sed: Can't open /usr/web/plan9/sources.html #include "tdef.h" #include "ext.h" #include "fns.h" /* * troff9.c * * misc functions */ Tchar setz(void) { Tchar i; if (!ismot(i = getch())) i |= ZBIT; return(i); } void setline(void) { Tchar *i; Tchar c; int length; int j, w, cnt, delim, rem, temp; Tchar linebuf[NC]; if (ismot(c = getch())) return; delim = cbits(c); vflag = 0; dfact = EM; length = quant(atoi0(), HOR); dfact = 1; if (!length) { eat(delim); return; } s0: if ((j = cbits(c = getch())) == delim || j == '\n') { ch = c; c = RULE | chbits; } else if (cbits(c) == FILLER) goto s0; w = width(c); if (w <= 0) { ERROR "zero-width underline character ignored" WARN; c = RULE | chbits; w = width(c); } i = linebuf; if (length < 0) { *i++ = makem(length); length = -length; } if (!(cnt = length / w)) { *i++ = makem(-(temp = ((w - length) / 2))); *i++ = c; *i++ = makem(-(w - length - temp)); goto s1; } if (rem = length % w) { if (cbits(c) == RULE || cbits(c) == UNDERLINE || cbits(c) == ROOTEN) *i++ = c | ZBIT; *i++ = makem(rem); } if (cnt) { *i++ = RPT; *i++ = cnt; *i++ = c; } s1: *i = 0; eat(delim); pushback(linebuf); } eat(int c) { int i; while ((i = cbits(getch())) != c && i != '\n') ; return(i); } void setov(void) { int j, k; Tchar i, o[NOV+1]; int delim, w[NOV+1]; if (ismot(i = getch())) return; delim = cbits(i); for (k = 0; k < NOV && (j = cbits(i = getch())) != delim && j != '\n'; k++) { o[k] = i; w[k] = width(i); } o[k] = w[k] = 0; if (o[0]) for (j = 1; j; ) { j = 0; for (k = 1; o[k] ; k++) { if (w[k-1] < w[k]) { j++; i = w[k]; w[k] = w[k-1]; w[k-1] = i; i = o[k]; o[k] = o[k-1]; o[k-1] = i; } } } else return; *pbp++ = makem(w[0] / 2); for (k = 0; o[k]; k++) ; while (k>0) { k--; *pbp++ = makem(-((w[k] + w[k+1]) / 2)); *pbp++ = o[k]; } } void setbra(void) { int k; Tchar i, *j, dwn; int cnt, delim; Tchar brabuf[NC]; if (ismot(i = getch())) return; delim = cbits(i); j = brabuf + 1; cnt = 0; if (NROFF) dwn = (2 * t.Halfline) | MOT | VMOT; else dwn = EM | MOT | VMOT; while ((k = cbits(i = getch())) != delim && k != '\n' && j <= brabuf + NC - 4) { *j++ = i | ZBIT; *j++ = dwn; cnt++; } if (--cnt < 0) return; else if (!cnt) { ch = *(j - 2); return; } *j = 0; if (NROFF) *--j = *brabuf = (cnt * t.Halfline) | MOT | NMOT | VMOT; else *--j = *brabuf = (cnt * EM) / 2 | MOT | NMOT | VMOT; *--j &= ~ZBIT; pushback(brabuf); } void setvline(void) { int i; Tchar c, rem, ver, neg; int cnt, delim, v; Tchar vlbuf[NC]; Tchar *vlp; if (ismot(c = getch())) return; delim = cbits(c); dfact = lss; vflag++; i = quant(atoi0(), VERT); dfact = 1; if (!i) { eat(delim); vflag = 0; return; } if ((cbits(c = getch())) == delim) { c = BOXRULE | chbits; /*default box rule*/ } else getch(); c |= ZBIT; neg = 0; if (i < 0) { i = -i; neg = NMOT; } if (NROFF) v = 2 * t.Halfline; else { v = EM; if (v < VERT) /* ATT EVK hack: Erik van Konijnenburg, */ v = VERT; /* hvlpb!evkonij, ATT NSI Hilversum, Holland */ } cnt = i / v; rem = makem(i % v) | neg; ver = makem(v) | neg; vlp = vlbuf; if (!neg) *vlp++ = ver; if (absmot(rem) != 0) { *vlp++ = c; *vlp++ = rem; } while (vlp < vlbuf + NC - 3 && cnt--) { *vlp++ = c; *vlp++ = ver; } *(vlp - 2) &= ~ZBIT; if (!neg) vlp--; *vlp = 0; pushback(vlbuf); vflag = 0; } #define NPAIR (NC/2-6) /* max pairs in spline, etc. */ void setdraw(void) /* generate internal cookies for a drawing function */ { int i, j, k, dx[NPAIR], dy[NPAIR], delim, type; Tchar c, drawbuf[NC]; int drawch = '.'; /* character to draw with */ /* input is \D'f dx dy dx dy ... c' (or at least it had better be) */ /* this does drawing function f with character c and the */ /* specified dx,dy pairs interpreted as appropriate */ /* pairs are deltas from last point, except for radii */ /* l dx dy: line from here by dx,dy */ /* c x: circle of diameter x, left side here */ /* e x y: ellipse of diameters x,y, left side here */ /* a dx1 dy1 dx2 dy2: ccw arc: ctr at dx1,dy1, then end at dx2,dy2 from there */ /* ~ dx1 dy1 dx2 dy2...: spline to dx1,dy1 to dx2,dy2 ... */ /* b x c: built-up character of type c, ht x */ /* f dx dy ...: f is any other char: like spline */ if (ismot(c = getch())) return; delim = cbits(c); numerr.escarg = type = cbits(getch()); if (type == '~') /* head off the .tr ~ problem */ type = 's'; for (i = 0; i < NPAIR ; i++) { skip(); vflag = 0; dfact = EM; dx[i] = quant(atoi0(), HOR); if (dx[i] > MAXMOT) dx[i] = MAXMOT; else if (dx[i] < -MAXMOT) dx[i] = -MAXMOT; skip(); if (type == 'c') { dy[i] = 0; goto eat; } vflag = 1; dfact = lss; dy[i] = quant(atoi0(), VERT); if (dy[i] > MAXMOT) dy[i] = MAXMOT; else if (dy[i] < -MAXMOT) dy[i] = -MAXMOT; eat: if (cbits(c = getch()) != ' ') { /* must be the end */ if (cbits(c) != delim) { drawch = cbits(c); getch(); } i++; break; } } dfact = 1; vflag = 0; if (TROFF) { drawbuf[0] = DRAWFCN | chbits | ZBIT; drawbuf[1] = type | chbits | ZBIT; drawbuf[2] = drawch | chbits | ZBIT; for (k = 0, j = 3; k < i; k++) { drawbuf[j++] = MOT | ((dx[k] >= 0) ? dx[k] : (NMOT | -dx[k])); drawbuf[j++] = MOT | VMOT | ((dy[k] >= 0) ? dy[k] : (NMOT | -dy[k])); } if (type == DRAWELLIPSE) { drawbuf[5] = drawbuf[4] | NMOT; /* so the net vertical is zero */ j = 6; } else if (type == DRAWBUILD) { drawbuf[4] = drawbuf[3] | NMOT; /* net horizontal motion is zero */ drawbuf[2] &= ~ZBIT; /* width taken from drawing char */ j = 5; } drawbuf[j++] = DRAWFCN | chbits | ZBIT; /* marks end for ptout */ drawbuf[j] = 0; pushback(drawbuf); } } void casefc(void) { int i; Tchar j; gchtab[fc] &= ~FCBIT; fc = IMP; padc = ' '; if (skip() || ismot(j = getch()) || (i = cbits(j)) == '\n') return; fc = i; gchtab[fc] |= FCBIT; if (skip() || ismot(ch) || (ch = cbits(ch)) == fc) return; padc = ch; } Tchar setfield(int x) { Tchar rchar, ii, jj, *fp; Tchar **pp, *padptr[NPP]; Tchar fbuf[FBUFSZ]; int i, j, length, ws, npad, temp, type, savepos, savfc, savtc, savlc; static Tchar wbuf[] = { WORDSP, 0}; if (x == tabch) rchar = tabc | chbits; else if (x == ldrch) rchar = dotc | chbits; else rchar = 0; temp = npad = ws = 0; savfc = fc; savtc = tabch; savlc = ldrch; tabch = ldrch = fc = IMP; savepos = numtabp[HP].val; gchtab[tabch] &= ~TABBIT; gchtab[ldrch] &= ~LDRBIT; gchtab[fc] &= ~FCBIT; gchtab[IMP] |= TABBIT|LDRBIT|FCBIT; for (j = 0; ; j++) { if ((tabtab[j] & TABMASK) == 0) { if (x == savfc) ERROR "zero field width." WARN; jj = 0; goto rtn; } if ((length = ((tabtab[j] & TABMASK) - numtabp[HP].val)) > 0 ) break; } type = tabtab[j] & ~TABMASK; fp = fbuf; pp = padptr; if (x == savfc) { while (1) { j = cbits(ii = getch()); jj = width(ii); widthp = jj; numtabp[HP].val += jj; if (j == padc) { npad++; *pp++ = fp; if (pp > padptr + NPP - 1) break; goto s1; } else if (j == savfc) break; else if (j == '\n') { temp = j; if (nlflg && ip == 0) { numtabp[CD].val--; nlflg = 0; } break; } ws += jj; s1: *fp++ = ii; if (fp > fbuf + FBUFSZ - 3) break; } if (ws) *fp++ = WORDSP; if (!npad) { npad++; *pp++ = fp; *fp++ = 0; } *fp++ = temp; *fp = 0; temp = i = (j = length - ws) / npad; i = (i / HOR) * HOR; if ((j -= i * npad) < 0) j = -j; ii = makem(i); if (temp < 0) ii |= NMOT; for (; npad > 0; npad--) { *(*--pp) = ii; if (j) { j -= HOR; (*(*pp)) += HOR; } } pushback(fbuf); jj = 0; } else if (type == 0) { /*plain tab or leader*/ if ((j = width(rchar)) > 0) { int nchar = length / j; while (nchar-->0 && pbp < &pbbuf[NC-3]) { numtabp[HP].val += j; widthp = j; *pbp++ = rchar; } length %= j; } if (length) jj = length | MOT; else jj = getch0(); if (savepos > 0) pushback(wbuf); } else { /*center tab*/ /*right tab*/ while ((j = cbits(ii = getch())) != savtc && j != '\n' && j != savlc) { jj = width(ii); ws += jj; numtabp[HP].val += jj; widthp = jj; *fp++ = ii; if (fp > fbuf + FBUFSZ - 3) break; } *fp++ = ii; *fp = 0; if (type == RTAB) length -= ws; else length -= ws / 2; /*CTAB*/ pushback(fbuf); if ((j = width(rchar)) != 0 && length > 0) { int nchar = length / j; while (nchar-- > 0 && pbp < &pbbuf[NC-3]) *pbp++ = rchar; length %= j; } if (savepos > 0) pushback(wbuf); length = (length / HOR) * HOR; jj = makem(length); if (nlflg) { if (ip == 0) numtabp[CD].val--; nlflg = 0; } } rtn: gchtab[fc] &= ~FCBIT; gchtab[tabch] &= ~TABBIT; gchtab[ldrch] &= ~LDRBIT; fc = savfc; tabch = savtc; ldrch = savlc; gchtab[fc] |= FCBIT; gchtab[tabch] = TABBIT; gchtab[ldrch] |= LDRBIT; numtabp[HP].val = savepos; return(jj); } sed: Can't open /usr/web/plan9/sources.html