diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d6f9de3c889f1b63390f4f9d70b1172f7e30177a..fac57b105a353a6377a52d45b96b504fb98a4837 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,7 +4,8 @@ before_script:
   - apt-get update -qq
   - apt-get install -y cmake
   - apt-get install -y lcov
-  - apt-get install -y clang-tidy
+  - apt-get install -y python3
+  - apt-get install -y clang-format clang-tidy clang-tools clang
 # Define the stages of the pipeline
 stages:
   - lint
@@ -14,14 +15,7 @@ stages:
 
 job:codestyling:
   stage: lint
-  script:
-    - mkdir build
-    - cd build
-    - cmake ..
-    - make
-    - make lint
-  only:
-    - master
+  script: python3 run-clang-format.py -r src include tests
 
 
 # Define the job for building the project
diff --git a/cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-2cb89fdd5fe92c478585.json b/cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-2e9568cbc47559f44601.json
similarity index 95%
rename from cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-2cb89fdd5fe92c478585.json
rename to cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-2e9568cbc47559f44601.json
index 2c764ffa649f0787ed3ce2d683f45c2e20fa70a9..ed498df468b3402685cc42999ba5d3d6d337aa25 100644
--- a/cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-2cb89fdd5fe92c478585.json
+++ b/cmake-build-debug/.cmake/api/v1/reply/codemodel-v2-2e9568cbc47559f44601.json
@@ -146,14 +146,14 @@
 				{
 					"directoryIndex" : 0,
 					"id" : "ExampleTests::@6890427a1f51a3e7e1df",
-					"jsonFile" : "target-ExampleTests-Debug-6c6daac53400d70fcacd.json",
+					"jsonFile" : "target-ExampleTests-Debug-725a13db77d4afece0b7.json",
 					"name" : "ExampleTests",
 					"projectIndex" : 0
 				},
 				{
 					"directoryIndex" : 0,
 					"id" : "MINI_PROJECT_TEST_MAINTENANCE::@6890427a1f51a3e7e1df",
-					"jsonFile" : "target-MINI_PROJECT_TEST_MAINTENANCE-Debug-9803cc1a521b498c51fc.json",
+					"jsonFile" : "target-MINI_PROJECT_TEST_MAINTENANCE-Debug-c7678dfee2f86bfbf500.json",
 					"name" : "MINI_PROJECT_TEST_MAINTENANCE",
 					"projectIndex" : 0
 				},
diff --git a/cmake-build-debug/.cmake/api/v1/reply/index-2024-04-02T02-37-26-0933.json b/cmake-build-debug/.cmake/api/v1/reply/index-2024-04-03T15-28-08-0112.json
similarity index 93%
rename from cmake-build-debug/.cmake/api/v1/reply/index-2024-04-02T02-37-26-0933.json
rename to cmake-build-debug/.cmake/api/v1/reply/index-2024-04-03T15-28-08-0112.json
index a8262a666c2b42da755f7fbc8a075b37f53aa367..df129e89fcf2aac14fd7692979401ef97a87c37f 100644
--- a/cmake-build-debug/.cmake/api/v1/reply/index-2024-04-02T02-37-26-0933.json
+++ b/cmake-build-debug/.cmake/api/v1/reply/index-2024-04-03T15-28-08-0112.json
@@ -26,7 +26,7 @@
 	"objects" : 
 	[
 		{
-			"jsonFile" : "codemodel-v2-2cb89fdd5fe92c478585.json",
+			"jsonFile" : "codemodel-v2-2e9568cbc47559f44601.json",
 			"kind" : "codemodel",
 			"version" : 
 			{
@@ -86,7 +86,7 @@
 		},
 		"codemodel-v2" : 
 		{
-			"jsonFile" : "codemodel-v2-2cb89fdd5fe92c478585.json",
+			"jsonFile" : "codemodel-v2-2e9568cbc47559f44601.json",
 			"kind" : "codemodel",
 			"version" : 
 			{
diff --git a/cmake-build-debug/.cmake/api/v1/reply/target-ExampleTests-Debug-6c6daac53400d70fcacd.json b/cmake-build-debug/.cmake/api/v1/reply/target-ExampleTests-Debug-725a13db77d4afece0b7.json
similarity index 98%
rename from cmake-build-debug/.cmake/api/v1/reply/target-ExampleTests-Debug-6c6daac53400d70fcacd.json
rename to cmake-build-debug/.cmake/api/v1/reply/target-ExampleTests-Debug-725a13db77d4afece0b7.json
index 1aad3e88cedd4dc77321cf0151d9a9e2571cea17..a9319fc682b3b099ab9607d12c931edd352a0316 100644
