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Language/OS - Multiplatform Resource Library
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LANGUAGE OS.iso
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f2c
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may_5_92.lha
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f2c.VMay_5_1992
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libI77
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inquire.c
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C/C++ Source or Header
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1992-05-07
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2KB
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96 lines
#include "f2c.h"
#include "fio.h"
integer f_inqu(a) inlist *a;
{ flag byfile;
int i, n;
unit *p;
char buf[256];
long x;
if(a->infile!=NULL)
{ byfile=1;
g_char(a->infile,a->infilen,buf);
#ifdef MSDOS
x = access(buf,0) ? -1 : 0;
for(i=0,p=NULL;i<MXUNIT;i++)
if(units[i].ufd != NULL
&& units[i].ufnm != NULL
&& !strcmp(units[i].ufnm,buf)) {
p = &units[i];
break;
}
#else
x=inode(buf, &n);
for(i=0,p=NULL;i<MXUNIT;i++)
if(units[i].uinode==x
&& units[i].ufd!=NULL
&& units[i].udev == n) {
p = &units[i];
break;
}
#endif
}
else
{
byfile=0;
if(a->inunit<MXUNIT && a->inunit>=0)
{
p= &units[a->inunit];
}
else
{
p=NULL;
}
}
if(a->inex!=NULL)
if(byfile && x != -1 || !byfile && p!=NULL)
*a->inex=1;
else *a->inex=0;
if(a->inopen!=NULL)
if(byfile) *a->inopen=(p!=NULL);
else *a->inopen=(p!=NULL && p->ufd!=NULL);
if(a->innum!=NULL) *a->innum= p-units;
if(a->innamed!=NULL)
if(byfile || p!=NULL && p->ufnm!=NULL)
*a->innamed=1;
else *a->innamed=0;
if(a->inname!=NULL)
if(byfile)
b_char(buf,a->inname,a->innamlen);
else if(p!=NULL && p->ufnm!=NULL)
b_char(p->ufnm,a->inname,a->innamlen);
if(a->inacc!=NULL && p!=NULL && p->ufd!=NULL)
if(p->url)
b_char("DIRECT",a->inacc,a->inacclen);
else b_char("SEQUENTIAL",a->inacc,a->inacclen);
if(a->inseq!=NULL)
if(p!=NULL && p->url)
b_char("NO",a->inseq,a->inseqlen);
else b_char("YES",a->inseq,a->inseqlen);
if(a->indir!=NULL)
if(p==NULL || p->url)
b_char("YES",a->indir,a->indirlen);
else b_char("NO",a->indir,a->indirlen);
if(a->infmt!=NULL)
if(p!=NULL && p->ufmt==0)
b_char("UNFORMATTED",a->infmt,a->infmtlen);
else b_char("FORMATTED",a->infmt,a->infmtlen);
if(a->inform!=NULL)
if(p!=NULL && p->ufmt==0)
b_char("NO",a->inform,a->informlen);
else b_char("YES",a->inform,a->informlen);
if(a->inunf)
if(p!=NULL && p->ufmt==0)
b_char("YES",a->inunf,a->inunflen);
else if (p!=NULL) b_char("NO",a->inunf,a->inunflen);
else b_char("UNKNOWN",a->inunf,a->inunflen);
if(a->inrecl!=NULL && p!=NULL)
*a->inrecl=p->url;
if(a->innrec!=NULL && p!=NULL && p->url>0)
*a->innrec=ftell(p->ufd)/p->url+1;
if(a->inblank && p!=NULL && p->ufmt)
if(p->ublnk)
b_char("ZERO",a->inblank,a->inblanklen);
else b_char("NULL",a->inblank,a->inblanklen);
return(0);
}