1 /* $OpenBSD: tbl_html.c,v 1.35 2022/04/23 13:58:09 schwarze Exp $ */
2 /*
3 * Copyright (c) 2014, 2015, 2017, 2018, 2021, 2022
4 * Ingo Schwarze <schwarze@openbsd.org>
5 * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19 #include <sys/types.h>
20
21 #include <assert.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 #include "mandoc.h"
27 #include "roff.h"
28 #include "tbl.h"
29 #include "out.h"
30 #include "html.h"
31
32 static void html_tblopen(struct html *, const struct tbl_span *);
33 static size_t html_tbl_len(size_t, void *);
34 static size_t html_tbl_strlen(const char *, void *);
35 static size_t html_tbl_sulen(const struct roffsu *, void *);
36
37
38 static size_t
html_tbl_len(size_t sz,void * arg)39 html_tbl_len(size_t sz, void *arg)
40 {
41 return sz;
42 }
43
44 static size_t
html_tbl_strlen(const char * p,void * arg)45 html_tbl_strlen(const char *p, void *arg)
46 {
47 return strlen(p);
48 }
49
50 static size_t
html_tbl_sulen(const struct roffsu * su,void * arg)51 html_tbl_sulen(const struct roffsu *su, void *arg)
52 {
53 if (su->scale < 0.0)
54 return 0;
55
56 switch (su->unit) {
57 case SCALE_FS: /* 2^16 basic units */
58 return su->scale * 65536.0 / 24.0;
59 case SCALE_IN: /* 10 characters per inch */
60 return su->scale * 10.0;
61 case SCALE_CM: /* 2.54 cm per inch */
62 return su->scale * 10.0 / 2.54;
63 case SCALE_PC: /* 6 pica per inch */
64 case SCALE_VS:
65 return su->scale * 10.0 / 6.0;
66 case SCALE_EN:
67 case SCALE_EM:
68 return su->scale;
69 case SCALE_PT: /* 12 points per pica */
70 return su->scale * 10.0 / 6.0 / 12.0;
71 case SCALE_BU: /* 24 basic units per character */
72 return su->scale / 24.0;
73 case SCALE_MM: /* 1/1000 inch */
74 return su->scale / 100.0;
75 default:
76 abort();
77 }
78 }
79
80 static void
html_tblopen(struct html * h,const struct tbl_span * sp)81 html_tblopen(struct html *h, const struct tbl_span *sp)
82 {
83 html_close_paragraph(h);
84 if (h->tbl.cols == NULL) {
85 h->tbl.len = html_tbl_len;
86 h->tbl.slen = html_tbl_strlen;
87 h->tbl.sulen = html_tbl_sulen;
88 tblcalc(&h->tbl, sp, 0, 0);
89 }
90 assert(NULL == h->tblt);
91 h->tblt = print_otag(h, TAG_TABLE, "c?ss", "tbl",
92 "border",
93 sp->opts->opts & TBL_OPT_ALLBOX ? "1" : NULL,
94 "border-style",
95 sp->opts->opts & TBL_OPT_DBOX ? "double" :
96 sp->opts->opts & TBL_OPT_BOX ? "solid" : NULL,
97 "border-top-style",
98 sp->pos == TBL_SPAN_DHORIZ ? "double" :
99 sp->pos == TBL_SPAN_HORIZ ? "solid" : NULL);
100 }
101
102 void
print_tblclose(struct html * h)103 print_tblclose(struct html *h)
104 {
105
106 assert(h->tblt);
107 print_tagq(h, h->tblt);
108 h->tblt = NULL;
109 }
110
111 void
print_tbl(struct html * h,const struct tbl_span * sp)112 print_tbl(struct html *h, const struct tbl_span *sp)
113 {
114 const struct tbl_dat *dp;
115 const struct tbl_cell *cp;
116 const struct tbl_span *psp;
117 const struct roffcol *col;
118 struct tag *tt;
119 const char *hspans, *vspans, *halign, *valign;
120 const char *bborder, *lborder, *rborder;
121 const char *ccp;
122 char hbuf[4], vbuf[4];
123 size_t sz;
124 enum mandoc_esc save_font;
125 int i;
126
127 if (h->tblt == NULL)
128 html_tblopen(h, sp);
129
130 /*
131 * Horizontal lines spanning the whole table
132 * are handled by previous or following table rows.
