(hostnameRegexStringRFC1123)
+	btcAddressRegex            = regexp.MustCompile(btcAddressRegexString)
+	btcUpperAddressRegexBech32 = regexp.MustCompile(btcAddressUpperRegexStringBech32)
+	btcLowerAddressRegexBech32 = regexp.MustCompile(btcAddressLowerRegexStringBech32)
+	ethAddressRegex            = regexp.MustCompile(ethAddressRegexString)
+	ethaddressRegexUpper       = regexp.MustCompile(ethAddressUpperRegexString)
+	ethAddressRegexLower       = regexp.MustCompile(ethAddressLowerRegexString)
+	uRLEncodedRegex            = regexp.MustCompile(uRLEncodedRegexString)
+	hTMLEncodedRegex           = regexp.MustCompile(hTMLEncodedRegexString)
+	hTMLRegex                  = regexp.MustCompile(hTMLRegexString)
 )

testdata/a.go

@@ -0,0 +1 @@
+package testdata

translations.go

@@ -7,5 +7,5 @@ import ut "github.com/go-playground/universal-translator"
 type TranslationFunc func(ut ut.Translator, fe FieldError) string
 
 // RegisterTranslationsFunc allows for registering of translations
-// for a 'ut.Translator' for use withing the 'TranslationFunc'
+// for a 'ut.Translator' for use within the 'TranslationFunc'
 type RegisterTranslationsFunc func(ut ut.Translator) error

translations/en/en.go

@@ -429,7 +429,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag())
+						err = fmt.Errorf("tag '%s' cannot be used on a struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("lt-datetime", fe.Field())
@@ -548,7 +549,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag())
+						err = fmt.Errorf("tag '%s' cannot be used on a struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("lte-datetime", fe.Field())
@@ -667,7 +669,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag())
+						err = fmt.Errorf("tag '%s' cannot be used on a struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("gt-datetime", fe.Field())
@@ -786,7 +789,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag())
+						err = fmt.Errorf("tag '%s' cannot be used on a struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("gte-datetime", fe.Field())

translations/fr/fr.go

@@ -429,7 +429,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag())
+						err = fmt.Errorf("tag '%s' cannot be used on a struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("lt-datetime", fe.Field())
@@ -548,7 +549,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag())
+						err = fmt.Errorf("tag '%s' cannot be used on a struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("lte-datetime", fe.Field())
@@ -667,7 +669,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag())
+						err = fmt.Errorf("tag '%s' cannot be used on a struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("gt-datetime", fe.Field())
@@ -786,7 +789,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("tag '%s' cannot be used on a struct type.", fe.Tag())
+						err = fmt.Errorf("tag '%s' cannot be used on a struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("gte-datetime", fe.Field())

translations/pt_BR/pt_BR.go

@@ -429,7 +429,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("a tag '%s' não pode ser usada em uma struct type.", fe.Tag())
+						err = fmt.Errorf("a tag '%s' não pode ser usada em uma struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("lt-datetime", fe.Field())
@@ -548,7 +549,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("a tag '%s' não pode ser usado em uma struct type.", fe.Tag())
+						err = fmt.Errorf("a tag '%s' não pode ser usado em uma struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("lte-datetime", fe.Field())
@@ -667,7 +669,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("a tag '%s' não pode ser usado em uma struct type.", fe.Tag())
+						err = fmt.Errorf("a tag '%s' não pode ser usado em uma struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("gt-datetime", fe.Field())
@@ -786,7 +789,8 @@ func RegisterDefaultTranslations(v *validator.Validate, trans ut.Translator) (er
 
 				case reflect.Struct:
 					if fe.Type() != reflect.TypeOf(time.Time{}) {
-						err = fmt.Errorf("a tag '%s' não pode ser usado em uma struct type.", fe.Tag())
+						err = fmt.Errorf("a tag '%s' não pode ser usado em uma struct type", fe.Tag())
+						goto END
 					}
 
 					t, err = ut.T("gte-datetime", fe.Field())

validator.go

@@ -213,8 +213,8 @@ func (v *validate) traverseField(ctx context.Context, parent reflect.Value, curr
 		CONTINUE:
 			// if len == 0 then validating using 'Var' or 'VarWithValue'
 			// Var - doesn't make much sense to do it that way, should call 'Struct', but no harm...
-			// VarWithField - this allows for validating against each field withing the struct against a specific value
-			//                pretty handly in certain situations
+			// VarWithField - this allows for validating against each field within the struct against a specific value
+			//                pretty handy in certain situations
 			if len(cf.name) > 0 {
 				ns = append(append(ns, cf.altName...), '.')
 				structNs = append(append(structNs, cf.name...), '.')

