29 lines
656 B
Go
29 lines
656 B
Go
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package fs
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import (
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"fmt"
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"os"
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"path"
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)
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// CachePath returns a cache directory name based on the base path, file hash and cache namespace.
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func CachePath(basePath, fileHash, namespace string, create bool) (cachePath string, err error) {
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if len(fileHash) < 4 {
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return "", fmt.Errorf("cache: hash '%s' is too short", fileHash)
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}
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if namespace == "" {
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return "", fmt.Errorf("cache: namespace for hash '%s' is empty", fileHash)
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}
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cachePath = path.Join(basePath, namespace, fileHash[0:1], fileHash[1:2], fileHash[2:3])
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if create {
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if err := os.MkdirAll(cachePath, os.ModePerm); err != nil {
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return "", err
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}
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}
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return cachePath, nil
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}
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