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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2015 Daniel Elstner <daniel.kitta@gmail.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "assetreader.hpp" | |
21 | ||
22 | #include <memory> | |
23 | ||
24 | #include <QtCore/QDebug> | |
25 | #include <QtCore/QFile> | |
26 | #include <QtCore/QStandardPaths> | |
27 | ||
28 | #include <libsigrok/libsigrok.h> | |
29 | ||
30 | using namespace pv; | |
31 | ||
32 | using std::string; | |
33 | using std::unique_ptr; | |
34 | ||
35 | void AndroidAssetReader::open(struct sr_resource *res, string name) | |
36 | { | |
37 | if (res->type == SR_RESOURCE_FIRMWARE) { | |
38 | auto path = QStandardPaths::locate(QStandardPaths::GenericDataLocation, | |
39 | QString::fromStdString("sigrok-firmware/" + name)); | |
40 | if (path.isEmpty()) | |
41 | path = QString::fromStdString("assets:/sigrok-firmware/" + name); | |
42 | ||
43 | unique_ptr<QFile> file {new QFile{path}}; | |
44 | ||
45 | if (!file->open(QIODevice::ReadOnly)) | |
46 | throw sigrok::Error{SR_ERR}; | |
47 | ||
48 | const auto size = file->size(); | |
49 | if (size < 0) | |
50 | throw sigrok::Error{SR_ERR}; | |
51 | ||
52 | res->size = size; | |
53 | res->handle = file.release(); | |
54 | } else { | |
55 | qWarning() << "AndroidAssetReader: Unknown resource type" << res->type; | |
56 | throw sigrok::Error{SR_ERR}; | |
57 | } | |
58 | } | |
59 | ||
60 | void AndroidAssetReader::close(struct sr_resource *res) | |
61 | { | |
62 | if (!res->handle) { | |
63 | qCritical("AndroidAssetReader: Invalid handle"); | |
64 | throw sigrok::Error{SR_ERR_ARG}; | |
65 | } | |
66 | const unique_ptr<QFile> file {static_cast<QFile*>(res->handle)}; | |
67 | res->handle = nullptr; | |
68 | ||
69 | file->close(); | |
70 | } | |
71 | ||
72 | size_t AndroidAssetReader::read(const struct sr_resource *res, void *buf, size_t count) | |
73 | { | |
74 | if (!res->handle) { | |
75 | qCritical("AndroidAssetReader: Invalid handle"); | |
76 | throw sigrok::Error{SR_ERR_ARG}; | |
77 | } | |
78 | auto *const file = static_cast<QFile*>(res->handle); | |
79 | ||
80 | const auto n_read = file->read(static_cast<char*>(buf), count); | |
81 | if (n_read < 0) | |
82 | throw sigrok::Error{SR_ERR}; | |
83 | ||
84 | return n_read; | |
85 | } |