Import mdocml-1.13.1
[dragonfly.git] / contrib / mdocml / out.c
CommitLineData
070c62a6 1/* $Id: out.c,v 1.49 2014/08/01 19:25:52 schwarze Exp $ */
80387638 2/*
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3 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
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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#ifdef HAVE_CONFIG_H
19#include "config.h"
20#endif
21
22#include <sys/types.h>
23
24#include <assert.h>
25#include <ctype.h>
26#include <stdio.h>
27#include <stdlib.h>
28#include <string.h>
29#include <time.h>
30
070c62a6 31#include "mandoc_aux.h"
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32#include "mandoc.h"
33#include "out.h"
34
35static void tblcalc_data(struct rofftbl *, struct roffcol *,
f88b6c16 36 const struct tbl_opts *, const struct tbl_dat *);
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37static void tblcalc_literal(struct rofftbl *, struct roffcol *,
38 const struct tbl_dat *);
39static void tblcalc_number(struct rofftbl *, struct roffcol *,
f88b6c16 40 const struct tbl_opts *, const struct tbl_dat *);
80387638 41
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42
43/*
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44 * Convert a `scaling unit' to a consistent form, or fail. Scaling
45 * units are documented in groff.7, mdoc.7, man.7.
46 */
47int
48a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
49{
50 char buf[BUFSIZ], hasd;
51 int i;
52 enum roffscale unit;
53
54 if ('\0' == *src)
55 return(0);
56
57 i = hasd = 0;
58
59 switch (*src) {
070c62a6 60 case '+':
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61 src++;
62 break;
070c62a6 63 case '-':
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64 buf[i++] = *src++;
65 break;
66 default:
67 break;
68 }
69
70 if ('\0' == *src)
71 return(0);
72
73 while (i < BUFSIZ) {
36342e81 74 if ( ! isdigit((unsigned char)*src)) {
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75 if ('.' != *src)
76 break;
77 else if (hasd)
78 break;
79 else
80 hasd = 1;
81 }
82 buf[i++] = *src++;
83 }
84
85 if (BUFSIZ == i || (*src && *(src + 1)))
86 return(0);
87
88 buf[i] = '\0';
89
90 switch (*src) {
070c62a6 91 case 'c':
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92 unit = SCALE_CM;
93 break;
070c62a6 94 case 'i':
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95 unit = SCALE_IN;
96 break;
070c62a6 97 case 'P':
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98 unit = SCALE_PC;
99 break;
070c62a6 100 case 'p':
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101 unit = SCALE_PT;
102 break;
070c62a6 103 case 'f':
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104 unit = SCALE_FS;
105 break;
070c62a6 106 case 'v':
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107 unit = SCALE_VS;
108 break;
070c62a6 109 case 'm':
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110 unit = SCALE_EM;
111 break;
070c62a6 112 case '\0':
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113 if (SCALE_MAX == def)
114 return(0);
115 unit = SCALE_BU;
116 break;
070c62a6 117 case 'u':
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118 unit = SCALE_BU;
119 break;
070c62a6 120 case 'M':
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121 unit = SCALE_MM;
122 break;
070c62a6 123 case 'n':
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124 unit = SCALE_EN;
125 break;
126 default:
127 return(0);
128 }
129
130 /* FIXME: do this in the caller. */
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131 if ((dst->scale = atof(buf)) < 0.0)
132 dst->scale = 0.0;
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133 dst->unit = unit;
134 return(1);
135}
136
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137/*
138 * Calculate the abstract widths and decimal positions of columns in a
139 * table. This routine allocates the columns structures then runs over
140 * all rows and cells in the table. The function pointers in "tbl" are
141 * used for the actual width calculations.
142 */
143void
144tblcalc(struct rofftbl *tbl, const struct tbl_span *sp)
145{
146 const struct tbl_dat *dp;
80387638 147 struct roffcol *col;
36342e81 148 int spans;
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149
150 /*
151 * Allocate the master column specifiers. These will hold the
152 * widths and decimal positions for all cells in the column. It
153 * must be freed and nullified by the caller.
