/
cirec.c
1274 lines (1113 loc) · 32.1 KB
/
cirec.c
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#include <stdio.h>
#include <string.h>
#include "cisis.h"
#if CICPP
#include <cirec.hpp>
#define CIREC_SOURCE
#include <cirun.hpp>
/* ------------------------- CIREC.HPP --------------------------------- */
#define recallok(irec,nbytes) xrecalloc(nbytes) /* internal use */
#define record(irec,dbnamp,mfn) xrecord(dbnamp,mfn) /* internal use */
#define recread(recp,mfn) xrecread(mfn) /* internal use */
#define recxref(recp,mfn,comb,comp) xrecxref(mfn,comb,comp) /* internal use */
#define nocc(irec,tag) xnocc(tag) /* internal use */
#define fieldn(irec,tag,occ) xfieldn(tag,occ) /* internal use */
#define fieldx(irec,tag,occ) xfieldx(tag,occ) /* internal use */
#define mstsetup xmstsetup /* internal use */
#if MULTI
#define recunlck(irec,option) xrecunlck(option) /* internal use */
#endif
/*#define recisis0 xrecisis0 moved to CISISX */
#define recupdat(crec,irec) xrecupdat() /* internal use */
#define recwrite xrecwrite /* internal use */
#define recwmast xrecwmast /* internal use */
#define recwxref xrecwxref /* internal use */
#define fldupdat(irec,batchp) xfldupdat(batchp) /* internal use */
//#if IFUPDATE
/*#define recreset xrecreset moved to CISISX */
//#endif
//#define recfield xrecfield /* internal use */
/* ---------------------------------------------------------------------- */
#endif /* CICPP */
/* ----------------------------- rec.c ------------------------------ */
#define RECTRACE 0
#define REATRACE 0
#define RERTRACE 0
#define REXTRACE 0
#define REYTRACE 0
#define RESXRACE 02
#define RESTRACE 01111
#if !CICPP
char lastrecread[CIMPL+1] = ""; /* 950724 */
LONGX recxrefb=0; /* recxref() comb */
int recxrefp=0; /* recxref() comp */
int recxrefn=0; /* recxref() flagnew */
int recxrefm=0; /* recxref() flagmod */
FFI recreadl=0; /* force recread() mfrl */
#if IFUPDATE
LONGX recreadb=0; /* force recread() comb = mfbwb */
int recreadp=0; /* force recread() comp = mfbwp */
#endif
#endif /* CICPP */
#if CICPP
#define NO_IREC -1L
#endif /* CICPP */
#if CICPP
RECSTRU :: RECSTRU (CISISX *cxp): cisisxp(cxp),
recnbytes(0L), rectype(0), recdbxp(NULL), recrc(0),
#if MULTI
reclock(0), recwlock(0),
#endif
recgdbl(0), recgdbw(0), recmfp(NULL)
{
if (cisisxp == NULL)
fatal("RECSTRU/cisisxp==NULL");
};
RECSTRU :: RECSTRU (CISISX *cxp,
CONST RECSTRU &other)
{
recnbytes = other.recnbytes;
rectype = other.rectype;
recdbxp = other.recdbxp;
#if MULTI
reclock = other.reclock;
recwlock = other.recwlock;
#endif // MULTI
recgdbl = other.recgdbl;
recgdbw = other.recgdbw;
try {recmfp = (MFUNION *) new char [recnbytes];}
catch (BAD_ALLOC) {fatal("RECSTRU/ALLOC");}
memmove (recmfp,other.recmfp,recnbytes);
cisisxp = cxp;
