python实现自动生成C++代码的代码生成器

template = "hello %s , your website  is %s " % ("大CC","http://blog.me115.com")
print(template)

template = "hello {0} , your website  is {1} ".format("大CC","http://blog.me115.com")
print(template)

template = "hello %(name)s ，your name is %(name), your website  is %(message)s" %{"name":"大CC","message":"http://blog.me115.com"}
print(template)

template = "hello {name} , your name is {name}, your website  is {message} ".format(name="大CC",message="http://blog.me115.com")
print(template)

from string import Template
tempTemplate = string.Template("Hello $name ,your website is $message")
print(tempTemplate.substitute(name='大CC',message='http://blog.me115.com'))

///
/// @class ${CLASSNAME}
/// @brief Redis底层接口类 操作${TABLE_NAME}表
/// TABLE ${TABLE_NAME_UPPER}
/// @author dao_cpp_generator.py
/// @generate date: ${GENE_DATE}
/// [注：本文件为自动生成，不需要人为编辑，若有修改，请通过配置py脚本来重新生成.]

#include "${CLASSNAME}.h"
#include "include/${TABLE_NAME}_t.h"
#include "RedisManager.h"
#include "common/LogMacros.h"
#include "common/StringUtility/OtherStringFunc.h"
#include "common/DateTime.h"

namespace redisdao{

#define PRIMARY_KEY "${PRIMER_KEY}"
const string ${CLASSNAME}::TABLE_NAME = "${TABLE_NAME}";
const string ${CLASSNAME}::TABLE_ID = "${TABLE_ID}"; //在数据库中的表的唯一性标识符
const string ${CLASSNAME}::KEY_SEPARETER = "${KEY_SEPARETER}";

${CLASSNAME}::${CLASSNAME}(void)
{
    if ( 0 == m_reHandler.EnsureConnect())
        m_bRedisConnected = true;
    else
        m_bRedisConnected = false;
}

${CLASSNAME}::~${CLASSNAME}(void)
{
}

int ${CLASSNAME}::InsertRecord(const string& strVal)
...

#! /usr/bin/env python
#coding=utf-8
#Redis底层操作类CPP文件生成程序（*RedisDao.cpp)
#author me115@126.com 2014-7-22
import os,sys,re,traceback
from datetime import datetime
from string import Template

class DaoCppGenerator:

    def generate(self):
        tableName = 'students'
        className = '%sRedisDao' %  tableName.capitalize()
        filePath = r'include/%s.cpp' % className
        class_file = open(filePath,'w')

        lines = []

        #模版文件
        template_file = open(r'dao_cpp.template','r')
        tmpl = Template(template_file.read())

        #模版替换
        lines.append(tmpl.substitute(
                    CLASSNAME = className,
                    TABLE_NAME = tableName,
                    TABLE_NAME_UPPER = tableName.upper(), 
                    GENE_DATE = datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
                    TABLE_ID = '115',
                    EXPIRE_DATE = '06JUN14'))

        # 0.将生成的代码写入文件
        class_file.writelines(lines)
        class_file.close()

        print 'generate %s over. ~ ~' % filePath