feat: initial commit

internal/http/form/match_regexp.go

@@ -0,0 +1,27 @@
+package form
+
+import (
+	"regexp"
+
+	"github.com/pkg/errors"
+)
+
+func MatchRegExp(pattern string, message string) func(f *Field) error {
+	return func(f *Field) error {
+		value, err := FieldAttr[string](f, "value")
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		matches, err := regexp.MatchString(pattern, value)
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		if !matches {
+			return NewValidationError(message)
+		}
+
+		return nil
+	}
+}