ci: rebuild release infrastructure on GitHub Actions

.github/workflows/release.yml

@@ -0,0 +1,211 @@
+# The way this works is a little weird. But basically, the create-release job
+# runs purely to initialize the GitHub release itself. Once done, the upload
+# URL of the release is saved as an artifact.
+#
+# The build-release job runs only once create-release is finished. It gets
+# the release upload URL by downloading the corresponding artifact (which was
+# uploaded by create-release). It then builds the release executables for each
+# supported platform and attaches them as release assets to the previously
+# created release.
+#
+# The key here is that we create the release only once.
+
+name: release
+on:
+  push:
+    # Enable when testing release infrastructure on a branch.
+    # branches:
+    # - ag/release
+    tags:
+    - '[0-9]+.[0-9]+.[0-9]+'
+jobs:
+  create-release:
+    name: create-release
+    runs-on: ubuntu-latest
+    env:
+      # Set to force version number, e.g., when no tag exists.
+      # RG_VERSION: TEST-0.0.0
+    steps:
+      - name: Create artifacts directory
+        run: mkdir artifacts
+
+      - name: Get the release version from the tag
+        if: env.RG_VERSION == ''
+        run: |
+          # Apparently, this is the right way to get a tag name. Really?
+          #
+          # See: https://github.community/t5/GitHub-Actions/How-to-get-just-the-tag-name/m-p/32167/highlight/true#M1027
+          echo "::set-env name=RG_VERSION::${GITHUB_REF#refs/tags/}"
+          echo "version is: ${{ env.RG_VERSION }}"
+
+      - name: Create GitHub release
+        id: release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ env.RG_VERSION }}
+          release_name: ripgrep ${{ env.RG_VERSION }}
+
+      - name: Save release upload URL to artifact
+        run: echo "${{ steps.release.outputs.upload_url }}" > artifacts/release-upload-url
+
+      - name: Save version number to artifact
+        run: echo "${{ env.RG_VERSION }}" > artifacts/release-version
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v1
+        with:
+          name: artifacts
+          path: artifacts
+
+  build-release:
+    name: build-release
+    needs: ['create-release']
+    runs-on: ${{ matrix.os }}
+    env:
+      # For some builds, we use cross to test on 32-bit and big-endian
+      # systems.
+      CARGO: cargo
+      # When CARGO is set to CROSS, this is set to `--target matrix.target`.
+      TARGET_FLAGS:
+      # When CARGO is set to CROSS, TARGET_DIR includes matrix.target.
+      TARGET_DIR: ./target
+      # Emit backtraces on panics.
+      RUST_BACKTRACE: 1
+      # Build static releases with PCRE2.
+      PCRE2_SYS_STATIC: 1
+    strategy:
+      matrix:
+        build: [linux, linux-arm, macos, win-msvc, win-gnu, win32-msvc]
+        include:
+        - build: linux
+          os: ubuntu-18.04
+          rust: nightly
+          target: x86_64-unknown-linux-musl
+        - build: linux-arm
+          os: ubuntu-18.04
+          rust: nightly
+          target: arm-unknown-linux-gnueabihf
+        - build: macos
+          os: macos-latest
+          rust: nightly
+          target: x86_64-apple-darwin
+        - build: win-msvc
+          os: windows-2019
+          rust: nightly
+          target: x86_64-pc-windows-msvc
+        - build: win-gnu
+          os: windows-2019
+          rust: nightly-x86_64-gnu
+          target: x86_64-pc-windows-gnu
+        - build: win32-msvc
+          os: windows-2019
+          rust: nightly
+          target: i686-pc-windows-msvc
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
+
+    - name: Install packages (Ubuntu)
+      if: matrix.os == 'ubuntu-18.04'
+      run: |
+        ci/ubuntu-install-packages
+
+    - name: Install packages (macOS)
+      if: matrix.os == 'macos-latest'
+      run: |
+        ci/macos-install-packages
+
+    - name: Install Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: ${{ matrix.rust }}
+        profile: minimal
+        override: true
+        target: ${{ matrix.target }}
+
+    - name: Use Cross
+      # if: matrix.os != 'windows-2019'
+      run: |
+        # FIXME: to work around bugs in latest cross release, install master.
