1 /* $Id: tbl_html.c,v 1.38 2021/09/09 16:52:52 schwarze Exp $ */
2 /*
3 * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2014,2015,2017,2018,2021 Ingo Schwarze <schwarze@openbsd.org>
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 "config.h"
19
20 #include <sys/types.h>
21
22 #include <assert.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26
27 #include "mandoc.h"
28 #include "roff.h"
29 #include "tbl.h"
30 #include "out.h"
31 #include "html.h"
32
33 static void html_tblopen(struct html *, const struct tbl_span *);
34 static size_t html_tbl_len(size_t, void *);
35 static size_t html_tbl_strlen(const char *, void *);
36 static size_t html_tbl_sulen(const struct roffsu *, void *);
37
38
39 static size_t
html_tbl_len(size_t sz,void * arg)40 html_tbl_len(size_t sz, void *arg)
41 {
42 return sz;
43 }
44
45 static size_t
html_tbl_strlen(const char * p,void * arg)46 html_tbl_strlen(const char *p, void *arg)
47 {
48 return strlen(p);
49 }
50
51 static size_t
html_tbl_sulen(const struct roffsu * su,void * arg)52 html_tbl_sulen(const struct roffsu *su, void *arg)
53 {
54 if (su->scale < 0.0)
55 return 0;
56
57 switch (su->unit) {
58 case SCALE_FS: /* 2^16 basic units */
59 return su->scale * 65536.0 / 24.0;
60 case SCALE_IN: /* 10 characters per inch */
61 return su->scale * 10.0;
62 case SCALE_CM: /* 2.54 cm per inch */
63 return su->scale * 10.0 / 2.54;
64 case SCALE_PC: /* 6 pica per inch */
65 case SCALE_VS:
66 return su->scale * 10.0 / 6.0;
67 case SCALE_EN:
68 case SCALE_EM:
69 return su->scale;
70 case SCALE_PT: /* 12 points per pica */
71 return su->scale * 10.0 / 6.0 / 12.0;
72 case SCALE_BU: /* 24 basic units per character */
73 return su->scale / 24.0;
74 case SCALE_MM: /* 1/1000 inch */
75 return su->scale / 100.0;
76 default:
77 abort();
78 }
79 }
80
81 static void
html_tblopen(struct html * h,const struct tbl_span * sp)82 html_tblopen(struct html *h, const struct tbl_span *sp)
83 {
84 html_close_paragraph(h);
85 if (h->tbl.cols == NULL) {
86 h->tbl.len = html_tbl_len;
87 h->tbl.slen = html_tbl_strlen;
88 h->tbl.sulen = html_tbl_sulen;
89 tblcalc(&h->tbl, sp, 0, 0);
90 }
91 assert(NULL == h->tblt);
92 h->tblt = print_otag(h, TAG_TABLE, "c?ss", "tbl",
93 "border",
94 sp->opts->opts & TBL_OPT_ALLBOX ? "1" : NULL,
95 "border-style",
96 sp->opts->opts & TBL_OPT_DBOX ? "double" :
97 sp->opts->opts & TBL_OPT_BOX ? "solid" : NULL,
98 "border-top-style",
99 sp->pos == TBL_SPAN_DHORIZ ? "double" :
100 sp->pos == TBL_SPAN_HORIZ ? "solid" : NULL);
101 }
102
103 void
print_tblclose(struct html * h)104 print_tblclose(struct html *h)
105 {
106
107 assert(h->tblt);
108 print_tagq(h, h->tblt);
109 h->tblt = NULL;
110 }
111
112 void
print_tbl(struct html * h,const struct tbl_span * sp)113 print_tbl(struct html *h, const struct tbl_span *sp)
114 {
115 const struct tbl_dat *dp;
116 const struct tbl_cell *cp;
117 const struct tbl_span *psp;
118 const struct roffcol *col;
119 struct tag *tt;
120 const char *hspans, *vspans, *halign, *valign;
121 const char *bborder, *lborder, *rborder;
122 const char *ccp;
123 char hbuf[4], vbuf[4];
124 size_t sz;
125 enum mandoc_esc save_font;
126 int i;
127
128 if (h->tblt == NULL)
129 html_tblopen(h, sp);
130
131 /*
132 * Horizontal lines spanning the whole table
133 * are handled by previous or following table rows.
