Annotation of mandoc/tbl_layout.c, Revision 1.49
1.49 ! schwarze 1: /* $Id: tbl_layout.c,v 1.48 2018/12/14 05:18:03 schwarze Exp $ */
1.1 kristaps 2: /*
1.22 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.42 schwarze 4: * Copyright (c) 2012, 2014, 2015, 2017 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: */
1.18 kristaps 18: #include "config.h"
1.27 schwarze 19:
20: #include <sys/types.h>
1.18 kristaps 21:
1.1 kristaps 22: #include <ctype.h>
1.44 schwarze 23: #include <stdint.h>
1.47 schwarze 24: #include <stdio.h>
1.1 kristaps 25: #include <stdlib.h>
26: #include <string.h>
1.4 kristaps 27: #include <time.h>
1.1 kristaps 28:
1.45 schwarze 29: #include "mandoc_aux.h"
1.1 kristaps 30: #include "mandoc.h"
1.45 schwarze 31: #include "tbl.h"
1.1 kristaps 32: #include "libmandoc.h"
1.46 schwarze 33: #include "tbl_int.h"
1.1 kristaps 34:
35: struct tbl_phrase {
36: char name;
37: enum tbl_cellt key;
38: };
39:
1.32 schwarze 40: static const struct tbl_phrase keys[] = {
1.1 kristaps 41: { 'c', TBL_CELL_CENTRE },
42: { 'r', TBL_CELL_RIGHT },
43: { 'l', TBL_CELL_LEFT },
44: { 'n', TBL_CELL_NUMBER },
45: { 's', TBL_CELL_SPAN },
46: { 'a', TBL_CELL_LONG },
47: { '^', TBL_CELL_DOWN },
48: { '-', TBL_CELL_HORIZ },
49: { '_', TBL_CELL_HORIZ },
1.23 schwarze 50: { '=', TBL_CELL_DHORIZ }
1.1 kristaps 51: };
52:
1.32 schwarze 53: #define KEYS_MAX ((int)(sizeof(keys)/sizeof(keys[0])))
54:
55: static void mods(struct tbl_node *, struct tbl_cell *,
1.5 kristaps 56: int, const char *, int *);
1.32 schwarze 57: static void cell(struct tbl_node *, struct tbl_row *,
1.5 kristaps 58: int, const char *, int *);
1.23 schwarze 59: static struct tbl_cell *cell_alloc(struct tbl_node *, struct tbl_row *,
1.33 schwarze 60: enum tbl_cellt);
1.1 kristaps 61:
1.26 schwarze 62:
1.32 schwarze 63: static void
1.26 schwarze 64: mods(struct tbl_node *tbl, struct tbl_cell *cp,
1.1 kristaps 65: int ln, const char *p, int *pos)
66: {
1.32 schwarze 67: char *endptr;
1.49 ! schwarze 68: unsigned long spacing;
1.42 schwarze 69: size_t sz;
1.20 kristaps 70:
1.32 schwarze 71: mod:
72: while (p[*pos] == ' ' || p[*pos] == '\t')
73: (*pos)++;
1.20 kristaps 74:
1.32 schwarze 75: /* Row delimiters and cell specifiers end modifier lists. */
1.1 kristaps 76:
1.33 schwarze 77: if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
1.32 schwarze 78: return;
1.12 kristaps 79:
80: /* Throw away parenthesised expression. */
81:
82: if ('(' == p[*pos]) {
83: (*pos)++;
84: while (p[*pos] && ')' != p[*pos])
85: (*pos)++;
86: if (')' == p[*pos]) {
87: (*pos)++;
88: goto mod;
89: }
1.48 schwarze 90: mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, ln, *pos, NULL);
1.32 schwarze 91: return;
1.1 kristaps 92: }
93:
94: /* Parse numerical spacing from modifier string. */
95:
96: if (isdigit((unsigned char)p[*pos])) {
1.49 ! schwarze 97: if ((spacing = strtoul(p + *pos, &endptr, 10)) > 9)
! 98: mandoc_msg(MANDOCERR_TBLLAYOUT_SPC, ln, *pos,
! 99: "%lu", spacing);
! 100: else
! 101: cp->spacing = spacing;
1.32 schwarze 102: *pos = endptr - p;
1.1 kristaps 103: goto mod;
1.26 schwarze 104: }
1.1 kristaps 105:
1.13 joerg 106: switch (tolower((unsigned char)p[(*pos)++])) {
1.32 schwarze 107: case 'b':
1.38 schwarze 108: cp->flags |= TBL_CELL_BOLD;
109: goto mod;
1.32 schwarze 110: case 'd':
111: cp->flags |= TBL_CELL_BALIGN;
1.1 kristaps 112: goto mod;
1.26 schwarze 113: case 'e':
1.1 kristaps 114: cp->flags |= TBL_CELL_EQUAL;
115: goto mod;
1.32 schwarze 116: case 'f':
117: break;
1.38 schwarze 118: case 'i':
119: cp->flags |= TBL_CELL_ITALIC;
120: goto mod;
1.32 schwarze 121: case 'm':
1.48 schwarze 122: mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, ln, *pos, "m");
1.32 schwarze 123: goto mod;
124: case 'p':
125: case 'v':
126: if (p[*pos] == '-' || p[*pos] == '+')
