Annotation of mandoc/tbl_data.c, Revision 1.49
1.49 ! schwarze 1: /* $Id: tbl_data.c,v 1.48 2018/12/12 21:54:35 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:
1.48 schwarze 28: #include "mandoc_aux.h"
1.1 kristaps 29: #include "mandoc.h"
1.48 schwarze 30: #include "tbl.h"
1.1 kristaps 31: #include "libmandoc.h"
1.49 ! schwarze 32: #include "tbl_int.h"
1.1 kristaps 33:
1.33 schwarze 34: static void getdata(struct tbl_node *, struct tbl_span *,
1.22 kristaps 35: int, const char *, int *);
1.30 schwarze 36: static struct tbl_span *newspan(struct tbl_node *, int,
1.22 kristaps 37: struct tbl_row *);
1.1 kristaps 38:
1.30 schwarze 39:
1.33 schwarze 40: static void
1.30 schwarze 41: getdata(struct tbl_node *tbl, struct tbl_span *dp,
1.1 kristaps 42: int ln, const char *p, int *pos)
43: {
1.46 schwarze 44: struct tbl_dat *dat, *pdat;
1.3 kristaps 45: struct tbl_cell *cp;
1.46 schwarze 46: struct tbl_span *pdp;
1.37 schwarze 47: int sv;
1.1 kristaps 48:
1.47 schwarze 49: /*
50: * Determine the length of the string in the cell
51: * and advance the parse point to the end of the cell.
52: */
53:
54: sv = *pos;
55: while (p[*pos] != '\0' && p[*pos] != tbl->opts.tab)
56: (*pos)++;
57:
1.38 schwarze 58: /* Advance to the next layout cell, skipping spanners. */
59:
1.37 schwarze 60: cp = dp->last == NULL ? dp->layout->first : dp->last->layout->next;
61: while (cp != NULL && cp->pos == TBL_CELL_SPAN)
1.3 kristaps 62: cp = cp->next;
63:
1.16 kristaps 64: /*
1.43 schwarze 65: * If the current layout row is out of cells, allocate
66: * a new cell if another row of the table has at least
67: * this number of columns, or discard the input if we
68: * are beyond the last column of the table as a whole.
1.16 kristaps 69: */
70:
1.37 schwarze 71: if (cp == NULL) {
1.43 schwarze 72: if (dp->layout->last->col + 1 < dp->opts->cols) {
73: cp = mandoc_calloc(1, sizeof(*cp));
74: cp->pos = TBL_CELL_LEFT;
75: dp->layout->last->next = cp;
76: cp->col = dp->layout->last->col + 1;
77: dp->layout->last = cp;
78: } else {
79: mandoc_msg(MANDOCERR_TBLDATA_EXTRA, tbl->parse,
1.47 schwarze 80: ln, sv, p + sv);
81: while (p[*pos] != '\0')
1.43 schwarze 82: (*pos)++;
83: return;
84: }
1.16 kristaps 85: }
86:
1.46 schwarze 87: dat = mandoc_malloc(sizeof(*dat));
1.3 kristaps 88: dat->layout = cp;
1.46 schwarze 89: dat->next = NULL;
90: dat->string = NULL;
91: dat->hspans = 0;
92: dat->vspans = 0;
93: dat->block = 0;
1.11 kristaps 94: dat->pos = TBL_DATA_NONE;
1.46 schwarze 95:
96: /*
97: * Increment the number of vertical spans in a data cell above,
98: * if this cell vertically extends one or more cells above.
99: * The iteration must be done over data rows,
100: * not over layout rows, because one layout row
101: * can be reused for more than one data row.
102: */
103:
1.47 schwarze 104: if (cp->pos == TBL_CELL_DOWN ||
105: (*pos - sv == 2 && p[sv] == '\\' && p[sv + 1] == '^')) {
1.46 schwarze 106: pdp = dp;
107: while ((pdp = pdp->prev) != NULL) {
108: pdat = pdp->first;
109: while (pdat != NULL &&
110: pdat->layout->col < dat->layout->col)
111: pdat = pdat->next;
112: if (pdat == NULL)
113: break;
1.47 schwarze 114: if (pdat->layout->pos != TBL_CELL_DOWN &&
115: strcmp(pdat->string, "\\^") != 0) {
1.46 schwarze 116: pdat->vspans++;
117: break;
118: }
119: }
120: }
121:
122: /*
123: * Count the number of horizontal spans to the right of this cell.
