42 lines
789 B
Go
42 lines
789 B
Go
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package lfs
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import (
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"fmt"
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"sort"
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)
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// An Extension describes how to manipulate files during smudge and clean.
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type Extension struct {
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Name string
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Clean string
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Smudge string
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Priority int
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}
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// SortExtensions sorts a map of extensions in ascending order by Priority
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func SortExtensions(m map[string]Extension) ([]Extension, error) {
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pMap := make(map[int]Extension)
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for n, ext := range m {
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p := ext.Priority
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if _, exist := pMap[p]; exist {
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err := fmt.Errorf("duplicate priority %d on %s", p, n)
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return nil, err
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}
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pMap[p] = ext
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}
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var priorities []int
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for p := range pMap {
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priorities = append(priorities, p)
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}
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sort.Ints(priorities)
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var result []Extension
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for _, p := range priorities {
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result = append(result, pMap[p])
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}
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return result, nil
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}
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