lint: convert format strings linter test to python

test/lint/lint-format-strings.py

@@ -0,0 +1,98 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2018-2022 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+
+"""
+Lint format strings: This program checks that the number of arguments passed
+to a variadic format string function matches the number of format specifiers
+in the format string.
+"""
+
+import subprocess
+import re
+import sys
+
+FUNCTION_NAMES_AND_NUMBER_OF_LEADING_ARGUMENTS = [
+    'FatalError,0',
+    'fprintf,1',
+    'tfm::format,1',  # Assuming tfm::::format(std::ostream&, ...
+    'LogConnectFailure,1',
+    'LogPrint,1',
+    'LogPrintf,0',
+    'printf,0',
+    'snprintf,2',
+    'sprintf,1',
+    'strprintf,0',
+    'vfprintf,1',
+    'vprintf,1',
+    'vsnprintf,1',
+    'vsprintf,1',
+    'WalletLogPrintf,0',
+]
+RUN_LINT_FILE = 'test/lint/run-lint-format-strings.py'
+
+def check_doctest():
+    command = [
+        'python3',
+        '-m',
+        'doctest',
+        RUN_LINT_FILE,
+    ]
+    try:
+        subprocess.run(command, check = True)
+    except subprocess.CalledProcessError:
+        sys.exit(1)
+
+def get_matching_files(function_name):
+    command = [
+        'git',
+        'grep',
+        '--full-name',
+        '-l',
+        function_name,
+        '--',
+        '*.c',
+        '*.cpp',
+        '*.h',
+    ]
+    try:
+        return subprocess.check_output(command, stderr = subprocess.STDOUT).decode('utf-8').splitlines()
+    except subprocess.CalledProcessError as e:
+        if e.returncode > 1: # return code is 1 when match is empty
+            print(e.output.decode('utf-8'), end='')
+            sys.exit(1)
+        return []
+
+def main():
+    exit_code = 0
+    check_doctest()
+    for s in FUNCTION_NAMES_AND_NUMBER_OF_LEADING_ARGUMENTS:
+        function_name, skip_arguments = s.split(',')
+        matching_files = get_matching_files(function_name)
+
+        matching_files_filtered = []
+        for matching_file in matching_files:
+            if not re.search('^src/(leveldb|secp256k1|minisketch|tinyformat|univalue|test/fuzz/strprintf.cpp)', matching_file):
+                matching_files_filtered.append(matching_file)
+        matching_files_filtered.sort()
+
+        run_lint_args = [
+                    RUN_LINT_FILE,
+                    '--skip-arguments',
+                    skip_arguments,
+                    function_name,
+        ]
+        run_lint_args.extend(matching_files_filtered)
+
+        try:
+            subprocess.run(run_lint_args, check = True)
+        except subprocess.CalledProcessError:
+            exit_code = 1
+
+    sys.exit(exit_code)
+
+if __name__ == '__main__':
+    main()

test/lint/lint-format-strings.sh

@@ -1,44 +0,0 @@
-#!/usr/bin/env bash
-#
-# Copyright (c) 2018-2020 The Bitcoin Core developers
-# Distributed under the MIT software license, see the accompanying
-# file COPYING or http://www.opensource.org/licenses/mit-license.php.
-#
-# Lint format strings: This program checks that the number of arguments passed
-# to a variadic format string function matches the number of format specifiers
-# in the format string.
-
-export LC_ALL=C
-
-FUNCTION_NAMES_AND_NUMBER_OF_LEADING_ARGUMENTS=(
-    "FatalError,0"
-    "fprintf,1"
-    "tfm::format,1" # Assuming tfm::::format(std::ostream&, ...
-    "LogConnectFailure,1"
-    "LogPrint,1"
-    "LogPrintf,0"
-    "printf,0"
-    "snprintf,2"
-    "sprintf,1"
-    "strprintf,0"
-    "vfprintf,1"
-    "vprintf,1"
-    "vsnprintf,1"
-    "vsprintf,1"
-    "WalletLogPrintf,0"
-)
-
-EXIT_CODE=0
-if ! python3 -m doctest "test/lint/run-lint-format-strings.py"; then
-    EXIT_CODE=1
-fi
-for S in "${FUNCTION_NAMES_AND_NUMBER_OF_LEADING_ARGUMENTS[@]}"; do
-    IFS="," read -r FUNCTION_NAME SKIP_ARGUMENTS <<< "${S}"
-    for MATCHING_FILE in $(git grep --full-name -l "${FUNCTION_NAME}" -- "*.c" "*.cpp" "*.h" | sort | grep -vE "^src/(leveldb|secp256k1|minisketch|tinyformat|univalue|test/fuzz/strprintf.cpp)"); do
-        MATCHING_FILES+=("${MATCHING_FILE}")
-    done
-    if ! "test/lint/run-lint-format-strings.py" --skip-arguments "${SKIP_ARGUMENTS}" "${FUNCTION_NAME}" "${MATCHING_FILES[@]}"; then
-        EXIT_CODE=1
-    fi
-done
-exit ${EXIT_CODE}