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package refname
import "strings"
// Validate checks whether name is one valid Git refname.
func Validate(name string, options Options) error {
return validate(name, options.flags())
}
func validate(name string, flags int) error {
return checkOrSanitizeRefname(name, flags, nil)
}
func checkOrSanitizeRefname(name string, flags int, sanitized *strings.Builder) error {
componentCount := 0
remaining := name
if name == "@" {
if sanitized == nil {
return &NameError{Name: name, Reason: "single @ is not allowed"}
}
sanitized.WriteByte('-')
}
for {
if sanitized != nil && sanitized.Len() > 0 {
sanitized.WriteByte('/')
}
componentLen, err := checkRefnameComponent(remaining, &flags, sanitized, name)
switch {
case sanitized != nil && componentLen == 0:
case componentLen <= 0:
if err != nil {
return err
}
return &NameError{Name: name, Reason: "component has zero length"}
case err != nil:
return err
}
componentCount++
if componentLen == len(remaining) {
break
}
remaining = remaining[componentLen+1:]
}
componentLen := len(remaining)
if componentLen > 0 && remaining[componentLen-1] == '.' {
if sanitized == nil {
return &NameError{Name: name, Reason: "name ends with '.'"}
}
}
if flags&refnameAllowOneLevel == 0 && componentCount < 2 {
return &NameError{Name: name, Reason: "one-level refname is not allowed"}
}
return nil
}
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