tokenizer - Break of a string or other character sequence into a series of tokens, from John Bandela
tokenizer - 分解字串,提取内容.作者: John Bandela

例一:
// simple_example_1.cpp
#include<iostream>
#include<boost/tokenizer.hpp>
#include<string>

int main(){
   using namespace std;
   using namespace boost;
   string s = "This is,  a test";
   tokenizer<> tok(s);
   for(tokenizer<>::iterator beg=tok.begin(); beg!=tok.end();++beg){
       cout << *beg << "\n";
   }
}

输出
This
is
a
test

tokenizer默认将单词以空格和标点为边界分开.

例二:
#include<iostream>
#include<boost/tokenizer.hpp>
#include<string>

int main(){
   using namespace std;
   using namespace boost;
   string s = "Field 1,\"putting quotes around fields, allows commas\",Field 3";
   tokenizer<escaped_list_separator<char> > tok(s);
   for(tokenizer<escaped_list_separator<char> >::iterator beg=tok.begin(); beg!=tok.end();++beg){
       cout << *beg << "\n";
   }
}
输出
Field 1
putting quotes around fields, allows commas
Field 3

双引号之间可以有标点.

例三:
// simple_example_3.cpp
#include<iostream>
#include<boost/tokenizer.hpp>
#include<string>

int main(){
   using namespace std;
   using namespace boost;
   string s = "12252001";
   int offsets[] = {2,2,4};
   offset_separator f(offsets, offsets+3);
   tokenizer<offset_separator> tok(s,f);
   for(tokenizer<offset_separator>::iterator beg=tok.begin(); beg!=tok.end();++beg){
       cout << *beg << "\n";
   }
}

把12252001分解为
12
25
2001

例4:
// char_sep_example_1.cpp
#include <iostream>
#include <boost/tokenizer.hpp>
#include <string>

int main()
{
  std::string str = ";!!;Hello|world||-foo--bar;yow;baz|";
  typedef boost::tokenizer<boost::char_separator<char> >
    tokenizer;
  boost::char_separator<char> sep("-;|");
  tokenizer tokens(str, sep);
  for (tokenizer::iterator tok_iter = tokens.begin();
       tok_iter != tokens.end(); ++tok_iter)
    std::cout << "<" << *tok_iter << "> ";
  std::cout << "\n";
  return EXIT_SUCCESS;
}

输出
<!!> <Hello> <world> <foo> <bar> <yow> <baz>
自定义分隔的标点

例5:
    // char_sep_example_2.cpp
    #include <iostream>
    #include <boost/tokenizer.hpp>
    #include <string>

    int main()
    {
        std::string str = ";;Hello|world||-foo--bar;yow;baz|";
        typedef boost::tokenizer<boost::char_separator<char> >
            tokenizer;
        boost::char_separator<char> sep("-;", "|", boost::keep_empty_tokens);
        tokenizer tokens(str, sep);
        for (tokenizer::iterator tok_iter = tokens.begin();
             tok_iter != tokens.end(); ++tok_iter)
          std::cout << "<" << *tok_iter << "> ";
        std::cout << "\n";
        return EXIT_SUCCESS;
    }

The output is:

    <> <> <Hello> <|> <world> <|> <> <|> <> <foo> <> <bar> <yow> <baz> <|> <>
去除-; , 保留|但将它看作是分隔符,当两个分隔符相邻的时候会自动加空格

例6:
    // char_sep_example_3.cpp
    #include <iostream>
    #include <boost/tokenizer.hpp>
    #include <string>

    int main()
    {
       std::string str = "This is,  a test";
       typedef boost::tokenizer<boost::char_separator<char> > Tok;
       boost::char_separator<char> sep; // default constructed
       Tok tok(str, sep);
       for(Tok::iterator tok_iter = tok.begin(); tok_iter != tok.end(); ++tok_iter)
         std::cout << "<" << *tok_iter << "> ";
       std::cout << "\n";
       return EXIT_SUCCESS;
    }

The output is:

    <This> <is> <,> <a> <test>
保留标点但将它看作分隔符

Examples of fixed-width encoding forms:

Examples of variable-width encoding forms:

d:\program files\microsoft visual studio 8\vc\atlmfc\include\atlplus.h(647) : error C2065: 'CStringW' : undeclared identifier
d:\program files\microsoft visual studio 8\vc\atlmfc\include\atlplus.h(647) : error C2146: syntax error : missing ';' before identifier 'strW'
d:\program files\microsoft visual studio 8\vc\atlmfc\include\atlplus.h(647) : error C3861: 'strW': identifier not found

但是在atlplus.h中明明已经include过atlstr.h：
...
#include <shellapi.h>
#include "atlevent.h"
#include <cstringt.h>
#include <atlstr.h>
//Avoid using <atlstr.h> except in the registry templates (for circular dependencies).

[
provider(name="ATL4", uuid="BC6B4B8A-0E4A-4bc9-B319-9DC2ACFB61EE")
];
...
...
GetStringAtLoc(rgStrings, dwValue, rgBytes, &szReplacement);
CStringW strW(szReplacement ? szReplacement : rgBytes.m_aT); // 在该行报错
...

已经查了很久，没有解决办法，请问有朋友遇到过类似的情况没有，最后如何解决的？

======================

问题暂时解决，办法如下：

1、在atlplus.h中，用<stdstring.h>代替<atlstr.h>：
（stdstring.h是Joe O'Leary编写的用于取代完整取代CString的类，基于std::string）

#include <stdstring.h>

2、修改报错行：
CStringW strW(szReplacement ? szReplacement : rgBytes.m_aT); // 在该行报错

修改为：
CStdStringW　strW(szReplacement ? szReplacement : rgBytes.m_aT); // 该行通过

现在编译已通过，但由于我改变了系统文件<atlplus.h>的内容，给atl额外引入了stl的负担，会影响atl完整性和高效性。该解决办法是很不恰当的。

还请各位高人给出合适的解决办法，谢谢。