137 lines
2.4 KiB
C
137 lines
2.4 KiB
C
#include "f2c.h"
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#include "fio.h"
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#include "fmt.h"
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extern int rd_ed(),rd_ned(),y_getc(),y_putc(),y_err();
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extern int y_rev(), y_rsk(), y_newrec();
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extern int w_ed(),w_ned();
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integer s_rdfe(a) cilist *a;
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{
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int n;
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if(!init) f_init();
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if(n=c_dfe(a))return(n);
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reading=1;
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if(curunit->uwrt && nowreading(curunit))
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err(a->cierr,errno,"read start");
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getn = y_getc;
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doed = rd_ed;
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doned = rd_ned;
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dorevert = donewrec = y_err;
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doend = y_rsk;
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if(pars_f(fmtbuf)<0)
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err(a->cierr,100,"read start");
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fmt_bg();
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return(0);
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}
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integer s_wdfe(a) cilist *a;
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{
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int n;
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if(!init) f_init();
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if(n=c_dfe(a)) return(n);
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reading=0;
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if(curunit->uwrt != 1 && nowwriting(curunit))
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err(a->cierr,errno,"startwrt");
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putn = y_putc;
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doed = w_ed;
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doned= w_ned;
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dorevert = y_err;
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donewrec = y_newrec;
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doend = y_rev;
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if(pars_f(fmtbuf)<0)
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err(a->cierr,100,"startwrt");
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fmt_bg();
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return(0);
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}
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integer e_rdfe()
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{
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(void) en_fio();
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return(0);
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}
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integer e_wdfe()
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{
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(void) en_fio();
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return(0);
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}
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c_dfe(a) cilist *a;
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{
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sequential=0;
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formatted=external=1;
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elist=a;
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cursor=scale=recpos=0;
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if(a->ciunit>MXUNIT || a->ciunit<0)
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err(a->cierr,101,"startchk");
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curunit = &units[a->ciunit];
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if(curunit->ufd==NULL && fk_open(DIR,FMT,a->ciunit))
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err(a->cierr,104,"dfe");
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cf=curunit->ufd;
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if(!curunit->ufmt) err(a->cierr,102,"dfe")
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if(!curunit->useek) err(a->cierr,104,"dfe")
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fmtbuf=a->cifmt;
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(void) fseek(cf,(long)curunit->url * (a->cirec-1),SEEK_SET);
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curunit->uend = 0;
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return(0);
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}
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y_rsk()
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{
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if(curunit->uend || curunit->url <= recpos
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|| curunit->url == 1) return 0;
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do {
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getc(cf);
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} while(++recpos < curunit->url);
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return 0;
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}
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y_getc()
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{
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int ch;
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if(curunit->uend) return(-1);
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if((ch=getc(cf))!=EOF)
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{
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recpos++;
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if(curunit->url>=recpos ||
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curunit->url==1)
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return(ch);
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else return(' ');
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}
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if(feof(cf))
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{
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curunit->uend=1;
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errno=0;
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return(-1);
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}
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err(elist->cierr,errno,"readingd");
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}
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y_putc(c)
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{
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recpos++;
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if(recpos <= curunit->url || curunit->url==1)
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putc(c,cf);
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else
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err(elist->cierr,110,"dout");
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return(0);
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}
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y_rev()
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{ /*what about work done?*/
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if(curunit->url==1 || recpos==curunit->url)
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return(0);
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while(recpos<curunit->url)
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(*putn)(' ');
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recpos=0;
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return(0);
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}
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y_err()
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{
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err(elist->cierr, 110, "dfe");
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}
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y_newrec()
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{
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if(curunit->url == 1 || recpos == curunit->url) {
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hiwater = recpos = cursor = 0;
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return(1);
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}
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if(hiwater > recpos)
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recpos = hiwater;
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y_rev();
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hiwater = cursor = 0;
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return(1);
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}
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