Commit | Line | Data |
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8ac0ae4b | 1 | #ifndef lint |
655e9788 | 2 | static char sccsid[] = "@(#)n9.c 2.1 (CWI) 85/07/18"; |
8ac0ae4b | 3 | #endif lint |
8ac0ae4b | 4 | #include "tdef.h" |
8ac0ae4b | 5 | #ifdef NROFF |
8ac0ae4b JA |
6 | #include "tw.h" |
7 | #endif | |
8ac0ae4b JA |
8 | #include <sgtty.h> |
9 | #include "ext.h" | |
10 | ||
655e9788 JA |
11 | /* |
12 | * troff9.c | |
13 | * | |
14 | * misc functions | |
15 | */ | |
16 | ||
8ac0ae4b JA |
17 | tchar setz() |
18 | { | |
19 | tchar i; | |
20 | ||
21 | if (!ismot(i = getch())) | |
22 | i |= ZBIT; | |
23 | return(i); | |
24 | } | |
25 | ||
8ac0ae4b JA |
26 | setline() |
27 | { | |
28 | register tchar *i; | |
29 | tchar c; | |
30 | int length; | |
31 | int w, cnt, delim, rem, temp; | |
655e9788 | 32 | tchar linebuf[NC]; |
8ac0ae4b JA |
33 | |
34 | if (ismot(c = getch())) | |
35 | return; | |
36 | delim = cbits(c); | |
37 | vflag = 0; | |
38 | dfact = EM; | |
39 | length = quant(atoi(), HOR); | |
40 | dfact = 1; | |
41 | if (!length) { | |
42 | eat(delim); | |
43 | return; | |
44 | } | |
45 | s0: | |
46 | if ((cbits(c = getch())) == delim) { | |
47 | ch = c; | |
48 | c = RULE | chbits; | |
49 | } else if (cbits(c) == FILLER) | |
50 | goto s0; | |
51 | w = width(c); | |
655e9788 | 52 | i = linebuf; |
8ac0ae4b JA |
53 | if (length < 0) { |
54 | *i++ = makem(length); | |
55 | length = -length; | |
56 | } | |
57 | if (!(cnt = length / w)) { | |
58 | *i++ = makem(-(temp = ((w - length) / 2))); | |
59 | *i++ = c; | |
60 | *i++ = makem(-(w - length - temp)); | |
61 | goto s1; | |
62 | } | |
63 | if (rem = length % w) { | |
64 | if (cbits(c) == RULE || cbits(c) == UNDERLINE || cbits(c) == ROOTEN) | |
65 | *i++ = c | ZBIT; | |
66 | *i++ = makem(rem); | |
67 | } | |
68 | if (cnt) { | |
69 | *i++ = RPT; | |
70 | *i++ = cnt; | |
71 | *i++ = c; | |
72 | } | |
73 | s1: | |
74 | *i++ = 0; | |
75 | eat(delim); | |
655e9788 | 76 | pushback(linebuf); |
8ac0ae4b JA |
77 | } |
78 | ||
79 | ||
80 | eat(c) | |
655e9788 | 81 | register int c; |
8ac0ae4b JA |
82 | { |
83 | register i; | |
84 | ||
85 | while ((i = cbits(getch())) != c && (i != '\n')) | |
86 | ; | |
87 | return(i); | |
88 | } | |
89 | ||
90 | ||
91 | setov() | |
92 | { | |
93 | register j, k; | |
655e9788 JA |
94 | tchar i, o[NOV]; |
95 | int delim, w[NOV]; | |
8ac0ae4b JA |
96 | |
97 | if (ismot(i = getch())) | |
98 | return; | |
99 | delim = cbits(i); | |
100 | for (k = 0; (k < NOV) && ((j = cbits(i = getch())) != delim) && (j != '\n'); k++) { | |
101 | o[k] = i; | |
102 | w[k] = width(i); | |
103 | } | |
104 | o[k] = w[k] = 0; | |
105 | if (o[0]) | |
106 | for (j = 1; j; ) { | |
107 | j = 0; | |