127: (*pos)++;
128: while (isdigit((unsigned char)p[*pos]))
129: (*pos)++;
130: goto mod;
1.26 schwarze 131: case 't':
1.1 kristaps 132: cp->flags |= TBL_CELL_TALIGN;
133: goto mod;
1.32 schwarze 134: case 'u':
135: cp->flags |= TBL_CELL_UP;
1.10 schwarze 136: goto mod;
1.42 schwarze 137: case 'w':
138: sz = 0;
139: if (p[*pos] == '(') {
140: (*pos)++;
141: while (p[*pos + sz] != '\0' && p[*pos + sz] != ')')
142: sz++;
143: } else
144: while (isdigit((unsigned char)p[*pos + sz]))
145: sz++;
146: if (sz) {
147: free(cp->wstr);
148: cp->wstr = mandoc_strndup(p + *pos, sz);
149: *pos += sz;
150: if (p[*pos] == ')')
151: (*pos)++;
152: }
1.29 schwarze 153: goto mod;
154: case 'x':
155: cp->flags |= TBL_CELL_WMAX;
1.1 kristaps 156: goto mod;
1.32 schwarze 157: case 'z':
158: cp->flags |= TBL_CELL_WIGN;
159: goto mod;
1.33 schwarze 160: case '|':
161: if (cp->vert < 2)
162: cp->vert++;
163: else
164: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
1.48 schwarze 165: ln, *pos - 1, NULL);
1.33 schwarze 166: goto mod;
1.1 kristaps 167: default:
1.48 schwarze 168: mandoc_msg(MANDOCERR_TBLLAYOUT_CHAR,
1.32 schwarze 169: ln, *pos - 1, "%c", p[*pos - 1]);
170: goto mod;
1.1 kristaps 171: }
172:
1.38 schwarze 173: /* Ignore parenthised font names for now. */
174:
175: if (p[*pos] == '(')
176: goto mod;
177:
178: /* Support only one-character font-names for now. */
179:
180: if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
1.48 schwarze 181: mandoc_msg(MANDOCERR_FT_BAD,
1.38 schwarze 182: ln, *pos, "TS %s", p + *pos - 1);
183: if (p[*pos] != '\0')
184: (*pos)++;
185: if (p[*pos] != '\0')
186: (*pos)++;
187: goto mod;
188: }
189:
190: switch (p[(*pos)++]) {
1.26 schwarze 191: case '3':
1.38 schwarze 192: case 'B':
1.1 kristaps 193: cp->flags |= TBL_CELL_BOLD;
194: goto mod;
1.26 schwarze 195: case '2':
1.38 schwarze 196: case 'I':
1.1 kristaps 197: cp->flags |= TBL_CELL_ITALIC;
1.21 kristaps 198: goto mod;
1.26 schwarze 199: case '1':
1.38 schwarze 200: case 'R':
1.1 kristaps 201: goto mod;
202: default:
1.48 schwarze 203: mandoc_msg(MANDOCERR_FT_BAD,
1.28 schwarze 204: ln, *pos - 1, "TS f%c", p[*pos - 1]);
205: goto mod;
1.1 kristaps 206: }
207: }
208:
1.32 schwarze 209: static void
1.26 schwarze 210: cell(struct tbl_node *tbl, struct tbl_row *rp,
1.1 kristaps 211: int ln, const char *p, int *pos)
212: {
1.33 schwarze 213: int i;
1.1 kristaps 214: enum tbl_cellt c;
215:
1.33 schwarze 216: /* Handle leading vertical lines */
1.23 schwarze 217:
1.32 schwarze 218: while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
219: if (p[*pos] == '|') {
1.33 schwarze 220: if (rp->vert < 2)
221: rp->vert++;
1.32 schwarze 222: else
223: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
1.48 schwarze 224: ln, *pos, NULL);
1.32 schwarze 225: }
1.23 schwarze 226: (*pos)++;
1.32 schwarze 227: }
1.25 schwarze 228:
1.33 schwarze 229: again:
230: while (p[*pos] == ' ' || p[*pos] == '\t')
231: (*pos)++;
1.25 schwarze 232:
1.33 schwarze 233: if (p[*pos] == '.' || p[*pos] == '\0')
1.32 schwarze 234: return;
1.23 schwarze 235:
236: /* Parse the column position (`c', `l', `r', ...). */
1.1 kristaps 237:
238: for (i = 0; i < KEYS_MAX; i++)
1.13 joerg 239: if (tolower((unsigned char)p[*pos]) == keys[i].name)
1.1 kristaps 240: break;
241:
1.32 schwarze 242: if (i == KEYS_MAX) {
1.48 schwarze 243: mandoc_msg(MANDOCERR_TBLLAYOUT_CHAR,
1.32 schwarze 244: ln, *pos, "%c", p[*pos]);
245: (*pos)++;
246: goto again;
1.1 kristaps 247: }
1.11 kristaps 248: c = keys[i].key;
249:
1.32 schwarze 250: /* Special cases of spanners. */
1.16 kristaps 251:
1.32 schwarze 252: if (c == TBL_CELL_SPAN) {
253: if (rp->last == NULL)
1.48 schwarze 254: mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN, ln, *pos, NULL);