--- a/cmake-build-debug/.cmake/api/v1/reply/target-ExampleTests-Debug-6c6daac53400d70fcacd.json
+++ b/cmake-build-debug/.cmake/api/v1/reply/target-ExampleTests-Debug-725a13db77d4afece0b7.json
@@ -30,13 +30,13 @@
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+				"line" : 82,
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 				"file" : 0,
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+				"line" : 87,
 				"parent" : 0
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@@ -51,7 +51,7 @@
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 				"command" : 2,
 				"file" : 0,
-				"line" : 74,
+				"line" : 75,
 				"parent" : 0
 			}
 		]
diff --git a/cmake-build-debug/.cmake/api/v1/reply/target-MINI_PROJECT_TEST_MAINTENANCE-Debug-9803cc1a521b498c51fc.json b/cmake-build-debug/.cmake/api/v1/reply/target-MINI_PROJECT_TEST_MAINTENANCE-Debug-c7678dfee2f86bfbf500.json
similarity index 98%
rename from cmake-build-debug/.cmake/api/v1/reply/target-MINI_PROJECT_TEST_MAINTENANCE-Debug-9803cc1a521b498c51fc.json
rename to cmake-build-debug/.cmake/api/v1/reply/target-MINI_PROJECT_TEST_MAINTENANCE-Debug-c7678dfee2f86bfbf500.json
index edb03077a9ecd04ab5e1ace4e2e8ab83688482eb..50a4ca9c4a0ddbdb2df2a41b094dc92afbc7a752 100644
--- a/cmake-build-debug/.cmake/api/v1/reply/target-MINI_PROJECT_TEST_MAINTENANCE-Debug-9803cc1a521b498c51fc.json
+++ b/cmake-build-debug/.cmake/api/v1/reply/target-MINI_PROJECT_TEST_MAINTENANCE-Debug-c7678dfee2f86bfbf500.json
@@ -28,13 +28,13 @@
 			{
 				"command" : 0,
 				"file" : 0,
-				"line" : 76,
+				"line" : 77,
 				"parent" : 0
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 				"command" : 1,
 				"file" : 0,
-				"line" : 74,
+				"line" : 75,
 				"parent" : 0
 			}
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diff --git a/cmake-build-debug/.ninja_deps b/cmake-build-debug/.ninja_deps
index ead1a36f5c9a6a8cae8fa5c69c9abf49326b80ea..62cf788f3c82b34d921efe8e2c0efdcc81e96b8a 100644
Binary files a/cmake-build-debug/.ninja_deps and b/cmake-build-debug/.ninja_deps differ
diff --git a/cmake-build-debug/.ninja_log b/cmake-build-debug/.ninja_log
index 596db8926adb54589b71c6051b97d0e8841c51c0..565fd70c982b717f386193768b6cccc9ae9e1a17 100644
--- a/cmake-build-debug/.ninja_log
+++ b/cmake-build-debug/.ninja_log
@@ -4,7 +4,7 @@
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 66	147	7337224459290340	bin/MINI_PROJECT_TEST_MAINTENANCE.exe	eac10cfe68d28c9
 15	1442	7337219487004756	googletest-build/googletest/CMakeFiles/gtest_main.dir/src/gtest_main.cc.obj	700f72f183449715
-883	4394	7337227348520238	bin/ExampleTests.exe	e524054f521ed215
+1548	5359	7338599975633138	bin/ExampleTests.exe	e524054f521ed215
 11	135	7337219473953355	CMakeFiles/calculator_tests.dir/src/compt_frequence.c.obj	ae1a440fafbde413
 8	1693	7337219489516990	CMakeFiles/calculator_tests.dir/tests/CalculatorTest.cpp.obj	34151dfcea83a3e9
 4	1687	7337219489447019	CMakeFiles/calculator_tests.dir/tests/ExampleTests.cpp.obj	ed20f0e70f2ab206
@@ -12,21 +12,7 @@
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 13139	13198	7337219604576183	lib/libgtest_main.a	15197e58a278424
 3	69	7337221552584597	CMakeFiles/ExampleTests.dir/src/Calculator.cpp.obj	209155e5fc26b780
-10	107	7337221552955612	CMakeFiles/ExampleTests.dir/src/compt_frequence.c.obj	d97eb00f9fc1d12e
-3	882	7337227313493746	CMakeFiles/ExampleTests.dir/tests/ExampleTests.cpp.obj	e28e202807b1bd82
-1	66	7337224458529383	CMakeFiles/MINI_PROJECT_TEST_MAINTENANCE.dir/src/main.c.obj	d48a854fb7bbdbb0
-0	99	7337222421042617	CMakeFiles/MINI_PROJECT_TEST_MAINTENANCE.dir/src/compt_frequence.c.obj	fbd68f8f639928e7