108 | for (k = 1; o[k] ; k++) { | |
109 | if (w[k-1] < w[k]) { | |
110 | j++; | |
111 | i = w[k]; | |
112 | w[k] = w[k-1]; | |
113 | w[k-1] = i; | |
114 | i = o[k]; | |
115 | o[k] = o[k-1]; | |
116 | o[k-1] = i; | |
117 | } | |
118 | } | |
119 | } | |
120 | else | |
121 | return; | |
655e9788 JA |
122 | *pbp++ = makem(w[0] / 2); |
123 | for (k = 0; o[k]; k++) | |
124 | ; | |
125 | while (k>0) { | |
126 | k--; | |
127 | *pbp++ = makem(-((w[k] + w[k+1]) / 2)); | |
128 | *pbp++ = o[k]; | |
8ac0ae4b | 129 | } |
8ac0ae4b JA |
130 | } |
131 | ||
132 | ||
133 | setbra() | |
134 | { | |
135 | register k; | |
136 | tchar i, *j, dwn; | |
137 | int cnt, delim; | |
655e9788 | 138 | tchar brabuf[NC]; |
8ac0ae4b JA |
139 | |
140 | if (ismot(i = getch())) | |
141 | return; | |
142 | delim = cbits(i); | |
655e9788 | 143 | j = brabuf + 1; |
8ac0ae4b JA |
144 | cnt = 0; |
145 | #ifdef NROFF | |
146 | dwn = (2 * t.Halfline) | MOT | VMOT; | |
147 | #endif | |
148 | #ifndef NROFF | |
149 | dwn = EM | MOT | VMOT; | |
150 | #endif | |
655e9788 | 151 | while (((k = cbits(i = getch())) != delim) && (k != '\n') && (j <= (brabuf + NC - 4))) { |
8ac0ae4b JA |
152 | *j++ = i | ZBIT; |
153 | *j++ = dwn; | |
154 | cnt++; | |
155 | } | |
156 | if (--cnt < 0) | |
157 | return; | |
158 | else if (!cnt) { | |
159 | ch = *(j - 2); | |
160 | return; | |
161 | } | |
162 | *j = 0; | |
163 | #ifdef NROFF | |
655e9788 | 164 | *--j = *brabuf = (cnt * t.Halfline) | MOT | NMOT | VMOT; |
8ac0ae4b JA |
165 | #endif |
166 | #ifndef NROFF | |
655e9788 | 167 | *--j = *brabuf = (cnt * EM) / 2 | MOT | NMOT | VMOT; |
8ac0ae4b JA |
168 | #endif |
169 | *--j &= ~ZBIT; | |
655e9788 | 170 | pushback(brabuf); |
8ac0ae4b JA |
171 | } |
172 | ||
173 | ||
174 | setvline() | |
175 | { | |
176 | register i; | |
655e9788 | 177 | tchar c, rem, ver, neg; |
8ac0ae4b | 178 | int cnt, delim, v; |
655e9788 JA |
179 | tchar vlbuf[NC]; |
180 | register tchar *vlp; | |
8ac0ae4b JA |
181 | |
182 | if (ismot(c = getch())) | |
183 | return; | |
184 | delim = cbits(c); | |
185 | dfact = lss; | |
186 | vflag++; | |
187 | i = quant(atoi(), VERT); | |
188 | dfact = 1; | |
189 | if (!i) { | |
190 | eat(delim); | |
191 | vflag = 0; | |
192 | return; | |
193 | } | |
194 | if ((cbits(c = getch())) == delim) { | |
195 | c = BOXRULE | chbits; /*default box rule*/ | |
196 | } else | |
197 | getch(); | |
198 | c |= ZBIT; | |
199 | neg = 0; | |
200 | if (i < 0) { | |
201 | i = -i; | |
202 | neg = NMOT; | |
203 | } | |
204 | #ifdef NROFF | |
205 | v = 2 * t.Halfline; | |
206 | #endif | |
207 | #ifndef NROFF | |
208 | v = EM; | |
209 | #endif | |
210 | cnt = i / v; | |
211 | rem = makem(i % v) | neg; | |
212 | ver = makem(v) | neg; | |
