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291 lines
6.8 KiB
291 lines
6.8 KiB
15 years ago
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/*
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* article.cpp
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*
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* Copyright (c) 2001, 2002, 2003, 2004 Frerich Raabe <raabe@kde.org>
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. For licensing and distribution details, check the
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* accompanying file 'COPYING'.
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*/
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#include "article.h"
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#include "tools_p.h"
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#include "enclosure.h"
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#include "category.h"
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#include <kdebug.h>
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#include <krfcdate.h>
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#include <kurl.h>
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#include <kurllabel.h>
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#include <kmdcodec.h>
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#include <qdatetime.h>
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#include <qdom.h>
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using namespace RSS;
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namespace RSS
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{
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KMD5 md5Machine;
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}
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struct Article::Private : public Shared
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{
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QString title;
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KURL link;
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QString description;
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QDateTime pubDate;
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QString guid;
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QString author;
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bool guidIsPermaLink;
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MetaInfoMap meta;
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KURL commentsLink;
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int numComments;
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Enclosure enclosure;
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QValueList<Category> categories;
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};
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Article::Article() : d(new Private)
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{
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}
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Article::Article(const Article &other) : d(0)
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{
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*this = other;
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}
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Enclosure Article::enclosure() const
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{
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return d->enclosure;
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}
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QValueList<Category> Article::categories() const
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{
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return d->categories;
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}
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Article::Article(const QDomNode &node, Format format, Version version) : d(new Private)
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{
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QString elemText;
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d->numComments=0;
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if (!(elemText = extractTitle(node)).isNull())
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d->title = elemText;
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if (format==AtomFeed)
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{
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QDomNode n;
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for (n = node.firstChild(); !n.isNull(); n = n.nextSibling()) {
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const QDomElement e = n.toElement();
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if ( (e.tagName()==QString::fromLatin1("link")) &&
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(e.attribute(QString::fromLatin1("rel"), QString::fromLatin1("alternate")) == QString::fromLatin1("alternate")))
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{
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d->link=n.toElement().attribute(QString::fromLatin1("href"));
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break;
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}
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}
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}
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else
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{
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if (!(elemText = extractNode(node, QString::fromLatin1("link"))).isNull())
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d->link = elemText;
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}
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// prefer content/content:encoded over summary/description for feeds that provide it
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QString tagName=(format==AtomFeed)? QString::fromLatin1("content"): QString::fromLatin1("content:encoded");
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if (!(elemText = extractNode(node, tagName, false)).isNull())
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d->description = elemText;
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if (d->description.isEmpty())
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{
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if (!(elemText = extractNode(node, QString::fromLatin1("body"), false)).isNull())
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d->description = elemText;
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if (d->description.isEmpty()) // 3rd try: see http://www.intertwingly.net/blog/1299.html
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{
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if (!(elemText = extractNode(node, QString::fromLatin1((format==AtomFeed)? "summary" : "description"), false)).isNull())
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d->description = elemText;
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}
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}
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time_t time = 0;
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if (format == AtomFeed)
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{
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if (version == vAtom_1_0)
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elemText = extractNode(node, QString::fromLatin1("updated"));
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else
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elemText = extractNode(node, QString::fromLatin1("issued"));
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if (!elemText.isNull())
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time = parseISO8601Date(elemText);
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}
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else
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{
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elemText = extractNode(node, QString::fromLatin1("pubDate"));
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if (!elemText.isNull())
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time = KRFCDate::parseDate(elemText);
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}
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if (!(elemText = extractNode(node, QString::fromLatin1("dc:date"))).isNull())
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{
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time = parseISO8601Date(elemText);
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}
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// 0 means invalid, not epoch (parsers return epoch+1 when parsing epoch, see the KRFCDate::parseDate() docs)
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if (time != 0)
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d->pubDate.setTime_t(time);
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if (!(elemText = extractNode(node, QString::fromLatin1("wfw:comment"))).isNull()) {
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d->commentsLink = elemText;
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}
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if (!(elemText = extractNode(node, QString::fromLatin1("slash:comments"))).isNull()) {
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d->numComments = elemText.toInt();
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}
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QDomElement element = QDomNode(node).toElement();
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// in RSS 1.0, we use <item about> attribute as ID
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// FIXME: pass format version instead of checking for attribute
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if (!element.isNull() && element.hasAttribute(QString::fromLatin1("rdf:about")))
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{
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d->guid = element.attribute(QString::fromLatin1("rdf:about")); // HACK: using ns properly did not work
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d->guidIsPermaLink = false;
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}
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else
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{
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tagName=(format==AtomFeed)? QString::fromLatin1("id"): QString::fromLatin1("guid");
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QDomNode n = node.namedItem(tagName);
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if (!n.isNull())
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{
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d->guidIsPermaLink = (format==AtomFeed)? false : true;
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if (n.toElement().attribute(QString::fromLatin1("isPermaLink"), "true") == "false") d->guidIsPermaLink = false;
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if (!(elemText = extractNode(node, tagName)).isNull())
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d->guid = elemText;
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}
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}
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if(d->guid.isEmpty()) {
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d->guidIsPermaLink = false;
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md5Machine.reset();
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QDomNode n(node);
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md5Machine.update(d->title.utf8());
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md5Machine.update(d->description.utf8());
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d->guid = QString(md5Machine.hexDigest().data());
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d->meta[QString::fromLatin1("guidIsHash")] = QString::fromLatin1("true");
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}
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QDomNode enclosure = element.namedItem(QString::fromLatin1("enclosure"));
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if (enclosure.isElement())
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d->enclosure = Enclosure::fromXML(enclosure.toElement());
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d->author = parseItemAuthor(element, format, version);
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for (QDomNode i = node.firstChild(); !i.isNull(); i = i.nextSibling())
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{
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if (i.isElement())
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{
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if (i.toElement().tagName() == QString::fromLatin1("metaInfo:meta"))
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{
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QString type = i.toElement().attribute(QString::fromLatin1("type"));
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d->meta[type] = i.toElement().text();
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}
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else if (i.toElement().tagName() == QString::fromLatin1("category"))
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{
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d->categories.append(Category::fromXML(i.toElement()));
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}
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}
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}
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}
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Article::~Article()
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{
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if (d->deref())
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delete d;
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}
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QString Article::title() const
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{
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return d->title;
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}
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QString Article::author() const
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{
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return d->author;
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}
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const KURL &Article::link() const
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{
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return d->link;
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}
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QString Article::description() const
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{
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return d->description;
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}
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QString Article::guid() const
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{
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return d->guid;
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}
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bool Article::guidIsPermaLink() const
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{
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return d->guidIsPermaLink;
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}
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const QDateTime &Article::pubDate() const
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{
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return d->pubDate;
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}
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const KURL &Article::commentsLink() const
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{
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return d->commentsLink;
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}
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int Article::comments() const
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{
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return d->numComments;
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}
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QString Article::meta(const QString &key) const
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{
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return d->meta[key];
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}
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KURLLabel *Article::widget(QWidget *parent, const char *name) const
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{
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KURLLabel *label = new KURLLabel(d->link.url(), d->title, parent, name);
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label->setUseTips(true);
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if (!d->description.isNull())
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label->setTipText(d->description);
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return label;
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}
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Article &Article::operator=(const Article &other)
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{
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if (this != &other) {
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other.d->ref();
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if (d && d->deref())
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delete d;
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d = other.d;
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}
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return *this;
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}
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bool Article::operator==(const Article &other) const
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{
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return d->guid == other.guid();
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}
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// vim:noet:ts=4
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