dirmap.go raw

   1  // Copyright © 2015 Steve Francia <spf@spf13.com>.
   2  //
   3  // Licensed under the Apache License, Version 2.0 (the "License");
   4  // you may not use this file except in compliance with the License.
   5  // You may obtain a copy of the License at
   6  // http://www.apache.org/licenses/LICENSE-2.0
   7  //
   8  // Unless required by applicable law or agreed to in writing, software
   9  // distributed under the License is distributed on an "AS IS" BASIS,
  10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  11  // See the License for the specific language governing permissions and
  12  // limitations under the License.
  13  
  14  package mem
  15  
  16  import "sort"
  17  
  18  type DirMap map[string]*FileData
  19  
  20  func (m DirMap) Len() int           { return len(m) }
  21  func (m DirMap) Add(f *FileData)    { m[f.name] = f }
  22  func (m DirMap) Remove(f *FileData) { delete(m, f.name) }
  23  func (m DirMap) Files() (files []*FileData) {
  24  	for _, f := range m {
  25  		files = append(files, f)
  26  	}
  27  	sort.Sort(filesSorter(files))
  28  	return files
  29  }
  30  
  31  // implement sort.Interface for []*FileData
  32  type filesSorter []*FileData
  33  
  34  func (s filesSorter) Len() int           { return len(s) }
  35  func (s filesSorter) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
  36  func (s filesSorter) Less(i, j int) bool { return s[i].name < s[j].name }
  37  
  38  func (m DirMap) Names() (names []string) {
  39  	for x := range m {
  40  		names = append(names, x)
  41  	}
  42  	return names
  43  }
  44