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-6	1705	7338580894416775	CMakeFiles/ExampleTests.dir/tests/ExampleTests.cpp.obj	e28e202807b1bd82
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-6	1398	7338584901610282	CMakeFiles/ExampleTests.dir/tests/ExampleTests.cpp.obj	e28e202807b1bd82
-1398	5008	7338584937578553	bin/ExampleTests.exe	e524054f521ed215
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-1548	5359	7338599975633138	bin/ExampleTests.exe	e524054f521ed215
+1	66	7337224458529383	CMakeFiles/MINI_PROJECT_TEST_MAINTENANCE.dir/src/main.c.obj	d48a854fb7bbdbb0
+0	99	7337222421042617	CMakeFiles/MINI_PROJECT_TEST_MAINTENANCE.dir/src/compt_frequence.c.obj	fbd68f8f639928e7
diff --git a/cmake-build-debug/CMakeFiles/clion-Debug-log.txt b/cmake-build-debug/CMakeFiles/clion-Debug-log.txt
index 850bbf0d08ae918e8c3c767113ff6eb670ea3e93..4a9c422d84bc0ab0b1a4a5ee331212d36f8d1072 100644
--- a/cmake-build-debug/CMakeFiles/clion-Debug-log.txt
+++ b/cmake-build-debug/CMakeFiles/clion-Debug-log.txt
@@ -1,5 +1,5 @@
 "C:\Program Files\JetBrains\CLion 2022.3.1\bin\cmake\win\x64\bin\cmake.exe" -DCMAKE_BUILD_TYPE=Debug "-DCMAKE_MAKE_PROGRAM=C:/Program Files/JetBrains/CLion 2022.3.1/bin/ninja/win/x64/ninja.exe" -G Ninja -S C:\Users\imani\CLionProjects\sample-ci-cpp -B C:\Users\imani\CLionProjects\sample-ci-cpp\cmake-build-debug
--- Configuring done (0.1s)
+-- Configuring done (0.8s)
 -- Generating done (0.0s)
 -- Build files have been written to: C:/Users/imani/CLionProjects/sample-ci-cpp/cmake-build-debug/googletest-download
 [1/7] Performing update step for 'googletest'
@@ -9,6 +9,6 @@
 [5/7] No install step for 'googletest'
 [6/7] No test step for 'googletest'
 [7/7] Completed 'googletest'
--- Configuring done (1.2s)
+-- Configuring done (3.2s)
 -- Generating done (0.0s)
 -- Build files have been written to: C:/Users/imani/CLionProjects/sample-ci-cpp/cmake-build-debug
diff --git a/cmake-build-debug/Testing/Temporary/LastTest.log b/cmake-build-debug/Testing/Temporary/LastTest.log
index 82adbdc1e059197e03cb5b82ff1dbdad9d77b595..8fe52aa709096d364039542bc27f73010ab787e4 100644
--- a/cmake-build-debug/Testing/Temporary/LastTest.log
+++ b/cmake-build-debug/Testing/Temporary/LastTest.log
@@ -1,3 +1,3 @@
-Start testing: Apr 03 17:06 Romance Daylight Time
+Start testing: Apr 03 17:28 Romance Daylight Time
 ----------------------------------------------------------
-End testing: Apr 03 17:06 Romance Daylight Time
+End testing: Apr 03 17:28 Romance Daylight Time
diff --git a/cmake-build-debug/build.ninja b/cmake-build-debug/build.ninja
index 6d2e68dbf9594ff139f6e673a3e82252dac8cf97..d6399272f68e490714d1ae51a09478acfffa1fab 100644
--- a/cmake-build-debug/build.ninja
+++ b/cmake-build-debug/build.ninja
@@ -50,6 +50,7 @@ cmake_ninja_workdir = C$:/Users/imani/CLionProjects/sample-ci-cpp/cmake-build-de
 build cmake_object_order_depends_target_MINI_PROJECT_TEST_MAINTENANCE: phony || CMakeFiles/MINI_PROJECT_TEST_MAINTENANCE.dir
 
 build CMakeFiles/MINI_PROJECT_TEST_MAINTENANCE.dir/src/compt_frequence.c.obj: C_COMPILER__MINI_PROJECT_TEST_MAINTENANCE_unscanned_Debug C$:/Users/imani/CLionProjects/sample-ci-cpp/src/compt_frequence.c || cmake_object_order_depends_target_MINI_PROJECT_TEST_MAINTENANCE
+  CODE_CHECK = "C:\Program Files\JetBrains\CLion 2022.3.1\bin\cmake\win\x64\bin\cmake.exe" -E __run_co_compile --tidy=clang-tidy;-checks=*;--extra-arg-before=--driver-mode=gcc --source=C:\Users\imani\CLionProjects\sample-ci-cpp\src\compt_frequence.c -- 
   DEP_FILE = CMakeFiles\MINI_PROJECT_TEST_MAINTENANCE.dir\src\compt_frequence.c.obj.d
   FLAGS = --coverage -g -fdiagnostics-color=always
