CI: add build logic to deploy releases to Sonatype

Author: ctrueden

.github/build.sh

@@ -1,3 +1,38 @@
 #!/bin/sh
-curl -fsLO https://raw.githubusercontent.com/scijava/scijava-scripts/main/ci-build.sh
-sh ci-build.sh
+curl -fsLO https://raw.githubusercontent.com/scijava/scijava-scripts/main/ci-build.sh &&
+sh ci-build.sh && {
+  die() { echo "[ERROR] $1"; exit 1; }
+
+  echo
+  echo "== Extracting ImageJ version from source code =="
+  version=$(grep -o ' VERSION *= *"[^"]*' ij/ImageJ.java) ||
+    die "Failed to extract version from ij/ImageJ.java"
+  build=$(grep -o ' BUILD *= *"[^"]*' ij/ImageJ.java) ||
+    die "Failed to extract build number from ij/ImageJ.java"
+  version=${version#*\"}
+  build=${build#*\"}
+  echo "VERSION = $version"
+  echo "BUILD = $build"
+
+  if [ "$build" = "" ]
+  then
+    # Sanity checks.
+    test "$version" || die "Empty version string!"
+    echo "$version" | grep -q '^[0-9]\+\.[0-9]\+[a-z]$' ||
+      die "Unexpected format for version string $version"
+
+    echo
+    echo "== Releasing ImageJ v$version =="
+
+    # Tweak the Maven POM to reflect the release version.
+    cat pom.xml | sed -e "s/1\.x-SNAPSHOT/$version/" -e "s/<tag>HEAD</<tag>v$version</" > pom.new &&
+      mv -f pom.new pom.xml ||
+      die "Failed to adjust pom.xml to match release version $version"
+
+    # Deploy the release.
+    mvn -Psonatype-oss-release -B -Djdk.tls.client.protocols="TLSv1,TLSv1.1,TLSv1.2" deploy
+  else
+    echo
+    echo "== Skipping release for daily build $version$build =="
+  fi
+}