81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2012 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 "io.h"
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#include "iosp.h"
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#include "iotimer.h"
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#include "stringpool.h"
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#include "op.h"
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#include "ebc_xlat.h"
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GBLREF io_pair io_curr_device;
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GBLREF spdesc stringpool;
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GBLREF io_desc *active_device;
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GBLREF boolean_t gtm_utf8_mode;
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error_def(ERR_TEXT);
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error_def(ERR_RDFLTOOSHORT);
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error_def(ERR_RDFLTOOLONG);
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int op_readfl(mval *v, int4 length, int4 timeout)
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{
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int4 stat; /* status */
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size_t cnt, insize, outsize;
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char *start_ptr, *save_ptr;
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unsigned char *temp_ch;
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int b_length;
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if (timeout < 0)
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timeout = 0;
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/* Length is in units of characters, MAX_STRLEN and allocation unit in stp is bytes. Compute the worst case need in bytes.
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* Worst case, every Unicode char is 4 bytes
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*/
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b_length = (!IS_UTF_CHSET(io_curr_device.in->ichset)) ? length : (length * 4);
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if (0 >= length)
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rts_error(VARLSTCNT(1) ERR_RDFLTOOSHORT);
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/* This check is more useful in "M" mode. For UTF-8 mode, checks have to be done while reading */
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if (MAX_STRLEN < length)
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rts_error(VARLSTCNT(1) ERR_RDFLTOOLONG);
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assert(stringpool.free >= stringpool.base);
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assert(stringpool.free <= stringpool.top);
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v->mvtype = MV_STR;
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v->str.len = 0; /* Nothing kept from any old value */
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ENSURE_STP_FREE_SPACE(b_length + ESC_LEN);
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v->str.addr = (char *)stringpool.free;
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active_device = io_curr_device.in;
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stat = (io_curr_device.in->disp_ptr->readfl)(v, length, timeout);
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if (stringpool.free == (unsigned char *)v->str.addr) /* BYPASSOK */
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stringpool.free += v->str.len; /* see UNIX iott_readfl */
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assert((int4)v->str.len <= b_length);
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assert(stringpool.free <= stringpool.top);
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# if defined(KEEP_zOS_EBCDIC) || defined(VMS)
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if (DEFAULT_CODE_SET != active_device->in_code_set)
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{
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cnt = insize = outsize = v->str.len;
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assert(stringpool.free >= stringpool.base);
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ENSURE_STP_FREE_SPACE(cnt);
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temp_ch = stringpool.free;
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save_ptr = v->str.addr;
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start_ptr = (char *)temp_ch;
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stringpool.free += cnt;
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assert(stringpool.free >= stringpool.base);
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assert(stringpool.free <= stringpool.top);
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ICONVERT(active_device->input_conv_cd, (unsigned char **)&(v->str.addr), &insize, &temp_ch, &outsize);
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v->str.addr = start_ptr;
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}
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# endif
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active_device = 0;
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if (NO_M_TIMEOUT != timeout)
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return (stat);
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return FALSE;
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}
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