stoc/source/uriproc/ExternalUriReferenceTranslator.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include "stocservices.hxx"
  22
  23 #include "supportsService.hxx"
  24
  25 #include "com/sun/star/lang/XServiceInfo.hpp"
  26 #include "com/sun/star/uno/Exception.hpp"
  27 #include "com/sun/star/uno/Reference.hxx"
  28 #include "com/sun/star/uno/RuntimeException.hpp"
  29 #include "com/sun/star/uno/Sequence.hxx"
  30 #include "com/sun/star/uno/XComponentContext.hpp"
  31 #include "com/sun/star/uno/XInterface.hpp"
  32 #include "com/sun/star/uri/XExternalUriReferenceTranslator.hpp"
  33 #include "cppuhelper/implbase2.hxx"
  34 #include "cppuhelper/weak.hxx"
  35 #include "osl/thread.h"
  36 #include "rtl/string.h"
  37 #include "rtl/textenc.h"
  38 #include "rtl/uri.h"
  39 #include "rtl/uri.hxx"
  40 #include "rtl/ustrbuf.hxx"
  41 #include "rtl/ustring.hxx"
  42 #include "sal/types.h"
  43
  44 #include <new>
  45
  46 namespace {
  47
  48 class Translator: public cppu::WeakImplHelper2<
  49     css::lang::XServiceInfo, css::uri::XExternalUriReferenceTranslator >
  50 {
  51 public:
  52     explicit Translator(
  53         css::uno::Reference< css::uno::XComponentContext > const & context):
  54         m_context(context) {}
  55
  56     virtual OUString SAL_CALL getImplementationName()
  57         throw (css::uno::RuntimeException);
  58
  59     virtual sal_Bool SAL_CALL supportsService(OUString const & serviceName)
  60         throw (css::uno::RuntimeException);
  61
  62     virtual css::uno::Sequence< OUString > SAL_CALL
  63     getSupportedServiceNames() throw (css::uno::RuntimeException);
  64
  65     virtual OUString SAL_CALL
  66     translateToInternal(OUString const & externalUriReference)
  67         throw (css::uno::RuntimeException);
  68
  69     virtual OUString SAL_CALL
  70     translateToExternal(OUString const & internalUriReference)
  71         throw (css::uno::RuntimeException);
  72
  73 private:
  74     Translator(Translator &); // not implemented
  75     void operator =(Translator); // not implemented
  76
  77     virtual ~Translator() {}
  78
  79     css::uno::Reference< css::uno::XComponentContext > m_context;
  80 };
  81
  82 OUString Translator::getImplementationName()
  83     throw (css::uno::RuntimeException)
  84 {
  85     return
  86         stoc_services::ExternalUriReferenceTranslator::getImplementationName();
  87 }
  88
  89 sal_Bool Translator::supportsService(OUString const & serviceName)
  90     throw (css::uno::RuntimeException)
  91 {
  92     return stoc::uriproc::supportsService(
  93         getSupportedServiceNames(), serviceName);
  94 }
  95
  96 css::uno::Sequence< OUString > Translator::getSupportedServiceNames()
  97     throw (css::uno::RuntimeException)
  98 {
  99     return stoc_services::ExternalUriReferenceTranslator::
 100         getSupportedServiceNames();
 101 }
 102
 103 OUString Translator::translateToInternal(
 104     OUString const & externalUriReference)
 105     throw (css::uno::RuntimeException)
 106 {
 107     if (!externalUriReference.matchIgnoreAsciiCaseAsciiL(
 108             RTL_CONSTASCII_STRINGPARAM("file:/")))
 109     {
 110         return externalUriReference;
 111     }
 112     sal_Int32 i = RTL_CONSTASCII_LENGTH("file:");
 113     OUStringBuffer buf;
 114     buf.append(externalUriReference.getStr(), i);
 115     // Some environments (e.g., Java) produce illegal file URLs without an
 116     // authority part; treat them as having an empty authority part:
 117     if (!externalUriReference.matchAsciiL(RTL_CONSTASCII_STRINGPARAM("//"), i))
 118     {
 119         buf.appendAscii(RTL_CONSTASCII_STRINGPARAM("//"));
 120     }
 121     rtl_TextEncoding encoding = osl_getThreadTextEncoding();
 122     for (bool path = true;;) {
 123         sal_Int32 j = i;
 124         while (j != externalUriReference.getLength()
 125                && externalUriReference[j] != '#'
 126                && (!path || externalUriReference[j] != '/'))
 127         {
 128             ++j;
 129         }
 130         if (j != i) {
 131             OUString seg(
 132                 rtl::Uri::encode(
 133                     rtl::Uri::decode(
 134                         externalUriReference.copy(i, j - i),
 135                         rtl_UriDecodeStrict, encoding),
 136                     rtl_UriCharClassPchar, rtl_UriEncodeStrict,
 137                     RTL_TEXTENCODING_UTF8));
 138             if (seg.isEmpty()) {
 139                 return OUString();
 140             }
 141             buf.append(seg);
 142         }
 143         if (j == externalUriReference.getLength()) {
 144             break;
 145         }
 146         buf.append(externalUriReference[j]);
 147         path = externalUriReference[j] == '/';
 148         i = j + 1;
 149     }
 150     return buf.makeStringAndClear();
 151 }
 152
 153 OUString Translator::translateToExternal(
 154     OUString const & internalUriReference)
 155     throw (css::uno::RuntimeException)
 156 {
 157     if (!internalUriReference.matchIgnoreAsciiCaseAsciiL(
 158             RTL_CONSTASCII_STRINGPARAM("file://")))
 159     {
 160         return internalUriReference;
 161     }
 162     sal_Int32 i = RTL_CONSTASCII_LENGTH("file://");
 163     OUStringBuffer buf;
 164     buf.append(internalUriReference.getStr(), i);
 165     rtl_TextEncoding encoding = osl_getThreadTextEncoding();
 166     for (bool path = true;;) {
 167         sal_Int32 j = i;
 168         while (j != internalUriReference.getLength()
 169                && internalUriReference[j] != '#'
 170                && (!path || internalUriReference[j] != '/'))
 171         {
 172             ++j;
 173         }
 174         if (j != i) {
 175             // Use rtl_UriDecodeToIuri -> rtl_UriEncodeStrictKeepEscapes instead
 176             // of rtl_UriDecodeStrict -> rtl_UriEncodeStrict, so that spurious
 177             // non--UTF-8 octets like "%FE" are copied verbatim:
 178             OUString seg(
 179                 rtl::Uri::encode(
 180                     rtl::Uri::decode(
 181                         internalUriReference.copy(i, j - i),
 182                         rtl_UriDecodeToIuri, RTL_TEXTENCODING_UTF8),
 183                     rtl_UriCharClassPchar, rtl_UriEncodeStrictKeepEscapes,
 184                     encoding));
 185             if (seg.isEmpty()) {
 186                 return OUString();
 187             }
 188             buf.append(seg);
 189         }
 190         if (j == internalUriReference.getLength()) {
 191             break;
 192         }
 193         buf.append(internalUriReference[j]);
 194         path = internalUriReference[j] == '/';
 195         i = j + 1;
 196     }
 197     return buf.makeStringAndClear();
 198 }
 199
 200 }
 201
 202 namespace stoc_services  { namespace ExternalUriReferenceTranslator {
 203
 204 css::uno::Reference< css::uno::XInterface > create(
 205     css::uno::Reference< css::uno::XComponentContext > const & context)
 206     SAL_THROW((css::uno::Exception))
 207 {
 208     try {
 209         return static_cast< cppu::OWeakObject * >(new Translator(context));
 210     } catch (std::bad_alloc &) {
 211         throw css::uno::RuntimeException(
 212             OUString("std::bad_alloc"), 0);
 213     }
 214 }
 215
 216 OUString getImplementationName() {
 217     return OUString("com.sun.star.comp.uri.ExternalUriReferenceTranslator");
 218 }
 219
 220 css::uno::Sequence< OUString > getSupportedServiceNames() {
 221     css::uno::Sequence< OUString > s(1);
 222     s[0] = OUString("com.sun.star.uri.ExternalUriReferenceTranslator");
 223     return s;
 224 }
 225
 226 } }
 227
 228 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */