mirror of
https://github.com/42wim/matterbridge.git
synced 2024-12-30 07:02:37 +01:00
195 lines
6.0 KiB
Markdown
195 lines
6.0 KiB
Markdown
semver for golang [](https://travis-ci.org/blang/semver) [](https://godoc.org/github.com/blang/semver) [](https://coveralls.io/r/blang/semver?branch=master)
|
|
======
|
|
|
|
semver is a [Semantic Versioning](http://semver.org/) library written in golang. It fully covers spec version `2.0.0`.
|
|
|
|
Usage
|
|
-----
|
|
```bash
|
|
$ go get github.com/blang/semver
|
|
```
|
|
Note: Always vendor your dependencies or fix on a specific version tag.
|
|
|
|
```go
|
|
import github.com/blang/semver
|
|
v1, err := semver.Make("1.0.0-beta")
|
|
v2, err := semver.Make("2.0.0-beta")
|
|
v1.Compare(v2)
|
|
```
|
|
|
|
Also check the [GoDocs](http://godoc.org/github.com/blang/semver).
|
|
|
|
Why should I use this lib?
|
|
-----
|
|
|
|
- Fully spec compatible
|
|
- No reflection
|
|
- No regex
|
|
- Fully tested (Coverage >99%)
|
|
- Readable parsing/validation errors
|
|
- Fast (See [Benchmarks](#benchmarks))
|
|
- Only Stdlib
|
|
- Uses values instead of pointers
|
|
- Many features, see below
|
|
|
|
|
|
Features
|
|
-----
|
|
|
|
- Parsing and validation at all levels
|
|
- Comparator-like comparisons
|
|
- Compare Helper Methods
|
|
- InPlace manipulation
|
|
- Ranges `>=1.0.0 <2.0.0 || >=3.0.0 !3.0.1-beta.1`
|
|
- Wildcards `>=1.x`, `<=2.5.x`
|
|
- Sortable (implements sort.Interface)
|
|
- database/sql compatible (sql.Scanner/Valuer)
|
|
- encoding/json compatible (json.Marshaler/Unmarshaler)
|
|
|
|
Ranges
|
|
------
|
|
|
|
A `Range` is a set of conditions which specify which versions satisfy the range.
|
|
|
|
A condition is composed of an operator and a version. The supported operators are:
|
|
|
|
- `<1.0.0` Less than `1.0.0`
|
|
- `<=1.0.0` Less than or equal to `1.0.0`
|
|
- `>1.0.0` Greater than `1.0.0`
|
|
- `>=1.0.0` Greater than or equal to `1.0.0`
|
|
- `1.0.0`, `=1.0.0`, `==1.0.0` Equal to `1.0.0`
|
|
- `!1.0.0`, `!=1.0.0` Not equal to `1.0.0`. Excludes version `1.0.0`.
|
|
|
|
Note that spaces between the operator and the version will be gracefully tolerated.
|
|
|
|
A `Range` can link multiple `Ranges` separated by space:
|
|
|
|
Ranges can be linked by logical AND:
|
|
|
|
- `>1.0.0 <2.0.0` would match between both ranges, so `1.1.1` and `1.8.7` but not `1.0.0` or `2.0.0`
|
|
- `>1.0.0 <3.0.0 !2.0.3-beta.2` would match every version between `1.0.0` and `3.0.0` except `2.0.3-beta.2`
|
|
|
|
Ranges can also be linked by logical OR:
|
|
|
|
- `<2.0.0 || >=3.0.0` would match `1.x.x` and `3.x.x` but not `2.x.x`
|
|
|
|
AND has a higher precedence than OR. It's not possible to use brackets.
