Annotation of mandoc/tbl_data.c, Revision 1.43
1.43 ! schwarze 1: /* $Id: tbl_data.c,v 1.42 2017/06/08 18:11:22 schwarze Exp $ */
1.1 kristaps 2: /*
1.20 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.42 schwarze 4: * Copyright (c) 2011, 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: */
1.11 kristaps 18: #include "config.h"
1.32 schwarze 19:
20: #include <sys/types.h>
1.11 kristaps 21:
1.1 kristaps 22: #include <assert.h>
23: #include <ctype.h>
24: #include <stdlib.h>
25: #include <string.h>
1.6 kristaps 26: #include <time.h>
1.1 kristaps 27:
28: #include "mandoc.h"
1.29 schwarze 29: #include "mandoc_aux.h"
1.1 kristaps 30: #include "libmandoc.h"
31: #include "libroff.h"
32:
1.33 schwarze 33: static void getdata(struct tbl_node *, struct tbl_span *,
1.22 kristaps 34: int, const char *, int *);
1.30 schwarze 35: static struct tbl_span *newspan(struct tbl_node *, int,
1.22 kristaps 36: struct tbl_row *);
1.1 kristaps 37:
1.30 schwarze 38:
1.33 schwarze 39: static void
1.30 schwarze 40: getdata(struct tbl_node *tbl, struct tbl_span *dp,
1.1 kristaps 41: int ln, const char *p, int *pos)
42: {
43: struct tbl_dat *dat;
1.3 kristaps 44: struct tbl_cell *cp;
1.37 schwarze 45: int sv;
1.1 kristaps 46:
1.38 schwarze 47: /* Advance to the next layout cell, skipping spanners. */
48:
1.37 schwarze 49: cp = dp->last == NULL ? dp->layout->first : dp->last->layout->next;
50: while (cp != NULL && cp->pos == TBL_CELL_SPAN)
1.3 kristaps 51: cp = cp->next;
52:
1.16 kristaps 53: /*
1.43 ! schwarze 54: * If the current layout row is out of cells, allocate
! 55: * a new cell if another row of the table has at least
! 56: * this number of columns, or discard the input if we
! 57: * are beyond the last column of the table as a whole.
1.16 kristaps 58: */
59:
1.37 schwarze 60: if (cp == NULL) {
1.43 ! schwarze 61: if (dp->layout->last->col + 1 < dp->opts->cols) {
! 62: cp = mandoc_calloc(1, sizeof(*cp));
! 63: cp->pos = TBL_CELL_LEFT;
! 64: dp->layout->last->next = cp;
! 65: cp->col = dp->layout->last->col + 1;
! 66: dp->layout->last = cp;
! 67: } else {
! 68: mandoc_msg(MANDOCERR_TBLDATA_EXTRA, tbl->parse,
! 69: ln, *pos, p + *pos);
! 70: while (p[*pos])
! 71: (*pos)++;
! 72: return;
! 73: }
1.16 kristaps 74: }
75:
1.37 schwarze 76: dat = mandoc_calloc(1, sizeof(*dat));
1.3 kristaps 77: dat->layout = cp;
1.11 kristaps 78: dat->pos = TBL_DATA_NONE;
1.37 schwarze 79: dat->spans = 0;
80: for (cp = cp->next; cp != NULL; cp = cp->next)
81: if (cp->pos == TBL_CELL_SPAN)
82: dat->spans++;
1.16 kristaps 83: else
84: break;
1.30 schwarze 85:
1.37 schwarze 86: if (dp->last == NULL)
87: dp->first = dat;
88: else
1.1 kristaps 89: dp->last->next = dat;
1.37 schwarze 90: dp->last = dat;
1.1 kristaps 91:
92: sv = *pos;
1.8 kristaps 93: while (p[*pos] && p[*pos] != tbl->opts.tab)
1.1 kristaps 94: (*pos)++;
95:
1.11 kristaps 96: /*
97: * Check for a continued-data scope opening. This consists of a
98: * trailing `T{' at the end of the line. Subsequent lines,
99: * until a standalone `T}', are included in our cell.