validator_instance.go

@@ -71,7 +71,7 @@ type Validate struct {
 	structCache      *structCache
 }
 
-// New returns a new instacne of 'validate' with sane defaults.
+// New returns a new instance of 'validate' with sane defaults.
 func New() *Validate {
 
 	tc := new(tagCache)
@@ -97,7 +97,7 @@ func New() *Validate {
 	for k, val := range bakedInValidators {
 
 		// no need to error check here, baked in will always be valid
-		v.registerValidation(k, wrapFunc(val), true)
+		_ = v.registerValidation(k, wrapFunc(val), true)
 	}
 
 	v.pool = &sync.Pool{
@@ -489,7 +489,7 @@ func (v *Validate) StructExceptCtx(ctx context.Context, s interface{}, fields ..
 //
 // WARNING: a struct can be passed for validation eg. time.Time is a struct or
 // if you have a custom type and have registered a custom type handler, so must
-// allow it; however unforseen validations will occur if trying to validate a
+// allow it; however unforeseen validations will occur if trying to validate a
 // struct that is meant to be passed to 'validate.Struct'
 //
 // It returns InvalidValidationError for bad values passed in and nil or ValidationErrors as error otherwise.
@@ -507,7 +507,7 @@ func (v *Validate) Var(field interface{}, tag string) error {
 //
 // WARNING: a struct can be passed for validation eg. time.Time is a struct or
 // if you have a custom type and have registered a custom type handler, so must
-// allow it; however unforseen validations will occur if trying to validate a
+// allow it; however unforeseen validations will occur if trying to validate a
 // struct that is meant to be passed to 'validate.Struct'
 //
 // It returns InvalidValidationError for bad values passed in and nil or ValidationErrors as error otherwise.
@@ -541,7 +541,7 @@ func (v *Validate) VarCtx(ctx context.Context, field interface{}, tag string) (e
 //
 // WARNING: a struct can be passed for validation eg. time.Time is a struct or
 // if you have a custom type and have registered a custom type handler, so must
-// allow it; however unforseen validations will occur if trying to validate a
+// allow it; however unforeseen validations will occur if trying to validate a
 // struct that is meant to be passed to 'validate.Struct'
 //
 // It returns InvalidValidationError for bad values passed in and nil or ValidationErrors as error otherwise.
@@ -560,7 +560,7 @@ func (v *Validate) VarWithValue(field interface{}, other interface{}, tag string
 //
 // WARNING: a struct can be passed for validation eg. time.Time is a struct or
 // if you have a custom type and have registered a custom type handler, so must
-// allow it; however unforseen validations will occur if trying to validate a
+// allow it; however unforeseen validations will occur if trying to validate a
 // struct that is meant to be passed to 'validate.Struct'
 //
 // It returns InvalidValidationError for bad values passed in and nil or ValidationErrors as error otherwise.

validator_test.go

@@ -5,8 +5,10 @@ import (
 	"context"
 	"database/sql"
 	"database/sql/driver"
+	"encoding/base64"
 	"encoding/json"
 	"fmt"
+	"path/filepath"
 	"reflect"
 	"strings"
 	"testing"
@@ -1015,7 +1017,7 @@ func TestCrossStructLteFieldValidation(t *testing.T) {
 	NotEqual(t, errs, nil)
 	AssertError(t, errs, "", "", "", "", "ltecsfield")
 
-	// this test is for the WARNING about unforseen validation issues.
+	// this test is for the WARNING about unforeseen validation issues.
 	errs = validate.VarWithValue(test, now, "ltecsfield")
 	NotEqual(t, errs, nil)
 	Equal(t, len(errs.(ValidationErrors)), 6)
@@ -1112,7 +1114,7 @@ func TestCrossStructLtFieldValidation(t *testing.T) {
 	NotEqual(t, errs, nil)
 	AssertError(t, errs, "", "", "", "", "ltcsfield")
 
-	// this test is for the WARNING about unforseen validation issues.
+	// this test is for the WARNING about unforeseen validation issues.
 	errs = validate.VarWithValue(test, now, "ltcsfield")
 	NotEqual(t, errs, nil)
 	AssertError(t, errs, "Test.CreatedAt", "Test.CreatedAt", "CreatedAt", "CreatedAt", "ltcsfield")
@@ -1220,7 +1222,7 @@ func TestCrossStructGteFieldValidation(t *testing.T) {
 	NotEqual(t, errs, nil)
 	AssertError(t, errs, "", "", "", "", "gtecsfield")
 