655e9788 | 213 | vlp = vlbuf; |
8ac0ae4b | 214 | if (!neg) |
655e9788 | 215 | *vlp++ = ver; |
8ac0ae4b | 216 | if (absmot(rem) != 0) { |
655e9788 JA |
217 | *vlp++ = c; |
218 | *vlp++ = rem; | |
8ac0ae4b | 219 | } |
655e9788 JA |
220 | while ((vlp < (vlbuf + NC - 3)) && cnt--) { |
221 | *vlp++ = c; | |
222 | *vlp++ = ver; | |
8ac0ae4b | 223 | } |
655e9788 | 224 | *(vlp - 2) &= ~ZBIT; |
8ac0ae4b | 225 | if (!neg) |
655e9788 JA |
226 | vlp--; |
227 | *vlp++ = 0; | |
228 | pushback(vlbuf); | |
8ac0ae4b JA |
229 | vflag = 0; |
230 | } | |
231 | ||
655e9788 | 232 | #define NPAIR (NC/2-6) /* max pairs in spline, etc. */ |
8ac0ae4b JA |
233 | |
234 | setdraw() /* generate internal cookies for a drawing function */ | |
235 | { | |
655e9788 JA |
236 | int i, j, k, dx[NPAIR], dy[NPAIR], delim, type; |
237 | tchar c, drawbuf[NC]; | |
238 | ||
239 | /* input is \D'f dx dy dx dy ... c' (or at least it had better be) */ | |
8ac0ae4b | 240 | /* this does drawing function f with character c and the */ |
655e9788 JA |
241 | /* specified dx,dy pairs interpreted as appropriate */ |
242 | /* pairs are deltas from last point, except for radii */ | |
8ac0ae4b | 243 | |
655e9788 | 244 | /* l dx dy: line from here by dx,dy */ |
8ac0ae4b JA |
245 | /* c x: circle of diameter x, left side here */ |
246 | /* e x y: ellipse of diameters x,y, left side here */ | |
655e9788 JA |
247 | /* a dx1 dy1 dx2 dy2: |
248 | ccw arc: ctr at dx1,dy1, then end at dx2,dy2 from there */ | |
249 | /* ~ dx1 dy1 dx2 dy2...: | |
250 | spline to dx1,dy1 to dx2,dy2 ... */ | |
251 | /* f dx dy ...: f is any other char: like spline */ | |
8ac0ae4b JA |
252 | |
253 | if (ismot(c = getch())) | |
254 | return; | |
255 | delim = cbits(c); | |
256 | type = cbits(getch()); | |
655e9788 | 257 | for (i = 0; i < NPAIR ; i++) { |
8ac0ae4b JA |
258 | c = getch(); |
259 | if (cbits(c) == delim) | |
260 | break; | |
261 | /* ought to pick up optional drawing character */ | |
262 | if (cbits(c) != ' ') | |
263 | ch = c; | |
264 | vflag = 0; | |
265 | dfact = EM; | |
266 | dx[i] = quant(atoi(), HOR); | |
267 | if (dx[i] > MAXMOT) | |
268 | dx[i] = MAXMOT; | |
269 | else if (dx[i] < -MAXMOT) | |
270 | dx[i] = -MAXMOT; | |
271 | if (cbits((c = getch())) == delim) { /* spacer */ | |
272 | dy[i++] = 0; | |
273 | break; | |
274 | } | |
275 | vflag = 1; | |
276 | dfact = lss; | |
277 | dy[i] = quant(atoi(), VERT); | |
278 | if (dy[i] > MAXMOT) | |
279 | dy[i] = MAXMOT; | |
280 | else if (dy[i] < -MAXMOT) | |
281 | dy[i] = -MAXMOT; | |
282 | } | |
283 | dfact = 1; | |
284 | vflag = 0; | |
285 | #ifndef NROFF | |
655e9788 JA |
286 | drawbuf[0] = DRAWFCN | chbits | ZBIT; |
287 | drawbuf[1] = type | chbits | ZBIT; | |
