.gitlab-ci/clang-format.sh

   1 #!/bin/bash
   2 # vim: et sts=4 sw=4
   3
   4 set -euo pipefail
   5
   6 # The following approach was shamelessly copied from ci-fairy
   7 # https://gitlab.freedesktop.org/freedesktop/ci-templates/-/blob/master/tools/ci_fairy.py
   8 # CHANGES: Swap CI for CI_MERGE_REQUEST_ID, add CI_COMMIT_BRANCH.
   9 if [[ ${CI_MERGE_REQUEST_ID-} ]]; then
  10     upstream="${FDO_UPSTREAM_REPO-}"
  11     if [[ ! "$upstream" ]]; then
  12         echo "$FDO_UPSTREAM_REPO not set, using local branches to compare"
  13         upstream="${CI_PROJECT_PATH}"
  14     fi
  15     host="${CI_SERVER_HOST}"
  16     token="${CI_JOB_TOKEN}"
  17     url="https://gitlab-ci-token:$token@$host/$upstream"
  18
  19     remote="clang-fairy"
  20     if ! git remote | grep -qw "$remote"; then
  21         git remote add "$remote" "$url"
  22     fi
  23     git fetch "$remote"
  24
  25     # There are two types of MRs apparently
  26     if [[ ${CI_MERGE_REQUEST_TARGET_BRANCH_SHA-} ]]; then
  27         echo "Using CI_MERGE_REQUEST_SOURCE_BRANCH_SHA"
  28         commit=$CI_MERGE_REQUEST_SOURCE_BRANCH_SHA
  29     elif [[ ${CI_MERGE_REQUEST_DIFF_BASE_SHA-} ]]; then
  30         echo "Using CI_MERGE_REQUEST_DIFF_BASE_SHA"
  31         commit=$CI_MERGE_REQUEST_DIFF_BASE_SHA
  32     else
  33         echo "Looking like a MR, but CI variables are not set."
  34         echo "Using the default branch \"$CI_DEFAULT_BRANCH\"."
  35         commit="$remote/$CI_DEFAULT_BRANCH"
  36     fi
  37 elif [[ ${CI_COMMIT_BRANCH-} ]]; then
  38     echo "Using CI_COMMIT_BEFORE_SHA"
  39     commit=$CI_COMMIT_BEFORE_SHA
  40 else
  41     commit="master"
  42 fi
  43
  44 # End of the shameless copy
  45
  46 # Older versions of clang-format like 6 and 7 print an annoying message.
  47 # "no modified files to format". Newer ones like 12 (earlier?), do not.
  48 formatting_changes=$(git-clang-format --commit "$commit" -q --diff | grep -v "no modified files to format" || true)
  49 [[ "$formatting_changes" ]] || exit 0
  50
  51 echo "ERROR: Formatting issues detected"
  52 echo
  53 echo "Update the codebase as indicated or disable clang-format locally."
  54 echo
  55 echo "Formatting suggestion:"
  56 echo
  57 echo -e "------------\n$formatting_changes\n------------"
  58 echo
  59
  60 exit 1