4.3BSD - /usr/src/usr.lib/libI77/rdfe.c

   1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)rdfe.c	5.1	6/7/85
   7:  */
   8: 
   9: /*
  10:  * read direct formatted external i/o
  11:  */
  12: 
  13: #include "fio.h"
  14: 
  15: extern int rd_ed(),rd_ned();
  16: int y_getc(),y_rnew(),y_tab();
  17: 
  18: LOCAL char rdfe[] = "read dfe";
  19: 
  20: s_rdfe(a) cilist *a;
  21: {
  22:     int n;
  23:     reading = YES;
  24:     if(n=c_dfe(a,READ,rdfe)) return(n);
  25:     if(curunit->uwrt && ! nowreading(curunit)) err(errflag, errno, rdfe)
  26:     getn = y_getc;
  27:     doed = rd_ed;
  28:     doned = rd_ned;
  29:     dotab = y_tab;
  30:     dorevert = doend = donewrec = y_rnew;
  31:     if(pars_f()) err(errflag,F_ERFMT,rdfe)
  32:     fmt_bg();
  33:     return(OK);
  34: }
  35: 
  36: e_rdfe()
  37: {
  38:     en_fio();
  39:     return(OK);
  40: }
  41: 
  42: LOCAL
  43: y_getc()
  44: {
  45:     int ch;
  46:     if(curunit->uend) return(EOF);
  47:     if(curunit->url==1 || recpos++ < curunit->url)
  48:     {
  49:         if((ch=getc(cf))!=EOF)
  50:         {
  51:                 return(ch);
  52:         }
  53:         if(feof(cf))
  54:         {
  55:             curunit->uend = YES;
  56:             return(EOF);
  57:         }
  58:         err(errflag,errno,rdfe);
  59:     }
  60:     else return(' ');
  61: }
  62: 
  63: /*
  64: /*y_rev()
  65: /*{	/*what about work done?*/
  66: /*	if(curunit->url==1) return(0);
  67: /*	while(recpos<curunit->url) (*putn)(' ');
  68: /*	recpos=0;
  69: /*	return(0);
  70: /*}
  71: /*
  72: /*y_err()
  73: /*{
  74: /*	err(errflag, F_EREREC, rdfe+5);
  75: /*}
  76: */
  77: 
  78: LOCAL
  79: y_rnew()
  80: {   if(curunit->url != 1)
  81:     {   fseek(cf,(long)curunit->url*(++recnum),0);
  82:         recpos = reclen = cursor = 0;
  83:     }
  84:     return(OK);
  85: }

Defined functions

Defined variables