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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/tmux/arguments.c	Lines:	15	91	16.5 %
Date:	2017-11-07	Branches:	4	208	1.9 %


/* $OpenBSD: arguments.c,v 1.20 2017/08/23 09:14:21 nicm Exp $ */

/*
 * Copyright (c) 2010 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * 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 MIND, 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 <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>

#include "tmux.h"

/*
 * Manipulate command arguments.
 */

struct args_entry {
	u_char			 flag;
	char			*value;
	RB_ENTRY(args_entry)	 entry;
};

static struct args_entry	*args_find(struct args *, u_char);

static int	args_cmp(struct args_entry *, struct args_entry *);
RB_GENERATE_STATIC(args_tree, args_entry, entry, args_cmp);

/* Arguments tree comparison function. */
static int
args_cmp(struct args_entry *a1, struct args_entry *a2)
{
	return (a1->flag - a2->flag);
}

/* Find a flag in the arguments tree. */
static struct args_entry *
args_find(struct args *args, u_char ch)
{
	struct args_entry	entry;

	entry.flag = ch;
	return (RB_FIND(args_tree, &args->tree, &entry));
}

/* Parse an argv and argc into a new argument set. */
struct args *
args_parse(const char *template, int argc, char **argv)
{
	struct args	*args;
	int		 opt;

	args = xcalloc(1, sizeof *args);

	optreset = 1;
	optind = 1;

	while ((opt = getopt(argc, argv, template)) != -1) {
		if (opt < 0)
			continue;
		if (opt == '?' || strchr(template, opt) == NULL) {
			args_free(args);
			return (NULL);
		}
		args_set(args, opt, optarg);
	}
	argc -= optind;
	argv += optind;

	args->argc = argc;
	args->argv = cmd_copy_argv(argc, argv);

	return (args);
}

/* Free an arguments set. */
void
args_free(struct args *args)
{
	struct args_entry	*entry;
	struct args_entry	*entry1;

	cmd_free_argv(args->argc, args->argv);

	RB_FOREACH_SAFE(entry, args_tree, &args->tree, entry1) {
		RB_REMOVE(args_tree, &args->tree, entry);
		free(entry->value);
		free(entry);
	}

	free(args);
}

/* Add to string. */
static void printflike(3, 4)
args_print_add(char **buf, size_t *len, const char *fmt, ...)
{
	va_list  ap;
	char	*s;
	size_t	 slen;

	va_start(ap, fmt);
	slen = xvasprintf(&s, fmt, ap);
	va_end(ap);

	*len += slen;
	*buf = xrealloc(*buf, *len);

	strlcat(*buf, s, *len);
	free(s);
}

/* Print a set of arguments. */
char *
args_print(struct args *args)
{
	size_t		 	 len;
	char			*buf, *escaped;
	int			 i, flags;
	struct args_entry	*entry;
	static const char	 quoted[] = " #\"';$";

	len = 1;
	buf = xcalloc(1, len);

	/* Process the flags first. */
	RB_FOREACH(entry, args_tree, &args->tree) {
		if (entry->value != NULL)
			continue;

		if (*buf == '\0')
			args_print_add(&buf, &len, "-");
		args_print_add(&buf, &len, "%c", entry->flag);
	}

	/* Then the flags with arguments. */
	RB_FOREACH(entry, args_tree, &args->tree) {
		if (entry->value == NULL)
			continue;

		if (*buf != '\0')
			args_print_add(&buf, &len, " -%c ", entry->flag);
		else
			args_print_add(&buf, &len, "-%c ", entry->flag);

		flags = VIS_OCTAL|VIS_TAB|VIS_NL;
		if (entry->value[strcspn(entry->value, quoted)] != '\0')
			flags |= VIS_DQ;
		utf8_stravis(&escaped, entry->value, flags);
		if (flags & VIS_DQ)
			args_print_add(&buf, &len, "\"%s\"", escaped);
		else
			args_print_add(&buf, &len, "%s", escaped);
		free(escaped);
	}

	/* And finally the argument vector. */
	for (i = 0; i < args->argc; i++) {
		if (*buf != '\0')
			args_print_add(&buf, &len, " ");

		flags = VIS_OCTAL|VIS_TAB|VIS_NL;
		if (args->argv[i][strcspn(args->argv[i], quoted)] != '\0')
			flags |= VIS_DQ;
		utf8_stravis(&escaped, args->argv[i], flags);
		if (flags & VIS_DQ)
			args_print_add(&buf, &len, "\"%s\"", escaped);
		else
			args_print_add(&buf, &len, "%s", escaped);
		free(escaped);
	}

	return (buf);
}

/* Return if an argument is present. */
int
args_has(struct args *args, u_char ch)
{
	return (args_find(args, ch) != NULL);
}