-	// this test is for the WARNING about unforseen validation issues.
+	// this test is for the WARNING about unforeseen validation issues.
 	errs = validate.VarWithValue(test, now, "gtecsfield")
 	NotEqual(t, errs, nil)
 	AssertError(t, errs, "Test.CreatedAt", "Test.CreatedAt", "CreatedAt", "CreatedAt", "gtecsfield")
@@ -1316,7 +1318,7 @@ func TestCrossStructGtFieldValidation(t *testing.T) {
 	NotEqual(t, errs, nil)
 	AssertError(t, errs, "", "", "", "", "gtcsfield")
 
-	// this test is for the WARNING about unforseen validation issues.
+	// this test is for the WARNING about unforeseen validation issues.
 	errs = validate.VarWithValue(test, now, "gtcsfield")
 	NotEqual(t, errs, nil)
 	AssertError(t, errs, "Test.CreatedAt", "Test.CreatedAt", "CreatedAt", "CreatedAt", "gtcsfield")
@@ -4398,6 +4400,283 @@ func TestBase64Validation(t *testing.T) {
 	AssertError(t, errs, "", "", "", "", "base64")
 }
 
+func TestBase64URLValidation(t *testing.T) {
+	validate := New()
+
+	testCases := []struct {
+		decoded, encoded string
+		success          bool
+	}{
+		// empty string, although a valid base64 string, should fail
+		{"", "", false},
+		// invalid length
+		{"", "a", false},
+		// base64 with padding
+		{"f", "Zg==", true},
+		{"fo", "Zm8=", true},
+		// base64 without padding
+		{"foo", "Zm9v", true},
+		{"", "Zg", false},
+		{"", "Zm8", false},
+		// base64 URL safe encoding with invalid, special characters '+' and '/'
+		{"\x14\xfb\x9c\x03\xd9\x7e", "FPucA9l+", false},
+		{"\x14\xfb\x9c\x03\xf9\x73", "FPucA/lz", false},
+		// base64 URL safe encoding with valid, special characters '-' and '_'
+		{"\x14\xfb\x9c\x03\xd9\x7e", "FPucA9l-", true},
+		{"\x14\xfb\x9c\x03\xf9\x73", "FPucA_lz", true},
+		// non base64 characters
+		{"", "@mc=", false},
+		{"", "Zm 9", false},
+	}
+	for _, tc := range testCases {
+		err := validate.Var(tc.encoded, "base64url")
+		if tc.success {
+			Equal(t, err, nil)
+			// make sure encoded value is decoded back to the expected value
+			d, innerErr := base64.URLEncoding.DecodeString(tc.encoded)
+			Equal(t, innerErr, nil)
+			Equal(t, tc.decoded, string(d))
+		} else {
+			NotEqual(t, err, nil)
+			if len(tc.encoded) > 0 {
+				// make sure that indeed the encoded value was faulty
+				_, err := base64.URLEncoding.DecodeString(tc.encoded)
+				NotEqual(t, err, nil)
+			}
+		}
+	}
+}
+
+func TestFileValidation(t *testing.T) {
+	validate := New()
+
+	tests := []struct {
+		title    string
+		param    string
+		expected bool
+	}{
+		{"empty path", "", false},
+		{"regular file", filepath.Join("testdata", "a.go"), true},
+		{"missing file", filepath.Join("testdata", "no.go"), false},
+		{"directory, not a file", "testdata", false},
+	}
+
+	for _, test := range tests {
+		errs := validate.Var(test.param, "file")
+
+		if test.expected {
+			if !IsEqual(errs, nil) {
+				t.Fatalf("Test: '%s' failed Error: %s", test.title, errs)
+			}