1.32 schwarze 255: else if (rp->last->pos == TBL_CELL_HORIZ ||
256: rp->last->pos == TBL_CELL_DHORIZ)
257: c = rp->last->pos;
258: } else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
1.48 schwarze 259: mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN, ln, *pos, NULL);
1.11 kristaps 260:
1.1 kristaps 261: (*pos)++;
262:
263: /* Allocate cell then parse its modifiers. */
264:
1.33 schwarze 265: mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
1.1 kristaps 266: }
267:
1.31 schwarze 268: void
1.34 schwarze 269: tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1 kristaps 270: {
271: struct tbl_row *rp;
272:
1.30 schwarze 273: rp = NULL;
274: for (;;) {
275: /* Skip whitespace before and after each cell. */
1.1 kristaps 276:
1.32 schwarze 277: while (p[pos] == ' ' || p[pos] == '\t')
1.30 schwarze 278: pos++;
1.1 kristaps 279:
1.30 schwarze 280: switch (p[pos]) {
281: case ',': /* Next row on this input line. */
282: pos++;
283: rp = NULL;
284: continue;
285: case '\0': /* Next row on next input line. */
1.31 schwarze 286: return;
1.30 schwarze 287: case '.': /* End of layout. */
288: pos++;
289: tbl->part = TBL_PART_DATA;
1.33 schwarze 290:
291: /*
292: * When the layout is completely empty,
293: * default to one left-justified column.
294: */
295:
296: if (tbl->first_row == NULL) {
1.35 schwarze 297: tbl->first_row = tbl->last_row =
298: mandoc_calloc(1, sizeof(*rp));
299: }
300: if (tbl->first_row->first == NULL) {
1.33 schwarze 301: mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
1.48 schwarze 302: ln, pos, NULL);
1.35 schwarze 303: cell_alloc(tbl, tbl->first_row,
304: TBL_CELL_LEFT);
1.43 schwarze 305: if (tbl->opts.lvert < tbl->first_row->vert)
306: tbl->opts.lvert = tbl->first_row->vert;
1.31 schwarze 307: return;
1.33 schwarze 308: }
309:
310: /*
311: * Search for the widest line
312: * along the left and right margins.
313: */
314:
315: for (rp = tbl->first_row; rp; rp = rp->next) {
316: if (tbl->opts.lvert < rp->vert)
317: tbl->opts.lvert = rp->vert;
318: if (rp->last != NULL &&
1.37 schwarze 319: rp->last->col + 1 == tbl->opts.cols &&
1.33 schwarze 320: tbl->opts.rvert < rp->last->vert)
321: tbl->opts.rvert = rp->last->vert;
1.35 schwarze 322:
323: /* If the last line is empty, drop it. */
324:
325: if (rp->next != NULL &&
326: rp->next->first == NULL) {
327: free(rp->next);
328: rp->next = NULL;
1.39 schwarze 329: tbl->last_row = rp;
1.35 schwarze 330: }
1.33 schwarze 331: }
1.31 schwarze 332: return;
1.30 schwarze 333: default: /* Cell. */
334: break;
335: }
336:
1.35 schwarze 337: /*
338: * If the last line had at least one cell,
339: * start a new one; otherwise, continue it.
340: */
341:
342: if (rp == NULL) {
343: if (tbl->last_row == NULL ||
344: tbl->last_row->first != NULL) {
345: rp = mandoc_calloc(1, sizeof(*rp));
346: if (tbl->last_row)
347: tbl->last_row->next = rp;
348: else
349: tbl->first_row = rp;
350: tbl->last_row = rp;
351: } else
352: rp = tbl->last_row;
1.30 schwarze 353: }
1.32 schwarze 354: cell(tbl, rp, ln, p, &pos);
1.1 kristaps 355: }
356: }
1.5 kristaps 357:
358: static struct tbl_cell *
1.33 schwarze 359: cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
1.5 kristaps 360: {
361: struct tbl_cell *p, *pp;
362:
1.36 schwarze 363: p = mandoc_calloc(1, sizeof(*p));
1.44 schwarze 364: p->spacing = SIZE_MAX;
1.37 schwarze 365: p->pos = pos;
1.5 kristaps 366:
1.36 schwarze 367: if ((pp = rp->last) != NULL) {
1.23 schwarze 368: pp->next = p;
1.37 schwarze 369: p->col = pp->col + 1;
370: } else
1.23 schwarze 371: rp->first = p;
372: rp->last = p;
1.5 kristaps 373:
1.37 schwarze 374: if (tbl->opts.cols <= p->col)
375: tbl->opts.cols = p->col + 1;
1.5 kristaps 376:
1.40 schwarze 377: return p;
1.5 kristaps 378: }
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