if (cisisxp == NULL)
fatal("RECSTRU/cisisxp==NULL");
}
RECSTRU :: ~RECSTRU(void)
{
if (recmfp)
delete [] recmfp;
}
#endif /* CICPP */
#if !CICPP
#if ANSI
void recinit(void) /*
------------ */
#else
void recinit() /*
------- */
#endif
/*
inicializa vrecp
*/
{
for (nrecs=maxnrec;nrecs--;)
vrecp[nrecs]=NULL;
nrecs=0;
}
#endif /* CICPP */
#if CICPP
LONGX RECSTRU :: xrecalloc(LONGX nbytes)
#else
LONGX recallok(irec,nbytes)
/*
-------------
abenda se nbytes menor do que primeiro move;
abenda se ja' alocado;
aloca RECHSIZE+nbytes bytes;
aponta por vrecp[irec];
garante inicializacao com zeros;
armazena vrecp[irec]->recnbytes;
retorna irec
*/
LONGX irec; /* indice de vrecp, para ALLOC */
LONGX nbytes; /* tamanho da area util em bytes */
#endif /* CICPP */
{
RECSTRU *recp;
#if CICPP
LONGX irec = NO_IREC;
recp=this;
#else /* CICPP */
if (!nrecs)
recinit();
if (irec < 0 || irec >= maxnrec)
fatal("recallok/index");
if (nrecs >= maxnrec)
fatal("recallok/overflow");
#endif /* CICPP */
if (nbytes < MSNVSPLT)
fatal("recallok/MSNVSPLT");
#if CICPP
if (!recmfp || nbytes != RECnbytes) {
if (recmfp) delete [] recmfp;
try { recmfp = (MFUNION *) new char [nbytes];}
catch (BAD_ALLOC) {recmfp = (MFUNION *)ALLONULL; }
if (recmfp == (MFUNION *)ALLONULL)
fatal("recallok/ALLOC");
}
memset(recmfp,0x00,(size_t)nbytes);
#else /* CICPP */
if (vrecp[irec]) fatal("recallok/again");
if ((RECHSIZE+nbytes) > ALLOMAXV)
fatal("recallok/ALLOMAXV/RECHSIZE+nbytes");
recp=(RECSTRU *)ALLOC((ALLOPARM)(RECHSIZE+nbytes));
if (recp == (RECSTRU *)ALLONULL)
fatal("recallok/ALLOC");
vrecp[irec]=recp;
nrecs++;
memset(recp,0x00,(size_t)(RECHSIZE+nbytes));
#endif /* CICPP */
RECnbytes=nbytes;
RECtype=0; /* init */
#if MULTI
RECwlock=WUNLOCK; /* 28/07/94 */
#endif
#if REATRACE
#if CICPP
printf("recallok - recp=%p RECtype=%d RECnbytes=%"_LD_"\n",
recp,RECtype,RECnbytes);
#else
printf("recallok - vrecp[%"_LD_"]=%p nrecs=%"_LD_" RECtype=%d RECnbytes=%"_LD_"\n",
irec,vrecp[irec],nrecs,RECtype,RECnbytes);
#endif /* CICPP */
#endif
return(irec);
}
#if CICPP
LONGX RECSTRU :: xrecord(char *dbnamp,
LONGX mfn)
#else /* CICPP */
LONGX record(irec,dbnamp,mfn) /*
-----------
inicializa vrecp, se necessario;
aloca o registro irec, se ainda nao alocado;
seta dbxp com o resultado de dbxstorp(dbnamp);
le o registro mfn da base de dados descrita em dbxp;
armazena retorno de recread() em RECrc;
retorna irec
*/
LONGX irec; /* indice de vrecp, para store */
char *dbnamp; /* ptr nome base de dados a ler */
LONGX mfn; /* numero do registro a ler */
#endif /* CICPP */
{
RECSTRU *recp;
DBXSTRU *dbxp;
#if RECGIZM
VGIZPSTRU *vgizmap;
#endif
#if RECTRACE
FFI i,n;
#endif
char *p;
#if CICPP
LONGX irec = NO_IREC;
#endif
/* forca carga de rec_maxmfrl - AOT, 02/06/99 */
