actions-workflow: add check for formatting

Adds a new cargo-make task,'check-fmt', that checks first-party source code
formatting.
Adds 'check-fmt' to github actions build workflow.

.github/workflows/build.yml

@@ -32,4 +32,5 @@ jobs:
       - run: rustup toolchain install 1.53.0 && rustup default 1.53.0
       - run: cargo install --version 0.30.0 cargo-make
       - run: cargo make -e BUILDSYS_VARIANT=${{ matrix.variant }} unit-tests
+      - run: cargo make -e BUILDSYS_VARIANT=${{ matrix.variant }} check-fmt
       - run: cargo make -e BUILDSYS_VARIANT=${{ matrix.variant }} -e BUILDSYS_ARCH=${{ matrix.arch }} -e BUILDSYS_JOBS=12

Makefile.toml

@@ -268,6 +268,45 @@ ${BUILDSYS_TOOLS_DIR}/docker-go \
 '''
 ]
 
+[tasks.check-fmt]
+script = [
+'''
+rc=0
+# For golang first-party source code
+unformatted_files=$(${BUILDSYS_TOOLS_DIR}/docker-go \
+  --module-path ${BUILDSYS_SOURCES_DIR}/host-ctr \
+  --sdk-image ${BUILDSYS_SDK_IMAGE} \
+  --go-mod-cache ${GO_MOD_CACHE} \
+  --command "gofmt -l cmd/host-ctr")
+if [ -n "${unformatted_files}" ]; then
+  echo "${unformatted_files}"
+  rc=1
+fi
+
+# For rust first-party source code
+if ! cargo fmt \
+  --manifest-path ${BUILDSYS_SOURCES_DIR}/Cargo.toml \
+  --message-format short \
+  --all \
+  -- --check; then
+  rc=1
+fi
+
+if ! cargo fmt \
+  --manifest-path ${BUILDSYS_TOOLS_DIR}/Cargo.toml \
+  --message-format short \
+  --all \
+  -- --check; then
+  rc=1
+fi
+
+if [ "${rc}" -ne 0 ]; then
+  echo "Found unformatted source files listed above. First-party source code is checked with gofmt and rustfmt." >&2
+  exit $rc
+fi
+'''
+]
+
 [tasks.build-tools]
 dependencies = ["fetch"]
 script = [