fis-gtm/sr_port/collseq.c

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/****************************************************************
* *
* Copyright 2001, 2011 Fidelity Information Services, Inc *
* *
* 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 "gtm_string.h"
#include "io.h"
#include "iosp.h"
#include "collseq.h"
#include "error.h"
#include "trans_log_name.h"
#include "gtm_logicals.h"
int find_local_colltype(void)
{
int lct, status;
char transbuf[MAX_TRANS_NAME_LEN];
mstr lognam, transnam;
lognam.len = SIZEOF(LCT_PREFIX) - 1;
lognam.addr = LCT_PREFIX;
status = TRANS_LOG_NAME(&lognam, &transnam, transbuf, SIZEOF(transbuf), do_sendmsg_on_log2long);
if (SS_NORMAL != status)
return 0;
lct = asc2i((uchar_ptr_t)transnam.addr, transnam.len);
return lct >= MIN_COLLTYPE && lct <= MAX_COLLTYPE ? lct : 0;
}
collseq *ready_collseq(int act)
{
unsigned char filespec[SIZEOF(CT_PREFIX) + 4]; /* '4' to hold the chars in the max allowable
* collation sequence (255) plus the terminating null */
unsigned char *fsp;
collseq temp_csp, *csp;
mstr fspec;
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
/* Validate the alternative collating type (act) */
if (!(act >= 1 && act <= MAX_COLLTYPE))
return (collseq*)NULL;
/* Search for record of the collating type already being mapped in. */
for (csp = TREF(collseq_list); csp != NULL && act != csp->act; csp = csp->flink)
;
if (NULL == csp)
{
/* If not found, create a structure and attempt to map in the collating support package.*/
temp_csp.act = act;
temp_csp.flink = TREF(collseq_list);
memcpy(filespec, CT_PREFIX, SIZEOF(CT_PREFIX));
fsp = i2asc(&filespec[SIZEOF(CT_PREFIX) - 1], act);
*fsp = 0;
fspec.len = INTCAST(fsp - filespec);
fspec.addr = (char *)filespec;
if (!map_collseq(&fspec, &temp_csp))
return NULL;
csp = (collseq *) malloc(SIZEOF(collseq));
*csp = temp_csp;
TREF(collseq_list) = csp;
}
return csp;
}