Annotation of src/usr.bin/mandoc/tbl_layout.c, Revision 1.35
1.35 ! schwarze 1: /* $OpenBSD: tbl_layout.c,v 1.34 2018/12/14 01:17:46 schwarze Exp $ */
1.1 schwarze 2: /*
1.4 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.29 schwarze 4: * Copyright (c) 2012, 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 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: */
1.16 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <ctype.h>
1.31 schwarze 21: #include <stdint.h>
1.34 schwarze 22: #include <stdio.h>
1.1 schwarze 23: #include <stdlib.h>
24: #include <string.h>
1.4 schwarze 25: #include <time.h>
1.1 schwarze 26:
1.32 schwarze 27: #include "mandoc_aux.h"
1.4 schwarze 28: #include "mandoc.h"
1.32 schwarze 29: #include "tbl.h"
1.4 schwarze 30: #include "libmandoc.h"
1.33 schwarze 31: #include "tbl_int.h"
1.1 schwarze 32:
33: struct tbl_phrase {
34: char name;
35: enum tbl_cellt key;
36: };
37:
1.19 schwarze 38: static const struct tbl_phrase keys[] = {
1.1 schwarze 39: { 'c', TBL_CELL_CENTRE },
40: { 'r', TBL_CELL_RIGHT },
41: { 'l', TBL_CELL_LEFT },
42: { 'n', TBL_CELL_NUMBER },
43: { 's', TBL_CELL_SPAN },
44: { 'a', TBL_CELL_LONG },
45: { '^', TBL_CELL_DOWN },
46: { '-', TBL_CELL_HORIZ },
47: { '_', TBL_CELL_HORIZ },
1.11 schwarze 48: { '=', TBL_CELL_DHORIZ }
1.1 schwarze 49: };
50:
1.19 schwarze 51: #define KEYS_MAX ((int)(sizeof(keys)/sizeof(keys[0])))
52:
53: static void mods(struct tbl_node *, struct tbl_cell *,
1.4 schwarze 54: int, const char *, int *);
1.19 schwarze 55: static void cell(struct tbl_node *, struct tbl_row *,
1.1 schwarze 56: int, const char *, int *);
1.11 schwarze 57: static struct tbl_cell *cell_alloc(struct tbl_node *, struct tbl_row *,
1.20 schwarze 58: enum tbl_cellt);
1.1 schwarze 59:
1.14 schwarze 60:
1.19 schwarze 61: static void
1.14 schwarze 62: mods(struct tbl_node *tbl, struct tbl_cell *cp,
1.4 schwarze 63: int ln, const char *p, int *pos)
1.1 schwarze 64: {
1.19 schwarze 65: char *endptr;
1.29 schwarze 66: size_t sz;
1.1 schwarze 67:
1.19 schwarze 68: mod:
69: while (p[*pos] == ' ' || p[*pos] == '\t')
70: (*pos)++;
1.9 schwarze 71:
1.19 schwarze 72: /* Row delimiters and cell specifiers end modifier lists. */
1.9 schwarze 73:
1.20 schwarze 74: if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
1.19 schwarze 75: return;
1.1 schwarze 76:
1.6 schwarze 77: /* Throw away parenthesised expression. */
78:
79: if ('(' == p[*pos]) {
80: (*pos)++;
81: while (p[*pos] && ')' != p[*pos])
82: (*pos)++;
83: if (')' == p[*pos]) {
84: (*pos)++;
85: goto mod;
86: }
1.35 ! schwarze 87: mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, ln, *pos, NULL);
1.19 schwarze 88: return;
1.6 schwarze 89: }
90:
1.1 schwarze 91: /* Parse numerical spacing from modifier string. */
92:
1.4 schwarze 93: if (isdigit((unsigned char)p[*pos])) {
1.19 schwarze 94: cp->spacing = strtoull(p + *pos, &endptr, 10);
95: *pos = endptr - p;
1.4 schwarze 96: goto mod;
1.14 schwarze 97: }
1.1 schwarze 98:
1.6 schwarze 99: switch (tolower((unsigned char)p[(*pos)++])) {
1.19 schwarze 100: case 'b':
1.25 schwarze 101: cp->flags |= TBL_CELL_BOLD;
102: goto mod;
1.19 schwarze 103: case 'd':
104: cp->flags |= TBL_CELL_BALIGN;
1.4 schwarze 105: goto mod;
1.14 schwarze 106: case 'e':
1.1 schwarze 107: cp->flags |= TBL_CELL_EQUAL;
1.4 schwarze 108: goto mod;
1.19 schwarze 109: case 'f':
110: break;
1.25 schwarze 111: case 'i':
112: cp->flags |= TBL_CELL_ITALIC;
113: goto mod;
1.19 schwarze 114: case 'm':
1.35 ! schwarze 115: mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, ln, *pos, "m");
1.19 schwarze 116: goto mod;
117: case 'p':
118: case 'v':
119: if (p[*pos] == '-' || p[*pos] == '+')
120: (*pos)++;
121: while (isdigit((unsigned char)p[*pos]))
122: (*pos)++;
123: goto mod;
