projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 476fcd16 SL |
1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)tt.c 4.2 %G%"; | |
| 3 | #endif | |
| caa88614 BS |
4 | |
| 5 | /* tt.c: subroutines for drawing horizontal lines */ | |
| 6 | # include "t..c" | |
| 7 | ctype(il, ic) | |
| 8 | { | |
| 9 | if (instead[il]) | |
| 10 | return(0); | |
| 11 | if (fullbot[il]) | |
| 12 | return(0); | |
| 13 | il = stynum[il]; | |
| 14 | return(style[il][ic]); | |
| 15 | } | |
| 16 | min(a,b) | |
| 17 | { | |
| 18 | return(a<b ? a : b); | |
| 19 | } | |
| 20 | fspan(i,c) | |
| 21 | { | |
| 22 | c++; | |
| 23 | return(c<ncol && ctype(i,c)=='s'); | |
| 24 | } | |
| 25 | lspan(i,c) | |
| 26 | { | |
| 27 | int k; | |
| 28 | if (ctype(i,c) != 's') return(0); | |
| 29 | c++; | |
| 30 | if (c < ncol && ctype(i,c)== 's') | |
| 31 | return(0); | |
| 32 | for(k=0; ctype(i,--c) == 's'; k++); | |
| 33 | return(k); | |
| 34 | } | |
| 35 | ctspan(i,c) | |
| 36 | { | |
| 37 | int k; | |
| 38 | c++; | |
| 39 | for(k=1; c<ncol && ctype(i,c)=='s'; k++) | |
| 40 | c++; | |
| 41 | return(k); | |
| 42 | } | |
| 43 | tohcol(ic) | |
| 44 | { | |
| 45 | if (ic==0) | |
| 46 | fprintf(tabout, "\\h'|0'"); | |
| 47 | else | |
| 48 | fprintf(tabout, "\\h'(|\\n(%du+|\\n(%du)/2u'", ic+CLEFT, ic+CRIGHT-1); | |
| 49 | } | |
| 50 | allh(i) | |
| 51 | { | |
| 52 | /* return true if every element in line i is horizontal */ | |
| 53 | /* also at least one must be horizontl */ | |
| 54 | int c, one, k; | |
| 55 | if (fullbot[i]) return(1); | |
| 56 | for(one=c=0; c<ncol; c++) | |
| 57 | { | |
| 58 | k = thish(i,c); | |
| 59 | if (k==0) return(0); | |
| 60 | if (k==1) continue; | |
| 61 | one=1; | |
| 62 | } | |
| 63 | return(one); | |
| 64 | } | |
| 65 | thish(i,c) | |
| 66 | { | |
| 67 | int t; | |
| 68 | char *s; | |
| 69 | struct colstr *pc; | |
| 70 | if (c<0)return(0); | |
| 71 | if (i<0) return(0); | |
| 72 | t = ctype(i,c); | |
| 73 | if (t=='_' || t == '-') | |
| 74 | return('-'); | |
| 75 | if (t=='=')return('='); | |
| 76 | if (t=='^') return(1); | |
| 77 | if (fullbot[i] ) | |
| 78 | return(fullbot[i]); | |
| 79 | if (t=='s') return(thish(i,c-1)); | |
| 80 | if (t==0) return(1); | |
| 81 | pc = &table[i][c]; | |
| 82 | s = (t=='a' ? pc->rcol : pc->col); | |
| 83 | if (s==0 || (point(s) && *s==0)) | |
| 84 | return(1); | |
| 85 | if (vspen(s)) return(1); | |
| 86 | if (t=barent( s)) | |
| 87 | return(t); | |
| 88 | return(0); | |
| 89 | } |