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34 lines
832 B
Go
34 lines
832 B
Go
package property
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import (
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"fmt"
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"regexp"
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)
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type Property string
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// Check property name conforms to zfsprops(8), section "User Properties"
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// Keep regex and error message in sync!
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var (
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propertyValidNameChars = regexp.MustCompile(`^[0-9a-zA-Z-_\.:]+$`)
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propertyValidNameCharsErr = fmt.Errorf("property name must only contain alphanumeric chars and any in %q", "-_.:")
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)
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func (p Property) Validate() error {
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const PROPERTYNAMEMAXLEN int = 256
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if len(p) < 1 {
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return fmt.Errorf("property name cannot be empty")
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}
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if len(p) > PROPERTYNAMEMAXLEN {
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return fmt.Errorf("property name longer than %d characters", PROPERTYNAMEMAXLEN)
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}
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if p[0] == '-' {
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return fmt.Errorf("property name cannot start with '-'")
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}
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if !propertyValidNameChars.MatchString(string(p)) {
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return propertyValidNameCharsErr
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}
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return nil
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}
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