Support Match validate function for tag

validation/README.md

@@ -55,9 +55,10 @@ Struct Tag Use:
 	// validation function follow with "valid" tag
 	// functions divide with ";"
 	// parameters in parentheses "()" and divide with ","
+	// Match function's pattern string must in "//"
 	type user struct {
 		Id   int
-		Name string `valid:"Required"`
+		Name string `valid:"Required;Match(/^(test)?\\w*@;com$/)"`
 		Age  int    `valid:"Required;Range(1, 140)"`
 	}
 
@@ -86,8 +87,7 @@ Struct Tag Functions:
 	Alpha
 	Numeric
 	AlphaNumeric
-	Match(regexp string)		// does not support yet
-	NoMatch(regexp string)	// does not support yet
+	Match(pattern string)
 	AlphaDash
 	Email
 	IP

validation/util.go

@@ -26,6 +26,7 @@ var (
 		"apply":     true,
 		"Check":     true,
 		"Valid":     true,
+		"NoMatch":   true,
 	}
 )
 
@@ -50,7 +51,7 @@ type Funcs map[string]reflect.Value
 func (f Funcs) Call(name string, params ...interface{}) (result []reflect.Value, err error) {
 	defer func() {
 		if r := recover(); r != nil {
-			err = r.(error)
+			err = fmt.Errorf("%v", r)
 		}
 	}()
 	if _, ok := f[name]; !ok {
@@ -82,10 +83,17 @@ func getValidFuncs(f reflect.StructField) (vfs []ValidFunc, err error) {
 	if len(tag) == 0 {
 		return
 	}
+	if vfs, tag, err = getRegFuncs(tag, f.Name); err != nil {
+		fmt.Printf("%+v\n", err)
+		return
+	}
 	fs := strings.Split(tag, ";")
 	for _, vfunc := range fs {
 		var vf ValidFunc
-		vf, err = parseFunc(vfunc)
+		if len(vfunc) == 0 {
+			continue
+		}
+		vf, err = parseFunc(vfunc, f.Name)
 		if err != nil {
 			return
 		}
@@ -94,10 +102,33 @@ func getValidFuncs(f reflect.StructField) (vfs []ValidFunc, err error) {
 	return
 }
 
-func parseFunc(vfunc string) (v ValidFunc, err error) {
+// Get Match function
+// May be get NoMatch function in the future
+func getRegFuncs(tag, key string) (vfs []ValidFunc, str string, err error) {
+	tag = strings.TrimSpace(tag)
+	index := strings.Index(tag, "Match(/")
+	if index == -1 {
+		str = tag
+		return
+	}
+	end := strings.LastIndex(tag, "/)")
+	if end < index {
+		err = fmt.Errorf("invalid Match function")
+		return
+	}
+	reg, err := regexp.Compile(tag[index+len("Match(/") : end])
+	if err != nil {
+		return
+	}
+	vfs = []ValidFunc{ValidFunc{"Match", []interface{}{reg, key}}}
+	str = strings.TrimSpace(tag[:index]) + strings.TrimSpace(tag[end+len("/)"):])
+	return
+}
+
+func parseFunc(vfunc, key string) (v ValidFunc, err error) {
 	defer func() {
 		if r := recover(); r != nil {
-			err = r.(error)
+			err = fmt.Errorf("%v", r)
 		}
 	}()
 
@@ -114,7 +145,7 @@ func parseFunc(vfunc string) (v ValidFunc, err error) {
 			err = fmt.Errorf("%s require %d parameters", vfunc, num)
 			return
 		}
-		v = ValidFunc{vfunc, []interface{}{vfunc}}
+		v = ValidFunc{vfunc, []interface{}{key}}
 		return
 	}
 
@@ -136,7 +167,7 @@ func parseFunc(vfunc string) (v ValidFunc, err error) {
 		return
 	}
 
-	tParams, err := trim(name, params)
+	tParams, err := trim(name, key, params)
 	if err != nil {
 		return
 	}
@@ -155,7 +186,7 @@ func numIn(name string) (num int, err error) {
 	return
 }
 
-func trim(name string, s []string) (ts []interface{}, err error) {
+func trim(name, key string, s []string) (ts []interface{}, err error) {
 	ts = make([]interface{}, len(s), len(s)+1)
 	fn, ok := funcs[name]
 	if !ok {
@@ -170,7 +201,7 @@ func trim(name string, s []string) (ts []interface{}, err error) {
 		}
 		ts[i] = param
 	}
-	ts = append(ts, name)
+	ts = append(ts, key)
 	return
 }
 

validation/util_test.go

@@ -8,8 +8,9 @@ import (
 type user struct {
 	Id    int
 	Tag   string `valid:"Maxx(aa)"`
-	Name string `valid:"Required"`
+	Name  string `valid:"Required;"`
 	Age   int    `valid:"Required;Range(1, 140)"`
+	match string `valid:"Required; Match(/^(test)?\\w*@(/test/);com$/);Max(2)"`
 }
 
 func TestGetValidFuncs(t *testing.T) {
@@ -55,6 +56,14 @@ func TestGetValidFuncs(t *testing.T) {
 	if vfs[1].Name != "Range" && len(vfs[1].Params) != 2 {
 		t.Error("Range funcs should be got")
 	}
+
+	f, _ = tf.FieldByName("match")
+	if vfs, err = getValidFuncs(f); err != nil {
+		t.Fatal(err)
+	}
+	if len(vfs) != 3 {
+		t.Fatal("should get 3 ValidFunc but now is", len(vfs))
+	}
 }
 
 func TestCall(t *testing.T) {

validation/validation_test.go

@@ -283,12 +283,12 @@ func TestZipCode(t *testing.T) {
 func TestValid(t *testing.T) {
 	type user struct {
 		Id   int
-		Name string `valid:"Required"`
+		Name string `valid:"Required;Match(/^(test)?\\w*@(/test/);com$/)"`
 		Age  int    `valid:"Required;Range(1, 140)"`
 	}
 	valid := Validation{}
 
-	u := user{Name: "test", Age: 40}
+	u := user{Name: "test@/test/;com", Age: 40}
 	b, err := valid.Valid(u)
 	if err != nil {
 		t.Fatal(err)
@@ -297,7 +297,7 @@ func TestValid(t *testing.T) {
 		t.Error("validation should be passed")
 	}
 
-	uptr := &user{Name: "test", Age: 180}
+	uptr := &user{Name: "test", Age: 40}
 	b, err = valid.Valid(uptr)
 	if err != nil {
 		t.Fatal(err)
@@ -305,4 +305,13 @@ func TestValid(t *testing.T) {
 	if b {
 		t.Error("validation should not be passed")
 	}
+
+	u = user{Name: "test@/test/;com", Age: 180}
+	b, err = valid.Valid(u)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if b {
+		t.Error("validation should not be passed")
+	}
 }