remove the duplication code

remove the  duplication code

tools/export_model.py

@@ -41,27 +41,11 @@ from paddle import fluid
 from ppocr.utils.utility import initial_logger
 logger = initial_logger()
 from ppocr.utils.save_load import init_model
-from ppocr.utils.character import CharacterOps
-from ppocr.utils.utility import create_module
 
 
-def main():
-    config = program.load_config(FLAGS.config)
-    program.merge_config(FLAGS.opt)
-    logger.info(config)
-
-    # check if set use_gpu=True in paddlepaddle cpu version
-    use_gpu = config['Global']['use_gpu']
-    program.check_gpu(use_gpu)
 
-    alg = config['Global']['algorithm']
-    assert alg in ['EAST', 'DB', 'Rosetta', 'CRNN', 'STARNet', 'RARE']
-    if alg in ['Rosetta', 'CRNN', 'STARNet', 'RARE']:
-        config['Global']['char_ops'] = CharacterOps(config['Global'])
-
-    place = fluid.CUDAPlace(0) if use_gpu else fluid.CPUPlace()
-    startup_prog = fluid.Program()
-    eval_program = fluid.Program()
+def main():
+     startup_prog, eval_program, place, config = program.preProcess()
 
     feeded_var_names, target_vars, fetches_var_name = program.build_export(
         config, eval_program, startup_prog)
@@ -88,6 +72,4 @@ def main():
 
 
 if __name__ == '__main__':
-    parser = program.ArgsParser()
-    FLAGS = parser.parse_args()
     main()