libf2c/libI77/rsfe.c

   1 /* read sequential formatted external */
   2 #include "f2c.h"
   3 #include "fio.h"
   4 #include "fmt.h"
   5
   6 xrd_SL(Void)
   7 {       int ch;
   8         if(!f__curunit->uend)
   9                 while((ch=getc(f__cf))!='\n')
  10                         if (ch == EOF) {
  11                                 f__curunit->uend = 1;
  12                                 break;
  13                                 }
  14         f__cursor=f__recpos=0;
  15         return(1);
  16 }
  17 x_getc(Void)
  18 {       int ch;
  19         if(f__curunit->uend) return(EOF);
  20         ch = getc(f__cf);
  21         if(ch!=EOF && ch!='\n')
  22         {       f__recpos++;
  23                 return(ch);
  24         }
  25         if(ch=='\n')
  26         {       (void) ungetc(ch,f__cf);
  27                 return(ch);
  28         }
  29         if(f__curunit->uend || feof(f__cf))
  30         {       errno=0;
  31                 f__curunit->uend=1;
  32                 return(-1);
  33         }
  34         return(-1);
  35 }
  36 x_endp(Void)
  37 {
  38         xrd_SL();
  39         return f__curunit->uend == 1 ? EOF : 0;
  40 }
  41 x_rev(Void)
  42 {
  43         (void) xrd_SL();
  44         return(0);
  45 }
  46 #ifdef KR_headers
  47 integer s_rsfe(a) cilist *a; /* start */
  48 #else
  49 integer s_rsfe(cilist *a) /* start */
  50 #endif
  51 {       int n;
  52         if(f__init != 1) f_init();
  53         f__init = 3;
  54         f__reading=1;
  55         f__sequential=1;
  56         f__formatted=1;
  57         f__external=1;
  58         if(n=c_sfe(a)) return(n);
  59         f__elist=a;
  60         f__cursor=f__recpos=0;
  61         f__scale=0;
  62         f__fmtbuf=a->cifmt;
  63         f__curunit= &f__units[a->ciunit];
  64         f__cf=f__curunit->ufd;
  65         if(pars_f(f__fmtbuf)<0) err(a->cierr,100,"startio");
  66         f__getn= x_getc;
  67         f__doed= rd_ed;
  68         f__doned= rd_ned;
  69         fmt_bg();
  70         f__doend=x_endp;
  71         f__donewrec=xrd_SL;
  72         f__dorevert=x_rev;
  73         f__cblank=f__curunit->ublnk;
  74         f__cplus=0;
  75         if(f__curunit->uwrt && f__nowreading(f__curunit))
  76                 err(a->cierr,errno,"read start");
  77         if(f__curunit->uend)
  78                 err(f__elist->ciend,(EOF),"read start");
  79         return(0);
  80 }