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
|
/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file src/util.cc
* @brief Utility methods.
*/
#include <stdexcept>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <boost/filesystem.hpp>
#include <openssl/sha.h>
#include "KM_util.h"
#include "KM_fileio.h"
#include "AS_DCP.h"
#include "util.h"
#include "exceptions.h"
using namespace std;
using namespace boost;
string
libdcp::make_uuid ()
{
char buffer[64];
Kumu::UUID id;
Kumu::GenRandomValue (id);
id.EncodeHex (buffer, 64);
return string (buffer);
}
string
libdcp::make_digest (string filename, sigc::signal1<void, float>* progress)
{
int const file_size = filesystem::file_size (filename);
Kumu::FileReader reader;
if (ASDCP_FAILURE (reader.OpenRead (filename.c_str ()))) {
throw FileError ("could not open file to compute digest", filename);
}
SHA_CTX sha;
SHA1_Init (&sha);
Kumu::ByteString read_buffer (65536);
int done = 0;
while (1) {
ui32_t read = 0;
Kumu::Result_t r = reader.Read (read_buffer.Data(), read_buffer.Capacity(), &read);
if (r == Kumu::RESULT_ENDOFFILE) {
break;
} else if (ASDCP_FAILURE (r)) {
throw FileError ("could not read file to compute digest", filename);
}
SHA1_Update (&sha, read_buffer.Data(), read);
done += read;
if (progress) {
(*progress) (0.5 + (0.5 * done / file_size));
}
}
byte_t byte_buffer[20];
SHA1_Final (byte_buffer, &sha);
stringstream s;
char digest[64];
return Kumu::base64encode (byte_buffer, 20, digest, 64);
}
string
libdcp::content_type_to_string (ContentType type)
{
switch (type) {
case FEATURE:
return "feature";
case SHORT:
return "short";
case TRAILER:
return "trailer";
case TEST:
return "test";
case TRANSITIONAL:
return "transitional";
case RATING:
return "rating";
case TEASER:
return "teaser";
case POLICY:
return "policy";
case PUBLIC_SERVICE_ANNOUNCEMENT:
return "psa";
case ADVERTISEMENT:
return "advertisement";
}
assert (false);
}
bool
libdcp::ends_with (string big, string little)
{
if (little.size() > big.size()) {
return false;
}
return big.compare (big.length() - little.length(), little.length(), little) == 0;
}
|
