| | 1 | + | package utils |
| | 2 | + | |
| | 3 | + | import ( |
| | 4 | + | "log" |
| | 5 | + | "strconv" |
| | 6 | + | "strings" |
| | 7 | + | ) |
| | 8 | + | |
| | 9 | + | // reference : https://github.com/michelia/uversion/blob/a1caf6fb6aad0a4e92b2c51e097f33518e2ff8da/version_compare.go |
| | 10 | + | |
| | 11 | + | // vCompareSlice operator为 < <= > >= = == |
| | 12 | + | func vCompareSlice(v1s []string, operator string, v2s []string) bool { |
| | 13 | + | switch operator { |
| | 14 | + | case "<", "<=", ">", ">=", "==": |
| | 15 | + | default: |
| | 16 | + | log.Print("不合法的比较符") |
| | 17 | + | return false |
| | 18 | + | } |
| | 19 | + | l := len(v1s) |
| | 20 | + | switch { |
| | 21 | + | case len(v1s) > len(v2s): |
| | 22 | + | l = len(v1s) |
| | 23 | + | diff := len(v1s) - len(v2s) |
| | 24 | + | for i := 0; i < diff; i++ { |
| | 25 | + | v2s = append(v2s, "0") |
| | 26 | + | } |
| | 27 | + | case len(v1s) < len(v2s): |
| | 28 | + | l = len(v2s) |
| | 29 | + | diff := len(v2s) - len(v1s) |
| | 30 | + | for i := 0; i < diff; i++ { |
| | 31 | + | v1s = append(v1s, "0") |
| | 32 | + | } |
| | 33 | + | } |
| | 34 | + | switch operator { |
| | 35 | + | case "==": |
| | 36 | + | if strings.Join(v1s, ".") == strings.Join(v2s, ".") { |
| | 37 | + | return true |
| | 38 | + | } else { |
| | 39 | + | return false |
| | 40 | + | } |
| | 41 | + | case ">=", "<=": |
| | 42 | + | operator = string(operator[0]) // 只取 < 或 > |
| | 43 | + | // 因为 operator 包含 = |
| | 44 | + | if strings.Join(v1s, ".") == strings.Join(v2s, ".") { |
| | 45 | + | return true |
| | 46 | + | } |
| | 47 | + | } |
| | 48 | + | |
| | 49 | + | for i := 0; i < l; i++ { |
| | 50 | + | fs := false // fs flag string 表示是字符, 不能转化为int |
| | 51 | + | n1, err := strconv.Atoi(v1s[i]) |
| | 52 | + | if err != nil { |
| | 53 | + | fs = true |
| | 54 | + | } |
| | 55 | + | n2, err := strconv.Atoi(v2s[i]) |
| | 56 | + | if err != nil { |
| | 57 | + | fs = true |
| | 58 | + | } |
| | 59 | + | switch operator { |
| | 60 | + | case "<": |
| | 61 | + | if fs { |
| | 62 | + | switch { |
| | 63 | + | case v1s[i] == v2s[i]: |
| | 64 | + | continue |
| | 65 | + | case v1s[i] < v2s[i]: |
| | 66 | + | return true |
| | 67 | + | case v1s[i] > v2s[i]: |
| | 68 | + | return false |
| | 69 | + | } |
| | 70 | + | } else { |
| | 71 | + | switch { |
| | 72 | + | case n1 == n2: |
| | 73 | + | continue |
| | 74 | + | case n1 < n2: |
| | 75 | + | return true |
| | 76 | + | case n1 > n2: |
| | 77 | + | return false |
| | 78 | + | } |
| | 79 | + | } |
| | 80 | + | case ">": |
| | 81 | + | if fs { |
| | 82 | + | switch { |
| | 83 | + | case v1s[i] == v2s[i]: |
| | 84 | + | continue |
| | 85 | + | case v1s[i] > v2s[i]: |
| | 86 | + | return true |
| | 87 | + | case v1s[i] < v2s[i]: |
| | 88 | + | return false |
| | 89 | + | } |
| | 90 | + | } else { |
| | 91 | + | switch { |
| | 92 | + | case n1 == n2: |
| | 93 | + | continue |
| | 94 | + | case n1 > n2: |
| | 95 | + | return true |
| | 96 | + | case n1 < n2: |
| | 97 | + | return false |
| | 98 | + | } |
| | 99 | + | } |
| | 100 | + | } |
| | 101 | + | } |
| | 102 | + | return false |
| | 103 | + | } |
| | 104 | + | |
| | 105 | + | // Compare operator为 < <= > >= == |
| | 106 | + | func Compare(v1, operator, v2 string) bool { |
| | 107 | + | v1s := strings.Split(v1, ".") |
| | 108 | + | v2s := strings.Split(v2, ".") |
| | 109 | + | return vCompareSlice(v1s, operator, v2s) |
| | 110 | + | } |
| | 111 | + | |
| | 112 | + | // Between operator为 < <= > >= == |
| | 113 | + | func Between(v1, o1, v, o2, v2 string) bool { |
| | 114 | + | v1s := strings.Split(v1, ".") |
| | 115 | + | vs := strings.Split(v, ".") |
| | 116 | + | v2s := strings.Split(v2, ".") |
| | 117 | + | if vCompareSlice(v1s, o1, vs) && vCompareSlice(vs, o2, v2s) { |
| | 118 | + | return true |
| | 119 | + | } |
| | 120 | + | return false |
| | 121 | + | } |
| | 122 | + | |
