Annotation of mandoc/tbl_term.c, Revision 1.25
1.25 ! schwarze 1: /* $Id: tbl_term.c,v 1.24 2012/05/27 18:02:49 schwarze Exp $ */
1.1 kristaps 2: /*
1.20 kristaps 3: * Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.23 schwarze 4: * Copyright (c) 2011, 2012 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18: #ifdef HAVE_CONFIG_H
19: #include "config.h"
20: #endif
21:
22: #include <assert.h>
23: #include <stdio.h>
24: #include <stdlib.h>
25: #include <string.h>
26:
27: #include "mandoc.h"
28: #include "out.h"
29: #include "term.h"
30:
1.11 kristaps 31: static size_t term_tbl_len(size_t, void *);
32: static size_t term_tbl_strlen(const char *, void *);
1.12 kristaps 33: static void tbl_char(struct termp *, char, size_t);
1.25 ! schwarze 34: static void tbl_data(struct termp *, const struct tbl_opts *,
1.11 kristaps 35: const struct tbl_dat *,
36: const struct roffcol *);
1.21 schwarze 37: static size_t tbl_rulewidth(struct termp *, const struct tbl_head *);
38: static void tbl_hframe(struct termp *, const struct tbl_span *, int);
1.11 kristaps 39: static void tbl_literal(struct termp *, const struct tbl_dat *,
40: const struct roffcol *);
1.25 ! schwarze 41: static void tbl_number(struct termp *, const struct tbl_opts *,
1.11 kristaps 42: const struct tbl_dat *,
43: const struct roffcol *);
44: static void tbl_hrule(struct termp *, const struct tbl_span *);
45: static void tbl_vrule(struct termp *, const struct tbl_head *);
46:
47:
48: static size_t
49: term_tbl_strlen(const char *p, void *arg)
50: {
51:
52: return(term_strlen((const struct termp *)arg, p));
53: }
54:
55: static size_t
56: term_tbl_len(size_t sz, void *arg)
57: {
58:
59: return(term_len((const struct termp *)arg, sz));
60: }
1.1 kristaps 61:
62: void
63: term_tbl(struct termp *tp, const struct tbl_span *sp)
64: {
1.11 kristaps 65: const struct tbl_head *hp;
66: const struct tbl_dat *dp;
67: struct roffcol *col;
1.16 kristaps 68: int spans;
1.12 kristaps 69: size_t rmargin, maxrmargin;
1.11 kristaps 70:
71: rmargin = tp->rmargin;
72: maxrmargin = tp->maxrmargin;
73:
74: tp->rmargin = tp->maxrmargin = TERM_MAXMARGIN;
1.1 kristaps 75:
1.4 kristaps 76: /* Inhibit printing of spaces: we do padding ourselves. */
77:
78: tp->flags |= TERMP_NONOSPACE;
79: tp->flags |= TERMP_NOSPACE;
80:
81: /*
1.11 kristaps 82: * The first time we're invoked for a given table block,
83: * calculate the table widths and decimal positions.
1.4 kristaps 84: */
85:
1.2 kristaps 86: if (TBL_SPAN_FIRST & sp->flags) {
1.11 kristaps 87: term_flushln(tp);
88:
89: tp->tbl.len = term_tbl_len;
90: tp->tbl.slen = term_tbl_strlen;
91: tp->tbl.arg = tp;
1.4 kristaps 92:
1.11 kristaps 93: tblcalc(&tp->tbl, sp);
1.2 kristaps 94: }
1.1 kristaps 95:
1.4 kristaps 96: /* Horizontal frame at the start of boxed tables. */
97:
1.21 schwarze 98: if (TBL_SPAN_FIRST & sp->flags) {
1.25 ! schwarze 99: if (TBL_OPT_DBOX & sp->opts->opts)
1.21 schwarze 100: tbl_hframe(tp, sp, 1);
1.25 ! schwarze 101: if (TBL_OPT_DBOX & sp->opts->opts ||
! 102: TBL_OPT_BOX & sp->opts->opts)
1.21 schwarze 103: tbl_hframe(tp, sp, 0);
104: }
1.1 kristaps 105:
1.4 kristaps 106: /* Vertical frame at the start of each row. */
1.1 kristaps 107:
1.25 ! schwarze 108: if (TBL_OPT_BOX & sp->opts->opts || TBL_OPT_DBOX & sp->opts->opts)
1.21 schwarze 109: term_word(tp, TBL_SPAN_HORIZ == sp->pos ||
110: TBL_SPAN_DHORIZ == sp->pos ? "+" : "|");
1.1 kristaps 111:
1.4 kristaps 112: /*
113: * Now print the actual data itself depending on the span type.
