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| 1 | +// |
| 2 | +// DISCLAIMER |
| 3 | +// |
| 4 | +// Copyright 2016-2022 ArangoDB GmbH, Cologne, Germany |
| 5 | +// |
| 6 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | +// you may not use this file except in compliance with the License. |
| 8 | +// You may obtain a copy of the License at |
| 9 | +// |
| 10 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | +// |
| 12 | +// Unless required by applicable law or agreed to in writing, software |
| 13 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | +// See the License for the specific language governing permissions and |
| 16 | +// limitations under the License. |
| 17 | +// |
| 18 | +// Copyright holder is ArangoDB GmbH, Cologne, Germany |
| 19 | +// |
| 20 | + |
| 21 | +package v1 |
| 22 | + |
| 23 | +import ( |
| 24 | + "encoding/json" |
| 25 | + "fmt" |
| 26 | + "strconv" |
| 27 | + "strings" |
| 28 | + |
| 29 | + "github.com/pkg/errors" |
| 30 | +) |
| 31 | + |
| 32 | +var _ json.Marshaler = Version{} |
| 33 | +var _ json.Unmarshaler = &Version{} |
| 34 | + |
| 35 | +type Version struct { |
| 36 | + Major int `json:"major"` |
| 37 | + Minor int `json:"minor"` |
| 38 | + Patch int `json:"patch"` |
| 39 | + ID int `json:"ID,omitempty"` |
| 40 | +} |
| 41 | + |
| 42 | +func (v Version) Compare(b Version) int { |
| 43 | + if v.Major > b.Major { |
| 44 | + return 1 |
| 45 | + } else if v.Major < b.Major { |
| 46 | + return -1 |
| 47 | + } |
| 48 | + |
| 49 | + if v.Minor > b.Minor { |
| 50 | + return 1 |
| 51 | + } else if v.Minor < b.Minor { |
| 52 | + return -1 |
| 53 | + } |
| 54 | + |
| 55 | + if v.Patch > b.Patch { |
| 56 | + return 1 |
| 57 | + } else if v.Patch < b.Patch { |
| 58 | + return -1 |
| 59 | + } |
| 60 | + |
| 61 | + if v.ID < b.ID { |
| 62 | + return 1 |
| 63 | + } else if b.ID < v.ID { |
| 64 | + return -1 |
| 65 | + } |
| 66 | + |
| 67 | + return 0 |
| 68 | +} |
| 69 | + |
| 70 | +func (v *Version) Equal(b *Version) bool { |
| 71 | + if v == nil && b == nil { |
| 72 | + return true |
| 73 | + } |
| 74 | + if v == nil || b == nil { |
| 75 | + return true |
| 76 | + } |
| 77 | + return v.Major == b.Major && v.Minor == b.Minor && v.Patch == b.Patch && v.ID == b.ID |
| 78 | +} |
| 79 | + |
| 80 | +func (v *Version) UnmarshalJSON(bytes []byte) error { |
| 81 | + if v == nil { |
| 82 | + return errors.Errorf("Nil version provided") |
| 83 | + } |
| 84 | + |
| 85 | + var s string |
| 86 | + |
| 87 | + if err := json.Unmarshal(bytes, &s); err != nil { |
| 88 | + *v = Version{ |
| 89 | + Major: 0, |
| 90 | + Minor: 0, |
| 91 | + Patch: 0, |
| 92 | + } |
| 93 | + return nil |
| 94 | + } |
| 95 | + |
| 96 | + z := strings.Split(s, ".") |
| 97 | + |
| 98 | + i := make([]int, len(z)) |
| 99 | + |
| 100 | + for id, z := range z { |
| 101 | + if q, err := strconv.Atoi(z); err != nil { |
| 102 | + *v = Version{ |
| 103 | + Major: 0, |
| 104 | + Minor: 0, |
| 105 | + Patch: 0, |
| 106 | + } |
| 107 | + return nil |
| 108 | + } else { |
| 109 | + i[id] = q |
| 110 | + } |
| 111 | + } |
| 112 | + switch l := len(i); l { |
| 113 | + case 1: |
| 114 | + var n Version |
| 115 | + |
| 116 | + n.Major = i[0] |
| 117 | + |
| 118 | + *v = n |
| 119 | + case 2: |
| 120 | + var n Version |
| 121 | + |
| 122 | + n.Major = i[0] |
| 123 | + n.Minor = i[1] |
| 124 | + |
| 125 | + *v = n |
| 126 | + case 3: |
| 127 | + var n Version |
| 128 | + |
| 129 | + n.Major = i[0] |
| 130 | + n.Minor = i[1] |
| 131 | + n.Patch = i[2] |
| 132 | + |
| 133 | + *v = n |
| 134 | + case 4: |
| 135 | + var n Version |
| 136 | + |
| 137 | + n.Major = i[0] |
| 138 | + n.Minor = i[1] |
| 139 | + n.Patch = i[2] |
| 140 | + n.ID = i[3] |
| 141 | + |
| 142 | + *v = n |
| 143 | + default: |
| 144 | + *v = Version{ |
| 145 | + Major: 0, |
| 146 | + Minor: 0, |
| 147 | + Patch: 0, |
| 148 | + } |
| 149 | + return nil |
| 150 | + } |
| 151 | + |
| 152 | + return nil |
| 153 | +} |
| 154 | + |
| 155 | +func (v Version) MarshalJSON() ([]byte, error) { |
| 156 | + if v.ID == 0 { |
| 157 | + return json.Marshal(fmt.Sprintf("%d.%d.%d", v.Major, v.Minor, v.Patch)) |
| 158 | + } |
| 159 | + |
| 160 | + return json.Marshal(fmt.Sprintf("%d.%d.%d.%d", v.Major, v.Minor, v.Patch, v.ID)) |
| 161 | +} |
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