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#! /usr/bin/env python3
# Add some standard cpp magic to a header file
import sys
def main():
args = sys.argv[1:]
for filename in args:
process(filename)
def process(filename):
try:
f = open(filename, 'r')
except IOError as msg:
sys.stderr.write('%s: can\'t open: %s\n' % (filename, str(msg)))
return
with f:
data = f.read()
if data[:2] != '/*':
sys.stderr.write('%s does not begin with C comment\n' % filename)
return
try:
f = open(filename, 'w')
except IOError as msg:
sys.stderr.write('%s: can\'t write: %s\n' % (filename, str(msg)))
return
with f:
sys.stderr.write('Processing %s ...\n' % filename)
magic = 'Py_'
for c in filename:
if ord(c)<=0x80 and c.isalnum():
magic = magic + c.upper()
else: magic = magic + '_'
print('#ifndef', magic, file=f)
print('#define', magic, file=f)
print('#ifdef __cplusplus', file=f)
print('extern "C" {', file=f)
print('#endif', file=f)
print(file=f)
f.write(data)
print(file=f)
print('#ifdef __cplusplus', file=f)
print('}', file=f)
print('#endif', file=f)
print('#endif /*', '!'+magic, '*/', file=f)
if __name__ == '__main__':
main()
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