288 | drawbuf[2] = '.' | chbits | ZBIT; /* use default drawing character */ | |
8ac0ae4b | 289 | for (k = 0, j = 3; k < i; k++) { |
655e9788 JA |
290 | drawbuf[j++] = MOT | ((dx[k] >= 0) ? dx[k] : (NMOT | -dx[k])); |
291 | drawbuf[j++] = MOT | VMOT | ((dy[k] >= 0) ? dy[k] : (NMOT | -dy[k])); | |
8ac0ae4b JA |
292 | } |
293 | if (type == DRAWELLIPSE) { | |
655e9788 | 294 | drawbuf[5] = drawbuf[4] | NMOT; /* so the net vertical is zero */ |
8ac0ae4b JA |
295 | j = 6; |
296 | } | |
655e9788 JA |
297 | drawbuf[j++] = DRAWFCN | chbits | ZBIT; /* marks end for ptout */ |
298 | drawbuf[j] = 0; | |
299 | pushback(drawbuf); | |
8ac0ae4b JA |
300 | #endif |
301 | } | |
302 | ||
303 | ||
304 | casefc() | |
305 | { | |
306 | register i; | |
307 | tchar j; | |
308 | ||
655e9788 | 309 | gchtab[fc] &= ~FCBIT; |
8ac0ae4b JA |
310 | fc = IMP; |
311 | padc = ' '; | |
312 | if (skip() || ismot(j = getch()) || (i = cbits(j)) == '\n') | |
313 | return; | |
314 | fc = i; | |
655e9788 | 315 | gchtab[fc] |= FCBIT; |
8ac0ae4b JA |
316 | if (skip() || ismot(ch) || (ch = cbits(ch)) == fc) |
317 | return; | |
318 | padc = ch; | |
319 | } | |
320 | ||
321 | ||
655e9788 JA |
322 | tchar |
323 | setfield(x) | |
8ac0ae4b JA |
324 | int x; |
325 | { | |
655e9788 | 326 | register tchar ii, jj, *fp; |
8ac0ae4b | 327 | register i, j; |
655e9788 JA |
328 | int length, ws, npad, temp, type; |
329 | tchar **pp, *padptr[NPP]; | |
330 | tchar fbuf[FBUFSZ]; | |
331 | int savfc, savtc, savlc; | |
332 | tchar rchar; | |
333 | int savepos; | |
8ac0ae4b JA |
334 | |
335 | if (x == tabch) | |
336 | rchar = tabc | chbits; | |
337 | else if (x == ldrch) | |
338 | rchar = dotc | chbits; | |
339 | temp = npad = ws = 0; | |
340 | savfc = fc; | |
341 | savtc = tabch; | |
342 | savlc = ldrch; | |
343 | tabch = ldrch = fc = IMP; | |
655e9788 JA |
344 | savepos = numtab[HP].val; |
345 | gchtab[tabch] &= ~TABBIT; | |
346 | gchtab[ldrch] &= ~LDRBIT; | |
347 | gchtab[fc] &= ~FCBIT; | |
348 | gchtab[IMP] |= TABBIT|LDRBIT|FCBIT; | |
8ac0ae4b | 349 | for (j = 0; ; j++) { |
655e9788 | 350 | if ((tabtab[j] & TABMASK) == 0) { |
8ac0ae4b | 351 | if (x == savfc) |
655e9788 | 352 | errprint("zero field width."); |
8ac0ae4b JA |
353 | jj = 0; |
354 | goto rtn; | |
355 | } | |
655e9788 | 356 | if ((length = ((tabtab[j] & TABMASK) - numtab[HP].val)) > 0 ) |
8ac0ae4b JA |
357 | break; |
358 | } | |
655e9788 | 359 | type = tabtab[j] & (~TABMASK); |
8ac0ae4b JA |
360 | fp = fbuf; |
361 | pp = padptr; | |
362 | if (x == savfc) { | |
363 | while (1) { | |
655e9788 JA |
364 | j = cbits(ii = getch()); |
365 | jj = width(ii); | |
366 | widthp = jj; | |
367 | numtab[HP].val += jj; | |
368 | if (j == padc) { | |
8ac0ae4b JA |
369 | npad++; |
