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/*
* Copyright 1987, 1988 by MIT Student Information Processing Board
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose is hereby granted, provided that
* the names of M.I.T. and the M.I.T. S.I.P.B. not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. M.I.T. and the
* M.I.T. S.I.P.B. make no representations about the suitability of
* this software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#include "config.h"
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include "ss_internal.h"
#define ssrt ss_request_table /* for some readable code... */
void ss_add_request_table(int sci_idx, ssrt *rqtbl_ptr, int position, int *code_ptr)
{
register ss_data *info;
register int i, size;
ssrt **t;
info = ss_info(sci_idx);
for (size=0; info->rqt_tables[size] != (ssrt *)NULL; size++)
;
/* size == C subscript of NULL == #elements */
size += 2; /* new element, and NULL */
t = (ssrt **)realloc(info->rqt_tables, (unsigned)size*sizeof(ssrt *));
if (t == (ssrt **)NULL) {
*code_ptr = errno;
return;
}
info->rqt_tables = t;
if (position > size - 2)
position = size - 2;
if (size > 1)
for (i = size - 2; i >= position; i--)
info->rqt_tables[i+1] = info->rqt_tables[i];
info->rqt_tables[position] = rqtbl_ptr;
info->rqt_tables[size-1] = (ssrt *)NULL;
*code_ptr = 0;
}
void ss_delete_request_table(int sci_idx, ssrt *rqtbl_ptr, int *code_ptr)
{
register ss_data *info;
register ssrt **rt1, **rt2;
*code_ptr = SS_ET_TABLE_NOT_FOUND;
info = ss_info(sci_idx);
rt1 = info->rqt_tables;
for (rt2 = rt1; *rt1; rt1++) {
if (*rt1 != rqtbl_ptr) {
*rt2++ = *rt1;
*code_ptr = 0;
}
}
*rt2 = (ssrt *)NULL;
return;
}
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