拆分子字符串 [英] Split on substring

问题描述

如何以简单的方式基于另一个子字符串拆分字符串？

例如。拆分为\r\\\

  message1 \r\\\
message2 
  

=>

  message1 
 message2 
  

从我已经能够找到boost :: tokenizer和boost :: split

我知道我可以这样做通过使用std :: string :: find和std :: string :: substr并且有一个循环等...但这不是我的意思是简单。

解决方案

虽然boost :: split确实需要一个对字符操作的谓词，但是有一个提升 string algorithm ，可以在子字符串上拆分：

  #include< string& 
 #include< vector> 
 #include< algorithm> 
 #include< iterator> 
 #include< iostream> 
 #include< boost / algorithm / string / iter_find.hpp> 
 #include< boost / algorithm / string / finder.hpp> 
 int main（）
 {
 std :: string input =message1foomessage2foomessage3; 
 
 std :: vector< std :: string> v; 
 iter_split（v，input，boost :: algorithm :: first_finder（foo））; 
 
 copy（v.begin（），v.end（），std :: ostream_iterator< std :: string>（std :: cout，））; 
 std :: cout<< '\\\
'; 
} 
  

How would I split a string based on another substring in a simple way?

e.g. split on "\r\n"

message1\r\nmessage2 

=>

message1
message2

From what I've been able to find both boost::tokenizer and boost::split only operates on single characters.

EDIT:

I'm aware that I could do this by using std::string::find and std::string::substr and have a loop etc... but thats not what I mean by "simple".

解决方案

Although boost::split indeed takes a predicate that operates on characters, there's a boost string algorithm that can split on substrings:

#include <string>
#include <vector>
#include <algorithm>
#include <iterator>
#include <iostream>
#include <boost/algorithm/string/iter_find.hpp>
#include <boost/algorithm/string/finder.hpp>
int main()
{
    std::string input = "message1foomessage2foomessage3";

    std::vector<std::string> v;
    iter_split(v, input, boost::algorithm::first_finder("foo"));

    copy(v.begin(), v.end(), std::ostream_iterator<std::string>(std::cout, " "));
    std::cout << '\n';
}

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