370 | *pp++ = fp; | |
371 | if (pp > (padptr + NPP - 1)) | |
372 | break; | |
373 | goto s1; | |
374 | } else if (j == savfc) | |
375 | break; | |
376 | else if (j == '\n') { | |
377 | temp = j; | |
378 | nlflg = 0; | |
379 | break; | |
380 | } | |
655e9788 | 381 | ws += jj; |
8ac0ae4b JA |
382 | s1: |
383 | *fp++ = ii; | |
384 | if (fp > (fbuf + FBUFSZ - 3)) | |
385 | break; | |
386 | } | |
387 | if (!npad) { | |
388 | npad++; | |
389 | *pp++ = fp; | |
390 | *fp++ = 0; | |
391 | } | |
392 | *fp++ = temp; | |
393 | *fp++ = 0; | |
394 | temp = i = (j = length - ws) / npad; | |
395 | i = (i / HOR) * HOR; | |
396 | if ((j -= i * npad) < 0) | |
397 | j = -j; | |
398 | ii = makem(i); | |
399 | if (temp < 0) | |
400 | ii |= NMOT; | |
401 | for (; npad > 0; npad--) { | |
402 | *(*--pp) = ii; | |
403 | if (j) { | |
404 | j -= HOR; | |
405 | (*(*pp)) += HOR; | |
406 | } | |
407 | } | |
655e9788 | 408 | pushback(fbuf); |
8ac0ae4b JA |
409 | jj = 0; |
410 | } else if (type == 0) { | |
411 | /*plain tab or leader*/ | |
655e9788 JA |
412 | if ((j = width(rchar)) > 0) { |
413 | int nchar = length / j; | |
414 | while (nchar-->0 && pbp < &pbbuf[NC-3]) { | |
415 | numtab[HP].val += j; | |
416 | widthp = j; | |
417 | *pbp++ = rchar; | |
418 | } | |
8ac0ae4b JA |
419 | length %= j; |
420 | } | |
421 | if (length) | |
422 | jj = length | MOT; | |
423 | else | |
424 | jj = getch0(); | |
425 | } else { | |
426 | /*center tab*/ | |
427 | /*right tab*/ | |
428 | while (((j = cbits(ii = getch())) != savtc) && (j != '\n') && (j != savlc)) { | |
655e9788 JA |
429 | jj = width(ii); |
430 | ws += jj; | |
431 | numtab[HP].val += jj; | |
432 | widthp = jj; | |
8ac0ae4b JA |
433 | *fp++ = ii; |
434 | if (fp > (fbuf + FBUFSZ - 3)) | |
435 | break; | |
436 | } | |
437 | *fp++ = ii; | |
438 | *fp++ = 0; | |
439 | if (type == RTAB) | |
440 | length -= ws; | |
441 | else | |
442 | length -= ws / 2; /*CTAB*/ | |
655e9788 JA |
443 | pushback(fbuf); |
444 | if ((j = width(rchar)) != 0 && length > 0) { | |
445 | int nchar = length / j; | |
446 | while (nchar-- > 0 && pbp < &pbbuf[NC-3]) | |
447 | *pbp++ = rchar; | |
8ac0ae4b JA |
448 | length %= j; |
449 | } | |
450 | length = (length / HOR) * HOR; | |
451 | jj = makem(length); | |
8ac0ae4b JA |
452 | nlflg = 0; |
453 | } | |
454 | rtn: | |
655e9788 JA |
455 | gchtab[fc] &= ~FCBIT; |
456 | gchtab[tabch] &= ~TABBIT; | |
457 | gchtab[ldrch] &= ~LDRBIT; | |
8ac0ae4b JA |
458 | fc = savfc; |
459 | tabch = savtc; | |
460 | ldrch = savlc; | |
655e9788 JA |
461 | gchtab[fc] |= FCBIT; |
462 | gchtab[tabch] = TABBIT; | |
463 | gchtab[ldrch] |= LDRBIT; | |
464 | numtab[HP].val = savepos; | |
8ac0ae4b JA |
465 | return(jj); |
466 | } | |
467 | ||
468 |