rainmeter-studio/Common/StringUtil.cpp

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/*
Copyright (C) 2013 Birunthan Mohanathas
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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "StringUtil.h"
namespace StringUtil {
std::string Narrow(const WCHAR* str, int strLen, int cp)
{
std::string narrowStr;
if (str && *str)
{
if (strLen == -1)
{
strLen = (int)wcslen(str);
}
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int bufLen = WideCharToMultiByte(cp, 0, str, strLen, nullptr, 0, nullptr, nullptr);
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if (bufLen > 0)
{
narrowStr.resize(bufLen);
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WideCharToMultiByte(cp, 0, str, strLen, &narrowStr[0], bufLen, nullptr, nullptr);
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}
}
return narrowStr;
}
std::wstring Widen(const char* str, int strLen, int cp)
{
std::wstring wideStr;
if (str && *str)
{
if (strLen == -1)
{
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strLen = (int)strlen(str);
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}
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int bufLen = MultiByteToWideChar(cp, 0, str, strLen, nullptr, 0);
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if (bufLen > 0)
{
wideStr.resize(bufLen);
MultiByteToWideChar(cp, 0, str, strLen, &wideStr[0], bufLen);
}
}
return wideStr;
}
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/*
** Escapes reserved PCRE regex metacharacters.
*/
void EscapeRegExp(std::wstring& str)
{
size_t start = 0;
while ((start = str.find_first_of(L"\\^$|()[{.+*?", start)) != std::wstring::npos)
{
str.insert(start, L"\\");
start += 2;
}
}
/*
** Escapes reserved URL characters.
*/
void EscapeUrl(std::wstring& str)
{
size_t pos = 0;
while ((pos = str.find_first_of(L" !*'();:@&=+$,/?#[]", pos)) != std::wstring::npos)
{
WCHAR buffer[3];
_snwprintf_s(buffer, _countof(buffer), L"%.2X", str[pos]);
str[pos] = L'%';
str.insert(pos + 1, buffer);
pos += 3;
}
}
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} // namespace StringUtil