30 lines
636 B
Go
30 lines
636 B
Go
package tags
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import (
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"fmt"
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"github.com/docker/distribution/registry/api/v2"
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)
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const DEFAULTTAG = "latest"
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type ErrTagInvalidFormat struct {
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name string
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}
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func (e ErrTagInvalidFormat) Error() string {
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return fmt.Sprintf("Illegal tag name (%s): only [A-Za-z0-9_.-] are allowed ('.' and '-' are NOT allowed in the initial), minimum 1, maximum 128 in length", e.name)
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}
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// ValidateTagName validates the name of a tag
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func ValidateTagName(name string) error {
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if name == "" {
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return fmt.Errorf("tag name can't be empty")
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}
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if !v2.TagNameAnchoredRegexp.MatchString(name) {
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return ErrTagInvalidFormat{name}
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}
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return nil
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}
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