   INCLUDES = -IC:/Users/imani/CLionProjects/sample-ci-cpp/include
@@ -57,6 +58,7 @@ build CMakeFiles/MINI_PROJECT_TEST_MAINTENANCE.dir/src/compt_frequence.c.obj: C_
   OBJECT_FILE_DIR = CMakeFiles\MINI_PROJECT_TEST_MAINTENANCE.dir\src
 
 build CMakeFiles/MINI_PROJECT_TEST_MAINTENANCE.dir/src/main.c.obj: C_COMPILER__MINI_PROJECT_TEST_MAINTENANCE_unscanned_Debug C$:/Users/imani/CLionProjects/sample-ci-cpp/src/main.c || cmake_object_order_depends_target_MINI_PROJECT_TEST_MAINTENANCE
+  CODE_CHECK = "C:\Program Files\JetBrains\CLion 2022.3.1\bin\cmake\win\x64\bin\cmake.exe" -E __run_co_compile --tidy=clang-tidy;-checks=*;--extra-arg-before=--driver-mode=gcc --source=C:\Users\imani\CLionProjects\sample-ci-cpp\src\main.c -- 
   DEP_FILE = CMakeFiles\MINI_PROJECT_TEST_MAINTENANCE.dir\src\main.c.obj.d
   FLAGS = --coverage -g -fdiagnostics-color=always
   INCLUDES = -IC:/Users/imani/CLionProjects/sample-ci-cpp/include
@@ -92,6 +94,7 @@ build bin/MINI_PROJECT_TEST_MAINTENANCE.exe: C_EXECUTABLE_LINKER__MINI_PROJECT_T
 build cmake_object_order_depends_target_ExampleTests: phony || cmake_object_order_depends_target_gtest cmake_object_order_depends_target_gtest_main
 
 build CMakeFiles/ExampleTests.dir/src/compt_frequence.c.obj: C_COMPILER__ExampleTests_unscanned_Debug C$:/Users/imani/CLionProjects/sample-ci-cpp/src/compt_frequence.c || cmake_object_order_depends_target_ExampleTests
+  CODE_CHECK = "C:\Program Files\JetBrains\CLion 2022.3.1\bin\cmake\win\x64\bin\cmake.exe" -E __run_co_compile --tidy=clang-tidy;-checks=*;--extra-arg-before=--driver-mode=gcc --source=C:\Users\imani\CLionProjects\sample-ci-cpp\src\compt_frequence.c -- 
   DEP_FILE = CMakeFiles\ExampleTests.dir\src\compt_frequence.c.obj.d
   FLAGS = --coverage -g -fdiagnostics-color=always
   INCLUDES = -IC:/Users/imani/CLionProjects/sample-ci-cpp/include -isystem C:/Users/imani/CLionProjects/sample-ci-cpp/cmake-build-debug/googletest-src/googletest/include -isystem C:/Users/imani/CLionProjects/sample-ci-cpp/cmake-build-debug/googletest-src/googletest
diff --git a/cmake-build-debug/googletest-download/.ninja_log b/cmake-build-debug/googletest-download/.ninja_log
index f1b9ee9fe4ace4c592e02a2b17ec01d27b1b8431..bac1a0d99d59e1b35134a1094a2326f03aac8dcf 100644
--- a/cmake-build-debug/googletest-download/.ninja_log
+++ b/cmake-build-debug/googletest-download/.ninja_log
@@ -1,37 +1,37 @@
 # ninja log v5
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-1	128	0	googletest-prefix/src/googletest-stamp/googletest-update	a5f82b73d97f2f0d
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+1	133	0	googletest-prefix/src/googletest-stamp/googletest-update	a5f82b73d97f2f0d
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 1	49	7337176065254970	C:/Users/imani/CLionProjects/sample-ci-cpp/cmake-build-debug/googletest-download/googletest-prefix/src/googletest-stamp/googletest-mkdir	40c3de5996ef7881
-1	128	0	C:/Users/imani/CLionProjects/sample-ci-cpp/cmake-build-debug/googletest-download/googletest-prefix/src/googletest-stamp/googletest-update	a5f82b73d97f2f0d
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diff --git a/run-clang-format.py b/run-clang-format.py
new file mode 100644
index 0000000000000000000000000000000000000000..395304e453c91bf0778396b75387395e8abec26c
--- /dev/null
+++ b/run-clang-format.py
@@ -0,0 +1,379 @@
+#!/usr/bin/env python
+"""A wrapper script around clang-format, suitable for linting multiple files
+and to use for continuous integration.
+
+This is an alternative API for the clang-format command line.
+It runs over multiple files and directories in parallel.
+A diff output is produced and a sensible exit code is returned.
+
+"""
+
