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|
package refname
import "strings"
func checkRefnameComponent(name string, flags *int, sanitized *strings.Builder, fullName string) (int, error) {
var last byte
componentStart := sanitizedLen(sanitized)
for i := range len(name) {
ch := name[i]
disp := refnameDisposition(ch)
if sanitized != nil && disp != 1 {
sanitized.WriteByte(ch)
}
switch disp {
case 1:
goto out
case 2:
if last == '.' {
if sanitized != nil {
truncateBuilder(sanitized, sanitized.Len()-1)
} else {
return 0, &NameError{Name: fullName, Reason: "name contains '..'"}
}
}
case 3:
if last == '@' {
if sanitized != nil {
overwriteLastByte(sanitized, '-')
} else {
return 0, &NameError{Name: fullName, Reason: "name contains '@{'"}
}
}
case 4:
if sanitized != nil {
overwriteLastByte(sanitized, '-')
} else {
return 0, &NameError{Name: fullName, Reason: "name contains one forbidden character"}
}
case 5:
if *flags&refnameRefspecPattern == 0 {
if sanitized != nil {
overwriteLastByte(sanitized, '-')
} else {
return 0, &NameError{Name: fullName, Reason: "name contains '*'"}
}
}
*flags &^= refnameRefspecPattern
}
last = ch
}
out:
componentLen := strings.IndexByte(name, '/')
if componentLen < 0 {
componentLen = len(name)
}
if componentLen == 0 {
return 0, nil
}
if name[0] == '.' {
if sanitized != nil {
overwriteBuilderAt(sanitized, componentStart, '-')
} else {
return 0, &NameError{Name: fullName, Reason: "component starts with '.'"}
}
}
if componentLen >= len(lockSuffix) && name[componentLen-len(lockSuffix):componentLen] == lockSuffix {
if sanitized == nil {
return 0, &NameError{Name: fullName, Reason: "component ends with .lock"}
}
for strings.HasSuffix(sanitized.String(), lockSuffix) {
truncateBuilder(sanitized, sanitized.Len()-len(lockSuffix))
}
}
return componentLen, nil
}
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