+		} else {
+			if IsEqual(errs, nil) {
+				t.Fatalf("Test: '%s' failed Error: %s", test.title, errs)
+			}
+		}
+	}
+
+	PanicMatches(t, func() {
+		validate.Var(6, "file")
+	}, "Bad field type int")
+}
+
+func TestEthereumAddressValidation(t *testing.T) {
+
+	validate := New()
+
+	tests := []struct {
+		param    string
+		expected bool
+	}{
+		{"", false},
+		{"0x02F9AE5f22EA3fA88F05780B30385bEC", false},
+		{"123f681646d4a755815f9cb19e1acc8565a0c2ac", false},
+		{"0x02F9AE5f22EA3fA88F05780B30385bECFacbf130", true},
+		{"0x123f681646d4a755815f9cb19e1acc8565a0c2ac", true},
+	}
+
+	for i, test := range tests {
+
+		errs := validate.Var(test.param, "eth_addr")
+
+		if test.expected {
+			if !IsEqual(errs, nil) {
+				t.Fatalf("Index: %d eth_addr failed Error: %s", i, errs)
+			}
+		} else {
+			if IsEqual(errs, nil) {
+				t.Fatalf("Index: %d eth_addr failed Error: %s", i, errs)
+			} else {
+				val := getError(errs, "", "")
+				if val.Tag() != "eth_addr" {
+					t.Fatalf("Index: %d Latitude failed Error: %s", i, errs)
+				}
+			}
+		}
+	}
+}
+
+func TestBitcoinAddressValidation(t *testing.T) {
+
+	validate := New()
+
+	tests := []struct {
+		param    string
+		expected bool
+	}{
+		{"", false},
+		{"x", false},
+		{"0x02F9AE5f22EA3fA88F05780B30385bEC", false},
+		{"1A1zP1ePQGefi2DMPTifTL5SLmv7DivfNa", false},
+		{"1P9RQEr2XeE3PEb44ZE35sfZRRW1JH8Uqx", false},
+		{"3P14159I73E4gFr7JterCCQh9QjiTjiZrG", false},
+		{"3P141597f3E4gFr7JterCCQh9QjiTjiZrG", false},
+		{"37qgekLpCCHrQuSjvX3fs496FWTGsHFHizjJAs6NPcR47aefnnCWECAhHV6E3g4YN7u7Yuwod5Y", false},
+		{"dzb7VV1Ui55BARxv7ATxAtCUeJsANKovDGWFVgpTbhq9gvPqP3yv", false},
+		{"MuNu7ZAEDFiHthiunm7dPjwKqrVNCM3mAz6rP9zFveQu14YA8CxExSJTHcVP9DErn6u84E6Ej7S", false},
+		{"rPpQpYknyNQ5AEHuY6H8ijJJrYc2nDKKk9jjmKEXsWzyAQcFGpDLU2Zvsmoi8JLR7hAwoy3RQWf", false},
+		{"4Uc3FmN6NQ6zLBK5QQBXRBUREaaHwCZYsGCueHauuDmJpZKn6jkEskMB2Zi2CNgtb5r6epWEFfUJq", false},
+		{"7aQgR5DFQ25vyXmqZAWmnVCjL3PkBcdVkBUpjrjMTcghHx3E8wb", false},
+		{"17QpPprjeg69fW1DV8DcYYCKvWjYhXvWkov6MJ1iTTvMFj6weAqW7wybZeH57WTNxXVCRH4veVs", false},
+		{"KxuACDviz8Xvpn1xAh9MfopySZNuyajYMZWz16Dv2mHHryznWUp3", false},
+		{"7nK3GSmqdXJQtdohvGfJ7KsSmn3TmGqExug49583bDAL91pVSGq5xS9SHoAYL3Wv3ijKTit65th", false},
+		{"cTivdBmq7bay3RFGEBBuNfMh2P1pDCgRYN2Wbxmgwr4ki3jNUL2va", false},
+		{"gjMV4vjNjyMrna4fsAr8bWxAbwtmMUBXJS3zL4NJt5qjozpbQLmAfK1uA3CquSqsZQMpoD1g2nk", false},
+		{"emXm1naBMoVzPjbk7xpeTVMFy4oDEe25UmoyGgKEB1gGWsK8kRGs", false},
+		{"7VThQnNRj1o3Zyvc7XHPRrjDf8j2oivPTeDXnRPYWeYGE4pXeRJDZgf28ppti5hsHWXS2GSobdqyo", false},
+		{"1G9u6oCVCPh2o8m3t55ACiYvG1y5BHewUkDSdiQarDcYXXhFHYdzMdYfUAhfxn5vNZBwpgUNpso", false},
+		{"31QQ7ZMLkScDiB4VyZjuptr7AEc9j1SjstF7pRoLhHTGkW4Q2y9XELobQmhhWxeRvqcukGd1XCq", false},
+		{"DHqKSnpxa8ZdQyH8keAhvLTrfkyBMQxqngcQA5N8LQ9KVt25kmGN", false},
+		{"2LUHcJPbwLCy9GLH1qXmfmAwvadWw4bp4PCpDfduLqV17s6iDcy1imUwhQJhAoNoN1XNmweiJP4i", false},
