Annotation of src/usr.bin/mandoc/tbl_layout.c, Revision 1.26
1.26 ! schwarze 1: /* $OpenBSD: tbl_layout.c,v 1.25 2015/02/10 11:02:19 schwarze Exp $ */
1.1 schwarze 2: /*
1.4 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.19 schwarze 4: * Copyright (c) 2012, 2014, 2015 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>
21: #include <stdlib.h>
22: #include <string.h>
1.4 schwarze 23: #include <time.h>
1.1 schwarze 24:
1.4 schwarze 25: #include "mandoc.h"
1.12 schwarze 26: #include "mandoc_aux.h"
1.4 schwarze 27: #include "libmandoc.h"
28: #include "libroff.h"
1.1 schwarze 29:
30: struct tbl_phrase {
31: char name;
32: enum tbl_cellt key;
33: };
34:
1.19 schwarze 35: static const struct tbl_phrase keys[] = {
1.1 schwarze 36: { 'c', TBL_CELL_CENTRE },
37: { 'r', TBL_CELL_RIGHT },
38: { 'l', TBL_CELL_LEFT },
39: { 'n', TBL_CELL_NUMBER },
40: { 's', TBL_CELL_SPAN },
41: { 'a', TBL_CELL_LONG },
42: { '^', TBL_CELL_DOWN },
43: { '-', TBL_CELL_HORIZ },
44: { '_', TBL_CELL_HORIZ },
1.11 schwarze 45: { '=', TBL_CELL_DHORIZ }
1.1 schwarze 46: };
47:
1.19 schwarze 48: #define KEYS_MAX ((int)(sizeof(keys)/sizeof(keys[0])))
49:
50: static void mods(struct tbl_node *, struct tbl_cell *,
1.4 schwarze 51: int, const char *, int *);
1.19 schwarze 52: static void cell(struct tbl_node *, struct tbl_row *,
1.1 schwarze 53: int, const char *, int *);
1.11 schwarze 54: static struct tbl_cell *cell_alloc(struct tbl_node *, struct tbl_row *,
1.20 schwarze 55: enum tbl_cellt);
1.1 schwarze 56:
1.14 schwarze 57:
1.19 schwarze 58: static void
1.14 schwarze 59: mods(struct tbl_node *tbl, struct tbl_cell *cp,
1.4 schwarze 60: int ln, const char *p, int *pos)
1.1 schwarze 61: {
1.19 schwarze 62: char *endptr;
1.1 schwarze 63:
1.19 schwarze 64: mod:
65: while (p[*pos] == ' ' || p[*pos] == '\t')
66: (*pos)++;
1.9 schwarze 67:
1.19 schwarze 68: /* Row delimiters and cell specifiers end modifier lists. */
1.9 schwarze 69:
1.20 schwarze 70: if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
1.19 schwarze 71: return;
1.1 schwarze 72:
1.6 schwarze 73: /* Throw away parenthesised expression. */
74:
75: if ('(' == p[*pos]) {
76: (*pos)++;
77: while (p[*pos] && ')' != p[*pos])
78: (*pos)++;
79: if (')' == p[*pos]) {
80: (*pos)++;
81: goto mod;
82: }
1.19 schwarze 83: mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, tbl->parse,
1.14 schwarze 84: ln, *pos, NULL);
1.19 schwarze 85: return;
1.6 schwarze 86: }
87:
1.1 schwarze 88: /* Parse numerical spacing from modifier string. */
89:
1.4 schwarze 90: if (isdigit((unsigned char)p[*pos])) {
1.19 schwarze 91: cp->spacing = strtoull(p + *pos, &endptr, 10);
92: *pos = endptr - p;
1.4 schwarze 93: goto mod;
1.14 schwarze 94: }
1.1 schwarze 95:
1.6 schwarze 96: switch (tolower((unsigned char)p[(*pos)++])) {
1.19 schwarze 97: case 'b':
1.25 schwarze 98: cp->flags |= TBL_CELL_BOLD;
99: goto mod;
1.19 schwarze 100: case 'd':
101: cp->flags |= TBL_CELL_BALIGN;
1.4 schwarze 102: goto mod;
1.14 schwarze 103: case 'e':
1.1 schwarze 104: cp->flags |= TBL_CELL_EQUAL;
1.4 schwarze 105: goto mod;
1.19 schwarze 106: case 'f':
107: break;
1.25 schwarze 108: case 'i':
109: cp->flags |= TBL_CELL_ITALIC;
110: goto mod;
1.19 schwarze 111: case 'm':
112: mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, tbl->parse,
113: ln, *pos, "m");
114: goto mod;
115: case 'p':
116: /* FALLTHROUGH */
117: case 'v':
118: if (p[*pos] == '-' || p[*pos] == '+')
119: (*pos)++;
120: while (isdigit((unsigned char)p[*pos]))
121: (*pos)++;
122: goto mod;
1.14 schwarze 123: case 't':
