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+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SVL_URIHELPER_HXX
+#define INCLUDED_SVL_URIHELPER_HXX
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <rtl/textenc.h>
+#include <svl/svldllapi.h>
+#include <tools/link.hxx>
+#include <tools/urlobj.hxx>
+
+namespace com::sun::star {
+    namespace uno { class XComponentContext; }
+    namespace uri { class XUriReference; }
+}
+
+class CharClass;
+
+namespace URIHelper {
+
+/**
+   @ATT
+   Calling this function with defaulted arguments rMaybeFileHdl = Link() and
+   bCheckFileExists = true often leads to results that are not intended:
+   Whenever the given rTheBaseURIRef is a file URL, the given rTheRelURIRef is
+   relative, and rTheRelURIRef could also be smart-parsed as a non-file URL
+   (e.g., the relative URL "foo/bar" can be smart-parsed as "http://foo/bar"),
+   then SmartRel2Abs called with rMaybeFileHdl = Link() and bCheckFileExists =
+   true returns the non-file URL interpretation.  To avoid this, either pass
+   some non-null rMaybeFileHdl if you want to check generated file URLs for
+   existence (see URIHelper::GetMaybeFileHdl), or use bCheckFileExists = false
+   if you want to generate file URLs without checking for their existence.
+*/
+SVL_DLLPUBLIC OUString SmartRel2Abs(INetURLObject const & rTheBaseURIRef,
+                                    OUString const & rTheRelURIRef,
+                                    Link<OUString *, bool> const & rMaybeFileHdl = Link<OUString *, bool>(),
+                                    bool bCheckFileExists = true,
+                                    bool bIgnoreFragment = false,
+                                    INetURLObject::EncodeMechanism eEncodeMechanism = INetURLObject::EncodeMechanism::WasEncoded,
+                                    INetURLObject::DecodeMechanism eDecodeMechanism = INetURLObject::DecodeMechanism::ToIUri,
+                                    rtl_TextEncoding eCharset = RTL_TEXTENCODING_UTF8,
+                                    FSysStyle eStyle = FSysStyle::Detect);
+
+SVL_DLLPUBLIC void SetMaybeFileHdl(Link<OUString *, bool> const & rTheMaybeFileHdl);
+
+SVL_DLLPUBLIC Link<OUString *, bool> const & GetMaybeFileHdl();
+
+/**
+   Converts a URI reference to a relative one, ignoring certain differences (for
+   example, treating file URLs for case-ignoring file systems
+   case-insensitively).
+
+   @param context a component context; must not be null
+
+   @param baseUriReference a base URI reference
+
+   @param uriReference a URI reference
+
+   @return a URI reference representing the given uriReference relative to the
+   given baseUriReference; if the given baseUriReference is not an absolute,
+   hierarchical URI reference, or the given uriReference is not a valid URI
+   reference, null is returned
+
+   @exception std::bad_alloc if an out-of-memory condition occurs
+
+   @exception css::uno::RuntimeException if any error occurs
+ */
+SVL_DLLPUBLIC css::uno::Reference< css::uri::XUriReference >
+normalizedMakeRelative(
+    css::uno::Reference< css::uno::XComponentContext > const & context,
+    OUString const & baseUriReference,
+    OUString const & uriReference);
+
+/**
+   A variant of normalizedMakeRelative with a simplified interface.
+
+   Internally calls normalizedMakeRelative with the default component context.
+
+   @param baseUriReference a base URI reference, passed to
+   normalizedMakeRelative
+
+   @param uriReference a URI reference, passed to normalizedMakeRelative
+
+   @return if the XUriReference returned by normalizedMakeRelative is empty,
+   uriReference is returned unmodified; otherwise, the result of calling
+   XUriReference::getUriReference on the XUriReference returned by
+   normalizedMakeRelative is returned
+
+   @exception std::bad_alloc if an out-of-memory condition occurs
+
+   @exception css::uno::RuntimeException if any error occurs
+
+   @deprecated
+   No code should rely on the default component context.
+*/
+SVL_DLLPUBLIC OUString simpleNormalizedMakeRelative( OUString const & baseUriReference,
+                                                     OUString const & uriReference);
+
+SVL_DLLPUBLIC OUString FindFirstURLInText(OUString const & rText,
+                                          sal_Int32 & rBegin,
+                                          sal_Int32 & rEnd,
+                                          CharClass const & rCharClass,
+                                          INetURLObject::EncodeMechanism eMechanism = INetURLObject::EncodeMechanism::WasEncoded,
+                                          rtl_TextEncoding eCharset = RTL_TEXTENCODING_UTF8);
+
+/** Remove any password component from both absolute and relative URLs.
+
+    @ATT  The current implementation will not remove a password from a
+    relative URL that has an authority component (e.g., the password is not
+    removed from the relative ftp URL <//user:password@domain/path>).  But
+    since our functions to translate between absolute and relative URLs never
+    produce relative URLs with authority components, this is no real problem.
+
+    @ATT  For relative URLs (or anything not recognized as an absolute URI),
+    the current implementation will return the input unmodified, not applying
+    any translations implied by the encode/decode parameters.
+
+    @param rURI  An absolute or relative URI reference.
+
+    @param eEncodeMechanism  See the general discussion for INetURLObject set-
+    methods.
+
+    @param eDecodeMechanism  See the general discussion for INetURLObject get-
+    methods.
+
+    @param eCharset  See the general discussion for INetURLObject get- and
+    set-methods.
+
+    @return  The input URI with any password component removed.
+ */
+SVL_DLLPUBLIC OUString removePassword(OUString const & rURI,
+                                      INetURLObject::EncodeMechanism eEncodeMechanism,
+                                      INetURLObject::DecodeMechanism eDecodeMechanism = INetURLObject::DecodeMechanism::ToIUri,
+                                      rtl_TextEncoding eCharset = RTL_TEXTENCODING_UTF8);
+
+/** Resolve a URL's host component domain name in IDNA syntax to plain DNS
+    syntax.
+
+    For details, see RFC 5890 "Internationalized Domain Names for Applications
+    (IDNA): Definitions and Document Framework."
+
+    @param: url  An arbitrary string, should be a URI.
+
+    @return  If the input matches the syntax of a hierarchical URL, and it has
+    a host component that matches the IDNA2008 domain name syntax, and that
+    domain name contains any U-labels, return a version of the input URL with
+    the host component resolved to plain DNS syntax.  Otherwise, return the
+    input unchanged.
+*/
+SVL_DLLPUBLIC OUString resolveIdnaHost(OUString const & url);
+
+}
+
+#endif // INCLUDED_SVL_URIHELPER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */