内容:
在“虛拟聊天室”執行個體中增加一個新的具體聊天室類和一個新的具體會員類,要求如下:
1. 新的具體聊天室中發送的圖檔大小不得超過20M。
2. 新的具體聊天室中發送的文字長度不得超過100個字元。
3. 新的具體會員類可以發送圖檔資訊和文本資訊。
4. 新的具體會員類在發送文本資訊時,可以在資訊後加上時間。
修改用戶端測試類,注意原有系統類代碼和用戶端代碼的修改。
代碼:
#include<iostream>
#include<map>
#include<ctime>
#include<sstream>
using namespace std;
class AbstractChatroom;
string m_replace(string strSrc,const string &oldStr, const string &newStr,int count=-1)
{
string strRet=strSrc;
size_t pos = 0;
int l_count=0;
if(-1 == count) //替換所有
count = strRet.size();
while ((pos = strRet.find(oldStr, pos)) != string::npos)
{
strRet.replace(pos, oldStr.size(), newStr);
if(++l_count >= count) break;
pos += newStr.size();
}
return strRet;
}
class Member {
protected :
AbstractChatroom *chatroom;
string name;
public:
Member(string name) {
this->name=name;
}
AbstractChatroom* getChatroom() {
return chatroom;
}
void setChatroom(AbstractChatroom *chatroom) {
this->chatroom = chatroom;
}
string getName() {
return name;
}
void setName(string name) {
this->name = name;
}
virtual void sendText(string to,string message)=0;
virtual void sendImage(string to,string image)=0;
void receiveText(string from,string message) {
cout<<from<<"發送文本給"<<this->name<<",内容為:"<<message<<endl;
}
void receiveImage(string from,string image) {
cout<<from<<"發送圖檔給"<<this->name<<",内容為:"<<image<<endl;
}
};
class AbstractChatroom {
public:
virtual void registers(Member *member)=0;
virtual void sendText(string from,string to,string message)=0;
virtual void sendImage(string from,string to,string image)=0;
};
class ChatGroup: public AbstractChatroom{
private:
map<string, Member*> members;
map<string, Member*>::iterator iter;
public:
void registers(Member *member) {
iter=members.find(member->getName());
if(iter==members.end()) {
members.insert(map<string, Member*>::value_type(member->getName(),member));
member->setChatroom(this);
}
}
void sendText(string from, string to, string message) {
Member *member=members.find(to)->second;
string newMessage=message;
newMessage=m_replace(message,"日", "*");
member->receiveText(from, newMessage);
}
void sendImage(string from, string to, string image) {
Member *member= members.find(to)->second;
if(image.length()>5) {
cout<<"圖檔太大,發送失敗"<<endl;
}
else {
member->receiveImage(from, image);
}
}
};
class NewChat:public AbstractChatroom{
private:
map<string, Member*> members;
map<string, Member*>::iterator iter;
public:
void registers(Member *member) {
iter=members.find(member->getName());
if(iter==members.end()) {
members.insert(map<string, Member*>::value_type(member->getName(),member));
member->setChatroom(this);
}
}
void sendText(string from, string to, string message) {
Member *member=members.find(to)->second;
string newMessage=message;
newMessage=m_replace(message,"日", "*");
if(message.length()>100) {
cout<<"發送的文字長度不得超過100個字元,發送失敗"<<endl;
}
else {
member->receiveText(from, newMessage);
}
}
void sendImage(string from, string to, string image) {
Member *member=members.find(to)->second;
if(image.length()>20) {
cout<<"圖檔大小不得超過20M,發送失敗"<<endl;
}
else {
member->receiveImage(from, image);
}
}
};
class CommonMember :public Member{
protected :
string name;
public:
CommonMember(string name):Member(name) {
this->name=name;
}
void sendText(string to, string message) {
cout<<"普通會員發送消息:"<<endl;
chatroom->sendText(this->name, to, message);
}
void sendImage(string to, string image) {
cout<<"普通會員不能發送圖檔!"<<endl;
}
};
class DiamondMember :public Member{
protected :
string name;
public:
DiamondMember(string name):Member(name){
this->name=name;
}
void sendText(string to, string message) {
cout<<"鑽石會員發送消息:"<<endl;
chatroom->sendText(name,to, message);
}
void sendImage(string to, string image) {
cout<<"鑽石會員發送圖檔:"<<endl;
chatroom->sendImage(name, to, image);
}
};
class CrownMember :public Member{
protected :
string name;
public:
CrownMember(string name):Member(name){
this->name=name;
}
void sendText(string to, string message) {
time_t now = time(NULL);
tm* t = localtime(&now);
// 将資訊輸出到字元串流
stringstream ss;
stringstream ss2;
ss << t->tm_year + 1900 << "." << t->tm_mon + 1 << "." <<
t->tm_mday << ".." << t->tm_hour << "." << t->tm_min << "." << t->tm_sec;
cout<<"皇冠會員發送消息:"<<endl;
chatroom->sendText(name,to,message+" 現在時間"+ss.str());
}
void sendImage(string to, string image) {
cout<<"皇冠會員發送圖檔:"<<endl;
chatroom->sendImage(name, to, image);
}
};
int main(){
//AbstractChatroom *happyChat=new ChatGroup();
AbstractChatroom *newChat=new NewChat();
stringstream ss;//生成100個以上的字元
Member *member1,*member2,*member3,*member4,*member5,*member6;
member1=new DiamondMember("張三");
member2=new DiamondMember("李四");
member3=new CommonMember("王五");
member4=new CommonMember("小芳");
member5=new CommonMember("小紅");
member6=new CrownMember("雨軒");
newChat->registers(member1);
newChat->registers(member2);
newChat->registers(member3);
newChat->registers(member4);
newChat->registers(member5);
newChat->registers(member6);
member1->sendText("李四","李四,你好!");
member2->sendText("張三","張三,你好!");
member1->sendText("李四","今天天氣不錯,有日!");
member2->sendImage("張三","一個很大很大的太陽");
member2->sendImage("張三","太陽");
member3->sendText("小芳","還有問題嗎?");
member3->sendText("小紅","還有問題嗎?");
member4->sendText("王五","沒有了,謝謝!");
member5->sendText("王五","我也沒有了!");
member5->sendImage("王五","謝謝");
member6->sendText("王五","今天老師的作業怎麼沒有完成");
member6->sendImage("王五", "..................................................");
member6->sendText("王五", "今天老師的作業怎麼沒有完成,你知道老師有多麼的容易嗎,不知道體諒一下嗎");
for(int i=0;i<110;i++) {
ss <<"-";
}
member6->sendText("王五",ss.str());
}
運作結果: