Annotation of mandoc/tbl_layout.c, Revision 1.32
1.32 ! schwarze 1: /* $Id: tbl_layout.c,v 1.31 2015/01/14 22:44:55 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 *,
57: enum tbl_cellt, int vert);
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:
1.32 ! schwarze 72: if (strchr(".,-=^_ACLNRSaclnrs|", p[*pos]) != NULL)
! 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':
! 100: /* FALLTHROUGH */
! 101: case 'i':
! 102: /* FALLTHROUGH */
! 103: case 'r':
! 104: (*pos)--;
! 105: break;
! 106: case 'd':
! 107: cp->flags |= TBL_CELL_BALIGN;
1.1 kristaps 108: goto mod;
1.26 schwarze 109: case 'e':
1.1 kristaps 110: cp->flags |= TBL_CELL_EQUAL;
111: goto mod;
1.32 ! schwarze 112: case 'f':
! 113: break;
! 114: case 'm':
! 115: mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, tbl->parse,
! 116: ln, *pos, "m");
! 117: goto mod;
! 118: case 'p':
! 119: /* FALLTHROUGH */
! 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;
1.26 schwarze 132: case 'w': /* XXX for now, ignore minimal column width */
1.29 schwarze 133: goto mod;
134: case 'x':
135: cp->flags |= TBL_CELL_WMAX;
1.1 kristaps 136: goto mod;
1.32 ! schwarze 137: case 'z':
! 138: cp->flags |= TBL_CELL_WIGN;
! 139: goto mod;
1.1 kristaps 140: default:
1.32 ! schwarze 141: mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
! 142: ln, *pos - 1, "%c", p[*pos - 1]);
! 143: goto mod;
1.1 kristaps 144: }
145:
1.13 joerg 146: switch (tolower((unsigned char)p[(*pos)++])) {
1.26 schwarze 147: case '3':
1.21 kristaps 148: /* FALLTHROUGH */
1.26 schwarze 149: case 'b':
1.1 kristaps 150: cp->flags |= TBL_CELL_BOLD;
151: goto mod;
1.26 schwarze 152: case '2':
1.21 kristaps 153: /* FALLTHROUGH */
1.26 schwarze 154: case 'i':
1.1 kristaps 155: cp->flags |= TBL_CELL_ITALIC;
1.21 kristaps 156: goto mod;
1.26 schwarze 157: case '1':
1.21 kristaps 158: /* FALLTHROUGH */
1.26 schwarze 159: case 'r':
1.1 kristaps 160: goto mod;
161: default:
1.28 schwarze 162: mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
163: ln, *pos - 1, "TS f%c", p[*pos - 1]);
164: goto mod;
1.1 kristaps 165: }
166: }
167:
1.32 ! schwarze 168: static void
1.26 schwarze 169: cell(struct tbl_node *tbl, struct tbl_row *rp,
1.1 kristaps 170: int ln, const char *p, int *pos)
171: {
1.23 schwarze 172: int vert, i;
1.1 kristaps 173: enum tbl_cellt c;
174:
1.23 schwarze 175: /* Handle vertical lines. */
176:
1.32 ! schwarze 177: vert = 0;
! 178: again:
! 179: while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
! 180: if (p[*pos] == '|') {
! 181: if (vert < 2)
! 182: vert++;
! 183: else
! 184: mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
! 185: tbl->parse, ln, *pos, NULL);
! 186: }
1.23 schwarze 187: (*pos)++;
1.32 ! schwarze 188: }
1.25 schwarze 189:
190: /* Handle trailing vertical lines */
191:
192: if ('.' == p[*pos] || '\0' == p[*pos]) {
193: rp->vert = vert;
1.32 ! schwarze 194: return;
1.25 schwarze 195: }
1.23 schwarze 196:
197: /* Parse the column position (`c', `l', `r', ...). */
1.1 kristaps 198:
199: for (i = 0; i < KEYS_MAX; i++)
1.13 joerg 200: if (tolower((unsigned char)p[*pos]) == keys[i].name)
1.1 kristaps 201: break;
202:
1.32 ! schwarze 203: if (i == KEYS_MAX) {
! 204: mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
! 205: ln, *pos, "%c", p[*pos]);
! 206: (*pos)++;
! 207: goto again;
1.1 kristaps 208: }
1.11 kristaps 209: c = keys[i].key;
