projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 55162a5a BJ |
1 | /* |
| 2 | * fortran format executer | |
| 3 | */ | |
| 4 | ||
| 5 | #include "fio.h" | |
| 6 | #include "fmt.h" | |
| 7 | ||
| 8 | #define DO(x) if(n=x) err(n>0?errflag:endflag,n,dfio) | |
| 9 | #define STKSZ 10 | |
| 10 | int cnt[STKSZ],ret[STKSZ],cp,rp; | |
| 11 | char *dfio = "dofio"; | |
| 12 | ||
| 13 | en_fio() | |
| 14 | { ftnint one=1; | |
| 15 | return(do_fio(&one,NULL,0l)); | |
| 16 | } | |
| 17 | ||
| 18 | do_fio(number,ptr,len) ftnint *number; ftnlen len; char *ptr; | |
| 19 | { struct syl *p; | |
| 20 | int n,i,more; | |
| 21 | more = *number; | |
| 22 | for(;;) | |
| 23 | switch(type_f((p= &syl[pc])->op)) | |
| 24 | { | |
| 25 | case NED: | |
| 26 | DO((*doned)(p,ptr)) | |
| 27 | pc++; | |
| 28 | break; | |
| 29 | case ED: | |
| 30 | if(ptr==NULL) | |
| 31 | { DO((*doend)('\n')) | |
| 32 | return(OK); | |
| 33 | } | |
| 34 | if(cnt[cp]<=0) | |
| 35 | { cp--; | |
| 36 | pc++; | |
| 37 | break; | |
| 38 | } | |
| 39 | if(!more) return(OK); | |
| 40 | DO((*doed)(p,ptr,len)) | |
| 41 | cnt[cp]--; | |
| 42 | ptr += len; | |
| 43 | more--; | |
| 44 | break; | |
| 45 | case STACK: /* repeat count */ | |
| 46 | if(++cp==STKSZ) err(errflag,100,"too many nested ()") | |
| 47 | cnt[cp]=p->p1; | |
| 48 | pc++; | |
| 49 | break; | |
| 50 | case RET: /* open paren */ | |
| 51 | if(++rp==STKSZ) err(errflag,100,"too many nested ()") | |
| 52 | ret[rp]=p->p1; | |
| 53 | pc++; | |
| 54 | break; | |
| 55 | case GOTO: /* close paren */ | |
| 56 | if(--cnt[cp]<=0) | |
| 57 | { cp--; | |
| 58 | rp--; | |
| 59 | pc++; | |
| 60 | } | |
| 61 | else pc = ret[rp--] + 1; | |
| 62 | break; | |
| 63 | case REVERT: /* end of format */ | |
| 64 | if(ptr==NULL) | |
| 65 | { DO((*doend)('\n')) | |
| 66 | return(OK); | |
| 67 | } | |
| 68 | if(!more) return(OK); | |
| 69 | rp=cp=0; | |
| 70 | pc = p->p1; | |
| 71 | DO((*dorevert)()) | |
| 72 | break; | |
| 73 | case COLON: | |
| 74 | #ifndef KOSHER | |
| 75 | case DOLAR: /*** NOT STANDARD FORTRAN ***/ | |
| 76 | #endif | |
| 77 | if (ptr == NULL) | |
| 78 | { DO((*doend)((char)p->p1)) | |
| 79 | return(OK); | |
| 80 | } | |
| 81 | if (!more) return(OK); | |
| 82 | pc++; | |
| 83 | break; | |
| 84 | #ifndef KOSHER | |
| 85 | case SU: /*** NOT STANDARD FORTRAN ***/ | |
| 86 | #endif | |
| 87 | case SS: | |
| 88 | case SP: | |
| 89 | case S: cplus = p->p1; | |
| 90 | signit = p->p2; | |
| 91 | pc++; | |
| 92 | break; | |
| 93 | case P: | |
| 94 | scale = p->p1; | |
| 95 | pc++; | |
| 96 | break; | |
| 97 | #ifndef KOSHER | |
| 98 | case R: /*** NOT STANDARD FORTRAN ***/ | |
| 99 | radix = p->p1; | |
| 100 | pc++; | |
| 101 | break; | |
| 102 | #endif | |
| 103 | case BN: | |
| 104 | case BZ: | |
| 105 | cblank = p->p1; | |
| 106 | pc++; | |
| 107 | break; | |
| 108 | default: | |
| 109 | err(errflag,100,"impossible code") | |
| 110 | } | |
| 111 | } | |
| 112 | ||
| 113 | fmt_bg() | |
| 114 | { | |
| 115 | cp=rp=pc=cursor=0; | |
| 116 | cnt[0]=ret[0]=0; | |
| 117 | } | |
| 118 | ||
| 119 | type_f(n) | |
| 120 | { | |
| 121 | #ifdef debug | |
| 122 | fprintf(stderr," pc=%d, cnt[%d]=%d, ret[%d]=%d, op=%d\n", | |
| 123 | pc,cp,cnt[cp],rp,ret[rp],n); /*for debug*/ | |
| 124 | #endif | |
| 125 | switch(n) | |
| 126 | { | |
| 127 | case X: /* non-editing specifications */ | |
| 128 | case SLASH: | |
| 129 | case APOS: case H: | |
| 130 | case T: case TL: case TR: | |
| 131 | return(NED); | |
| 132 | ||
| 133 | case F: /* editing conversions */ | |
| 134 | case I: case IM: | |
| 135 | case A: case AW: | |
| 136 | case L: | |
| 137 | case E: case EE: case D: case DE: | |
| 138 | case G: case GE: | |
| 139 | return(ED); | |
| 140 | ||
| 141 | default: return(n); | |
| 142 | } | |
| 143 | } |