过滤非嵌套的html tag, 最近要用，先来写个函数！

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简单逻辑如下，欢迎大家挑毛病：

#include <iostream>using namespace std;#define TAG_BEGIN  "<p class=\"img-desc\">"#define TAG_END    "</p>"void filterHtmlTag(string &strHtml){unsigned int leftTagLen = string(TAG_BEGIN).size();unsigned int rightTagLen = string(TAG_END).size();while(1){unsigned int pos1 = strHtml.find(TAG_BEGIN);if(pos1 == string::npos){return;}unsigned int pos2 = strHtml.find(TAG_END, pos1 + leftTagLen);if(pos2 == string::npos){return;}strHtml.erase(pos1, pos2 - pos1 + rightTagLen);}}int main(){{string s = "xxx<p class=\"img-desc\">hello world</p>yyyy";filterHtmlTag(s);cout << s.c_str() << endl;}{string s = "xxx<p class=\"img-desc\"></p>yyyy";filterHtmlTag(s);cout << s.c_str() << endl;}{string s = "<p class=\"img-desc\"></p>yyyy";filterHtmlTag(s);cout << s.c_str() << endl;}{string s = "xxx<p class=\"img-desc\"></p>";filterHtmlTag(s);cout << s.c_str() << endl;}{string s = "<p class=\"img-desc\"></p>";filterHtmlTag(s);cout << s.c_str() << endl;}{string s = "<p class=\"img-desc\">x</p>";filterHtmlTag(s);cout << s.c_str() << endl;}{string s = "xxx<p class=\"img-desc\">hello world</p>yyyy,xxx<p class=\"img-desc\">hello world</p>yyyy,xxx<p class=\"img-desc\">hello world</p>yyyy,";filterHtmlTag(s);cout << s.c_str() << endl;}{string s = "xxx<p class=\"img-desc\"></p>yyyy,xxx<p class=\"img-desc\">hello world</p>yyyy,xxx<p class=\"img-desc\">hello world</p>yyyy,";filterHtmlTag(s);cout << s.c_str() << endl;}{string s = "xxx<p class=\"img-desc\"></p>yyyy,xxx<p class=\"img-desc\">hello world</p>yyyy,xxx<p class=\"img-desc\">hello world</p>yyyy,";filterHtmlTag(s);cout << s.c_str() << endl;}return 0;}

OK, 不多说，睡觉。

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