如何创建自己的ostream / streambuf？ [英] How do I create my own ostream/streambuf?
问题描述
为了教育目的，我想创建一个ostream和流缓冲区来执行：
For educational purposes I want to create a ostream and stream buffer to do:
- 在执行< myVar;
- 存储在deque容器中，而不是使用std：cout或写入文件
- 记录额外的数据， ;<我做了多少次.write，写入的字节数以及flush（）的次数。但我不需要所有的信息。
我尝试重载但失败可怕。我尝试过重写
I tried overloading but failed horribly. I tried overloading write by doing
ostream& write( const char* s, streamsize n )
< cpp文件并修改它），但代码保持使用basic_ostream。我通过代码看起来，它看起来像我需要重载xsputn（这不是在这个页面上提到 http：// www。 cplusplus.com/reference/iostream/ostream ），但是我还需要什么呢？
in my basic_stringstream2 class (I copied paste basic_stringstream into my cpp file and modified it) but the code kept using basic_ostream. I looked through code and it looks like I need to overload xsputn (which isn't mention on this page http://www.cplusplus.com/reference/iostream/ostream ) but what else do I need to overload? and how do I construct my class (what does it need to inherit, etc)?
推荐答案
规范化的方法包括定义你的自己的streambuf。
您应该看看：
The canonical approach consists in defining your own streambuf. You should have a look at:
- Angelika LAnger的文章在IOStreams派生
- James Kanze对过滤streambuf的文章
- boost.iostream 的应用程序示例
- Angelika LAnger's articles on IOStreams derivation
- James Kanze's articles on filtering streambufs
- boost.iostream for examples of application
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