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Code Issues Releases Wiki Activity

Parse more entities out of tweets.

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This commit is contained in:
John Maguire 2012-05-29 18:47:55 -07:00
parent 919a88976b
commit 5af50f7db0
1 changed files with 103 additions and 32 deletions
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135
src/songinfo/twitterartistinfo.cpp
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@ -85,7 +85,108 @@ void TwitterArtistInfo::FetchUserTimeline(const QString& twitter_id, int id) {
SLOT(UserTimelineRequestFinished(QNetworkReply*, QString, int)), reply, twitter_id, id);
}
void TwitterArtistInfo::UserTimelineRequestFinished(QNetworkReply* reply, const QString& twitter_id, int id) {
namespace {
struct Entity {
int start_index;
int end_index;
QString text;
QUrl url;
bool operator <(const Entity& b) const {
return start_index < b.start_index;
}
};
Entity ParseUrlEntity(const QVariant& u) {
QVariantMap url = u.toMap();
QVariantList indices = url["indices"].toList();
Entity entity;
entity.start_index = indices[0].toInt();
entity.end_index = indices[1].toInt();
entity.text = url["display_url"].toString();
entity.url = QUrl(url["expanded_url"].toString());
return entity;
}
Entity ParseHashtagEntity(const QVariant& h) {
static const char* kTwitterSearchUrl = "https://twitter.com/search/%1";
QVariantMap hashtag = h.toMap();
QVariantList indices = hashtag["indices"].toList();
Entity entity;
entity.start_index = indices[0].toInt();
entity.end_index = indices[1].toInt();
entity.text += "#";
entity.text += hashtag["text"].toString();
entity.url = QUrl(QString(kTwitterSearchUrl).arg(hashtag["text"].toString()));
return entity;
}
Entity ParseMentionEntity(const QVariant& m) {
static const char* kTwitterUserUrl = "https://twitter.com/%1";
QVariantMap mention = m.toMap();
QVariantList indices = mention["indices"].toList();
Entity entity;
entity.start_index = indices[0].toInt();
entity.end_index = indices[1].toInt();
entity.text += "@";
entity.text += mention["screen_name"].toString();
entity.url = QUrl(QString(kTwitterUserUrl).arg(mention["screen_name"].toString()));
return entity;
}
QString GenerateHtmlForTweetStream(const QVariantList& tweets) {
QString html;
QXmlStreamWriter writer(&html);
foreach (const QVariant& v, tweets) {
QVariantMap tweet = v.toMap();
QString text = tweet["text"].toString();
QVariantMap es = tweet["entities"].toMap();
QVector<Entity> entities;
QVariantList urls = es["urls"].toList();
foreach (const QVariant& u, urls) {
entities.push_back(ParseUrlEntity(u));
}
QVariantList hashtags = es["hashtags"].toList();
foreach (const QVariant& h, hashtags) {
entities.push_back(ParseHashtagEntity(h));
}
QVariantList mentions = es["user_mentions"].toList();
foreach (const QVariant& m, mentions) {
entities.push_back(ParseMentionEntity(m));
}
qSort(entities);
writer.writeStartElement("div");
int offset = 0;
foreach (const Entity& e, entities) {
writer.writeCharacters(text.mid(offset, e.start_index - offset));
offset = e.end_index;
writer.writeStartElement("a");
writer.writeAttribute("href", e.url.toEncoded());
writer.writeCharacters(e.text);
writer.writeEndElement();
}
writer.writeCharacters(text.mid(offset));
writer.writeEndElement();
writer.writeEmptyElement("br");
}
return html;
}
}
void TwitterArtistInfo::UserTimelineRequestFinished(
QNetworkReply* reply, const QString& twitter_id, int id) {
QJson::Parser parser;
bool ok = false;
QVariant result = parser.parse(reply, &ok);
@ -98,37 +199,7 @@ void TwitterArtistInfo::UserTimelineRequestFinished(QNetworkReply* reply, const
data.id_ = "twitter/" + twitter_id;
data.title_ = QString("Twitter (%1)").arg(twitter_id);
QString html;
QXmlStreamWriter writer(&html);
QVariantList tweets = result.toList();
foreach (const QVariant& v, tweets) {
QVariantMap tweet = v.toMap();
QString text = tweet["text"].toString();
QVariantMap entities = tweet["entities"].toMap();
QVariantList urls = entities["urls"].toList();
writer.writeStartElement("div");
int offset = 0;
foreach (const QVariant& u, urls) {
QVariantMap url = u.toMap();
QVariantList indices = url["indices"].toList();
int start_index = indices[0].toInt();
int end_index = indices[1].toInt();
writer.writeCharacters(text.mid(offset, start_index));
offset = end_index;
writer.writeStartElement("a");
writer.writeAttribute("href", url["expanded_url"].toString());
writer.writeCharacters(url["display_url"].toString());
writer.writeEndElement();
}
writer.writeCharacters(text.mid(offset));
writer.writeEndElement();
}
QString html = GenerateHtmlForTweetStream(result.toList());
SongInfoTextView* text_view = new SongInfoTextView;
text_view->SetHtml(html);