Annotation of mandoc/tbl_data.c, Revision 1.46
1.46 ! schwarze 1: /* $Id: tbl_data.c,v 1.45 2017/07/08 17:52:50 schwarze Exp $ */
1.1 kristaps 2: /*
1.20 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.46 ! schwarze 4: * Copyright (c) 2011, 2015, 2017, 2018 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: {
1.46 ! schwarze 43: struct tbl_dat *dat, *pdat;
1.3 kristaps 44: struct tbl_cell *cp;
1.46 ! schwarze 45: struct tbl_span *pdp;
1.37 schwarze 46: int sv;
1.1 kristaps 47:
1.38 schwarze 48: /* Advance to the next layout cell, skipping spanners. */
49:
1.37 schwarze 50: cp = dp->last == NULL ? dp->layout->first : dp->last->layout->next;
51: while (cp != NULL && cp->pos == TBL_CELL_SPAN)
1.3 kristaps 52: cp = cp->next;
53:
1.16 kristaps 54: /*
1.43 schwarze 55: * If the current layout row is out of cells, allocate
56: * a new cell if another row of the table has at least
57: * this number of columns, or discard the input if we
58: * are beyond the last column of the table as a whole.
1.16 kristaps 59: */
60:
1.37 schwarze 61: if (cp == NULL) {
1.43 schwarze 62: if (dp->layout->last->col + 1 < dp->opts->cols) {
63: cp = mandoc_calloc(1, sizeof(*cp));
64: cp->pos = TBL_CELL_LEFT;
65: dp->layout->last->next = cp;
66: cp->col = dp->layout->last->col + 1;
67: dp->layout->last = cp;
68: } else {
69: mandoc_msg(MANDOCERR_TBLDATA_EXTRA, tbl->parse,
70: ln, *pos, p + *pos);
71: while (p[*pos])
72: (*pos)++;
73: return;
74: }
1.16 kristaps 75: }
76:
1.46 ! schwarze 77: dat = mandoc_malloc(sizeof(*dat));
1.3 kristaps 78: dat->layout = cp;
1.46 ! schwarze 79: dat->next = NULL;
! 80: dat->string = NULL;
! 81: dat->hspans = 0;
! 82: dat->vspans = 0;
! 83: dat->block = 0;
1.11 kristaps 84: dat->pos = TBL_DATA_NONE;
1.46 ! schwarze 85:
! 86: /*
! 87: * Increment the number of vertical spans in a data cell above,
! 88: * if this cell vertically extends one or more cells above.
! 89: * The iteration must be done over data rows,
! 90: * not over layout rows, because one layout row
! 91: * can be reused for more than one data row.
! 92: */
! 93:
! 94: if (cp->pos == TBL_CELL_DOWN) {
! 95: pdp = dp;
! 96: while ((pdp = pdp->prev) != NULL) {
! 97: pdat = pdp->first;
! 98: while (pdat != NULL &&
! 99: pdat->layout->col < dat->layout->col)
! 100: pdat = pdat->next;
! 101: if (pdat == NULL)
! 102: break;
! 103: if (pdat->layout->pos != TBL_CELL_DOWN) {
! 104: pdat->vspans++;
! 105: break;
! 106: }
! 107: }
! 108: }
! 109:
! 110: /*
! 111: * Count the number of horizontal spans to the right of this cell.
! 112: * This is purely a matter of the layout, independent of the data.
! 113: */
! 114:
1.37 schwarze 115: for (cp = cp->next; cp != NULL; cp = cp->next)
116: if (cp->pos == TBL_CELL_SPAN)
1.46 ! schwarze 117: dat->hspans++;
1.16 kristaps 118: else
119: break;
1.46 ! schwarze 120:
! 121: /* Append the new data cell to the data row. */
1.30 schwarze 122:
1.37 schwarze 123: if (dp->last == NULL)
124: dp->first = dat;
125: else
1.1 kristaps 126: dp->last->next = dat;
1.37 schwarze 127: dp->last = dat;
1.1 kristaps 128:
129: sv = *pos;
1.8 kristaps 130: while (p[*pos] && p[*pos] != tbl->opts.tab)
1.1 kristaps 131: (*pos)++;
132:
1.11 kristaps 133: /*
134: * Check for a continued-data scope opening. This consists of a
135: * trailing `T{' at the end of the line. Subsequent lines,
136: * until a standalone `T}', are included in our cell.
