80 lines
2 KiB
Markdown
80 lines
2 KiB
Markdown
go-version [](https://travis-ci.org/mcuadros/go-version) [](http://godoc.org/github.com/mcuadros/go-version)
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==============================
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Version normalizer and comparison library for go, heavy based on PHP version_compare function and Version comparsion libs from [Composer](https://github.com/composer/composer) PHP project
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Installation
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------------
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The recommended way to install go-version
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```
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go get github.com/mcuadros/go-version
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```
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Examples
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--------
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How import the package
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```go
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import (
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"github.com/mcuadros/go-version"
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)
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```
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`version.Normalize()`: Normalizes a version string to be able to perform comparisons on it
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```go
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version.Normalize("10.4.13-b")
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//Returns: 10.4.13.0-beta
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```
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`version.CompareSimple()`: Compares two normalizated version number strings
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```go
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version.CompareSimple("1.2", "1.0.1")
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//Returns: 1
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version.CompareSimple("1.0rc1", "1.0")
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//Returns: -1
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```
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`version.Compare()`: Compares two normalizated version number strings, for a particular relationship
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```go
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version.Compare("1.0-dev", "1.0", "<")
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//Returns: true
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version.Compare("1.0rc1", "1.0", ">=")
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//Returns: false
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version.Compare("2.3.4", "v3.1.2", "<")
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//Returns: true
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```
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`version.ConstrainGroup.Match()`: Match a given version againts a group of constrains, read about constraint string format at [Composer documentation](http://getcomposer.org/doc/01-basic-usage.md#package-versions)
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```go
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c := version.NewConstrainGroupFromString(">2.0,<=3.0")
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c.Match("2.5.0beta")
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//Returns: true
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c := version.NewConstrainGroupFromString("~1.2.3")
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c.Match("1.2.3.5")
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//Returns: true
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```
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`version.Sort()`: Sorts a string slice of version number strings using version.CompareSimple()
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```go
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version.Sort([]string{"1.10-dev", "1.0rc1", "1.0", "1.0-dev"})
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//Returns []string{"1.0-dev", "1.0rc1", "1.0", "1.10-dev"}
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```
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License
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-------
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MIT, see [LICENSE](LICENSE)
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