Add jenkins file, change version number to be based on tags. And publ…

…ish to Forge maven.

Jenkinsfile

@@ -0,0 +1,55 @@
+@Library('forge-shared-library')_
+
+pipeline {
+    agent {
+        docker {
+            image 'gradlewrapper:latest'
+            args '-v gradlecache:/gradlecache'
+        }
+    }
+    environment {
+        GRADLE_ARGS = '-Dorg.gradle.daemon.idletimeout=5000'
+    }
+
+    stages {
+        stage('fetch') {
+            steps {
+                git(url: 'https://github.com/MinecraftForge/ForgeGradle.git', changelog: true)
+            }
+        }
+        stage('buildandtest') {
+            steps {
+                sh './gradlew ${GRADLE_ARGS} --refresh-dependencies --continue build test'
+                script {
+                    env.MYVERSION = sh(returnStdout: true, script: './gradlew properties -q | grep "version:" | awk \'{print $2}\'').trim()
+                }
+            }
+            post {
+                success {
+                    writeChangelog(currentBuild, 'build/changelog.txt')
+                    archiveArtifacts artifacts: 'build/changelog.txt', fingerprint: false
+                }
+            }
+        }
+        stage('publish') {
+            when {
+                not {
+                    changeRequest()
+                }
+            }
+            environment {
+                FORGE_MAVEN = credentials('forge-maven-forge-user')
+            }
+            steps {
+                sh './gradlew ${GRADLE_ARGS} publish -PforgeMavenUser=${FORGE_MAVEN_USR} -PforgeMavenPassword=${FORGE_MAVEN_PSW}'
+            }
+        }
+    }
+    post {
+        always {
+            archiveArtifacts artifacts: 'build/libs/**/*.jar', fingerprint: true
+            junit 'build/test-results/*/*.xml'
+            jacoco sourcePattern: '**/src/*/java'
+        }
+    }
+}

build.gradle

@@ -1,8 +1,22 @@
+plugins {
+  //id 'net.minecrell.licenser' version '0.3'
+  id 'org.ajoberstar.grgit' version '2.3.0'
+  //id 'com.github.johnrengelman.shadow' version '2.0.4'
+}
+
 apply plugin: 'java'
 apply plugin: 'maven-publish'
 
 group = 'net.minecraftforge.gradle'
-version = '3.0.0-SNAPSHOT'
+version = gitVersion()
+def gitVersion() {
+    def desc = grgit.describe(longDescr: true).split('-') as List
+    def hash = desc.remove(desc.size() - 1)
+    def offset = desc.remove(desc.size() - 1)
+    def tag = desc.join('-')
+    def branch = grgit.branch.current().name    
+    return "${tag}.${offset}${t -> if (branch != 'master') t << '-' + branch}"
+}
 
 sourceSets {
     common
@@ -58,7 +72,15 @@ publishing {
     }
     repositories {
         maven {
-            url "$buildDir/repo"
+            if (project.hasProperty('forgeMavenPassword')) {
+                credentials {
+                    username project.properties.forgeMavenUser
+                    password project.properties.forgeMavenPassword
+                }
+                url 'http://files.minecraftforge.net/maven/manage/upload'
+            } else {
+                url 'file://' + rootProject.file('repo').getAbsolutePath()
+            }
         }
     }
-}
+}

settings.gradle

@@ -1 +1,2 @@
-rootProject.name = 'ForgeGradle'
+rootProject.name = 'ForgeGradle'
+enableFeaturePreview('STABLE_PUBLISHING') //Make building shut up.