cpython/Tools/scripts/fixheader.py

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