PA2 Semestrálka main.cpp

#include <iostream>
#include "CFormatter.h"
#include "CServer.h"
#include <cstring>    // for strncmp()
#include <string>
#include <cstdlib>    // for atoi and exit()
using namespace std;

/**
 * Runs server on port specified.
 *
 * @param port Server port.
 */
void runServer ( int port = 80 );

/**
 * Runs formatter locally.
 *
 * @param inFile Input file.
 * @param outFile Output File.
 */
void runLocal  ( const string & inFile, const string & outFile = "" );

/**
 * Prints help for user on std out.
 */
void help      ();

/**
 * @mainpage Java Formatter
 *
 * @section intro Introduction
 *
 * This is java formatter program. It was written as seminar project on subject BI-PA2 on Czech technical university in Prague,
 * Faculty of information technology. It means there will be no future development but feel free to use it as you want.
 *
 * @section usage Usage
 *
 * @subsection server Server
 *
 * ./program_name
 *
 * Runs server on port 80 (make sure you have rights to do this).
 *
 * ./program_name -s
 *
 * Same as above.
 *
 * ./program_name -s -p 80
 *
 * Runs server on port specified after -p
 *
 * @subsection local Local
 *
 * ./program_name -l "filename"
 *
 * Works locally with file given after -l and prints result on std out.
 *
 * ./program_name -l "filename" -o "filename"
 *
 * Works locally with file given after -l and prints result to file given after -o
 */

int main ( int argc, char * argv[] )
 {
    switch ( argc )
     {
        case 1:
        case 2:
            if ( ! argv[1] || strncmp ( argv[1], "-s", 2 ) == 0 )
                runServer ( 80 );
            else
                help();
            break;
        case 3:
            if ( strncmp ( argv[1], "-l", 2 ) == 0 )
                runLocal ( argv[2] );
            else
                help();
            break;
        case 4:
            if ( strncmp ( argv[1], "-s", 2 ) == 0 && strncmp ( argv[2], "-p", 2 ) == 0 )
                runServer ( atoi ( argv[3] ) );
            else
                help();
            break;
        case 5:
            if ( strncmp ( argv[1], "-l", 2 ) == 0 && strncmp ( argv[3], "-o", 2 ) == 0 )
                runLocal ( argv[2], argv[4] );
            else
                help();
            break;
        default:
            help();
            break;
     }
    return 0;
 }

void runServer ( int port )
 {
    if ( port < 1 || port > 65000 )
     {
        cout << "Can not run on port: " << port << endl;
        exit ( 1 );
     }
    CServer server;
    cout << "Starting server on port: " << port << endl;
    server . run( port );
 }

void runLocal ( const string & inFile, const string & outFile )
 {
    try
     {
        CFormatter f ( inFile );
        f . read();
        if ( ! outFile . empty() )
         {
            fstream fs;
            fs . open ( outFile.c_str(), std::fstream::out );
            f . print ( fs );
         }
        else
            f . print ( cout );
     }
    catch ( CBadFileNameException e )
     {
        cerr << e.what() << endl;
     }
 }

void help ()
 {
    cout << "\n\
    Usage:\n\
    =====================================================================\n\n\
    Server behavioral:\n\
    ---------------------------------------------------------------------\n\
    ./program_name\n\
    \tRuns server on port 80 (make sure you have rights to do this).\n\
    ./program_name -s\n\
    \tSame as above.\n\
    ./program_name -s -p 80\n\
    \tRuns server on port specified after -p\n\n\
    Local behavioral\n\
    ---------------------------------------------------------------------\n\
    ./program_name -l \"filename\"\n\
    \tWorks locally with file given after -l and prints result on std out.\n\
    ./program_name -l \"filename\" -o \"filename\"\n\
    \tWorks locally with file given after -l and prints result to file given after -o\n\n";

    exit ( 0 );
 }