fontconfig/src/makealias.py

72 lines
2.4 KiB
Python
Executable File

#!/usr/bin/env python3
import os
import re
import sys
import argparse
from collections import OrderedDict
# cat fontconfig/fontconfig.h | grep '^Fc[^ ]* *(' | sed -e 's/ *(.*$//'
def extract(fname):
with open(fname, 'r', encoding='utf-8') as f:
for l in f.readlines():
l = l.rstrip()
m = re.match(r'^(Fc[^ ]*)[\s\w]*\(.*', l)
if m and m.group(1) not in ['FcCacheDir', 'FcCacheSubdir']:
yield m.group(1)
if __name__=='__main__':
parser = argparse.ArgumentParser()
parser.add_argument('srcdir')
parser.add_argument('head')
parser.add_argument('tail')
parser.add_argument('headers', nargs='+')
args = parser.parse_args()
definitions = {}
for fname in os.listdir(args.srcdir):
define_name, ext = os.path.splitext(fname)
if ext != '.c':
continue
define_name = '__%s__' % os.path.basename(define_name)
for definition in extract(os.path.join(args.srcdir, fname)):
definitions[definition] = define_name
declarations = OrderedDict()
for fname in args.headers:
for declaration in extract(fname):
try:
define_name = definitions[declaration]
except KeyError:
print ('error: could not locate %s in src/*.c' % declaration)
sys.exit(1)
declarations[declaration] = define_name
with open(args.head, 'w') as head:
with open(args.tail, 'w') as tail:
tail.write('#if HAVE_GNUC_ATTRIBUTE\n')
last = None
for name, define_name in declarations.items():
alias = 'IA__%s' % name
hattr = 'FC_ATTRIBUTE_VISIBILITY_HIDDEN'
head.write('extern __typeof (%s) %s %s;\n' % (name, alias, hattr))
head.write('#define %s %s\n' % (name, alias))
if define_name != last:
if last is not None:
tail.write('#endif /* %s */\n' % last)
tail.write('#ifdef %s\n' % define_name)
last = define_name
tail.write('# undef %s\n' % name)
cattr = '__attribute((alias("%s"))) FC_ATTRIBUTE_VISIBILITY_EXPORT' % alias
tail.write('extern __typeof (%s) %s %s;\n' % (name, name, cattr))
tail.write('#endif /* %s */\n' % last)
tail.write('#endif /* HAVE_GNUC_ATTRIBUTE */\n')