114: * Spanner spans get a horizontal rule; data spanners have their
115: * data printed by matching data to header.
116: */
117:
1.1 kristaps 118: switch (sp->pos) {
119: case (TBL_SPAN_HORIZ):
120: /* FALLTHROUGH */
121: case (TBL_SPAN_DHORIZ):
122: tbl_hrule(tp, sp);
123: break;
1.4 kristaps 124: case (TBL_SPAN_DATA):
125: /* Iterate over template headers. */
126: dp = sp->first;
1.16 kristaps 127: spans = 0;
1.4 kristaps 128: for (hp = sp->head; hp; hp = hp->next) {
1.22 schwarze 129:
1.16 kristaps 130: /*
131: * If the current data header is invoked during
132: * a spanner ("spans" > 0), don't emit anything
133: * at all.
134: */
1.11 kristaps 135:
1.16 kristaps 136: if (--spans >= 0)
137: continue;
138:
1.22 schwarze 139: /* Separate columns. */
1.21 schwarze 140:
1.22 schwarze 141: if (NULL != hp->prev)
142: tbl_vrule(tp, hp);
1.21 schwarze 143:
1.11 kristaps 144: col = &tp->tbl.cols[hp->ident];
1.25 ! schwarze 145: tbl_data(tp, sp->opts, dp, col);
1.1 kristaps 146:
1.16 kristaps 147: /*
148: * Go to the next data cell and assign the
149: * number of subsequent spans, if applicable.
150: */
151:
152: if (dp) {
153: spans = dp->spans;
1.1 kristaps 154: dp = dp->next;
1.16 kristaps 155: }
1.1 kristaps 156: }
1.4 kristaps 157: break;
1.1 kristaps 158: }
159:
1.21 schwarze 160: /* Vertical frame at the end of each row. */
161:
1.25 ! schwarze 162: if (TBL_OPT_BOX & sp->opts->opts || TBL_OPT_DBOX & sp->opts->opts)
1.21 schwarze 163: term_word(tp, TBL_SPAN_HORIZ == sp->pos ||
164: TBL_SPAN_DHORIZ == sp->pos ? "+" : " |");
1.1 kristaps 165: term_flushln(tp);
166:
1.4 kristaps 167: /*
168: * If we're the last row, clean up after ourselves: clear the
169: * existing table configuration and set it to NULL.
170: */
171:
1.2 kristaps 172: if (TBL_SPAN_LAST & sp->flags) {
1.25 ! schwarze 173: if (TBL_OPT_DBOX & sp->opts->opts ||
! 174: TBL_OPT_BOX & sp->opts->opts) {
1.21 schwarze 175: tbl_hframe(tp, sp, 0);
1.24 schwarze 176: tp->skipvsp = 1;
177: }
1.25 ! schwarze 178: if (TBL_OPT_DBOX & sp->opts->opts) {
1.21 schwarze 179: tbl_hframe(tp, sp, 1);
1.24 schwarze 180: tp->skipvsp = 2;
181: }
1.11 kristaps 182: assert(tp->tbl.cols);
183: free(tp->tbl.cols);
184: tp->tbl.cols = NULL;
1.2 kristaps 185: }
1.1 kristaps 186:
187: tp->flags &= ~TERMP_NONOSPACE;
1.11 kristaps 188: tp->rmargin = rmargin;
189: tp->maxrmargin = maxrmargin;
1.1 kristaps 190:
191: }
192:
1.21 schwarze 193: /*
194: * Horizontal rules extend across the entire table.
195: * Calculate the width by iterating over columns.
196: */
197: static size_t
198: tbl_rulewidth(struct termp *tp, const struct tbl_head *hp)
199: {
200: size_t width;
201:
202: width = tp->tbl.cols[hp->ident].width;
1.22 schwarze 203:
204: /* Account for leading blanks. */
205: if (hp->prev)
206: width += 2 - hp->vert;
207:
208: /* Account for trailing blank. */
209: width++;
210:
1.21 schwarze 211: return(width);
212: }
213:
214: /*
215: * Rules inside the table can be single or double
216: * and have crossings with vertical rules marked with pluses.
