sm64coopdx/autogen/extract_constants.py

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import os
import re
import sys
def extract_constants(filename):
with open(filename) as file:
txt = file.read()
# strip comments
txt = re.sub('//.*', ' ', txt)
while ('/*' in txt):
s1 = txt.split('/*', 1)
s2 = s1[1].split('*/', 1)
txt = s1[0] + s2[-1]
# strip multiline continues
txt = re.sub(r'\\\n', ' ', txt)
# strip extern C
txt = re.sub(r'extern "C" {', ' ', txt)
# single-line blocks
txt = re.sub(r'{\n', '{ ', txt)
txt = re.sub(r'\n{', ' {', txt)
tmp = txt
txt = ''
inside = 0
for character in tmp:
if inside != 0 and character == '\n':
continue
txt += character
if character == '{':
inside += 1
if character == '}':
inside -= 1
# normalize whitespace
txt = txt.replace('\t', ' ')
while (' ' in txt):
txt = txt.replace(' ', ' ')
while ('\n\n' in txt):
txt = txt.replace('\n\n', '\n')
# BAD culling of ifdef version
tmp = txt
txt = ''
inside = 0
for line in tmp.splitlines():
line = line.strip()
if line == '#ifdef VERSION_JP':
inside = 1
continue
if line == '#ifdef VERSION_EU':
inside = 1
continue
if line == '#else':
inside = 0
continue
if line == '#endif':
inside = 0
continue
if inside == 0:
txt += line + '\n'
# cull obvious non-enums, non-defines
tmp = txt
txt = ''
for line in tmp.splitlines():
line = line.strip()
if line.startswith('enum '):
txt += line + '\n'
if line.startswith('#define '):
pieces = line.split(' ')
if len(pieces) < 3:
continue
if '(' in pieces[1]:
continue
txt += line + '\n'
return txt
#print(extract_constants("include/audio_defines.h"))