1.1 schwarze 124: cp->flags |= TBL_CELL_TALIGN;
1.4 schwarze 125: goto mod;
1.19 schwarze 126: case 'u':
127: cp->flags |= TBL_CELL_UP;
1.5 schwarze 128: goto mod;
1.14 schwarze 129: case 'w': /* XXX for now, ignore minimal column width */
1.16 schwarze 130: goto mod;
131: case 'x':
132: cp->flags |= TBL_CELL_WMAX;
1.4 schwarze 133: goto mod;
1.19 schwarze 134: case 'z':
135: cp->flags |= TBL_CELL_WIGN;
136: goto mod;
1.20 schwarze 137: case '|':
138: if (cp->vert < 2)
139: cp->vert++;
140: else
141: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
142: tbl->parse, ln, *pos - 1, NULL);
143: goto mod;
1.1 schwarze 144: default:
1.19 schwarze 145: mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
146: ln, *pos - 1, "%c", p[*pos - 1]);
147: goto mod;
1.1 schwarze 148: }
149:
1.25 schwarze 150: /* Ignore parenthised font names for now. */
151:
152: if (p[*pos] == '(')
153: goto mod;
154:
155: /* Support only one-character font-names for now. */
156:
157: if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
158: mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
159: ln, *pos, "TS %s", p + *pos - 1);
160: if (p[*pos] != '\0')
161: (*pos)++;
162: if (p[*pos] != '\0')
163: (*pos)++;
164: goto mod;
165: }
166:
167: switch (p[(*pos)++]) {
1.14 schwarze 168: case '3':
1.10 schwarze 169: /* FALLTHROUGH */
1.25 schwarze 170: case 'B':
1.1 schwarze 171: cp->flags |= TBL_CELL_BOLD;
1.4 schwarze 172: goto mod;
1.14 schwarze 173: case '2':
1.10 schwarze 174: /* FALLTHROUGH */
1.25 schwarze 175: case 'I':
1.1 schwarze 176: cp->flags |= TBL_CELL_ITALIC;
1.10 schwarze 177: goto mod;
1.14 schwarze 178: case '1':
1.10 schwarze 179: /* FALLTHROUGH */
1.25 schwarze 180: case 'R':
1.4 schwarze 181: goto mod;
1.1 schwarze 182: default:
1.15 schwarze 183: mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
184: ln, *pos - 1, "TS f%c", p[*pos - 1]);
185: goto mod;
1.1 schwarze 186: }
187: }
188:
1.19 schwarze 189: static void
1.14 schwarze 190: cell(struct tbl_node *tbl, struct tbl_row *rp,
1.4 schwarze 191: int ln, const char *p, int *pos)
1.1 schwarze 192: {
1.20 schwarze 193: int i;
1.1 schwarze 194: enum tbl_cellt c;
195:
1.20 schwarze 196: /* Handle leading vertical lines */
1.11 schwarze 197:
1.19 schwarze 198: while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
199: if (p[*pos] == '|') {
1.20 schwarze 200: if (rp->vert < 2)
201: rp->vert++;
1.19 schwarze 202: else
203: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
204: tbl->parse, ln, *pos, NULL);
205: }
1.11 schwarze 206: (*pos)++;
1.19 schwarze 207: }
1.13 schwarze 208:
1.20 schwarze 209: again:
210: while (p[*pos] == ' ' || p[*pos] == '\t')
211: (*pos)++;
1.13 schwarze 212:
1.20 schwarze 213: if (p[*pos] == '.' || p[*pos] == '\0')
1.19 schwarze 214: return;
1.11 schwarze 215:
216: /* Parse the column position (`c', `l', `r', ...). */
1.1 schwarze 217:
1.4 schwarze 218: for (i = 0; i < KEYS_MAX; i++)
1.6 schwarze 219: if (tolower((unsigned char)p[*pos]) == keys[i].name)
1.4 schwarze 220: break;
221:
1.19 schwarze 222: if (i == KEYS_MAX) {
223: mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
224: ln, *pos, "%c", p[*pos]);
225: (*pos)++;
226: goto again;
1.1 schwarze 227: }
1.6 schwarze 228: c = keys[i].key;
229:
1.19 schwarze 230: /* Special cases of spanners. */
1.7 schwarze 231:
1.19 schwarze 232: if (c == TBL_CELL_SPAN) {
233: if (rp->last == NULL)
234: mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN,
235: tbl->parse, ln, *pos, NULL);
236: else if (rp->last->pos == TBL_CELL_HORIZ ||
237: rp->last->pos == TBL_CELL_DHORIZ)
