C ++使用空格和引号对字符串进行标记 [英] C++ Tokenize a string with spaces and quotes

问题描述

我想用C ++编写一些标记字符串的东西.要解释我想要什么，请采用以下字符串:

I would like to write something in C++ that tokenize a string. To explain what I want, take the following string:

add string "this is a string with spaces!"

必须将其拆分为以下内容:

This must be splitted as follows:

add
string
this is a string with spaces!

是否有一种快速且基于标准库的方法?

Is there a quick and standard-library-based approach?

推荐答案

我想标准库没有直截了当的方法.间接遵循算法将起作用:

a)使用 string :: find('\')搜索'\"'.如果找到任何内容，请使用 string :: find('\''，prevIndex)搜索下一个'\'；如果找到任何内容，请使用 string :: substr().部分来自原始字符串.

b)现在以相同的方式为''字符搜索.

注意:您必须遍历整个字符串.

I guess there is no straight forward approach with standard library. Indirectly following algo will work:

a) search for '\"' with string::find('\"') . If anything found search for next '\"' using string::find('\'',prevIndex), If found use string::substr(). Discard that part from the original string.

b) Now Serach for ' ' character in the same way.

NOTE: you have to iterate through the whole string.

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