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Annotation of 43BSDReno/lib/libI77/rsfe.c, revision 1.1.1.1

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:  *     @(#)rsfe.c      5.2     7/30/85
                      7:  */
                      8: 
                      9: /*
                     10:  * read sequential formatted external
                     11:  */
                     12: 
                     13: #include "fio.h"
                     14: 
                     15: extern int rd_ed(),rd_ned();
                     16: int x_rnew(),x_getc(),x_tab();
                     17: 
                     18: LOCAL char rsfe[] = "read sfe";
                     19: 
                     20: s_rsfe(a) cilist *a; /* start */
                     21: {      int n;
                     22:        reading = YES;
                     23:        sequential = YES;
                     24:        if(n=c_sfe(a,READ,SEQ,rsfe)) return (n);
                     25:        if(curunit->url) err(errflag,F_ERNOSIO,rsfe)
                     26:        if(curunit->uwrt && ! nowreading(curunit)) err(errflag, errno, rsfe)
                     27:        getn= x_getc;
                     28:        doed= rd_ed;
                     29:        doned= rd_ned;
                     30:        donewrec = dorevert = doend = x_rnew;
                     31:        dotab = x_tab;
                     32:        if(pars_f()) err(errflag,F_ERFMT,rsfe)
                     33:        fmt_bg();
                     34:        return(OK);
                     35: }
                     36: 
                     37: LOCAL
                     38: x_rnew()                       /* find next record */
                     39: {      int ch;
                     40:        if(curunit->uend)
                     41:                return(EOF);
                     42:        while((ch=getc(cf))!='\n' && ch!=EOF);
                     43:        if(feof(cf))
                     44:        {       curunit->uend = YES;
                     45:                if (recpos==0) return(EOF);
                     46:        }
                     47:        cursor=recpos=reclen=0;
                     48:        return(OK);
                     49: }
                     50: 
                     51: LOCAL
                     52: x_getc()
                     53: {      int ch;
                     54:        if(curunit->uend) return(EOF);
                     55:        if((ch=getc(cf))!=EOF && ch!='\n')
                     56:        {       recpos++;
                     57:                return(ch);
                     58:        }
                     59:        if(ch=='\n')
                     60:        {       ungetc(ch,cf);
                     61:                return(ch);
                     62:        }
                     63:        if(feof(cf)) curunit->uend = YES;
                     64:        return(EOF);
                     65: }
                     66: 
                     67: e_rsfe()
                     68: {      int n;
                     69:        n=en_fio();
                     70:        fmtbuf=NULL;
                     71:        return(n);
                     72: }

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