238: c = rp->last->pos;
239: } else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
240: mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN,
241: tbl->parse, ln, *pos, NULL);
1.6 schwarze 242:
1.4 schwarze 243: (*pos)++;
1.1 schwarze 244:
245: /* Allocate cell then parse its modifiers. */
246:
1.20 schwarze 247: mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
1.1 schwarze 248: }
249:
1.18 schwarze 250: void
1.21 schwarze 251: tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1 schwarze 252: {
253: struct tbl_row *rp;
254:
1.17 schwarze 255: rp = NULL;
256: for (;;) {
257: /* Skip whitespace before and after each cell. */
1.4 schwarze 258:
1.19 schwarze 259: while (p[pos] == ' ' || p[pos] == '\t')
1.17 schwarze 260: pos++;
1.4 schwarze 261:
1.17 schwarze 262: switch (p[pos]) {
263: case ',': /* Next row on this input line. */
264: pos++;
265: rp = NULL;
266: continue;
267: case '\0': /* Next row on next input line. */
1.18 schwarze 268: return;
1.17 schwarze 269: case '.': /* End of layout. */
270: pos++;
271: tbl->part = TBL_PART_DATA;
1.20 schwarze 272:
273: /*
274: * When the layout is completely empty,
275: * default to one left-justified column.
276: */
277:
278: if (tbl->first_row == NULL) {
1.22 schwarze 279: tbl->first_row = tbl->last_row =
280: mandoc_calloc(1, sizeof(*rp));
281: }
282: if (tbl->first_row->first == NULL) {
1.20 schwarze 283: mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
284: tbl->parse, ln, pos, NULL);
1.22 schwarze 285: cell_alloc(tbl, tbl->first_row,
286: TBL_CELL_LEFT);
1.18 schwarze 287: return;
1.20 schwarze 288: }
289:
290: /*
291: * Search for the widest line
292: * along the left and right margins.
293: */
294:
295: for (rp = tbl->first_row; rp; rp = rp->next) {
296: if (tbl->opts.lvert < rp->vert)
297: tbl->opts.lvert = rp->vert;
298: if (rp->last != NULL &&
1.24 schwarze 299: rp->last->col + 1 == tbl->opts.cols &&
1.20 schwarze 300: tbl->opts.rvert < rp->last->vert)
301: tbl->opts.rvert = rp->last->vert;
1.22 schwarze 302:
303: /* If the last line is empty, drop it. */
304:
305: if (rp->next != NULL &&
306: rp->next->first == NULL) {
307: free(rp->next);
308: rp->next = NULL;
1.26 ! schwarze 309: tbl->last_row = rp;
1.22 schwarze 310: }
1.20 schwarze 311: }
1.18 schwarze 312: return;
1.17 schwarze 313: default: /* Cell. */
314: break;
315: }
316:
1.22 schwarze 317: /*
318: * If the last line had at least one cell,
319: * start a new one; otherwise, continue it.
320: */
321:
322: if (rp == NULL) {
323: if (tbl->last_row == NULL ||
324: tbl->last_row->first != NULL) {
325: rp = mandoc_calloc(1, sizeof(*rp));
326: if (tbl->last_row)
327: tbl->last_row->next = rp;
328: else
329: tbl->first_row = rp;
330: tbl->last_row = rp;
331: } else
332: rp = tbl->last_row;
1.17 schwarze 333: }
1.19 schwarze 334: cell(tbl, rp, ln, p, &pos);
1.1 schwarze 335: }
336: }
1.4 schwarze 337:
338: static struct tbl_cell *
1.20 schwarze 339: cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
1.4 schwarze 340: {
341: struct tbl_cell *p, *pp;
342:
1.23 schwarze 343: p = mandoc_calloc(1, sizeof(*p));
1.24 schwarze 344: p->pos = pos;
1.4 schwarze 345:
1.23 schwarze 346: if ((pp = rp->last) != NULL) {
1.11 schwarze 347: pp->next = p;
1.24 schwarze 348: p->col = pp->col + 1;
349: } else
1.11 schwarze 350: rp->first = p;
351: rp->last = p;
1.4 schwarze 352:
1.24 schwarze 353: if (tbl->opts.cols <= p->col)
354: tbl->opts.cols = p->col + 1;
1.4 schwarze 355:
356: return(p);
357: }
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