Annotation of src/usr.bin/mandoc/tbl_data.c, Revision 1.11
1.11 ! schwarze 1: /* $Id: tbl_data.c,v 1.10 2011/04/21 22:59:54 schwarze Exp $ */
1.1 schwarze 2: /*
1.4 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.7 schwarze 4: * Copyright (c) 2011 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: */
18: #include <assert.h>
19: #include <ctype.h>
20: #include <stdlib.h>
21: #include <string.h>
1.4 schwarze 22: #include <time.h>
1.1 schwarze 23:
1.4 schwarze 24: #include "mandoc.h"
25: #include "libmandoc.h"
26: #include "libroff.h"
27:
1.9 schwarze 28: static int data(struct tbl_node *, struct tbl_span *,
29: int, const char *, int *);
30: static struct tbl_span *newspan(struct tbl_node *, int,
31: struct tbl_row *);
1.4 schwarze 32:
33: static int
34: data(struct tbl_node *tbl, struct tbl_span *dp,
35: int ln, const char *p, int *pos)
1.1 schwarze 36: {
1.4 schwarze 37: struct tbl_dat *dat;
38: struct tbl_cell *cp;
1.6 schwarze 39: int sv, spans;
1.4 schwarze 40:
41: cp = NULL;
42: if (dp->last && dp->last->layout)
43: cp = dp->last->layout->next;
44: else if (NULL == dp->last)
45: cp = dp->layout->first;
46:
1.5 schwarze 47: /*
48: * Skip over spanners and vertical lines to data formats, since
49: * we want to match data with data layout cells in the header.
50: */
1.4 schwarze 51:
52: while (cp && (TBL_CELL_VERT == cp->pos ||
1.5 schwarze 53: TBL_CELL_DVERT == cp->pos ||
54: TBL_CELL_SPAN == cp->pos))
1.4 schwarze 55: cp = cp->next;
56:
1.6 schwarze 57: /*
58: * Stop processing when we reach the end of the available layout
59: * cells. This means that we have extra input.
60: */
61:
62: if (NULL == cp) {
1.11 ! schwarze 63: mandoc_msg(MANDOCERR_TBLEXTRADAT,
! 64: tbl->parse, ln, *pos, NULL);
1.6 schwarze 65: /* Skip to the end... */
66: while (p[*pos])
67: (*pos)++;
68: return(1);
69: }
70:
1.4 schwarze 71: dat = mandoc_calloc(1, sizeof(struct tbl_dat));
72: dat->layout = cp;
73: dat->pos = TBL_DATA_NONE;
74:
1.6 schwarze 75: assert(TBL_CELL_SPAN != cp->pos);
76:
77: for (spans = 0, cp = cp->next; cp; cp = cp->next)
78: if (TBL_CELL_SPAN == cp->pos)
79: spans++;
80: else
81: break;
82:
83: dat->spans = spans;
1.4 schwarze 84:
85: if (dp->last) {
86: dp->last->next = dat;
87: dp->last = dat;
88: } else
89: dp->last = dp->first = dat;
90:
91: sv = *pos;
92: while (p[*pos] && p[*pos] != tbl->opts.tab)
93: (*pos)++;
94:
95: /*
96: * Check for a continued-data scope opening. This consists of a
97: * trailing `T{' at the end of the line. Subsequent lines,
98: * until a standalone `T}', are included in our cell.
99: */
1.1 schwarze 100:
1.4 schwarze 101: if (*pos - sv == 2 && 'T' == p[sv] && '{' == p[sv + 1]) {
102: tbl->part = TBL_PART_CDATA;
1.1 schwarze 103: return(0);
1.4 schwarze 104: }
1.1 schwarze 105:
1.10 schwarze 106: assert(*pos - sv >= 0);
107:
108: dat->string = mandoc_malloc((size_t)(*pos - sv + 1));
109: memcpy(dat->string, &p[sv], (size_t)(*pos - sv));
1.4 schwarze 110: dat->string[*pos - sv] = '\0';
1.1 schwarze 111:
1.4 schwarze 112: if (p[*pos])
113: (*pos)++;
1.1 schwarze 114:
115: if ( ! strcmp(dat->string, "_"))
1.4 schwarze 116: dat->pos = TBL_DATA_HORIZ;
1.1 schwarze 117: else if ( ! strcmp(dat->string, "="))
1.4 schwarze 118: dat->pos = TBL_DATA_DHORIZ;
1.1 schwarze 119: else if ( ! strcmp(dat->string, "\\_"))
1.4 schwarze 120: dat->pos = TBL_DATA_NHORIZ;
1.1 schwarze 121: else if ( ! strcmp(dat->string, "\\="))
1.4 schwarze 122: dat->pos = TBL_DATA_NDHORIZ;
1.1 schwarze 123: else
1.4 schwarze 124: dat->pos = TBL_DATA_DATA;
125:
126: if (TBL_CELL_HORIZ == dat->layout->pos ||
1.6 schwarze 127: TBL_CELL_DHORIZ == dat->layout->pos ||
128: TBL_CELL_DOWN == dat->layout->pos)
1.4 schwarze 129: if (TBL_DATA_DATA == dat->pos && '\0' != *dat->string)
1.11 ! schwarze 130: mandoc_msg(MANDOCERR_TBLIGNDATA,
! 131: tbl->parse, ln, sv, NULL);
1.4 schwarze 132:
1.1 schwarze 133: return(1);
134: }
135:
1.5 schwarze 136: /* ARGSUSED */
1.4 schwarze 137: int
138: tbl_cdata(struct tbl_node *tbl, int ln, const char *p)
139: {
140: struct tbl_dat *dat;
141: size_t sz;
1.5 schwarze 142: int pos;
1.4 schwarze 143:
1.5 schwarze 144: pos = 0;
1.4 schwarze 145:
146: dat = tbl->last_span->last;
1.5 schwarze 147:
148: if (p[pos] == 'T' && p[pos + 1] == '}') {
149: pos += 2;
150: if (p[pos] == tbl->opts.tab) {
151: tbl->part = TBL_PART_DATA;
152: pos++;
153: return(data(tbl, tbl->last_span, ln, p, &pos));
154: } else if ('\0' == p[pos]) {
155: tbl->part = TBL_PART_DATA;
156: return(1);
157: }
158:
159: /* Fallthrough: T} is part of a word. */
160: }
1.4 schwarze 161:
1.6 schwarze 162: dat->pos = TBL_DATA_DATA;
163:
1.4 schwarze 164: if (dat->string) {
165: sz = strlen(p) + strlen(dat->string) + 2;
166: dat->string = mandoc_realloc(dat->string, sz);
167: strlcat(dat->string, " ", sz);
168: strlcat(dat->string, p, sz);
169: } else
170: dat->string = mandoc_strdup(p);
171:
1.6 schwarze 172: if (TBL_CELL_DOWN == dat->layout->pos)
1.11 ! schwarze 173: mandoc_msg(MANDOCERR_TBLIGNDATA,
! 174: tbl->parse, ln, pos, NULL);
1.6 schwarze 175:
1.4 schwarze 176: return(0);
177: }
1.1 schwarze 178:
1.7 schwarze 179: static struct tbl_span *
1.9 schwarze 180: newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
1.7 schwarze 181: {
182: struct tbl_span *dp;
183:
184: dp = mandoc_calloc(1, sizeof(struct tbl_span));
1.9 schwarze 185: dp->line = line;
1.7 schwarze 186: dp->tbl = &tbl->opts;
187: dp->layout = rp;
188: dp->head = tbl->first_head;
189:
190: if (tbl->last_span) {
191: tbl->last_span->next = dp;
192: tbl->last_span = dp;
193: } else {
194: tbl->last_span = tbl->first_span = dp;
1.8 schwarze 195: tbl->current_span = NULL;
1.7 schwarze 196: dp->flags |= TBL_SPAN_FIRST;
197: }
198:
199: return(dp);
200: }
201:
1.1 schwarze 202: int
1.4 schwarze 203: tbl_data(struct tbl_node *tbl, int ln, const char *p)
1.1 schwarze 204: {
205: struct tbl_span *dp;
1.4 schwarze 206: struct tbl_row *rp;
207: int pos;
208:
209: pos = 0;
1.1 schwarze 210:
1.4 schwarze 211: if ('\0' == p[pos]) {
1.11 ! schwarze 212: mandoc_msg(MANDOCERR_TBL, tbl->parse, ln, pos, NULL);
1.4 schwarze 213: return(0);
1.1 schwarze 214: }
215:
1.4 schwarze 216: /*
217: * Choose a layout row: take the one following the last parsed
218: * span's. If that doesn't exist, use the last parsed span's.
1.6 schwarze 219: * If there's no last parsed span, use the first row. Lastly,
220: * if the last span was a horizontal line, use the same layout
221: * (it doesn't "consume" the layout).
1.4 schwarze 222: */
223:
224: if (tbl->last_span) {
225: assert(tbl->last_span->layout);
1.7 schwarze 226: if (tbl->last_span->pos == TBL_SPAN_DATA) {
227: for (rp = tbl->last_span->layout->next;
228: rp && rp->first; rp = rp->next) {
229: switch (rp->first->pos) {
230: case (TBL_CELL_HORIZ):
1.9 schwarze 231: dp = newspan(tbl, ln, rp);
1.7 schwarze 232: dp->pos = TBL_SPAN_HORIZ;
233: continue;
234: case (TBL_CELL_DHORIZ):
1.9 schwarze 235: dp = newspan(tbl, ln, rp);
1.7 schwarze 236: dp->pos = TBL_SPAN_DHORIZ;
237: continue;
238: default:
239: break;
240: }
241: break;
242: }
243: } else
1.6 schwarze 244: rp = tbl->last_span->layout;
245:
1.4 schwarze 246: if (NULL == rp)
247: rp = tbl->last_span->layout;
248: } else
249: rp = tbl->first_row;
1.6 schwarze 250:
251: assert(rp);
1.4 schwarze 252:
1.9 schwarze 253: dp = newspan(tbl, ln, rp);
1.1 schwarze 254:
255: if ( ! strcmp(p, "_")) {
1.4 schwarze 256: dp->pos = TBL_SPAN_HORIZ;
1.1 schwarze 257: return(1);
258: } else if ( ! strcmp(p, "=")) {
1.4 schwarze 259: dp->pos = TBL_SPAN_DHORIZ;
1.1 schwarze 260: return(1);
261: }
262:
1.4 schwarze 263: dp->pos = TBL_SPAN_DATA;
1.1 schwarze 264:
1.4 schwarze 265: /* This returns 0 when TBL_PART_CDATA is entered. */
1.1 schwarze 266:
1.4 schwarze 267: while ('\0' != p[pos])
268: if ( ! data(tbl, dp, ln, p, &pos))
269: return(0);
1.1 schwarze 270:
271: return(1);
272: }
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