1
#! /bin/bash
2
# simple wrapper script to execute clang-tidy
3
 
4
set -euo pipefail
5
 
6
CLANG_TIDY_BIN=$1
7
shift
8
 
9
OUTPUT=$1
10
shift
11
 
12
PWD=$(pwd)/
13
ESCAPED_PWD=$(sed 's/[\*\.&/]/\\&/g' <<< "$PWD")
14
 
15
# Interestingly clang-tidy prints real errors to stdout, but system message like
16
# `4 warnings generated` when they are filtered out, to stderr.
17
# Save stderr and print only on errors to reduce the clutter.
18
CLANG_TIDY_STDERR=$(mktemp)
19
 
20
set +e
21
"${CLANG_TIDY_BIN}" "$@" 2>"$CLANG_TIDY_STDERR" | \
22
  # clang-tidy insists on printing absolute file paths, chop current dir off
23
  sed "s/$ESCAPED_PWD//g"
24
CLANG_TIDY_EXIT_CODE=$?
25
set -e
26
 
27
if [[ $CLANG_TIDY_EXIT_CODE -ne 0 ]]; then
28
  cat "$CLANG_TIDY_STDERR" >&2
29
  rm -f "$CLANG_TIDY_STDERR"
30
  exit $CLANG_TIDY_EXIT_CODE
31
fi
32
 
33
rm -f "$CLANG_TIDY_STDERR"
34
 
35
# bazel needs run action to produce some output, touch the file
36
touch "$OUTPUT"