Annotation of mandoc/tbl_layout.c, Revision 1.41
1.41 ! schwarze 1: /* $Id: tbl_layout.c,v 1.40 2015/10/06 18:32:20 schwarze Exp $ */
1.1 kristaps 2: /*
1.22 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.32 schwarze 4: * Copyright (c) 2012, 2014, 2015 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>
23: #include <stdlib.h>
24: #include <string.h>
1.4 kristaps 25: #include <time.h>
1.1 kristaps 26:
27: #include "mandoc.h"
1.24 schwarze 28: #include "mandoc_aux.h"
1.1 kristaps 29: #include "libmandoc.h"
30: #include "libroff.h"
31:
32: struct tbl_phrase {
33: char name;
34: enum tbl_cellt key;
35: };
36:
1.32 schwarze 37: static const struct tbl_phrase keys[] = {
1.1 kristaps 38: { 'c', TBL_CELL_CENTRE },
39: { 'r', TBL_CELL_RIGHT },
40: { 'l', TBL_CELL_LEFT },
41: { 'n', TBL_CELL_NUMBER },
42: { 's', TBL_CELL_SPAN },
43: { 'a', TBL_CELL_LONG },
44: { '^', TBL_CELL_DOWN },
45: { '-', TBL_CELL_HORIZ },
46: { '_', TBL_CELL_HORIZ },
1.23 schwarze 47: { '=', TBL_CELL_DHORIZ }
1.1 kristaps 48: };
49:
1.32 schwarze 50: #define KEYS_MAX ((int)(sizeof(keys)/sizeof(keys[0])))
51:
52: static void mods(struct tbl_node *, struct tbl_cell *,
1.5 kristaps 53: int, const char *, int *);
1.32 schwarze 54: static void cell(struct tbl_node *, struct tbl_row *,
1.5 kristaps 55: int, const char *, int *);
1.23 schwarze 56: static struct tbl_cell *cell_alloc(struct tbl_node *, struct tbl_row *,
1.33 schwarze 57: enum tbl_cellt);
1.1 kristaps 58:
1.26 schwarze 59:
1.32 schwarze 60: static void
1.26 schwarze 61: mods(struct tbl_node *tbl, struct tbl_cell *cp,
1.1 kristaps 62: int ln, const char *p, int *pos)
63: {
1.32 schwarze 64: char *endptr;
1.20 kristaps 65:
1.32 schwarze 66: mod:
67: while (p[*pos] == ' ' || p[*pos] == '\t')
68: (*pos)++;
1.20 kristaps 69:
1.32 schwarze 70: /* Row delimiters and cell specifiers end modifier lists. */
1.1 kristaps 71:
1.33 schwarze 72: if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
1.32 schwarze 73: return;
1.12 kristaps 74:
75: /* Throw away parenthesised expression. */
76:
77: if ('(' == p[*pos]) {
78: (*pos)++;
79: while (p[*pos] && ')' != p[*pos])
80: (*pos)++;
81: if (')' == p[*pos]) {
82: (*pos)++;
83: goto mod;
84: }
1.32 schwarze 85: mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, tbl->parse,
1.26 schwarze 86: ln, *pos, NULL);
1.32 schwarze 87: return;
1.1 kristaps 88: }
89:
90: /* Parse numerical spacing from modifier string. */
91:
92: if (isdigit((unsigned char)p[*pos])) {
1.32 schwarze 93: cp->spacing = strtoull(p + *pos, &endptr, 10);
94: *pos = endptr - p;
1.1 kristaps 95: goto mod;
1.26 schwarze 96: }
1.1 kristaps 97:
1.13 joerg 98: switch (tolower((unsigned char)p[(*pos)++])) {
1.32 schwarze 99: case 'b':
1.38 schwarze 100: cp->flags |= TBL_CELL_BOLD;
101: goto mod;
1.32 schwarze 102: case 'd':
103: cp->flags |= TBL_CELL_BALIGN;
1.1 kristaps 104: goto mod;
1.26 schwarze 105: case 'e':
1.1 kristaps 106: cp->flags |= TBL_CELL_EQUAL;
107: goto mod;
1.32 schwarze 108: case 'f':
109: break;
1.38 schwarze 110: case 'i':
111: cp->flags |= TBL_CELL_ITALIC;
112: goto mod;
1.32 schwarze 113: case 'm':
114: mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, tbl->parse,
115: ln, *pos, "m");
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;
1.26 schwarze 124: case 't':
1.1 kristaps 125: cp->flags |= TBL_CELL_TALIGN;
126: goto mod;
1.32 schwarze 127: case 'u':
128: cp->flags |= TBL_CELL_UP;
1.10 schwarze 129: goto mod;
1.26 schwarze 130: case 'w': /* XXX for now, ignore minimal column width */
1.29 schwarze 131: goto mod;
132: case 'x':
133: cp->flags |= TBL_CELL_WMAX;
1.1 kristaps 134: goto mod;
1.32 schwarze 135: case 'z':
136: cp->flags |= TBL_CELL_WIGN;
137: goto mod;
1.33 schwarze 138: case '|':
139: if (cp->vert < 2)
140: cp->vert++;
141: else
142: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
143: tbl->parse, ln, *pos - 1, NULL);
144: goto mod;
1.1 kristaps 145: default:
1.32 schwarze 146: mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
147: ln, *pos - 1, "%c", p[*pos - 1]);
148: goto mod;
1.1 kristaps 149: }
150:
1.38 schwarze 151: /* Ignore parenthised font names for now. */
152:
153: if (p[*pos] == '(')
154: goto mod;
155:
156: /* Support only one-character font-names for now. */
157:
158: if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
159: mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
160: ln, *pos, "TS %s", p + *pos - 1);
161: if (p[*pos] != '\0')
162: (*pos)++;
163: if (p[*pos] != '\0')
164: (*pos)++;
165: goto mod;
166: }
167:
168: switch (p[(*pos)++]) {
1.26 schwarze 169: case '3':
1.38 schwarze 170: case 'B':
1.1 kristaps 171: cp->flags |= TBL_CELL_BOLD;
172: goto mod;
1.26 schwarze 173: case '2':
1.38 schwarze 174: case 'I':
1.1 kristaps 175: cp->flags |= TBL_CELL_ITALIC;
1.21 kristaps 176: goto mod;
1.26 schwarze 177: case '1':
1.38 schwarze 178: case 'R':
1.1 kristaps 179: goto mod;
180: default:
1.28 schwarze 181: mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
182: ln, *pos - 1, "TS f%c", p[*pos - 1]);
183: goto mod;
1.1 kristaps 184: }
185: }
186:
1.32 schwarze 187: static void
1.26 schwarze 188: cell(struct tbl_node *tbl, struct tbl_row *rp,
1.1 kristaps 189: int ln, const char *p, int *pos)
190: {
1.33 schwarze 191: int i;
1.1 kristaps 192: enum tbl_cellt c;
193:
1.33 schwarze 194: /* Handle leading vertical lines */
1.23 schwarze 195:
1.32 schwarze 196: while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
197: if (p[*pos] == '|') {
1.33 schwarze 198: if (rp->vert < 2)
199: rp->vert++;
1.32 schwarze 200: else
201: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
202: tbl->parse, ln, *pos, NULL);
203: }
1.23 schwarze 204: (*pos)++;
1.32 schwarze 205: }
1.25 schwarze 206:
1.33 schwarze 207: again:
208: while (p[*pos] == ' ' || p[*pos] == '\t')
209: (*pos)++;
1.25 schwarze 210:
1.33 schwarze 211: if (p[*pos] == '.' || p[*pos] == '\0')
1.32 schwarze 212: return;
1.23 schwarze 213:
214: /* Parse the column position (`c', `l', `r', ...). */
1.1 kristaps 215:
216: for (i = 0; i < KEYS_MAX; i++)
1.13 joerg 217: if (tolower((unsigned char)p[*pos]) == keys[i].name)
1.1 kristaps 218: break;
219:
1.32 schwarze 220: if (i == KEYS_MAX) {
221: mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
222: ln, *pos, "%c", p[*pos]);
223: (*pos)++;
224: goto again;
1.1 kristaps 225: }
1.11 kristaps 226: c = keys[i].key;
227:
1.32 schwarze 228: /* Special cases of spanners. */
1.16 kristaps 229:
1.32 schwarze 230: if (c == TBL_CELL_SPAN) {
231: if (rp->last == NULL)
232: mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN,
233: tbl->parse, ln, *pos, NULL);
234: else if (rp->last->pos == TBL_CELL_HORIZ ||
235: rp->last->pos == TBL_CELL_DHORIZ)
236: c = rp->last->pos;
237: } else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
238: mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN,
239: tbl->parse, ln, *pos, NULL);
1.11 kristaps 240:
1.1 kristaps 241: (*pos)++;
242:
243: /* Allocate cell then parse its modifiers. */
244:
1.33 schwarze 245: mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
1.1 kristaps 246: }
247:
1.31 schwarze 248: void
1.34 schwarze 249: tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1 kristaps 250: {
251: struct tbl_row *rp;
252:
1.30 schwarze 253: rp = NULL;
254: for (;;) {
255: /* Skip whitespace before and after each cell. */
1.1 kristaps 256:
1.32 schwarze 257: while (p[pos] == ' ' || p[pos] == '\t')
1.30 schwarze 258: pos++;
1.1 kristaps 259:
1.30 schwarze 260: switch (p[pos]) {
261: case ',': /* Next row on this input line. */
262: pos++;
263: rp = NULL;
264: continue;
265: case '\0': /* Next row on next input line. */
1.31 schwarze 266: return;
1.30 schwarze 267: case '.': /* End of layout. */
268: pos++;
269: tbl->part = TBL_PART_DATA;
1.33 schwarze 270:
271: /*
272: * When the layout is completely empty,
273: * default to one left-justified column.
