Deploy snapshots versions in CI

.travis.yml

@@ -9,7 +9,7 @@ matrix:
   include:
     # unit tests (oraclejdk8)
     - jdk: oraclejdk8
-      env: DESC="tests" CMD="mvn clean integration-test failsafe:verify" COVERAGE_CMD=""
+      env: DESC="tests" CMD="mvn clean integration-test failsafe:verify" COVERAGE_CMD="" DEPLOY="true"
 
     # unit tests in German locale (oraclejdk8)
     - jdk: oraclejdk8
@@ -226,6 +226,7 @@ script: eval $CMD
 
 after_success:
   - eval $COVERAGE_CMD
+  - if [[ $TRAVIS_REPO_SLUG == 'checkstyle/checkstyle' && $TRAVIS_BRANCH == 'master' && $TRAVIS_PULL_REQUEST == 'false' && $DEPLOY == 'true' ]]; then mvn -s config/deploy-settings.xml deploy ; fi
 
 cache:
   directories:

config/deploy-settings.xml

@@ -0,0 +1,9 @@
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
+  <servers>
+    <server>
+      <id>sonatype-nexus-snapshots</id>
+      <username>${env.CI_DEPLOY_USERNAME}</username>
+      <password>${env.CI_DEPLOY_PASSWORD}</password>
+    </server>
+  </servers>
+</settings>