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/****************************************************************
* *
* Copyright (c) 2006-2020 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "op.h"
#include "matchc.h"
#include "fnpc.h"
#include "gtm_utf8.h"
/* --------------------------------------------------------------------
* NOTE: This module is a near copy of sr_unix/op_fnpiece.c differing
* only in that it calls "matchb" instead of "matchc" to do matching.
* --------------------------------------------------------------------
*/
/*
* -----------------------------------------------
* op_fnzpiece()
* MUMPS $ZPIece function
*
* Arguments:
* src - Pointer to Source string mval
* del - Pointer to delimiter mval
* first - starting piece number
* last - last piece number
* dst - destination buffer to save the piece in
*
* Return:
* none
* -----------------------------------------------
*/
void op_fnzpiece(mval *src, mval *del, int first, int last, mval *dst)
{
int piece_cnt, del_len, src_len;
char *del_str, *src_str;
char *match_start;
int match_res;
delimfmt unichar;
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
assert(!is_gtm_chset_utf8 || !TREF(compile_time) || valid_utf_string(&src->str));
if (--first < 0)
first = 0;
if ((piece_cnt = last - first) < 1)
{
dst->str.len = 0;
dst->mvtype = MV_STR;
return;
}
MV_FORCE_STR(src);
MV_FORCE_STR(del);
/* See if we can take a short cut to op_fnzp1 (need to reformat delim argument) */
if ((1 == del->str.len) && (1 == piece_cnt))
{
unichar.unichar_val = 0;
unichar.unibytes_val[0] = *del->str.addr;
op_fnzp1(src, unichar.unichar_val, last, dst); /* Last is the one that counts as first may be too low */
return;
}
src_len = src->str.len;
src_str = src->str.addr;
del_len = del->str.len;
del_str = del->str.addr;
if (first)
{
match_start = (char *)matchb(del_len, (uchar_ptr_t)del_str, src_len, (uchar_ptr_t)src_str, &match_res, &first);
if (0 == match_res)
{ /* reached end of input string */
dst->str.len = 0;
dst->mvtype = MV_STR;
return;
}
src_len -= INTCAST(match_start - src_str);
src_str = match_start;
} else
match_start = src_str;
src_str = (char *)matchb(del_len, (uchar_ptr_t)del_str, src_len, (uchar_ptr_t)src_str, &match_res, &piece_cnt);
if (0 != match_res)
src_str -= del_len;
dst->str.addr = match_start;
dst->str.len = INTCAST(src_str - match_start);
dst->mvtype = MV_STR;
return;
}
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