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/***************************************************************************
* Copyright (C) 2009 by the FIFE team *
* http://www.fifengine.net *
* This file is part of FIFE. *
* *
* FIFE is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2.1 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
// Standard C++ library includes
#include <iostream>
// 3rd party library includes
// FIFE includes
// These includes are split up in two parts, separated by one empty line
// First block: files included from the FIFE root src directory
// Second block: files included from the same folder
#include "utf8stringeditor.h"
#include "utf8.h"
namespace gcn {
int UTF8StringEditor::nextChar(const std::string & text, int byteOffset)
{
std::string::const_iterator c, e;
c = text.begin() + byteOffset;
e = text.end();
utf8::next(c, e);
return std::string(text.begin(), c).size();
}
int UTF8StringEditor::prevChar(const std::string & text, int byteOffset)
{
std::string::const_iterator c, b;
c = text.begin() + byteOffset;
b = text.begin();
utf8::prior(c, b);
return std::string(b, c).size();
}
int UTF8StringEditor::eraseChar(std::string & text, int byteOffset)
{
std::string::iterator begin, cur;
begin = text.begin() + byteOffset;
cur = begin;
utf8::next(cur, text.end());
text = std::string(text.begin(), begin) + std::string(cur, text.end());
return byteOffset; // this shouldn't change!
}
int UTF8StringEditor::insertChar(std::string & text, int byteOffset, int ch)
{
std::string newText;
std::string::iterator cut;
int newOffset;
// make a temp string from left part of the caret (+6 extra chars)
newText = text.substr(0, byteOffset) + " ";
// append character
utf8::append(ch, newText.begin() + byteOffset);
// calculate newText real length
cut = newText.begin() + byteOffset;
utf8::next(cut, newText.end());
// cut the string to real length
newText = std::string(newText.begin(), cut);
newOffset = newText.size();
// make new text
text = newText + text.substr(byteOffset);
return newOffset;
}
int UTF8StringEditor::countChars(const std::string & text, int byteOffset)
{
return utf8::distance(text.begin(), text.begin() + byteOffset);
}
int UTF8StringEditor::getOffset(const std::string & text, int charIndex)
{
if (charIndex < 0) return 0;
std::string::const_iterator cur, end;
cur = text.begin();
end = text.end();
for(int i = 0; i < charIndex && cur != end; i++) {
utf8::next(cur, end);
}
return std::string(text.begin(), cur).size();
}
};
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