2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * @brief Utility methods.
28 #include <boost/filesystem.hpp>
29 #include <openssl/sha.h>
31 #include "KM_fileio.h"
34 #include "exceptions.h"
38 using namespace boost;
45 Kumu::GenRandomValue (id);
46 id.EncodeHex (buffer, 64);
47 return string (buffer);
51 libdcp::make_digest (string filename, sigc::signal1<void, float>* progress)
53 int const file_size = filesystem::file_size (filename);
55 Kumu::FileReader reader;
56 if (ASDCP_FAILURE (reader.OpenRead (filename.c_str ()))) {
57 throw FileError ("could not open file to compute digest", filename);
63 Kumu::ByteString read_buffer (65536);
67 Kumu::Result_t r = reader.Read (read_buffer.Data(), read_buffer.Capacity(), &read);
69 if (r == Kumu::RESULT_ENDOFFILE) {
71 } else if (ASDCP_FAILURE (r)) {
72 throw FileError ("could not read file to compute digest", filename);
75 SHA1_Update (&sha, read_buffer.Data(), read);
79 (*progress) (0.5 + (0.5 * done / file_size));
83 byte_t byte_buffer[20];
84 SHA1_Final (byte_buffer, &sha);
88 return Kumu::base64encode (byte_buffer, 20, digest, 64);
92 libdcp::content_kind_to_string (ContentKind kind)
104 return "transitional";
111 case PUBLIC_SERVICE_ANNOUNCEMENT:
114 return "advertisement";
121 libdcp::content_kind_from_string (string type)
123 if (type == "feature") {
125 } else if (type == "short") {
127 } else if (type == "trailer") {
129 } else if (type == "test") {
131 } else if (type == "transitional") {
133 } else if (type == "rating") {
135 } else if (type == "teaser") {
137 } else if (type == "policy") {
139 } else if (type == "psa") {
140 return PUBLIC_SERVICE_ANNOUNCEMENT;
141 } else if (type == "advertisement") {
142 return ADVERTISEMENT;
149 libdcp::ends_with (string big, string little)
151 if (little.size() > big.size()) {
155 return big.compare (big.length() - little.length(), little.length(), little) == 0;