+		{"7USRzBXAnmck8fX9HmW7RAb4qt92VFX6soCnts9s74wxm4gguVhtG5of8fZGbNPJA83irHVY6bCos", false},
+		{"1DGezo7BfVebZxAbNT3XGujdeHyNNBF3vnficYoTSp4PfK2QaML9bHzAMxke3wdKdHYWmsMTJVu", false},
+		{"2D12DqDZKwCxxkzs1ZATJWvgJGhQ4cFi3WrizQ5zLAyhN5HxuAJ1yMYaJp8GuYsTLLxTAz6otCfb", false},
+		{"8AFJzuTujXjw1Z6M3fWhQ1ujDW7zsV4ePeVjVo7D1egERqSW9nZ", false},
+		{"163Q17qLbTCue8YY3AvjpUhotuaodLm2uqMhpYirsKjVqnxJRWTEoywMVY3NbBAHuhAJ2cF9GAZ", false},
+		{"2MnmgiRH4eGLyLc9eAqStzk7dFgBjFtUCtu", false},
+		{"461QQ2sYWxU7H2PV4oBwJGNch8XVTYYbZxU", false},
+		{"2UCtv53VttmQYkVU4VMtXB31REvQg4ABzs41AEKZ8UcB7DAfVzdkV9JDErwGwyj5AUHLkmgZeobs", false},
+		{"cSNjAsnhgtiFMi6MtfvgscMB2Cbhn2v1FUYfviJ1CdjfidvmeW6mn", false},
+		{"gmsow2Y6EWAFDFE1CE4Hd3Tpu2BvfmBfG1SXsuRARbnt1WjkZnFh1qGTiptWWbjsq2Q6qvpgJVj", false},
+		{"nksUKSkzS76v8EsSgozXGMoQFiCoCHzCVajFKAXqzK5on9ZJYVHMD5CKwgmX3S3c7M1U3xabUny", false},
+		{"L3favK1UzFGgdzYBF2oBT5tbayCo4vtVBLJhg2iYuMeePxWG8SQc", false},
+		{"7VxLxGGtYT6N99GdEfi6xz56xdQ8nP2dG1CavuXx7Rf2PrvNMTBNevjkfgs9JmkcGm6EXpj8ipyPZ ", false},
+		{"2mbZwFXF6cxShaCo2czTRB62WTx9LxhTtpP", false},
+		{"dB7cwYdcPSgiyAwKWL3JwCVwSk6epU2txw", false},
+		{"HPhFUhUAh8ZQQisH8QQWafAxtQYju3SFTX", false},
+		{"4ctAH6AkHzq5ioiM1m9T3E2hiYEev5mTsB", false},
+		{"31uEbMgunupShBVTewXjtqbBv5MndwfXhb", false},
+		{"175tWpb8K1S7NmH4Zx6rewF9WQrcZv245W", false},
+		{"Hn1uFi4dNexWrqARpjMqgT6cX1UsNPuV3cHdGg9ExyXw8HTKadbktRDtdeVmY3M1BxJStiL4vjJ", false},
+		{"Sq3fDbvutABmnAHHExJDgPLQn44KnNC7UsXuT7KZecpaYDMU9Txs", false},
+		{"6TqWyrqdgUEYDQU1aChMuFMMEimHX44qHFzCUgGfqxGgZNMUVWJ", false},
+		{"giqJo7oWqFxNKWyrgcBxAVHXnjJ1t6cGoEffce5Y1y7u649Noj5wJ4mmiUAKEVVrYAGg2KPB3Y4", false},
+		{"cNzHY5e8vcmM3QVJUcjCyiKMYfeYvyueq5qCMV3kqcySoLyGLYUK", false},
+		{"37uTe568EYc9WLoHEd9jXEvUiWbq5LFLscNyqvAzLU5vBArUJA6eydkLmnMwJDjkL5kXc2VK7ig", false},
+		{"EsYbG4tWWWY45G31nox838qNdzksbPySWc", false},
+		{"nbuzhfwMoNzA3PaFnyLcRxE9bTJPDkjZ6Rf6Y6o2ckXZfzZzXBT", false},
+		{"cQN9PoxZeCWK1x56xnz6QYAsvR11XAce3Ehp3gMUdfSQ53Y2mPzx", false},
+		{"1Gm3N3rkef6iMbx4voBzaxtXcmmiMTqZPhcuAepRzYUJQW4qRpEnHvMojzof42hjFRf8PE2jPde", false},
+		{"2TAq2tuN6x6m233bpT7yqdYQPELdTDJn1eU", false},
+		{"ntEtnnGhqPii4joABvBtSEJG6BxjT2tUZqE8PcVYgk3RHpgxgHDCQxNbLJf7ardf1dDk2oCQ7Cf", false},
+		{"Ky1YjoZNgQ196HJV3HpdkecfhRBmRZdMJk89Hi5KGfpfPwS2bUbfd", false},
+		{"2A1q1YsMZowabbvta7kTy2Fd6qN4r5ZCeG3qLpvZBMzCixMUdkN2Y4dHB1wPsZAeVXUGD83MfRED", false},
+		{"1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62i", true},
+		{"1Ax4gZtb7gAit2TivwejZHYtNNLT18PUXJ", true},
+		{"1C5bSj1iEGUgSTbziymG7Cn18ENQuT36vv", true},
+		{"1Gqk4Tv79P91Cc1STQtU3s1W6277M2CVWu", true},
+		{"1JwMWBVLtiqtscbaRHai4pqHokhFCbtoB4", true},
+		{"19dcawoKcZdQz365WpXWMhX6QCUpR9SY4r", true},
+		{"13p1ijLwsnrcuyqcTvJXkq2ASdXqcnEBLE", true},
+		{"1BvBMSEYstWetqTFn5Au4m4GFg7xJaNVN2", true},
+		{"3P14159f73E4gFr7JterCCQh9QjiTjiZrG", true},
+		{"3CMNFxN1oHBc4R1EpboAL5yzHGgE611Xou", true},
