syncthing/lib/ignore/cache.go

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// Copyright (C) 2014 The Syncthing Authors.
//
2015-03-07 20:36:35 +00:00
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
package ignore
import "time"
type cache struct {
patterns []Pattern
entries map[string]cacheEntry
}
type cacheEntry struct {
value bool
access time.Time
}
func newCache(patterns []Pattern) *cache {
return &cache{
patterns: patterns,
entries: make(map[string]cacheEntry),
}
}
func (c *cache) clean(d time.Duration) {
for k, v := range c.entries {
if time.Since(v.access) > d {
delete(c.entries, k)
}
}
}
func (c *cache) get(key string) (result, ok bool) {
res, ok := c.entries[key]
if ok {
res.access = time.Now()
c.entries[key] = res
}
return res.value, ok
}
func (c *cache) set(key string, val bool) {
c.entries[key] = cacheEntry{val, time.Now()}
}
func (c *cache) len() int {
l := len(c.entries)
return l
}