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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package apiversion | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "regexp" | ||
| "strconv" | ||
| ) | ||
|
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| // MajorVersion is the current major API Version. | ||
| const MajorVersion = 2 | ||
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| // MinorVersion is the current minor API Version. | ||
| const MinorVersion = 1 | ||
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| // APIVersion is the current API Version. | ||
| var APIVersion = Format(MajorVersion, MinorVersion) | ||
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| // SupportedVersions is a slice of supported versions. | ||
| var SupportedVersions []string | ||
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| // SupportedVersionsJSON is an JSON array of supported versions. | ||
| var SupportedVersionsJSON string | ||
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| var regexpAPIVersion = regexp.MustCompile(`^v(\d+)\.(\d+)$`) | ||
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| func init() { | ||
| for i := 0; i <= MinorVersion; i++ { | ||
| SupportedVersions = append(SupportedVersions, Format(MajorVersion, i)) | ||
| } | ||
| bytes, err := json.Marshal(SupportedVersions) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| SupportedVersionsJSON = string(bytes) | ||
| } | ||
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| // Format formats major and minor into `v<major>.<minor>`. | ||
| func Format(major, minor int) string { | ||
| return fmt.Sprintf("v%d.%d", major, minor) | ||
| } | ||
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| // Parse parses API version into major and minor. | ||
| func Parse(apiVersion string) (major int, minor int, ok bool) { | ||
| output := regexpAPIVersion.FindAllStringSubmatch(apiVersion, -1) | ||
| if len(output) <= 0 { | ||
| return | ||
| } | ||
| major, _ = strconv.Atoi(output[0][1]) | ||
| minor, _ = strconv.Atoi(output[0][2]) | ||
| ok = true | ||
| return | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| package apiversion | ||
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|
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| import ( | ||
| "testing" | ||
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|
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| . "github.com/smartystreets/goconvey/convey" | ||
| ) | ||
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| func TestFormat(t *testing.T) { | ||
| Convey("Format", t, func() { | ||
| So(Format(1, 2), ShouldEqual, "v1.2") | ||
| }) | ||
| } | ||
|
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| func TestParse(t *testing.T) { | ||
| Convey("Parse", t, func() { | ||
| var major, minor int | ||
| var ok bool | ||
|
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| major, minor, ok = Parse("v1.2") | ||
| So(ok, ShouldBeTrue) | ||
| So(major, ShouldEqual, 1) | ||
| So(minor, ShouldEqual, 2) | ||
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| _, _, ok = Parse("v1.2 ") | ||
| So(ok, ShouldBeFalse) | ||
| }) | ||
| } |
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