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         echo "LINT: Using binary $CLANG_FORMAT"
  10         CLANG_FORMAT_WHITELIST="util/travis/clang-format-whitelist.txt"
  11
  12         if [ "$TRAVIS_EVENT_TYPE" = "pull_request" ]; then
  13                 # Get list of every file modified in this pull request
  14                 files_to_lint="$(git diff --name-only --diff-filter=ACMRTUXB $TRAVIS_COMMIT_RANGE | grep '^src/[^.]*[.]\(cpp\|h\)$' | true)"
  15         else
  16                 # Check everything for branch pushes
  17                 files_to_lint="$(find src/ -name '*.cpp' -or -name '*.h')"
  18         fi
  19
  20         local errorcount=0
  21         local fail=0
  22         for f in ${files_to_lint}; do
  23                 d=$(diff -u "$f" <(${CLANG_FORMAT} "$f") || true)
  24
  25                 if ! [ -z "$d" ]; then
  26                         whitelisted=$(awk '$1 == "'$f'" { print 1 }' "$CLANG_FORMAT_WHITELIST")
  27
  28                         # If file is not whitelisted, mark a failure
  29                         if [ -z ${whitelisted} ]; then
  30                                 errorcount=$((errorcount+1))
  31
  32                                 printf "The file %s is not compliant with the coding style" "$f"
  33                                 if [ ${errorcount} -gt 50 ]; then
  34                                         printf "\nToo many errors encountered previously, this diff is hidden.\n"
  35                                 else
  36                                         printf ":\n%s\n" "$d"
  37                                 fi
  38
  39                                 fail=1
  40                         fi
  41                 fi
  42         done
  43
  44         if [ "$fail" = 1 ]; then
  45                 echo "LINT reports failure."
  46                 exit 1
  47         fi
  48
  49         echo "LINT OK"
  50 }
  51