+from __future__ import print_function, unicode_literals
+
+import argparse
+import codecs
+import difflib
+import fnmatch
+import io
+import errno
+import multiprocessing
+import os
+import signal
+import subprocess
+import sys
+import traceback
+
+from functools import partial
+
+try:
+    from subprocess import DEVNULL  # py3k
+except ImportError:
+    DEVNULL = open(os.devnull, "wb")
+
+
+DEFAULT_EXTENSIONS = 'c,h,C,H,cpp,hpp,cc,hh,c++,h++,cxx,hxx'
+DEFAULT_CLANG_FORMAT_IGNORE = '.clang-format-ignore'
+
+
+class ExitStatus:
+    SUCCESS = 0
+    DIFF = 1
+    TROUBLE = 2
+
+def excludes_from_file(ignore_file):
+    excludes = []
+    try:
+        with io.open(ignore_file, 'r', encoding='utf-8') as f:
+            for line in f:
+                if line.startswith('#'):
+                    # ignore comments
+                    continue
+                pattern = line.rstrip()
+                if not pattern:
+                    # allow empty lines
+                    continue
+                excludes.append(pattern)
+    except EnvironmentError as e:
+        if e.errno != errno.ENOENT:
+            raise
+    return excludes;
+
+def list_files(files, recursive=False, extensions=None, exclude=None):
+    if extensions is None:
+        extensions = []
+    if exclude is None:
+        exclude = []
+
+    out = []
+    for file in files:
+        if recursive and os.path.isdir(file):
+            for dirpath, dnames, fnames in os.walk(file):
+                fpaths = [os.path.join(dirpath, fname) for fname in fnames]
+                for pattern in exclude:
+                    # os.walk() supports trimming down the dnames list
+                    # by modifying it in-place,
+                    # to avoid unnecessary directory listings.
+                    dnames[:] = [
+                        x for x in dnames
+                        if
+                        not fnmatch.fnmatch(os.path.join(dirpath, x), pattern)
+                    ]
+                    fpaths = [
+                        x for x in fpaths if not fnmatch.fnmatch(x, pattern)
+                    ]
+                for f in fpaths:
+                    ext = os.path.splitext(f)[1][1:]
+                    if ext in extensions:
+                        out.append(f)
+        else:
+            out.append(file)
+    return out
+
+
+def make_diff(file, original, reformatted):
+    return list(
+        difflib.unified_diff(
+            original,
+            reformatted,
+            fromfile='{}\t(original)'.format(file),
+            tofile='{}\t(reformatted)'.format(file),
+            n=3))
+
+
+class DiffError(Exception):
+    def __init__(self, message, errs=None):
+        super(DiffError, self).__init__(message)
+        self.errs = errs or []
+
+
+class UnexpectedError(Exception):
+    def __init__(self, message, exc=None):
+        super(UnexpectedError, self).__init__(message)
+        self.formatted_traceback = traceback.format_exc()
+        self.exc = exc
+
+
+def run_clang_format_diff_wrapper(args, file):
+    try:
+        ret = run_clang_format_diff(args, file)
+        return ret
+    except DiffError:
+        raise
+    except Exception as e:
+        raise UnexpectedError('{}: {}: {}'.format(file, e.__class__.__name__,
+                                                  e), e)
+
+
+def run_clang_format_diff(args, file):
+    try:
+        with io.open(file, 'r', encoding='utf-8') as f:
+            original = f.readlines()
+    except IOError as exc:
+        raise DiffError(str(exc))
+    invocation = [args.clang_format_executable, file]
+
+    # Use of utf-8 to decode the process output.
