Change the way of text manipulating

[mzer0-yu]

Implemented something like std::string, e.g.

unsigned int strID_user_agent = alloc_string(void); cs_page* ptr_to_user_agent = get_page_ptr(strID_user_agent); \set_string(ptr_to_useragent, "user agent"); /* "user agent" / \set_string(ptr_to_useragent, " firefox"); / "user agent firefox" */ free_string(strID_user_agent);

[luohaha]

You can test all modify to make sure this program can run normally.

[luohaha]

Sorry, I am busy recently. I create a new branch dev, you can PR all modify into dev. When dev can work normally, I will merge it into master.

[luohaha]

不好意思，我必须保证master分支能够正常工作。然后，最近没有时间把你新提交的代码整合进去。所以，你可以把新的修改都提交到dev。如果你可以让dev正常跑起来，那就太感谢啦。最后等我有空再把dev 并入 master。你往dev提交的修改我都会merge的。

[luohaha]

如果你觉得其他部分写得不好的，都欢迎更改，只要保证对外的api不变就行。

[mzer0-yu]

By all means.

Anyway, I don't have an available test machine now, maybe @AntonioCS could have it tested.

Would you do this favor or not @AntonioCS. AMA in that conversation.

[mzer0-yu]

Replaced by this PR https://github.com/luohaha/CSpider/pull/27

[luohaha]

Thanks! I will test branch dev when i have free time.

[AntonioCS]

@mzer0-yu Sure