sudo: false
language: rust
rust:
    - beta
    - nightly
    - stable

matrix:
    allow_failures:
        - rust: nightly

before_install:
    - |
      c=$(git diff $TRAVIS_BRANCH..$TRAVIS_COMMIT --name-only | cut -d "/" -f 1 | uniq)
      if [[ "$c" == "doc" ]]; then
          echo "Only changes in DOC, exiting 0"
          exit 0
      else
        echo "Changes in other directories than ./doc"
        echo "continue build..."
      fi

before_script:
    - |
        pip install 'travis-cargo<0.2' --user &&
        export PATH=$HOME/.local/bin:$PATH

script:
    - |
        changes_in() {
            [[ $(git diff --name-only $TRAVIS_BRANCH..$TRAVIS_COMMIT | \
                cut -d "/" -f 1 | \
                grep "$n") ]] > /dev/null
        }

        travis_cargo_run_in() {
            [[ -d "$1" ]] &&
            cd "$1" &&
            travis-cargo build &&
            travis-cargo test &&
            travis-cargo bench &&
            travis-cargo --only stable doc &&
            cd -
        }

        [[ $(changes_in "doc") ]] && echo "Changes in ./doc are not build by CI"

        for d in $(find -name "Cargo.toml" | grep -vE "^.$"); do
            dir=$(dirname $d)
            changes_in $dir &&                \
              echo -e "\nRunning in $d\n" &&  \
              travis_cargo_run_in $dir
        done

        echo -e "\nRunning on top-level crate...\n"
        travis_cargo_run_in "."

addons:
    apt:
        packages:
            - libcurl4-openssl-dev
            - libelf-dev
            - libdw-dev

after_success:
    - travis-cargo --only stable doc-upload

notifications:
    email:
        on_success: never

env:
    global:
        - TRAVIS_CARGO_NIGHTLY_FEATURE=dev