Annotation of src/usr.bin/mandoc/tbl_data.c, Revision 1.34
1.34 ! schwarze 1: /* $OpenBSD: tbl_data.c,v 1.33 2018/11/25 19:23:59 schwarze Exp $ */
1.1 schwarze 2: /*
1.4 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.33 schwarze 4: * Copyright (c) 2011, 2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 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: */
1.19 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
21: #include <ctype.h>
22: #include <stdlib.h>
23: #include <string.h>
1.4 schwarze 24: #include <time.h>
1.1 schwarze 25:
1.4 schwarze 26: #include "mandoc.h"
1.16 schwarze 27: #include "mandoc_aux.h"
1.4 schwarze 28: #include "libmandoc.h"
29: #include "libroff.h"
30:
1.20 schwarze 31: static void getdata(struct tbl_node *, struct tbl_span *,
1.9 schwarze 32: int, const char *, int *);
1.17 schwarze 33: static struct tbl_span *newspan(struct tbl_node *, int,
1.9 schwarze 34: struct tbl_row *);
1.4 schwarze 35:
1.17 schwarze 36:
1.20 schwarze 37: static void
1.17 schwarze 38: getdata(struct tbl_node *tbl, struct tbl_span *dp,
1.4 schwarze 39: int ln, const char *p, int *pos)
1.1 schwarze 40: {
1.33 schwarze 41: struct tbl_dat *dat, *pdat;
1.4 schwarze 42: struct tbl_cell *cp;
1.33 schwarze 43: struct tbl_span *pdp;
1.24 schwarze 44: int sv;
1.4 schwarze 45:
1.34 ! schwarze 46: /*
! 47: * Determine the length of the string in the cell
! 48: * and advance the parse point to the end of the cell.
! 49: */
! 50:
! 51: sv = *pos;
! 52: while (p[*pos] != '\0' && p[*pos] != tbl->opts.tab)
! 53: (*pos)++;
! 54:
1.25 schwarze 55: /* Advance to the next layout cell, skipping spanners. */
56:
1.24 schwarze 57: cp = dp->last == NULL ? dp->layout->first : dp->last->layout->next;
58: while (cp != NULL && cp->pos == TBL_CELL_SPAN)
1.4 schwarze 59: cp = cp->next;
60:
1.6 schwarze 61: /*
1.30 schwarze 62: * If the current layout row is out of cells, allocate
63: * a new cell if another row of the table has at least
64: * this number of columns, or discard the input if we
65: * are beyond the last column of the table as a whole.
1.6 schwarze 66: */
67:
1.24 schwarze 68: if (cp == NULL) {
1.30 schwarze 69: if (dp->layout->last->col + 1 < dp->opts->cols) {
70: cp = mandoc_calloc(1, sizeof(*cp));
71: cp->pos = TBL_CELL_LEFT;
72: dp->layout->last->next = cp;
73: cp->col = dp->layout->last->col + 1;
74: dp->layout->last = cp;
75: } else {
76: mandoc_msg(MANDOCERR_TBLDATA_EXTRA, tbl->parse,
1.34 ! schwarze 77: ln, sv, p + sv);
! 78: while (p[*pos] != '\0')
1.30 schwarze 79: (*pos)++;
80: return;
81: }
1.6 schwarze 82: }
83:
1.33 schwarze 84: dat = mandoc_malloc(sizeof(*dat));
1.4 schwarze 85: dat->layout = cp;
1.33 schwarze 86: dat->next = NULL;
87: dat->string = NULL;
88: dat->hspans = 0;
89: dat->vspans = 0;
90: dat->block = 0;
1.4 schwarze 91: dat->pos = TBL_DATA_NONE;
1.33 schwarze 92:
93: /*
94: * Increment the number of vertical spans in a data cell above,
95: * if this cell vertically extends one or more cells above.
96: * The iteration must be done over data rows,
97: * not over layout rows, because one layout row
98: * can be reused for more than one data row.
