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Signed-off-by: kaizhe <derek0405@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| package types | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "sort" | ||
| ) | ||
|
|
||
| type PortRangeList []*PortRange | ||
|
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| type PortRange struct { | ||
| Min int32 | ||
| Max int32 | ||
| } | ||
|
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||
| func NewPortRange(min, max int32) *PortRange { | ||
| return &PortRange{ | ||
| Min: min, | ||
| Max: max, | ||
| } | ||
| } | ||
|
|
||
| func (pl PortRangeList) Consolidate() PortRangeList { | ||
| newPortRangeList := PortRangeList{} | ||
|
|
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| max := pl.GetMax() | ||
|
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| min := pl.GetMin() | ||
|
|
||
| if min == -1 { | ||
| return newPortRangeList | ||
| } | ||
|
|
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| tmpPl := make(PortRangeList, max+1) | ||
|
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| for _, pr := range pl { | ||
| tmpPl[pr.Min] = pr | ||
| } | ||
|
|
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| pr := tmpPl[min] | ||
| i := min | ||
|
|
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| for ; i <= max; i++ { | ||
| if tmpPl[i] != nil { | ||
| pr.Max = tmpPl[i].Max | ||
| } else { | ||
| // there is a break | ||
| newPortRangeList = append(newPortRangeList, pr) | ||
|
|
||
| // look for next port range | ||
| for { | ||
| i++ | ||
| if i > max { | ||
| break | ||
| } | ||
|
|
||
| if tmpPl[i] != nil { | ||
| pr = tmpPl[i] | ||
| break | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| newPortRangeList = append(newPortRangeList, pr) | ||
|
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| sort.Sort(newPortRangeList) | ||
|
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| return newPortRangeList | ||
| } | ||
|
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| func (pl PortRangeList) GetMin() int32 { | ||
| min := int32(-1) | ||
|
|
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| for _, pr := range pl { | ||
| if pr != nil { | ||
| if min == int32(-1) { | ||
| min = pr.Min | ||
| } | ||
|
|
||
| if pr.Min < min { | ||
| min = pr.Min | ||
| } | ||
| } | ||
| } | ||
|
|
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| return min | ||
| } | ||
|
|
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| func (pl PortRangeList) GetMax() int32 { | ||
| max := int32(-1) | ||
|
|
||
| for _, pr := range pl { | ||
| if pr != nil { | ||
| if pr.Max > max { | ||
| max = pr.Max | ||
| } | ||
| } | ||
| } | ||
|
|
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| return max | ||
| } | ||
|
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| func (pl PortRangeList) String() string { | ||
| ret := "[" | ||
|
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| for idx, pr := range pl { | ||
| ret += fmt.Sprintf("{%d %d}", pr.Min, pr.Max) | ||
|
|
||
| if idx < len(pl)-1 { | ||
| ret += ", " | ||
| } | ||
| } | ||
|
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| ret += "]" | ||
|
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| return ret | ||
| } | ||
|
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| func (pl PortRangeList) Less(i, j int) bool { return pl[i].Min < pl[j].Min } | ||
|
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| func (pl PortRangeList) Len() int { return len(pl) } | ||
|
|
||
| func (pl PortRangeList) Swap(i, j int) { pl[j], pl[i] = pl[i], pl[j] } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| package types | ||
|
|
||
| import ( | ||
| "testing" | ||
| ) | ||
|
|
||
| var ( | ||
| prList = PortRangeList{ | ||
| &PortRange{Min: 1, Max: 1}, | ||
| &PortRange{Min: 2, Max: 2}, | ||
| &PortRange{Min: 3, Max: 3}, | ||
| &PortRange{Min: 5, Max: 5}, | ||
| &PortRange{Min: 6, Max: 6}, | ||
| &PortRange{Min: 7, Max: 7}, | ||
| &PortRange{Min: 50, Max: 50}, | ||
| &PortRange{Min: 99, Max: 99}, | ||
| } | ||
|
|
||
| expectedPrList = PortRangeList{ | ||
| &PortRange{Min: 1, Max: 3}, | ||
| &PortRange{Min: 5, Max: 7}, | ||
| &PortRange{Min: 50, Max: 50}, | ||
| &PortRange{Min: 99, Max: 99}, | ||
| } | ||
| ) | ||
|
|
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| func TestPortRange(t *testing.T) { | ||
| newPrList := prList.Consolidate() | ||
|
|
||
| if len(newPrList) != 4 { | ||
| t.Errorf("length is not 3: %+v", newPrList) | ||
| } | ||
|
|
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| for i := range expectedPrList { | ||
| if newPrList[i].Min != expectedPrList[i].Min || newPrList[i].Max != expectedPrList[i].Max { | ||
| t.Errorf("expected port range: %v; actual port range: %v", *expectedPrList[i], *newPrList[i]) | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| 1.7.0 | ||
| 1.8.0 |