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[dragonfly.git] / contrib / mdocml / tbl_data.c
blob1db24a613a3f02d07476824a53b513a422ce289a
1 /* $Id: tbl_data.c,v 1.31 2014/04/23 16:08:33 schwarze Exp $ */
2 /*
3 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
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.
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.
18 #ifdef HAVE_CONFIG_H
19 #include "config.h"
20 #endif
22 #include <assert.h>
23 #include <ctype.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <time.h>
28 #include "mandoc.h"
29 #include "mandoc_aux.h"
30 #include "libmandoc.h"
31 #include "libroff.h"
33 static int getdata(struct tbl_node *, struct tbl_span *,
34 int, const char *, int *);
35 static struct tbl_span *newspan(struct tbl_node *, int,
36 struct tbl_row *);
39 static int
40 getdata(struct tbl_node *tbl, struct tbl_span *dp,
41 int ln, const char *p, int *pos)
43 struct tbl_dat *dat;
44 struct tbl_cell *cp;
45 int sv, spans;
47 cp = NULL;
48 if (dp->last && dp->last->layout)
49 cp = dp->last->layout->next;
50 else if (NULL == dp->last)
51 cp = dp->layout->first;
54 * Skip over spanners, since
55 * we want to match data with data layout cells in the header.
58 while (cp && TBL_CELL_SPAN == cp->pos)
59 cp = cp->next;
62 * Stop processing when we reach the end of the available layout
63 * cells. This means that we have extra input.
66 if (NULL == cp) {
67 mandoc_msg(MANDOCERR_TBLEXTRADAT, tbl->parse,
68 ln, *pos, NULL);
69 /* Skip to the end... */
70 while (p[*pos])
71 (*pos)++;
72 return(1);
75 dat = mandoc_calloc(1, sizeof(struct tbl_dat));
76 dat->layout = cp;
77 dat->pos = TBL_DATA_NONE;
79 assert(TBL_CELL_SPAN != cp->pos);
81 for (spans = 0, cp = cp->next; cp; cp = cp->next)
82 if (TBL_CELL_SPAN == cp->pos)
83 spans++;
84 else
85 break;
87 dat->spans = spans;
89 if (dp->last) {
90 dp->last->next = dat;
91 dp->last = dat;
92 } else
93 dp->last = dp->first = dat;
95 sv = *pos;
96 while (p[*pos] && p[*pos] != tbl->opts.tab)
97 (*pos)++;
100 * Check for a continued-data scope opening. This consists of a
101 * trailing `T{' at the end of the line. Subsequent lines,
102 * until a standalone `T}', are included in our cell.
105 if (*pos - sv == 2 && 'T' == p[sv] && '{' == p[sv + 1]) {
106 tbl->part = TBL_PART_CDATA;
107 return(1);
110 assert(*pos - sv >= 0);
112 dat->string = mandoc_malloc((size_t)(*pos - sv + 1));
113 memcpy(dat->string, &p[sv], (size_t)(*pos - sv));
114 dat->string[*pos - sv] = '\0';
116 if (p[*pos])
117 (*pos)++;
119 if ( ! strcmp(dat->string, "_"))
120 dat->pos = TBL_DATA_HORIZ;
121 else if ( ! strcmp(dat->string, "="))
122 dat->pos = TBL_DATA_DHORIZ;
123 else if ( ! strcmp(dat->string, "\\_"))
124 dat->pos = TBL_DATA_NHORIZ;
125 else if ( ! strcmp(dat->string, "\\="))
126 dat->pos = TBL_DATA_NDHORIZ;
127 else
128 dat->pos = TBL_DATA_DATA;
130 if (TBL_CELL_HORIZ == dat->layout->pos ||
131 TBL_CELL_DHORIZ == dat->layout->pos ||
132 TBL_CELL_DOWN == dat->layout->pos)
