util/travis/lint.sh

   1 #! /bin/bash
   2 function perform_lint() {
   3         echo "Performing LINT..."
   4         if hash clang-format-3.9 2>/dev/null; then
   5                 CLANG_FORMAT=clang-format-3.9
   6         else
   7                 CLANG_FORMAT=clang-format
   8         fi
   9         CLANG_FORMAT_WHITELIST="util/travis/clang-format-whitelist.txt"
  10
  11         if [ "$TRAVIS_EVENT_TYPE" = "pull_request" ]; then
  12                 # Get list of every file modified in this pull request
  13                 files_to_lint="$(git diff --name-only --diff-filter=ACMRTUXB $TRAVIS_COMMIT_RANGE | grep '^src/[^.]*[.]\(cpp\|h\)$' | true)"
  14         else
  15                 # Check everything for branch pushes
  16                 files_to_lint="$(find src/ -name '*.cpp' -or -name '*.h')"
  17         fi
  18
  19         local errorcount=0
  20         local fail=0
  21         for f in ${files_to_lint}; do
  22                 d=$(diff -u "$f" <(${CLANG_FORMAT} "$f") || true)
  23
  24                 if ! [ -z "$d" ]; then
  25                         whitelisted=$(egrep -c "^${f}" "${CLANG_FORMAT_WHITELIST}")
  26
  27                         # If file is not whitelisted, mark a failure
  28                         if [ ${whitelisted} -eq 0 ]; then
  29                                 errorcount=$((errorcount+1))
  30
  31                                 printf "The file %s is not compliant with the coding style" "$f"
  32                                 if [ ${errorcount} -gt 50 ]; then
  33                                         printf "\nToo many errors encountered previously, this diff is hidden.\n"
  34                                 else
  35                                         printf ":\n%s\n" "$d"
  36                                 fi
  37
  38                                 fail=1
  39                         fi
  40                 fi
  41         done
  42
  43         if [ "$fail" = 1 ]; then
  44                 echo "LINT reports failure."
  45                 exit 1
  46         fi
  47
  48         echo "LINT OK"
  49 }
  50