82 lines
1.8 KiB
Go
82 lines
1.8 KiB
Go
package v4
|
|
|
|
import (
|
|
"github.com/aws/aws-sdk-go/internal/strings"
|
|
)
|
|
|
|
// validator houses a set of rule needed for validation of a
|
|
// string value
|
|
type rules []rule
|
|
|
|
// rule interface allows for more flexible rules and just simply
|
|
// checks whether or not a value adheres to that rule
|
|
type rule interface {
|
|
IsValid(value string) bool
|
|
}
|
|
|
|
// IsValid will iterate through all rules and see if any rules
|
|
// apply to the value and supports nested rules
|
|
func (r rules) IsValid(value string) bool {
|
|
for _, rule := range r {
|
|
if rule.IsValid(value) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// mapRule generic rule for maps
|
|
type mapRule map[string]struct{}
|
|
|
|
// IsValid for the map rule satisfies whether it exists in the map
|
|
func (m mapRule) IsValid(value string) bool {
|
|
_, ok := m[value]
|
|
return ok
|
|
}
|
|
|
|
// allowList is a generic rule for allow listing
|
|
type allowList struct {
|
|
rule
|
|
}
|
|
|
|
// IsValid for allow list checks if the value is within the allow list
|
|
func (w allowList) IsValid(value string) bool {
|
|
return w.rule.IsValid(value)
|
|
}
|
|
|
|
// excludeList is a generic rule for exclude listing
|
|
type excludeList struct {
|
|
rule
|
|
}
|
|
|
|
// IsValid for exclude list checks if the value is within the exclude list
|
|
func (b excludeList) IsValid(value string) bool {
|
|
return !b.rule.IsValid(value)
|
|
}
|
|
|
|
type patterns []string
|
|
|
|
// IsValid for patterns checks each pattern and returns if a match has
|
|
// been found
|
|
func (p patterns) IsValid(value string) bool {
|
|
for _, pattern := range p {
|
|
if strings.HasPrefixFold(value, pattern) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// inclusiveRules rules allow for rules to depend on one another
|
|
type inclusiveRules []rule
|
|
|
|
// IsValid will return true if all rules are true
|
|
func (r inclusiveRules) IsValid(value string) bool {
|
|
for _, rule := range r {
|
|
if !rule.IsValid(value) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|