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Diffstat (limited to 'ucb/source/ucp/image/ucpimage.cxx')
| -rw-r--r-- | ucb/source/ucp/image/ucpimage.cxx | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/ucb/source/ucp/image/ucpimage.cxx b/ucb/source/ucp/image/ucpimage.cxx new file mode 100644 index 000000000000..fb3acff4e4ae --- /dev/null +++ b/ucb/source/ucp/image/ucpimage.cxx @@ -0,0 +1,172 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#include <sal/config.h> + +#include <cassert> + +#include <com/sun/star/lang/XServiceInfo.hpp> +#include <com/sun/star/ucb/XContentProvider.hpp> +#include <com/sun/star/uno/XComponentContext.hpp> +#include <com/sun/star/uri/UriReferenceFactory.hpp> +#include <cppuhelper/compbase.hxx> +#include <cppuhelper/supportsservice.hxx> +#include <osl/mutex.hxx> +#include <rtl/uri.hxx> +#include <rtl/ustrbuf.hxx> +#include <vcl/implimagetree.hxx> +#include <vcl/svapp.hxx> +#include <ucbhelper/content.hxx> + +// A LO-private ("implementation detail") UCP used to access images from help +// content, with theme fallback and localization support as provided by VCL's +// ImplImageTree. +// +// The URL scheme is +// +// "vnd.libreoffice.image://"<theme><path>["?lang="<language-tag>] + +namespace { + +class Provider final: + private osl::Mutex, + public cppu::WeakComponentImplHelper< + css::lang::XServiceInfo, css::ucb::XContentProvider> +{ +public: + explicit Provider( + css::uno::Reference<css::uno::XComponentContext> const & context): + WeakComponentImplHelper(*static_cast<Mutex *>(this)), context_(context) + {} + +private: + OUString SAL_CALL getImplementationName() + throw (css::uno::RuntimeException, std::exception) override + { return OUString("com.sun.star.comp.ucb.ImageContentProvider"); } + + sal_Bool SAL_CALL supportsService(OUString const & ServiceName) + throw (css::uno::RuntimeException, std::exception) override + { return cppu::supportsService(this, ServiceName); } + + css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() + throw (css::uno::RuntimeException, std::exception) override + { + return css::uno::Sequence<OUString>{ + "com.sun.star.ucb.ImageContentProvider"}; + } + + css::uno::Reference<css::ucb::XContent> SAL_CALL queryContent( + css::uno::Reference<css::ucb::XContentIdentifier> const & Identifier) + throw ( + css::ucb::IllegalIdentifierException, css::uno::RuntimeException, + std::exception) + override + { + css::uno::Reference<css::uno::XComponentContext> context; + { + osl::MutexGuard g(*this); + context = context_; + } + if (!context.is()) { + throw css::lang::DisposedException(); + } + auto url(Identifier->getContentIdentifier()); + auto uri(css::uri::UriReferenceFactory::create(context)->parse(url)); + if (!(uri.is() + && uri->getScheme().equalsIgnoreAsciiCase( + "vnd.libreoffice.image"))) + { + throw css::ucb::IllegalIdentifierException(url); + } + auto auth( + rtl::Uri::decode( + uri->getAuthority(), rtl_UriDecodeStrict, + RTL_TEXTENCODING_UTF8)); + if (auth.isEmpty()) { + throw css::ucb::IllegalIdentifierException(url); + } + auto path(uri->getPath()); + if (path.isEmpty()) { + throw css::ucb::IllegalIdentifierException(url); + } + OUStringBuffer buf; + assert(path[0] == '/'); + for (sal_Int32 i = 1;;) { + auto j = path.indexOf('/', i); + if (j == -1) { + j = path.getLength(); + } + auto seg( + rtl::Uri::decode( + path.copy(i, j - i), rtl_UriDecodeStrict, + RTL_TEXTENCODING_UTF8)); + if (seg.isEmpty()) { + throw css::ucb::IllegalIdentifierException(url); + } + if (i != 1) { + buf.append('/'); + } + buf.append(seg); + if (j == path.getLength()) { + break; + } + i = j + 1; + } + auto decPath(buf.makeStringAndClear()); + OUString lang; + if (uri->hasQuery()) { + if (!uri->getQuery().startsWith("lang=", &lang)) { + throw css::ucb::IllegalIdentifierException(url); + } + lang = rtl::Uri::decode( + lang, rtl_UriDecodeStrict, RTL_TEXTENCODING_UTF8); + if (lang.isEmpty()) { + throw css::ucb::IllegalIdentifierException(url); + } + } + OUString newUrl; + { + SolarMutexGuard g; + newUrl = ImplImageTree::get().getImageUrl(decPath, auth, lang); + } + ucbhelper::Content content; + return + ucbhelper::Content::create( + newUrl, css::uno::Reference<css::ucb::XCommandEnvironment>(), + context, content) + ? content.get() : css::uno::Reference<css::ucb::XContent>(); + } + + sal_Int32 SAL_CALL compareContentIds( + css::uno::Reference<css::ucb::XContentIdentifier> const & Id1, + css::uno::Reference<css::ucb::XContentIdentifier> const & Id2) + throw (css::uno::RuntimeException, std::exception) override + { + return Id1->getContentIdentifier().compareTo( + Id2->getContentIdentifier()); + } + + void SAL_CALL disposing() override { + context_.clear(); + } + + css::uno::Reference<css::uno::XComponentContext> context_; +}; + +} + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface * SAL_CALL +com_sun_star_comp_ucb_ImageContentProvider_get_implementation( + css::uno::XComponentContext * context, + css::uno::Sequence<css::uno::Any> const &) +{ + return cppu::acquire(new Provider(context)); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |