1 /*        Id: out.h,v 1.33 2018/08/18 20:18:14 schwarze Exp  */
2 /*
3  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4  * Copyright (c) 2014, 2017, 2018 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 
19 enum      roffscale {
20           SCALE_CM, /* centimeters (c) */
21           SCALE_IN, /* inches (i) */
22           SCALE_PC, /* pica (P) */
23           SCALE_PT, /* points (p) */
24           SCALE_EM, /* ems (m) */
25           SCALE_MM, /* mini-ems (M) */
26           SCALE_EN, /* ens (n) */
27           SCALE_BU, /* default horizontal (u) */
28           SCALE_VS, /* default vertical (v) */
29           SCALE_FS, /* syn. for u (f) */
30           SCALE_MAX
31 };
32 
33 struct    roffcol {
34           size_t               width; /* width of cell */
35           size_t               nwidth; /* max. width of number in cell */
36           size_t               decimal; /* decimal position in cell */
37           size_t               spacing; /* spacing after the column */
38           int                  flags; /* layout flags, see tbl_cell */
39 };
40 
41 struct    roffsu {
42           enum roffscale        unit;
43           double                scale;
44 };
45 
46 typedef   size_t    (*tbl_sulen)(const struct roffsu *, void *);
47 typedef   size_t    (*tbl_strlen)(const char *, void *);
48 typedef   size_t    (*tbl_len)(size_t, void *);
49 
50 struct    rofftbl {
51           tbl_sulen  sulen; /* calculate scaling unit length */
52           tbl_strlen           slen; /* calculate string length */
53           tbl_len              len; /* produce width of empty space */
54           struct roffcol      *cols; /* master column specifiers */
55           void                *arg; /* passed to sulen, slen, and len */
56 };
57 
58 #define   SCALE_HS_INIT(p, v) \
59           do { (p)->unit = SCALE_EN; \
60                (p)->scale = (v); } \
61           while (/* CONSTCOND */ 0)
62 
63 
64 struct    tbl_span;
65 
66 const char           *a2roffsu(const char *, struct roffsu *, enum roffscale);
67 void                  tblcalc(struct rofftbl *tbl,
68                               const struct tbl_span *, size_t, size_t);
69