gbe_fork/overlay_experimental/System/String.hpp

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2022-08-05 14:06:42 +08:00
/*
* Copyright (C) Nemirtingas
* This file is part of System.
*
* System 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 3 of the License, or (at your option) any later version.
*
* System 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 the System; if not, see
* <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <string>
#include <cstdint>
#include <cstring>
#include <iterator>
#include "StringView.hpp"
#include "StringSwitch.hpp"
namespace System {
namespace String {
///////////////////////////////////////////////////////////
// Implementations
namespace details {
void LeftTrim(std::string& str);
void RightTrim(std::string& str);
void ToUpper(char* str, size_t len);
void ToLower(char* str, size_t len);
char* CloneString(System::StringView src);
size_t CopyString(System::StringView src, char *dst, size_t dst_size);
}
inline void LeftTrim(std::string& str)
{
details::LeftTrim(str);
}
inline void RightTrim(std::string& str)
{
details::RightTrim(str);
}
inline void Trim(std::string& str)
{
LeftTrim(str);
RightTrim(str);
}
inline std::string CopyLeftTrim(const char* str)
{
if (str == nullptr)
return std::string();
std::string r(str);
LeftTrim(r);
return r;
}
inline std::string CopyLeftTrim(System::StringView str)
{
std::string r(str.to_string());
LeftTrim(r);
return r;
}
inline std::string CopyLeftTrim(std::string const& str)
{
std::string r(str);
LeftTrim(r);
return r;
}
inline std::string CopyRightTrim(const char* str)
{
if (str == nullptr)
return std::string();
std::string r(str);
RightTrim(r);
return r;
}
inline std::string CopyRightTrim(System::StringView str)
{
std::string r(str.to_string());
RightTrim(r);
return r;
}
inline std::string CopyRightTrim(std::string const& str)
{
std::string r(str);
RightTrim(r);
return r;
}
inline std::string CopyTrim(const char* str)
{
if (str == nullptr)
return std::string();
std::string r(str);
Trim(r);
return r;
}
inline std::string CopyTrim(System::StringView str)
{
std::string r(str.to_string());
Trim(r);
return r;
}
inline std::string CopyTrim(std::string const& str)
{
std::string r(str);
Trim(r);
return r;
}
inline void ToLower(std::string& str)
{
details::ToLower(&str[0], str.length());
}
inline void ToLower(char* str)
{
if (str == nullptr)
return;
details::ToLower(str, strlen(str));
}
inline std::string CopyLower(std::string const& str)
{
std::string r(str);
details::ToLower(&r[0], r.length());
return r;
}
inline std::string CopyLower(const char* str)
{
std::string r(str == nullptr ? "" : str);
details::ToLower(&r[0], r.length());
return r;
}
inline std::string CopyLower(System::StringView str)
{
std::string r = str.to_string();
details::ToLower(&r[0], r.length());
return r;
}
inline void ToUpper(std::string& str)
{
details::ToUpper(&str[0], str.length());
}
inline void ToUpper(char* str)
{
if (str == nullptr)
return;
details::ToUpper(str, strlen(str));
}
inline std::string CopyUpper(std::string const& str)
{
std::string r(str);
details::ToUpper(&r[0], r.length());
return r;
}
inline std::string CopyUpper(const char* str)
{
std::string r(str == nullptr ? "" : str);
details::ToUpper(&r[0], r.length());
return r;
}
inline std::string CopyUpper(System::StringView str)
{
std::string r = str.to_string();
details::ToUpper(&r[0], r.length());
return r;
}
template<typename IteratorType>
inline std::string Join(IteratorType begin, IteratorType end, const std::string& sep)
{
std::string res;
if (begin != end)
res = *begin++;
while (begin != end)
{
res += sep;
res += *begin++;
}
return res;
}
template<typename T>
inline std::string Join(T const& container, const std::string& sep)
{
return Join(std::begin(container), std::end(container), sep);
}
// Clone a string allocated with the "new" operator, if str is nullptr, an empty string ("") will be returned, NOT nullptr !
inline char* CloneString(const char* str)
{
if (str == nullptr)
return details::CloneString(System::StringView(""));
return details::CloneString(System::StringView(str, strlen(str)));
}
inline char* CloneString(std::string const& str)
{
return details::CloneString(System::StringView(str));
}
inline char* CloneString(System::StringView str)
{
return details::CloneString(str);
}
// Will always end the C-String with a null char.
inline size_t CopyString(const char* src, char* dst, size_t dst_size)
{
if (src == nullptr)
return details::CopyString(System::StringView(""), dst, dst_size);
return details::CopyString(System::StringView(src, strlen(src)), dst, dst_size);
}
inline size_t CopyString(System::StringView src, char* dst, size_t dst_size)
{
return details::CopyString(src, dst, dst_size);
}
inline size_t CopyString(std::string const& src, char* dst, size_t dst_size)
{
return details::CopyString(System::StringView(src), dst, dst_size);
}
template<size_t N>
inline size_t CopyString(const char* src, char(&dst)[N])
{
if (src == nullptr)
return details::CopyString(System::StringView(""), dst, N);
return details::CopyString(System::StringView(src, strlen(src)), dst, N);
}
template<size_t N>
inline size_t CopyString(System::StringView src, char(&dst)[N])
{
return details::CopyString(src, dst, N);
}
template<size_t N>
inline size_t CopyString(std::string const& src, char(&dst)[N])
{
return details::CopyString(System::StringView(src), dst, N);
}
}
}