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# go-mvn-version
A Go library for parsing maven(java) package versions
go-mvn-version is a library for parsing and comparing versions
The implementation is based on [this specification](https://maven.apache.org/pom.html#Version_Order_Specification)
other reference: [maven implementation](https://github.com/apache/maven/blob/master/maven-artifact/src/main/java/org/apache/maven/artifact/versioning/ComparableVersion.java)
# Installation and Usage
Installation can be done with a normal go get:
```
$ go get github.com/masahiro331/go-mvn-version
```
# Version Parsing and Comparison
```
import "github.com/masahiro331/go-mvn-version"
v1, err := version.NewVersion("10-snapshot")
v2, err := version.NewVersion("10-b1")
if v1.GreaterThan(*v2) {
fmt.Printf("%s is greater than %s", v1, v2)
}
```
# WARNING
This implementation based on the [maven specification](https://maven.apache.org/pom.html#Version_Order_Specification), but not the [maven implementation](https://github.com/apache/maven/blob/master/maven-artifact/src/main/java/org/apache/maven/artifact/versioning/ComparableVersion.java).
See issues: [ComparableVersion incorrectly parses certain version strings](https://issues.apache.org/jira/browse/MNG-6420)
```
$ go test .
--- FAIL: TestVersionsNumber (0.00s)
version_test.go:415: expected: 2.0.a < 2.0.0.a
version_test.go:418: expected: 2.0.0.a > 2.0.a
FAIL
FAIL github.com/masahiro331/go-mvn-version/pkg/version 0.005s
FAIL
```
----
# License
Apache License 2.0
# Author
Masahiro Fujimura
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