comphelper/source/misc/anytostring.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 <comphelper/anytostring.hxx>
  22 #include <osl/diagnose.h>
  23 #include <rtl/ustrbuf.hxx>
  24 #include <typelib/typedescription.h>
  25 #include <com/sun/star/lang/XServiceInfo.hpp>
  26
  27 using namespace ::com::sun::star;
  28
  29 namespace comphelper {
  30 namespace {
  31
  32 void appendTypeError(
  33     OUStringBuffer & buf, typelib_TypeDescriptionReference * typeRef )
  34 {
  35     buf.append( "<cannot get type description of type " );
  36     buf.append( OUString::unacquired( &typeRef->pTypeName ) );
  37     buf.append( '>' );
  38 }
  39
  40 inline void appendChar( OUStringBuffer & buf, sal_Unicode c )
  41 {
  42     if (c < ' ' || c > '~') {
  43         buf.append( "\\X" );
  44         OUString const s(
  45             OUString::number( static_cast< sal_Int32 >(c), 16 ) );
  46         for ( sal_Int32 f = 4 - s.getLength(); f > 0; --f )
  47             buf.append( '0' );
  48         buf.append( s );
  49     }
  50     else {
  51         buf.append( c );
  52     }
  53 }
  54
  55
  56 void appendValue( OUStringBuffer & buf,
  57                   void const * val, typelib_TypeDescriptionReference * typeRef,
  58                   bool prependType )
  59 {
  60     if (typeRef->eTypeClass == typelib_TypeClass_VOID) {
  61         buf.append( "void" );
  62         return;
  63     }
  64     assert(val != 0);
  65
  66     if (prependType &&
  67         typeRef->eTypeClass != typelib_TypeClass_STRING &&
  68         typeRef->eTypeClass != typelib_TypeClass_CHAR &&
  69         typeRef->eTypeClass != typelib_TypeClass_BOOLEAN)
  70     {
  71         buf.append( '(' );
  72         buf.append( OUString::unacquired( &typeRef->pTypeName ) );
  73         buf.append( ") " );
  74     }
  75
  76     switch (typeRef->eTypeClass) {
  77     case typelib_TypeClass_INTERFACE: {
  78         buf.append( '@' );
  79         buf.append( reinterpret_cast< sal_Int64 >(
  80                         *static_cast< void * const * >(val) ), 16 );
  81         uno::Reference< lang::XServiceInfo > xServiceInfo(
  82             *static_cast< uno::XInterface * const * >(val),
  83             uno::UNO_QUERY );
  84         if (xServiceInfo.is()) {
  85             buf.append( " (ImplementationName = \"" );
  86             buf.append( xServiceInfo->getImplementationName() );
  87             buf.append( "\")" );
  88         }
  89         break;
  90     }
  91     case typelib_TypeClass_STRUCT:
  92     case typelib_TypeClass_EXCEPTION: {
  93         buf.append( "{ " );
  94         typelib_TypeDescription * typeDescr = 0;
  95         typelib_typedescriptionreference_getDescription( &typeDescr, typeRef );
  96         if (typeDescr == 0 || !typelib_typedescription_complete( &typeDescr )) {
  97             appendTypeError( buf, typeRef );
  98         }
  99         else {
 100             typelib_CompoundTypeDescription * compType =
 101                 reinterpret_cast< typelib_CompoundTypeDescription * >(
 102                     typeDescr );
 103             sal_Int32 nDescr = compType->nMembers;
 104
 105             if (compType->pBaseTypeDescription) {
 106                 appendValue(
 107                     buf, val, reinterpret_cast<
 108                     typelib_TypeDescription * >(
 109                         compType->pBaseTypeDescription)->pWeakRef, false );
 110                 if (nDescr > 0)
 111                     buf.append( ", " );
 112             }
 113
 114             typelib_TypeDescriptionReference ** ppTypeRefs =
 115                 compType->ppTypeRefs;
 116             sal_Int32 * memberOffsets = compType->pMemberOffsets;
 117             rtl_uString ** ppMemberNames = compType->ppMemberNames;
 118
 119             for ( sal_Int32 nPos = 0; nPos < nDescr; ++nPos )
 120             {
 121                 buf.append( ppMemberNames[ nPos ] );
