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14475e2dcd
40b17f5f9 [scripts] lint-whitespace: use perl instead of grep -P (Sjors Provoost)
Pull request description:
MacOS does not support `grep -P` out of the box. This change makes
it easier for developers to check for whitespace problems locally.
Based on [this](https://stackoverflow.com/a/16658690) and [this](https://serverfault.com/a/504387) Stack Exchange answer.
Tested with:
```sh
export TRAVIS_COMMIT_RANGE='fe78c9a...62e0453'
contrib/devtools/lint-whitespace.sh
This diff appears to have added new lines with tab characters instead of spaces.
The following changes were suspected:
diff --git a/src/test/bignum_tests.cpp b/src/test/bignum_tests.cpp
@@ -0,0 +1,110 @@
+ num.setint64(n);
```
Tree-SHA512: 37c342a0ca2580289cf326a278a051a7c21ba918d6b2143fd9987f159fab85f1de3d770fcf532a642cd5d1957afc8595678128196e102dc473924758f133db7f
89 lines
2.7 KiB
Bash
Executable File
89 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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#
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# Copyright (c) 2017 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#
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# Check for new lines in diff that introduce trailing whitespace.
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# We can't run this check unless we know the commit range for the PR.
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if [ -z "${TRAVIS_COMMIT_RANGE}" ]; then
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echo "Cannot run lint-whitespace.sh without commit range. To run locally, use:"
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echo "TRAVIS_COMMIT_RANGE='<commit range>' .lint-whitespace.sh"
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echo "For example:"
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echo "TRAVIS_COMMIT_RANGE='47ba2c3...ee50c9e' .lint-whitespace.sh"
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exit 1
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fi
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showdiff() {
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if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- "." ":(exclude)depends/patches/" ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/"; then
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echo "Failed to get a diff"
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exit 1
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fi
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}
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showcodediff() {
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if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- *.cpp *.h *.md *.py *.sh ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/"; then
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echo "Failed to get a diff"
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exit 1
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fi
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}
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RET=0
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# Check if trailing whitespace was found in the diff.
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if showdiff | grep -E -q '^\+.*\s+$'; then
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echo "This diff appears to have added new lines with trailing whitespace."
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echo "The following changes were suspected:"
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FILENAME=""
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SEEN=0
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while read -r line; do
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if [[ "$line" =~ ^diff ]]; then
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FILENAME="$line"
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SEEN=0
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elif [[ "$line" =~ ^@@ ]]; then
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LINENUMBER="$line"
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else
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if [ "$SEEN" -eq 0 ]; then
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# The first time a file is seen with trailing whitespace, we print the
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# filename (preceded by a newline).
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echo
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echo "$FILENAME"
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echo "$LINENUMBER"
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SEEN=1
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fi
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echo "$line"
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fi
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done < <(showdiff | grep -E '^(diff --git |@@|\+.*\s+$)')
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RET=1
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fi
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# Check if tab characters were found in the diff.
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if showcodediff | perl -nle '$MATCH++ if m{^\+.*\t}; END{exit 1 unless $MATCH>0}' > /dev/null; then
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echo "This diff appears to have added new lines with tab characters instead of spaces."
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echo "The following changes were suspected:"
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FILENAME=""
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SEEN=0
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while read -r line; do
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if [[ "$line" =~ ^diff ]]; then
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FILENAME="$line"
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SEEN=0
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elif [[ "$line" =~ ^@@ ]]; then
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LINENUMBER="$line"
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else
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if [ "$SEEN" -eq 0 ]; then
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# The first time a file is seen with a tab character, we print the
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# filename (preceded by a newline).
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echo
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echo "$FILENAME"
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echo "$LINENUMBER"
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SEEN=1
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fi
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echo "$line"
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fi
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done < <(showcodediff | perl -nle 'print if m{^(diff --git |@@|\+.*\t)}')
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RET=1
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fi
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exit $RET
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