+    #
+    # Hopefully, this is the correct thing to do.
+    #
+    # It's done due to the following assumptions (which may be incorrect):
+    # - clang-format will returns the bytes read from the files as-is,
+    #   without conversion, and it is already assumed that the files use utf-8.
+    # - if the diagnostics were internationalized, they would use utf-8:
+    #   > Adding Translations to Clang
+    #   >
+    #   > Not possible yet!
+    #   > Diagnostic strings should be written in UTF-8,
+    #   > the client can translate to the relevant code page if needed.
+    #   > Each translation completely replaces the format string
+    #   > for the diagnostic.
+    #   > -- http://clang.llvm.org/docs/InternalsManual.html#internals-diag-translation
+    #
+    # It's not pretty, due to Python 2 & 3 compatibility.
+    encoding_py3 = {}
+    if sys.version_info[0] >= 3:
+        encoding_py3['encoding'] = 'utf-8'
+
+    try:
+        proc = subprocess.Popen(
+            invocation,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            universal_newlines=True,
+            **encoding_py3)
+    except OSError as exc:
+        raise DiffError(
+            "Command '{}' failed to start: {}".format(
+                subprocess.list2cmdline(invocation), exc
+            )
+        )
+    proc_stdout = proc.stdout
+    proc_stderr = proc.stderr
+    if sys.version_info[0] < 3:
+        # make the pipes compatible with Python 3,
+        # reading lines should output unicode
+        encoding = 'utf-8'
+        proc_stdout = codecs.getreader(encoding)(proc_stdout)
+        proc_stderr = codecs.getreader(encoding)(proc_stderr)
+    # hopefully the stderr pipe won't get full and block the process
+    outs = list(proc_stdout.readlines())
+    errs = list(proc_stderr.readlines())
+    proc.wait()
+    if proc.returncode:
+        raise DiffError(
+            "Command '{}' returned non-zero exit status {}".format(
+                subprocess.list2cmdline(invocation), proc.returncode
+            ),
+            errs,
+        )
+    return make_diff(file, original, outs), errs
+
+
+def bold_red(s):
+    return '\x1b[1m\x1b[31m' + s + '\x1b[0m'
+
+
+def colorize(diff_lines):
+    def bold(s):
+        return '\x1b[1m' + s + '\x1b[0m'
+
+    def cyan(s):
+        return '\x1b[36m' + s + '\x1b[0m'
+
+    def green(s):
+        return '\x1b[32m' + s + '\x1b[0m'
+
+    def red(s):
+        return '\x1b[31m' + s + '\x1b[0m'
+
+    for line in diff_lines:
+        if line[:4] in ['--- ', '+++ ']:
+            yield bold(line)
+        elif line.startswith('@@ '):
+            yield cyan(line)
+        elif line.startswith('+'):
+            yield green(line)
+        elif line.startswith('-'):
+            yield red(line)
+        else:
+            yield line
+
+
+def print_diff(diff_lines, use_color):
+    if use_color:
+        diff_lines = colorize(diff_lines)
+    if sys.version_info[0] < 3:
+        sys.stdout.writelines((l.encode('utf-8') for l in diff_lines))
+    else:
+        sys.stdout.writelines(diff_lines)
+
+
+def print_trouble(prog, message, use_colors):
+    error_text = 'error:'
+    if use_colors:
+        error_text = bold_red(error_text)
+    print("{}: {} {}".format(prog, error_text, message), file=sys.stderr)
+
+
+def main():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument(
+        '--clang-format-executable',
+        metavar='EXECUTABLE',
+        help='path to the clang-format executable',
+        default='clang-format')
+    parser.add_argument(
+        '--extensions',
+        help='comma separated list of file extensions (default: {})'.format(
+            DEFAULT_EXTENSIONS),
+        default=DEFAULT_EXTENSIONS)
+    parser.add_argument(
+        '-r',
+        '--recursive',
+        action='store_true',
+        help='run recursively over directories')
+    parser.add_argument('files', metavar='file', nargs='+')
+    parser.add_argument(