154 */
155
156 assert(NULL == tbl->cols);
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157 tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
158 sizeof(struct roffcol));
80387638 159
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160 for ( ; sp; sp = sp->next) {
161 if (TBL_SPAN_DATA != sp->pos)
162 continue;
36342e81 163 spans = 1;
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164 /*
165 * Account for the data cells in the layout, matching it
166 * to data cells in the data section.
167 */
168 for (dp = sp->first; dp; dp = dp->next) {
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169 /* Do not used spanned cells in the calculation. */
170 if (0 < --spans)
171 continue;
172 spans = dp->spans;
173 if (1 < spans)
174 continue;
60e1e752 175 assert(dp->layout);
80387638 176 col = &tbl->cols[dp->layout->head->ident];
f88b6c16 177 tblcalc_data(tbl, col, sp->opts, dp);
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178 }
179 }
180}
181
182static void
183tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
f88b6c16 184 const struct tbl_opts *opts, const struct tbl_dat *dp)
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185{
186 size_t sz;
187
188 /* Branch down into data sub-types. */
189
190 switch (dp->layout->pos) {
070c62a6 191 case TBL_CELL_HORIZ:
80387638 192 /* FALLTHROUGH */
070c62a6 193 case TBL_CELL_DHORIZ:
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194 sz = (*tbl->len)(1, tbl->arg);
195 if (col->width < sz)
196 col->width = sz;
197 break;
070c62a6 198 case TBL_CELL_LONG:
80387638 199 /* FALLTHROUGH */
070c62a6 200 case TBL_CELL_CENTRE:
80387638 201 /* FALLTHROUGH */
070c62a6 202 case TBL_CELL_LEFT:
80387638 203 /* FALLTHROUGH */
070c62a6 204 case TBL_CELL_RIGHT:
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205 tblcalc_literal(tbl, col, dp);
206 break;
070c62a6 207 case TBL_CELL_NUMBER:
f88b6c16 208 tblcalc_number(tbl, col, opts, dp);
80387638 209 break;
070c62a6 210 case TBL_CELL_DOWN:
60e1e752 211 break;
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212 default:
213 abort();
214 /* NOTREACHED */
215 }
216}
217
218static void
219tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
220 const struct tbl_dat *dp)
221{
36342e81 222 size_t sz;
60e1e752 223 const char *str;
80387638 224
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225 str = dp->string ? dp->string : "";
226 sz = (*tbl->slen)(str, tbl->arg);
227
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228 if (col->width < sz)
229 col->width = sz;
230}
231
232static void
233tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
f88b6c16 234 const struct tbl_opts *opts, const struct tbl_dat *dp)
80387638 235{
070c62a6 236 int i;
80387638 237 size_t sz, psz, ssz, d;
80387638 238 const char *str;
60e1e752 239 char *cp;
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240 char buf[2];
241
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242 /*
243 * First calculate number width and decimal place (last + 1 for
36342e81 244 * non-decimal numbers). If the stored decimal is subsequent to
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245 * ours, make our size longer by that difference
246 * (right-"shifting"); similarly, if ours is subsequent the
247 * stored, then extend the stored size by the difference.
248 * Finally, re-assign the stored values.
249 */
250
60e1e752 251 str = dp->string ? dp->string : "";
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252 sz = (*tbl->slen)(str, tbl->arg);
253
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254 /* FIXME: TBL_DATA_HORIZ et al.? */
255
f88b6c16 256 buf[0] = opts->decimal;
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257 buf[1] = '\0';
258
259 psz = (*tbl->slen)(buf, tbl->arg);
260
f88b6c16 261 if (NULL != (cp = strrchr(str, opts->decimal))) {
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262 buf[1] = '\0';
263 for (ssz = 0, i = 0; cp != &str[i]; i++) {
264 buf[0] = str[i];
265 ssz += (*tbl->slen)(buf, tbl->arg);
266 }
267 d = ssz + psz;
268 } else
269 d = sz + psz;
270
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271 /* Adjust the settings for this column. */
272
273 if (col->decimal > d) {
274 sz += col->decimal - d;
275 d = col->decimal;
276 } else
277 col->width += d - col->decimal;
278
279 if (sz > col->width)
280 col->width = sz;
281 if (d > col->decimal)
282 col->decimal = d;
283}