Annotation of mandoc/tbl_layout.c, Revision 1.48
1.48 ! schwarze 1: /* $Id: tbl_layout.c,v 1.47 2018/12/14 01:18:26 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;
1.42 schwarze 68: size_t sz;
1.20 kristaps 69:
1.32 schwarze 70: mod:
71: while (p[*pos] == ' ' || p[*pos] == '\t')
72: (*pos)++;
1.20 kristaps 73:
1.32 schwarze 74: /* Row delimiters and cell specifiers end modifier lists. */
1.1 kristaps 75:
1.33 schwarze 76: if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
1.32 schwarze 77: return;
1.12 kristaps 78:
79: /* Throw away parenthesised expression. */
80:
81: if ('(' == p[*pos]) {
82: (*pos)++;
83: while (p[*pos] && ')' != p[*pos])
84: (*pos)++;
85: if (')' == p[*pos]) {
86: (*pos)++;
87: goto mod;
88: }
1.48 ! schwarze 89: mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, ln, *pos, NULL);
1.32 schwarze 90: return;
1.1 kristaps 91: }
92:
93: /* Parse numerical spacing from modifier string. */
94:
95: if (isdigit((unsigned char)p[*pos])) {
1.32 schwarze 96: cp->spacing = strtoull(p + *pos, &endptr, 10);
97: *pos = endptr - p;
1.1 kristaps 98: goto mod;
1.26 schwarze 99: }
1.1 kristaps 100:
1.13 joerg 101: switch (tolower((unsigned char)p[(*pos)++])) {
1.32 schwarze 102: case 'b':
1.38 schwarze 103: cp->flags |= TBL_CELL_BOLD;
104: goto mod;
1.32 schwarze 105: case 'd':
106: cp->flags |= TBL_CELL_BALIGN;
1.1 kristaps 107: goto mod;
1.26 schwarze 108: case 'e':
1.1 kristaps 109: cp->flags |= TBL_CELL_EQUAL;
110: goto mod;
1.32 schwarze 111: case 'f':
112: break;
1.38 schwarze 113: case 'i':
114: cp->flags |= TBL_CELL_ITALIC;
115: goto mod;
1.32 schwarze 116: case 'm':
1.48 ! schwarze 117: mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, ln, *pos, "m");
1.32 schwarze 118: goto mod;
119: case 'p':
120: case 'v':
121: if (p[*pos] == '-' || p[*pos] == '+')
122: (*pos)++;
123: while (isdigit((unsigned char)p[*pos]))
124: (*pos)++;
125: goto mod;
1.26 schwarze 126: case 't':
1.1 kristaps 127: cp->flags |= TBL_CELL_TALIGN;
128: goto mod;
1.32 schwarze 129: case 'u':
130: cp->flags |= TBL_CELL_UP;
1.10 schwarze 131: goto mod;
1.42 schwarze 132: case 'w':
133: sz = 0;
134: if (p[*pos] == '(') {
135: (*pos)++;
136: while (p[*pos + sz] != '\0' && p[*pos + sz] != ')')
137: sz++;
138: } else
139: while (isdigit((unsigned char)p[*pos + sz]))
140: sz++;
141: if (sz) {
142: free(cp->wstr);
143: cp->wstr = mandoc_strndup(p + *pos, sz);
144: *pos += sz;
145: if (p[*pos] == ')')
146: (*pos)++;
147: }
1.29 schwarze 148: goto mod;
149: case 'x':
150: cp->flags |= TBL_CELL_WMAX;
1.1 kristaps 151: goto mod;
1.32 schwarze 152: case 'z':
153: cp->flags |= TBL_CELL_WIGN;
154: goto mod;
1.33 schwarze 155: case '|':
156: if (cp->vert < 2)
157: cp->vert++;
158: else
159: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
1.48 ! schwarze 160: ln, *pos - 1, NULL);
1.33 schwarze 161: goto mod;
1.1 kristaps 162: default:
1.48 ! schwarze 163: mandoc_msg(MANDOCERR_TBLLAYOUT_CHAR,
1.32 schwarze 164: ln, *pos - 1, "%c", p[*pos - 1]);
165: goto mod;
1.1 kristaps 166: }
167:
1.38 schwarze 168: /* Ignore parenthised font names for now. */
169:
170: if (p[*pos] == '(')
171: goto mod;
172:
173: /* Support only one-character font-names for now. */
174:
175: if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
1.48 ! schwarze 176: mandoc_msg(MANDOCERR_FT_BAD,
1.38 schwarze 177: ln, *pos, "TS %s", p + *pos - 1);
178: if (p[*pos] != '\0')
179: (*pos)++;
180: if (p[*pos] != '\0')
