Exemple #1
0
int main (int argc, char* argv[])
{
    /** We create a command line parser. */
    OptionsParser parser ("BankFilter");
    parser.push_back (new OptionOneParam (STR_URI_INPUT,    "bank reference",               true));
    parser.push_back (new OptionOneParam (STR_URI_SEQ_IDS,  "file holding indexes of bank", true));

    try
    {
        /** We parse the user options. */
        IProperties* options = parser.parse (argc, argv);

        /** We read the list of indexes. */
        set<size_t> indexes;
        FILE* file = fopen (options->getStr(STR_URI_SEQ_IDS).c_str(), "r");
        if (file != 0)
        {
            char buffer[128];
            while (fgets (buffer, sizeof(buffer), file))  {  indexes.insert (atoi(buffer));  }
            fclose (file);
        }

        cout << "found " << indexes.size() << " indexes" << endl;

        /** We open the output bank. */
        string outputBankUri = options->getStr(STR_URI_INPUT) + "_" + System::file().getBaseName (options->getStr(STR_URI_SEQ_IDS));
        IBank* outputBank = Bank::open (outputBankUri);
        LOCAL (outputBank);

        /** We loop the input bank. */
        IBank* inputBank = Bank::open (options->getStr(STR_URI_INPUT));
        LOCAL (inputBank);

        /** We use another iterator for filtering out some sequences. */
        FilterIterator<Sequence,FilterFunctor> itSeq (inputBank->iterator(), FilterFunctor(indexes));

        /** We loop the sequences. */
        for (itSeq.first(); !itSeq.isDone(); itSeq.next())
        {
            outputBank->insert (itSeq.item());
        }

        /** We flush the output bank. */
        outputBank->flush();
    }

    catch (OptionFailure& e)
    {
        return e.displayErrors (cout);
    }
    catch (Exception& e)
    {
        cerr << "EXCEPTION: " << e.getMessage() << endl;
    }
}
Exemple #2
0
int main (int argc, char* argv[])
{
    /** We create a command line parser. */
    OptionsParser parser ("BankStats");
    parser.push_back (new OptionOneParam (STR_URI_INPUT, "bank input",   true));

    try
    {
        /** We parse the user options. */
        IProperties* options = parser.parse (argc, argv);

        std::string filename = options->getStr(STR_URI_INPUT);

        //! [snippet16_bank]
        // We get an instance of IBank from the URI.
        IBank* bank = Bank::open (filename);

        //! [snippet16_seq]
        // We create an iterator on the bank
        Iterator<Sequence>* it = bank->iterator();

        // We iterate the sequences of the bank
        for (it->first(); !it->isDone(); it->next())
        {
            // We get a shortcut on the current sequence and its data
            Sequence& seq  = it->item();
            Data&     data = seq.getData();

            // We dump some information about the sequence.
            std::cout << "comment " << seq.getComment() << std::endl;

            // We dump each nucleotide. NOTE: the output depends on the data encoding
            for (size_t i=0; i<data.size(); i++)  {  std::cout << data[i];  }  std::cout << std::endl;
        }

        //! [snippet16_seq]
        // The bank and the iterator have been allocated on the heap, so we have to delete them
        delete it;
        delete bank;
        //! [snippet16_bank]
    }
    catch (OptionFailure& e)
    {
        return e.displayErrors (std::cout);
    }
    catch (Exception& e)
    {
        std::cerr << "EXCEPTION: " << e.getMessage() << std::endl;
    }
}
Exemple #3
0
int main (int argc, char* argv[])
{
    if (argc < 2)
    {
        std::cerr << "you must provide a bank." << std::endl;
        return EXIT_FAILURE;
    }

    // We declare an input Bank and use it locally
    IBank* inputBank = Bank::open (argv[1]);
    LOCAL (inputBank);

    // We create an iterator over this bank.
    Iterator<Sequence>* it = inputBank->iterator();
    LOCAL (it);

    // We loop over sequences in a "push" fashion (a functor is called for each sequence)
    Functor fct;
    it->iterate (fct);
}
Exemple #4
0
// START Application
int main (int argc, char* argv[])
{
  // We check that the user provides at least one option: a Fasta/FastQ file.
  // Online GATB-Tutorial: this argument is automatically filled in with an 
  // appropriate file.
  if (argc < 2)
  {
    std::cerr << "Please, provide a sequence file." << std::endl;
    return EXIT_FAILURE;
  }

  // We define a try/catch block in case some method fails (bad filename for instance)
  try
  {
    // We declare an input Bank and use it locally
    IBank* inputBank = Bank::open (argv[1]);
    LOCAL (inputBank);

    // We create an iterator over this bank using some filtering system
    FilterIterator<Sequence,QualityFilter> it (inputBank->iterator(), QualityFilter());
    
    // We loop over sequences.
    for (it.first(); !it.isDone(); it.next())
    {
      // Shortcut
      Sequence& seq = it.item();

      // We dump the sequence quality
      std::cout << "[" << seq.getQuality() << "] " << computeMeanPhredScore(seq.getQuality()) << std::endl;

    }
  }
  catch (Exception& e)
  {
    std::cerr << "EXCEPTION: " << e.getMessage() << std::endl;
  }
}
Exemple #5
0
int main (int argc, char* argv[])
{
    if (argc < 2)
    {
        std::cerr << "you must provide a bank." << std::endl;
        return EXIT_FAILURE;
    }

    // We define a try/catch block in case some method fails
    try
    {
        // We declare an input Bank and use it locally
        IBank* inputBank = Bank::open (argv[1]);
        LOCAL (inputBank);

        // Note also that we have to parameterize the SubjectIterator by the kind of iterated
        // items (Sequence) and the processing that has to be done on each iteration (ProgressFunctor).
        SubjectIterator<Sequence> iter (inputBank->iterator(), 10);

        //  We create some listener to be notified every 10 iterations and attach it to the iterator.
        iter.addObserver (new ProgressFunctor());

        // We loop over sequences.
        for (iter.first(); !iter.isDone(); iter.next())
        {
            // Note that we do nothing inside the sequence iterating loop about the progression management.

            // In other words, we don't "pollute" the code inside this loop by presentation concerns and
            // we can therefore focus on the job to be done on the iterated sequences.
        }
    }
    catch (Exception& e)
    {
        std::cerr << "EXCEPTION: " << e.getMessage() << std::endl;
    }
}