itemsetoutput.cpp

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/*

Copyright (c) 2003, Cornell University
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*/

/////////////////////////////////////////////////////////////////////
///
/// ItemsetOutput.cpp
/// File stream output for itemsets
///
/////////////////////////////////////////////////////////////////////

#include "ItemsetOutput.h"

/////////////////////////////////////////////////////////////////////
/// @addtogroup InputOutput
/** @{ */

/////////////////////////////////////////////////////////////////////
/// Open file for outputting itemsets
///
/// @param filename           filename for output
/////////////////////////////////////////////////////////////////////
ItemsetOutput::ItemsetOutput(char *filename) {
    out = fopen(filename,"wt");
}

/////////////////////////////////////////////////////////////////////
/// Close file output stream
/////////////////////////////////////////////////////////////////////
ItemsetOutput::~ItemsetOutput() {
    if (out)
        fclose(out);
}

/////////////////////////////////////////////////////////////////////
/// Check if file is open
///
/// @return true if file is open
/////////////////////////////////////////////////////////////////////
int ItemsetOutput::isOpen() {
    if (out)
        return 1;
    else
        return 0;
}

/////////////////////////////////////////////////////////////////////
/// Print out an itemset
///
/// @param length          number of items in itemset
/// @param itemset         array of items
/// @param support         support of itemset (-1 to suppress)
/////////////////////////////////////////////////////////////////////
void ItemsetOutput::printSet(int length, int *itemset, int support) {
    for (int index = 0; index < length; index++)
        fprintf(out, "%d ", itemset[index]);
        
    if (support != -1)
        fprintf(out, "(%d)\n", support);
}
/** @} */