libf2c/libI77/inquire.c

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