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-rwxr-xr-xtest/lint/lint-whitespace.sh112
1 files changed, 112 insertions, 0 deletions
diff --git a/test/lint/lint-whitespace.sh b/test/lint/lint-whitespace.sh
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index 0000000000..c5d43043d5
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+++ b/test/lint/lint-whitespace.sh
@@ -0,0 +1,112 @@
+#!/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.
+
+while getopts "?" opt; do
+ case $opt in
+ ?)
+ echo "Usage: .lint-whitespace.sh [N]"
+ echo " TRAVIS_COMMIT_RANGE='<commit range>' .lint-whitespace.sh"
+ echo " .lint-whitespace.sh -?"
+ echo "Checks unstaged changes, the previous N commits, or a commit range."
+ echo "TRAVIS_COMMIT_RANGE='47ba2c3...ee50c9e' .lint-whitespace.sh"
+ exit 0
+ ;;
+ esac
+done
+
+if [ -z "${TRAVIS_COMMIT_RANGE}" ]; then
+ if [ "$1" ]; then
+ TRAVIS_COMMIT_RANGE="HEAD~$1...HEAD"
+ else
+ TRAVIS_COMMIT_RANGE="HEAD"
+ fi
+fi
+
+showdiff() {
+ if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- "." ":(exclude)depends/patches/" ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/"; then
+ echo "Failed to get a diff"
+ exit 1
+ fi
+}
+
+showcodediff() {
+ if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- *.cpp *.h *.md *.py *.sh ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/"; then
+ echo "Failed to get a diff"
+ exit 1
+ fi
+}
+
+RET=0
+
+# Check if trailing whitespace was found in the diff.
+if showdiff | grep -E -q '^\+.*\s+$'; then
+ echo "This diff appears to have added new lines with trailing whitespace."
+ echo "The following changes were suspected:"
+ FILENAME=""
+ SEEN=0
+ SEENLN=0
+ while read -r line; do
+ if [[ "$line" =~ ^diff ]]; then
+ FILENAME="$line"
+ SEEN=0
+ elif [[ "$line" =~ ^@@ ]]; then
+ LINENUMBER="$line"
+ SEENLN=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
+ if [ "$SEENLN" -eq 0 ]; then
+ echo "$LINENUMBER"
+ SEENLN=1
+ fi
+ echo "$line"
+ fi
+ done < <(showdiff | grep -E '^(diff --git |@@|\+.*\s+$)')
+ RET=1
+fi
+
+# Check if tab characters were found in the diff.
+if showcodediff | perl -nle '$MATCH++ if m{^\+.*\t}; END{exit 1 unless $MATCH>0}' > /dev/null; then
+ echo "This diff appears to have added new lines with tab characters instead of spaces."
+ echo "The following changes were suspected:"
+ FILENAME=""
+ SEEN=0
+ SEENLN=0
+ while read -r line; do
+ if [[ "$line" =~ ^diff ]]; then
+ FILENAME="$line"
+ SEEN=0
+ elif [[ "$line" =~ ^@@ ]]; then
+ LINENUMBER="$line"
+ SEENLN=0
+ else
+ if [ "$SEEN" -eq 0 ]; then
+ # The first time a file is seen with a tab character, we print the
+ # filename (preceded by a newline).
+ echo
+ echo "$FILENAME"
+ SEEN=1
+ fi
+ if [ "$SEENLN" -eq 0 ]; then
+ echo "$LINENUMBER"
+ SEENLN=1
+ fi
+ echo "$line"
+ fi
+ done < <(showcodediff | perl -nle 'print if m{^(diff --git |@@|\+.*\t)}')
+ RET=1
+fi
+
+exit $RET