 122                 buf.append( " = " );
 123                 typelib_TypeDescription * memberType = 0;
 124                 TYPELIB_DANGER_GET( &memberType, ppTypeRefs[ nPos ] );
 125                 if (memberType == 0) {
 126                     appendTypeError( buf, ppTypeRefs[ nPos ] );
 127                 }
 128                 else {
 129                     appendValue( buf,
 130                                  static_cast< char const * >(
 131                                      val ) + memberOffsets[ nPos ],
 132                                  memberType->pWeakRef, true );
 133                     TYPELIB_DANGER_RELEASE( memberType );
 134                 }
 135                 if (nPos < (nDescr - 1))
 136                     buf.append( ", " );
 137             }
 138         }
 139         buf.append( " }" );
 140         if (typeDescr != 0)
 141             typelib_typedescription_release( typeDescr );
 142         break;
 143     }
 144     case typelib_TypeClass_SEQUENCE: {
 145         typelib_TypeDescription * typeDescr = 0;
 146         TYPELIB_DANGER_GET( &typeDescr, typeRef );
 147         if (typeDescr == 0) {
 148             appendTypeError( buf,typeRef );
 149         }
 150         else {
 151             typelib_TypeDescriptionReference * elementTypeRef =
 152                 reinterpret_cast<
 153                 typelib_IndirectTypeDescription * >(typeDescr)->pType;
 154             typelib_TypeDescription * elementTypeDescr = 0;
 155             TYPELIB_DANGER_GET( &elementTypeDescr, elementTypeRef );
 156             if (elementTypeDescr == 0)
 157             {
 158                 appendTypeError( buf, elementTypeRef );
 159             }
 160             else
 161             {
 162                 sal_Int32 nElementSize = elementTypeDescr->nSize;
 163                 uno_Sequence * seq =
 164                     *static_cast< uno_Sequence * const * >(val);
 165                 sal_Int32 nElements = seq->nElements;
 166
 167                 if (nElements > 0)
 168                 {
 169                     buf.append( "{ " );
 170                     char const * pElements = seq->elements;
 171                     for ( sal_Int32 nPos = 0; nPos < nElements; ++nPos )
 172                     {
 173                         appendValue(
 174                             buf, pElements + (nElementSize * nPos),
 175                             elementTypeDescr->pWeakRef, false );
 176                         if (nPos < (nElements - 1))
 177                             buf.append( ", " );
 178                     }
 179                     buf.append( " }" );
 180                 }
 181                 else
 182                 {
 183                     buf.append( "{}" );
 184                 }
 185                 TYPELIB_DANGER_RELEASE( elementTypeDescr );
 186             }
 187             TYPELIB_DANGER_RELEASE( typeDescr );
 188         }
 189         break;
 190     }
 191     case typelib_TypeClass_ANY: {
 192         buf.append( "{ " );
 193         uno_Any const * pAny = static_cast< uno_Any const * >(val);
 194         appendValue( buf, pAny->pData, pAny->pType, true );
 195         buf.append( " }" );
 196         break;
 197     }
 198     case typelib_TypeClass_TYPE:
 199         buf.append( (*static_cast<
 200                      typelib_TypeDescriptionReference * const * >(val)
 201                         )->pTypeName );
 202         break;
 203     case typelib_TypeClass_STRING: {
 204         buf.append( '\"' );
 205         OUString const & str = OUString::unacquired(
 206             static_cast< rtl_uString * const * >(val) );
 207         sal_Int32 len = str.getLength();
 208         for ( sal_Int32 pos = 0; pos < len; ++pos )
 209         {
 210             sal_Unicode c = str[ pos ];
 211             if (c == '\"')
 212                 buf.append( "\\\"" );
 213             else if (c == '\\')
 214                 buf.append( "\\\\" );
