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#!/usr/bin/env python3
import subprocess
import sys
import os
with open(".clang-format") as f:
fmt = f.read()
CLANG_FORMAT_BIN = os.getenv("CLANG_FORMAT_BIN")
if CLANG_FORMAT_BIN is None:
p = subprocess.Popen(["clang-format", "--version"], stdout=subprocess.PIPE)
o, _ = p.communicate()
o = str(o, "utf-8")
o = o[len("clang-format version "):].strip()
o = o[:o.find(".")]
o = int(o)
if o < 7:
if subprocess.call(['which', 'clang-format-7'], stdout=subprocess.PIPE) == 0:
CLANG_FORMAT_BIN = 'clang-format-7'
elif subprocess.call(['which', 'clang-format-8'], stdout=subprocess.PIPE) == 0:
CLANG_FORMAT_BIN = 'clang-format-8'
elif subprocess.call(['which', 'clang-format-9'], stdout=subprocess.PIPE) == 0:
CLANG_FORMAT_BIN = 'clang-format-9'
elif subprocess.call(['which', 'clang-format-10'], stdout=subprocess.PIPE) == 0:
CLANG_FORMAT_BIN = 'clang-format-10'
else:
print ("clang-format 7 or above is needed. Aborted.")
exit(1)
else:
CLANG_FORMAT_BIN = 'clang-format'
COLUMN_LIMIT = 80
for line in fmt.split("\n"):
line = line.split(":")
if line[0].strip() == "ColumnLimit":
COLUMN_LIMIT = int(line[1].strip())
def custom_format(filename):
p = subprocess.Popen([CLANG_FORMAT_BIN, filename], stdout=subprocess.PIPE)
src, _ = p.communicate()
src = str(src, "utf-8")
macro_indent = 0
out = ""
for line in src.split("\n"):
if line.startswith("#"):
i = macro_indent
if line.startswith("#end") and macro_indent > 0:
macro_indent -= 1
i -= 1
elif line.startswith("#el") and macro_indent > 0:
i -= 1
elif line.startswith("#if") and not (line.startswith("#ifndef") and (line.endswith("_H") or line.endswith("H_"))):
macro_indent += 1
r = "#" + (i * " ") + line[1:]
if i != 0 and line.endswith("\\"):
r = r[:-1]
while r[-1].isspace() and len(r) != (len(line)-1):
r = r[:-1]
r += "\\"
if len(r) <= COLUMN_LIMIT:
line = r
elif "/*" in line and not line.strip().startswith("/*") and line.endswith("*/") and len(line) < (COLUMN_LIMIT-2):
cmt_start = line.rfind("/*")
line = line[:cmt_start] + " " * (COLUMN_LIMIT-2 - len(line)) + line[cmt_start:]
out += line + "\n"
return (out)
args = sys.argv[1:]
if len(args) == 0:
print ("Usage: ./format.py [-i] <filename>")
print ()
print (" The -i option, if specified, let the script to modify in-place")
print (" the source files. By default the results are written to stdout.")
print()
exit(1)
in_place = False
if args[0] == "-i":
in_place = True
args = args[1:]
for filename in args:
code = custom_format(filename)
if in_place:
with open(filename, "w") as f:
f.write(code)
else:
print(code)
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