p=dbxcipar(NULL,"maxmfrl",'='); if (dbxcipok) sscanf(p,"%"_LD_,&rec_maxmfrl);
#if CICPP
recp=this;
if (!recmfp) xrecalloc(rec_maxmfrl);
#else /* CICPP */
if (!nrecs)
recinit();
recp=vrecp[irec];
if (!recp)
recp=vrecp[recallok(irec,rec_maxmfrl)];
#endif /* CICPP */
dbxp=dbxstorp(dbnamp);
#if BEFORE950724
#else
if (strcmp(dbnamp,lastrecread)) {
if (lastrecread[0]) {
DBXSTRU *lastdbxp=dbxsrchp(lastrecread); /* "" - 22/01/97 */
if (lastdbxp) {
if (lastdbxp->dbxmflush) mstflush(lastrecread); else
if (lastdbxp->dbxmclose) mstclose(lastdbxp);
}
}
strcpy(lastrecread,dbnamp);
}
#endif
#if BEFOREGIZMO
if (RECdbxp == dbxp)
if (MFRmfn == mfn)
return(irec);
#endif
RECdbxp=dbxp;
#if RECTRACE
printf("record - irec=%"_LD_" recp=%p dbxp=%p=%s mfn=%"_LD_"\n",
irec,recp,dbxp,dbnamp,mfn);
#endif
recread(recp,mfn);
if (RECtype == TYPEMFR) {
#if RECXPND
if (RDBxpn01)
#if CICPP
recxpnmo(recp);
#else
recxpnmo(irec); /* v4.2 */
#endif /* CICPP */
#endif
#if RECGIZM
for (vgizmap=RDBvgzrp; vgizmap; vgizmap=vgizmap->nextp)
#if CICPP
recgizmo(cisisxp,recp,vgizmap);
#else
recgizmo(irec,vgizmap); /* v3.4 */
#endif /* CICPP */
#endif
#if RECDECO
if (RDBvderp) {
#if CICPP
recdecex(cisisxp, recp);
#else
recdecex(irec); /* decod */
#endif /* CICPP */
}
#endif
}
#if RECTRACE
if (RECtype == TYPEMF0) {
printf("record - RECrc=%d Ctlmfr: %"_LD_"%"_LD_"%"_LD_"%d,%d,%"_LD_"%"_LD_"%"_LD_"%"_LD_"\n",
RECrc,
MF0ctlmfn,MF0nxtmfn,MF0nxtmfb,MF0nxtmfp,
MF0mftype,MF0reccnt,MF0mfcxx1,MF0mfcxx2,MF0mfcxx3);
}
else {
printf("record - RECrc=%d Leader: %"_LD_",%d,%"_LD_",%d,%d,%d,%d\n",
RECrc,MFRmfn,MFRmfrl,MFRmfbwb,MFRmfbwp,MFRbase,MFRnvf,MFRstatus);
#if RECTRACE
if (RECrc == RCNORMAL || RECrc == RCLDEL)
for (i=0;i<MFRnvf;i++) {
printf("record - tag[%d],pos[%d],len[%d]=%d,%d,%d\n",
i,i,i,MFRdir[i].tag,MFRdir[i].pos,MFRdir[i].len);
for (p=FIELDP(i), n=DIRlen(i); n--;)
putchar(*p++);
putchar('\n');
}
#endif
}
#endif
#define RECMSTFLUSH 0
#if RECMSTFLUSH /* 950724 */
mstflush(DBXname);
#endif
return(irec);
}
#if CICPP
int RECSTRU :: xrecread(LONGX mfn)
#else /* CICPP */
int recread(recp,mfn) /*
-----------
seta dbxp;
obtem ptr para .mst e seu (mfn) status em .xrf;
se Active / Logical deleted:
chama dbxopen para dbxp->dbxname+.mst, se necessario;
aloca dbxp->dbxmsibp, se ainda nao alocado;
posiciona e le .mst blk;
move mfr neversplit para recp->recmf.mx;
move possivel para recp->recmf.mx[MSNVSPLT];
le restante ja' em recp->recmf.mx[MSNVSPLT+i];
retorna gdb record rc ou aborta
*/
RECSTRU *recp; /* elemento de vrecp, para store */
LONGX mfn; /* numero do registro a ler */
#endif /* CICPP */
{
DBXSTRU *dbxp;
FFI n,n1,n2,nr,moveok;
#if VAX
FFI left;
int d;
#endif
LONGX comb; /* gdb getmfr comb */
int comp; /* gdb getmfr comp */
char *p,*inp,*msyyp; /* v3.3 */
