libf2c/libI77/inquire.c

   1 #include "config.h"
   2 #include "f2c.h"
   3 #include "fio.h"
   4 #include <string.h>
   5 #ifdef KR_headers
   6 integer f_inqu(a) inlist *a;
   7 #else
   8 #if defined (MSDOS) && !defined (GO32)
   9 #undef abs
  10 #undef min
  11 #undef max
  12 #include "io.h"
  13 #endif
  14 integer f_inqu(inlist *a)
  15 #endif
  16 {       flag byfile;
  17         int i, n;
  18         unit *p;
  19         char buf[256];
  20         long x;
  21         if (f__init & 2)
  22                 f__fatal (131, "I/O recursion");
  23         if(a->infile!=NULL)
  24         {       byfile=1;
  25                 g_char(a->infile,a->infilen,buf);
  26 #ifdef NON_UNIX_STDIO
  27                 x = access(buf,0) ? -1 : 0;
  28                 for(i=0,p=NULL;i<MXUNIT;i++)
  29                         if(f__units[i].ufd != NULL
  30                          && f__units[i].ufnm != NULL
  31                          && !strcmp(f__units[i].ufnm,buf)) {
  32                                 p = &f__units[i];
  33                                 break;
  34                                 }
  35 #else
  36                 x=f__inode(buf, &n);
  37                 for(i=0,p=NULL;i<MXUNIT;i++)
  38                         if(f__units[i].uinode==x
  39                         && f__units[i].ufd!=NULL
  40                         && f__units[i].udev == n) {
  41                                 p = &f__units[i];
  42                                 break;
  43                                 }
  44 #endif
  45         }
  46         else
  47         {
  48                 byfile=0;
  49                 if(a->inunit<MXUNIT && a->inunit>=0)
  50                 {
  51                         p= &f__units[a->inunit];
  52                 }
  53                 else
  54                 {
  55                         p=NULL;
  56                 }
  57         }
  58         if(a->inex!=NULL)
  59                 if(byfile && x != -1 || !byfile && p!=NULL)
  60                         *a->inex=1;
  61                 else *a->inex=0;
  62         if(a->inopen!=NULL)
  63                 if(byfile) *a->inopen=(p!=NULL);
  64                 else *a->inopen=(p!=NULL && p->ufd!=NULL);
  65         if(a->innum!=NULL) *a->innum= p-f__units;
  66         if(a->innamed!=NULL)
  67                 if(byfile || p!=NULL && p->ufnm!=NULL)
  68                         *a->innamed=1;
  69                 else    *a->innamed=0;
  70         if(a->inname!=NULL)
  71                 if(byfile)
  72                         b_char(buf,a->inname,a->innamlen);
  73                 else if(p!=NULL && p->ufnm!=NULL)
  74                         b_char(p->ufnm,a->inname,a->innamlen);
  75         if(a->inacc!=NULL && p!=NULL && p->ufd!=NULL)
  76                 if(p->url)
  77                         b_char("DIRECT",a->inacc,a->inacclen);
  78                 else    b_char("SEQUENTIAL",a->inacc,a->inacclen);
  79         if(a->inseq!=NULL)
  80                 if(p!=NULL && p->url)
  81                         b_char("NO",a->inseq,a->inseqlen);
  82                 else    b_char("YES",a->inseq,a->inseqlen);
  83         if(a->indir!=NULL)
  84                 if(p==NULL || p->url)
  85                         b_char("YES",a->indir,a->indirlen);
  86                 else    b_char("NO",a->indir,a->indirlen);
  87         if(a->infmt!=NULL)
  88                 if(p!=NULL && p->ufmt==0)
  89                         b_char("UNFORMATTED",a->infmt,a->infmtlen);
  90                 else    b_char("FORMATTED",a->infmt,a->infmtlen);
  91         if(a->inform!=NULL)
  92                 if(p!=NULL && p->ufmt==0)
  93                 b_char("NO",a->inform,a->informlen);
  94                 else b_char("YES",a->inform,a->informlen);
  95         if(a->inunf)
  96                 if(p!=NULL && p->ufmt==0)
  97                         b_char("YES",a->inunf,a->inunflen);
  98                 else if (p!=NULL) b_char("NO",a->inunf,a->inunflen);
  99                 else b_char("UNKNOWN",a->inunf,a->inunflen);
 100         if(a->inrecl!=NULL && p!=NULL)
 101                 *a->inrecl=p->url;
 102         if(a->innrec!=NULL && p!=NULL && p->url>0)
 103                 *a->innrec=FTELL(p->ufd)/p->url+1;
 104         if(a->inblank && p!=NULL && p->ufmt)
 105                 if(p->ublnk)
 106                         b_char("ZERO",a->inblank,a->inblanklen);
 107                 else    b_char("NULL",a->inblank,a->inblanklen);
 108         return(0);
 109 }