99: */
100:
1.34 ! schwarze 101: if (cp->pos == TBL_CELL_DOWN ||
! 102: (*pos - sv == 2 && p[sv] == '\\' && p[sv + 1] == '^')) {
1.33 schwarze 103: pdp = dp;
104: while ((pdp = pdp->prev) != NULL) {
105: pdat = pdp->first;
106: while (pdat != NULL &&
107: pdat->layout->col < dat->layout->col)
108: pdat = pdat->next;
109: if (pdat == NULL)
110: break;
1.34 ! schwarze 111: if (pdat->layout->pos != TBL_CELL_DOWN &&
! 112: strcmp(pdat->string, "\\^") != 0) {
1.33 schwarze 113: pdat->vspans++;
114: break;
115: }
116: }
117: }
118:
119: /*
120: * Count the number of horizontal spans to the right of this cell.
121: * This is purely a matter of the layout, independent of the data.
122: */
123:
1.24 schwarze 124: for (cp = cp->next; cp != NULL; cp = cp->next)
125: if (cp->pos == TBL_CELL_SPAN)
1.33 schwarze 126: dat->hspans++;
1.6 schwarze 127: else
128: break;
1.33 schwarze 129:
130: /* Append the new data cell to the data row. */
1.17 schwarze 131:
1.24 schwarze 132: if (dp->last == NULL)
133: dp->first = dat;
134: else
1.4 schwarze 135: dp->last->next = dat;
1.24 schwarze 136: dp->last = dat;
1.4 schwarze 137:
138: /*
139: * Check for a continued-data scope opening. This consists of a
140: * trailing `T{' at the end of the line. Subsequent lines,
141: * until a standalone `T}', are included in our cell.
142: */
1.1 schwarze 143:
1.24 schwarze 144: if (*pos - sv == 2 && p[sv] == 'T' && p[sv + 1] == '{') {
1.4 schwarze 145: tbl->part = TBL_PART_CDATA;
1.20 schwarze 146: return;
1.4 schwarze 147: }
1.1 schwarze 148:
1.24 schwarze 149: dat->string = mandoc_strndup(p + sv, *pos - sv);
1.1 schwarze 150:
1.34 ! schwarze 151: if (p[*pos] != '\0')
1.4 schwarze 152: (*pos)++;
1.1 schwarze 153:
154: if ( ! strcmp(dat->string, "_"))
1.4 schwarze 155: dat->pos = TBL_DATA_HORIZ;
1.1 schwarze 156: else if ( ! strcmp(dat->string, "="))
1.4 schwarze 157: dat->pos = TBL_DATA_DHORIZ;
1.1 schwarze 158: else if ( ! strcmp(dat->string, "\\_"))
1.4 schwarze 159: dat->pos = TBL_DATA_NHORIZ;
1.1 schwarze 160: else if ( ! strcmp(dat->string, "\\="))
1.4 schwarze 161: dat->pos = TBL_DATA_NDHORIZ;
1.1 schwarze 162: else
1.4 schwarze 163: dat->pos = TBL_DATA_DATA;
164:
1.24 schwarze 165: if ((dat->layout->pos == TBL_CELL_HORIZ ||
166: dat->layout->pos == TBL_CELL_DHORIZ ||
167: dat->layout->pos == TBL_CELL_DOWN) &&
168: dat->pos == TBL_DATA_DATA && *dat->string != '\0')
169: mandoc_msg(MANDOCERR_TBLDATA_SPAN,
170: tbl->parse, ln, sv, dat->string);
1.1 schwarze 171: }
172:
1.32 schwarze 173: void
1.22 schwarze 174: tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
1.4 schwarze 175: {
176: struct tbl_dat *dat;
1.17 schwarze 177: size_t sz;
1.4 schwarze 178:
179: dat = tbl->last_span->last;
1.5 schwarze 180:
181: if (p[pos] == 'T' && p[pos + 1] == '}') {
182: pos += 2;
183: if (p[pos] == tbl->opts.tab) {
184: tbl->part = TBL_PART_DATA;
185: pos++;
1.27 schwarze 186: while (p[pos] != '\0')
187: getdata(tbl, tbl->last_span, ln, p, &pos);
1.32 schwarze 188: return;
1.24 schwarze 189: } else if (p[pos] == '\0') {
1.5 schwarze 190: tbl->part = TBL_PART_DATA;
1.32 schwarze 191: return;
1.5 schwarze 192: }
193:
194: /* Fallthrough: T} is part of a word. */
