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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
from pathlib import Path
if len(sys.argv) < 2:
print("Invalid usage of header_guards.py, it should be called with a path to one or multiple files.")
sys.exit(1)
HEADER_CHECK_OFFSET = 32
HEADER_BEGIN_OFFSET = 33
HEADER_END_OFFSET = -1
changed = []
invalid = []
for file in sys.argv[1:]:
with open(file, "rt", encoding="utf-8", newline="\n") as f:
lines = f.readlines()
if len(lines) <= HEADER_BEGIN_OFFSET:
continue # Most likely a dummy file.
if lines[HEADER_CHECK_OFFSET].startswith("#import"):
continue # Early catch obj-c file.
name = f"GODOT_{Path(file).name}".upper().replace(".", "_").replace("-", "_").replace(" ", "_")
HEADER_CHECK = f"#ifndef {name}\n"
HEADER_BEGIN = f"#define {name}\n"
HEADER_END = f"#endif // {name}\n"
if (
lines[HEADER_CHECK_OFFSET] == HEADER_CHECK
and lines[HEADER_BEGIN_OFFSET] == HEADER_BEGIN
and lines[HEADER_END_OFFSET] == HEADER_END
):
continue
# Guards might exist but with the wrong names.
if (
lines[HEADER_CHECK_OFFSET].startswith("#ifndef")
and lines[HEADER_BEGIN_OFFSET].startswith("#define")
and lines[HEADER_END_OFFSET].startswith("#endif")
):
lines[HEADER_CHECK_OFFSET] = HEADER_CHECK
lines[HEADER_BEGIN_OFFSET] = HEADER_BEGIN
lines[HEADER_END_OFFSET] = HEADER_END
with open(file, "wt", encoding="utf-8", newline="\n") as f:
f.writelines(lines)
changed.append(file)
continue
header_check = -1
header_begin = -1
header_end = -1
pragma_once = -1
objc = False
for idx, line in enumerate(lines):
if not line.startswith("#"):
continue
elif line.startswith("#ifndef") and header_check == -1:
header_check = idx
elif line.startswith("#define") and header_begin == -1:
header_begin = idx
elif line.startswith("#endif") and header_end == -1:
header_end = idx
elif line.startswith("#pragma once"):
pragma_once = idx
break
elif line.startswith("#import"):
objc = True
break
if objc:
continue
if pragma_once != -1:
lines.pop(pragma_once)
lines.insert(HEADER_CHECK_OFFSET, HEADER_CHECK)
lines.insert(HEADER_BEGIN_OFFSET, HEADER_BEGIN)
lines.append("\n")
lines.append(HEADER_END)
with open(file, "wt", encoding="utf-8", newline="\n") as f:
f.writelines(lines)
changed.append(file)
continue
if header_check == -1 and header_begin == -1 and header_end == -1:
# Guards simply didn't exist
lines.insert(HEADER_CHECK_OFFSET, HEADER_CHECK)
lines.insert(HEADER_BEGIN_OFFSET, HEADER_BEGIN)
lines.append("\n")
lines.append(HEADER_END)
with open(file, "wt", encoding="utf-8", newline="\n") as f:
f.writelines(lines)
changed.append(file)
continue
if header_check != -1 and header_begin != -1 and header_end != -1:
# All prepends "found", see if we can salvage this.
if header_check == header_begin - 1 and header_begin < header_end:
lines.pop(header_check)
lines.pop(header_begin - 1)
lines.pop(header_end - 2)
if lines[header_end - 3] == "\n":
lines.pop(header_end - 3)
lines.insert(HEADER_CHECK_OFFSET, HEADER_CHECK)
lines.insert(HEADER_BEGIN_OFFSET, HEADER_BEGIN)
lines.append("\n")
lines.append(HEADER_END)
with open(file, "wt", encoding="utf-8", newline="\n") as f:
f.writelines(lines)
changed.append(file)
continue
invalid.append(file)
if changed:
for file in changed:
print(f"FIXED: {file}")
if invalid:
for file in invalid:
print(f"REQUIRES MANUAL CHANGES: {file}")
sys.exit(1)
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