projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| bae7117f WH |
1 | #include "f2c.h" |
| 2 | #include "fio.h" | |
| 3 | extern uiolen f__reclen; | |
| 4 | long f__recloc; | |
| 5 | ||
| 6 | #ifdef KR_headers | |
| 7 | c_sue(a) cilist *a; | |
| 8 | #else | |
| 9 | c_sue(cilist *a) | |
| 10 | #endif | |
| 11 | { | |
| 12 | if(a->ciunit >= MXUNIT || a->ciunit < 0) | |
| 13 | err(a->cierr,101,"startio"); | |
| 14 | f__external=f__sequential=1; | |
| 15 | f__formatted=0; | |
| 16 | f__curunit = &f__units[a->ciunit]; | |
| 17 | f__elist=a; | |
| 18 | if(f__curunit->ufd==NULL && fk_open(SEQ,UNF,a->ciunit)) | |
| 19 | err(a->cierr,114,"sue"); | |
| 20 | f__cf=f__curunit->ufd; | |
| 21 | if(f__curunit->ufmt) err(a->cierr,103,"sue") | |
| 22 | if(!f__curunit->useek) err(a->cierr,103,"sue") | |
| 23 | return(0); | |
| 24 | } | |
| 25 | #ifdef KR_headers | |
| 26 | integer s_rsue(a) cilist *a; | |
| 27 | #else | |
| 28 | integer s_rsue(cilist *a) | |
| 29 | #endif | |
| 30 | { | |
| 31 | int n; | |
| 32 | if(!f__init) f_init(); | |
| 33 | f__reading=1; | |
| 34 | if(n=c_sue(a)) return(n); | |
| 35 | f__recpos=0; | |
| 36 | if(f__curunit->uwrt && f__nowreading(f__curunit)) | |
| 37 | err(a->cierr, errno, "read start"); | |
| 38 | if(fread((char *)&f__reclen,sizeof(uiolen),1,f__cf) | |
| 39 | != 1) | |
| 40 | { if(feof(f__cf)) | |
| 41 | { f__curunit->uend = 1; | |
| 42 | err(a->ciend, EOF, "start"); | |
| 43 | } | |
| 44 | clearerr(f__cf); | |
| 45 | err(a->cierr, errno, "start"); | |
| 46 | } | |
| 47 | return(0); | |
| 48 | } | |
| 49 | #ifdef KR_headers | |
| 50 | integer s_wsue(a) cilist *a; | |
| 51 | #else | |
| 52 | integer s_wsue(cilist *a) | |
| 53 | #endif | |
| 54 | { | |
| 55 | int n; | |
| 56 | if(!f__init) f_init(); | |
| 57 | if(n=c_sue(a)) return(n); | |
| 58 | f__reading=0; | |
| 59 | f__reclen=0; | |
| 60 | if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit)) | |
| 61 | err(a->cierr, errno, "write start"); | |
| 62 | f__recloc=ftell(f__cf); | |
| 63 | (void) fseek(f__cf,(long)sizeof(uiolen),SEEK_CUR); | |
| 64 | return(0); | |
| 65 | } | |
| 66 | integer e_wsue(Void) | |
| 67 | { long loc; | |
| 68 | (void) fwrite((char *)&f__reclen,sizeof(uiolen),1,f__cf); | |
| 69 | loc=ftell(f__cf); | |
| 70 | (void) fseek(f__cf,f__recloc,SEEK_SET); | |
| 71 | (void) fwrite((char *)&f__reclen,sizeof(uiolen),1,f__cf); | |
| 72 | (void) fseek(f__cf,loc,SEEK_SET); | |
| 73 | return(0); | |
| 74 | } | |
| 75 | integer e_rsue(Void) | |
| 76 | { | |
| 77 | (void) fseek(f__cf,(long)(f__reclen-f__recpos+sizeof(uiolen)),SEEK_CUR); | |
| 78 | return(0); | |
| 79 | } |