195: }
1.4 schwarze 196:
1.6 schwarze 197: dat->pos = TBL_DATA_DATA;
1.29 schwarze 198: dat->block = 1;
1.6 schwarze 199:
1.24 schwarze 200: if (dat->string != NULL) {
1.23 schwarze 201: sz = strlen(p + pos) + strlen(dat->string) + 2;
1.4 schwarze 202: dat->string = mandoc_realloc(dat->string, sz);
1.18 schwarze 203: (void)strlcat(dat->string, " ", sz);
1.23 schwarze 204: (void)strlcat(dat->string, p + pos, sz);
1.4 schwarze 205: } else
1.23 schwarze 206: dat->string = mandoc_strdup(p + pos);
1.4 schwarze 207:
1.24 schwarze 208: if (dat->layout->pos == TBL_CELL_DOWN)
1.23 schwarze 209: mandoc_msg(MANDOCERR_TBLDATA_SPAN, tbl->parse,
210: ln, pos, dat->string);
1.4 schwarze 211: }
1.1 schwarze 212:
1.7 schwarze 213: static struct tbl_span *
1.9 schwarze 214: newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
1.7 schwarze 215: {
216: struct tbl_span *dp;
217:
1.24 schwarze 218: dp = mandoc_calloc(1, sizeof(*dp));
1.9 schwarze 219: dp->line = line;
1.13 schwarze 220: dp->opts = &tbl->opts;
1.7 schwarze 221: dp->layout = rp;
1.21 schwarze 222: dp->prev = tbl->last_span;
1.7 schwarze 223:
1.21 schwarze 224: if (dp->prev == NULL) {
225: tbl->first_span = dp;
1.8 schwarze 226: tbl->current_span = NULL;
1.21 schwarze 227: } else
228: dp->prev->next = dp;
229: tbl->last_span = dp;
1.7 schwarze 230:
1.28 schwarze 231: return dp;
1.7 schwarze 232: }
233:
1.20 schwarze 234: void
1.22 schwarze 235: tbl_data(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1 schwarze 236: {
1.4 schwarze 237: struct tbl_row *rp;
1.30 schwarze 238: struct tbl_cell *cp;
1.31 schwarze 239: struct tbl_span *sp;
1.4 schwarze 240:
1.30 schwarze 241: rp = (sp = tbl->last_span) == NULL ? tbl->first_row :
242: sp->pos == TBL_SPAN_DATA && sp->layout->next != NULL ?
243: sp->layout->next : sp->layout;
1.6 schwarze 244:
1.30 schwarze 245: assert(rp != NULL);
1.4 schwarze 246:
1.1 schwarze 247: if ( ! strcmp(p, "_")) {
1.31 schwarze 248: sp = newspan(tbl, ln, rp);
1.30 schwarze 249: sp->pos = TBL_SPAN_HORIZ;
1.20 schwarze 250: return;
1.1 schwarze 251: } else if ( ! strcmp(p, "=")) {
1.31 schwarze 252: sp = newspan(tbl, ln, rp);
1.30 schwarze 253: sp->pos = TBL_SPAN_DHORIZ;
1.20 schwarze 254: return;
1.1 schwarze 255: }
1.30 schwarze 256:
257: /*
1.31 schwarze 258: * If the layout row contains nothing but horizontal lines,
259: * allocate an empty span for it and assign the current span
260: * to the next layout row accepting data.
1.30 schwarze 261: */
262:
1.31 schwarze 263: while (rp->next != NULL) {
264: if (rp->last->col + 1 < tbl->opts.cols)
265: break;
266: for (cp = rp->first; cp != NULL; cp = cp->next)
267: if (cp->pos != TBL_CELL_HORIZ &&
268: cp->pos != TBL_CELL_DHORIZ)
269: break;
270: if (cp != NULL)
271: break;
272: sp = newspan(tbl, ln, rp);
273: sp->pos = TBL_SPAN_DATA;
274: rp = rp->next;
1.30 schwarze 275: }
1.1 schwarze 276:
1.31 schwarze 277: /* Process a real data row. */
1.1 schwarze 278:
1.31 schwarze 279: sp = newspan(tbl, ln, rp);
280: sp->pos = TBL_SPAN_DATA;
281: while (p[pos] != '\0')
282: getdata(tbl, sp, ln, p, &pos);
1.1 schwarze 283: }
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