/* Set argument value in the arguments tree. */
void
args_set(struct args *args, u_char ch, const char *value)
{
	struct args_entry	*entry;

	/* Replace existing argument. */
	if ((entry = args_find(args, ch)) != NULL) {
		free(entry->value);
		entry->value = NULL;
	} else {
		entry = xcalloc(1, sizeof *entry);
		entry->flag = ch;
		RB_INSERT(args_tree, &args->tree, entry);
	}

	if (value != NULL)
		entry->value = xstrdup(value);
}

/* Get argument value. Will be NULL if it isn't present. */
const char *
args_get(struct args *args, u_char ch)
{
	struct args_entry	*entry;

	if ((entry = args_find(args, ch)) == NULL)
		return (NULL);
	return (entry->value);
}

/* Convert an argument value to a number. */
long long
args_strtonum(struct args *args, u_char ch, long long minval, long long maxval,
    char **cause)
{
	const char		*errstr;
	long long 	 	 ll;
	struct args_entry	*entry;

	if ((entry = args_find(args, ch)) == NULL) {
		*cause = xstrdup("missing");
		return (0);
	}

	ll = strtonum(entry->value, minval, maxval, &errstr);
	if (errstr != NULL) {
		*cause = xstrdup(errstr);
		return (0);
	}

	*cause = NULL;
	return (ll);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: arguments.c,v 1.20 2017/08/23 09:14:21 nicm Exp $ */
2
3			/*
4			* Copyright (c) 2010 Nicholas Marriott <nicholas.marriott@gmail.com>
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 MIND, USE, DATA OR PROFITS, WHETHER
15			* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16			* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <sys/types.h>
20
21			#include <stdlib.h>
22			#include <string.h>
23			#include <unistd.h>
24			#include <vis.h>
25
26			#include "tmux.h"
27
28			/*
29			* Manipulate command arguments.
30			*/
31
32			struct args_entry {
33			u_char flag;
34			char *value;
35			RB_ENTRY(args_entry) entry;
36			};
37
38			static struct args_entry args_find(struct args , u_char);
39
40			static int args_cmp(struct args_entry , struct args_entry );
41	✗✓✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗✗✗ ✗✗	16	RB_GENERATE_STATIC(args_tree, args_entry, entry, args_cmp);
42
43			/* Arguments tree comparison function. */
44			static int
45			args_cmp(struct args_entry a1, struct args_entry a2)
46			{
47			return (a1->flag - a2->flag);
48			}
49
50			/* Find a flag in the arguments tree. */
51			static struct args_entry *
52			args_find(struct args *args, u_char ch)
53			{
54			struct args_entry entry;
55
56			entry.flag = ch;
57			return (RB_FIND(args_tree, &args->tree, &entry));
58			}
59
60			/* Parse an argv and argc into a new argument set. */
61			struct args *
62			args_parse(const char template, int argc, char *argv)
63			{
64			struct args *args;
65			int opt;
66
67		8	args = xcalloc(1, sizeof *args);
68
69		4	optreset = 1;
70		4	optind = 1;
71
72	✗✓	8	while ((opt = getopt(argc, argv, template)) != -1) {
73			if (opt < 0)
74			continue;
75			if (opt == '?' \|\| strchr(template, opt) == NULL) {
76			args_free(args);
77			return (NULL);
78			}
79			args_set(args, opt, optarg);
80			}
81		4	argc -= optind;
82		4	argv += optind;
83
84		4	args->argc = argc;
85		4	args->argv = cmd_copy_argv(argc, argv);
86
87		4	return (args);
88		4	}
89
90			/* Free an arguments set. */
91			void
92			args_free(struct args *args)
93			{
94			struct args_entry *entry;
95			struct args_entry *entry1;
96
97		8	cmd_free_argv(args->argc, args->argv);
98
99	✗✓✗✓	12	RB_FOREACH_SAFE(entry, args_tree, &args->tree, entry1) {
100			RB_REMOVE(args_tree, &args->tree, entry);
101			free(entry->value);
102			free(entry);
103			}
104
105		4	free(args);
106		4	}
107
108			/* Add to string. */
109			static void printflike(3, 4)
