1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/*
* Path utility functions
*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include "config.h"
#include "mpv_talloc.h"
#include "osdep/io.h"
#include "misc/ctype.h"
#include "misc/path_utils.h"
char *mp_basename(const char *path)
{
char *s;
#if HAVE_DOS_PATHS
if (!mp_is_url(bstr0(path))) {
s = strrchr(path, '\\');
if (s)
path = s + 1;
s = strrchr(path, ':');
if (s)
path = s + 1;
}
#endif
s = strrchr(path, '/');
return s ? s + 1 : (char *)path;
}
struct bstr mp_dirname(const char *path)
{
struct bstr ret = {
(uint8_t *)path, mp_basename(path) - path
};
if (ret.len == 0)
return bstr0(".");
return ret;
}
#if HAVE_DOS_PATHS
static const char mp_path_separators[] = "\\/";
#else
static const char mp_path_separators[] = "/";
#endif
// Mutates path and removes a trailing '/' (or '\' on Windows)
void mp_path_strip_trailing_separator(char *path)
{
size_t len = strlen(path);
if (len > 0 && strchr(mp_path_separators, path[len - 1]))
path[len - 1] = '\0';
}
char *mp_splitext(const char *path, bstr *root)
{
assert(path);
int skip = (*path == '.'); // skip leading dot for "hidden" unix files
const char *split = strrchr(path + skip, '.');
if (!split || !split[1] || strchr(split, '/'))
return NULL;
if (root)
*root = (bstr){(char *)path, split - path};
return (char *)split + 1;
}
bool mp_path_is_absolute(struct bstr path)
{
if (path.len && strchr(mp_path_separators, path.start[0]))
return true;
#if HAVE_DOS_PATHS
// Note: "X:filename" is a path relative to the current working directory
// of drive X, and thus is not an absolute path. It needs to be
// followed by \ or /.
if (path.len >= 3 && path.start[1] == ':' &&
strchr(mp_path_separators, path.start[2]))
return true;
#endif
return false;
}
char *mp_path_join_bstr(void *talloc_ctx, struct bstr p1, struct bstr p2)
{
if (p1.len == 0)
return bstrdup0(talloc_ctx, p2);
if (p2.len == 0)
return bstrdup0(talloc_ctx, p1);
if (mp_path_is_absolute(p2))
return bstrdup0(talloc_ctx, p2);
bool have_separator = strchr(mp_path_separators, p1.start[p1.len - 1]);
#if HAVE_DOS_PATHS
// "X:" only => path relative to "X:" current working directory.
if (p1.len == 2 && p1.start[1] == ':')
have_separator = true;
#endif
return talloc_asprintf(talloc_ctx, "%.*s%s%.*s", BSTR_P(p1),
have_separator ? "" : "/", BSTR_P(p2));
}
char *mp_path_join(void *talloc_ctx, const char *p1, const char *p2)
{
return mp_path_join_bstr(talloc_ctx, bstr0(p1), bstr0(p2));
}
char *mp_getcwd(void *talloc_ctx)
{
char *e_wd = getenv("PWD");
if (e_wd)
return talloc_strdup(talloc_ctx, e_wd);
char *wd = talloc_array(talloc_ctx, char, 20);
while (getcwd(wd, talloc_get_size(wd)) == NULL) {
if (errno != ERANGE) {
talloc_free(wd);
return NULL;
}
wd = talloc_realloc(talloc_ctx, wd, char, talloc_get_size(wd) * 2);
}
return wd;
}
char *mp_normalize_path(void *talloc_ctx, const char *path)
{
if (mp_is_url(bstr0(path)))
return talloc_strdup(talloc_ctx, path);
return mp_path_join(talloc_ctx, mp_getcwd(talloc_ctx), path);
}
bool mp_path_exists(const char *path)
{
struct stat st;
return path && stat(path, &st) == 0;
}
bool mp_path_isdir(const char *path)
{
struct stat st;
return stat(path, &st) == 0 && S_ISDIR(st.st_mode);
}
// Return false if it's considered a normal local filesystem path.
bool mp_is_url(bstr path)
{
int proto = bstr_find0(path, "://");
if (proto < 1)
return false;
// Per RFC3986, the first character of the protocol must be alphabetic.
// The rest must be alphanumeric plus -, + and .
for (int i = 0; i < proto; i++) {
unsigned char c = path.start[i];
if ((i == 0 && !mp_isalpha(c)) ||
(!mp_isalnum(c) && c != '.' && c != '-' && c != '+'))
{
return false;
}
}
return true;
}
// Return the protocol part of path, e.g. "http" if path is "http://...".
// On success, out_url (if not NULL) is set to the part after the "://".
bstr mp_split_proto(bstr path, bstr *out_url)
{
if (!mp_is_url(path))
return (bstr){0};
bstr r;
bstr_split_tok(path, "://", &r, out_url ? out_url : &(bstr){0});
return r;
}
void mp_mkdirp(const char *dir)
{
char *path = talloc_strdup(NULL, dir);
char *cdir = path + 1;
while (cdir) {
cdir = strchr(cdir, '/');
if (cdir)
*cdir = 0;
mkdir(path, 0700);
if (cdir)
*cdir++ = '/';
}
talloc_free(path);
}
|