124: * This is purely a matter of the layout, independent of the data.
125: */
126:
1.37 schwarze 127: for (cp = cp->next; cp != NULL; cp = cp->next)
128: if (cp->pos == TBL_CELL_SPAN)
1.46 schwarze 129: dat->hspans++;
1.16 kristaps 130: else
131: break;
1.46 schwarze 132:
133: /* Append the new data cell to the data row. */
1.30 schwarze 134:
1.37 schwarze 135: if (dp->last == NULL)
136: dp->first = dat;
137: else
1.1 kristaps 138: dp->last->next = dat;
1.37 schwarze 139: dp->last = dat;
1.1 kristaps 140:
1.11 kristaps 141: /*
142: * Check for a continued-data scope opening. This consists of a
143: * trailing `T{' at the end of the line. Subsequent lines,
144: * until a standalone `T}', are included in our cell.
145: */
146:
1.37 schwarze 147: if (*pos - sv == 2 && p[sv] == 'T' && p[sv + 1] == '{') {
1.11 kristaps 148: tbl->part = TBL_PART_CDATA;
1.33 schwarze 149: return;
1.11 kristaps 150: }
151:
1.37 schwarze 152: dat->string = mandoc_strndup(p + sv, *pos - sv);
1.1 kristaps 153:
1.47 schwarze 154: if (p[*pos] != '\0')
1.1 kristaps 155: (*pos)++;
156:
157: if ( ! strcmp(dat->string, "_"))
1.5 kristaps 158: dat->pos = TBL_DATA_HORIZ;
1.1 kristaps 159: else if ( ! strcmp(dat->string, "="))
1.5 kristaps 160: dat->pos = TBL_DATA_DHORIZ;
1.1 kristaps 161: else if ( ! strcmp(dat->string, "\\_"))
1.5 kristaps 162: dat->pos = TBL_DATA_NHORIZ;
1.1 kristaps 163: else if ( ! strcmp(dat->string, "\\="))
1.5 kristaps 164: dat->pos = TBL_DATA_NDHORIZ;
165: else
166: dat->pos = TBL_DATA_DATA;
1.11 kristaps 167:
1.37 schwarze 168: if ((dat->layout->pos == TBL_CELL_HORIZ ||
169: dat->layout->pos == TBL_CELL_DHORIZ ||
170: dat->layout->pos == TBL_CELL_DOWN) &&
171: dat->pos == TBL_DATA_DATA && *dat->string != '\0')
172: mandoc_msg(MANDOCERR_TBLDATA_SPAN,
173: tbl->parse, ln, sv, dat->string);
1.11 kristaps 174: }
175:
1.45 schwarze 176: void
1.35 schwarze 177: tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
1.11 kristaps 178: {
179: struct tbl_dat *dat;
1.30 schwarze 180: size_t sz;
1.11 kristaps 181:
182: dat = tbl->last_span->last;
1.14 kristaps 183:
184: if (p[pos] == 'T' && p[pos + 1] == '}') {
185: pos += 2;
186: if (p[pos] == tbl->opts.tab) {
187: tbl->part = TBL_PART_DATA;
188: pos++;
1.40 schwarze 189: while (p[pos] != '\0')
190: getdata(tbl, tbl->last_span, ln, p, &pos);
1.45 schwarze 191: return;
1.37 schwarze 192: } else if (p[pos] == '\0') {
1.14 kristaps 193: tbl->part = TBL_PART_DATA;
1.45 schwarze 194: return;
1.14 kristaps 195: }
196:
197: /* Fallthrough: T} is part of a word. */
198: }
1.17 kristaps 199:
200: dat->pos = TBL_DATA_DATA;
1.42 schwarze 201: dat->block = 1;
1.11 kristaps 202:
1.37 schwarze 203: if (dat->string != NULL) {
1.36 schwarze 204: sz = strlen(p + pos) + strlen(dat->string) + 2;
1.11 kristaps 205: dat->string = mandoc_realloc(dat->string, sz);
