52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
package model
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// attribute bit. priority black > following > whisper > no relation.
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const (
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AttrNoRelation = uint32(0)
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AttrWhisper = uint32(1)
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AttrFollowing = uint32(1) << 1
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AttrFriend = uint32(1) << 2
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AttrBlack = uint32(1) << 7
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// 128，129,130 变为 0 时候，status = 1
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StatusOK = 0
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StatusDel = 1
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)
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// relation act type.
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const (
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ActAddFollowing = int8(1)
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ActDelFollowing = int8(2)
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ActAddWhisper = int8(3)
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ActDelWhisper = int8(4)
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ActAddBlack = int8(5)
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ActDelBalck = int8(6)
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ActDelFollower = int8(7)
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)
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// Attr get real attribute by the specified priority.
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func Attr(attribute uint32) uint32 {
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if attribute&AttrBlack > 0 {
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return AttrBlack
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}
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if attribute&AttrFriend > 0 {
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return AttrFriend
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}
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if attribute&AttrFollowing > 0 {
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return AttrFollowing
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}
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if attribute&AttrWhisper > 0 {
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return AttrWhisper
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}
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return AttrNoRelation
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}
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// SetAttr set attribute.
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func SetAttr(attribute uint32, mask uint32) uint32 {
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return attribute | mask
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}
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// UnsetAttr unset attribute.
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func UnsetAttr(attribute uint32, mask uint32) uint32 {
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return attribute & ^mask // ^ 按位取反
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}
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