字符串替换在C++中

Question

我花了最后一个半小时试图弄清楚如何string在C++中运行一个简单的搜索和替换对象.

我有三个字符串对象.

string original, search_val, replace_val;

我想在运行一个搜索命令original的search_val,并与全部替换replace_val.

注意:仅限纯C++中的答案.环境是Mac OSX Leopard上的XCode.

Answer 1

循环应该与查找和替换一起使用

void searchAndReplace(std::string& value, std::string const& search,std::string const& replace)
{
    std::string::size_type  next;

    for(next = value.find(search);        // Try and find the first match
        next != std::string::npos;        // next is npos if nothing was found
        next = value.find(search,next)    // search for the next match starting after
                                          // the last match that was found.
       )
    {
        // Inside the loop. So we found a match.
        value.replace(next,search.length(),replace);   // Do the replacement.
        next += replace.length();                      // Move to just after the replace
                                                       // This is the point were we start
                                                       // the next search from. 
    }
}