Add pre-commit config (#69)

* Add .pre-commit-config.yaml
* format all using pre-commit clang-format hook
* Add pre-commit to inject unreal header comment
* Remove prepare_commit.bat & update CODING.md
* Remove check-added-large-files, add headers before clang-format

1 files changed, 0 insertions, 138 deletions

diff --git a/scripts/formatcode.py b/scripts/formatcode.py
deleted file mode 100644
index 49a8753da..000000000
--- a/scripts/formatcode.py
+++ /dev/null
@@ -1,138 +0,0 @@
-import argparse
-import fileinput
-import os
-import pathlib
-import re
-import subprocess
-
-match_expressions = []
-valid_extensions = []
-root_dir = ''
-use_batching = True
-
-def is_header_missing(f):
-    with open(f) as reader:
-        lines = reader.read().lstrip().splitlines()
-        if len(lines) > 0: return not lines[0].startswith("// ")
-        return True
-
-def add_headers(files, header):
-    for line in fileinput.input(files, inplace=True):
-        if fileinput.isfirstline():
-            [ print(h) for h in header.splitlines() ]
-        print(line, end="")
-
-def scan_tree(root):
-    files = []
-    header_files = []
-    with os.scandir(root) as dirs:
-        for entry in dirs:
-            if entry.is_dir():
-                scan_tree(os.path.join(root, entry.name))
-                continue
-            full_path = os.path.join(root, entry.name)
-            relative_root_path = os.path.relpath(full_path, start=root_dir)
-            if is_matching_filename(relative_root_path):
-                print("... formatting: {}".format(relative_root_path))
-                files.append(full_path)
-                if is_header_missing(full_path):
-                    header_files.append(full_path)
-    args = ""
-    if files:
-        if use_batching:
-            os.system("clang-format -i " + " ".join(files))
-        else:
-            for file in files:
-                os.system("clang-format -i " + file)
-    if header_files:
-        add_headers(header_files, "// Copyright Epic Games, Inc. All Rights Reserved.\n\n")
-
-def scan_zen(root):
-    with os.scandir(root) as dirs:
-        for entry in dirs:
-            if entry.is_dir() and entry.name.startswith("zen"):
-                    scan_tree(os.path.join(root, entry.name))
-
-def is_matching_filename(relative_root_path):
-    global match_expressions
-    global root_dir
-    global valid_extensions
-
-    if os.path.splitext(relative_root_path)[1].lower() not in valid_extensions:
-        return False
-    if not match_expressions:
-        return True
-    relative_root_path = relative_root_path.replace('\\', '/')
-    for regex in match_expressions:
-        if regex.fullmatch(relative_root_path):
-            return True
-    return False
-
-def parse_match_expressions(wildcards, matches):
-    global match_expressions
-    global valid_extensions
-
-    valid_extensions = ['.cpp', '.h']
-
-    for wildcard in wildcards:
-        regex = wildcard.replace('*', '%FORMAT_STAR%').replace('\\', '/')
-        regex = re.escape(regex)
-        regex = '.*' + regex.replace('%FORMAT_STAR%', '.*') + '.*'
-        try:
-            match_expressions.append(re.compile(regex, re.IGNORECASE))
-        except Exception as ex:
-            print(f'Could not parse input filename expression \'{wildcard}\': {str(ex)}')
-            quit()
-    for regex in matches:
-        try:
-            match_expressions.append(re.compile(regex, re.IGNORECASE))
-        except Exception as ex:
-            print(f'Could not parse input --match expression \'{regex}\': {str(ex)}')
-            quit()
-
-def validate_clang_format():
-    vstring = subprocess.check_output("clang-format --version", shell=True).decode().rstrip()
-
-    match = re.search(r'(\d+)\.(\d+)(\.(\d+))?$', vstring)
-    if not match:
-        raise ValueError("invalid version number '%s'" % vstring)
-
-    (major, minor, patch) = match.group(1, 2, 4)
-
-    if int(major) < 13:
-        if int(minor) == 0:
-            if int(patch) < 1:
-                raise ValueError(f'invalid clang-format version -- we require at least v12.0.1')
-
-def _main():
-    global root_dir, use_batching
-
-    parser = argparse.ArgumentParser()
-    parser.add_argument('filenames', nargs='*', help="Match text for filenames. If fullpath contains text it is a match, " +\
-        "* is a wildcard. Directory separators are matched by either / or \\. Case insensitive.")
-    parser.add_argument('--match', action='append', default=[], help="Match regular expression for filenames. " +\
-        "Relative path from the root zen directory must be a complete match. Directory separators are matched only by /. Case insensitive.")
-    parser.add_argument('--batch', dest='use_batching', action='store_true', help="Enable batching calls to clang-format.")
-    parser.add_argument('--no-batch', dest='use_batching', action='store_false', help="Disable batching calls to clang-format.")
-    parser.set_defaults(use_batching=True)
-    options = parser.parse_args()
-
-    parse_match_expressions(options.filenames, options.match)
-    root_dir = pathlib.Path(__file__).parent.parent.resolve()
-    use_batching = options.use_batching
-
-    validate_clang_format()
-
-    while True:
-        if (os.path.isfile(".clang-format")):
-            scan_zen(".")
-            quit()
-        else:
-            cwd = os.getcwd()
-            if os.path.dirname(cwd) == cwd:
-                quit()
-            os.chdir("..")
-
-
-if __name__ == '__main__':
-    _main()
\ No newline at end of file