 215             else
 216                 appendChar( buf, c );
 217         }
 218         buf.append( '\"' );
 219         break;
 220     }
 221     case typelib_TypeClass_ENUM: {
 222         typelib_TypeDescription * typeDescr = 0;
 223         typelib_typedescriptionreference_getDescription( &typeDescr, typeRef );
 224         if (typeDescr == 0 || !typelib_typedescription_complete( &typeDescr )) {
 225             appendTypeError( buf, typeRef );
 226         }
 227         else
 228         {
 229             sal_Int32 * pValues =
 230                 reinterpret_cast< typelib_EnumTypeDescription * >(
 231                     typeDescr )->pEnumValues;
 232             sal_Int32 nPos = reinterpret_cast< typelib_EnumTypeDescription * >(
 233                 typeDescr )->nEnumValues;
 234             while (nPos--)
 235             {
 236                 if (pValues[ nPos ] == *static_cast< int const * >(val))
 237                     break;
 238             }
 239             if (nPos >= 0)
 240             {
 241                 buf.append( reinterpret_cast< typelib_EnumTypeDescription * >(
 242                                 typeDescr )->ppEnumNames[ nPos ] );
 243             }
 244             else
 245             {
 246                 buf.append( "?unknown enum value?" );
 247             }
 248         }
 249         if (typeDescr != 0)
 250             typelib_typedescription_release( typeDescr );
 251         break;
 252     }
 253     case typelib_TypeClass_BOOLEAN:
 254         if (*static_cast< sal_Bool const * >(val) != sal_False)
 255             buf.append( "true" );
 256         else
 257             buf.append( "false" );
 258         break;
 259     case typelib_TypeClass_CHAR: {
 260         buf.append( '\'' );
 261         sal_Unicode c = *static_cast< sal_Unicode const * >(val);
 262         if (c == '\'')
 263             buf.append( "\\\'" );
 264         else if (c == '\\')
 265             buf.append( "\\\\" );
 266         else
 267             appendChar( buf, c );
 268         buf.append( '\'' );
 269         break;
 270     }
 271     case typelib_TypeClass_FLOAT:
 272         buf.append( *static_cast< float const * >(val) );
 273         break;
 274     case typelib_TypeClass_DOUBLE:
 275         buf.append( *static_cast< double const * >(val) );
 276         break;
 277     case typelib_TypeClass_BYTE:
 278         buf.append( static_cast< sal_Int32 >(
 279                         *static_cast< sal_Int8 const * >(val) ) );
 280         break;
 281     case typelib_TypeClass_SHORT:
 282         buf.append( static_cast< sal_Int32 >(
 283                         *static_cast< sal_Int16 const * >(val) ) );
 284         break;
 285     case typelib_TypeClass_UNSIGNED_SHORT:
 286         buf.append( static_cast< sal_Int32 >(
 287                         *static_cast< sal_uInt16 const * >(val) ) );
 288         break;
 289     case typelib_TypeClass_LONG:
 290         buf.append( *static_cast< sal_Int32 const * >(val) );
 291         break;
 292     case typelib_TypeClass_UNSIGNED_LONG:
 293         buf.append( static_cast< sal_Int64 >(
 294                         *static_cast< sal_uInt32 const * >(val) ) );
 295         break;
 296     case typelib_TypeClass_HYPER:
 297     case typelib_TypeClass_UNSIGNED_HYPER:
 298         buf.append( *static_cast< sal_Int64 const * >(val) );
 299         break;
 300 //     case typelib_TypeClass_UNKNOWN:
 301 //     case typelib_TypeClass_SERVICE:
 302 //     case typelib_TypeClass_MODULE:
 303     default:
 304         buf.append( '?' );
 305         break;
 306     }
 307 }
 308
 309 } // anon namespace
 310
 311
 312 OUString anyToString( uno::Any const & value )
 313 {
 314     OUStringBuffer buf;
 315     appendValue( buf, value.getValue(), value.getValueTypeRef(), true );
 316     return buf.makeStringAndClear();
 317 }
 318
 319 } // namespace comphelper
 320
 321 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */