podman

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// Copyright © 2015 Steve Francia <spf@spf13.com>.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package mem
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import "sort"
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type DirMap map[string]*FileData
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func (m DirMap) Len() int           { return len(m) }
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func (m DirMap) Add(f *FileData)    { m[f.name] = f }
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func (m DirMap) Remove(f *FileData) { delete(m, f.name) }
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func (m DirMap) Files() (files []*FileData) {
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	for _, f := range m {
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		files = append(files, f)
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	}
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	sort.Sort(filesSorter(files))
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	return files
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}
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// implement sort.Interface for []*FileData
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type filesSorter []*FileData
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func (s filesSorter) Len() int           { return len(s) }
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func (s filesSorter) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
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func (s filesSorter) Less(i, j int) bool { return s[i].name < s[j].name }
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func (m DirMap) Names() (names []string) {
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	for x := range m {
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		names = append(names, x)
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	}
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	return names
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}
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