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package v4
import (
sdkstrings "github.com/aws/aws-sdk-go-v2/internal/strings"
)
// Rules 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 include listing
type AllowList struct {
Rule
}
// IsValid for AllowList checks if the value is within the AllowList
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 AllowList checks if the value is within the AllowList
func (b ExcludeList) IsValid(value string) bool {
return !b.Rule.IsValid(value)
}
// Patterns is a list of strings to match against
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 sdkstrings.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
}
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