/********************************************************************
*          World Wide Web Page Download Using Lynx in C++           *
*===================================================================*
*                       Name:   Wen-Chen Hu                         *
*                      Dated:  October 1, 1999                      *
*********************************************************************

*********************************************************************
*                The Purpose of this Project                        *
*********************************************************************

   Demonstrate how to use a text browser lynx to download Web pages.

*********************************************************************
*                 How to Use This Program spider                    *
*********************************************************************

   > g++ -o lynxc lynxc.cc
   > lynxc url number
     1. lynxc : this program name
     2. url   : a seed URL
     3. number: number of Web pages downloaded

   For example,
     > lynxc http://www.eng.auburn.edu/~wenchen/ 50

*********************************************************************
********************************************************************/

#include   <stdio.h>
#include   <stdlib.h>
#include   <string.h>


/*******************************************************************
*                          Main Program                            *
*******************************************************************/

main (int argc,  char *argv[])  {
   char  command[128], url[64];
   // argv[1]: the seed URL
   // argv[2]: number of Web sites downloaded

   strcpy (url, argv[1]);
   for (int i = 0;  i < atoi(argv[2]);  i++)  {
      strcpy (command, "lynx -dump ");
      strcat (command, url);
      strcat (command, " > work");
      // work is a temporary workarea.
      system (command);
      // Execute a host operating system command.

      // Start text processing on the work.
      // Enter the extracted information into database.
      // Assign url with a new URL.
   }
}