rclone/fs/accounting/stringset.go

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package accounting
import (
"sort"
"strings"
"sync"
)
// stringSet holds a set of strings
type stringSet struct {
mu sync.RWMutex
items map[string]struct{}
}
// newStringSet creates a new empty string set of capacity size
func newStringSet(size int) *stringSet {
return &stringSet{
items: make(map[string]struct{}, size),
}
}
// add adds remote to the set
func (ss *stringSet) add(remote string) {
ss.mu.Lock()
ss.items[remote] = struct{}{}
ss.mu.Unlock()
}
// del removes remote from the set
func (ss *stringSet) del(remote string) {
ss.mu.Lock()
delete(ss.items, remote)
ss.mu.Unlock()
}
// empty returns whether the set has any items
func (ss *stringSet) empty() bool {
ss.mu.RLock()
defer ss.mu.RUnlock()
return len(ss.items) == 0
}
// Strings returns all the strings in the stringSet
func (ss *stringSet) Strings() []string {
ss.mu.RLock()
defer ss.mu.RUnlock()
strings := make([]string, 0, len(ss.items))
for name := range ss.items {
var out string
if acc := Stats.inProgress.get(name); acc != nil {
out = acc.String()
} else {
out = name
}
strings = append(strings, " * "+out)
}
sorted := sort.StringSlice(strings)
sorted.Sort()
return sorted
}
// String returns all the file names in the stringSet joined by newline
func (ss *stringSet) String() string {
return strings.Join(ss.Strings(), "\n")
}