name: ci
on:
  pull_request:
  push:
    branches:
    - master
  schedule:
  - cron: '00 01 * * *'

# The section is needed to drop write-all permissions that are granted on
# `schedule` event. By specifying any permission explicitly all others are set
# to none. By using the principle of least privilege the damage a compromised
# workflow can do (because of an injection or compromised third party tool or
# action) is restricted. Currently the worklow doesn't need any additional
# permission except for pulling the code. Adding labels to issues, commenting
# on pull-requests, etc. may need additional permissions:
#
# Syntax for this section:
# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions
#
# Reference for how to assign permissions on a job-by-job basis:
# https://docs.github.com/en/actions/using-jobs/assigning-permissions-to-jobs
#
# Reference for available permissions that we can enable if needed:
# https://docs.github.com/en/actions/security-guides/automatic-token-authentication#permissions-for-the-github_token
permissions:
  # to fetch code (actions/checkout)
  contents: read

jobs:
  test:
    name: test
    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`.
      # Note that we only use cross on Linux, so setting a target on a
      # different OS will just use normal cargo.
      TARGET_FLAGS:
      # When CARGO is set to CROSS, TARGET_DIR includes matrix.target.
      TARGET_DIR: ./target
      # Bump this as appropriate. We pin to a version to make sure CI
      # continues to work as cross releases in the past have broken things
      # in subtle ways.
      CROSS_VERSION: v0.2.5
      # Emit backtraces on panics.
      RUST_BACKTRACE: 1
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        include:
        - build: pinned
          os: ubuntu-latest
          rust: 1.70.0
        - build: stable
          os: ubuntu-latest
          rust: stable
        - build: beta
          os: ubuntu-latest
          rust: beta
        - build: nightly
          os: ubuntu-latest
          rust: nightly
        - build: stable-musl
          os: ubuntu-latest
          rust: stable
          target: x86_64-unknown-linux-musl
        - build: stable-x86
          os: ubuntu-latest
          rust: stable
          target: i686-unknown-linux-gnu
        - build: stable-aarch64
          os: ubuntu-latest
          rust: stable
          target: aarch64-unknown-linux-gnu
        - build: stable-powerpc64
          os: ubuntu-latest
          rust: stable
          target: powerpc64-unknown-linux-gnu
        - build: stable-s390x
          os: ubuntu-latest
          rust: stable
          target: s390x-unknown-linux-gnu
        - build: macos
          os: macos-latest
          rust: nightly
        - build: win-msvc
          os: windows-2022
          rust: nightly
        - build: win-gnu
          os: windows-2022
          rust: nightly-x86_64-gnu
    steps:
    - name: Checkout repository
      uses: actions/checkout@v3

    - name: Install packages (Ubuntu)
      if: matrix.os == 'ubuntu-latest'
      run: |
        ci/ubuntu-install-packages

    - name: Install packages (macOS)
      if: matrix.os == 'macos-latest'
      run: |
        ci/macos-install-packages

    - name: Install Rust
      uses: dtolnay/rust-toolchain@master
      with:
        toolchain: ${{ matrix.rust }}

    - name: Use Cross
      if: matrix.os == 'ubuntu-latest' && matrix.target != ''
      run: |
        # In the past, new releases of 'cross' have broken CI. So for now, we
        # pin it. We also use their pre-compiled binary releases because cross
        # has over 100 dependencies and takes a bit to compile.
        dir="$RUNNER_TEMP/cross-download"
        mkdir "$dir"
        echo "$dir" >> $GITHUB_PATH
        cd "$dir"
        curl -LO "https://github.com/cross-rs/cross/releases/download/$CROSS_VERSION/cross-x86_64-unknown-linux-musl.tar.gz"
        tar xf cross-x86_64-unknown-linux-musl.tar.gz
        echo "CARGO=cross" >> $GITHUB_ENV
        echo "TARGET_FLAGS=--target ${{ matrix.target }}" >> $GITHUB_ENV
        echo "TARGET_DIR=./target/${{ matrix.target }}" >> $GITHUB_ENV

    - name: Show command used for Cargo
      run: |
        echo "cargo command is: ${{ env.CARGO }}"
        echo "target flag is: ${{ env.TARGET_FLAGS }}"

    - name: Build ripgrep and all crates
      run: ${{ env.CARGO }} build --verbose --workspace ${{ env.TARGET_FLAGS }}

    - name: Build ripgrep with PCRE2
      run: ${{ env.CARGO }} build --verbose --workspace --features pcre2 ${{ env.TARGET_FLAGS }}

    # This is useful for debugging problems when the expected build artifacts
    # (like shell completions and man pages) aren't generated.
    - name: Show build.rs stderr
      shell: bash
      run: |
        set +x
        stderr="$(find "${{ env.TARGET_DIR }}/debug" -name stderr -print0 | xargs -0 ls -t | head -n1)"
        if [ -s "$stderr" ]; then
          echo "===== $stderr ===== "
          cat "$stderr"
          echo "====="
        fi
        set -x

    - name: Run tests with PCRE2 (sans cross)
      if: matrix.target == ''
      run: ${{ env.CARGO }} test --verbose --workspace --features pcre2 ${{ env.TARGET_FLAGS }}

    - name: Run tests without PCRE2 (with cross)
      # These tests should actually work, but they almost double the runtime.
      # Every integration test spins up qemu to run 'rg', and when PCRE2 is
      # enabled, every integration test is run twice: one with the default
      # regex engine and once with PCRE2.
      if: matrix.target != ''
      run: ${{ env.CARGO }} test --verbose --workspace ${{ env.TARGET_FLAGS }}

    - name: Test for existence of build artifacts (Windows)
      if: matrix.os == 'windows-2022'
      shell: bash
      run: |
        outdir="$(ci/cargo-out-dir "${{ env.TARGET_DIR }}")"
        ls "$outdir/_rg.ps1" && file "$outdir/_rg.ps1"

    - name: Test for existence of build artifacts (Unix)
      if: matrix.os != 'windows-2022'
      shell: bash
      run: |
        outdir="$(ci/cargo-out-dir "${{ env.TARGET_DIR }}")"
        # TODO: Check for the man page generation here. For whatever reason,
        # it seems to be intermittently failing in CI. No idea why.
        # for f in rg.bash rg.fish rg.1; do
        for f in rg.bash rg.fish; do
          # We could use file -E here, but it isn't supported on macOS.
          ls "$outdir/$f" && file "$outdir/$f"
        done

    - name: Test zsh shell completions (Unix, sans cross)
      # We could test this when using Cross, but we'd have to execute the
      # 'rg' binary (done in test-complete) with qemu, which is a pain and
      # doesn't really gain us much. If shell completion works in one place,
      # it probably works everywhere.
      if: matrix.target == '' && matrix.os != 'windows-2022'
      shell: bash
      run: ci/test-complete

  rustfmt:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v3
    - name: Install Rust
      uses: dtolnay/rust-toolchain@master
      with:
        toolchain: stable
        components: rustfmt
    - name: Check formatting
      run: cargo fmt --all --check

  docs:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable
      - name: Check documentation
        env:
          RUSTDOCFLAGS: -D warnings
        run: cargo doc --no-deps --document-private-items --workspace