sudo: false

language: cpp

cache:
  apt: true
  ccache: true
#  directories:
#    - $BUILD_DEPS


# Do not build our sync branch.
branches:
  only:
    - master
    - Travis*

# Without the top-level env, no job will be allowed to fail.
env:

matrix:
  # Abort all builds on a single failing matrix entry.
  fast_finish: true

  exclude:
    # Note: Workaround travis-ci/travis-ci#4681
    # Exclude default job which lacks our included environment variables.
    - os: linux
    - env:

  include:
    # There seems to be a hard limit to how many machines a Travis build will
    # across all platforms. By interleaving OS X, the hope is to get in the
    # queue faster while not blocking Linux builds from occuring.
    - os: linux
      env: TOOL=clang-format
      addons:
        apt:
          sources: &sources
            - ubuntu-toolchain-r-test
            - llvm-toolchain-precise-3.9
          packages: ['clang-format-3.9']
      compiler: clang

    - os: linux
      env: TOOL=clang-tidy-analyzer
      addons:
        apt:
          sources: *sources
          packages: ['clang-3.9', 'clang-tidy-3.9', 'libstdc++-6-dev']
      compiler: clang

    - os: linux
      env: TOOL=clang-tidy-modernize
      addons:
        apt:
          sources: *sources
          packages: ['clang-3.9', 'clang-tidy-3.9', 'libstdc++-6-dev']
      compiler: clang

    - os: linux
      env: TOOL=minuit2-standalone
      compiler: clang
      install: cmake --version
      script: cd math/minuit2 && .ci/make_and_test.sh

  allow_failures:
    # clang-tidy-modernize is still experimental
    - env: TOOL=clang-tidy-modernize
    # a lot of code doesn't follow clang-format yet
    - env: TOOL=clang-format
install:
  - |
    if [[ $TOOL == clang-tidy* ]]; then
      export BUILD_DEPS="${TRAVIS_BUILD_DIR}/deps"
      mkdir ${BUILD_DEPS} && cd ${BUILD_DEPS}
      CMAKE_URL="https://cmake.org/files/v3.6/cmake-3.6.0-Linux-x86_64.tar.gz"
      mkdir cmake && travis_retry wget --no-check-certificate --quiet -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C cmake
      export PATH=${BUILD_DEPS}/cmake/bin:${PATH}
      # Go to the Root directory
      cd -
    fi

script:
- echo "Copying and generating header files." && echo -en "travis_fold:start:install.headers"
- |
  # We need to put in place all relevant headers before running clang-tidy.
  if [[ $TOOL == clang-tidy* ]]; then
    mkdir ../build
    cd ../build
    export CC=clang-3.9
    export CXX=clang++-3.9
    cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -Dall=On -Dtesting=On -Dx11=Off ../root
    # We need to prebuild a minimal set of targets which are responsible for header copy
    # or generation.
    make -j4 move_headers intrinsics_gen ClangCommentCommandList ClangCommentCommandInfo \
             ClangCommentHTMLNamedCharacterReferences ClangCommentHTMLTagsProperties     \
             ClangCommentNodes ClangAttrImpl ClangStmtNodes ClangAttrClasses             \
             ClangAttrDump ClangCommentHTMLTags ClangDeclNodes ClangAttrVisitor          \
             ClangDiagnosticCommon ClangARMNeon ClangDiagnosticIndexName                 \
             ClangDiagnosticParse ClangDiagnosticComment ClangDiagnosticFrontend         \
             ClangDiagnosticGroups ClangDiagnosticSerialization ClangDiagnosticLex       \
             ClangDiagnosticSema ClangAttrList ClangAttrHasAttributeImpl                 \
             ClangDiagnosticAST ClangDiagnosticDriver ClangDiagnosticAnalysis            \
             ClangDriverOptions ClangAttrParserStringSwitches ClangAttrParsedAttrList    \
             ClangAttrTemplateInstantiate ClangAttrSpellingListIndex                     \
             ClangAttrParsedAttrImpl ClangAttrParsedAttrKinds googletest
    ln -s $PWD/compile_commands.json $PWD/../root/
  fi
- echo -en 'travis_fold:end:install.headers\\r'

- |
  if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
    if [[ $TOOL == 'clang-format' ]]; then
      BASE_COMMIT=$(git rev-parse $TRAVIS_BRANCH)
      echo "Running clang-format-3.9 against branch $TRAVIS_BRANCH, with hash $BASE_COMMIT"
      COMMIT_FILES=$(git diff --name-only $BASE_COMMIT | grep -i -v LinkDef)
      RESULT_OUTPUT="$(git-clang-format-3.9 --commit $BASE_COMMIT --diff --binary `which clang-format-3.9` $COMMIT_FILES)"
    
      if [ "$RESULT_OUTPUT" == "no modified files to format" ] \
        || [ "$RESULT_OUTPUT" == "clang-format did not modify any files" ] ; then

        echo "clang-format passed."
        exit 0
      else
        echo "clang-format failed."
        echo "To reproduce it locally please run"
        echo -e "\tgit checkout $TRAVIS_BRANCH"
        echo -e "\tgit-clang-format --commit $BASE_COMMIT --diff --binary $(which clang-format)"
        echo "$RESULT_OUTPUT"
        exit 1
      fi
    elif [[ $TOOL == clang-tidy* ]]; then
      CLANG_TIDY_CHECKS='-*'
      if [[ $TOOL == clang-tidy-analyzer ]]; then
        CLANG_TIDY_CHECKS+='clang-analyzer-*,-clang-analyzer-alpha*'
      elif [[ $TOOL == clang-tidy-modernize ]]; then
        CLANG_TIDY_CHECKS+='modernize*'
      fi

      echo "Running clang-tidy-3.9 only against the changes in branch $TRAVIS_BRANCH."

      cd ../root/
      # Workaround for travis issue: travis-ci/travis-ci#6069
      git remote set-branches --add origin master
      git fetch
      RESULT_OUTPUT="$(git diff -U0 origin/master | clang-tidy-diff-3.9.py -p1 -clang-tidy-binary $(which clang-tidy-3.9) \
                       -checks=$CLANG_TIDY_CHECKS)"
      if [[ $? -eq 0 ]]; then
        echo "$TOOL passed."
        exit 0
      else
        echo "To reproduce it locally please run"
        echo -e "\tgit checkout $TRAVIS_BRANCH"
        echo -e "Command: git diff -U0 $TRAVIS_BRANCH..origin/master | clang-tidy-diff.py -p1 -clang-tidy-binary \$(which clang-tidy) -checks=$CLANG_TIDY_CHECKS"
        echo "$RESULT_OUTPUT"
        exit 1
      fi
    fi
  elif [[ "$TRAVIS_EVENT_TYPE" = "cron" ]] && [[ $TOOL == 'clang-tidy' ]]; then
    # We need to ignore our vendor drops.
    FILES_REGEX='^.*root\/(?!interpreter\/|core\/clib)'

    echo "Running clang-tidy-3.9 against branch $TRAVIS_BRANCH."
    echo "run-clang-tidy-3.9.py -j4 -clang-tidy-binary $(which clang-tidy-3.9) -checks=-*,clang-analyzer-* $FILES_REGEX"
    run-clang-tidy-3.9.py -j4 -clang-tidy-binary $(which clang-tidy-3.9) -checks=-*,clang-analyzer-* $FILES_REGEX
  fi

on_failure:
  -|
  echo "Showing current directory contents"
  ls -la