vappendlog.C

Go to the documentation of this file.

// Copyright (C) 2001, Compaq Computer Corporation
// 
// This file is part of Vesta.
// 
// Vesta is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// Vesta 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
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with Vesta; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

//
// Append stdin to a log
//

#include "VestaLog.H"
#include <stdlib.h>
extern "C" {
#include <getopt.h>
}

using std::cin;
using std::cerr;
using std::endl;

char* program_name;

void
Usage()
{
    cerr << "Usage: " << program_name << " [-n lognum] [logdir]" << endl;
    exit(2);
}

int
main(int argc, char* argv[]) 
{
    int lognum = -1;
    VestaLog VRLog;

    program_name = argv[0];

    int c;
    for (;;) {
        c = getopt(argc, argv, "n:");
        if (c == EOF) break;
        switch (c) {
          case 'n':
            lognum = strtol(optarg, NULL, 0);
            break;
          case '?':
          default:
            Usage();
        }
    }

    char* dir;
    switch (argc - optind) {
      case 0:
        dir = ".";
        break;
      case 1:
        dir = argv[optind];
        break;
      default:
        Usage();
    }

    try {
        VRLog.open(dir, lognum, false, true);
    } catch (VestaLog::Error) {
        cerr << program_name << ": error opening log\n";
        exit(1);
    }

    char ch;

    // Read past existing part of log
    for (;;) {
        try {
            VRLog.get(ch);
        } catch (VestaLog::Error) {
            cerr << program_name << ": error getting character from log\n";
            exit(1);
        } catch (VestaLog::Eof) {
            if (!VRLog.nextLog()) break;
        }
    }

    VRLog.loggingBegin();
    VRLog.start();

    // Append new stuff
    while (cin.get(ch)) {
        try {
            VRLog.put(ch);
        } catch (VestaLog::Error) {
            cerr << program_name << ": error putting character to log\n";
            exit(1);
        }
    }

    VRLog.commit();
    VRLog.close();

    return 0;
}

---