Feature/issue 30 migrate to gradle

.github/workflows/gradle-build.yml

@@ -0,0 +1,29 @@
+name: Java CI with Gradle
+
+on:
+    push:
+        branches: [ main ]
+    pull_request:
+        branches: [ main ]
+
+jobs:
+    build:
+        name: Java ${{ matrix.java_version }}
+        runs-on: ubuntu-latest
+        strategy:
+            fail-fast: false
+            matrix:
+                java_version: ['8']
+               # java_version: ['8', '11', '17']
+        steps:
+            - uses: actions/checkout@v4
+            - uses: actions/setup-java@v3
+              with:
+                  java-version: ${{ matrix.java_version }}
+                  distribution: 'temurin'
+            - name: Setup Gradle to generate and submit dependency graphs
+              uses: gradle/gradle-build-action@v2
+              with:
+                  dependency-graph: generate-and-submit
+            - name: Run a build and generate the dependency graph which will be submitted post-job
+              run: ./gradlew clean build --info

.github/workflows/publish-to-github-packages.yml

@@ -0,0 +1,33 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# GitHub recommends pinning actions to a commit SHA.
+# To get a newer version, you will need to update the SHA.
+# You can also reference a tag or branch, but the action may change without warning.
+
+name: Publish package to GitHub Packages
+on:
+    release:
+        types: [created]
+jobs:
+    publish:
+        runs-on: ubuntu-latest
+        permissions:
+            contents: read
+            packages: write
+        steps:
+            - uses: actions/checkout@v4
+            - uses: actions/setup-java@v3
+              with:
+                  java-version: '8'
+                  distribution: 'temurin'
+            - name: Validate Gradle wrapper
+              uses: gradle/wrapper-validation-action@ccb4328a959376b642e027874838f60f8e596de3
+            - name: Publish package
+              uses: gradle/gradle-build-action@749f47bda3e44aa060e82d7b3ef7e40d953bd629
+              with:
+                  arguments: publish
+              env:
+                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -1,13 +1,15 @@
 .classpath
 .settings
 .project
+.gradle
 workspace.xml
 bin
 target
+build/
 src/main/java/org/natty/generated/*
 src/main/java/*.tokens
-src/main/antlr3/org/natty/generated/DebugDateParser.g
-src/main/antlr3/org/natty/generated/DebugDateWalker.g
+src/main/antlr/org/natty/generated/DebugDateParser.g
+src/main/antlr/org/natty/generated/DebugDateWalker.g
 
 # IntelliJ Idea
 *.iml

README.md

@@ -15,7 +15,7 @@ Maven:
 <dependency>
   <groupId>io.github.natty-parser</groupId>
   <artifactId>natty</artifactId>
-  <version>1.0.1</version>
+  <version>1.0.3</version>
 </dependency>
 ```
 
@@ -50,3 +50,11 @@ Are more then welcome. Feel free to reach out (e.g. by creating an issue in this
 maintainers. Tag @mccartney if no response for 2-3 days (I might have missed that).
 
 I see this project potentially being welcoming to many, incl. quite junior and inexperienced developers, who would like to learn and contribute.
+
+## Build
+
+Builds are done using the gradle wrapper. All that's need is a JDK (8 or upwards) to be installed on the machine.
+
+```shell
+./gradlew build
+```

build.gradle

@@ -0,0 +1,61 @@
+
+plugins {
+    id 'java-library'
+    id 'maven-publish'
+    id 'antlr'
+
+    alias(libs.plugins.nebula.release)
+}
+
+repositories {
+    mavenLocal()
+    maven {
+        url = uri('https://repo.maven.apache.org/maven2/')
+    }
+}
+
+dependencies {
+    api libs.antlr.runtime
+    api libs.ical4j
+    api libs.slf4j.api
+
+    antlr libs.antlr
+
+    testImplementation libs.slf4j.log4j12
+    testImplementation libs.logback.classic
+    testImplementation libs.junit
+    testImplementation libs.antlr.gunit
+
+}
+
+description = 'Natty Date Parser'
+
+generateGrammarSource {
+
+    arguments += ["-visitor",
+                  "-listener",
+                  "-long-messages",
+                  "-lib", "src/main/antlr/org/natty/generated/imports"
+    ]
+    outputDirectory =  file("${project.buildDir}/generated-src/antlr/")
+    source "src/main/antlr"
+    include "org/natty/generated/DateLexer.g"
+    include "org/natty/generated/DateParser.g"
+
+}
+
+publishing {
+    publications {
+        maven(MavenPublication) {
+            from(components.java)
+        }
+    }
+}
+
+tasks.withType(JavaCompile).configureEach {
+    options.encoding = 'UTF-8'
+}
+
+tasks.withType(Javadoc).configureEach {
+    options.encoding = 'UTF-8'
+}

gradle.properties

@@ -0,0 +1,5 @@
+group=io.github.natty-parser
+
+# nebula release settings
+release.scope=patch
+release.stage=SNAPSHOT

gradle/libs.versions.toml

@@ -0,0 +1,26 @@
+# This file was generated by the Gradle 'init' task.
+# https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format
+
+[versions]
+logback-classic = "1.3.14"
+junit = "4.13.2"
+antlr = "3.5.3"
+ical4j = "3.2.14"
+slf4j-api = "2.0.9"
+slf4j-log4j12 = "1.7.36"
+
+# gradle plugins
+nebula-release = "18.0.5"
+
+[libraries]
+logback-classic = { module = "ch.qos.logback:logback-classic", version.ref = "logback-classic" }
+junit = { module = "junit:junit", version.ref = "junit" }
+antlr-runtime = { module = "org.antlr:antlr-runtime", version.ref = "antlr" }
+antlr = { module = "org.antlr:antlr", version.ref = "antlr" }
+antlr-gunit = { module = "org.antlr:gunit", version.ref = "antlr" }
+ical4j = { module = "org.mnode.ical4j:ical4j", version.ref = "ical4j" }
+slf4j-api = { module = "org.slf4j:slf4j-api", version.ref = "slf4j-api" }
+slf4j-log4j12 = { module = "org.slf4j:slf4j-log4j12", version.ref = "slf4j-log4j12" }
+
+[plugins]
+nebula-release = { id = "nebula.release", version.ref="nebula-release" }

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists