Quick fix to make the documentation work, needs a proper solution though.

Reviewed-by: kh
(cherry picked from commit 342e621253)

src/plugins/help/helpviewer.cpp

@@ -44,6 +44,10 @@
 
 using namespace Help::Internal;
 
+QString HelpViewer::DocPath = QString::fromLatin1("qthelp://com."
+    "trolltech.qt.%1/").arg(QString(QLatin1String(QT_VERSION_STR))
+    .replace(QLatin1String("."), QLatin1String("")));
+
 QString HelpViewer::AboutBlankPage =
     QCoreApplication::translate("HelpViewer", "<title>about:blank</title>");
 
@@ -52,6 +56,43 @@ QString HelpViewer::PageNotFoundMessage =
     "align=\"center\"><br><br><h1>The page could not be found</h1><br><h3>'%1'"
     "</h3></div>");
 
+struct ExtensionMap {
+    const char *extension;
+    const char *mimeType;
+} extensionMap[] = {
+    { ".bmp", "image/bmp" },
+    { ".css", "text/css" },
+    { ".gif", "image/gif" },
+    { ".html", "text/html" },
+    { ".htm", "text/html" },
+    { ".ico", "image/x-icon" },
+    { ".jpeg", "image/jpeg" },
+    { ".jpg", "image/jpeg" },
+    { ".js", "application/x-javascript" },
+    { ".mng", "video/x-mng" },
+    { ".pbm", "image/x-portable-bitmap" },
+    { ".pgm", "image/x-portable-graymap" },
+    { ".pdf", "application/pdf" },
+    { ".png", "image/png" },
+    { ".ppm", "image/x-portable-pixmap" },
+    { ".rss", "application/rss+xml" },
+    { ".svg", "image/svg+xml" },
+    { ".svgz", "image/svg+xml" },
+    { ".text", "text/plain" },
+    { ".tif", "image/tiff" },
+    { ".tiff", "image/tiff" },
+    { ".txt", "text/plain" },
+    { ".xbm", "image/x-xbitmap" },
+    { ".xml", "text/xml" },
+    { ".xpm", "image/x-xpm" },
+    { ".xsl", "text/xsl" },
+    { ".xhtml", "application/xhtml+xml" },
+    { ".wml", "text/vnd.wap.wml" },
+    { ".wmlc", "application/vnd.wap.wmlc" },
+    { "about:blank", 0 },
+    { 0, 0 }
+};
+
 bool HelpViewer::isLocalUrl(const QUrl &url)
 {
     const QString &scheme = url.scheme();
@@ -65,9 +106,21 @@ bool HelpViewer::isLocalUrl(const QUrl &url)
 
 bool HelpViewer::canOpenPage(const QString &url)
 {
-    return url.endsWith(QLatin1String(".html"), Qt::CaseInsensitive)
-        || url.endsWith(QLatin1String(".htm"), Qt::CaseInsensitive)
-        || url == Help::Constants::AboutBlank;
+    return !mimeFromUrl(url).isEmpty();
+}
+
+QString HelpViewer::mimeFromUrl(const QString &url)
+{
+    const int index = url.lastIndexOf(QLatin1Char('.'));
+    const QByteArray &ext = url.mid(index).toUtf8().toLower();
+
+    const ExtensionMap *e = extensionMap;
+    while (e->extension) {
+        if (ext == e->extension)
+            return QLatin1String(e->mimeType);
+        ++e;
+    }
+    return QLatin1String("");
 }
 
 bool HelpViewer::launchWithExternalApp(const QUrl &url)

src/plugins/help/helpviewer.h

@@ -85,11 +85,13 @@ public:
     bool findText(const QString &text, Find::IFindSupport::FindFlags flags,
         bool incremental, bool fromSearch);
 
+    static QString DocPath;
     static QString AboutBlankPage;
     static QString PageNotFoundMessage;
 
     static bool isLocalUrl(const QUrl &url);
     static bool canOpenPage(const QString &url);
+    static QString mimeFromUrl(const QString &url);
     static bool launchWithExternalApp(const QUrl &url);
 
 public slots:

src/plugins/help/helpviewer_qwv.cpp

@@ -124,25 +124,28 @@ HelpNetworkAccessManager::HelpNetworkAccessManager(QObject *parent)
 QNetworkReply *HelpNetworkAccessManager::createRequest(Operation /*op*/,
     const QNetworkRequest &request, QIODevice* /*outgoingData*/)
 {
-    const QUrl& url = request.url();
-    QString mimeType = url.toString();
-    if (mimeType.endsWith(QLatin1String(".svg"))
-        || mimeType.endsWith(QLatin1String(".svgz"))) {
-            mimeType = QLatin1String("image/svg+xml");
-    } else if (mimeType.endsWith(QLatin1String(".css"))) {
-        mimeType = QLatin1String("text/css");
-    } else if (mimeType.endsWith(QLatin1String(".js"))) {
-        mimeType = QLatin1String("text/javascript");
-    } else if (mimeType.endsWith(QLatin1String(".txt"))) {
-        mimeType = QLatin1String("text/plain");
-    } else {
-        mimeType = QLatin1String("text/html");
+    QString url = request.url().toString();
+    const QHelpEngineCore &engine = HelpManager::helpEngineCore();
+    // TODO: For some reason the url to load is already wrong (passed from webkit)
+    // though the css file and the references inside should work that way. One 
+    // possible problem might be that the css is loaded at the same level as the
+    // html, thus a path inside the css like (../images/foo.png) might cd out of
+    // the virtual folder
+    if (!engine.findFile(url).isValid()) {
+        if (url.startsWith(HelpViewer::DocPath)) {
+            if (!url.startsWith(HelpViewer::DocPath + "qdoc/")) {
+                url = url.replace(HelpViewer::DocPath,
+                    HelpViewer::DocPath + QLatin1String("qdoc/"));
+            }
+        }
     }
 
-    const QHelpEngineCore &engine = HelpManager::helpEngineCore();
+    const QString &mimeType = HelpViewer::mimeFromUrl(url);
     const QByteArray &data = engine.findFile(url).isValid() ? engine.fileData(url)
-        : HelpViewer::PageNotFoundMessage.arg(url.toString()).toUtf8();
-    return new HelpNetworkReply(request, data, mimeType);
+        : HelpViewer::PageNotFoundMessage.arg(url).toUtf8();
+
+    return new HelpNetworkReply(request, data, mimeType.isEmpty()
+        ? QLatin1String("application/octet-stream") : mimeType);
 }
 
 // -- HelpPage