拆分表达式，但离开分离

Question

有这样的表达，如：“！=”

name=="sometext" 
value!=4 

我想这样的表达式与字符串分隔符，如“==”和分裂，并保持这些分隔，因此结果将是：

name=="sometext" -> [name] [==] ["sometext"] 
value!=4   -> [value] [!=] [4] 

怎么可以用Boost或其他库？

Answer 1

有了提升，我会用这个简单的正则表达式：

(.*?)(==|!=)(.*) 

编辑：提供的表达是一个字符串。

编辑2：正则表达式

// (.*?)(==|!=)(.*) 
// 
// Match the regular expression below and capture its match into backreference number 1 «(.*?)» 
// Match any single character that is not a line break character «.*?» 
//  Between zero and unlimited times, as few times as possible, expanding as needed (lazy) «*?» 
// Match the regular expression below and capture its match into backreference number 2 «(==|!=)» 
// Match either the regular expression below (attempting the next alternative only if this one fails) «==» 
//  Match the characters “==” literally «==» 
// Or match regular expression number 2 below (the entire group fails if this one fails to match) «!=» 
//  Match the characters “!=” literally «!=» 
// Match the regular expression below and capture its match into backreference number 3 «(.*)» 
// Match any single character that is not a line break character «.*» 
//  Between zero and unlimited times, as many times as possible, giving back as needed (greedy) «*»