📄 savefile.cpp
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// Fig. 19.19: savefile.cpp
// Program to enter user's contact information into a
// server-side file.
#include <iostream>
using std::cerr;
using std::cin;
using std::cout;
using std::ios;
#include <fstream>
using std::ofstream;
#include <string>
using std::string;
#include <cstdlib>
using std::getenv;
using std::atoi;
using std::exit;
int main()
{
char postString[ 1024 ] = "";
int contentLength = 0;
// variables to store user data
string dataString = "";
string firstname = "";
string lastname = "";
string address = "";
string town = "";
string state = "";
string zipcode = "";
string country = "";
string email = "";
// data was posted
if ( getenv( "CONTENT_LENGTH" ) )
contentLength = atoi( getenv( "CONTENT_LENGTH" ) );
cin.read( postString, contentLength );
dataString = postString;
// search for first '+' character
string::size_type charLocation = dataString.find( "+" );
// search for next '+' character
while ( charLocation < string::npos )
{
dataString.replace( charLocation, 1, " " );
charLocation = dataString.find( "+", charLocation + 1 );
} // end while
// find location of firstname
int firstStart = dataString.find( "firstname=" ) + 10;
int endFirst = dataString.find( "&lastname" );
firstname = dataString.substr( firstStart, endFirst - firstStart );
// find location of lastname
int lastStart = dataString.find( "lastname=" ) + 9;
int endLast = dataString.find( "&address" );
lastname = dataString.substr( lastStart, endLast - lastStart );
// find location of address
int addressStart = dataString.find( "address=" ) + 8;
int endAddress = dataString.find( "&town" );
address = dataString.substr( addressStart, endAddress - addressStart );
// find location of town
int townStart = dataString.find( "town=" ) + 5;
int endTown = dataString.find( "&state" );
town = dataString.substr( townStart, endTown - townStart );
// find location of state
int stateStart = dataString.find( "state=" ) + 6;
int endState = dataString.find( "&zipcode" );
state = dataString.substr( stateStart, endState - stateStart );
// find location of zip code
int zipStart = dataString.find( "zipcode=" ) + 8;
int endZip = dataString.find( "&country" );
zipcode = dataString.substr( zipStart, endZip - zipStart );
// find location of country
int countryStart = dataString.find( "country=" ) + 8;
int endCountry = dataString.find( "&email" );
country = dataString.substr( countryStart, endCountry - countryStart );
// find location of e-mail address
int emailStart = dataString.find( "email=" ) + 6;
int endEmail = dataString.find( "&submit" );
email = dataString.substr( emailStart, endEmail - emailStart );
cout << "Content-Type: text/html\n\n"; // output header
// output XML declaration and DOCTYPE
cout << "<?xml version = \"1.0\"?>"
<< "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" "
<< "\"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">";
// output html element and some of its contents
cout << "<html xmlns = \"http://www.w3.org/1999/xhtml\">"
<< "<head><title>Contact Information entered</title></head><body>";
ofstream outFile( "clients.txt", ios::app ); // output to file
if ( !outFile ) // file was not opened properly
{
cerr << "Error: could not open contact file.";
exit( 1 );
} // end if
// append data to clients.txt file
outFile << firstname << " " << lastname << "\n" << address << "\n"
<< town << " " << state << " " << country << " " << zipcode
<< "\n" << email << "\n\n";
// output data to user
cout << "<table><tbody><tr><td>First Name:</td><td>" << firstname
<< "</td></tr><tr><td>Last Name:</td><td>" << lastname
<< "</td></tr><tr><td>Address:</td><td>" << address
<< "</td></tr><tr><td>Town:</td><td>" << town
<< "</td></tr><tr><td>State:</td><td>" << state
<< "</td></tr><tr><td>Zip Code:</td><td>" << zipcode
<< "</td></tr><tr><td>Country:</td><td>" << country
<< "</td></tr><tr><td>Email:</td><td>" << email
<< "</td></tr></tbody></table></body>\n</html>\n";
return 0;
} // end main
/**************************************************************************
* (C) Copyright 1992-2005 by Deitel & Associates, Inc. and *
* Pearson Education, Inc. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
**************************************************************************/
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