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obitools3/src/obidmscolumn_idx.c

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2016-02-18 10:38:51 +01:00
/****************************************************************************
* OBIDMS_column_idx functions *
****************************************************************************/
/**
* @file obidsmcolumn_idx.c
* @author Celine Mercier
* @date February 14th 2016
* @brief Functions handling OBIColumns containing data with the index_t type.
*/
#include <stdlib.h>
#include <stdio.h>
#include "obidmscolumn.h"
#include "obitypes.h"
#include "obierrno.h"
#include "obidebug.h"
#define DEBUG_LEVEL 0 // TODO has to be defined somewhere else (cython compil flag?)
/**********************************************************************
*
* D E F I N I T I O N O F T H E P U B L I C F U N C T I O N S
*
**********************************************************************/
int obi_column_set_index(OBIDMS_column_p column, index_t line_nb, index_t value)
{
// Check that the line number is not greater than the maximum allowed
if (line_nb >= MAXIMUM_LINE_COUNT)
{
obi_set_errno(OBICOL_UNKNOWN_ERROR);
obidebug(1, "\nError trying to set a value at a line number greater than the maximum allowed");
return -1;
}
// Check if the file needs to be enlarged
while ((line_nb+1) > (column->header)->line_count)
{
// Enlarge the file
if (obi_enlarge_column(column) < 0)
return -1;
}
// Update lines used
if ((line_nb+1) > (column->header)->lines_used)
(column->header)->lines_used = line_nb+1;
// Set the value
*(((index_t*) (column->data)) + line_nb) = value;
return 0;
}
index_t obi_column_get_index(OBIDMS_column_p column, index_t line_nb)
{
if ((line_nb+1) > ((column->header)->line_count))
{
obi_set_errno(OBICOL_UNKNOWN_ERROR);
obidebug(1, "\nError trying to get a value that is beyond the current number of lines used in the column");
return OBIIdx_NA;
}
return *(((index_t*) (column->data)) + line_nb);
}