274: */
275:
276: if (tbl->first_row == NULL) {
1.35 schwarze 277: tbl->first_row = tbl->last_row =
278: mandoc_calloc(1, sizeof(*rp));
279: }
280: if (tbl->first_row->first == NULL) {
1.33 schwarze 281: mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
282: tbl->parse, ln, pos, NULL);
1.35 schwarze 283: cell_alloc(tbl, tbl->first_row,
284: TBL_CELL_LEFT);
1.31 schwarze 285: return;
1.33 schwarze 286: }
287:
288: /*
289: * Search for the widest line
290: * along the left and right margins.
291: */
292:
293: for (rp = tbl->first_row; rp; rp = rp->next) {
294: if (tbl->opts.lvert < rp->vert)
295: tbl->opts.lvert = rp->vert;
296: if (rp->last != NULL &&
1.37 schwarze 297: rp->last->col + 1 == tbl->opts.cols &&
1.33 schwarze 298: tbl->opts.rvert < rp->last->vert)
299: tbl->opts.rvert = rp->last->vert;
1.35 schwarze 300:
301: /* If the last line is empty, drop it. */
302:
303: if (rp->next != NULL &&
304: rp->next->first == NULL) {
305: free(rp->next);
306: rp->next = NULL;
1.39 schwarze 307: tbl->last_row = rp;
1.35 schwarze 308: }
1.33 schwarze 309: }
1.31 schwarze 310: return;
1.30 schwarze 311: default: /* Cell. */
312: break;
313: }
314:
1.35 schwarze 315: /*
316: * If the last line had at least one cell,
317: * start a new one; otherwise, continue it.
318: */
319:
320: if (rp == NULL) {
321: if (tbl->last_row == NULL ||
322: tbl->last_row->first != NULL) {
323: rp = mandoc_calloc(1, sizeof(*rp));
324: if (tbl->last_row)
325: tbl->last_row->next = rp;
326: else
327: tbl->first_row = rp;
328: tbl->last_row = rp;
329: } else
330: rp = tbl->last_row;
1.30 schwarze 331: }
1.32 schwarze 332: cell(tbl, rp, ln, p, &pos);
1.1 kristaps 333: }
334: }
1.5 kristaps 335:
336: static struct tbl_cell *
1.33 schwarze 337: cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
1.5 kristaps 338: {
339: struct tbl_cell *p, *pp;
340:
1.36 schwarze 341: p = mandoc_calloc(1, sizeof(*p));
1.37 schwarze 342: p->pos = pos;
1.5 kristaps 343:
1.36 schwarze 344: if ((pp = rp->last) != NULL) {
1.23 schwarze 345: pp->next = p;
1.37 schwarze 346: p->col = pp->col + 1;
347: } else
1.23 schwarze 348: rp->first = p;
349: rp->last = p;
1.5 kristaps 350:
1.37 schwarze 351: if (tbl->opts.cols <= p->col)
352: tbl->opts.cols = p->col + 1;
1.5 kristaps 353:
1.40 schwarze 354: return p;
1.5 kristaps 355: }
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