181: (*pos)++;
182: goto mod;
183: }
184:
185: switch (p[(*pos)++]) {
1.26 schwarze 186: case '3':
1.38 schwarze 187: case 'B':
1.1 kristaps 188: cp->flags |= TBL_CELL_BOLD;
189: goto mod;
1.26 schwarze 190: case '2':
1.38 schwarze 191: case 'I':
1.1 kristaps 192: cp->flags |= TBL_CELL_ITALIC;
1.21 kristaps 193: goto mod;
1.26 schwarze 194: case '1':
1.38 schwarze 195: case 'R':
1.1 kristaps 196: goto mod;
197: default:
1.48 ! schwarze 198: mandoc_msg(MANDOCERR_FT_BAD,
1.28 schwarze 199: ln, *pos - 1, "TS f%c", p[*pos - 1]);
200: goto mod;
1.1 kristaps 201: }
202: }
203:
1.32 schwarze 204: static void
1.26 schwarze 205: cell(struct tbl_node *tbl, struct tbl_row *rp,
1.1 kristaps 206: int ln, const char *p, int *pos)
207: {
1.33 schwarze 208: int i;
1.1 kristaps 209: enum tbl_cellt c;
210:
1.33 schwarze 211: /* Handle leading vertical lines */
1.23 schwarze 212:
1.32 schwarze 213: while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
214: if (p[*pos] == '|') {
1.33 schwarze 215: if (rp->vert < 2)
216: rp->vert++;
1.32 schwarze 217: else
218: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
1.48 ! schwarze 219: ln, *pos, NULL);
1.32 schwarze 220: }
1.23 schwarze 221: (*pos)++;
1.32 schwarze 222: }
1.25 schwarze 223:
1.33 schwarze 224: again:
225: while (p[*pos] == ' ' || p[*pos] == '\t')
226: (*pos)++;
1.25 schwarze 227:
1.33 schwarze 228: if (p[*pos] == '.' || p[*pos] == '\0')
1.32 schwarze 229: return;
1.23 schwarze 230:
231: /* Parse the column position (`c', `l', `r', ...). */
1.1 kristaps 232:
233: for (i = 0; i < KEYS_MAX; i++)
1.13 joerg 234: if (tolower((unsigned char)p[*pos]) == keys[i].name)
1.1 kristaps 235: break;
236:
1.32 schwarze 237: if (i == KEYS_MAX) {
1.48 ! schwarze 238: mandoc_msg(MANDOCERR_TBLLAYOUT_CHAR,
1.32 schwarze 239: ln, *pos, "%c", p[*pos]);
240: (*pos)++;
241: goto again;
1.1 kristaps 242: }
1.11 kristaps 243: c = keys[i].key;
244:
1.32 schwarze 245: /* Special cases of spanners. */
1.16 kristaps 246:
1.32 schwarze 247: if (c == TBL_CELL_SPAN) {
248: if (rp->last == NULL)
1.48 ! schwarze 249: mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN, ln, *pos, NULL);
1.32 schwarze 250: else if (rp->last->pos == TBL_CELL_HORIZ ||
251: rp->last->pos == TBL_CELL_DHORIZ)
252: c = rp->last->pos;
253: } else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
1.48 ! schwarze 254: mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN, ln, *pos, NULL);
1.11 kristaps 255:
1.1 kristaps 256: (*pos)++;
257:
258: /* Allocate cell then parse its modifiers. */
259:
1.33 schwarze 260: mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
1.1 kristaps 261: }
262:
1.31 schwarze 263: void
1.34 schwarze 264: tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1 kristaps 265: {
266: struct tbl_row *rp;
267:
1.30 schwarze 268: rp = NULL;
269: for (;;) {
270: /* Skip whitespace before and after each cell. */
1.1 kristaps 271:
1.32 schwarze 272: while (p[pos] == ' ' || p[pos] == '\t')
1.30 schwarze 273: pos++;
1.1 kristaps 274:
1.30 schwarze 275: switch (p[pos]) {
276: case ',': /* Next row on this input line. */
277: pos++;
278: rp = NULL;
279: continue;
280: case '\0': /* Next row on next input line. */
1.31 schwarze 281: return;
1.30 schwarze 282: case '.': /* End of layout. */
283: pos++;
284: tbl->part = TBL_PART_DATA;
1.33 schwarze 285:
286: /*
287: * When the layout is completely empty,
288: * default to one left-justified column.
