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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 .
*/
#include <precomp.h>
#include <toolkit/out_position.hxx>
// NOT FULLY DEFINED SERVICES
namespace output
{
namespace
{
const int C_nAssumedMaxLinkLength = 500;
void move_ToParent(
Node * & io_node,
intt i_levels = 1 );
void
move_ToParent( Node * & io_node,
intt i_levels )
{
for ( intt n = 0; n < i_levels; ++n )
{
csv_assert(io_node != 0);
io_node = io_node->Parent();
}
}
} // namepace anonymous
Position::Position()
: sFile(),
pDirectory(&Node::Null_())
{
}
Position::Position( Node & i_directory,
const String & i_file )
: sFile(i_file),
pDirectory(&i_directory)
{
}
Position::Position( const Position & i_directory,
const String & i_sDifferentFile )
: sFile(i_sDifferentFile),
pDirectory(i_directory.pDirectory)
{
}
Position::~Position()
{
}
Position &
Position::operator=( Node & i_node )
{
pDirectory = &i_node;
sFile.clear();
return *this;
}
Position &
Position::operator+=( const String & i_nodeName )
{
csv_assert(pDirectory != 0);
pDirectory = &pDirectory->Provide_Child(i_nodeName);
sFile.clear();
return *this;
}
Position &
Position::operator-=( intt i_levels )
{
csv_assert(pDirectory != 0);
for ( intt i = i_levels; i > 0; --i )
{
pDirectory = pDirectory->Parent();
if (pDirectory == 0)
{
pDirectory = &Node::Null_();
i = 0;
}
}
sFile.clear();
return *this;
}
String
Position::LinkToRoot() const
{
StreamLock sl(C_nAssumedMaxLinkLength);
return sl() << get_UpLink(Depth()) << c_str;
}
void
Position::Get_LinkTo( StreamStr & o_result,
const Position & i_destination,
const String & i_localLabel ) const
{
Node * p1 = pDirectory;
Node * p2 = i_destination.pDirectory;
intt diff = Depth() - i_destination.Depth();
intt pathLength1 = 0;
intt pathLength2 = 0;
if ( diff > 0 )
{
pathLength1 = diff;
move_ToParent(p1,pathLength1);
}
else if ( diff < 0 )
{
pathLength2 = -diff;
move_ToParent(p2,pathLength2);
}
while ( p1 != p2 )
{
move_ToParent(p1);
move_ToParent(p2);
++pathLength1;
++pathLength2;
}
o_result << get_UpLink(pathLength1);
i_destination.pDirectory->Get_Path(o_result, pathLength2);
o_result << i_destination.sFile;
if (i_localLabel.length())
o_result << "#" << i_localLabel;
}
void
Position::Get_LinkToRoot( StreamStr & o_result ) const
{
o_result << get_UpLink(Depth());
}
void
Position::Set( Node & i_node,
const String & i_file )
{
sFile = i_file;
pDirectory = &i_node;
}
const char *
get_UpLink(uintt i_depth)
{
static const uintt
C_nMaxDepth = 30;
static const char
C_sUpLinkArray[3*C_nMaxDepth+1] =
"../../../../../../../../../../"
"../../../../../../../../../../"
"../../../../../../../../../../";
static const char *
C_sUpLink = &C_sUpLinkArray[0];
if ( i_depth <= C_nMaxDepth )
{
return C_sUpLink + 3*(C_nMaxDepth - i_depth);
}
else
{ // not THREAD fast
static std::vector<char>
aRet;
uintt nNeededSize = i_depth * 3 + 1;
if (aRet.size() < nNeededSize)
{
aRet.resize(nNeededSize);
char * pEnd = &aRet[nNeededSize-1];
*pEnd = '\0';
for ( char * pFill = &(*aRet.begin());
pFill != pEnd;
pFill += 3 )
{
memcpy(pFill, C_sUpLink, 3);
}
} // end if
return &aRet[aRet.size() - 1 - 3*i_depth];
}
}
} // namespace output
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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