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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/mandoc/term_tab.c	Lines:	48	49	98.0 %
Date:	2017-11-13	Branches:	29	32	90.6 %


/*	$OpenBSD: term_tab.c,v 1.4 2017/06/17 14:55:02 schwarze Exp $ */
/*
 * Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <sys/types.h>

#include <stddef.h>

#include "mandoc_aux.h"
#include "out.h"
#include "term.h"

struct tablist {
	size_t	*t;	/* Allocated array of tab positions. */
	size_t	 s;	/* Allocated number of positions. */
	size_t	 n;	/* Currently used number of positions. */
};

static struct {
	struct tablist	 a;	/* All tab positions for lookup. */
	struct tablist	 p;	/* Periodic tab positions to add. */
	size_t		 d;	/* Default tab width in units of n. */
} tabs;


void
term_tab_set(const struct termp *p, const char *arg)
{
	static int	 recording_period;

	struct roffsu	 su;
	struct tablist	*tl;
	size_t		 pos;
	int		 add;

	/* Special arguments: clear all tabs or switch lists. */

	if (arg == NULL) {
		tabs.a.n = tabs.p.n = 0;
		recording_period = 0;
		if (tabs.d == 0) {
			a2roffsu(".8i", &su, SCALE_IN);
			tabs.d = term_hen(p, &su);
		}
		return;
	}
	if (arg[0] == 'T' && arg[1] == '\0') {
		recording_period = 1;
		return;
	}

	/* Parse the sign, the number, and the unit. */

	if (*arg == '+') {
		add = 1;
		arg++;
	} else
		add = 0;
	if (a2roffsu(arg, &su, SCALE_EM) == NULL)
		return;

	/* Select the list, and extend it if it is full. */

	tl = recording_period ? &tabs.p : &tabs.a;
	if (tl->n >= tl->s) {
		tl->s += 8;
		tl->t = mandoc_reallocarray(tl->t, tl->s, sizeof(*tl->t));
	}

	/* Append the new position. */

	pos = term_hen(p, &su);
	tl->t[tl->n] = pos;
	if (add && tl->n)
		tl->t[tl->n] += tl->t[tl->n - 1];
	tl->n++;
}

/*
 * Simplified version without a parser,
 * never incremental, never periodic, for use by tbl(7).
 */
void
term_tab_iset(size_t inc)
{
	if (tabs.a.n >= tabs.a.s) {
		tabs.a.s += 8;
		tabs.a.t = mandoc_reallocarray(tabs.a.t, tabs.a.s,
		    sizeof(*tabs.a.t));
	}
	tabs.a.t[tabs.a.n++] = inc;
}

size_t
term_tab_next(size_t prev)
{
	size_t	 i, j;

	for (i = 0;; i++) {
		if (i == tabs.a.n) {
			if (tabs.p.n == 0)
				return prev;
			tabs.a.n += tabs.p.n;
			if (tabs.a.s < tabs.a.n) {
				tabs.a.s = tabs.a.n;
				tabs.a.t = mandoc_reallocarray(tabs.a.t,
				    tabs.a.s, sizeof(*tabs.a.t));
			}
			for (j = 0; j < tabs.p.n; j++)
				tabs.a.t[i + j] = tabs.p.t[j] +
				    (i ? tabs.a.t[i - 1] : 0);
		}
		if (prev < tabs.a.t[i])
			return tabs.a.t[i];
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: term_tab.c,v 1.4 2017/06/17 14:55:02 schwarze Exp $ */
2			/*
3			* Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
4			*
5			* Permission to use, copy, modify, and distribute this software for any
6			* purpose with or without fee is hereby granted, provided that the above
7			* copyright notice and this permission notice appear in all copies.
8			*
9			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16			*/
17			#include <sys/types.h>
18
19			#include <stddef.h>
20
21			#include "mandoc_aux.h"
22			#include "out.h"
23			#include "term.h"
24
25			struct tablist {
26			size_t t; / Allocated array of tab positions. */
27			size_t s; /* Allocated number of positions. */
28			size_t n; /* Currently used number of positions. */
29			};
30
31			static struct {
32			struct tablist a; /* All tab positions for lookup. */
33			struct tablist p; /* Periodic tab positions to add. */
34			size_t d; /* Default tab width in units of n. */
35			} tabs;
36
37
38			void
39			term_tab_set(const struct termp p, const char arg)
40			{
41			static int recording_period;
42
43		31612	struct roffsu su;
44			struct tablist *tl;
45			size_t pos;
46			int add;
47
48			/* Special arguments: clear all tabs or switch lists. */
49
50	✓✓	15806	if (arg == NULL) {
51		6735	tabs.a.n = tabs.p.n = 0;
52		6735	recording_period = 0;
53	✓✓	6735	if (tabs.d == 0) {
54		2150	a2roffsu(".8i", &su, SCALE_IN);
55		2150	tabs.d = term_hen(p, &su);
56		2150	}
57		6735	return;
58			}
59	✓✓✓✗	13584	if (arg[0] == 'T' && arg[1] == '\0') {
60		4513	recording_period = 1;
61		4513	return;
62			}
63
64			/* Parse the sign, the number, and the unit. */
65
66	✓✓	4558	if (*arg == '+') {
67			add = 1;
68		18	arg++;
69		18	} else
70			add = 0;
71	✗✓	4558	if (a2roffsu(arg, &su, SCALE_EM) == NULL)
72			return;
73
74			/* Select the list, and extend it if it is full. */
75
76		4558	tl = recording_period ? &tabs.p : &tabs.a;
77	✓✓	4558	if (tl->n >= tl->s) {
78		2150	tl->s += 8;
79		2150	tl->t = mandoc_reallocarray(tl->t, tl->s, sizeof(*tl->t));
80		2150	}
81
82			/* Append the new position. */
83
84		4558	pos = term_hen(p, &su);
85		4558	tl->t[tl->n] = pos;
86	✓✓✓✗	4576	if (add && tl->n)
87		18	tl->t[tl->n] += tl->t[tl->n - 1];
88		4558	tl->n++;
89		20364	}
90
91			/*
92			* Simplified version without a parser,
93			* never incremental, never periodic, for use by tbl(7).
94			*/
95			void
96			term_tab_iset(size_t inc)
97			{
98	✓✓	11710	if (tabs.a.n >= tabs.a.s) {
99		95	tabs.a.s += 8;
100		95	tabs.a.t = mandoc_reallocarray(tabs.a.t, tabs.a.s,
101			sizeof(*tabs.a.t));
102		95	}
103		5855	tabs.a.t[tabs.a.n++] = inc;
104		5855	}
105
106			size_t
107			term_tab_next(size_t prev)
108			{
109			size_t i, j;
110
111		8231	for (i = 0;; i++) {
112	✓✓	5127	if (i == tabs.a.n) {
113	✓✓	314	if (tabs.p.n == 0)
114		21	return prev;
115		293	tabs.a.n += tabs.p.n;
116	✓✓	293	if (tabs.a.s < tabs.a.n) {
117		254	tabs.a.s = tabs.a.n;
118		254	tabs.a.t = mandoc_reallocarray(tabs.a.t,
119			tabs.a.s, sizeof(*tabs.a.t));
120		254	}
121	✓✓	1208	for (j = 0; j < tabs.p.n; j++)
122		622	tabs.a.t[i + j] = tabs.p.t[j] +
123	✓✓	866	(i ? tabs.a.t[i - 1] : 0);
124			}
125	✓✓	5106	if (prev < tabs.a.t[i])
126		3083	return tabs.a.t[i];
127			}
128		3104	}