90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/****************************************************************
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* *
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* Copyright 2006, 2009 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include "op.h"
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#include "matchc.h"
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#include "fnpc.h"
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/* --------------------------------------------------------------------
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* NOTE: This module is a near copy of sr_unix/op_fnpiece.c differing
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* only in that it calls "matchb" instead of "matchc" to do matching.
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* --------------------------------------------------------------------
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*/
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/*
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* -----------------------------------------------
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* op_fnzpiece()
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* MUMPS $ZPIece function
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*
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* Arguments:
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* src - Pointer to Source string mval
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* del - Pointer to delimiter mval
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* first - starting piece number
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* last - last piece number
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* dst - destination buffer to save the piece in
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*
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* Return:
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* none
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* -----------------------------------------------
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*/
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void op_fnzpiece(mval *src, mval *del, int first, int last, mval *dst)
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{
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int piece_cnt, del_len, src_len;
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char *del_str, *src_str;
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char *match_start;
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int match_res;
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delimfmt unichar;
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if (--first < 0)
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first = 0;
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if ((piece_cnt = last - first) < 1)
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{
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dst->str.len = 0;
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dst->mvtype = MV_STR;
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return;
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}
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MV_FORCE_STR(src);
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MV_FORCE_STR(del);
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/* See if we can take a short cut to op_fnzp1 (need to reformat delim argument) */
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if ((1 == del->str.len) && (1 == piece_cnt))
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{
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unichar.unichar_val = 0;
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unichar.unibytes_val[0] = *del->str.addr;
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op_fnzp1(src, unichar.unichar_val, last, dst); /* Last is the one that counts as first may be too low */
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return;
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}
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src_len = src->str.len;
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src_str = src->str.addr;
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del_len = del->str.len;
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del_str = del->str.addr;
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if (first)
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{
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match_start = (char *)matchb(del_len, (uchar_ptr_t)del_str, src_len, (uchar_ptr_t)src_str, &match_res, &first);
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if (0 == match_res)
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{ /* reached end of input string */
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dst->str.len = 0;
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dst->mvtype = MV_STR;
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return;
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}
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src_len -= INTCAST(match_start - src_str);
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src_str = match_start;
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} else
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match_start = src_str;
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src_str = (char *)matchb(del_len, (uchar_ptr_t)del_str, src_len, (uchar_ptr_t)src_str, &match_res, &piece_cnt);
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if (0 != match_res)
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src_str -= del_len;
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dst->str.addr = match_start;
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dst->str.len = INTCAST(src_str - match_start);
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dst->mvtype = MV_STR;
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return;
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}
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