Line data    Source code

       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             : #include <osl/file.h>
      21             : #include <rtl/ustring.h>
      22             : 
      23           0 : static sal_uInt32 SAL_CALL osl_defCalcTextWidth( rtl_uString *ustrText )
      24             : {
      25           0 :     return ustrText ? ustrText->length : 0;
      26             : }
      27             : 
      28             : 
      29           0 : oslFileError SAL_CALL osl_abbreviateSystemPath( rtl_uString *ustrSystemPath, rtl_uString **pustrCompacted, sal_uInt32 uMaxWidth, oslCalcTextWidthFunc pfnCalcWidth )
      30             : {
      31           0 :     oslFileError    error = osl_File_E_None;
      32           0 :     rtl_uString     *ustrPath = NULL;
      33           0 :     rtl_uString     *ustrFile = NULL;
      34             :     sal_uInt32      uPathWidth, uFileWidth;
      35             : 
      36           0 :     if ( !pfnCalcWidth )
      37           0 :         pfnCalcWidth = osl_defCalcTextWidth;
      38             : 
      39             :     {
      40           0 :         sal_Int32   iLastSlash = rtl_ustr_lastIndexOfChar_WithLength( ustrSystemPath->buffer, ustrSystemPath->length, SAL_PATHDELIMITER );
      41             : 
      42           0 :         if ( iLastSlash >= 0 )
      43             :         {
      44           0 :             rtl_uString_newFromStr_WithLength( &ustrPath, ustrSystemPath->buffer, iLastSlash );
      45           0 :             rtl_uString_newFromStr_WithLength( &ustrFile, &ustrSystemPath->buffer[iLastSlash], ustrSystemPath->length - iLastSlash );
      46             :         }
      47             :         else
      48             :         {
      49           0 :             rtl_uString_new( &ustrPath );
      50           0 :             rtl_uString_newFromString( &ustrFile, ustrSystemPath );
      51             :         }
      52             :     }
      53             : 
      54           0 :     uPathWidth = pfnCalcWidth( ustrPath );
      55           0 :     uFileWidth = pfnCalcWidth( ustrFile );
      56             : 
      57             :     /* First abbreviate the directory component of the path */
      58             : 
      59           0 :     while ( uPathWidth + uFileWidth > uMaxWidth )
      60             :     {
      61           0 :         if ( ustrPath->length > 3 )
      62             :         {
      63           0 :             ustrPath->length--;
      64           0 :             ustrPath->buffer[ustrPath->length-3] = '.';
      65           0 :             ustrPath->buffer[ustrPath->length-2] = '.';
      66           0 :             ustrPath->buffer[ustrPath->length-1] = '.';
      67           0 :             ustrPath->buffer[ustrPath->length] = 0;
      68             : 
      69           0 :             uPathWidth = pfnCalcWidth( ustrPath );
      70             :         }
      71             :         else
      72           0 :             break;
      73             :     }
      74             : 
      75             :     /* Now abbreviate file component */
      76             : 
      77           0 :     while ( uPathWidth + uFileWidth > uMaxWidth )
      78             :     {
      79           0 :         if ( ustrFile->length > 4 )
      80             :         {
      81           0 :             ustrFile->length--;
      82           0 :             ustrFile->buffer[ustrFile->length-3] = '.';
      83           0 :             ustrFile->buffer[ustrFile->length-2] = '.';
      84           0 :             ustrFile->buffer[ustrFile->length-1] = '.';
      85           0 :             ustrFile->buffer[ustrFile->length] = 0;
      86             : 
      87           0 :             uFileWidth = pfnCalcWidth( ustrFile );
      88             :         }
      89             :         else
      90           0 :             break;
      91             :     }
      92             : 
      93           0 :     rtl_uString_newConcat( pustrCompacted, ustrPath, ustrFile );
      94             : 
      95             :     /* Event now if path was compacted to ".../..." it can be to large */
      96             : 
      97           0 :     uPathWidth += uFileWidth;
      98             : 
      99           0 :     while ( uPathWidth > uMaxWidth )
     100             :     {
     101           0 :         (*pustrCompacted)->length--;
     102           0 :         (*pustrCompacted)->buffer[(*pustrCompacted)->length] = 0;
     103           0 :         uPathWidth = pfnCalcWidth( *pustrCompacted );
     104             :     }
     105             : 
     106           0 :     if ( ustrPath )
     107           0 :         rtl_uString_release( ustrPath );
     108             : 
     109           0 :     if ( ustrFile )
     110           0 :         rtl_uString_release( ustrFile );
     111             : 
     112           0 :     return error;
     113             : }
     114             : 
     115             : 
     116             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */