ClickHouse/utils/check-style/check-style
Max Kainov 681bd28c87 CI: make style check fast
#do_not_test
2024-03-09 20:57:23 +00:00

450 lines
24 KiB
Bash
Executable File
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

#!/usr/bin/env bash
# For code formatting we have clang-format.
#
# But it's not sane to apply clang-format for whole code base,
# because it sometimes makes worse for properly formatted files.
#
# It's only reasonable to blindly apply clang-format only in cases
# when the code is likely to be out of style.
#
# For this purpose we have a script that will use very primitive heuristics
# (simple regexps) to check if the code is likely to have basic style violations.
# and then to run formatter only for the specified files.
LC_ALL="en_US.UTF-8"
ROOT_PATH=$(git rev-parse --show-toplevel)
EXCLUDE_DIRS='build/|integration/|widechar_width/|glibc-compatibility/|poco/|memcpy/|consistent-hashing|benchmark|tests/.*.cpp|utils/keeper-bench/example.yaml'
# From [1]:
# But since array_to_string_internal() in array.c still loops over array
# elements and concatenates them into a string, it's probably not more
# efficient than the looping solutions proposed, but it's more readable.
#
# [1]: https://stackoverflow.com/a/15394738/328260
function in_array()
{
local IFS="|"
local value=$1 && shift
[[ "${IFS}${*}${IFS}" =~ "${IFS}${value}${IFS}" ]]
}
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' 2>/dev/null |
grep -vP $EXCLUDE_DIRS |
xargs grep $@ -P '((class|struct|namespace|enum|if|for|while|else|throw|switch).*|\)(\s*const)?(\s*override)?\s*)\{$|\s$|^ {1,3}[^\* ]\S|\t|^\s*(if|else if|if constexpr|else if constexpr|for|while|catch|switch)\(|\( [^\s\\]|\S \)' |
# a curly brace not in a new line, but not for the case of C++11 init or agg. initialization | trailing whitespace | number of ws not a multiple of 4, but not in the case of comment continuation | missing whitespace after for/if/while... before opening brace | whitespaces inside braces
grep -v -P '(//|:\s+\*|\$\(\()| \)"'
# single-line comment | continuation of a multiline comment | a typical piece of embedded shell code | something like ending of raw string literal
# Tabs
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' 2>/dev/null |
grep -vP $EXCLUDE_DIRS |
xargs grep $@ -F $'\t'
# // namespace comments are unneeded
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' 2>/dev/null |
grep -vP $EXCLUDE_DIRS |
xargs grep $@ -P '}\s*//+\s*namespace\s*'
# Broken symlinks
find -L $ROOT_PATH -type l 2>/dev/null | grep -v contrib && echo "^ Broken symlinks found"
# Unused/Undefined/Duplicates ErrorCodes/ProfileEvents/CurrentMetrics
declare -A EXTERN_TYPES
EXTERN_TYPES[ErrorCodes]=int
EXTERN_TYPES[ProfileEvents]=Event
EXTERN_TYPES[CurrentMetrics]=Metric
EXTERN_TYPES_EXCLUDES=(
ProfileEvents::global_counters
ProfileEvents::Event
ProfileEvents::Count
ProfileEvents::Counters
ProfileEvents::end
ProfileEvents::increment
ProfileEvents::incrementForLogMessage
ProfileEvents::getName
ProfileEvents::Type
ProfileEvents::TypeEnum
ProfileEvents::dumpToMapColumn
ProfileEvents::getProfileEvents
ProfileEvents::ThreadIdToCountersSnapshot
ProfileEvents::LOCAL_NAME
ProfileEvents::keeper_profile_events
ProfileEvents::CountersIncrement
CurrentMetrics::add
CurrentMetrics::sub
CurrentMetrics::get
CurrentMetrics::set
CurrentMetrics::end
CurrentMetrics::Increment
CurrentMetrics::Metric
CurrentMetrics::values
CurrentMetrics::Value
CurrentMetrics::keeper_metrics
ErrorCodes::ErrorCode
ErrorCodes::getName
ErrorCodes::increment
ErrorCodes::end
ErrorCodes::values
ErrorCodes::values[i]
ErrorCodes::getErrorCodeByName
)
for extern_type in ${!EXTERN_TYPES[@]}; do
type_of_extern=${EXTERN_TYPES[$extern_type]}
allowed_chars='[_A-Za-z]+'
# Unused
# NOTE: to fix automatically, replace echo with:
# sed -i "/extern const $type_of_extern $val/d" $file
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' | {
# NOTE: the check is pretty dumb and distinguish only by the type_of_extern,
# and this matches with zkutil::CreateMode
grep -v -e 'src/Common/ZooKeeper/Types.h' -e 'src/Coordination/KeeperConstants.cpp'
} | {
grep -vP $EXCLUDE_DIRS | xargs grep -l -P "extern const $type_of_extern $allowed_chars"
} | while read file; do
grep -P "extern const $type_of_extern $allowed_chars;" $file | sed -r -e "s/^.*?extern const $type_of_extern ($allowed_chars);.*?$/\1/" | while read val; do
if ! grep -q "$extern_type::$val" $file; then
# Excludes for SOFTWARE_EVENT/HARDWARE_EVENT/CACHE_EVENT in ThreadProfileEvents.cpp
if [[ ! $extern_type::$val =~ ProfileEvents::Perf.* ]]; then
echo "$extern_type::$val is defined but not used in file $file"
fi
fi
done
done
# Undefined
# NOTE: to fix automatically, replace echo with:
# ( grep -q -F 'namespace $extern_type' $file && \
# sed -i -r "0,/(\s*)extern const $type_of_extern [$allowed_chars]+/s//\1extern const $type_of_extern $val;\n&/" $file || \
# awk '{ print; if (ns == 1) { ns = 2 }; if (ns == 2) { ns = 0; print "namespace $extern_type\n{\n extern const $type_of_extern '$val';\n}" } }; /namespace DB/ { ns = 1; };' < $file > ${file}.tmp && mv ${file}.tmp $file )
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' | {
grep -vP $EXCLUDE_DIRS | xargs grep -l -P "$extern_type::$allowed_chars"
} | while read file; do
grep -P "$extern_type::$allowed_chars" $file | grep -P -v '^\s*//' | sed -r -e "s/^.*?$extern_type::($allowed_chars).*?$/\1/" | while read val; do
if ! grep -q "extern const $type_of_extern $val" $file; then
if ! in_array "$extern_type::$val" "${EXTERN_TYPES_EXCLUDES[@]}"; then
echo "$extern_type::$val is used in file $file but not defined"
fi
fi
done
done
# Duplicates
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' | {
grep -vP $EXCLUDE_DIRS | xargs grep -l -P "$extern_type::$allowed_chars"
} | while read file; do
grep -P "extern const $type_of_extern $allowed_chars;" $file | sort | uniq -c | grep -v -P ' +1 ' && echo "Duplicate $extern_type in file $file"
done
done
# Three or more consecutive empty lines
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
while read file; do awk '/^$/ { ++i; if (i > 2) { print "More than two consecutive empty lines in file '$file'" } } /./ { i = 0 }' $file; done
# Broken XML files (requires libxml2-utils)
find $ROOT_PATH/{src,base,programs,utils} -name '*.xml' |
grep -vP $EXCLUDE_DIRS |
xargs xmllint --noout --nonet
find $ROOT_PATH -not -path $ROOT_PATH'/contrib*' \( -name '*.yaml' -or -name '*.yml' \) -type f |
grep -vP $EXCLUDE_DIRS |
xargs yamllint --config-file=$ROOT_PATH/.yamllint
# Tests should not be named with "fail" in their names. It makes looking at the results less convenient.
find $ROOT_PATH/tests/queries -iname '*fail*' |
grep . && echo 'Tests should not be named with "fail" in their names. It makes looking at the results less convenient when you search for "fail" substring in browser.'
# Queries to system.query_log/system.query_thread_log should have current_database = currentDatabase() condition
# NOTE: it is not that accurate, but at least something.
tests_with_query_log=( $(
find $ROOT_PATH/tests/queries -iname '*.sql' -or -iname '*.sh' -or -iname '*.py' -or -iname '*.j2' |
xargs grep --with-filename -e system.query_log -e system.query_thread_log | cut -d: -f1 | sort -u
) )
for test_case in "${tests_with_query_log[@]}"; do
grep -qE current_database.*currentDatabase "$test_case" || {
grep -qE 'current_database.*\$CLICKHOUSE_DATABASE' "$test_case"
} || echo "Queries to system.query_log/system.query_thread_log does not have current_database = currentDatabase() condition in $test_case"
done
grep -iE 'SYSTEM STOP MERGES;?$' -R $ROOT_PATH/tests/queries && echo "Merges cannot be disabled globally in fast/stateful/stateless tests, because it will break concurrently running queries"
# There shouldn't be large jumps between test numbers (since they should be consecutive)
max_diff=$(
find $ROOT_PATH/tests/queries -iname '*.sql' -or -iname '*.sh' -or -iname '*.py' -or -iname '*.j2' |
grep -oP '\d+\D+\K\d+' | sort -n -u | awk 's{print ($0-s) " diff " s " and " $0 }{s=$0}' | sort -n | tail -n 1
)
max_diff_value=( $(echo $max_diff) )
if [[ $max_diff_value -ge 100 ]];
then
echo "Too big of a difference between test numbers: $max_diff"
fi
# Queries to:
tables_with_database_column=(
system.tables
system.parts
system.detached_parts
system.parts_columns
system.columns
system.projection_parts
system.mutations
)
# should have database = currentDatabase() condition
#
# NOTE: it is not that accuate, but at least something.
tests_with_database_column=( $(
find $ROOT_PATH/tests/queries -iname '*.sql' -or -iname '*.sh' -or -iname '*.py' -or -iname '*.j2' |
xargs grep --with-filename $(printf -- "-e %s " "${tables_with_database_column[@]}") |
grep -v -e ':--' -e ':#' |
cut -d: -f1 | sort -u
) )
for test_case in "${tests_with_database_column[@]}"; do
grep -qE database.*currentDatabase "$test_case" || {
grep -qE 'database.*\$CLICKHOUSE_DATABASE' "$test_case"
} || {
# explicit database
grep -qE "database[ ]*=[ ]*'" "$test_case"
} || {
echo "Queries to ${tables_with_database_column[*]} does not have database = currentDatabase()/\$CLICKHOUSE_DATABASE condition in $test_case"
}
done
# Queries with ReplicatedMergeTree
# NOTE: it is not that accuate, but at least something.
tests_with_replicated_merge_tree=( $(
find $ROOT_PATH/tests/queries -iname '*.sql' -or -iname '*.sh' -or -iname '*.py' -or -iname '*.j2' |
xargs grep --with-filename -e "Replicated.*MergeTree[ ]*(.*" | cut -d: -f1 | sort -u
) )
for test_case in "${tests_with_replicated_merge_tree[@]}"; do
case "$test_case" in
*.gen.*)
;;
*.sh)
test_case_zk_prefix="\(\$CLICKHOUSE_TEST_ZOOKEEPER_PREFIX\|{database}\)"
grep -q -e "Replicated.*MergeTree[ ]*(.*$test_case_zk_prefix" "$test_case" || echo "Replicated.*MergeTree should contain '$test_case_zk_prefix' in zookeeper path to avoid overlaps ($test_case)"
;;
*.sql|*.sql.j2)
test_case_zk_prefix="\({database}\|currentDatabase()\|{uuid}\|{default_path_test}\)"
grep -q -e "Replicated.*MergeTree[ ]*(.*$test_case_zk_prefix" "$test_case" || echo "Replicated.*MergeTree should contain '$test_case_zk_prefix' in zookeeper path to avoid overlaps ($test_case)"
;;
*.py)
# Right now there is not such tests anyway
echo "No ReplicatedMergeTree style check for *.py ($test_case)"
;;
esac
done
# All the submodules should be from https://github.com/
find $ROOT_PATH -name '.gitmodules' | while read i; do grep -F 'url = ' $i | grep -v -F 'https://github.com/' && echo 'All the submodules should be from https://github.com/'; done
# There shouldn't be any code snippets under GPL or LGPL
find $ROOT_PATH/{src,base,programs} -name '*.h' -or -name '*.cpp' 2>/dev/null | xargs grep -i -F 'General Public License' && echo "There shouldn't be any code snippets under GPL or LGPL"
# There shouldn't be any docker containers outside docker directory
find $ROOT_PATH -not -path $ROOT_PATH'/tests/ci*' -not -path $ROOT_PATH'/docker*' -not -path $ROOT_PATH'/contrib*' -name Dockerfile -type f 2>/dev/null | xargs --no-run-if-empty -n1 echo "Please move Dockerfile to docker directory:"
# There shouldn't be any docker compose files outside docker directory
find $ROOT_PATH -name '*compose*.yml' -type f -not -path $ROOT_PATH'/docker' -not -path $ROOT_PATH'/tests/integration*' -not -path $ROOT_PATH'/docker*' -not -path $ROOT_PATH'/contrib*' 2>/dev/null | grep -vP $EXCLUDE_DIRS | xargs --no-run-if-empty grep -l "version:" | xargs --no-run-if-empty -n1 echo "Please move docker compose to the 'docker' or 'tests' directory:"
# Check that every header file has #pragma once in first line
find $ROOT_PATH/{src,programs,utils} -name '*.h' |
grep -vP $EXCLUDE_DIRS |
while read file; do [[ $(head -n1 $file) != '#pragma once' ]] && echo "File $file must have '#pragma once' in first line"; done
# Check for executable bit on non-executable files
find $ROOT_PATH/{src,base,programs,utils,tests,docs,cmake} '(' -name '*.cpp' -or -name '*.h' -or -name '*.sql' -or -name '*.j2' -or -name '*.xml' -or -name '*.reference' -or -name '*.txt' -or -name '*.md' ')' -and -executable | grep -P '.' && echo "These files should not be executable."
# Check for BOM
find $ROOT_PATH/{src,base,programs,utils,tests,docs,cmake} -name '*.md' -or -name '*.cpp' -or -name '*.h' | xargs grep -l -F $'\xEF\xBB\xBF' | grep -P '.' && echo "Files should not have UTF-8 BOM"
find $ROOT_PATH/{src,base,programs,utils,tests,docs,cmake} -name '*.md' -or -name '*.cpp' -or -name '*.h' | xargs grep -l -F $'\xFF\xFE' | grep -P '.' && echo "Files should not have UTF-16LE BOM"
find $ROOT_PATH/{src,base,programs,utils,tests,docs,cmake} -name '*.md' -or -name '*.cpp' -or -name '*.h' | xargs grep -l -F $'\xFE\xFF' | grep -P '.' && echo "Files should not have UTF-16BE BOM"
# Too many exclamation marks
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -F '!!!' | grep -P '.' && echo "Too many exclamation marks (looks dirty, unconfident)."
# Exclamation mark in a message
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -F '!",' | grep -P '.' && echo "No need for an exclamation mark (looks dirty, unconfident)."
# Trailing whitespaces
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -n -P ' $' | grep -n -P '.' && echo "^ Trailing whitespaces."