1.31 schwarze 206: (void)strlcat(dat->string, " ", sz);
1.36 schwarze 207: (void)strlcat(dat->string, p + pos, sz);
1.11 kristaps 208: } else
1.36 schwarze 209: dat->string = mandoc_strdup(p + pos);
1.19 kristaps 210:
1.37 schwarze 211: if (dat->layout->pos == TBL_CELL_DOWN)
1.36 schwarze 212: mandoc_msg(MANDOCERR_TBLDATA_SPAN, tbl->parse,
213: ln, pos, dat->string);
1.1 kristaps 214: }
215:
1.20 schwarze 216: static struct tbl_span *
1.22 kristaps 217: newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
1.20 schwarze 218: {
219: struct tbl_span *dp;
220:
1.37 schwarze 221: dp = mandoc_calloc(1, sizeof(*dp));
1.22 kristaps 222: dp->line = line;
1.26 schwarze 223: dp->opts = &tbl->opts;
1.20 schwarze 224: dp->layout = rp;
1.34 schwarze 225: dp->prev = tbl->last_span;
1.20 schwarze 226:
1.34 schwarze 227: if (dp->prev == NULL) {
228: tbl->first_span = dp;
1.21 schwarze 229: tbl->current_span = NULL;
1.34 schwarze 230: } else
231: dp->prev->next = dp;
232: tbl->last_span = dp;
1.20 schwarze 233:
1.41 schwarze 234: return dp;
1.20 schwarze 235: }
236:
1.33 schwarze 237: void
1.35 schwarze 238: tbl_data(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1 kristaps 239: {
1.3 kristaps 240: struct tbl_row *rp;
1.43 schwarze 241: struct tbl_cell *cp;
1.44 schwarze 242: struct tbl_span *sp;
1.1 kristaps 243:
1.43 schwarze 244: rp = (sp = tbl->last_span) == NULL ? tbl->first_row :
245: sp->pos == TBL_SPAN_DATA && sp->layout->next != NULL ?
246: sp->layout->next : sp->layout;
1.18 kristaps 247:
1.43 schwarze 248: assert(rp != NULL);
1.3 kristaps 249:
1.1 kristaps 250: if ( ! strcmp(p, "_")) {
1.44 schwarze 251: sp = newspan(tbl, ln, rp);
1.43 schwarze 252: sp->pos = TBL_SPAN_HORIZ;
1.33 schwarze 253: return;
1.1 kristaps 254: } else if ( ! strcmp(p, "=")) {
1.44 schwarze 255: sp = newspan(tbl, ln, rp);
1.43 schwarze 256: sp->pos = TBL_SPAN_DHORIZ;
1.33 schwarze 257: return;
1.1 kristaps 258: }
1.43 schwarze 259:
260: /*
1.44 schwarze 261: * If the layout row contains nothing but horizontal lines,
262: * allocate an empty span for it and assign the current span
263: * to the next layout row accepting data.
1.43 schwarze 264: */
265:
1.44 schwarze 266: while (rp->next != NULL) {
267: if (rp->last->col + 1 < tbl->opts.cols)
268: break;
269: for (cp = rp->first; cp != NULL; cp = cp->next)
270: if (cp->pos != TBL_CELL_HORIZ &&
271: cp->pos != TBL_CELL_DHORIZ)
272: break;
273: if (cp != NULL)
274: break;
275: sp = newspan(tbl, ln, rp);
276: sp->pos = TBL_SPAN_DATA;
277: rp = rp->next;
1.43 schwarze 278: }
1.5 kristaps 279:
1.44 schwarze 280: /* Process a real data row. */
1.1 kristaps 281:
1.44 schwarze 282: sp = newspan(tbl, ln, rp);
283: sp->pos = TBL_SPAN_DATA;
284: while (p[pos] != '\0')
285: getdata(tbl, sp, ln, p, &pos);
1.1 kristaps 286: }
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