zrepl/pruning/keep_regex.go

34 lines
563 B
Go
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package pruning
import (
"regexp"
)
type KeepRegex struct {
expr *regexp.Regexp
}
var _ KeepRule = &KeepRegex{}
func NewKeepRegex(expr string) (*KeepRegex, error) {
re, err := regexp.Compile(expr)
if err != nil {
return nil, err
}
return &KeepRegex{re}, nil
}
func MustKeepRegex(expr string) *KeepRegex {
k, err := NewKeepRegex(expr)
if err != nil {
panic(err)
}
return k
}
func (k *KeepRegex) KeepRule(snaps []Snapshot) []Snapshot {
return filterSnapList(snaps, func(s Snapshot) bool {
return k.expr.FindStringIndex(s.Name()) == nil
})
}