# Forbid stringstream because it's easy to use them incorrectly and hard to debug possible issues
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -P 'std::[io]?stringstream' | grep -v "STYLE_CHECK_ALLOW_STD_STRING_STREAM" && echo "Use WriteBufferFromOwnString or ReadBufferFromString instead of std::stringstream"
# Forbid std::cerr/std::cout in src (fine in programs/utils)
std_cerr_cout_excludes=(
/examples/
/tests/
_fuzzer
# DUMP()
base/base/iostream_debug_helpers.h
# OK
src/Common/ProgressIndication.cpp
# only under #ifdef DBMS_HASH_MAP_DEBUG_RESIZES, that is used only in tests
src/Common/HashTable/HashTable.h
# SensitiveDataMasker::printStats()
src/Common/SensitiveDataMasker.cpp
# StreamStatistics::print()
src/Compression/LZ4_decompress_faster.cpp
# ContextSharedPart with subsequent std::terminate()
src/Interpreters/Context.cpp
# IProcessor::dump()
src/Processors/IProcessor.cpp
src/Client/ClientBase.cpp
src/Client/LineReader.cpp
src/Client/QueryFuzzer.cpp
src/Client/Suggest.cpp
src/Bridge/IBridge.cpp
src/Daemon/BaseDaemon.cpp
src/Loggers/Loggers.cpp
)
sources_with_std_cerr_cout=( $(
find $ROOT_PATH/{src,base} -name '*.h' -or -name '*.cpp' | \
grep -vP $EXCLUDE_DIRS | \
grep -F -v $(printf -- "-e %s " "${std_cerr_cout_excludes[@]}") | \
xargs grep -F --with-filename -e std::cerr -e std::cout | cut -d: -f1 | sort -u
) )
# Exclude comments
for src in "${sources_with_std_cerr_cout[@]}"; do
# suppress stderr, since it may contain warning for #pargma once in headers
if gcc -fpreprocessed -dD -E "$src" 2>/dev/null | grep -F -q -e std::cerr -e std::cout; then
echo "$src: uses std::cerr/std::cout"
fi
done
# Queries with event_date should have yesterday() not today()
#
# NOTE: it is not that accuate, but at least something.
tests_with_event_time_date=( $(
find $ROOT_PATH/tests/queries -iname '*.sql' -or -iname '*.sh' -or -iname '*.py' -or -iname '*.j2' |
grep -vP $EXCLUDE_DIRS |
xargs grep --with-filename -e event_time -e event_date | cut -d: -f1 | sort -u
) )
for test_case in "${tests_with_event_time_date[@]}"; do
cat "$test_case" | tr '\n' ' ' | grep -q -i -e 'WHERE.*event_date[ ]*=[ ]*today()' -e 'WHERE.*event_date[ ]*=[ ]*today()' && {
echo "event_time/event_date should be filtered using >=yesterday() in $test_case (to avoid flakiness)"
}
done
expect_tests=( $(find $ROOT_PATH/tests/queries -name '*.expect') )
for test_case in "${expect_tests[@]}"; do
pattern="^exp_internal -f \$env(CLICKHOUSE_TMP)/\$basename.debuglog 0$"
grep -q "$pattern" "$test_case" || echo "Missing '$pattern' in '$test_case'"
if grep -q "^spawn.*CLICKHOUSE_CLIENT_BINARY$" "$test_case"; then
pattern="^spawn.*CLICKHOUSE_CLIENT_BINARY.*--history_file$"
grep -q "$pattern" "$test_case" || echo "Missing '$pattern' in '$test_case'"
fi
# Otherwise expect_after/expect_before will not bail without stdin attached
# (and actually this is a hack anyway, correct way is to use $any_spawn_id)
pattern="-i \$any_spawn_id timeout"
grep -q -- "$pattern" "$test_case" || echo "Missing '$pattern' in '$test_case'"
pattern="-i \$any_spawn_id eof"
grep -q -- "$pattern" "$test_case" || echo "Missing '$pattern' in '$test_case'"
done
# Conflict markers
find $ROOT_PATH/{src,base,programs,utils,tests,docs,cmake} -name '*.md' -or -name '*.cpp' -or -name '*.h' |
xargs grep -P '^(<<<<<<<|=======|>>>>>>>)$' | grep -P '.' && echo "Conflict markers are found in files"
