103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
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/****************************************************************
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* *
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* Copyright 2001, 2007 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 "gtm_stdio.h"
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#include "gtm_string.h"
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#include "io.h"
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#include "iottdef.h"
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#include "iomtdef.h"
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#include "iosp.h"
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GBLREF io_pair io_curr_device;
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void
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iomt_write (mstr *v)
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{
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error_def (ERR_MTRDONLY);
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io_desc *io_ptr;
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unsigned char *inpt;
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int inlen, outlen, n;
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unsigned char *outcp;
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d_mt_struct *mt_ptr;
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io_ptr = io_curr_device.out;
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mt_ptr = (d_mt_struct *) io_ptr->dev_sp;
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if (mt_ptr->read_only)
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rts_error (VARLSTCNT (1) ERR_MTRDONLY);
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#ifdef UNIX
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if (mt_ptr->mode != MT_M_WRITE)
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{
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uint4 status;
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status = iomt_reopen (io_ptr, MT_M_WRITE, FALSE);
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}
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#endif
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if (mt_ptr->last_op != mt_write)
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iomt_wrtinit (io_ptr);
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inlen = v->len;
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outlen = io_ptr->width - mt_ptr->rec.len;
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if (!mt_ptr->wrap && inlen > outlen)
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inlen = outlen;
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if (!inlen)
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return;
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for (inpt = (unsigned char *) v->addr;; inpt += n)
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{
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if (mt_ptr->stream)
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{
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outcp = mt_ptr->buffptr;
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n = (outcp + inlen > mt_ptr->bufftop) ?
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(int)(mt_ptr->bufftop - outcp) : inlen;
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if (n <= 0)
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{
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iomt_vlflush (io_ptr);
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outcp = (unsigned char *) mt_ptr->rec.addr;
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}
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} else
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{
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outcp = (unsigned char *) mt_ptr->rec.addr + mt_ptr->rec.len;
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n = (inlen > outlen) ? outlen : inlen;
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if (mt_ptr->fixed)
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assert (outcp + n <= mt_ptr->bufftop);
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else
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{
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if (outcp + n >= mt_ptr->bufftop)
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{
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iomt_vlflush (io_ptr);
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outcp = (unsigned char *) (mt_ptr->rec.addr + mt_ptr->rec.len);
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}
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}
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}
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memcpy (outcp, inpt, n);
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mt_ptr->buffptr = outcp + n;
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mt_ptr->rec.len += n;
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io_ptr->dollar.x += n;
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if ((inlen -= n) <= 0)
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break;
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if (!mt_ptr->stream)
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{
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iomt_wteol (1, io_ptr);
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outlen = io_ptr->width - mt_ptr->rec.len;
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}
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}
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if (mt_ptr->stream && io_ptr->dollar.x >= io_ptr->width && io_ptr->wrap)
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{
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io_ptr->dollar.y += (io_ptr->dollar.x / io_ptr->width);
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if (io_ptr->length)
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io_ptr->dollar.y %= io_ptr->length;
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io_ptr->dollar.x %= io_ptr->width;
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}
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return;
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}
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