The open source OpenXR runtime
u/file: Add file helpers
authored by
Jakob Bornecrantz
and committed by
Jakob Bornecrantz
b5dd07f2
c02f89dc
+154
+1
doc/changes/aux/mr.266.1.md
+1
doc/changes/aux/mr.266.1.md
···
1
+
u/file: Add file helpers to load files from config directory.
+2
src/xrt/auxiliary/CMakeLists.txt
+2
src/xrt/auxiliary/CMakeLists.txt
+2
src/xrt/auxiliary/meson.build
+2
src/xrt/auxiliary/meson.build
+113
src/xrt/auxiliary/util/u_file.c
+113
src/xrt/auxiliary/util/u_file.c
···
1
+
// Copyright 2019-2020, Collabora, Ltd.
2
+
// SPDX-License-Identifier: BSL-1.0
3
+
/*!
4
+
* @file
5
+
* @brief Very simple file opening functions.
6
+
* @author Jakob Bornecrantz <jakob@collabora.com>
7
+
* @author Pete Black <pblack@collabora.com>
8
+
* @ingroup aux_util
9
+
*/
10
+
11
+
#include "util/u_file.h"
12
+
13
+
#include <errno.h>
14
+
#include <stdio.h>
15
+
#include <stdlib.h>
16
+
#include <string.h>
17
+
#include <sys/stat.h>
18
+
#include <linux/limits.h>
19
+
20
+
21
+
static int
22
+
mkpath(const char *path)
23
+
{
24
+
char tmp[PATH_MAX];
25
+
char *p = NULL;
26
+
size_t len;
27
+
28
+
snprintf(tmp, sizeof(tmp), "%s", path);
29
+
len = strlen(tmp) - 1;
30
+
if (tmp[len] == '/') {
31
+
tmp[len] = 0;
32
+
}
33
+
34
+
for (p = tmp + 1; *p; p++) {
35
+
if (*p == '/') {
36
+
*p = 0;
37
+
if (mkdir(tmp, S_IRWXU) < 0 && errno != EEXIST) {
38
+
return -1;
39
+
}
40
+
*p = '/';
41
+
}
42
+
}
43
+
44
+
if (mkdir(tmp, S_IRWXU) < 0 && errno != EEXIST) {
45
+
return -1;
46
+
}
47
+
48
+
return 0;
49
+
}
50
+
51
+
ssize_t
52
+
u_file_get_config_dir(char *out_path, size_t out_path_size)
53
+
{
54
+
const char *xgd_home = getenv("XDG_CONFIG_HOME");
55
+
const char *home = getenv("HOME");
56
+
if (xgd_home != NULL) {
57
+
return snprintf(out_path, out_path_size, "%s/monado", xgd_home);
58
+
} else if (home != NULL) {
59
+
return snprintf(out_path, out_path_size, "%s/.config/monado",
60
+
home);
61
+
} else {
62
+
fprintf(stderr,
63
+
"Could not create config file no $HOME or "
64
+
"$XDG_CONFIG_HOME env variables defined\n");
65
+
return -1;
66
+
}
67
+
}
68
+
69
+
ssize_t
70
+
u_file_get_path_in_config_dir(const char *filename,
71
+
char *out_path,
72
+
size_t out_path_size)
73
+
{
74
+
char tmp[PATH_MAX];
75
+
ssize_t i = u_file_get_config_dir(tmp, sizeof(tmp));
76
+
if (i <= 0) {
77
+
return -1;
78
+
}
79
+
80
+
return snprintf(out_path, out_path_size, "%s/%s", tmp, filename);
81
+
}
82
+
83
+
FILE *
84
+
u_file_open_file_in_config_dir(const char *filename, const char *mode)
85
+
{
86
+
char tmp[PATH_MAX];
87
+
ssize_t i = u_file_get_config_dir(tmp, sizeof(tmp));
88
+
if (i <= 0) {
89
+
return NULL;
90
+
}
91
+
92
+
char file_str[PATH_MAX + 15];
93
+
i = snprintf(file_str, sizeof(file_str), "%s/%s", tmp, filename);
94
+
if (i <= 0) {
95
+
return NULL;
96
+
}
97
+
98
+
FILE *file = fopen(file_str, mode);
99
+
if (file != NULL) {
100
+
return file;
101
+
}
102
+
103
+
// Try creating the path.
104
+
mkpath(tmp);
105
+
106
+
file = fopen(file_str, mode);
107
+
if (file == NULL) {
108
+
fprintf(stderr, "Could not open or create file '%s'\n",
109
+
file_str);
110
+
}
111
+
112
+
return file;
113
+
}
+36
src/xrt/auxiliary/util/u_file.h
+36
src/xrt/auxiliary/util/u_file.h
···
1
+
// Copyright 2019-2020, Collabora, Ltd.
2
+
// SPDX-License-Identifier: BSL-1.0
3
+
/*!
4
+
* @file
5
+
* @brief Very simple file opening functions.
6
+
* @author Jakob Bornecrantz <jakob@collabora.com>
7
+
* @ingroup aux_util
8
+
*/
9
+
10
+
#pragma once
11
+
12
+
#include "xrt/xrt_compiler.h"
13
+
14
+
#include <stdio.h>
15
+
16
+
17
+
#ifdef __cplusplus
18
+
extern "C" {
19
+
#endif
20
+
21
+
22
+
ssize_t
23
+
u_file_get_config_dir(char *out_path, size_t out_path_size);
24
+
25
+
ssize_t
26
+
u_file_get_path_in_config_dir(const char *suffix,
27
+
char *out_path,
28
+
size_t out_path_size);
29
+
30
+
FILE *
31
+
u_file_open_file_in_config_dir(const char *filename, const char *mode);
32
+
33
+
34
+
#ifdef __cplusplus
35
+
}
36
+
#endif