/
util.go
62 lines (54 loc) · 1.36 KB
/
util.go
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// Copyright 2018 Paul Greenberg (greenpau@outlook.com)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package db
import (
"os/user"
"sort"
"strings"
)
type stringFloatMap struct {
m map[string]float64
s []string
}
func (sfm *stringFloatMap) Len() int {
return len(sfm.m)
}
func (sfm *stringFloatMap) Less(i, j int) bool {
return sfm.m[sfm.s[i]] > sfm.m[sfm.s[j]]
}
func (sfm *stringFloatMap) Swap(i, j int) {
sfm.s[i], sfm.s[j] = sfm.s[j], sfm.s[i]
}
func sortStringFloatMap(m map[string]float64) []string {
sfm := new(stringFloatMap)
sfm.m = m
sfm.s = make([]string, len(m))
i := 0
for k := range m {
sfm.s[i] = k
i++
}
sort.Sort(sfm)
return sfm.s
}
func expandFilePath(s string) string {
if strings.HasPrefix(s, "~/") {
usr, err := user.Current()
if err != nil {
return s
}
s = strings.Replace(s, "~", usr.HomeDir, 1)
}
return s
}