110			args_print_add(char *buf, size_t len, const char *fmt, ...)
111			{
112			va_list ap;
113			char *s;
114			size_t slen;
115
116			va_start(ap, fmt);
117			slen = xvasprintf(&s, fmt, ap);
118			va_end(ap);
119
120			*len += slen;
121			buf = xrealloc(buf, *len);
122
123			strlcat(buf, s, len);
124			free(s);
125			}
126
127			/* Print a set of arguments. */
128			char *
129			args_print(struct args *args)
130			{
131			size_t len;
132			char buf, escaped;
133			int i, flags;
134			struct args_entry *entry;
135			static const char quoted[] = " #\"';$";
136
137			len = 1;
138			buf = xcalloc(1, len);
139
140			/* Process the flags first. */
141			RB_FOREACH(entry, args_tree, &args->tree) {
142			if (entry->value != NULL)
143			continue;
144
145			if (*buf == '\0')
146			args_print_add(&buf, &len, "-");
147			args_print_add(&buf, &len, "%c", entry->flag);
148			}
149
150			/* Then the flags with arguments. */
151			RB_FOREACH(entry, args_tree, &args->tree) {
152			if (entry->value == NULL)
153			continue;
154
155			if (*buf != '\0')
156			args_print_add(&buf, &len, " -%c ", entry->flag);
157			else
158			args_print_add(&buf, &len, "-%c ", entry->flag);
159
160			flags = VIS_OCTAL\|VIS_TAB\|VIS_NL;
161			if (entry->value[strcspn(entry->value, quoted)] != '\0')
162			flags \|= VIS_DQ;
163			utf8_stravis(&escaped, entry->value, flags);
164			if (flags & VIS_DQ)
165			args_print_add(&buf, &len, "\"%s\"", escaped);
166			else
167			args_print_add(&buf, &len, "%s", escaped);
168			free(escaped);
169			}
170
171			/* And finally the argument vector. */
172			for (i = 0; i < args->argc; i++) {
173			if (*buf != '\0')
174			args_print_add(&buf, &len, " ");
175
176			flags = VIS_OCTAL\|VIS_TAB\|VIS_NL;
177			if (args->argv[i][strcspn(args->argv[i], quoted)] != '\0')
178			flags \|= VIS_DQ;
179			utf8_stravis(&escaped, args->argv[i], flags);
180			if (flags & VIS_DQ)
181			args_print_add(&buf, &len, "\"%s\"", escaped);
182			else
183			args_print_add(&buf, &len, "%s", escaped);
184			free(escaped);
185			}
186
187			return (buf);
188			}
189
190			/* Return if an argument is present. */
191			int
192			args_has(struct args *args, u_char ch)
193			{
194			return (args_find(args, ch) != NULL);
195			}
196
197			/* Set argument value in the arguments tree. */
198			void
199			args_set(struct args args, u_char ch, const char value)
200			{
201			struct args_entry *entry;
202
203			/* Replace existing argument. */
204			if ((entry = args_find(args, ch)) != NULL) {
205			free(entry->value);
206			entry->value = NULL;
207			} else {
208			entry = xcalloc(1, sizeof *entry);
209			entry->flag = ch;
210			RB_INSERT(args_tree, &args->tree, entry);
211			}
212
213			if (value != NULL)
214			entry->value = xstrdup(value);
215			}
216
217			/* Get argument value. Will be NULL if it isn't present. */
218			const char *
219			args_get(struct args *args, u_char ch)
220			{
221			struct args_entry *entry;
222
223			if ((entry = args_find(args, ch)) == NULL)
224			return (NULL);
225			return (entry->value);
226			}
227
228			/* Convert an argument value to a number. */
229			long long
230			args_strtonum(struct args *args, u_char ch, long long minval, long long maxval,
231			char **cause)
232			{
233			const char *errstr;
234			long long ll;
235			struct args_entry *entry;
236
237			if ((entry = args_find(args, ch)) == NULL) {
238			*cause = xstrdup("missing");
239			return (0);
240			}
241
242			ll = strtonum(entry->value, minval, maxval, &errstr);
243			if (errstr != NULL) {
244			*cause = xstrdup(errstr);
245			return (0);
246			}
247
248			*cause = NULL;
249			return (ll);
250			}