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Annotation of 43BSDTahoe/usr.lib/libI77/rdfe.c, revision 1.1

1.1     ! root        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: }

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