off_t xseek;
int fd,rc;
#if CNV_PCBINUM
FFI wlen;
#endif
#if MULTI
#if CNV_PCFILES
char unibuff[MSNVSPLT]; /* CNV_PCFILES/recread - EWL/DE/RL */
#endif
#endif
#if CICPP
RECSTRU *recp = this;
#endif /* CICPP */
dbxp=RECdbxp;
#if RERTRACE
printf("recread - recp=%p dbxp=%p mfn=%"_LD_"\n",recp,dbxp,mfn);
#endif
#if CICPP
recp->xmstsetup(DBXname,0L,0L);
#else
mstsetup(DBXname,0L,0L);
#endif /* CICPP */
if (strcmp(DBXname,"null") == 0) {
if (mfn == 0) {
memset(MFX,0x00,sizeof(M0STRU));
MF0nxtmfn=1L;
RECtype=TYPEMF0;
}
else {
memset(MFX,0x00,LEADER);
MFRmfn=mfn; MFRmfrl=MFRbase=LEADER;
RECtype=TYPEMFR;
}
return(RECrc=RCNORMAL);
}
RECgdbl=RECgdbw=0;
#if MULTI
#if RERTRACE
printf("recread - %s/%"_LD_" lock=%d\n",DBXname,mfn,REClock);
#endif
/* if operation is single user then reset locking option */
if (DBXnetws == MONONETS) REClock=NOLOCK;
rc=RCNORMAL;
if (REClock) {
dbxopenw(DBXname,DBXname,xx1extp,&DBXxropn,&DBXxropw,"recread/xropn/w");
dbxopenw(DBXname,DBXname,mx1extp,&DBXmsopn,&DBXmsopw,"recread/msopn/w");
}
#endif
if (mfn == 0) {
RECtype=TYPEMF0;
comb=1; comp=0;
rc=RCNORMAL;
}
else {
RECtype=TYPEMFR;
#if IFUPDATE
if (recreadb) {
rc=RECrc=RCNORMAL;
comb=recreadb; recreadb=0;
comp=recreadp; recreadp=0;
}
else
#endif
if ((rc=recxref(recp,mfn,&comb,&comp)) == RCEOF || rc == RCPDEL) {
MFRmfn=mfn;
MFRmfrl=LEADER;
MFRmfbwb=0; MFRmfbwp=0;
MFRbase=LEADER;
MFRnvf=0;
MFRstatus=DELETED;
#if MULTI
if (REClock) {
if (multrace)
printf("<r> %s/%"_LD_" is inexistent or beyond EOF\n",
DBXname,mfn);
}
#endif
return(RECrc=rc);
}
}
#if RERTRACE
printf("recread - recp=%p dbxp=%p mfn=%"_LD_" comb=%"_LD_" comp=%d rc=%d\n",
recp,dbxp,mfn,comb,comp,rc);
#endif
if ((msyyp=DBXmsyyp) == NULL) /* v3.3 */
if ((fd=DBXmsopn) <= 0)
fatal("recread/DBXmsopn");
if (!DBXmsibp)
fatal("recread/DBXmsibp");
#if MULTI
/* step 1: lock the .mst file */
if (REClock) {
/* initial check */
if (mfn == 0) {
if (REClock == EWLOCK) { /* Great Richard! */
/* user's exclusive write lock must be off */
if (DBXewlxx) fatal("recread/lock/exclusive write lock is on");
}
else
/* user's data entry lock must be off */
if (DBXdelxx) fatal("recread/lock/data entry lock is on");
}
else {
/* user's data entry lock must be on */
if (!DBXdelxx) fatal("recread/lock/data entry lock is off");
}
/* .mst file lock: lock */
if (multrace) printf("<r> %s .mst lock \n",DBXname);
if (dbxflock(dbxp,"M")) {
if (multrace) printf("<r> %s .mst lock/denied \n",DBXname);
if (dbxewlrc) return(RECrc=RCLOCK);
fatal("recread/lock/file lock");
}
/* wait another's exclusive write lock */
if (dbxwlock(dbxp,MFX,dbxwloop)) {
if (multrace) printf("<r> %s .mst ewl is on !!!\n",DBXname);
if (dbxewlrc) return(RECrc=RCLOCK);
fatal("recread/lock/must wait ewl");
}
if (REClock == EWLOCK)
