Differential D13868 Diff 49388 dataengines/potd/noaaprovider.cpp

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dataengines/potd/noaaprovider.cpp

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21#include "noaaprovider.h" 21​#include "noaaprovider.h"
22 22​
23#include <QRegularExpression> 23​#include <QRegularExpression>
24#include <QDebug> 24​#include <QDebug>
25 25​
26#include <KPluginFactory> 26​#include <KPluginFactory>
27#include <KIO/Job> 27​#include <KIO/Job>
28 28​
29 ​
30NOAAProvider::NOAAProvider(QObject *parent, const QVariantList &args) 29​NOAAProvider::NOAAProvider(QObject *parent, const QVariantList &args)
31 : PotdProvider(parent, args) 30​ : PotdProvider(parent, args)
32{ 31​{
33 const QUrl url(QStringLiteral("http://www.nnvl.noaa.gov/imageoftheday.php")); 32​ const QUrl url(QStringLiteral("http://www.nesdis.noaa.gov/content/imagery-and-data"));
34 33​
35 KIO::StoredTransferJob *job = KIO::storedGet(url, KIO::NoReload, KIO::HideProgressInfo); 34​ KIO::StoredTransferJob *job = KIO::storedGet(url, KIO::NoReload, KIO::HideProgressInfo);
36 connect(job, &KIO::StoredTransferJob::finished, this, &NOAAProvider::pageRequestFinished); 35​ connect(job, &KIO::StoredTransferJob::finished, this, &NOAAProvider::firstPageRequestFinished);
37} 36​}
38 37​
39NOAAProvider::~NOAAProvider() = default; 38​NOAAProvider::~NOAAProvider() = default;
40 39​
41QImage NOAAProvider::image() const 40​QImage NOAAProvider::image() const
42{ 41​{
43 return mImage; 42​ return mImage;
44} 43​}
45 44​
46void NOAAProvider::pageRequestFinished(KJob* _job) 45​void NOAAProvider::firstPageRequestFinished(KJob* _job)
46​{
47​ KIO::StoredTransferJob *job = static_cast<KIO::StoredTransferJob *>( _job );
48​ if (job->error()) {
49​ emit error(this);
50​ return;
51​ }
52​
53​ const QString data = QString::fromUtf8( job->data() );
54​
55​ // Using regular expression could be fragile in such case, but the HTML
56​ // NOAA page itself is not a valid XML file and unfortunately it could
57​ // not be parsed successfully till the content we want. And we do not want
58​ // to use heavy weight QtWebkit. So we use QRegularExpression to capture
59​ // the wanted url here.
60​ QString url;
61​ QRegularExpression re(QStringLiteral("href=\"(.*)\"><img alt=\"Latest Image of the Day"), QRegularExpression::MultilineOption);
62​ auto result = re.match(data);
63​ if (result.hasMatch())
64​ {
65​ url = result.captured(1);
66​ }
67​ if (url.isEmpty())
68​ {
69​ emit error(this);
70​ return;
71​ }
72​
73​ job = KIO::storedGet(QUrl(url), KIO::NoReload, KIO::HideProgressInfo);
74​ connect(job, &KIO::StoredTransferJob::finished, this, &NOAAProvider::secondPageRequestFinished);
75​}
76​
77​void NOAAProvider::secondPageRequestFinished(KJob* _job)
47{ 78​{
48 KIO::StoredTransferJob *job = static_cast<KIO::StoredTransferJob *>( _job ); 79​ KIO::StoredTransferJob *job = static_cast<KIO::StoredTransferJob *>( _job );
49 if (job->error()) { 80​ if (job->error()) {
50 emit error(this); 81​ emit error(this);
51 return; 82​ return;
52 } 83​ }
53 84​
54 const QString data = QString::fromUtf8( job->data() ); 85​ const QString data = QString::fromUtf8( job->data() );
55 86​
56 // Using regular expression could be fragile in such case, but the HTML 87​ // Using regular expression could be fragile in such case, but the HTML
57 // NOAA page itself is not a valid XML file and unfortunately it could 88​ // NOAA page itself is not a valid XML file and unfortunately it could
58 // not be parsed successfully till the content we want. And we do not want 89​ // not be parsed successfully till the content we want. And we do not want
59 // to use heavy weight QtWebkit. So we use QRegularExpression to capture 90​ // to use heavy weight QtWebkit. So we use QRegularExpression to capture
60 // the wanted url here. 91​ // the wanted url here.
61 QString url; 92​ QString url;
62 QRegularExpression re(QStringLiteral("_curPic = (.*?)</script>")); 93​ QRegularExpression re(QStringLiteral("a href='(.*)'><img style"), QRegularExpression::MultilineOption);
63 auto result = re.match(data); 94​ auto result = re.match(data);
64 if (result.hasMatch()) { 95​ if (result.hasMatch()) {
65 url = QLatin1String("http://www.nnvl.noaa.gov/") + result.captured(1); 96​ url = result.captured(1);
66 } 97​ }
67 if (url.isEmpty()) { 98​ if (url.isEmpty()) {
68 emit error(this); 99​ emit error(this);
69 return; 100​ return;
70 } 101​ }
71 102​
72 KIO::StoredTransferJob *imageJob = KIO::storedGet( QUrl(url), KIO::NoReload, KIO::HideProgressInfo ); 103​ KIO::StoredTransferJob *imageJob = KIO::storedGet( QUrl(url), KIO::NoReload, KIO::HideProgressInfo );
73 connect(imageJob, &KIO::StoredTransferJob::finished, this, &NOAAProvider::imageRequestFinished); 104​ connect(imageJob, &KIO::StoredTransferJob::finished, this, &NOAAProvider::imageRequestFinished);
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