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Add a lint check for trailing whitespace.

This adds a new CHECK_DOC check that looks for newly introduced trailing
whitespace. Existing trailing whitespace (of which there is plenty!)
will not trigger an error.

This is written in a generic way so that new lint-*.sh scripts can be
added to contrib/devtools/, as I'd like to contribute additional lint
checks in the future.
0.16
Evan Klitzke 7 years ago committed by MeshCollider
parent
commit
dd365612fd
  1. 1
      .travis.yml
  2. 22
      contrib/devtools/lint-all.sh
  3. 47
      contrib/devtools/lint-whitespace.sh

1
.travis.yml

@ -49,6 +49,7 @@ before_script:
- if [ "$CHECK_DOC" = 1 -a "$TRAVIS_EVENT_TYPE" = "pull_request" ]; then contrib/devtools/commit-script-check.sh $TRAVIS_COMMIT_RANGE; fi - if [ "$CHECK_DOC" = 1 -a "$TRAVIS_EVENT_TYPE" = "pull_request" ]; then contrib/devtools/commit-script-check.sh $TRAVIS_COMMIT_RANGE; fi
- if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/check-doc.py; fi - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/check-doc.py; fi
- if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/check-rpc-mappings.py .; fi - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/check-rpc-mappings.py .; fi
- if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/lint-all.sh; fi
- unset CC; unset CXX - unset CC; unset CXX
- mkdir -p depends/SDKs depends/sdk-sources - mkdir -p depends/SDKs depends/sdk-sources
- if [ -n "$OSX_SDK" -a ! -f depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz ]; then curl --location --fail $SDK_URL/MacOSX${OSX_SDK}.sdk.tar.gz -o depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz; fi - if [ -n "$OSX_SDK" -a ! -f depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz ]; then curl --location --fail $SDK_URL/MacOSX${OSX_SDK}.sdk.tar.gz -o depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz; fi

22
contrib/devtools/lint-all.sh

@ -0,0 +1,22 @@
#!/bin/bash
#
# Copyright (c) 2017 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
#
# This script runs all contrib/devtools/lint-*.sh files, and fails if any exit
# with a non-zero status code.
set -u
SCRIPTDIR=$(dirname "${BASH_SOURCE[0]}")
LINTALL=$(basename "${BASH_SOURCE[0]}")
for f in "${SCRIPTDIR}"/lint-*.sh; do
if [ "$(basename "$f")" != "$LINTALL" ]; then
if ! "$f"; then
echo "^---- failure generated from $f"
exit 1
fi
fi
done

47
contrib/devtools/lint-whitespace.sh

@ -0,0 +1,47 @@
#!/bin/bash
#
# Copyright (c) 2017 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
#
# Check for new lines in diff that introduce trailing whitespace.
# We can't run this check unless we know the commit range for the PR.
if [ -z "${TRAVIS_COMMIT_RANGE}" ]; then
exit 0
fi
showdiff() {
if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" --; then
echo "Failed to get a diff"
exit 1
fi
}
# Do a first pass, and if no trailing whitespace was found then exit early.
if ! showdiff | grep -E -q '^\+.*\s+$'; then
exit
fi
echo "This diff appears to have added new lines with trailing whitespace."
echo "The following changes were suspected:"
FILENAME=""
SEEN=0
while read -r line; do
if [[ "$line" =~ ^diff ]]; then
FILENAME="$line"
SEEN=0
else
if [ "$SEEN" -eq 0 ]; then
# The first time a file is seen with trailing whitespace, we print the
# filename (preceded by a newline).
echo
echo "$FILENAME"
SEEN=1
fi
echo "$line"
fi
done < <(showdiff | grep -E '^(diff --git |\+.*\s+$)')
exit 1
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