106 lines
3.0 KiB
C++
106 lines
3.0 KiB
C++
/***************************************************************************
|
|
* Copyright (C) 2008-2012 by Andrzej Rybczak *
|
|
* electricityispower@gmail.com *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* This program 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 General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the *
|
|
* Free Software Foundation, Inc., *
|
|
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
|
|
***************************************************************************/
|
|
|
|
#include "utility/wide_string.h"
|
|
|
|
std::string ToString(const std::wstring &ws)
|
|
{
|
|
std::string result;
|
|
char s[MB_CUR_MAX];
|
|
for (size_t i = 0; i < ws.length(); ++i)
|
|
{
|
|
int n = wcrtomb(s, ws[i], 0);
|
|
if (n > 0)
|
|
result.append(s, n);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
std::wstring ToWString(const std::string &s)
|
|
{
|
|
std::wstring result;
|
|
wchar_t *ws = new wchar_t[s.length()];
|
|
const char *c_s = s.c_str();
|
|
int n = mbsrtowcs(ws, &c_s, s.length(), 0);
|
|
if (n > 0)
|
|
result.append(ws, n);
|
|
delete [] ws;
|
|
return result;
|
|
}
|
|
|
|
size_t wideLength(const std::wstring &ws)
|
|
{
|
|
int len = wcswidth(ws.c_str(), -1);
|
|
if (len < 0)
|
|
return ws.length();
|
|
else
|
|
return len;
|
|
}
|
|
|
|
void wideCut(std::wstring &ws, size_t max_length)
|
|
{
|
|
size_t i = 0;
|
|
int remained_len = max_length;
|
|
for (; i < ws.length(); ++i)
|
|
{
|
|
remained_len -= wcwidth(ws[i]);
|
|
if (remained_len < 0)
|
|
{
|
|
ws.resize(i);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
std::wstring wideShorten(const std::wstring &ws, size_t max_length)
|
|
{
|
|
std::wstring result;
|
|
if (wideLength(ws) > max_length)
|
|
{
|
|
const size_t half_max = max_length/2 - 1;
|
|
size_t len = 0;
|
|
// get beginning of string
|
|
for (auto it = ws.begin(); it != ws.end(); ++it)
|
|
{
|
|
len += wcwidth(*it);
|
|
if (len > half_max)
|
|
break;
|
|
result += *it;
|
|
}
|
|
len = 0;
|
|
std::wstring end;
|
|
// get end of string in reverse order
|
|
for (auto it = ws.rbegin(); it != ws.rend(); ++it)
|
|
{
|
|
len += wcwidth(*it);
|
|
if (len > half_max)
|
|
break;
|
|
end += *it;
|
|
}
|
|
// apply end of string to its beginning
|
|
result += L"..";
|
|
result.append(end.rbegin(), end.rend());
|
|
}
|
|
else
|
|
result = ws;
|
|
return result;
|
|
}
|
|
|