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C/C++ Source or Header  |  1991-06-10  |  2.3 KB  |  94 lines
  1. #include "f2c.h"
  2. #include "fio.h"
  3. integer f_inqu(a) inlist *a;
  4. {    flag byfile;
  5.     int i, n;
  6.     unit *p;
  7.     char buf[256];
  8.     long x;
  9.     if(a->infile!=NULL)
  10.     {    byfile=1;
  11.         g_char(a->infile,a->infilen,buf);
  12. #ifdef MSDOS
  13.         x = access(buf,0) ? -1 : 0;
  14.         for(i=0,p=NULL;i<MXUNIT;i++)
  15.             if(units[i].ufd!=NULL && !strcmp(units[i].ufnm,buf)) {
  16.                 p = &units[i];
  17.                 break;
  18.                 }
  19. #else
  20.         x=inode(buf, &n);
  21.         for(i=0,p=NULL;i<MXUNIT;i++)
  22.             if(units[i].uinode==x
  23.             && units[i].ufd!=NULL
  24.             && units[i].udev == n) {
  25.                 p = &units[i];
  26.                 break;
  27.                 }
  28. #endif
  29.     }
  30.     else
  31.     {
  32.         byfile=0;
  33.         if(a->inunit<MXUNIT && a->inunit>=0)
  34.         {
  35.             p= &units[a->inunit];
  36.         }
  37.         else
  38.         {
  39.             p=NULL;
  40.         }
  41.     }
  42.     if(a->inex!=NULL)
  43.         if(byfile && x != -1 || !byfile && p!=NULL)
  44.             *a->inex=1;
  45.         else *a->inex=0;
  46.     if(a->inopen!=NULL)
  47.         if(byfile) *a->inopen=(p!=NULL);
  48.         else *a->inopen=(p!=NULL && p->ufd!=NULL);
  49.     if(a->innum!=NULL) *a->innum= p-units;
  50.     if(a->innamed!=NULL)
  51.         if(byfile || p!=NULL && p->ufnm!=NULL)
  52.             *a->innamed=1;
  53.         else    *a->innamed=0;
  54.     if(a->inname!=NULL)
  55.         if(byfile)
  56.             b_char(buf,a->inname,a->innamlen);
  57.         else if(p!=NULL && p->ufnm!=NULL)
  58.             b_char(p->ufnm,a->inname,a->innamlen);
  59.     if(a->inacc!=NULL && p!=NULL && p->ufd!=NULL)
  60.         if(p->url)
  61.             b_char("DIRECT",a->inacc,a->inacclen);
  62.         else    b_char("SEQUENTIAL",a->inacc,a->inacclen);
  63.     if(a->inseq!=NULL)
  64.         if(p!=NULL && p->url)
  65.             b_char("NO",a->inseq,a->inseqlen);
  66.         else    b_char("YES",a->inseq,a->inseqlen);
  67.     if(a->indir!=NULL)
  68.         if(p==NULL || p->url)
  69.             b_char("YES",a->indir,a->indirlen);
  70.         else    b_char("NO",a->indir,a->indirlen);
  71.     if(a->infmt!=NULL)
  72.         if(p!=NULL && p->ufmt==0)
  73.             b_char("UNFORMATTED",a->infmt,a->infmtlen);
  74.         else    b_char("FORMATTED",a->infmt,a->infmtlen);
  75.     if(a->inform!=NULL)
  76.         if(p!=NULL && p->ufmt==0)
  77.         b_char("NO",a->inform,a->informlen);
  78.         else b_char("YES",a->inform,a->informlen);
  79.     if(a->inunf)
  80.         if(p!=NULL && p->ufmt==0)
  81.             b_char("YES",a->inunf,a->inunflen);
  82.         else if (p!=NULL) b_char("NO",a->inunf,a->inunflen);
  83.         else b_char("UNKNOWN",a->inunf,a->inunflen);
  84.     if(a->inrecl!=NULL && p!=NULL)
  85.         *a->inrecl=p->url;
  86.     if(a->innrec!=NULL && p!=NULL && p->url>0)
  87.         *a->innrec=ftell(p->ufd)/p->url+1;
  88.     if(a->inblank && p!=NULL && p->ufmt)
  89.         if(p->ublnk)
  90.             b_char("ZERO",a->inblank,a->inblanklen);
  91.         else    b_char("NULL",a->inblank,a->inblanklen);
  92.     return(0);
  93. }
  94.