1.14 schwarze 124: case 't':
1.1 schwarze 125: cp->flags |= TBL_CELL_TALIGN;
1.4 schwarze 126: goto mod;
1.19 schwarze 127: case 'u':
128: cp->flags |= TBL_CELL_UP;
1.5 schwarze 129: goto mod;
1.29 schwarze 130: case 'w':
131: sz = 0;
132: if (p[*pos] == '(') {
133: (*pos)++;
134: while (p[*pos + sz] != '\0' && p[*pos + sz] != ')')
135: sz++;
136: } else
137: while (isdigit((unsigned char)p[*pos + sz]))
138: sz++;
139: if (sz) {
140: free(cp->wstr);
141: cp->wstr = mandoc_strndup(p + *pos, sz);
142: *pos += sz;
143: if (p[*pos] == ')')
144: (*pos)++;
145: }
1.16 schwarze 146: goto mod;
147: case 'x':
148: cp->flags |= TBL_CELL_WMAX;
1.4 schwarze 149: goto mod;
1.19 schwarze 150: case 'z':
151: cp->flags |= TBL_CELL_WIGN;
152: goto mod;
1.20 schwarze 153: case '|':
154: if (cp->vert < 2)
155: cp->vert++;
156: else
157: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
1.35 ! schwarze 158: ln, *pos - 1, NULL);
1.20 schwarze 159: goto mod;
1.1 schwarze 160: default:
1.35 ! schwarze 161: mandoc_msg(MANDOCERR_TBLLAYOUT_CHAR,
1.19 schwarze 162: ln, *pos - 1, "%c", p[*pos - 1]);
163: goto mod;
1.1 schwarze 164: }
165:
1.25 schwarze 166: /* Ignore parenthised font names for now. */
167:
168: if (p[*pos] == '(')
169: goto mod;
170:
171: /* Support only one-character font-names for now. */
172:
173: if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
1.35 ! schwarze 174: mandoc_msg(MANDOCERR_FT_BAD,
1.25 schwarze 175: ln, *pos, "TS %s", p + *pos - 1);
176: if (p[*pos] != '\0')
177: (*pos)++;
178: if (p[*pos] != '\0')
179: (*pos)++;
180: goto mod;
181: }
182:
183: switch (p[(*pos)++]) {
1.14 schwarze 184: case '3':
1.25 schwarze 185: case 'B':
1.1 schwarze 186: cp->flags |= TBL_CELL_BOLD;
1.4 schwarze 187: goto mod;
1.14 schwarze 188: case '2':
1.25 schwarze 189: case 'I':
1.1 schwarze 190: cp->flags |= TBL_CELL_ITALIC;
1.10 schwarze 191: goto mod;
1.14 schwarze 192: case '1':
1.25 schwarze 193: case 'R':
1.4 schwarze 194: goto mod;
1.1 schwarze 195: default:
1.35 ! schwarze 196: mandoc_msg(MANDOCERR_FT_BAD,
1.15 schwarze 197: ln, *pos - 1, "TS f%c", p[*pos - 1]);
198: goto mod;
1.1 schwarze 199: }
200: }
201:
1.19 schwarze 202: static void
1.14 schwarze 203: cell(struct tbl_node *tbl, struct tbl_row *rp,
1.4 schwarze 204: int ln, const char *p, int *pos)
1.1 schwarze 205: {
1.20 schwarze 206: int i;
1.1 schwarze 207: enum tbl_cellt c;
208:
1.20 schwarze 209: /* Handle leading vertical lines */
1.11 schwarze 210:
1.19 schwarze 211: while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
212: if (p[*pos] == '|') {
1.20 schwarze 213: if (rp->vert < 2)
214: rp->vert++;
1.19 schwarze 215: else
216: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
1.35 ! schwarze 217: ln, *pos, NULL);
1.19 schwarze 218: }
1.11 schwarze 219: (*pos)++;
1.19 schwarze 220: }
1.13 schwarze 221:
1.20 schwarze 222: again:
223: while (p[*pos] == ' ' || p[*pos] == '\t')
224: (*pos)++;
1.13 schwarze 225:
1.20 schwarze 226: if (p[*pos] == '.' || p[*pos] == '\0')
1.19 schwarze 227: return;
1.11 schwarze 228:
229: /* Parse the column position (`c', `l', `r', ...). */
1.1 schwarze 230:
1.4 schwarze 231: for (i = 0; i < KEYS_MAX; i++)
1.6 schwarze 232: if (tolower((unsigned char)p[*pos]) == keys[i].name)
1.4 schwarze 233: break;
234:
1.19 schwarze 235: if (i == KEYS_MAX) {
1.35 ! schwarze 236: mandoc_msg(MANDOCERR_TBLLAYOUT_CHAR,
1.19 schwarze 237: ln, *pos, "%c", p[*pos]);
238: (*pos)++;
239: goto again;
1.1 schwarze 240: }
1.6 schwarze 241: c = keys[i].key;
242:
1.19 schwarze 243: /* Special cases of spanners. */
1.7 schwarze 244:
1.19 schwarze 245: if (c == TBL_CELL_SPAN) {
246: if (rp->last == NULL)
1.35 ! schwarze 247: mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN, ln, *pos, NULL);
1.19 schwarze 248: else if (rp->last->pos == TBL_CELL_HORIZ ||