217: */
1.1 kristaps 218: static void
219: tbl_hrule(struct termp *tp, const struct tbl_span *sp)
220: {
221: const struct tbl_head *hp;
222: char c;
223:
224: c = '-';
225: if (TBL_SPAN_DHORIZ == sp->pos)
226: c = '=';
227:
1.22 schwarze 228: for (hp = sp->head; hp; hp = hp->next) {
229: if (hp->prev && hp->vert)
230: tbl_char(tp, '+', hp->vert);
231: tbl_char(tp, c, tbl_rulewidth(tp, hp));
232: }
1.1 kristaps 233: }
234:
1.21 schwarze 235: /*
236: * Rules above and below the table are always single
237: * and have an additional plus at the beginning and end.
238: * For double frames, this function is called twice,
239: * and the outer one does not have crossings.
240: */
1.1 kristaps 241: static void
1.21 schwarze 242: tbl_hframe(struct termp *tp, const struct tbl_span *sp, int outer)
1.1 kristaps 243: {
244: const struct tbl_head *hp;
245:
246: term_word(tp, "+");
1.22 schwarze 247: for (hp = sp->head; hp; hp = hp->next) {
248: if (hp->prev && hp->vert)
249: tbl_char(tp, (outer ? '-' : '+'), hp->vert);
250: tbl_char(tp, '-', tbl_rulewidth(tp, hp));
251: }
1.1 kristaps 252: term_word(tp, "+");
253: term_flushln(tp);
254: }
255:
256: static void
1.25 ! schwarze 257: tbl_data(struct termp *tp, const struct tbl_opts *opts,
1.2 kristaps 258: const struct tbl_dat *dp,
1.11 kristaps 259: const struct roffcol *col)
1.1 kristaps 260: {
261:
262: if (NULL == dp) {
1.11 kristaps 263: tbl_char(tp, ASCII_NBRSP, col->width);
1.1 kristaps 264: return;
265: }
1.16 kristaps 266: assert(dp->layout);
1.1 kristaps 267:
268: switch (dp->pos) {
1.10 kristaps 269: case (TBL_DATA_NONE):
1.11 kristaps 270: tbl_char(tp, ASCII_NBRSP, col->width);
1.10 kristaps 271: return;
1.1 kristaps 272: case (TBL_DATA_HORIZ):
273: /* FALLTHROUGH */
1.7 kristaps 274: case (TBL_DATA_NHORIZ):
1.11 kristaps 275: tbl_char(tp, '-', col->width);
1.7 kristaps 276: return;
277: case (TBL_DATA_NDHORIZ):
278: /* FALLTHROUGH */
1.1 kristaps 279: case (TBL_DATA_DHORIZ):
1.11 kristaps 280: tbl_char(tp, '=', col->width);
1.1 kristaps 281: return;
282: default:
283: break;
284: }
285:
1.16 kristaps 286: switch (dp->layout->pos) {
1.1 kristaps 287: case (TBL_CELL_HORIZ):
1.11 kristaps 288: tbl_char(tp, '-', col->width);
1.7 kristaps 289: break;
1.1 kristaps 290: case (TBL_CELL_DHORIZ):
1.11 kristaps 291: tbl_char(tp, '=', col->width);
1.1 kristaps 292: break;
293: case (TBL_CELL_LONG):
294: /* FALLTHROUGH */
295: case (TBL_CELL_CENTRE):
296: /* FALLTHROUGH */
297: case (TBL_CELL_LEFT):
298: /* FALLTHROUGH */
299: case (TBL_CELL_RIGHT):
1.11 kristaps 300: tbl_literal(tp, dp, col);
1.1 kristaps 301: break;
302: case (TBL_CELL_NUMBER):
1.25 ! schwarze 303: tbl_number(tp, opts, dp, col);
1.18 kristaps 304: break;
305: case (TBL_CELL_DOWN):
306: tbl_char(tp, ASCII_NBRSP, col->width);
1.1 kristaps 307: break;
308: default:
309: abort();
310: /* NOTREACHED */
311: }
312: }
1.11 kristaps 313:
1.1 kristaps 314: static void
1.11 kristaps 315: tbl_vrule(struct termp *tp, const struct tbl_head *hp)
1.1 kristaps 316: {
317:
1.22 schwarze 318: tbl_char(tp, ASCII_NBRSP, 1);
319: if (0 < hp->vert)
320: tbl_char(tp, '|', hp->vert);
321: if (2 > hp->vert)
