github.com/xuyutom/docker@v1.6.0/pkg/graphdb/sort.go (about)

     1  package graphdb
     2  
     3  import "sort"
     4  
     5  type pathSorter struct {
     6  	paths []string
     7  	by    func(i, j string) bool
     8  }
     9  
    10  func sortByDepth(paths []string) {
    11  	s := &pathSorter{paths, func(i, j string) bool {
    12  		return PathDepth(i) > PathDepth(j)
    13  	}}
    14  	sort.Sort(s)
    15  }
    16  
    17  func (s *pathSorter) Len() int {
    18  	return len(s.paths)
    19  }
    20  
    21  func (s *pathSorter) Swap(i, j int) {
    22  	s.paths[i], s.paths[j] = s.paths[j], s.paths[i]
    23  }
    24  
    25  func (s *pathSorter) Less(i, j int) bool {
    26  	return s.by(s.paths[i], s.paths[j])
    27  }