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# Copyright 2017 The Emscripten Authors. All rights reserved.
# Emscripten is available under two separate licenses, the MIT license and the
# University of Illinois/NCSA Open Source License. Both these licenses can be
# found in the LICENSE file.
'''
Processes a C source file, adding debugging information.
Similar to autodebugger.py, but runs on .c files. Will
overwrite the files it is given!
'''
from __future__ import print_function
import os, sys, re
filenames = sys.argv[1:]
for filename in filenames:
print('..%s..' % filename)
f = open(filename, 'r')
data = f.read()
f.close()
lines = data.split('\n')
for i in range(len(lines)):
m = re.match(r'^ [ ]*([\w\d \[\]]+) = +([^;]+);$', lines[i])
if m and (' if ' not in lines[i-1] or '{' in lines[i-1]) and \
(' if ' not in lines[i+1] or '{' in lines[i+1]) and \
(' else' not in lines[i-1] or '{' in lines[i-1]) and \
(' else' not in lines[i+1] or '{' in lines[i+1]) and \
(' for' not in lines[i-1]) and \
('struct' not in lines[i]):
raw = m.groups(1)[0].rstrip()
var = raw.split(' ')[-1]
if ' ' in raw and '[' in var: continue
lines[i] += ''' printf("%s:%d:%s=%%d\\n", (int)%s);''' % (filename, i+1, var, var)
f = open(filename, 'w')
f.write('\n'.join(lines))
f.close()
print('Success.')
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