137: */
138:
1.37 schwarze 139: if (*pos - sv == 2 && p[sv] == 'T' && p[sv + 1] == '{') {
1.11 kristaps 140: tbl->part = TBL_PART_CDATA;
1.33 schwarze 141: return;
1.11 kristaps 142: }
143:
1.37 schwarze 144: dat->string = mandoc_strndup(p + sv, *pos - sv);
1.1 kristaps 145:
146: if (p[*pos])
147: (*pos)++;
148:
149: if ( ! strcmp(dat->string, "_"))
1.5 kristaps 150: dat->pos = TBL_DATA_HORIZ;
1.1 kristaps 151: else if ( ! strcmp(dat->string, "="))
1.5 kristaps 152: dat->pos = TBL_DATA_DHORIZ;
1.1 kristaps 153: else if ( ! strcmp(dat->string, "\\_"))
1.5 kristaps 154: dat->pos = TBL_DATA_NHORIZ;
1.1 kristaps 155: else if ( ! strcmp(dat->string, "\\="))
1.5 kristaps 156: dat->pos = TBL_DATA_NDHORIZ;
157: else
158: dat->pos = TBL_DATA_DATA;
1.11 kristaps 159:
1.37 schwarze 160: if ((dat->layout->pos == TBL_CELL_HORIZ ||
161: dat->layout->pos == TBL_CELL_DHORIZ ||
162: dat->layout->pos == TBL_CELL_DOWN) &&
163: dat->pos == TBL_DATA_DATA && *dat->string != '\0')
164: mandoc_msg(MANDOCERR_TBLDATA_SPAN,
165: tbl->parse, ln, sv, dat->string);
1.11 kristaps 166: }
167:
1.45 schwarze 168: void
1.35 schwarze 169: tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
1.11 kristaps 170: {
171: struct tbl_dat *dat;
1.30 schwarze 172: size_t sz;
1.11 kristaps 173:
174: dat = tbl->last_span->last;
1.14 kristaps 175:
176: if (p[pos] == 'T' && p[pos + 1] == '}') {
177: pos += 2;
178: if (p[pos] == tbl->opts.tab) {
179: tbl->part = TBL_PART_DATA;
180: pos++;
1.40 schwarze 181: while (p[pos] != '\0')
182: getdata(tbl, tbl->last_span, ln, p, &pos);
1.45 schwarze 183: return;
1.37 schwarze 184: } else if (p[pos] == '\0') {
1.14 kristaps 185: tbl->part = TBL_PART_DATA;
1.45 schwarze 186: return;
1.14 kristaps 187: }
188:
189: /* Fallthrough: T} is part of a word. */
190: }
1.17 kristaps 191:
192: dat->pos = TBL_DATA_DATA;
1.42 schwarze 193: dat->block = 1;
1.11 kristaps 194:
1.37 schwarze 195: if (dat->string != NULL) {
1.36 schwarze 196: sz = strlen(p + pos) + strlen(dat->string) + 2;
1.11 kristaps 197: dat->string = mandoc_realloc(dat->string, sz);
1.31 schwarze 198: (void)strlcat(dat->string, " ", sz);
1.36 schwarze 199: (void)strlcat(dat->string, p + pos, sz);
1.11 kristaps 200: } else
1.36 schwarze 201: dat->string = mandoc_strdup(p + pos);
1.19 kristaps 202:
1.37 schwarze 203: if (dat->layout->pos == TBL_CELL_DOWN)
1.36 schwarze 204: mandoc_msg(MANDOCERR_TBLDATA_SPAN, tbl->parse,
205: ln, pos, dat->string);
1.1 kristaps 206: }
207:
1.20 schwarze 208: static struct tbl_span *
1.22 kristaps 209: newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
1.20 schwarze 210: {
211: struct tbl_span *dp;
212:
1.37 schwarze 213: dp = mandoc_calloc(1, sizeof(*dp));
1.22 kristaps 214: dp->line = line;
1.26 schwarze 215: dp->opts = &tbl->opts;
1.20 schwarze 216: dp->layout = rp;
1.34 schwarze 217: dp->prev = tbl->last_span;
1.20 schwarze 218:
1.34 schwarze 219: if (dp->prev == NULL) {
220: tbl->first_span = dp;
1.21 schwarze 221: tbl->current_span = NULL;
1.34 schwarze 222: } else
223: dp->prev->next = dp;
224: tbl->last_span = dp;
1.20 schwarze 225:
1.41 schwarze 226: return dp;
1.20 schwarze 227: }
228:
1.33 schwarze 229: void
1.35 schwarze 230: tbl_data(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1 kristaps 231: {
1.3 kristaps 232: struct tbl_row *rp;
1.43 schwarze 233: struct tbl_cell *cp;
1.44 schwarze 234: struct tbl_span *sp;
1.1 kristaps 235:
1.43 schwarze 236: rp = (sp = tbl->last_span) == NULL ? tbl->first_row :
237: sp->pos == TBL_SPAN_DATA && sp->layout->next != NULL ?
238: sp->layout->next : sp->layout;
1.18 kristaps 239:
1.43 schwarze 240: assert(rp != NULL);
1.3 kristaps 241:
1.1 kristaps 242: if ( ! strcmp(p, "_")) {
1.44 schwarze 243: sp = newspan(tbl, ln, rp);
1.43 schwarze 244: sp->pos = TBL_SPAN_HORIZ;
1.33 schwarze 245: return;
1.1 kristaps 246: } else if ( ! strcmp(p, "=")) {
1.44 schwarze 247: sp = newspan(tbl, ln, rp);
1.43 schwarze 248: sp->pos = TBL_SPAN_DHORIZ;
1.33 schwarze 249: return;
1.1 kristaps 250: }
1.43 schwarze 251:
252: /*
1.44 schwarze 253: * If the layout row contains nothing but horizontal lines,
254: * allocate an empty span for it and assign the current span
255: * to the next layout row accepting data.
1.43 schwarze 256: */
257:
1.44 schwarze 258: while (rp->next != NULL) {
259: if (rp->last->col + 1 < tbl->opts.cols)
260: break;
261: for (cp = rp->first; cp != NULL; cp = cp->next)
262: if (cp->pos != TBL_CELL_HORIZ &&
263: cp->pos != TBL_CELL_DHORIZ)
264: break;
265: if (cp != NULL)
266: break;
267: sp = newspan(tbl, ln, rp);
268: sp->pos = TBL_SPAN_DATA;
269: rp = rp->next;
1.43 schwarze 270: }
1.5 kristaps 271:
1.44 schwarze 272: /* Process a real data row. */
1.1 kristaps 273:
1.44 schwarze 274: sp = newspan(tbl, ln, rp);
275: sp->pos = TBL_SPAN_DATA;
276: while (p[pos] != '\0')
277: getdata(tbl, sp, ln, p, &pos);
1.1 kristaps 278: }
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