322: tbl_char(tp, ASCII_NBRSP, 2 - hp->vert);
1.1 kristaps 323: }
324:
325: static void
1.12 kristaps 326: tbl_char(struct termp *tp, char c, size_t len)
1.1 kristaps 327: {
1.12 kristaps 328: size_t i, sz;
329: char cp[2];
330:
331: cp[0] = c;
332: cp[1] = '\0';
1.1 kristaps 333:
1.3 kristaps 334: sz = term_strlen(tp, cp);
335:
336: for (i = 0; i < len; i += sz)
1.1 kristaps 337: term_word(tp, cp);
338: }
339:
340: static void
1.11 kristaps 341: tbl_literal(struct termp *tp, const struct tbl_dat *dp,
342: const struct roffcol *col)
1.1 kristaps 343: {
1.23 schwarze 344: struct tbl_head *hp;
345: size_t width, len, padl, padr;
346: int spans;
1.1 kristaps 347:
1.17 kristaps 348: assert(dp->string);
1.21 schwarze 349: len = term_strlen(tp, dp->string);
1.23 schwarze 350:
351: hp = dp->layout->head->next;
352: width = col->width;
353: for (spans = dp->spans; spans--; hp = hp->next)
354: width += tp->tbl.cols[hp->ident].width + 3;
355:
356: padr = width > len ? width - len : 0;
1.21 schwarze 357: padl = 0;
1.1 kristaps 358:
1.16 kristaps 359: switch (dp->layout->pos) {
1.1 kristaps 360: case (TBL_CELL_LONG):
1.21 schwarze 361: padl = term_len(tp, 1);
362: padr = padr > padl ? padr - padl : 0;
1.1 kristaps 363: break;
364: case (TBL_CELL_CENTRE):
1.21 schwarze 365: if (2 > padr)
1.19 schwarze 366: break;
1.21 schwarze 367: padl = padr / 2;
1.19 schwarze 368: padr -= padl;
1.1 kristaps 369: break;
370: case (TBL_CELL_RIGHT):
1.21 schwarze 371: padl = padr;
372: padr = 0;
1.1 kristaps 373: break;
374: default:
375: break;
376: }
377:
378: tbl_char(tp, ASCII_NBRSP, padl);
1.17 kristaps 379: term_word(tp, dp->string);
1.21 schwarze 380: tbl_char(tp, ASCII_NBRSP, padr);
1.1 kristaps 381: }
382:
383: static void
1.25 ! schwarze 384: tbl_number(struct termp *tp, const struct tbl_opts *opts,
1.2 kristaps 385: const struct tbl_dat *dp,
1.11 kristaps 386: const struct roffcol *col)
1.1 kristaps 387: {
1.11 kristaps 388: char *cp;
389: char buf[2];
390: size_t sz, psz, ssz, d, padl;
391: int i;
1.1 kristaps 392:
393: /*
394: * See calc_data_number(). Left-pad by taking the offset of our
395: * and the maximum decimal; right-pad by the remaining amount.
396: */
397:
1.17 kristaps 398: assert(dp->string);
1.2 kristaps 399:
1.17 kristaps 400: sz = term_strlen(tp, dp->string);
1.2 kristaps 401:
1.25 ! schwarze 402: buf[0] = opts->decimal;
1.11 kristaps 403: buf[1] = '\0';
1.2 kristaps 404:
1.11 kristaps 405: psz = term_strlen(tp, buf);
1.10 kristaps 406:
1.25 ! schwarze 407: if (NULL != (cp = strrchr(dp->string, opts->decimal))) {
1.5 kristaps 408: buf[1] = '\0';
1.17 kristaps 409: for (ssz = 0, i = 0; cp != &dp->string[i]; i++) {
410: buf[0] = dp->string[i];
1.5 kristaps 411: ssz += term_strlen(tp, buf);
412: }
413: d = ssz + psz;
414: } else
415: d = sz + psz;
1.2 kristaps 416:
1.11 kristaps 417: padl = col->decimal - d;
1.2 kristaps 418:
1.11 kristaps 419: tbl_char(tp, ASCII_NBRSP, padl);
1.17 kristaps 420: term_word(tp, dp->string);
1.21 schwarze 421: if (col->width > sz + padl)
422: tbl_char(tp, ASCII_NBRSP, col->width - sz - padl);
1.2 kristaps 423: }
424:
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