+		{"3QjYXhTkvuj8qPaXHTTWb5wjXhdsLAAWVy", true},
+		{"3AnNxabYGoTxYiTEZwFEnerUoeFXK2Zoks", true},
+		{"33vt8ViH5jsr115AGkW6cEmEz9MpvJSwDk", true},
+		{"3QCzvfL4ZRvmJFiWWBVwxfdaNBT8EtxB5y", true},
+		{"37Sp6Rv3y4kVd1nQ1JV5pfqXccHNyZm1x3", true},
+		{"3ALJH9Y951VCGcVZYAdpA3KchoP9McEj1G", true},
+		{"12KYrjTdVGjFMtaxERSk3gphreJ5US8aUP", true},
+		{"12QeMLzSrB8XH8FvEzPMVoRxVAzTr5XM2y", true},
+		{"1oNLrsHnBcR6dpaBpwz3LSwutbUNkNSjs", true},
+		{"1SQHtwR5oJRKLfiWQ2APsAd9miUc4k2ez", true},
+		{"116CGDLddrZhMrTwhCVJXtXQpxygTT1kHd", true},
+		{"3NJZLcZEEYBpxYEUGewU4knsQRn1WM5Fkt", true},
+	}
+
+	for i, test := range tests {
+
+		errs := validate.Var(test.param, "btc_addr")
+
+		if test.expected {
+			if !IsEqual(errs, nil) {
+				t.Fatalf("Index: %d btc_addr failed with Error: %s", i, errs)
+			}
+		} else {
+			if IsEqual(errs, nil) {
+				t.Fatalf("Index: %d btc_addr failed with Error: %s", i, errs)
+			} else {
+				val := getError(errs, "", "")
+				if val.Tag() != "btc_addr" {
+					t.Fatalf("Index: %d Latitude failed with Error: %s", i, errs)
+				}
+			}
+		}
+	}
+}
+
+func TestBitcoinBech32AddressValidation(t *testing.T) {
+
+	validate := New()
+
+	tests := []struct {
+		param    string
+		expected bool
+	}{
+		{"", false},
+		{"bc1rw5uspcuh", false},
+		{"bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t5", false},
+		{"BC13W508D6QEJXTDG4Y5R3ZARVARY0C5XW7KN40WF2", false},
+		{"qw508d6qejxtdg4y5r3zarvary0c5xw7kg3g4ty", false},
+		{"bc1rw5uspcuh", false},
+		{"bc10w508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7kw5rljs90", false},
+		{"BC1QW508d6QEJxTDG4y5R3ZArVARY0C5XW7KV8F3T4", false},
+		{"BC1QR508D6QEJXTDG4Y5R3ZARVARYV98GJ9P", false},
+		{"bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t5", false},
+		{"bc10w508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7kw5rljs90", false},
+		{"bc1pw508d6qejxtdg4y5r3zarqfsj6c3", false},
+		{"bc1zw508d6qejxtdg4y5r3zarvaryvqyzf3du", false},
+		{"bc1gmk9yu", false},
+		{"bc1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3pjxtptv", false},
+		{"BC1QW508D6QEJXTDG4Y5R3ZARVARY0C5XW7KV8F3T4", true},
+		{"bc1pw508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7k7grplx", true},
+		{"bc1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3qccfmv3", true},
+		{"BC1SW50QA3JX3S", true},
+		{"bc1zw508d6qejxtdg4y5r3zarvaryvg6kdaj", true},
+	}
+
+	for i, test := range tests {
+
+		errs := validate.Var(test.param, "btc_addr_bech32")
+
+		if test.expected {
+			if !IsEqual(errs, nil) {
+				t.Fatalf("Index: %d btc_addr_bech32 failed with Error: %s", i, errs)
+			}
+		} else {
+			if IsEqual(errs, nil) {
+				t.Fatalf("Index: %d btc_addr_bech32 failed with Error: %s", i, errs)
+			} else {
+				val := getError(errs, "", "")
+				if val.Tag() != "btc_addr_bech32" {
+					t.Fatalf("Index: %d Latitude failed with Error: %s", i, errs)
+				}
+			}
+		}
+	}
+}
+
 func TestNoStructLevelValidation(t *testing.T) {
 
