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
|
#include "downloadfilejob.h"
#include <QtNetwork/QNetworkReply>
#include <QtCore/QFile>
#include <QtCore/QTemporaryFile>
using namespace QMatrixClient;
class DownloadFileJob::Private
{
public:
Private() : tempFile(new QTemporaryFile()) { }
explicit Private(const QString& localFilename)
: targetFile(new QFile(localFilename))
, tempFile(new QFile(targetFile->fileName() + ".qmcdownload"))
{ }
QScopedPointer<QFile> targetFile;
QScopedPointer<QFile> tempFile;
};
QUrl DownloadFileJob::makeRequestUrl(QUrl baseUrl, const QUrl& mxcUri)
{
return makeRequestUrl(baseUrl, mxcUri.authority(), mxcUri.path().mid(1));
}
DownloadFileJob::DownloadFileJob(const QString& serverName,
const QString& mediaId,
const QString& localFilename)
: GetContentJob(serverName, mediaId)
, d(localFilename.isEmpty() ? new Private : new Private(localFilename))
{
setObjectName("DownloadFileJob");
}
QString DownloadFileJob::targetFileName() const
{
return (d->targetFile ? d->targetFile : d->tempFile)->fileName();
}
void DownloadFileJob::beforeStart(const ConnectionData*)
{
if (d->targetFile && !d->targetFile->isReadable() &&
!d->targetFile->open(QIODevice::WriteOnly))
{
qCWarning(JOBS) << "Couldn't open the file"
<< d->targetFile->fileName() << "for writing";
setStatus(FileError, "Could not open the target file for writing");
return;
}
if (!d->tempFile->isReadable() && !d->tempFile->open(QIODevice::WriteOnly))
{
qCWarning(JOBS) << "Couldn't open the temporary file"
<< d->tempFile->fileName() << "for writing";
setStatus(FileError, "Could not open the temporary download file");
}
qCDebug(JOBS) << "Downloading to" << d->tempFile->fileName();
}
void DownloadFileJob::afterStart(const ConnectionData*, QNetworkReply* reply)
{
connect(reply, &QNetworkReply::metaDataChanged, this, [this,reply] {
auto sizeHeader = reply->header(QNetworkRequest::ContentLengthHeader);
if (sizeHeader.isValid())
{
auto targetSize = sizeHeader.value<qint64>();
if (targetSize != -1)
if (!d->tempFile->resize(targetSize))
{
qCWarning(JOBS) << "Failed to allocate" << targetSize
<< "bytes for" << d->tempFile->fileName();
setStatus(FileError,
"Could not reserve disk space for download");
}
}
});
connect(reply, &QIODevice::readyRead, this, [this,reply] {
auto bytes = reply->read(reply->bytesAvailable());
if (bytes.isEmpty())
{
qCWarning(JOBS)
<< "Unexpected empty chunk when downloading from"
<< reply->url() << "to" << d->tempFile->fileName();
} else {
d->tempFile->write(bytes);
}
});
}
void DownloadFileJob::beforeAbandon(QNetworkReply*)
{
if (d->targetFile)
d->targetFile->remove();
d->tempFile->remove();
}
BaseJob::Status DownloadFileJob::parseReply(QNetworkReply*)
{
if (d->targetFile)
{
d->targetFile->close();
if (!d->targetFile->remove())
{
qCWarning(JOBS) << "Failed to remove the target file placeholder";
return { FileError, "Couldn't finalise the download" };
}
if (!d->tempFile->rename(d->targetFile->fileName()))
{
qCWarning(JOBS) << "Failed to rename" << d->tempFile->fileName()
<< "to" << d->targetFile->fileName();
return { FileError, "Couldn't finalise the download" };
}
}
else
d->tempFile->close();
qCDebug(JOBS) << "Saved a file as" << targetFileName();
return Success;
}
|