+        '-q',
+        '--quiet',
+        action='store_true',
+        help="disable output, useful for the exit code")
+    parser.add_argument(
+        '-j',
+        metavar='N',
+        type=int,
+        default=0,
+        help='run N clang-format jobs in parallel'
+        ' (default number of cpus + 1)')
+    parser.add_argument(
+        '--color',
+        default='auto',
+        choices=['auto', 'always', 'never'],
+        help='show colored diff (default: auto)')
+    parser.add_argument(
+        '-e',
+        '--exclude',
+        metavar='PATTERN',
+        action='append',
+        default=[],
+        help='exclude paths matching the given glob-like pattern(s)'
+        ' from recursive search')
+
+    args = parser.parse_args()
+
+    # use default signal handling, like diff return SIGINT value on ^C
+    # https://bugs.python.org/issue14229#msg156446
+    signal.signal(signal.SIGINT, signal.SIG_DFL)
+    try:
+        signal.SIGPIPE
+    except AttributeError:
+        # compatibility, SIGPIPE does not exist on Windows
+        pass
+    else:
+        signal.signal(signal.SIGPIPE, signal.SIG_DFL)
+
+    colored_stdout = False
+    colored_stderr = False
+    if args.color == 'always':
+        colored_stdout = True
+        colored_stderr = True
+    elif args.color == 'auto':
+        colored_stdout = sys.stdout.isatty()
+        colored_stderr = sys.stderr.isatty()
+
+    version_invocation = [args.clang_format_executable, str("--version")]
+    try:
+        subprocess.check_call(version_invocation, stdout=DEVNULL)
+    except subprocess.CalledProcessError as e:
+        print_trouble(parser.prog, str(e), use_colors=colored_stderr)
+        return ExitStatus.TROUBLE
+    except OSError as e:
+        print_trouble(
+            parser.prog,
+            "Command '{}' failed to start: {}".format(
+                subprocess.list2cmdline(version_invocation), e
+            ),
+            use_colors=colored_stderr,
+        )
+        return ExitStatus.TROUBLE
+
+    retcode = ExitStatus.SUCCESS
+
+    excludes = excludes_from_file(DEFAULT_CLANG_FORMAT_IGNORE)
+    excludes.extend(args.exclude)
+
+    files = list_files(
+        args.files,
+        recursive=args.recursive,
+        exclude=excludes,
+        extensions=args.extensions.split(','))
+
+    if not files:
+        return
+
+    njobs = args.j
+    if njobs == 0:
+        njobs = multiprocessing.cpu_count() + 1
+    njobs = min(len(files), njobs)
+
+    if njobs == 1:
+        # execute directly instead of in a pool,
+        # less overhead, simpler stacktraces
+        it = (run_clang_format_diff_wrapper(args, file) for file in files)
+        pool = None
+    else:
+        pool = multiprocessing.Pool(njobs)
+        it = pool.imap_unordered(
+            partial(run_clang_format_diff_wrapper, args), files)
+    while True:
+        try:
+            outs, errs = next(it)
+        except StopIteration:
+            break
+        except DiffError as e:
+            print_trouble(parser.prog, str(e), use_colors=colored_stderr)
+            retcode = ExitStatus.TROUBLE
+            sys.stderr.writelines(e.errs)
+        except UnexpectedError as e:
+            print_trouble(parser.prog, str(e), use_colors=colored_stderr)
+            sys.stderr.write(e.formatted_traceback)
+            retcode = ExitStatus.TROUBLE
+            # stop at the first unexpected error,
+            # something could be very wrong,
+            # don't process all files unnecessarily
+            if pool:
+                pool.terminate()
+            break
+        else:
+            sys.stderr.writelines(errs)
+            if outs == []:
+                continue
+            if not args.quiet:
+                print_diff(outs, use_color=colored_stdout)
+            if retcode == ExitStatus.SUCCESS:
+                retcode = ExitStatus.DIFF
+    return retcode
+
+
+if __name__ == '__main__':
+    sys.exit(main())