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package config
import (
"errors"
"sort"
"github.com/git-lfs/git-lfs/v3/tr"
)
// An Extension describes how to manipulate files during smudge and clean.
// Extensions are parsed from the Git config.
type Extension struct {
Name string
Clean string
Smudge string
Priority int
}
// SortExtensions sorts a map of extensions in ascending order by Priority
func SortExtensions(m map[string]Extension) ([]Extension, error) {
pMap := make(map[int]Extension)
priorities := make([]int, 0, len(m))
for n, ext := range m {
p := ext.Priority
if _, exist := pMap[p]; exist {
err := errors.New(tr.Tr.Get("duplicate priority %d on %s", p, n))
return nil, err
}
pMap[p] = ext
priorities = append(priorities, p)
}
sort.Ints(priorities)
result := make([]Extension, len(priorities))
for i, p := range priorities {
result[i] = pMap[p]
}
return result, nil
}
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