WIP

Author: HarryGogonis

.github/workflows/test.yml

@@ -15,11 +15,14 @@ jobs:
         uses: ./
         with:
           base_ref: 027b33661ae3211230e8cd03d19df49ba620b379
-          head_ref: b887e3e0a09cc67b0d12c1d16200955cdf0f767a
+          head_ref: 182a672418c5bae4d6b7ca1244da5f28bf5ff6f0
           kustomizations: |-
             testdata/prod
             testdata/stage
       - run: echo "${{ steps.test-action.outputs.diff }}"
       - uses: mshick/add-pr-comment@v2
         with:
-          message: "```${{ steps.test-action.outputs.diff }}```"
+          message: |
+            ```diff
+            ${{ steps.test-action.outputs.diff }}
+            ```

Dockerfile

@@ -1,23 +1,7 @@
-# FROM debian:bookworm-slim
-
-# ARG TARGETOS
-# ARG TARGETARCH
-# ARG KUSTOMIZE_VERSION=5.4.3
-
-# RUN apt-get -yqq update \
-# 	&& apt-get -yqq install --no-install-recommends \
-# 	bash \
-# 	curl \
-# 	git \
-# 	ca-certificates \
-# 	&& rm -rf /var/lib/apt/lists/*
-
-# RUN curl -fL https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize/v${KUSTOMIZE_VERSION}/kustomize_v${KUSTOMIZE_VERSION}_${TARGETOS}_${TARGETARCH}.tar.gz | tar xz -C /usr/local/bin
-
-# COPY entrypoint.sh .
-# ENTRYPOINT [ "./entrypoint.sh" ]
-
 FROM registry.k8s.io/kustomize/kustomize:v5.0.0
 
+RUN apk add --no-cache sed && \
+	apk add difftastic --repository=https://dl-cdn.alpinelinux.org/alpine/edge/community
+
 COPY entrypoint.sh .
 ENTRYPOINT [ "./entrypoint.sh" ]

entrypoint.sh

@@ -17,16 +17,21 @@ build() {
 
 git config --global --add safe.directory "$GITHUB_WORKSPACE"
 
-build $INPUT_BASE_REF
-build $INPUT_HEAD_REF
+build "$INPUT_BASE_REF"
+build "$INPUT_HEAD_REF"
 
-diff="$(git diff --no-index "$build_dir/$INPUT_BASE_REF" "$build_dir/$INPUT_HEAD_REF")"
-escaped_output=$diff # TODO Escape output
+diff="$(GIT_EXTERNAL_DIFF=difft git diff --no-index "$build_dir/$INPUT_BASE_REF" "$build_dir/$INPUT_HEAD_REF" || true)"
+output=$(echo "$diff")
 
 # If escaped output is longer than 65000 characters return "output to large to print as a github comment"
-if [ ${#escaped_output} -gt 65000 ]; then
-	escaped_output="Output is greater than 65000 characters, and therefore too large to print as a github comment."
+if [ ${#output} -gt 65000 ]; then
+	output="Output is greater than 65000 characters, and therefore too large to print as a github comment."
 fi
 
-echo "diff=$escaped_output" >>"$GITHUB_OUTPUT"
+{
+	echo 'diff<<EOF'
+	echo "$output"
+	echo 'EOF'
+} >>"$GITHUB_OUTPUT"
+
 exit 0