Add a helper for ImageJ's Jenkins jobs

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

git-info-for-jenkins-job.groovy

@@ -0,0 +1,38 @@
+#!/usr/bin/jenkins-cli
+
+/**
+ * Prints author information for use by Git about the user who started a given
+ * Jenkins build. Example usage in an 'Execute shell' build step:
+ *
+ * eval "$(jenkins-cli groovy git-info-for-job.groovy $JOB_NAME $BUILD_NUMBER)"
+ */
+
+if (this.args.length != 2) {
+        throw new IllegalArgumentException("Usage: author-ident <job> <build-number>")
+}
+
+projectName = this.args[0]
+buildNumber = Integer.parseInt(this.args[1])
+
+map = jenkins.model.Jenkins.instance.getItemMap()
+project = map.get(projectName)
+build = project.getBuildByNumber(buildNumber)
+
+emailMap = [
+        "Curtis Rueden": "[email protected]",
+        "Johannes Schindelin": "[email protected]",
+        "Mark Hiner": "[email protected]"
+]
+
+for (cause in build.getCauses()) try {
+        name = cause.getUserName()
+        println('GIT_AUTHOR_NAME="' + name + '"')
+        println('export GIT_AUTHOR_NAME')
+        email = emailMap[name]
+        if (email == null) {
+                email = name.toLowerCase().replaceAll(' ', '.') + '@jenkins.imagej.net'
+        }
+        println('GIT_AUTHOR_EMAIL="' + email + '"')
+        println('export GIT_AUTHOR_EMAIL')
+        break
+} catch (e) { /* ignore */ }