289: */
290:
291: if (tbl->first_row == NULL) {
1.35 schwarze 292: tbl->first_row = tbl->last_row =
293: mandoc_calloc(1, sizeof(*rp));
294: }
295: if (tbl->first_row->first == NULL) {
1.33 schwarze 296: mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
1.48 ! schwarze 297: ln, pos, NULL);
1.35 schwarze 298: cell_alloc(tbl, tbl->first_row,
299: TBL_CELL_LEFT);
1.43 schwarze 300: if (tbl->opts.lvert < tbl->first_row->vert)
301: tbl->opts.lvert = tbl->first_row->vert;
1.31 schwarze 302: return;
1.33 schwarze 303: }
304:
305: /*
306: * Search for the widest line
307: * along the left and right margins.
308: */
309:
310: for (rp = tbl->first_row; rp; rp = rp->next) {
311: if (tbl->opts.lvert < rp->vert)
312: tbl->opts.lvert = rp->vert;
313: if (rp->last != NULL &&
1.37 schwarze 314: rp->last->col + 1 == tbl->opts.cols &&
1.33 schwarze 315: tbl->opts.rvert < rp->last->vert)
316: tbl->opts.rvert = rp->last->vert;
1.35 schwarze 317:
318: /* If the last line is empty, drop it. */
319:
320: if (rp->next != NULL &&
321: rp->next->first == NULL) {
322: free(rp->next);
323: rp->next = NULL;
1.39 schwarze 324: tbl->last_row = rp;
1.35 schwarze 325: }
1.33 schwarze 326: }
1.31 schwarze 327: return;
1.30 schwarze 328: default: /* Cell. */
329: break;
330: }
331:
1.35 schwarze 332: /*
333: * If the last line had at least one cell,
334: * start a new one; otherwise, continue it.
335: */
336:
337: if (rp == NULL) {
338: if (tbl->last_row == NULL ||
339: tbl->last_row->first != NULL) {
340: rp = mandoc_calloc(1, sizeof(*rp));
341: if (tbl->last_row)
342: tbl->last_row->next = rp;
343: else
344: tbl->first_row = rp;
345: tbl->last_row = rp;
346: } else
347: rp = tbl->last_row;
1.30 schwarze 348: }
1.32 schwarze 349: cell(tbl, rp, ln, p, &pos);
1.1 kristaps 350: }
351: }
1.5 kristaps 352:
353: static struct tbl_cell *
1.33 schwarze 354: cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
1.5 kristaps 355: {
356: struct tbl_cell *p, *pp;
357:
1.36 schwarze 358: p = mandoc_calloc(1, sizeof(*p));
1.44 schwarze 359: p->spacing = SIZE_MAX;
1.37 schwarze 360: p->pos = pos;
1.5 kristaps 361:
1.36 schwarze 362: if ((pp = rp->last) != NULL) {
1.23 schwarze 363: pp->next = p;
1.37 schwarze 364: p->col = pp->col + 1;
365: } else
1.23 schwarze 366: rp->first = p;
367: rp->last = p;
1.5 kristaps 368:
1.37 schwarze 369: if (tbl->opts.cols <= p->col)
370: tbl->opts.cols = p->col + 1;
1.5 kristaps 371:
1.40 schwarze 372: return p;
1.5 kristaps 373: }
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