diff options
Diffstat (limited to 'gcc/f/runtime/libI77/dfe.c')
| -rw-r--r-- | gcc/f/runtime/libI77/dfe.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/gcc/f/runtime/libI77/dfe.c b/gcc/f/runtime/libI77/dfe.c new file mode 100644 index 00000000000..e229e0e3356 --- /dev/null +++ b/gcc/f/runtime/libI77/dfe.c @@ -0,0 +1,156 @@ +#include "f2c.h" +#include "fio.h" +#include "fmt.h" + +y_rsk(Void) +{ + if(f__curunit->uend || f__curunit->url <= f__recpos + || f__curunit->url == 1) return 0; + do { + getc(f__cf); + } while(++f__recpos < f__curunit->url); + return 0; +} +y_getc(Void) +{ + int ch; + if(f__curunit->uend) return(-1); + if((ch=getc(f__cf))!=EOF) + { + f__recpos++; + if(f__curunit->url>=f__recpos || + f__curunit->url==1) + return(ch); + else return(' '); + } + if(feof(f__cf)) + { + f__curunit->uend=1; + errno=0; + return(-1); + } + err(f__elist->cierr,errno,"readingd"); +} +#ifdef KR_headers +y_putc(c) +#else +y_putc(int c) +#endif +{ + f__recpos++; + if(f__recpos <= f__curunit->url || f__curunit->url==1) + putc(c,f__cf); + else + err(f__elist->cierr,110,"dout"); + return(0); +} +y_rev(Void) +{ /*what about work done?*/ + if(f__curunit->url==1 || f__recpos==f__curunit->url) + return(0); + while(f__recpos<f__curunit->url) + (*f__putn)(' '); + f__recpos=0; + return(0); +} +y_err(Void) +{ + err(f__elist->cierr, 110, "dfe"); +} + +y_newrec(Void) +{ + if(f__curunit->url == 1 || f__recpos == f__curunit->url) { + f__hiwater = f__recpos = f__cursor = 0; + return(1); + } + if(f__hiwater > f__recpos) + f__recpos = f__hiwater; + y_rev(); + f__hiwater = f__cursor = 0; + return(1); +} + +#ifdef KR_headers +c_dfe(a) cilist *a; +#else +c_dfe(cilist *a) +#endif +{ + f__sequential=0; + f__formatted=f__external=1; + f__elist=a; + f__cursor=f__scale=f__recpos=0; + if(a->ciunit>MXUNIT || a->ciunit<0) + err(a->cierr,101,"startchk"); + f__curunit = &f__units[a->ciunit]; + if(f__curunit->ufd==NULL && fk_open(DIR,FMT,a->ciunit)) + err(a->cierr,104,"dfe"); + f__cf=f__curunit->ufd; + if(!f__curunit->ufmt) err(a->cierr,102,"dfe"); + if(!f__curunit->useek) err(a->cierr,104,"dfe"); + f__fmtbuf=a->cifmt; + if(a->cirec <= 0) + err(a->cierr,130,"dfe"); + (void) fseek(f__cf,(long)f__curunit->url * (a->cirec-1),SEEK_SET); + f__curunit->uend = 0; + return(0); +} +#ifdef KR_headers +integer s_rdfe(a) cilist *a; +#else +integer s_rdfe(cilist *a) +#endif +{ + int n; + if(f__init != 1) f_init(); + f__init = 3; + f__reading=1; + if(n=c_dfe(a))return(n); + if(f__curunit->uwrt && f__nowreading(f__curunit)) + err(a->cierr,errno,"read start"); + f__getn = y_getc; + f__doed = rd_ed; + f__doned = rd_ned; + f__dorevert = f__donewrec = y_err; + f__doend = y_rsk; + if(pars_f(f__fmtbuf)<0) + err(a->cierr,100,"read start"); + fmt_bg(); + return(0); +} +#ifdef KR_headers +integer s_wdfe(a) cilist *a; +#else +integer s_wdfe(cilist *a) +#endif +{ + int n; + if(f__init != 1) f_init(); + f__init = 3; + f__reading=0; + if(n=c_dfe(a)) return(n); + if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit)) + err(a->cierr,errno,"startwrt"); + f__putn = y_putc; + f__doed = w_ed; + f__doned= w_ned; + f__dorevert = y_err; + f__donewrec = y_newrec; + f__doend = y_rev; + if(pars_f(f__fmtbuf)<0) + err(a->cierr,100,"startwrt"); + fmt_bg(); + return(0); +} +integer e_rdfe(Void) +{ + f__init = 1; + (void) en_fio(); + return(0); +} +integer e_wdfe(Void) +{ + f__init = 1; + return en_fio(); +} |