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#!/usr/bin/env python
"""Script to sort the top-most block of #include lines.
Assumes the LLVM coding conventions.
Currently, this script only bothers sorting the llvm/... headers. Patches
welcome for more functionality, and sorting other header groups.
"""
import argparse
import os
import re
import sys
import tempfile
def sort_includes(f):
lines = f.readlines()
look_for_api_header = f.name[-4:] == '.cpp'
headers_begin = 0
headers_end = 0
api_headers = []
local_headers = []
project_headers = []
system_headers = []
for (i, l) in enumerate(lines):
if l.strip() == '':
continue
if l.startswith('#include'):
if headers_begin == 0:
headers_begin = i
headers_end = i
header = l[len('#include'):].lstrip()
if look_for_api_header and header.startswith('"'):
api_headers.append(header)
look_for_api_header = False
continue
if header.startswith('<'):
system_headers.append(header)
continue
if header.startswith('"llvm/') or header.startswith('"clang/'):
project_headers.append(header)
continue
local_headers.append(header)
continue
# Only allow comments and #defines prior to any includes. If either are
# mixed with includes, the order might be sensitive.
if headers_begin != 0:
break
if l.startswith('//') or l.startswith('#define') or l.startswith('#ifndef'):
continue
break
if headers_begin == 0:
return
local_headers.sort()
project_headers.sort()
system_headers.sort()
headers = api_headers + local_headers + project_headers + system_headers
header_lines = ['#include ' + h for h in headers]
lines = lines[:headers_begin] + header_lines + lines[headers_end + 1:]
#for l in lines[headers_begin:headers_end]:
# print l.rstrip()
f.seek(0)
f.truncate()
f.writelines(lines)
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('files', nargs='+', type=argparse.FileType('r+'),
help='the source files to sort includes within')
args = parser.parse_args()
for f in args.files:
sort_includes(f)
if __name__ == '__main__':
main()
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