134 */
135
136 if (sp->pos != TBL_SPAN_DATA)
137 return;
138
139 /* Inhibit printing of spaces: we do padding ourselves. */
140
141 h->flags |= HTML_NONOSPACE;
142 h->flags |= HTML_NOSPACE;
143
144 /* Draw a vertical line left of this row? */
145
146 switch (sp->layout->vert) {
147 case 2:
148 lborder = "double";
149 break;
150 case 1:
151 lborder = "solid";
152 break;
153 default:
154 lborder = NULL;
155 break;
156 }
157
158 /* Draw a horizontal line below this row? */
159
160 bborder = NULL;
161 if ((psp = sp->next) != NULL) {
162 switch (psp->pos) {
163 case TBL_SPAN_DHORIZ:
164 bborder = "double";
165 break;
166 case TBL_SPAN_HORIZ:
167 bborder = "solid";
168 break;
169 default:
170 break;
171 }
172 }
173
174 tt = print_otag(h, TAG_TR, "ss",
175 "border-left-style", lborder,
176 "border-bottom-style", bborder);
177
178 for (dp = sp->first; dp != NULL; dp = dp->next) {
179 print_stagq(h, tt);
180
181 /*
182 * Do not generate <td> elements for continuations
183 * of spanned cells. Larger <td> elements covering
184 * this space were already generated earlier.
185 */
186
187 cp = dp->layout;
188 if (cp->pos == TBL_CELL_SPAN || cp->pos == TBL_CELL_DOWN ||
189 (dp->string != NULL && strcmp(dp->string, "\\^") == 0))
190 continue;
191
192 /* Determine the attribute values. */
193
194 if (dp->hspans > 0) {
195 (void)snprintf(hbuf, sizeof(hbuf),
196 "%d", dp->hspans + 1);
197 hspans = hbuf;
198 } else
199 hspans = NULL;
200 if (dp->vspans > 0) {
201 (void)snprintf(vbuf, sizeof(vbuf),
202 "%d", dp->vspans + 1);
203 vspans = vbuf;
204 } else
205 vspans = NULL;
206
207 switch (cp->pos) {
208 case TBL_CELL_CENTRE:
209 halign = "center";
210 break;
211 case TBL_CELL_RIGHT:
212 case TBL_CELL_NUMBER:
213 halign = "right";
214 break;
215 default:
216 halign = NULL;
217 break;
218 }
219 if (cp->flags & TBL_CELL_TALIGN)
220 valign = "top";
221 else if (cp->flags & TBL_CELL_BALIGN)
222 valign = "bottom";
223 else
224 valign = NULL;
225
226 for (i = dp->hspans; i > 0; i--)
227 cp = cp->next;
228 switch (cp->vert) {
229 case 2:
230 rborder = "double";
231 break;
232 case 1:
233 rborder = "solid";
234 break;
235 default:
236 rborder = NULL;
237 break;
238 }
239
240 /* Print the element and the attributes. */
241
242 print_otag(h, TAG_TD, "??sss",
243 "colspan", hspans, "rowspan", vspans,
244 "vertical-align", valign,
245 "text-align", halign,
246 "border-right-style", rborder);
247 if (dp->layout->pos == TBL_CELL_HORIZ ||
248 dp->layout->pos == TBL_CELL_DHORIZ ||
249 dp->pos == TBL_DATA_HORIZ ||
250 dp->pos == TBL_DATA_DHORIZ)
251 print_otag(h, TAG_HR, "");
252 else if (dp->string != NULL) {
253 save_font = h->metac;
254 html_setfont(h, dp->layout->font);
255 if (dp->layout->pos == TBL_CELL_LONG)
256 print_text(h, "\\[u2003]"); /* em space */
257 print_text(h, dp->string);
258 if (dp->layout->pos == TBL_CELL_NUMBER) {
259 col = h->tbl.cols + dp->layout->col;
260 if (col->decimal < col->nwidth) {
261 if ((ccp = strrchr(dp->string,
262 sp->opts->decimal)) == NULL) {
263 /* Punctuation space. */
264 print_text(h, "\\[u2008]");
265 ccp = strchr(dp->string, '\0');
266 } else
267 ccp++;
268 sz = col->nwidth - col->decimal;
269 while (--sz > 0) {
270 if (*ccp == '\0')
271 /* Figure space. */
272 print_text(h,
273 "\\[u2007]");
274 else
275 ccp++;
276 }
277 }
278 }
279 html_setfont(h, save_font);
280 }
281 }
282
283 print_tagq(h, tt);
284
285 h->flags &= ~HTML_NONOSPACE;
286
287 if (sp->next == NULL) {
288 assert(h->tbl.cols);
289 free(h->tbl.cols);
290 h->tbl.cols = NULL;
291 print_tblclose(h);
292 }
293 }
294