/* check another's DEL (allow user's DEL) */
if (MF0mfcxx2 > 1 || (MF0mfcxx2 == 1 && !DBXdelxx)) {
if (multrace) printf("<r> %s .mst del is on !!!\n",DBXname);
if (dbxulock(dbxp,"M")) fatal("recread/lock/file unlock/del");
return(RECrc=RCLOCK);
}
}
#endif
n1=MSBSIZ; /* ok */
#if MULTI
if (DBXnetws != MONONETS || comb != DBXmsibp->msbufn) {
#else
if (comb != DBXmsibp->msbufn) {
#endif
xseek=(((off_t)(comb-1))<<MSBSHIFT);
if (msyyp == NULL) { /* v3.3 */
#if RERTRACE
printf("recread - fd,lseek=%"_LD_",%"P_OFF_T"\n",fd,(LONG_LONG)xseek);
#endif
if (LSEEK64(fd,xseek,SEEK_SET) != xseek)
fatal("recread/lseek");
if ((n1=CIREAD(fd,DBXmsibp->msbuff,MSBSIZ)) < MSBSIZ)
fatal("recread/read");
}
else {
#if RERTRACE
printf("recread - msyyp=%p fd,lseek=%"P_OFF_T",%"_LD_"\n",msyyp,fd,(LONG_LONG)xseek);
#endif
memmove(DBXmsibp,msyyp+xseek,MSBSIZ);
}
DBXmsibp->msbufn=comb;
}
inp=DBXmsibp->msbuff+comp;
if (RECtype == TYPEMF0) {
#if RERTRACE
printf("recread- RECtype=%d n1=%d n=%d MFX=%p inp=%p\n",
RECtype,n1,sizeof(M0STRU),MFX,inp);
#endif
if (n1 < (n=sizeof(M0STRU))) fatal("recread/block");
memmove(MFX,inp,n); /* ok */
#if CNV_PCBINUM
ConvertMST_CTLSTRUCT(MFX);
if (rectrace) prtcontrol(recp,DBXname);
#endif
if (MF0ctlmfn != mfn) fatal("recread/check/ctlmfn");
DBXmsmfn=MF0nxtmfn; /* 31/12/90 */
#if MULTI
/* step 2: perform a DEL or an EWL lock (MF0) */
if (REClock) {
if (REClock == EWLOCK) { /* EWL */
MF0mfcxx3++;
DBXewlxx++;
}
else { /* DEL */ /* is DELOCK ? */
MF0mfcxx2++;
DBXdelxx++;
}
if (LSEEK64(fd,0L,SEEK_SET) != 0) fatal("recread/lock/lseek/ctl");
#if CNV_PCBINUM
memmove(cnv_pcbuff,MFX,sizeof(M0STRU));
ConvertMST_CTLSTRUCT(cnv_pcbuff);
if (CIWRITE(fd,cnv_pcbuff,sizeof(M0STRU)) != sizeof(M0STRU))
#else
if (CIWRITE(fd,MFX,sizeof(M0STRU)) != sizeof(M0STRU))
#endif
fatal("recread/lock/write/ctl");
/* update input buffer */
((M0STRU *)DBXmsibp)->m0mfcxx2=MF0mfcxx2;
#if BEFORE20000413
#else
((M0STRU *)DBXmsibp)->m0mfcxx3=MF0mfcxx3;
#endif
/* .mst file lock: unlock */
if (multrace) printf("<r> %s .mst unlock [%s on] \n",
DBXname,(REClock == EWLOCK)?"EWL":"DEL");
if (dbxulock(dbxp,"M")) fatal("recread/lock/file unlock/ctl");
}
#endif
#if DBXMSTXL /* reseta apos fazer o DE/EWL, AOT 18/06/2002 */
/* DBXmstxl is assigned by mstsetup() */
MF0mftype = MF0mftype & 0x00FF;
if (rectrace) printf("+++ recread - %s/mstxl=%d\n",DBXname,DBXmstxl);
#endif
return(RECrc=RCNORMAL); /* MULTI ok */
}
#if CNV_PCBINUM
memmove(cnv_pcbuff,inp,MSNVSPLT);
ConvertMST_LEADER(cnv_pcbuff,0,MSNVSPLT);
p=inp; /* save inp */
inp=cnv_pcbuff;
#endif
#if CNV_PCFILES
memmove(MFX+0,inp+0,4); /* mfn= */ /* unibuff */
memmove(MFX+4,inp+6,4); /* mfbwb= */ /* unibuff */
memmove(MFX+8,inp+4,2); /* mfrl= */ /* unibuff */
memmove(MFX+10,inp+10,MSNVSPLT-10); /* unibuff */