# Forbid subprocess.check_call(...) in integration tests because it does not provide enough information on errors
find $ROOT_PATH'/tests/integration' -name '*.py' |
xargs grep -F 'subprocess.check_call' | grep -v "STYLE_CHECK_ALLOW_SUBPROCESS_CHECK_CALL" && echo "Use helpers.cluster.run_and_check or subprocess.run instead of subprocess.check_call to print detailed info on error"
# Forbid non-unique error codes
if [[ "$(grep -Po "M\([0-9]*," $ROOT_PATH/src/Common/ErrorCodes.cpp | wc -l)" != "$(grep -Po "M\([0-9]*," $ROOT_PATH/src/Common/ErrorCodes.cpp | sort | uniq | wc -l)" ]]
then
echo "ErrorCodes.cpp contains non-unique error codes"
fi
# Check that there is no system-wide libraries/headers in use.
#
# NOTE: it is better to override find_path/find_library in cmake, but right now
# it is not possible, see [1] for the reference.
#
# [1]: git grep --recurse-submodules -e find_library -e find_path contrib
if git grep -e find_path -e find_library -- :**CMakeLists.txt; then
echo "There is find_path/find_library usage. ClickHouse should use everything bundled. Consider adding one more contrib module."
fi
# Forbid files that differ only by character case
find $ROOT_PATH | sort -f | uniq -i -c | awk '{ if ($1 > 1) print }'
# Forbid std::filesystem::is_symlink and std::filesystem::read_symlink, because it's easy to use them incorrectly
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -P '::(is|read)_symlink' | grep -v "STYLE_CHECK_ALLOW_STD_FS_SYMLINK" && echo "Use DB::FS::isSymlink and DB::FS::readSymlink instead"
# Forbid __builtin_unreachable(), because it's hard to debug when it becomes reachable
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -P '__builtin_unreachable' && echo "Use UNREACHABLE() from defines.h instead"
# Forbid mt19937() and random_device() which are outdated and slow
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -P '(std::mt19937|std::mersenne_twister_engine|std::random_device)' && echo "Use pcg64_fast (from pcg_random.h) and randomSeed (from Common/randomSeed.h) instead"
# Require checking return value of close(),
# since it can hide fd misuse and break other places.
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -e ' close(.*fd' -e ' ::close(' | grep -v = && echo "Return value of close() should be checked"
# Check for existence of __init__.py files
for i in "${ROOT_PATH}"/tests/integration/test_*; do FILE="${i}/__init__.py"; [ ! -f "${FILE}" ] && echo "${FILE} should exist for every integration test"; done
# A small typo can lead to debug code in release builds, see https://github.com/ClickHouse/ClickHouse/pull/47647
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' | xargs grep -l -F '#ifdef NDEBUG' | xargs -I@FILE awk '/#ifdef NDEBUG/ { inside = 1; dirty = 1 } /#endif/ { if (inside && dirty) { print "File @FILE has suspicious #ifdef NDEBUG, possibly confused with #ifndef NDEBUG" }; inside = 0 } /#else/ { dirty = 0 }' @FILE
# If a user is doing dynamic or typeid cast with a pointer, and immediately dereferencing it, it is unsafe.
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' | xargs grep --line-number -P '(dynamic|typeid)_cast<[^>]+\*>\([^\(\)]+\)->' | grep -P '.' && echo "It's suspicious when you are doing a dynamic_cast or typeid_cast with a pointer and immediately dereferencing it. Use references instead of pointers or check a pointer to nullptr."
