FFmpeg
avio_list_dir.c
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1 /*
2  * Copyright (c) 2014 Lukasz Marek
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a copy
5  * of this software and associated documentation files (the "Software"), to deal
6  * in the Software without restriction, including without limitation the rights
7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8  * copies of the Software, and to permit persons to whom the Software is
9  * furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20  * THE SOFTWARE.
21  */
22 
23 #include <libavcodec/avcodec.h>
24 #include <libavformat/avformat.h>
25 #include <libavformat/avio.h>
26 
27 static const char *type_string(int type)
28 {
29  switch (type) {
31  return "<DIR>";
32  case AVIO_ENTRY_FILE:
33  return "<FILE>";
35  return "<BLOCK DEVICE>";
37  return "<CHARACTER DEVICE>";
39  return "<PIPE>";
41  return "<LINK>";
42  case AVIO_ENTRY_SOCKET:
43  return "<SOCKET>";
44  case AVIO_ENTRY_SERVER:
45  return "<SERVER>";
46  case AVIO_ENTRY_SHARE:
47  return "<SHARE>";
49  return "<WORKGROUP>";
50  case AVIO_ENTRY_UNKNOWN:
51  default:
52  break;
53  }
54  return "<UNKNOWN>";
55 }
56 
57 static int list_op(const char *input_dir)
58 {
59  AVIODirEntry *entry = NULL;
61  int cnt, ret;
62  char filemode[4], uid_and_gid[20];
63 
64  if ((ret = avio_open_dir(&ctx, input_dir, NULL)) < 0) {
65  av_log(NULL, AV_LOG_ERROR, "Cannot open directory: %s.\n", av_err2str(ret));
66  goto fail;
67  }
68 
69  cnt = 0;
70  for (;;) {
71  if ((ret = avio_read_dir(ctx, &entry)) < 0) {
72  av_log(NULL, AV_LOG_ERROR, "Cannot list directory: %s.\n", av_err2str(ret));
73  goto fail;
74  }
75  if (!entry)
76  break;
77  if (entry->filemode == -1) {
78  snprintf(filemode, 4, "???");
79  } else {
80  snprintf(filemode, 4, "%3"PRIo64, entry->filemode);
81  }
82  snprintf(uid_and_gid, 20, "%"PRId64"(%"PRId64")", entry->user_id, entry->group_id);
83  if (cnt == 0)
84  av_log(NULL, AV_LOG_INFO, "%-9s %12s %30s %10s %s %16s %16s %16s\n",
85  "TYPE", "SIZE", "NAME", "UID(GID)", "UGO", "MODIFIED",
86  "ACCESSED", "STATUS_CHANGED");
87  av_log(NULL, AV_LOG_INFO, "%-9s %12"PRId64" %30s %10s %s %16"PRId64" %16"PRId64" %16"PRId64"\n",
88  type_string(entry->type),
89  entry->size,
90  entry->name,
91  uid_and_gid,
92  filemode,
94  entry->access_timestamp,
97  cnt++;
98  };
99 
100  fail:
101  avio_close_dir(&ctx);
102  return ret;
103 }
104 
105 static void usage(const char *program_name)
106 {
107  fprintf(stderr, "usage: %s input_dir\n"
108  "API example program to show how to list files in directory "
109  "accessed through AVIOContext.\n", program_name);
110 }
111 
112 int main(int argc, char *argv[])
113 {
114  int ret;
115 
117 
118  if (argc < 2) {
119  usage(argv[0]);
120  return 1;
121  }
122 
124 
125  ret = list_op(argv[1]);
126 
128 
129  return ret < 0 ? 1 : 0;
130 }
#define NULL
Definition: coverity.c:32
Buffered I/O operations.
int64_t filemode
Unix file mode, -1 if unknown.
Definition: avio.h:100
void av_log_set_level(int level)
Set the log level.
Definition: log.c:440
Describes single entry of the directory.
Definition: avio.h:86
GLint GLenum type
Definition: opengl_enc.c:104
int64_t modification_timestamp
Time of last modification in microseconds since unix epoch, -1 if unknown.
Definition: avio.h:92
static int list_op(const char *input_dir)
Definition: avio_list_dir.c:57
int avio_read_dir(AVIODirContext *s, AVIODirEntry **next)
Get next directory entry.
Definition: avio.c:574
int avformat_network_init(void)
Do global initialization of network libraries.
Definition: utils.c:5049
#define av_log(a,...)
char * name
Filename.
Definition: avio.h:87
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define fail()
Definition: checkasm.h:123
void avio_free_directory_entry(AVIODirEntry **entry)
Free entry allocated by avio_read_dir().
Definition: avio.c:602
int64_t access_timestamp
Time of last access in microseconds since unix epoch, -1 if unknown.
Definition: avio.h:94
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
AVFormatContext * ctx
Definition: movenc.c:48
int main(int argc, char *argv[])
int64_t size
File size in bytes, -1 if unknown.
Definition: avio.h:91
int avformat_network_deinit(void)
Undo the initialization done by avformat_network_init.
Definition: utils.c:5061
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
Libavcodec external API header.
int type
Type of the entry.
Definition: avio.h:88
int avio_open_dir(AVIODirContext **s, const char *url, AVDictionary **options)
Open directory for reading.
Definition: avio.c:536
int64_t group_id
Group ID of owner, -1 if unknown.
Definition: avio.h:99
static const char * type_string(int type)
Definition: avio_list_dir.c:27
#define snprintf
Definition: snprintf.h:34
Main libavformat public API header.
int64_t status_change_timestamp
Time of last status change in microseconds since unix epoch, -1 if unknown.
Definition: avio.h:96
static void usage(const char *program_name)
int avio_close_dir(AVIODirContext **s)
Close directory.
Definition: avio.c:587
int64_t user_id
User ID of owner, -1 if unknown.
Definition: avio.h:98
const char program_name[]
program name, defined by the program for show_version().
Definition: ffmpeg.c:109