|
|
|
|
Ranges can be combined by both AND and OR
|
|
|
|
- `>1.0.0 <2.0.0 || >3.0.0 !4.2.1` would match `1.2.3`, `1.9.9`, `3.1.1`, but not `4.2.1`, `2.1.1`
|
|
|
|
Range usage:
|
|
|
|
```
|
|
v, err := semver.Parse("1.2.3")
|
|
range, err := semver.ParseRange(">1.0.0 <2.0.0 || >=3.0.0")
|
|
if range(v) {
|
|
//valid
|
|
}
|
|
|
|
```
|
|
|
|
Example
|
|
-----
|
|
|
|
Have a look at full examples in [examples/main.go](examples/main.go)
|
|
|
|
```go
|
|
import github.com/blang/semver
|
|
|
|
v, err := semver.Make("0.0.1-alpha.preview+123.github")
|
|
fmt.Printf("Major: %d\n", v.Major)
|
|
fmt.Printf("Minor: %d\n", v.Minor)
|
|
fmt.Printf("Patch: %d\n", v.Patch)
|
|
fmt.Printf("Pre: %s\n", v.Pre)
|
|
fmt.Printf("Build: %s\n", v.Build)
|
|
|
|
// Prerelease versions array
|
|
if len(v.Pre) > 0 {
|
|
fmt.Println("Prerelease versions:")
|
|
for i, pre := range v.Pre {
|
|
fmt.Printf("%d: %q\n", i, pre)
|
|
}
|
|
}
|
|
|
|
// Build meta data array
|
|
if len(v.Build) > 0 {
|
|
fmt.Println("Build meta data:")
|
|
for i, build := range v.Build {
|
|
fmt.Printf("%d: %q\n", i, build)
|
|
}
|
|
}
|
|
|
|
v001, err := semver.Make("0.0.1")
|
|
// Compare using helpers: v.GT(v2), v.LT, v.GTE, v.LTE
|
|
v001.GT(v) == true
|
|
v.LT(v001) == true
|
|
v.GTE(v) == true
|
|
v.LTE(v) == true
|
|
|
|
// Or use v.Compare(v2) for comparisons (-1, 0, 1):
|
|
v001.Compare(v) == 1
|
|
v.Compare(v001) == -1
|
|
v.Compare(v) == 0
|
|
|
|
// Manipulate Version in place:
|
|
v.Pre[0], err = semver.NewPRVersion("beta")
|
|
if err != nil {
|
|
fmt.Printf("Error parsing pre release version: %q", err)
|
|
}
|
|
|
|
fmt.Println("\nValidate versions:")
|
|
v.Build[0] = "?"
|
|
|
|
err = v.Validate()
|
|
if err != nil {
|
|
fmt.Printf("Validation failed: %s\n", err)
|
|
}
|
|
```
|
|
|
|
|
|
Benchmarks
|
|
-----
|
|
|
|
BenchmarkParseSimple-4 5000000 390 ns/op 48 B/op 1 allocs/op
|
|
BenchmarkParseComplex-4 1000000 1813 ns/op 256 B/op 7 allocs/op
|
|
BenchmarkParseAverage-4 1000000 1171 ns/op 163 B/op 4 allocs/op
|
|
BenchmarkStringSimple-4 20000000 119 ns/op 16 B/op 1 allocs/op
|
|
BenchmarkStringLarger-4 10000000 206 ns/op 32 B/op 2 allocs/op
|
|
BenchmarkStringComplex-4 5000000 324 ns/op 80 B/op 3 allocs/op
|
|
BenchmarkStringAverage-4 5000000 273 ns/op 53 B/op 2 allocs/op
|
|
BenchmarkValidateSimple-4 200000000 9.33 ns/op 0 B/op 0 allocs/op
|
|
BenchmarkValidateComplex-4 3000000 469 ns/op 0 B/op 0 allocs/op
|
|
BenchmarkValidateAverage-4 5000000 256 ns/op 0 B/op 0 allocs/op
|
|
BenchmarkCompareSimple-4 100000000 11.8 ns/op 0 B/op 0 allocs/op
|
|
BenchmarkCompareComplex-4 50000000 30.8 ns/op 0 B/op 0 allocs/op
|
|
BenchmarkCompareAverage-4 30000000 41.5 ns/op 0 B/op 0 allocs/op
|
|
BenchmarkSort-4 3000000 419 ns/op 256 B/op 2 allocs/op
|
|
BenchmarkRangeParseSimple-4 2000000 850 ns/op 192 B/op 5 allocs/op
|
|
BenchmarkRangeParseAverage-4 1000000 1677 ns/op 400 B/op 10 allocs/op
|
|
BenchmarkRangeParseComplex-4 300000 5214 ns/op 1440 B/op 30 allocs/op
|
|
BenchmarkRangeMatchSimple-4 50000000 25.6 ns/op 0 B/op 0 allocs/op
|
|
BenchmarkRangeMatchAverage-4 30000000 56.4 ns/op 0 B/op 0 allocs/op
|
|
BenchmarkRangeMatchComplex-4 10000000 153 ns/op 0 B/op 0 allocs/op
|
|
|
|
See benchmark cases at [semver_test.go](semver_test.go)
|
|
|
|
|
|
Motivation
|
|
-----
|
|
|
|
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.
|
|
|
|
|
|
Contribution
|
|
-----
|
|
|
|
Feel free to make a pull request. For bigger changes create a issue first to discuss about it.
|
|
|
|
|
|
License
|
|
-----
|
|
|
|
See [LICENSE](LICENSE) file.
|