projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 65fae53a BS |
1 | /* tc.c 4.1 83/02/12 */ |
| 2 | ||
| 3 | /* tc.c: find character not in table to delimit fields */ | |
| 4 | # include "t..c" | |
| 5 | choochar() | |
| 6 | { | |
| 7 | /* choose funny characters to delimit fields */ | |
| 8 | int had[128], ilin,icol, k; | |
| 9 | char *s; | |
| 10 | for(icol=0; icol<128; icol++) | |
| 11 | had[icol]=0; | |
| 12 | F1 = F2 = 0; | |
| 13 | for(ilin=0;ilin<nlin;ilin++) | |
| 14 | { | |
| 15 | if (instead[ilin]) continue; | |
| 16 | if (fullbot[ilin]) continue; | |
| 17 | for(icol=0; icol<ncol; icol++) | |
| 18 | { | |
| 19 | k = ctype(ilin, icol); | |
| 20 | if (k==0 || k == '-' || k == '=') | |
| 21 | continue; | |
| 22 | s = table[ilin][icol].col; | |
| 23 | if (point(s)) | |
| 24 | while (*s) | |
| 25 | had[*s++]=1; | |
| 26 | s=table[ilin][icol].rcol; | |
| 27 | if (point(s)) | |
| 28 | while (*s) | |
| 29 | had[*s++]=1; | |
| 30 | } | |
| 31 | } | |
| 32 | /* choose first funny character */ | |
| 33 | for( | |
| 34 | s="\002\003\005\006\007!%&#/?,:;<=>@`^~_{}+-*ABCDEFGHIJKMNOPQRSTUVWXYZabcdefgjkoqrstwxyz"; | |
| 35 | *s; s++) | |
| 36 | { | |
| 37 | if (had[*s]==0) | |
| 38 | { | |
| 39 | F1= *s; | |
| 40 | had[F1]=1; | |
| 41 | break; | |
| 42 | } | |
| 43 | } | |
| 44 | /* choose second funny character */ | |
| 45 | for( | |
| 46 | s="\002\003\005\006\007:_~^`@;,<=>#%&!/?{}+-*ABCDEFGHIJKMNOPQRSTUVWXZabcdefgjkoqrstuwxyz"; | |
| 47 | *s; s++) | |
| 48 | { | |
| 49 | if (had[*s]==0) | |
| 50 | { | |
| 51 | F2= *s; | |
| 52 | break; | |
| 53 | } | |
| 54 | } | |
| 55 | if (F1==0 || F2==0) | |
| 56 | error("couldn't find characters to use for delimiters"); | |
| 57 | return; | |
| 58 | } | |
| 59 | point(s) | |
| 60 | { | |
| 61 | return(s>= 128 || s<0); | |
| 62 | } |