 	type Inner struct {
@@ -5873,6 +6152,11 @@ func TestEmail(t *testing.T) {
 	errs = validate.Var(s, "email")
 	Equal(t, errs, nil)
 
+	s = "mail@domain_with_underscores.org"
+	errs = validate.Var(s, "email")
+	NotEqual(t, errs, nil)
+	AssertError(t, errs, "", "", "", "", "email")
+
 	s = ""
 	errs = validate.Var(s, "email")
 	NotEqual(t, errs, nil)
@@ -5991,8 +6275,7 @@ func TestNumber(t *testing.T) {
 
 	i := 1
 	errs = validate.Var(i, "number")
-	NotEqual(t, errs, nil)
-	AssertError(t, errs, "", "", "", "", "number")
+	Equal(t, errs, nil)
 }
 
 func TestNumeric(t *testing.T) {
@@ -6035,8 +6318,7 @@ func TestNumeric(t *testing.T) {
 
 	i := 1
 	errs = validate.Var(i, "numeric")
-	NotEqual(t, errs, nil)
-	AssertError(t, errs, "", "", "", "", "numeric")
+	Equal(t, errs, nil)
 }
 
 func TestAlphaNumeric(t *testing.T) {
@@ -6593,8 +6875,8 @@ func TestTranslations(t *testing.T) {
 
 		}, func(ut ut.Translator, fe FieldError) string {
 
-			t, err := ut.T(fe.Tag(), fe.Field())
-			if err != nil {
+			t, transErr := ut.T(fe.Tag(), fe.Field())
+			if transErr != nil {
 				fmt.Printf("warning: error translating FieldError: %#v", fe.(*fieldError))
 				return fe.(*fieldError).Error()
 			}
@@ -7451,6 +7733,18 @@ func TestUniqueValidation(t *testing.T) {
 		param    interface{}
 		expected bool
 	}{
+		// Arrays
+		{[2]string{"a", "b"}, true},
+		{[2]int{1, 2}, true},
+		{[2]float64{1, 2}, true},
+		{[2]interface{}{"a", "b"}, true},
+		{[2]interface{}{"a", 1}, true},
+		{[2]float64{1, 1}, false},
+		{[2]int{1, 1}, false},
+		{[2]string{"a", "a"}, false},
+		{[2]interface{}{"a", "a"}, false},
+		{[4]interface{}{"a", 1, "b", 1}, false},
+		// Slices
 		{[]string{"a", "b"}, true},
 		{[]int{1, 2}, true},
 		{[]float64{1, 2}, true},
@@ -7461,6 +7755,17 @@ func TestUniqueValidation(t *testing.T) {
 		{[]string{"a", "a"}, false},
 		{[]interface{}{"a", "a"}, false},
 		{[]interface{}{"a", 1, "b", 1}, false},
+		// Maps
+		{map[string]string{"one": "a", "two": "b"}, true},
+		{map[string]int{"one": 1, "two": 2}, true},
+		{map[string]float64{"one": 1, "two": 2}, true},
+		{map[string]interface{}{"one": "a", "two": "b"}, true},
+		{map[string]interface{}{"one": "a", "two": 1}, true},
+		{map[string]float64{"one": 1, "two": 1}, false},
+		{map[string]int{"one": 1, "two": 1}, false},
+		{map[string]string{"one": "a", "two": "a"}, false},
+		{map[string]interface{}{"one": "a", "two": "a"}, false},
+		{map[string]interface{}{"one": "a", "two": 1, "three": "b", "four": 1}, false},
 	}
 
 	validate := New()
@@ -7487,6 +7792,129 @@ func TestUniqueValidation(t *testing.T) {
 	PanicMatches(t, func() { validate.Var(1.0, "unique") }, "Bad field type float64")
 }
 
