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67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/*
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* Copyright 1987, 1988 by MIT Student Information Processing Board
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*
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* For copyright information, see copyright.h.
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*/
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#include <stdlib.h>
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#include "copyright.h"
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#include "ss_internal.h"
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#define ssrt ss_request_table /* for some readable code... */
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void
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ss_add_request_table(sci_idx, rqtbl_ptr, position, code_ptr)
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int sci_idx;
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ssrt *rqtbl_ptr;
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int position; /* 1 -> becomes second... */
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int *code_ptr;
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{
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register ss_data *info;
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register int i, size;
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info = ss_info(sci_idx);
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for (size=0; info->rqt_tables[size] != (ssrt *)NULL; size++)
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;
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/* size == C subscript of NULL == #elements */
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size += 2; /* new element, and NULL */
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info->rqt_tables = (ssrt **)realloc((char *)info->rqt_tables,
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(unsigned)size*sizeof(ssrt));
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if (info->rqt_tables == (ssrt **)NULL) {
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*code_ptr = errno;
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return;
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}
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if (position > size - 2)
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position = size - 2;
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if (size > 1)
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for (i = size - 2; i >= position; i--)
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info->rqt_tables[i+1] = info->rqt_tables[i];
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info->rqt_tables[position] = rqtbl_ptr;
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info->rqt_tables[size-1] = (ssrt *)NULL;
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*code_ptr = 0;
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}
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void
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ss_delete_request_table(sci_idx, rqtbl_ptr, code_ptr)
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int sci_idx;
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ssrt *rqtbl_ptr;
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int *code_ptr;
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{
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register ss_data *info;
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register ssrt **rt1, **rt2;
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*code_ptr = SS_ET_TABLE_NOT_FOUND;
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info = ss_info(sci_idx);
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rt1 = info->rqt_tables;
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for (rt2 = rt1; *rt1; rt1++) {
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if (*rt1 != rqtbl_ptr) {
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*rt2++ = *rt1;
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*code_ptr = 0;
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}
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}
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*rt2 = (ssrt *)NULL;
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return;
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}
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