133 */
134
135 if (sp->pos != TBL_SPAN_DATA)
136 goto out;
137
138 /* Inhibit printing of spaces: we do padding ourselves. */
139
140 h->flags |= HTML_NONOSPACE;
141 h->flags |= HTML_NOSPACE;
142
143 /* Draw a vertical line left of this row? */
144
145 switch (sp->layout->vert) {
146 case 2:
147 lborder = "double";
148 break;
149 case 1:
150 lborder = "solid";
151 break;
152 default:
153 lborder = NULL;
154 break;
155 }
156
157 /* Draw a horizontal line below this row? */
158
159 bborder = NULL;
160 if ((psp = sp->next) != NULL) {
161 switch (psp->pos) {
162 case TBL_SPAN_DHORIZ:
163 bborder = "double";
164 break;
165 case TBL_SPAN_HORIZ:
166 bborder = "solid";
167 break;
168 default:
169 break;
170 }
171 }
172
173 tt = print_otag(h, TAG_TR, "ss",
174 "border-left-style", lborder,
175 "border-bottom-style", bborder);
176
177 for (dp = sp->first; dp != NULL; dp = dp->next) {
178 print_stagq(h, tt);
179
180 /*
181 * Do not generate <td> elements for continuations
182 * of spanned cells. Larger <td> elements covering
183 * this space were already generated earlier.
184 */
185
186 cp = dp->layout;
187 if (cp->pos == TBL_CELL_SPAN || cp->pos == TBL_CELL_DOWN ||
188 (dp->string != NULL && strcmp(dp->string, "\\^") == 0))
189 continue;
190
191 /* Determine the attribute values. */
192
193 if (dp->hspans > 0) {
194 (void)snprintf(hbuf, sizeof(hbuf),
195 "%d", dp->hspans + 1);
196 hspans = hbuf;
197 } else
198 hspans = NULL;
199 if (dp->vspans > 0) {
200 (void)snprintf(vbuf, sizeof(vbuf),
201 "%d", dp->vspans + 1);
202 vspans = vbuf;
203 } else
204 vspans = NULL;
205
206 switch (cp->pos) {
207 case TBL_CELL_CENTRE:
208 halign = "center";
209 break;
210 case TBL_CELL_RIGHT:
211 case TBL_CELL_NUMBER:
212 halign = "right";
213 break;
214 default:
215 halign = NULL;
216 break;
217 }
218 if (cp->flags & TBL_CELL_TALIGN)
219 valign = "top";
220 else if (cp->flags & TBL_CELL_BALIGN)
221 valign = "bottom";
222 else
223 valign = NULL;
224
225 for (i = dp->hspans; i > 0; i--)
226 cp = cp->next;
227 switch (cp->vert) {
228 case 2:
229 rborder = "double";
230 break;
231 case 1:
232 rborder = "solid";
233 break;
234 default:
235 rborder = NULL;
236 break;
237 }
238
239 /* Print the element and the attributes. */
240
241 print_otag(h, TAG_TD, "??sss",
242 "colspan", hspans, "rowspan", vspans,
243 "vertical-align", valign,
244 "text-align", halign,
245 "border-right-style", rborder);
246 if (dp->layout->pos == TBL_CELL_HORIZ ||
247 dp->layout->pos == TBL_CELL_DHORIZ ||
248 dp->pos == TBL_DATA_HORIZ ||
249 dp->pos == TBL_DATA_NHORIZ ||
250 dp->pos == TBL_DATA_DHORIZ ||
251 dp->pos == TBL_DATA_NDHORIZ)
252 print_otag(h, TAG_HR, "");
253 else if (dp->string != NULL) {
254 save_font = h->metac;
255 html_setfont(h, dp->layout->font);
256 if (dp->layout->pos == TBL_CELL_LONG)
257 print_text(h, "\\[u2003]"); /* em space */
258 print_text(h, dp->string);
259 if (dp->layout->pos == TBL_CELL_NUMBER) {
260 col = h->tbl.cols + dp->layout->col;
261 if (col->decimal < col->nwidth) {
262 if ((ccp = strrchr(dp->string,
263 sp->opts->decimal)) == NULL) {
264 /* Punctuation space. */
265 print_text(h, "\\[u2008]");
266 ccp = strchr(dp->string, '\0');
267 } else
268 ccp++;
269 sz = col->nwidth - col->decimal;
270 while (--sz > 0) {
271 if (*ccp == '\0')
272 /* Figure space. */
273 print_text(h,
274 "\\[u2007]");
275 else
276 ccp++;
277 }
278 }
279 }
280 html_setfont(h, save_font);
281 }
282 }
283
284 print_tagq(h, tt);
285
286 h->flags &= ~HTML_NONOSPACE;
287
288 out:
289 if (sp->next == NULL) {
290 assert(h->tbl.cols);
291 free(h->tbl.cols);
292 h->tbl.cols = NULL;
293 print_tblclose(h);
294 }
295 }
296