if (rectrace) prtleader(recp,mfn);
#else
memmove(MFX,inp,MSNVSPLT);
#endif
#if CNV_PCBINUM
inp=p; /* restore inp */
#endif
p=MFX+MSNVSPLT; inp+=MSNVSPLT; moveok=MSNVSPLT;
#if MULTI
/* step 3: process existing record lock */
if (MFRmfrl > (FFI)MFRL_MAX) {
if (multrace)
printf("<r> %s/%"_LD_" mfrl=%04x=%d \n",DBXname,mfn,MFRmfrl,MFRmfrl);
RECgdbl=0; RECgdbw=MFRmfrl;
MFRmfrl=(FFI)0-MFRmfrl;
if (multrace)
printf("<r> %s/%"_LD_" mfrl=%04x=+%d\n",DBXname,mfn,RECgdbl,MFRmfrl);
if (REClock) rc=RCLOCK;
}
#endif
n=MFRmfrl; /* to read */
if (recreadl) {
if (recreadl == 1) n=LEADER; /* leader */
else if (recreadl == 2) n=MFRbase; /* + dir */
else n=recreadl; /* waall! */
#if CNV_PCBINUM
wlen=recreadl;
#endif
recreadl=0;
}
if (n < (FFI)LEADER || n > (FFI)RECnbytes) {
#if RERTRACE
if (rectrace) {
memset(p,0x00,LEADER-MSNVSPLT);
prtleader(recp,mfn);
}
#endif
fatal("recread/check/mfrl");
}
n-=moveok; /* more */
n2=n1-comp-moveok; /* left in buffer */
if (n < n2) n2=n; /* this */
n-=n2; /* next */
#if RERTRACE
printf("recread - moveok=%d n=%d n2=%d p=%p \n",moveok,n,n2,p);
#endif
if (n2) {
if (n2 <= 0) fatal("recread/n2");
memmove(p,inp,n2); p+=n2; moveok+=n2;
#if RERTRACE
printf("recread - moveok=%d n=%d n2=%d p=%p \n",moveok,n,n2,p);
#endif
}
if (n) {
if (n <= 0) fatal("recread/n");
xseek=(((off_t)(comb-0))<<MSBSHIFT);
#if RERTRACE
printf("recread - fd,lseek2=%"_LD_",%"P_OFF_T"\n",fd,(LONG_LONG)xseek);
#endif
if (msyyp == NULL) { /* v3.3 */
if (LSEEK64(fd,xseek,SEEK_SET) != xseek) fatal("recread/lseek2");
nr=n;
#if VAX
for (left=nr; left > 0; ) {
nr = (left > MSBSIZ) ? MSBSIZ : left;
#endif
if ((n2=CIREAD(fd,p,nr)) != nr) {
if (rectrace)
printf("\n*** mfn=%"_LD_" seek=%"_LD_"/%d=%"P_OFF_T" read=%d/%d\n",
mfn,comb,comp,(LONG_LONG)xseek,nr,n2);
fatal("recread/read2");
}
#if VAX
left-=n2; p+=n2;
}
#endif
}
else {
#if RERTRACE
printf("recread - p=%p msyyp=%p fd,lseek2=%"_LD_",%"P_OFF_T"\n",p,msyyp,fd,(LONG_LONG)xseek);
#endif
memmove(p,msyyp+xseek,n);
}
}
#if CNV_PCBINUM
ConvertMST_LEADER(MFX,MSNVSPLT,LEADER); /* CNV_PCFILES ok */
#endif
#if VAX
d = MFRbase - (LEADER + MFRnvf*sizeof(DIRSTRU));
if (d) if (d < 0 || d > sizeof(int)) {
if (rectrace) prtleader(recp,mfn);
#else
if (MFRbase != LEADER + MFRnvf*sizeof(DIRSTRU)) {
#endif
#if RERTRACE
if (rectrace) prtleader(recp,mfn);
#endif
fatal("recread/check/base");
}
#if CNV_PCBINUM
if (wlen != 1) ConvertMST_DIR(MFX,MFRnvf);
#endif
#if MULTI
/* step 4: perform a record lock (MFR) */
if (REClock) {
if (rc != RCLOCK) {
/* mfr lock */
MFRmfrl=(FFI)0-MFRmfrl; /* set */
xseek=(((off_t)(comb-1))<<MSBSHIFT); xseek+=comp;
if (LSEEK64(fd,xseek,SEEK_SET) != xseek)
fatal("recread/lock/lseek/mfr");
#if CNV_PCFILES
memmove(unibuff,MFX,MSNVSPLT);
memmove(MFX+0,unibuff+0,4); /* mfn= */
