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/***************************************************************************
smb4k_cat - This utility behaves essentially like 'cat'. It is
used to "read" system configuration files and is part of Smb4K.
-------------------
begin : Mi Nov 2 2005
copyright : (C) 2005-2007 by Alexander Reinholdt
email : [email protected]
***************************************************************************/
/***************************************************************************
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, *
* MA 02110-1301 USA *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <locale.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <getopt.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fstream>
#include <iostream>
using namespace std;
#define MAX_LINE_LENGTH 1024
#define SMB4K_CAT_VERSION "0.8"
void info()
{
cout << "This is smb4k_cat (version " << SMB4K_CAT_VERSION << "), the cat utility of Smb4K" << endl;
cout << "Copyright (C) 2005-2007, Alexander Reinholdt" << endl;
cout << endl;
cout << "Usage:" << endl;
cout << " smb4k_cat {file}" << endl;
cout << " smb4k_cat --help" << endl;
cout << " smb4k_cat --version" << endl;
cout << endl;
cout << "Arguments:" << endl;
cout << " {file}\tThe (full) path of the file that should be printed to stdout." << endl;
cout << endl;
cout << " --help\tDisplay this help screen and exit." << endl;
cout << " --version\tDisplay the version information and exit." << endl;
cout << endl;
}
void version()
{
cout << "Version: " << SMB4K_CAT_VERSION << endl;
}
int main( int argc, char *argv[] )
{
(void) setlocale( LC_ALL, "" );
if ( argc < 2 )
{
info();
exit( EXIT_FAILURE );
}
char *filename = NULL;
int c;
while ( 1 )
{
int option_index = 0;
static struct option long_options[] =
{
{ "help", 0, 0, 0 },
{ "version", 0, 0, 0 },
{ 0, 0, 0, 0 }
};
c = getopt_long( argc, argv, "", long_options, &option_index );
if ( c == -1 )
{
break;
}
switch ( c )
{
case 0:
{
int len = strlen( long_options[option_index].name ) + 1;
char opt[len];
opt[0] = '\0';
(void) strncpy( opt, long_options[option_index].name, len );
opt[len-1] = '\0';
if ( !strncmp( opt, "help", len ) )
{
info();
exit( EXIT_SUCCESS );
}
else if ( !strncmp( opt, "version", len ) )
{
version();
exit( EXIT_SUCCESS );
}
else
{
break;
}
break;
}
case '?':
{
// Abort the program if an unknown option
// is encountered:
exit( EXIT_FAILURE );
}
default:
{
break;
}
}
}
if ( optind < argc )
{
// If we have an existing regular file, read it,
// display its contents and exit.
while ( optind < argc )
{
struct stat file_stat;
if ( lstat( argv[optind], &file_stat ) == -1 )
{
int err = errno;
cerr << "smb4k_cat: " << strerror( err ) << endl;
exit( EXIT_FAILURE );
}
if ( !filename )
{
int len = strlen( argv[optind] ) + 1;
filename = new char[len];
filename[0] = '\0';
(void) strncpy( filename, argv[optind], len );
filename[len-1] = '\0';
}
else
{
break;
}
optind++;
}
}
if ( filename )
{
FILE *fd;
if ( (fd = fopen( filename, "r" )) == NULL )
{
int err = errno;
cerr << "smb4k_cat: " << strerror( err ) << endl;
exit( EXIT_FAILURE );
}
char line[MAX_LINE_LENGTH];
line[0] = '\0';
while ( fgets( line, MAX_LINE_LENGTH, fd ) != NULL )
{
cout << line;
}
fclose( fd );
}
else
{
// This is redundant, but we'll keep it regardless.
cerr << "smb4k_cat: No file specified" << endl;
exit( EXIT_FAILURE );
}
exit( EXIT_SUCCESS );
}
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