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package parse
import (
"regexp"
"sync"
"git.sr.ht/~rjarry/aerc/log"
)
var reCache sync.Map
// Check if a string matches the specified regular expression.
// The regexp is compiled only once and stored in a cache for future use.
func MatchCache(s, expr string) bool {
var re interface{}
var found bool
if re, found = reCache.Load(expr); !found {
var err error
re, err = regexp.Compile(expr)
if err != nil {
log.Errorf("`%s` invalid regexp: %s", expr, err)
}
reCache.Store(expr, re)
}
if re, ok := re.(*regexp.Regexp); ok && re != nil {
return re.MatchString(s)
}
return false
}
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