ref: b7105fe0662b57689f629ac768dd084f8a1589a4
dir: /sys/src/cmd/tbl/tu.c/
/* tu.c: draws horizontal lines */ # include "t.h" void makeline(int i, int c, int lintype) { int cr, type, shortl; type = thish(i, c); if (type == 0) return; shortl = (table[i][c].col[0] == '\\'); if (c > 0 && !shortl && thish(i, c - 1) == type) return; if (shortl == 0) for (cr = c; cr < ncol && (ctype(i, cr) == 's' || type == thish(i, cr)); cr++) ; else for (cr = c + 1; cr < ncol && ctype(i, cr) == 's'; cr++) ; drawline(i, c, cr - 1, lintype, 0, shortl); } void fullwide(int i, int lintype) { int cr, cl; if (!pr1403) Bprint(&tabout, ".nr %d \\n(.v\n.vs \\n(.vu-\\n(.sp\n", SVS); cr = 0; while (cr < ncol) { cl = cr; while (i > 0 && vspand(prev(i), cl, 1)) cl++; for (cr = cl; cr < ncol; cr++) if (i > 0 && vspand(prev(i), cr, 1)) break; if (cl < ncol) drawline(i, cl, (cr < ncol ? cr - 1 : cr), lintype, 1, 0); } Bprint(&tabout, "\n"); if (!pr1403) Bprint(&tabout, ".vs \\n(%du\n", SVS); } void drawline(int i, int cl, int cr, int lintype, int noheight, int shortl) { char *exhr, *exhl, *lnch; int lcount, ln, linpos, oldpos, nodata; lcount = 0; exhr = exhl = ""; switch (lintype) { case '-': lcount = 1; break; case '=': lcount = pr1403 ? 1 : 2; break; case SHORTLINE: lcount = 1; break; } if (lcount <= 0) return; nodata = cr - cl >= ncol || noheight || allh(i); if (!nodata) Bprint(&tabout, "\\v'-.5m'"); for (ln = oldpos = 0; ln < lcount; ln++) { linpos = 2 * ln - lcount + 1; if (linpos != oldpos) Bprint(&tabout, "\\v'%dp'", linpos - oldpos); oldpos = linpos; if (shortl == 0) { tohcol(cl); if (lcount > 1) { switch (interv(i, cl)) { case TOP: exhl = ln == 0 ? "1p" : "-1p"; break; case BOT: exhl = ln == 1 ? "1p" : "-1p"; break; case THRU: exhl = "1p"; break; } if (exhl[0]) Bprint(&tabout, "\\h'%s'", exhl); } else if (lcount == 1) { switch (interv(i, cl)) { case TOP: case BOT: exhl = "-1p"; break; case THRU: exhl = "1p"; break; } if (exhl[0]) Bprint(&tabout, "\\h'%s'", exhl); } if (lcount > 1) { switch (interv(i, cr + 1)) { case TOP: exhr = ln == 0 ? "-1p" : "+1p"; break; case BOT: exhr = ln == 1 ? "-1p" : "+1p"; break; case THRU: exhr = "-1p"; break; } } else if (lcount == 1) { switch (interv(i, cr + 1)) { case TOP: case BOT: exhr = "+1p"; break; case THRU: exhr = "-1p"; break; } } } else Bprint(&tabout, "\\h'|\\n(%2su'", reg(cl, CLEFT)); Bprint(&tabout, "\\s\\n(%d", LSIZE); if (linsize) Bprint(&tabout, "\\v'-\\n(%dp/6u'", LSIZE); if (shortl) Bprint(&tabout, "\\l'|\\n(%2su'", reg(cr, CRIGHT)); else { lnch = "\\(ul"; if (pr1403) lnch = lintype == 2 ? "=" : "\\(ru"; if (cr + 1 >= ncol) Bprint(&tabout, "\\l'|\\n(TWu%s%s'", exhr, lnch); else Bprint(&tabout, "\\l'(|\\n(%2su+|\\n(%2su)/2u%s%s'", reg(cr, CRIGHT), reg(cr + 1, CLEFT), exhr, lnch); } if (linsize) Bprint(&tabout, "\\v'\\n(%dp/6u'", LSIZE); Bprint(&tabout, "\\s0"); } if (oldpos != 0) Bprint(&tabout, "\\v'%dp'", -oldpos); if (!nodata) Bprint(&tabout, "\\v'+.5m'"); } void getstop(void) { int i, c, k, junk, stopp; stopp = 1; for (i = 0; i < MAXLIN; i++) linestop[i] = 0; for (i = 0; i < nlin; i++) for (c = 0; c < ncol; c++) { k = left(i, c, &junk); if (k >= 0 && linestop[k] == 0) linestop[k] = ++stopp; } if (boxflg || allflg || dboxflg) linestop[0] = 1; } int left(int i, int c, int *lwidp) { int kind, li, lj; /* returns -1 if no line to left */ /* returns number of line where it starts */ /* stores into lwid the kind of line */ *lwidp = 0; if (i < 0) return(-1); kind = lefdata(i, c); if (kind == 0) return(-1); if (i + 1 < nlin) if (lefdata(next(i), c) == kind) return(-1); li = i; while (i >= 0 && lefdata(i, c) == kind) i = prev(li = i); if (prev(li) == -1) li = 0; *lwidp = kind; for (lj = i + 1; lj < li; lj++) if (instead[lj] && strcmp(instead[lj], ".TH") == 0) return(li); for (i = i + 1; i < li; i++) if (fullbot[i]) li = i; return(li); } int lefdata(int i, int c) { int ck; if (i >= nlin) i = nlin - 1; if (ctype(i, c) == 's') { for (ck = c; ctype(i, ck) == 's'; ck--) ; if (thish(i, ck) == 0) return(0); } i = stynum[i]; i = lefline[c][i]; if (i > 0) return(i); if (dboxflg && c == 0) return(2); if (allflg) return(1); if (boxflg && c == 0) return(1); return(0); } int next(int i) { while (i + 1 < nlin) { i++; if (!fullbot[i] && !instead[i]) break; } return(i); } int prev(int i) { while (--i >= 0 && (fullbot[i] || instead[i])) ; return(i); }