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import sys
template = '''
extern "C" void PyImport_AppendInittab(const char* name, void (*fn)(void));
extern "C" void {1}();
namespace {
struct TRegistrar {
inline TRegistrar() {
PyImport_AppendInittab("{0}", {1});
}
} REG;
}
'''
def mangle(name):
if '.' not in name:
return name
return ''.join('{}{}'.format(len(s), s) for s in name.split('.'))
if __name__ == '__main__':
if len(sys.argv) != 3:
print >>sys.stderr, 'Usage: <path/to/gen_py_reg.py> <python_module_name> <output_file>'
print >>sys.stderr, 'Passed: ' + ' '.join(sys.argv)
sys.exit(1)
with open(sys.argv[2], 'w') as f:
modname = sys.argv[1]
initname = 'init' + mangle(modname)
code = template.replace('{0}', modname).replace('{1}', initname)
f.write(code)
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