Pro3

原始文件为 CPP 代码，本文是转换后的 Markdown 文件。

#include <iostream>
#include <cstring>
#include <cstdio>
#include <string>

using namespace std;

void readline(string line);
void dealwith_header(string line);
void dealwith_order(string line);
bool dealwith_order_sub(string line);
void dealwith_text(string line);
bool dealwith_text_sub(string line);
void dealwith_content(string line);

int main()
{
    freopen("in.txt","r",stdin);
    string line;
    while(getline(cin,line))
    {
        readline(line);
    }   
}

void readline(string line)
{   
    char c = line[0];
    if (c == '#')   
        dealwith_header(line);
    else if (c == '*')  
        dealwith_order(line);
    else if (c == 0)
        return;
    else    
        dealwith_text(line);
}

void dealwith_text(string line)
{
    printf("<p>");
    dealwith_content(line);

    do
    {
        if(!getline(cin,line))
        {
            line[0] = 0;
            break;
        }
    }while(dealwith_text_sub(line));

    printf("</p>\n");
    //cout << line << endl;
    readline(line);
}

bool dealwith_text_sub(string line)
{
    if (line[0] == 0 || line[0] == '*' || line[0] == '#') return false;

    printf("\n");
    dealwith_content(line);
    return true;
}

void dealwith_header(string line)
{
    int headnum = 0;    while(line[++headnum] == '#');

    printf("<h%d>",headnum);

    int pos = headnum;  while(line[pos++] == ' ');

    line = line.substr(pos-1,line.size());
    dealwith_content(line);

    printf("</h%d>\n",headnum);
    if(getline(cin,line))   readline(line);
}

void dealwith_order(string line)
{
    printf("<ul>\n");   
    while(dealwith_order_sub(line))
        if(!getline(cin,line)) line[0]=0;
    printf("</ul>\n");
    readline(line);
}

bool dealwith_order_sub(string line)
{
    if(line[0] != '*') return false;

    int pos = 1; while(line[pos++] == ' ');
    line = line.substr(pos-1,line.size());  
    printf("<li>");
    dealwith_content(line);
    printf("</li>\n");
    return true;
}

void dealwith_content(string line)
{
    int size = line.size();
    bool impLeft = true;
    for (int i = 0; i < size; ++i)
    {
        if (line[i] == '_')
        {
            if (impLeft == true)
                printf("<em>");
            else
                printf("</em>");
            impLeft = !impLeft;
        }
        else if (line[i] == '[')
        {
            int pos = line.find(']',i)-1;
            string text = line.substr(i+1,pos-i);

            int pos1 = line.find('(',pos)+1;
            int pos2 = line.find(')',pos);
            string link = line.substr(pos1,pos2-pos1);

            cout << "<a href=\"";
            dealwith_content(link);
            cout << "\">";
            dealwith_content(text);
            cout << "</a>";
            i = pos2;       
        }
        else 
            printf("%c",line[i]);
    }
}