133 if (TBL_DATA_DATA == dat->pos && '\0' != *dat->string)
134 mandoc_msg(MANDOCERR_TBLIGNDATA,
135 tbl->parse, ln, sv, NULL);
137 return(1);
141 tbl_cdata(struct tbl_node *tbl, int ln, const char *p)
143 struct tbl_dat *dat;
144 size_t sz;
145 int pos;
147 pos = 0;
149 dat = tbl->last_span->last;
151 if (p[pos] == 'T' && p[pos + 1] == '}') {
152 pos += 2;
153 if (p[pos] == tbl->opts.tab) {
154 tbl->part = TBL_PART_DATA;
155 pos++;
156 return(getdata(tbl, tbl->last_span, ln, p, &pos));
157 } else if ('\0' == p[pos]) {
158 tbl->part = TBL_PART_DATA;
159 return(1);
162 /* Fallthrough: T} is part of a word. */
165 dat->pos = TBL_DATA_DATA;
167 if (dat->string) {
168 sz = strlen(p) + strlen(dat->string) + 2;
169 dat->string = mandoc_realloc(dat->string, sz);
170 (void)strlcat(dat->string, " ", sz);
171 (void)strlcat(dat->string, p, sz);
172 } else
173 dat->string = mandoc_strdup(p);
175 if (TBL_CELL_DOWN == dat->layout->pos)
176 mandoc_msg(MANDOCERR_TBLIGNDATA, tbl->parse,
177 ln, pos, NULL);
179 return(0);
182 static struct tbl_span *
183 newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
185 struct tbl_span *dp;
187 dp = mandoc_calloc(1, sizeof(struct tbl_span));
188 dp->line = line;
189 dp->opts = &tbl->opts;
190 dp->layout = rp;
191 dp->head = tbl->first_head;
193 if (tbl->last_span) {
194 tbl->last_span->next = dp;
195 tbl->last_span = dp;
196 } else {
197 tbl->last_span = tbl->first_span = dp;
198 tbl->current_span = NULL;
199 dp->flags |= TBL_SPAN_FIRST;
202 return(dp);
206 tbl_data(struct tbl_node *tbl, int ln, const char *p)
208 struct tbl_span *dp;
209 struct tbl_row *rp;
210 int pos;
212 pos = 0;
214 if ('\0' == p[pos]) {
215 mandoc_msg(MANDOCERR_TBL, tbl->parse, ln, pos, NULL);
216 return(0);
220 * Choose a layout row: take the one following the last parsed
221 * span's. If that doesn't exist, use the last parsed span's.
222 * If there's no last parsed span, use the first row. Lastly,
223 * if the last span was a horizontal line, use the same layout
224 * (it doesn't "consume" the layout).
227 if (tbl->last_span) {
228 assert(tbl->last_span->layout);
229 if (tbl->last_span->pos == TBL_SPAN_DATA) {
230 for (rp = tbl->last_span->layout->next;
231 rp && rp->first; rp = rp->next) {
232 switch (rp->first->pos) {
233 case TBL_CELL_HORIZ:
234 dp = newspan(tbl, ln, rp);
235 dp->pos = TBL_SPAN_HORIZ;
236 continue;
237 case TBL_CELL_DHORIZ:
238 dp = newspan(tbl, ln, rp);
239 dp->pos = TBL_SPAN_DHORIZ;
240 continue;
241 default:
242 break;
244 break;
246 } else
247 rp = tbl->last_span->layout;
249 if (NULL == rp)
250 rp = tbl->last_span->layout;
251 } else
252 rp = tbl->first_row;
254 assert(rp);
256 dp = newspan(tbl, ln, rp);
258 if ( ! strcmp(p, "_")) {
259 dp->pos = TBL_SPAN_HORIZ;
260 return(1);
261 } else if ( ! strcmp(p, "=")) {
262 dp->pos = TBL_SPAN_DHORIZ;
263 return(1);
266 dp->pos = TBL_SPAN_DATA;
268 /* This returns 0 when TBL_PART_CDATA is entered. */
270 while ('\0' != p[pos])
271 if ( ! getdata(tbl, dp, ln, p, &pos))
272 return(0);
274 return(1);