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24 lines
506 B
Go
24 lines
506 B
Go
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package container
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import "strings"
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// ShortID returns the 12-character (hex) short version of an image ID hash, removing any "sha256:" prefix if present
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func ShortID(imageID string) (short string) {
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prefixSep := strings.IndexRune(imageID, ':')
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offset := 0
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length := 12
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if prefixSep >= 0 {
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if imageID[0:prefixSep] == "sha256" {
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offset = prefixSep + 1
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} else {
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length += prefixSep + 1
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}
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}
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if len(imageID) >= offset+length {
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return imageID[offset : offset+length]
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}
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return imageID
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}
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