memmove(MFX+6,unibuff+4,4); /* mfbwb= */
memmove(MFX+4,unibuff+8,2); /* mfrl= */
#endif
#if CNV_PCBINUM
memmove(cnv_pcbuff,MFX,MSNVSPLT);
ConvertMST_LEADER(cnv_pcbuff,0,MSNVSPLT);
if (CIWRITE(fd,cnv_pcbuff,MSNVSPLT) != MSNVSPLT)
#else
if (CIWRITE(fd,MFX,MSNVSPLT) != MSNVSPLT)
#endif
fatal("recread/lock/write/mfr");
#if CNV_PCFILES
memmove(MFX,unibuff,MSNVSPLT);
#endif
RECgdbl=RECgdbw=MFRmfrl;
MFRmfrl=(FFI)0-MFRmfrl; /* reset */
/* update input buffer */
if (comb != DBXmsibp->msbufn) fatal("recread/lock/msbufn");
p=(char *)DBXmsibp; p+=comp;
((M1STRU *)p)->m1mfrl=RECgdbl;
}
/* .mst file lock: unlock */
if (multrace)
if (rc == RCLOCK)
printf("<r> %s .mst unlock [RL denied] \n",DBXname);
else
printf("<r> %s .mst unlock [RL on] \n",DBXname);
if (dbxulock(dbxp,"M")) fatal("recread/lock/file unlock/mfr");
}
#endif
return(RECrc=rc);
}
#if CICPP
int RECSTRU :: xrecxref(LONGX mfn,
LONGX *comb,
int *comp)
#else /* CICPP */
int recxref(recp,mfn,comb,comp) /*
-----------
seta dbxp;
chama dbxopen para dbxp->dbxname+.xrf se necessario;
aloca dbxp->dbxxribp, se ainda nao alocado;
abenda se mfn < 1;
calcula .xrf blk = f(mfn);
posiciona e le .xrf blk, se nao o carregado;
seta *comb e *comp;
retorna gdb record rc
*/
RECSTRU *recp; /* elemento de vrecp, para info */
LONGX mfn; /* numero do registro a ler */
LONGX *comb; /* block number of MF block containing the rec */
int *comp; /* offset in block of 1st char position of MFR */
#endif /* CICPP */
{
DBXSTRU *dbxp;
int rc;
FFI n;
LONGX newpos;
LONGX xrftiv;
LONGX xrftiva;
off_t xbyte;
char *xryyp; /* v3.3 */
#if CICPP
RECSTRU *recp = this;
#endif /* CICPP */
dbxp=RECdbxp;
if ((xryyp=DBXxryyp) == NULL) /* v3.3 */
if (!DBXxropn)
fatal("recxref/DBXxropn");
if (!DBXxribp)
fatal("recxref/DBXxribp");
#if REXTRACE
printf("recxref - DBXxribp->xrxrpos=%"_LD_"\n",DBXxribp->xrxrpos);
#endif
if (mfn < 1)
fatal("recxref/mfn");
if (DBXmsmfn <= 0) /* v3.0 */
fatal("recxref/DBXmsmfn");
newpos=(mfn+XRMAXTV1)/XRMAXTIV;
#if MULTI
if (DBXnetws != MONONETS || newpos != labs(DBXxribp->xrxrpos)) {
#else
if (newpos != labs(DBXxribp->xrxrpos)) {
#endif
if (mfn > DBXmsmfn) { /* 127 ok */
DBXxribp->xrxrpos = -newpos;
xrftiv = (0)*XRXDIVIDE + (0); /* inexistent records */
for (n=0; n < XRMAXTIV; )
DBXxribp->xrmfptr[n++]=xrftiv;
#if REXTRACE
printf("recxref - para mfn=%"_LD_" xrpos=%"_LD_" xrftiv=%"_LD_"\n",mfn,
DBXxribp->xrxrpos,xrftiv);
#endif
}
else {
xbyte=((off_t)(newpos-1))<<XRSHIFT;
if (xryyp == NULL) {
if (LSEEK64(DBXxropn,xbyte,SEEK_SET) != xbyte)
fatal("recxref/lseek");
#if REXTRACE
printf("recxref - mfn=%"_LD_" newpos=%"_LD_" lseek=%"P_OFF_T" DBXmsmfn=%"_LD_"\n",
mfn,newpos,(LONG_LONG)xbyte,DBXmsmfn);
#endif
if ((n=CIREAD(DBXxropn,(char *)DBXxribp,XRBSIZ)) != XRBSIZ)
