projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| ae4ebdcf BS |
1 | /* tm.c 4.1 83/02/12 */ |
| 2 | ||
| 3 | /* tm.c: split numerical fields */ | |
| 4 | # include "t..c" | |
| 5 | maknew(str) | |
| 6 | char *str; | |
| 7 | { | |
| 8 | /* make two numerical fields */ | |
| 9 | int dpoint, c; | |
| 10 | char *p, *q, *ba; | |
| 11 | p = str; | |
| 12 | for (ba= 0; c = *str; str++) | |
| 13 | if (c == '\\' && *(str+1)== '&') | |
| 14 | ba=str; | |
| 15 | str=p; | |
| 16 | if (ba==0) | |
| 17 | { | |
| 18 | for (dpoint=0; *str; str++) | |
| 19 | { | |
| 20 | if (*str=='.' && !ineqn(str,p) && | |
| 21 | (str>p && digit(*(str-1)) || | |
| 22 | digit(*(str+1)))) | |
| 23 | dpoint=str; | |
| 24 | } | |
| 25 | if (dpoint==0) | |
| 26 | for(; str>p; str--) | |
| 27 | { | |
| 28 | if (digit( * (str-1) ) && !ineqn(str, p)) | |
| 29 | break; | |
| 30 | } | |
| 31 | if (!dpoint && p==str) /* not numerical, don't split */ | |
| 32 | return(0); | |
| 33 | if (dpoint) str=dpoint; | |
| 34 | } | |
| 35 | else | |
| 36 | str = ba; | |
| 37 | p =str; | |
| 38 | if (exstore ==0 || exstore >exlim) | |
| 39 | { | |
| 40 | exstore = chspace(); | |
| 41 | exlim= exstore+MAXCHS; | |
| 42 | } | |
| 43 | q = exstore; | |
| 44 | while (*exstore++ = *str++); | |
| 45 | *p = 0; | |
| 46 | return(q); | |
| 47 | } | |
| 48 | ineqn (s, p) | |
| 49 | char *s, *p; | |
| 50 | { | |
| 51 | /* true if s is in a eqn within p */ | |
| 52 | int ineq = 0, c; | |
| 53 | while (c = *p) | |
| 54 | { | |
| 55 | if (s == p) | |
| 56 | return(ineq); | |
| 57 | p++; | |
| 58 | if ((ineq == 0) && (c == delim1)) | |
| 59 | ineq = 1; | |
| 60 | else | |
| 61 | if ((ineq == 1) && (c == delim2)) | |
| 62 | ineq = 0; | |
| 63 | } | |
| 64 | return(0); | |
| 65 | } |