Aspose::Words::Saving::ResourceSavingArgs::get_ResourceStream method

ResourceSavingArgs::get_ResourceStream method

Allows to specify the stream where the resource will be saved to.

System::SharedPtr<System::IO::Stream> Aspose::Words::Saving::ResourceSavingArgs::get_ResourceStream() const

Remarks

This property allows you to save resources to streams instead of files.

The default value is null. When this property is null, the resource will be saved to a file specified in the ResourceFileName property.

Using IResourceSavingCallback you cannot substitute one resource with another. It is intended only for control over location where to save resources.

Examples

Shows how to use a callback to print the URIs of external resources created while converting a document to HTML.

void HtmlFixedResourceFolder()
{
    auto doc = MakeObject<Document>(MyDir + u"Rendering.docx");

    auto callback = MakeObject<ExHtmlFixedSaveOptions::ResourceUriPrinter>();

    auto options = MakeObject<HtmlFixedSaveOptions>();
    options->set_SaveFormat(SaveFormat::HtmlFixed);
    options->set_ExportEmbeddedImages(false);
    options->set_ResourcesFolder(ArtifactsDir + u"HtmlFixedResourceFolder");
    options->set_ResourcesFolderAlias(ArtifactsDir + u"HtmlFixedResourceFolderAlias");
    options->set_ShowPageBorder(false);
    options->set_ResourceSavingCallback(callback);

    // A folder specified by ResourcesFolderAlias will contain the resources instead of ResourcesFolder.
    // We must ensure the folder exists before the streams can put their resources into it.
    System::IO::Directory::CreateDirectory_(options->get_ResourcesFolderAlias());

    doc->Save(ArtifactsDir + u"HtmlFixedSaveOptions.HtmlFixedResourceFolder.html", options);

    std::cout << callback->GetText() << std::endl;

    ArrayPtr<String> resourceFiles = System::IO::Directory::GetFiles(ArtifactsDir + u"HtmlFixedResourceFolderAlias");

    ASSERT_FALSE(System::IO::Directory::Exists(ArtifactsDir + u"HtmlFixedResourceFolder"));
    std::function<bool(String f)> isImageOrCss = [](String f)
    {
        return f.EndsWith(u".jpeg") || f.EndsWith(u".png") || f.EndsWith(u".css");
    };

    ASSERT_EQ(6, resourceFiles->LINQ_Count(isImageOrCss));
}

class ResourceUriPrinter : public IResourceSavingCallback
{
public:
    String GetText()
    {
        return mText->ToString();
    }

    ResourceUriPrinter() : mSavedResourceCount(0), mText(MakeObject<System::Text::StringBuilder>())
    {
    }

private:
    int mSavedResourceCount;
    SharedPtr<System::Text::StringBuilder> mText;

    void ResourceSaving(SharedPtr<ResourceSavingArgs> args) override
    {
        // If we set a folder alias in the SaveOptions object, we will be able to print it from here.
        mText->AppendLine(String::Format(u"Resource #{0} \"{1}\"", ++mSavedResourceCount, args->get_ResourceFileName()));

        String extension = System::IO::Path::GetExtension(args->get_ResourceFileName());
        if (extension == u".ttf" || extension == u".woff")
        {
            // By default, 'ResourceFileUri' uses system folder for fonts.
            // To avoid problems in other platforms you must explicitly specify the path for the fonts.
            args->set_ResourceFileUri(ArtifactsDir + System::IO::Path::DirectorySeparatorChar + args->get_ResourceFileName());
        }

        mText->AppendLine(String(u"\t") + args->get_ResourceFileUri());

        // If we have specified a folder in the "ResourcesFolderAlias" property,
        // we will also need to redirect each stream to put its resource in that folder.
        args->set_ResourceStream(MakeObject<System::IO::FileStream>(args->get_ResourceFileUri(), System::IO::FileMode::Create));
        args->set_KeepResourceStreamOpen(false);
    }
};

See Also

Aspose::Words::Saving::ResourceSavingArgs::get_ResourceFileUri method Aspose::Words::Saving::ResourceSavingArgs::GetType method