fatal("recxref/read");
}
else {
#if REXTRACE
printf("recxref - xryyp=%p mfn=%"_LD_" newpos=%"_LD_" lseek=%"P_OFF_T" DBXmsmfn=%"_LD_"\n",
xryyp,mfn,newpos,(LONG_LONG)xbyte,DBXmsmfn);
#endif
xryyp+=(xbyte);
n=XRBSIZ;
memmove((char *)DBXxribp,xryyp,(size_t)n);
}
#if CNV_PCBINUM
ConvertXRF_REC((char *)DBXxribp);
#endif
}
if (labs(DBXxribp->xrxrpos) != newpos)
fatal("recxref/xrfpos");
}
xrftiv=DBXxribp->xrmfptr[(mfn-1)%XRMAXTIV];
xrftiva=labs(xrftiv);
#if DBXMSTXL
*comb = xrftiv / (XRXDIVIDE>>DBXmstxl);
*comp = xrftiva & (XRXMASK>>DBXmstxl);
*comp = *comp << DBXmstxl;
recxrefn = xrftiva & (XRXMASKN>>DBXmstxl);
recxrefm = xrftiva & (XRXMASKU>>DBXmstxl);
recxrefn = recxrefn<<DBXmstxl; /* 1024 */
recxrefm = recxrefm<<DBXmstxl; /* 512 */
#else
*comb = xrftiv / XRXDIVIDE;
*comp = xrftiva & XRXMASK;
recxrefn = xrftiva & XRXMASKN;
recxrefm = xrftiva & XRXMASKU;
#endif
#if 1 /* REXTRACE */
if (rectrace)
printf("recxref - mfn=%"_LD_" xrftiv=%"_LD_",%08lx comb=%"_LD_" comp=%d (n=%d m=%d)\n",
mfn,xrftiv,xrftiv,*comb,*comp,recxrefn,recxrefm);
#endif
if (*comp+MSNVSPLT > MSBSIZ)
fatal("recxref/comp+MSNVSPLT");
if (*comb == 0)
if (*comp != 0)
fatal("recxref/comb=0/comp");
if (*comb != 0)
if (*comb > 0)
rc=RCNORMAL; /* Record Active */
else {
rc=RCLDEL; /* Record Logical Deleted */
if (*comb == -1)
if (*comp == 0)
rc=RCPDEL; /* Record Physical Deleted */
*comb= -(*comb);
}
else
rc=RCEOF; /* End of File */
#if REXTRACE
printf("recxref - xrftiv=%"_LD_,"%08lx comb=%"_LD_" comp=%d rc=%d\n",
xrftiv,xrftiv,*comb,*comp,rc);
printf("recxref - flagnew=%d flagmod=%d\n",recxrefn,recxrefm);
#endif
recxrefb = *comb;
recxrefp = *comp;
return(rc);
}
/* ----------------------------- fld.c ------------------------------ */
#define FLDTRACE 0
#if CICPP
int RECSTRU :: xnocc(int tag)
#else /* CICPP */
int nocc(irec,tag) /*
--------
seta recp=vrec[irec];
aponta inicio do diretorio do registro recp;
pesquisa sequencialmente todas as entradas;
retorna o numero de ocorrencias desse tag
*/
LONGX irec; /* indice de vrecp */
int tag; /* tag field */
#endif /* CICPP */
{
RECSTRU *recp; /* elemento de vrecp */
int loop,n;
DIRSTRU *dirp;
#if CICPP
recp=this;
#else /* CICPP */
recp=vrecp[irec];
#endif /* CICPP */
for (n=0, dirp=MFRdir, loop=MFRnvf; loop--; dirp++) {
if (dirp->tag == tag) n++;
#if FLDTRACE
printf("nocc - recp=%p tag=%d loop=%d dirp=%p dirp->tag=%d n=%d\n",
recp,tag,loop,dirp,dirp->tag,n);
#endif
}
#if FLDTRACE
printf("nocc - recp=%p tag=%d n=%d\n",
recp,tag,n);
#endif
return(n);
}
#if CICPP
int RECSTRU :: xfieldn(int tag,
int occ)
#else /* CICPP */
int fieldn(irec,tag,occ) /*
----------
seta recp=vrec[irec];
aponta inicio do diretorio do registro recp;
pesquisa sequencialmente as entradas;
retorna zero ou o numero de ordem dessa ocorrencia