# The stateful directory should only contain the tests that depend on the test dataset (hits or visits).
find $ROOT_PATH/tests/queries/1_stateful -name '*.sql' -or -name '*.sh' | grep -v '00076_system_columns_bytes' | xargs -I{} bash -c 'grep -q -P "hits|visits" "{}" || echo "The test {} does not depend on the test dataset (hits or visits table) and should be located in the 0_stateless directory. You can also add an exception to the check-style script."'
# Check for bad punctuation: whitespace before comma.
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' | xargs grep -P --line-number '\w ,' | grep -v 'bad punctuation is ok here' && echo "^ There is bad punctuation: whitespace before comma. You should write it like this: 'Hello, world!'"
# Check usage of std::regex which is too bloated and slow.
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' | xargs grep -P --line-number 'std::regex' | grep -P '.' && echo "^ Please use re2 instead of std::regex"
# Cyrillic characters hiding inside Latin.
find $ROOT_PATH/{src,programs,utils} -name '*.h' -or -name '*.cpp' | xargs grep -P --line-number '[a-zA-Z][а-яА-ЯёЁ]|[а-яА-ЯёЁ][a-zA-Z]' && echo "^ Cyrillic characters found in unexpected place."
# Orphaned header files.
join -v1 <(find $ROOT_PATH/{src,programs,utils} -name '*.h' -printf '%f\n' | sort | uniq) <(find $ROOT_PATH/{src,programs,utils} -name '*.cpp' -or -name '*.c' -or -name '*.h' -or -name '*.S' | xargs grep --no-filename -o -P '[\w-]+\.h' | sort | uniq) |
grep . && echo '^ Found orphan header files.'
# Don't allow dynamic compiler check with CMake, because we are using hermetic, reproducible, cross-compiled, static (TLDR, good) builds.
ls -1d $ROOT_PATH/contrib/*-cmake | xargs -I@ find @ -name 'CMakeLists.txt' -or -name '*.cmake' | xargs grep --with-filename -i -P 'check_c_compiler_flag|check_cxx_compiler_flag|check_c_source_compiles|check_cxx_source_compiles|check_include_file|check_symbol_exists|cmake_push_check_state|cmake_pop_check_state|find_package|CMAKE_REQUIRED_FLAGS|CheckIncludeFile|CheckCCompilerFlag|CheckCXXCompilerFlag|CheckCSourceCompiles|CheckCXXSourceCompiles|CheckCSymbolExists|CheckCXXSymbolExists' | grep -v Rust && echo "^ It's not allowed to have dynamic compiler checks with CMake."
# DOS/Windows newlines
find $ROOT_PATH/{base,src,programs,utils,docs} -name '*.md' -or -name '*.h' -or -name '*.cpp' -or -name '*.js' -or -name '*.py' -or -name '*.html' | xargs grep -l -P '\r$' && echo "^ Files contain DOS/Windows newlines (\r\n instead of \n)."
# Wrong spelling of abbreviations, e.g. SQL is right, Sql is wrong. XMLHttpRequest is very wrong.
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -P 'Sql|Html|Xml|Cpu|Tcp|Udp|Http|Db|Json|Yaml' | grep -v -P 'RabbitMQ|Azure|Aws|aws|Avro|IO/S3' &&
echo "Abbreviations such as SQL, XML, HTTP, should be in all caps. For example, SQL is right, Sql is wrong. XMLHttpRequest is very wrong."
find $ROOT_PATH/{src,base,programs,utils} -name '*.h' -or -name '*.cpp' |
grep -vP $EXCLUDE_DIRS |
xargs grep -F -i 'ErrorCodes::LOGICAL_ERROR, "Logical error:' &&
echo "If an exception has LOGICAL_ERROR code, there is no need to include the text 'Logical error' in the exception message, because then the phrase 'Logical error' will be printed twice."