100: */
101:
1.37 schwarze 102: if (*pos - sv == 2 && p[sv] == 'T' && p[sv + 1] == '{') {
1.11 kristaps 103: tbl->part = TBL_PART_CDATA;
1.33 schwarze 104: return;
1.11 kristaps 105: }
106:
1.37 schwarze 107: dat->string = mandoc_strndup(p + sv, *pos - sv);
1.1 kristaps 108:
109: if (p[*pos])
110: (*pos)++;
111:
112: if ( ! strcmp(dat->string, "_"))
1.5 kristaps 113: dat->pos = TBL_DATA_HORIZ;
1.1 kristaps 114: else if ( ! strcmp(dat->string, "="))
1.5 kristaps 115: dat->pos = TBL_DATA_DHORIZ;
1.1 kristaps 116: else if ( ! strcmp(dat->string, "\\_"))
1.5 kristaps 117: dat->pos = TBL_DATA_NHORIZ;
1.1 kristaps 118: else if ( ! strcmp(dat->string, "\\="))
1.5 kristaps 119: dat->pos = TBL_DATA_NDHORIZ;
120: else
121: dat->pos = TBL_DATA_DATA;
1.11 kristaps 122:
1.37 schwarze 123: if ((dat->layout->pos == TBL_CELL_HORIZ ||
124: dat->layout->pos == TBL_CELL_DHORIZ ||
125: dat->layout->pos == TBL_CELL_DOWN) &&
126: dat->pos == TBL_DATA_DATA && *dat->string != '\0')
127: mandoc_msg(MANDOCERR_TBLDATA_SPAN,
128: tbl->parse, ln, sv, dat->string);
1.11 kristaps 129: }
130:
131: int
1.35 schwarze 132: tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
1.11 kristaps 133: {
134: struct tbl_dat *dat;
1.30 schwarze 135: size_t sz;
1.11 kristaps 136:
137: dat = tbl->last_span->last;
1.14 kristaps 138:
139: if (p[pos] == 'T' && p[pos + 1] == '}') {
140: pos += 2;
141: if (p[pos] == tbl->opts.tab) {
142: tbl->part = TBL_PART_DATA;
143: pos++;
1.40 schwarze 144: while (p[pos] != '\0')
145: getdata(tbl, tbl->last_span, ln, p, &pos);
1.41 schwarze 146: return 1;
1.37 schwarze 147: } else if (p[pos] == '\0') {
1.14 kristaps 148: tbl->part = TBL_PART_DATA;
1.41 schwarze 149: return 1;
1.14 kristaps 150: }
151:
152: /* Fallthrough: T} is part of a word. */
153: }
1.17 kristaps 154:
155: dat->pos = TBL_DATA_DATA;
1.42 schwarze 156: dat->block = 1;
1.11 kristaps 157:
1.37 schwarze 158: if (dat->string != NULL) {
1.36 schwarze 159: sz = strlen(p + pos) + strlen(dat->string) + 2;
1.11 kristaps 160: dat->string = mandoc_realloc(dat->string, sz);
1.31 schwarze 161: (void)strlcat(dat->string, " ", sz);
1.36 schwarze 162: (void)strlcat(dat->string, p + pos, sz);
1.11 kristaps 163: } else
1.36 schwarze 164: dat->string = mandoc_strdup(p + pos);
1.19 kristaps 165:
1.37 schwarze 166: if (dat->layout->pos == TBL_CELL_DOWN)
1.36 schwarze 167: mandoc_msg(MANDOCERR_TBLDATA_SPAN, tbl->parse,
168: ln, pos, dat->string);
1.11 kristaps 169:
1.41 schwarze 170: return 0;
1.1 kristaps 171: }
172:
1.20 schwarze 173: static struct tbl_span *
1.22 kristaps 174: newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
1.20 schwarze 175: {
176: struct tbl_span *dp;
177:
1.37 schwarze 178: dp = mandoc_calloc(1, sizeof(*dp));
1.22 kristaps 179: dp->line = line;
1.26 schwarze 180: dp->opts = &tbl->opts;
1.20 schwarze 181: dp->layout = rp;
1.34 schwarze 182: dp->prev = tbl->last_span;
1.20 schwarze 183:
1.34 schwarze 184: if (dp->prev == NULL) {
185: tbl->first_span = dp;
1.21 schwarze 186: tbl->current_span = NULL;
1.34 schwarze 187: } else
188: dp->prev->next = dp;
189: tbl->last_span = dp;
1.20 schwarze 190:
1.41 schwarze 191: return dp;
1.20 schwarze 192: }
193:
1.33 schwarze 194: void
1.35 schwarze 195: tbl_data(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1 kristaps 196: {
1.3 kristaps 197: struct tbl_row *rp;
1.43 ! schwarze 198: struct tbl_cell *cp;
! 199: struct tbl_span *sp, *spi;
! 200: struct tbl_dat *dp;
! 201: int have_data, spans;
1.1 kristaps 202:
1.43 ! schwarze 203: rp = (sp = tbl->last_span) == NULL ? tbl->first_row :
! 204: sp->pos == TBL_SPAN_DATA && sp->layout->next != NULL ?
! 205: sp->layout->next : sp->layout;
1.18 kristaps 206:
1.43 ! schwarze 207: assert(rp != NULL);
1.3 kristaps 208:
1.43 ! schwarze 209: sp = newspan(tbl, ln, rp);
1.2 kristaps 210:
1.1 kristaps 211: if ( ! strcmp(p, "_")) {
1.43 ! schwarze 212: sp->pos = TBL_SPAN_HORIZ;
1.33 schwarze 213: return;
1.1 kristaps 214: } else if ( ! strcmp(p, "=")) {
1.43 ! schwarze 215: sp->pos = TBL_SPAN_DHORIZ;
1.33 schwarze 216: return;
1.1 kristaps 217: }
1.43 ! schwarze 218: sp->pos = TBL_SPAN_DATA;
! 219:
! 220: while (p[pos] != '\0')
! 221: getdata(tbl, sp, ln, p, &pos);
! 222:
! 223: /*
! 224: * If this span contains some data,
! 225: * make sure at least part of it gets printed.
! 226: */
! 227:
! 228: have_data = 0;
! 229: cp = rp->first;
! 230: for (dp = sp->first; dp != NULL; dp = dp->next) {
! 231: if (dp->pos == TBL_DATA_DATA && *dp->string != '\0') {
! 232: if (cp == NULL ||
! 233: (cp->pos != TBL_CELL_HORIZ &&
! 234: cp->pos != TBL_CELL_DHORIZ))
! 235: return;
! 236: have_data = 1;
! 237: }
! 238: spans = dp->spans;
! 239: while (spans-- >= 0) {
! 240: if (cp != NULL)
! 241: cp = cp->next;
! 242: }
! 243: }
! 244: if (have_data == 0 || rp->next == NULL)
! 245: return;
1.5 kristaps 246:
1.43 ! schwarze 247: /*
! 248: * There is some data, but it would all get lost
! 249: * due to horizontal lines in the layout.
! 250: * Insert an empty span to consume the layout row.
! 251: */
1.1 kristaps 252:
1.43 ! schwarze 253: tbl->last_span = sp->prev;
! 254: spi = newspan(tbl, ln, rp);
! 255: spi->pos = TBL_SPAN_DATA;
! 256: spi->next = sp;
! 257: tbl->last_span = sp;
! 258: sp->prev = spi;
! 259: sp->layout = rp->next;
! 260: cp = sp->layout->first;
! 261: for (dp = sp->first; dp != NULL; dp = dp->next) {
! 262: dp->layout = cp;
! 263: dp->spans = 0;
! 264: if (cp != NULL)
! 265: cp = cp->next;
! 266: while (cp != NULL && cp->pos == TBL_CELL_SPAN) {
! 267: dp->spans++;
! 268: cp = cp->next;
! 269: }
! 270: }
1.1 kristaps 271: }
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