version for AVA Framework

version is a Semantic Versioning library written in golang. It fully covers spec version 2.0.0.

Usage

$ go get github.com/ver13/ava/pkg/common/version

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

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 := SemanticVersion.Parse("1.2.3")
expectedRange, err := SemanticVersion.ParseRange(">1.0.0 <2.0.0 || >=3.0.0")
if expectedRange(v) {
    //valid
}

Example

Have a look at full examples in examples/version/main.go

import github.com/ver13/ava/pkg/common/version

v, err := version.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 := version.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 = version.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)
}

Build

go build -X "github.com/ver13/ava/pkg/common/version.name=Golang Microservices Framework" \
         -X "github.com/ver13/ava/pkg/common/version.ServerName=gmfServer" \
         -X "github.com/ver13/ava/pkg/common/version.ClientName=gmfCli" \
         -X "github.com/ver13/ava/pkg/common/version.version=v1.0.0" \
         -X "github.com/ver13/ava/pkg/common/version.Commit=f0f7b7dab7e36c20b757cebce0e8f4fc5b95de60" \
         -X "github.com/ver13/ava/pkg/common/version.BuildTags=linux darwin amd64"