249: rp->last->pos == TBL_CELL_DHORIZ)
250: c = rp->last->pos;
251: } else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
1.35 ! schwarze 252: mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN, ln, *pos, NULL);
1.6 schwarze 253:
1.4 schwarze 254: (*pos)++;
1.1 schwarze 255:
256: /* Allocate cell then parse its modifiers. */
257:
1.20 schwarze 258: mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
1.1 schwarze 259: }
260:
1.18 schwarze 261: void
1.21 schwarze 262: tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1 schwarze 263: {
264: struct tbl_row *rp;
265:
1.17 schwarze 266: rp = NULL;
267: for (;;) {
268: /* Skip whitespace before and after each cell. */
1.4 schwarze 269:
1.19 schwarze 270: while (p[pos] == ' ' || p[pos] == '\t')
1.17 schwarze 271: pos++;
1.4 schwarze 272:
1.17 schwarze 273: switch (p[pos]) {
274: case ',': /* Next row on this input line. */
275: pos++;
276: rp = NULL;
277: continue;
278: case '\0': /* Next row on next input line. */
1.18 schwarze 279: return;
1.17 schwarze 280: case '.': /* End of layout. */
281: pos++;
282: tbl->part = TBL_PART_DATA;
1.20 schwarze 283:
284: /*
285: * When the layout is completely empty,
286: * default to one left-justified column.
287: */
288:
289: if (tbl->first_row == NULL) {
1.22 schwarze 290: tbl->first_row = tbl->last_row =
291: mandoc_calloc(1, sizeof(*rp));
292: }
293: if (tbl->first_row->first == NULL) {
1.20 schwarze 294: mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
1.35 ! schwarze 295: ln, pos, NULL);
1.22 schwarze 296: cell_alloc(tbl, tbl->first_row,
297: TBL_CELL_LEFT);
1.30 schwarze 298: if (tbl->opts.lvert < tbl->first_row->vert)
299: tbl->opts.lvert = tbl->first_row->vert;
1.18 schwarze 300: return;
1.20 schwarze 301: }
302:
303: /*
304: * Search for the widest line
305: * along the left and right margins.
306: */
307:
308: for (rp = tbl->first_row; rp; rp = rp->next) {
309: if (tbl->opts.lvert < rp->vert)
310: tbl->opts.lvert = rp->vert;
311: if (rp->last != NULL &&
1.24 schwarze 312: rp->last->col + 1 == tbl->opts.cols &&
1.20 schwarze 313: tbl->opts.rvert < rp->last->vert)
314: tbl->opts.rvert = rp->last->vert;
1.22 schwarze 315:
316: /* If the last line is empty, drop it. */
317:
318: if (rp->next != NULL &&
319: rp->next->first == NULL) {
320: free(rp->next);
321: rp->next = NULL;
1.26 schwarze 322: tbl->last_row = rp;
1.22 schwarze 323: }
1.20 schwarze 324: }
1.18 schwarze 325: return;
1.17 schwarze 326: default: /* Cell. */
327: break;
328: }
329:
1.22 schwarze 330: /*
331: * If the last line had at least one cell,
332: * start a new one; otherwise, continue it.
333: */
334:
335: if (rp == NULL) {
336: if (tbl->last_row == NULL ||
337: tbl->last_row->first != NULL) {
338: rp = mandoc_calloc(1, sizeof(*rp));
339: if (tbl->last_row)
340: tbl->last_row->next = rp;
341: else
342: tbl->first_row = rp;
343: tbl->last_row = rp;
344: } else
345: rp = tbl->last_row;
1.17 schwarze 346: }
1.19 schwarze 347: cell(tbl, rp, ln, p, &pos);
1.1 schwarze 348: }
349: }
1.4 schwarze 350:
351: static struct tbl_cell *
1.20 schwarze 352: cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
1.4 schwarze 353: {
354: struct tbl_cell *p, *pp;
355:
1.23 schwarze 356: p = mandoc_calloc(1, sizeof(*p));
1.31 schwarze 357: p->spacing = SIZE_MAX;
1.24 schwarze 358: p->pos = pos;
1.4 schwarze 359:
1.23 schwarze 360: if ((pp = rp->last) != NULL) {
1.11 schwarze 361: pp->next = p;
1.24 schwarze 362: p->col = pp->col + 1;
363: } else
1.11 schwarze 364: rp->first = p;
365: rp->last = p;
1.4 schwarze 366:
1.24 schwarze 367: if (tbl->opts.cols <= p->col)
368: tbl->opts.cols = p->col + 1;
1.4 schwarze 369:
1.27 schwarze 370: return p;
1.4 schwarze 371: }
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