mirror of
https://github.com/strongdm/comply
synced 2024-11-17 05:14:55 +00:00
133 lines
3.3 KiB
Markdown
133 lines
3.3 KiB
Markdown
semver for golang [](https://drone.io/github.com/blang/semver/latest) [](https://godoc.org/github.com/blang/semver) [](https://coveralls.io/r/blang/semver?branch=master)
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======
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semver is a [Semantic Versioning](http://semver.org/) library written in golang. It fully covers spec version `2.0.0`.
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Usage
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-----
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```bash
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$ go get github.com/blang/semver
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```
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```go
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import github.com/blang/semver
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v1, err := semver.New("1.0.0-beta")
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v2, err := semver.New("2.0.0-beta")
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v1.Compare(v2)
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```
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Also check the [GoDocs](http://godoc.org/github.com/blang/semver).
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Why should I use this lib?
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-----
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- Fully spec compatible
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- No reflection
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- No regex
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- Fully tested (Coverage >99%)
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- Readable parsing/validation errors
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- Fast (See [Benchmarks](#benchmarks))
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- Only Stdlib
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Features
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-----
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- Parsing and validation at all levels
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- Comparator-like comparisons
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- Compare Helper Methods
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- InPlace manipulation
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- database/sql compatible (sql.Scanner/Valuer)
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Example
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-----
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Have a look at full examples in [examples/main.go](examples/main.go)
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```go
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import github.com/blang/semver
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v, err := semver.New("0.0.1-alpha.preview+123.github")
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fmt.Printf("Major: %d\n", v.Major)
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fmt.Printf("Minor: %d\n", v.Minor)
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fmt.Printf("Patch: %d\n", v.Patch)
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fmt.Printf("Pre: %s\n", v.Pre)
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fmt.Printf("Build: %s\n", v.Build)
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// Prerelease versions array
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if len(v.Pre) > 0 {
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fmt.Println("Prerelease versions:")
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for i, pre := range v.Pre {
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fmt.Printf("%d: %q\n", i, pre)
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}
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}
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// Build meta data array
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if len(v.Build) > 0 {
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fmt.Println("Build meta data:")
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for i, build := range v.Build {
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fmt.Printf("%d: %q\n", i, build)
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}
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}
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v001, err := semver.New("0.0.1")
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// Compare using helpers: v.GT(v2), v.LT, v.GTE, v.LTE
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v001.GT(v) == true
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v.LT(v001) == true
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v.GTE(v) == true
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v.LTE(v) == true
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// Or use v.Compare(v2) for comparisons (-1, 0, 1):
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v001.Compare(v) == 1
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v.Compare(v001) == -1
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v.Compare(v) == 0
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// Manipulate Version in place:
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v.Pre[0], err = semver.NewPRVersion("beta")
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if err != nil {
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fmt.Printf("Error parsing pre release version: %q", err)
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}
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fmt.Println("\nValidate versions:")
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v.Build[0] = "?"
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err = v.Validate()
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if err != nil {
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fmt.Printf("Validation failed: %s\n", err)
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}
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```
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Benchmarks
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-----
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BenchmarkParseSimple 5000000 442 ns/op
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BenchmarkParseComplex 1000000 2441 ns/op
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BenchmarkParseAverage 1000000 1497 ns/op
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BenchmarkValidateSimple 500000000 4.83 ns/op
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BenchmarkValidateComplex 1000000 1236 ns/op
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BenchmarkValidateAverage 5000000 580 ns/op
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BenchmarkCompareSimple 500000000 5.43 ns/op
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BenchmarkCompareComplex 100000000 26.3 ns/op
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BenchmarkCompareAverage 100000000 29.6 ns/op
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See benchmark cases at [semver_test.go](semver_test.go)
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Motivation
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-----
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I simply couldn't find any lib supporting the full spec. Others were just wrong or used reflection and regex which i don't like.
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Contribution
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-----
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Feel free to make a pull request. For bigger changes create a issue first to discuss about it.
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License
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-----
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See [LICENSE](LICENSE) file.
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