+func TestHTMLValidation(t *testing.T) {
+	tests := []struct {
+		param    string
+		expected bool
+	}{
+		{"<html>", true},
+		{"<script>", true},
+		{"<stillworks>", true},
+		{"</html", false},
+		{"</script>", true},
+		{"<//script>", false},
+		{"<123nonsense>", false},
+		{"test", false},
+		{"&example", false},
+	}
+
+	validate := New()
+
+	for i, test := range tests {
+
+		errs := validate.Var(test.param, "html")
+
+		if test.expected {
+			if !IsEqual(errs, nil) {
+				t.Fatalf("Index: %d html failed Error: %v", i, errs)
+			}
+		} else {
+			if IsEqual(errs, nil) {
+				t.Fatalf("Index: %d html failed Error: %v", i, errs)
+			} else {
+				val := getError(errs, "", "")
+				if val.Tag() != "html" {
+					t.Fatalf("Index: %d html failed Error: %v", i, errs)
+				}
+			}
+		}
+	}
+}
+
+func TestHTMLEncodedValidation(t *testing.T) {
+	tests := []struct {
+		param    string
+		expected bool
+	}{
+		{"&#x3c;", true},
+		{"&#xaf;", true},
+		{"&#x00;", true},
+		{"&#xf0;", true},
+		{"&#x3c", true},
+		{"&#xaf", true},
+		{"&#x00", true},
+		{"&#xf0", true},
+		{"&#ab", true},
+		{"&lt;", true},
+		{"&gt;", true},
+		{"&quot;", true},
+		{"&amp;", true},
+		{"#x0a", false},
+		{"&x00", false},
+		{"&#x1z", false},
+	}
+
+	validate := New()
+
+	for i, test := range tests {
+
+		errs := validate.Var(test.param, "html_encoded")
+
+		if test.expected {
+			if !IsEqual(errs, nil) {
+				t.Fatalf("Index: %d html_encoded failed Error: %v", i, errs)
+			}
+		} else {
+			if IsEqual(errs, nil) {
+				t.Fatalf("Index: %d html_enocded failed Error: %v", i, errs)
+			} else {
+				val := getError(errs, "", "")
+				if val.Tag() != "html_encoded" {
+					t.Fatalf("Index: %d html_encoded failed Error: %v", i, errs)
+				}
+			}
+		}
+	}
+}
+
+func TestURLEncodedValidation(t *testing.T) {
+	tests := []struct {
+		param    string
+		expected bool
+	}{
+		{"%20", true},
+		{"%af", true},
+		{"%ff", true},
+		{"<%az", false},
+		{"%test%", false},
+		{"a%b", false},
+		{"1%2", false},
+		{"%%a%%", false},
+	}
+
+	validate := New()
+
+	for i, test := range tests {
+
+		errs := validate.Var(test.param, "url_encoded")
+
+		if test.expected {
+			if !IsEqual(errs, nil) {
+				t.Fatalf("Index: %d url_encoded failed Error: %v", i, errs)
+			}
+		} else {
+			if IsEqual(errs, nil) {
+				t.Fatalf("Index: %d url_enocded failed Error: %v", i, errs)
+			} else {
+				val := getError(errs, "", "")
+				if val.Tag() != "url_encoded" {
+					t.Fatalf("Index: %d url_encoded failed Error: %v", i, errs)
+				}
+			}
+		}
+	}
+}
+
 func TestKeys(t *testing.T) {
 
 	type Test struct {
@@ -7567,7 +7995,7 @@ func TestKeys(t *testing.T) {
 	// test bad tag definitions
 
 	PanicMatches(t, func() { validate.Var(map[string]string{"key": "val"}, "endkeys,dive,eq=val") }, "'endkeys' tag encountered without a corresponding 'keys' tag")
-	PanicMatches(t, func() { validate.Var(1, "keys,eq=1,endkeys") }, "'keys' tag must be immediately preceeded by the 'dive' tag")
+	PanicMatches(t, func() { validate.Var(1, "keys,eq=1,endkeys") }, "'keys' tag must be immediately preceded by the 'dive' tag")
 
 	// test custom tag name
 	validate = New()