210:
1.32 ! schwarze 211: /* Special cases of spanners. */
1.16 kristaps 212:
1.32 ! schwarze 213: if (c == TBL_CELL_SPAN) {
! 214: if (rp->last == NULL)
! 215: mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN,
! 216: tbl->parse, ln, *pos, NULL);
! 217: else if (rp->last->pos == TBL_CELL_HORIZ ||
! 218: rp->last->pos == TBL_CELL_DHORIZ)
! 219: c = rp->last->pos;
! 220: } else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
! 221: mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN,
! 222: tbl->parse, ln, *pos, NULL);
1.11 kristaps 223:
1.1 kristaps 224: (*pos)++;
225:
226: /* Allocate cell then parse its modifiers. */
227:
1.32 ! schwarze 228: mods(tbl, cell_alloc(tbl, rp, c, vert), ln, p, pos);
1.1 kristaps 229: }
230:
1.31 schwarze 231: void
1.30 schwarze 232: tbl_layout(struct tbl_node *tbl, int ln, const char *p)
1.1 kristaps 233: {
234: struct tbl_row *rp;
1.30 schwarze 235: int pos;
1.1 kristaps 236:
1.30 schwarze 237: pos = 0;
238: rp = NULL;
1.1 kristaps 239:
1.30 schwarze 240: for (;;) {
241: /* Skip whitespace before and after each cell. */
1.1 kristaps 242:
1.32 ! schwarze 243: while (p[pos] == ' ' || p[pos] == '\t')
1.30 schwarze 244: pos++;
1.1 kristaps 245:
1.30 schwarze 246: switch (p[pos]) {
247: case ',': /* Next row on this input line. */
248: pos++;
249: rp = NULL;
250: continue;
251: case '\0': /* Next row on next input line. */
1.31 schwarze 252: return;
1.30 schwarze 253: case '.': /* End of layout. */
254: pos++;
255: tbl->part = TBL_PART_DATA;
256: if (tbl->first_row != NULL)
1.31 schwarze 257: return;
1.32 ! schwarze 258: mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
1.30 schwarze 259: tbl->parse, ln, pos, NULL);
260: rp = mandoc_calloc(1, sizeof(*rp));
261: cell_alloc(tbl, rp, TBL_CELL_LEFT, 0);
262: tbl->first_row = tbl->last_row = rp;
1.31 schwarze 263: return;
1.30 schwarze 264: default: /* Cell. */
265: break;
266: }
267:
268: if (rp == NULL) { /* First cell on this line. */
269: rp = mandoc_calloc(1, sizeof(*rp));
270: if (tbl->last_row)
271: tbl->last_row->next = rp;
272: else
273: tbl->first_row = rp;
274: tbl->last_row = rp;
275: }
1.32 ! schwarze 276: cell(tbl, rp, ln, p, &pos);
1.1 kristaps 277: }
278: }
1.5 kristaps 279:
280: static struct tbl_cell *
1.23 schwarze 281: cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos,
282: int vert)
1.5 kristaps 283: {
284: struct tbl_cell *p, *pp;
285: struct tbl_head *h, *hp;
286:
287: p = mandoc_calloc(1, sizeof(struct tbl_cell));
288:
289: if (NULL != (pp = rp->last)) {
1.23 schwarze 290: pp->next = p;
291: h = pp->head->next;
292: } else {
293: rp->first = p;
294: h = tbl->first_head;
295: }
296: rp->last = p;
1.5 kristaps 297:
298: p->pos = pos;
1.23 schwarze 299: p->vert = vert;
1.5 kristaps 300:
1.23 schwarze 301: /* Re-use header. */
1.5 kristaps 302:
303: if (h) {
1.23 schwarze 304: p->head = h;
305: return(p);
1.5 kristaps 306: }
307:
308: hp = mandoc_calloc(1, sizeof(struct tbl_head));
1.9 kristaps 309: hp->ident = tbl->opts.cols++;
1.23 schwarze 310: hp->vert = vert;
1.5 kristaps 311:
312: if (tbl->last_head) {
313: hp->prev = tbl->last_head;
314: tbl->last_head->next = hp;
315: } else
1.23 schwarze 316: tbl->first_head = hp;
317: tbl->last_head = hp;
1.5 kristaps 318:
319: p->head = hp;
320: return(p);
321: }
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