+        # See: https://github.com/rust-embedded/cross/issues/357
+        cargo install --git https://github.com/rust-embedded/cross
+        echo "::set-env name=CARGO::cross"
+        echo "::set-env name=TARGET_FLAGS::--target ${{ matrix.target }}"
+        echo "::set-env name=TARGET_DIR::./target/${{ matrix.target }}"
+
+    - name: Show command used for Cargo
+      run: |
+        echo "cargo command is: ${{ env.CARGO }}"
+        echo "target flag is: ${{ env.TARGET_FLAGS }}"
+        echo "target dir is: ${{ env.TARGET_DIR }}"
+
+    - name: Get release download URL
+      uses: actions/download-artifact@v1
+      with:
+        name: artifacts
+        path: artifacts
+
+    - name: Set release upload URL and release version
+      shell: bash
+      run: |
+        release_upload_url="$(cat artifacts/release-upload-url)"
+        echo "::set-env name=RELEASE_UPLOAD_URL::$release_upload_url"
+        echo "release upload url: $RELEASE_UPLOAD_URL"
+        release_version="$(cat artifacts/release-version)"
+        echo "::set-env name=RELEASE_VERSION::$release_version"
+        echo "release version: $RELEASE_VERSION"
+
+    - name: Build release binary
+      run: ${{ env.CARGO }} build --verbose --release --features pcre2 ${{ env.TARGET_FLAGS }}
+
+    - name: Strip release binary (linux and macos)
+      if: matrix.build == 'linux' || matrix.build == 'macos'
+      run: strip "target/${{ matrix.target }}/release/rg"
+
+    - name: Strip release binary (arm)
+      if: matrix.build == 'linux-arm'
+      run: |
+        docker run --rm -v \
+          "$PWD/target:/target:Z" \
+          rustembedded/cross:arm-unknown-linux-gnueabihf \
+          arm-linux-gnueabihf-strip \
+          /target/arm-unknown-linux-gnueabihf/release/rg
+
+    - name: Build archive
+      shell: bash
+      run: |
+        outdir="$(ci/cargo-out-dir "${{ env.TARGET_DIR }}")"
+        staging="ripgrep-${{ env.RELEASE_VERSION }}-${{ matrix.target }}"
+        mkdir -p "$staging"/{complete,doc}
+
+        cp {README.md,COPYING,UNLICENSE,LICENSE-MIT} "$staging/"
+        cp {CHANGELOG.md,FAQ.md,GUIDE.md} "$staging/doc/"
+        cp "$outdir"/{rg.bash,rg.fish,_rg.ps1} "$staging/complete/"
+        cp complete/_rg "$staging/complete/"
+
+        if [ "${{ matrix.os }}" = "windows-2019" ]; then
+          cp "target/${{ matrix.target }}/release/rg.exe" "$staging/"
+          7z a "$staging.zip" "$staging"
+          echo "::set-env name=ASSET::$staging.zip"
+        else
+          # The man page is only generated on Unix systems. ¯\_(ツ)_/¯
+          cp "$outdir"/rg.1 "$staging/doc/"
+          cp "target/${{ matrix.target }}/release/rg" "$staging/"
+          tar czf "$staging.tar.gz" "$staging"
+          echo "::set-env name=ASSET::$staging.tar.gz"
+        fi
+
+    - name: Upload release archive
+      uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ env.RELEASE_UPLOAD_URL }}
+        asset_path: ${{ env.ASSET }}
+        asset_name: ${{ env.ASSET }}
+        asset_content_type: application/octet-stream