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/*
* tools_p.cpp
*
* Copyright (c) 2001, 2002, 2003 Frerich Raabe <raabe@kde.org>
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. For licensing and distribution details, check the
* accompanying file 'COPYING'.
*/
#include "tools_p.h"
#include <krfcdate.h>
#include <qdom.h>
#include <kcharsets.h>
#include <qregexp.h>
namespace RSS {
time_t parseISO8601Date(const QString &s)
{
// do some sanity check: 26-12-2004T00:00+00:00 is parsed to epoch+1 in the KRFCDate, which is wrong. So let's check if the date begins with YYYY -fo
if (s.stripWhiteSpace().left(4).toInt() < 1000)
return 0; // error
// FIXME: imho this is done in KRFCDate::parseDateISO8601() automatically, so we could omit it? -fo
if (s.find('T') != -1)
return KRFCDate::parseDateISO8601(s);
else
return KRFCDate::parseDateISO8601(s + "T12:00:00");
}
QString childNodesAsXML(const QDomNode& parent)
{
QDomNodeList list = parent.childNodes();
QString str;
QTextStream ts( &str, IO_WriteOnly );
for (uint i = 0; i < list.count(); ++i)
ts << list.item(i);
return str.stripWhiteSpace();
}
static QString plainTextToHtml(const QString& plainText)
{
QString str(plainText);
str.replace("&", "&");
str.replace("\"", """);
str.replace("<", "<");
//str.replace(">", ">");
str.replace("\n", "<br/>");
return str;
}
enum ContentFormat { Text, HTML, XML, Binary };
static ContentFormat mapTypeToFormat(const QString& modep, const QString& typep, const QString& src)
{
QString mode = modep.isNull() ? "escaped" : modep;
QString type = typep;
//"If neither the type attribute nor the src attribute is provided,
//Atom Processors MUST behave as though the type attribute were
//present with a value of "text""
if (type.isNull() && src.isEmpty())
type = QString::fromUtf8("text");
if (type == QString::fromUtf8("html")
|| type == QString::fromUtf8("text/html"))
return HTML;
if (type == QString::fromUtf8("text")
|| (type.startsWith(QString::fromUtf8("text/"), false)
&& !type.startsWith(QString::fromUtf8("text/xml"), false))
)
return Text;
QStringList xmltypes;
xmltypes.append(QString::fromUtf8("xhtml"));
// XML media types as defined in RFC3023:
xmltypes.append(QString::fromUtf8("text/xml"));
xmltypes.append(QString::fromUtf8("application/xml"));
xmltypes.append(QString::fromUtf8("text/xml-external-parsed-entity"));
xmltypes.append(QString::fromUtf8("application/xml-external-parsed-entity"));
xmltypes.append(QString::fromUtf8("application/xml-dtd"));
if (xmltypes.contains(type)
|| type.endsWith(QString::fromUtf8("+xml"), false)
|| type.endsWith(QString::fromUtf8("/xml"), false))
return XML;
return Binary;
}
static QString extractAtomContent(const QDomElement& e)
{
ContentFormat format = mapTypeToFormat(e.attribute("mode"),
e.attribute("type"),
e.attribute("src"));
switch (format)
{
case HTML:
{
const bool hasPre = e.text().contains( "<pre>", false ) || e.text().contains( "<pre ", false );
return KCharsets::resolveEntities( hasPre ? e.text() : e.text().simplifyWhiteSpace() );
}
case Text:
return plainTextToHtml(e.text().stripWhiteSpace());
case XML:
return childNodesAsXML(e).simplifyWhiteSpace();
case Binary:
default:
return QString();
}
return QString();
}
QString extractNode(const QDomNode &parent, const QString &elemName, bool isInlined)
{
QDomNode node = parent.namedItem(elemName);
if (node.isNull())
return QString::null;
QDomElement e = node.toElement();
QString result = e.text().stripWhiteSpace(); // let's assume plain text
if (elemName == "content") // we have Atom here
{
result = extractAtomContent(e);
}
else // check for HTML; not necessary for Atom:content
{
bool hasPre = result.contains("<pre>", false) || result.contains("<pre ", false);
bool hasHtml = hasPre || result.contains("<"); // FIXME: test if we have html, should be more clever -> regexp
if(!isInlined && !hasHtml) // perform nl2br if not a inline elt and it has no html elts
result = result = result.replace(QChar('\n'), "<br />");
if(!hasPre) // strip white spaces if no <pre>
result = result.simplifyWhiteSpace();
}
return result.isEmpty() ? QString::null : result;
}
QString extractTitle(const QDomNode & parent)
{
QDomNode node = parent.namedItem(QString::fromLatin1("title"));
if (node.isNull())
return QString::null;
QString result = node.toElement().text();
result = KCharsets::resolveEntities(KCharsets::resolveEntities(result).replace(QRegExp("<[^>]*>"), "").remove("\\"));
result = result.simplifyWhiteSpace();
if (result.isEmpty())
return QString::null;
return result;
}
static void authorFromString(const QString& strp, QString& name, QString& email)
{
QString str = strp.stripWhiteSpace();
if (str.isEmpty())
return;
// look for something looking like a mail address ( "foo@bar.com",
// "<foo@bar.com>") and extract it
QRegExp remail("<?([^@\\s<]+@[^>\\s]+)>?"); // FIXME: user "proper" regexp,
// search kmail source for it
int pos = remail.search(str);
if (pos != -1)
{
QString all = remail.cap(0);
email = remail.cap(1);
str.replace(all, ""); // remove mail address
}
// simplify the rest and use it as name
name = str.simplifyWhiteSpace();
// after removing the email, str might have
// the format "(Foo M. Bar)". We cut off
// parentheses if there are any. However, if
// str is of the format "Foo M. Bar (President)",
// we should not cut anything.
QRegExp rename("^\\(([^\\)]*)\\)");
pos = rename.search(name);
if (pos != -1)
{
name = rename.cap(1);
}
name = name.isEmpty() ? QString() : name;
email = email.isEmpty() ? QString() : email;
}
QString parseItemAuthor(const QDomElement& element, Format format, Version version)
{
QString name;
QString email;
QDomElement dcCreator = element.namedItem("dc:creator").toElement();
if (!dcCreator.isNull())
authorFromString(dcCreator.text(), name, email);
else if (format == AtomFeed)
{
QDomElement atomAuthor = element.namedItem("author").toElement();
if (atomAuthor.isNull())
atomAuthor = element.namedItem("atom:author").toElement();
if (!atomAuthor.isNull())
{
QDomElement atomName = atomAuthor.namedItem("name").toElement();
if (atomName.isNull())
atomName = atomAuthor.namedItem("atom:name").toElement();
name = atomName.text().stripWhiteSpace();
QDomElement atomEmail = atomAuthor.namedItem("email").toElement();
if (atomEmail.isNull())
atomEmail = atomAuthor.namedItem("atom:email").toElement();
email = atomEmail.text().stripWhiteSpace();
}
}
else if (format == RSSFeed)
{
authorFromString(element.namedItem("author").toElement().text(), name, email);
}
if (name.isNull())
name = email;
if (!email.isNull())
return QString("<a href=\"mailto:%1\">%2</a>").arg(email).arg(name);
else
return name;
}
} // namespace RSS
// vim:noet:ts=4
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