/usr/share/gocode/src/github.com/coreos/go-semver/semver/semver.go is in golang-go-semver-dev 0.0~git20150304-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 | package semver
import (
"bytes"
"errors"
"fmt"
"strconv"
"strings"
)
type Version struct {
Major int64
Minor int64
Patch int64
PreRelease PreRelease
Metadata string
}
type PreRelease string
func splitOff(input *string, delim string) (val string) {
parts := strings.SplitN(*input, delim, 2)
if len(parts) == 2 {
*input = parts[0]
val = parts[1]
}
return val
}
func NewVersion(version string) (*Version, error) {
v := Version{}
dotParts := strings.SplitN(version, ".", 3)
if len(dotParts) != 3 {
return nil, errors.New(fmt.Sprintf("%s is not in dotted-tri format", version))
}
v.Metadata = splitOff(&dotParts[2], "+")
v.PreRelease = PreRelease(splitOff(&dotParts[2], "-"))
parsed := make([]int64, 3, 3)
for i, v := range dotParts[:3] {
val, err := strconv.ParseInt(v, 10, 64)
parsed[i] = val
if err != nil {
return nil, err
}
}
v.Major = parsed[0]
v.Minor = parsed[1]
v.Patch = parsed[2]
return &v, nil
}
func Must(v *Version, err error) *Version {
if err != nil {
panic(err)
}
return v
}
func (v *Version) String() string {
var buffer bytes.Buffer
base := fmt.Sprintf("%d.%d.%d", v.Major, v.Minor, v.Patch)
buffer.WriteString(base)
if v.PreRelease != "" {
buffer.WriteString(fmt.Sprintf("-%s", v.PreRelease))
}
if v.Metadata != "" {
buffer.WriteString(fmt.Sprintf("+%s", v.Metadata))
}
return buffer.String()
}
func (v *Version) LessThan(versionB Version) bool {
versionA := *v
cmp := recursiveCompare(versionA.Slice(), versionB.Slice())
if cmp == 0 {
cmp = preReleaseCompare(versionA, versionB)
}
if cmp == -1 {
return true
}
return false
}
/* Slice converts the comparable parts of the semver into a slice of strings */
func (v *Version) Slice() []int64 {
return []int64{v.Major, v.Minor, v.Patch}
}
func (p *PreRelease) Slice() []string {
preRelease := string(*p)
return strings.Split(preRelease, ".")
}
func preReleaseCompare(versionA Version, versionB Version) int {
a := versionA.PreRelease
b := versionB.PreRelease
/* Handle the case where if two versions are otherwise equal it is the
* one without a PreRelease that is greater */
if len(a) == 0 && (len(b) > 0) {
return 1
} else if len(b) == 0 && (len(a) > 0) {
return -1
}
// If there is a prelease, check and compare each part.
return recursivePreReleaseCompare(a.Slice(), b.Slice())
}
func recursiveCompare(versionA []int64, versionB []int64) int {
if len(versionA) == 0 {
return 0
}
a := versionA[0]
b := versionB[0]
if a > b {
return 1
} else if a < b {
return -1
}
return recursiveCompare(versionA[1:], versionB[1:])
}
func recursivePreReleaseCompare(versionA []string, versionB []string) int {
// Handle slice length disparity.
if len(versionA) == 0 {
// Nothing to compare too, so we return 0
return 0
} else if len(versionB) == 0 {
// We're longer than versionB so return 1.
return 1
}
a := versionA[0]
b := versionB[0]
aInt := false; bInt := false
aI, err := strconv.Atoi(versionA[0])
if err == nil {
aInt = true
}
bI, err := strconv.Atoi(versionB[0])
if err == nil {
bInt = true
}
// Handle Integer Comparison
if aInt && bInt {
if aI > bI {
return 1
} else if aI < bI {
return -1
}
}
// Handle String Comparison
if a > b {
return 1
} else if a < b {
return -1
}
return recursivePreReleaseCompare(versionA[1:], versionB[1:])
}
// BumpMajor increments the Major field by 1 and resets all other fields to their default values
func (v *Version) BumpMajor() {
v.Major += 1
v.Minor = 0
v.Patch = 0
v.PreRelease = PreRelease("")
v.Metadata = ""
}
// BumpMinor increments the Minor field by 1 and resets all other fields to their default values
func (v *Version) BumpMinor() {
v.Minor += 1
v.Patch = 0
v.PreRelease = PreRelease("")
v.Metadata = ""
}
// BumpPatch increments the Patch field by 1 and resets all other fields to their default values
func (v *Version) BumpPatch() {
v.Patch += 1
v.PreRelease = PreRelease("")
v.Metadata = ""
}
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