113 lines
3.6 KiB
C++
113 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <osl/file.h>
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#include <rtl/ustring.h>
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#include <cassert>
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static sal_uInt32 osl_defCalcTextWidth( rtl_uString *ustrText )
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{
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return ustrText ? ustrText->length : 0;
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}
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oslFileError SAL_CALL osl_abbreviateSystemPath( rtl_uString *ustrSystemPath, rtl_uString **pustrCompacted, sal_uInt32 uMaxWidth, oslCalcTextWidthFunc pfnCalcWidth )
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{
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rtl_uString *ustrPath = nullptr;
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rtl_uString *ustrFile = nullptr;
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sal_uInt32 uPathWidth, uFileWidth;
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if ( !pfnCalcWidth )
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pfnCalcWidth = osl_defCalcTextWidth;
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{
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sal_Int32 iLastSlash = rtl_ustr_lastIndexOfChar_WithLength( ustrSystemPath->buffer, ustrSystemPath->length, SAL_PATHDELIMITER );
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if ( iLastSlash >= 0 )
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{
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rtl_uString_newFromStr_WithLength( &ustrPath, ustrSystemPath->buffer, iLastSlash );
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rtl_uString_newFromStr_WithLength( &ustrFile, &ustrSystemPath->buffer[iLastSlash], ustrSystemPath->length - iLastSlash );
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}
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else
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{
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rtl_uString_new( &ustrPath );
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rtl_uString_newFromString( &ustrFile, ustrSystemPath );
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}
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}
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assert(ustrPath && ustrFile);
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uPathWidth = pfnCalcWidth( ustrPath );
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uFileWidth = pfnCalcWidth( ustrFile );
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/* First abbreviate the directory component of the path */
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while ( uPathWidth + uFileWidth > uMaxWidth )
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{
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if ( ustrPath->length > 3 )
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{
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ustrPath->length--;
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ustrPath->buffer[ustrPath->length-3] = '.';
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ustrPath->buffer[ustrPath->length-2] = '.';
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ustrPath->buffer[ustrPath->length-1] = '.';
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ustrPath->buffer[ustrPath->length] = 0;
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uPathWidth = pfnCalcWidth( ustrPath );
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}
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else
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break;
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}
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/* Now abbreviate file component */
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while ( uPathWidth + uFileWidth > uMaxWidth )
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{
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if ( ustrFile->length > 4 )
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{
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ustrFile->length--;
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ustrFile->buffer[ustrFile->length-3] = '.';
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ustrFile->buffer[ustrFile->length-2] = '.';
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ustrFile->buffer[ustrFile->length-1] = '.';
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ustrFile->buffer[ustrFile->length] = 0;
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uFileWidth = pfnCalcWidth( ustrFile );
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}
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else
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break;
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}
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rtl_uString_newConcat( pustrCompacted, ustrPath, ustrFile );
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/* Event now if path was compacted to ".../..." it can be too large */
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uPathWidth += uFileWidth;
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while ( uPathWidth > uMaxWidth )
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{
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(*pustrCompacted)->length--;
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(*pustrCompacted)->buffer[(*pustrCompacted)->length] = 0;
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uPathWidth = pfnCalcWidth( *pustrCompacted );
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}
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rtl_uString_release(ustrPath);
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rtl_uString_release(ustrFile);
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return osl_File_E_None;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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