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/*
* This file is part of the Omni C++ framework
*
* Copyright (c) 2016, Zeriph Enterprises, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of Zeriph, Zeriph Enterprises, LLC, nor the names
* of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ZERIPH AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ZERIPH AND CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(OMNI_STRING_T_HPP)
#define OMNI_STRING_T_HPP 1
#include <omni/defs/global.hpp>
#include <omni/types/char_t.hpp>
#include <string>
#include <sstream>
// defines the string types to use for different string processing
#if defined(OMNI_UNICODE)
#define OMNI_STRING_T std::wstring // Defines a wide character string type
#define OMNI_SSTREAM_T std::wstringstream
#define OMNI_STR_WIDEN(v) L##v
#else
#define OMNI_STRING_T std::string // Defines an standard character string type
#define OMNI_SSTREAM_T std::stringstream
#define OMNI_STR_WIDEN(v) v
#endif
#if !defined(OMNI_STRW)
// DEV_NOTE: for a macro that always widens, use OMNI_WSTR (from helper.hpp)
#define OMNI_STRW(v) OMNI_STR_WIDEN(v)
#endif
namespace omni {
typedef OMNI_STRING_T string_t;
typedef OMNI_SSTREAM_T sstream_t;
/** @internal framework helper */
namespace string_util {
/** @internal framework helper */
template < typename T >
inline std::string to_string(const T& val)
{
std::stringstream o;
o << val;
return o.str();
}
/** @internal framework helper */
inline std::string to_string(bool val)
{
return (val ? "true" : "false");
}
/** @internal framework helper */
inline std::string to_string(const std::wstring& str)
{
if (str.empty()) { return std::string(); }
std::size_t sz = str.length();
#if defined(OMNI_WIN_API)
int nd = ::WideCharToMultiByte(CP_UTF8, 0, &str[0], sz, NULL, 0, NULL, NULL);
if (nd != 0) {
std::string cret(nd, '\0');
int w = ::WideCharToMultiByte(CP_UTF8, 0, &str[0], sz, &cret[0], nd, NULL, NULL);
if (w != 0) {
if (w != sz) {
OMNI_ERR_RETV_FW("wrote " << w << " but expected size of " << sz, omni::invalid_size_written(), std::string())
}
return cret;
}
}
OMNI_THROW_FW(omni::invalid_size_written())
return std::string();
#else
std::string cret(sz, '\0');
std::size_t w = std::wcstombs(&cret[0], str.c_str(), sz);
if (w != 0) {
if (w != sz) {
OMNI_ERR_RETV_FW("wrote " << w << " but expected size of " << sz, omni::invalid_size_written(), std::string())
}
return cret;
}
OMNI_THROW_FW(omni::invalid_size_written())
return std::string();
#endif
}
/** @internal framework helper */
inline std::string to_string(const wchar_t* str)
{
if (str) { return omni::string_util::to_string(std::wstring(str)); }
OMNI_ERR_RETV_FW("Null pointer specified", omni::null_pointer_exception(), std::string())
}
/** @internal framework helper */
template < std::size_t X >
inline std::string to_string(const wchar_t (&str)[X])
{
return omni::string_util::to_string(std::wstring(str));
}
/** @internal framework helper */
inline std::string to_string(const char* str)
{
if (str) { return std::string(str); }
OMNI_ERR_RETV_FW("Null pointer specified", omni::null_pointer_exception(), std::string())
}
/** @internal framework helper */
template < std::size_t X >
inline std::string to_string(const char (&str)[X])
{
return std::string(str);
}
/** @internal framework helper */
inline std::string to_string(const std::string& str)
{
return str;
}
/** @internal framework helper */
template < typename T >
inline std::wstring to_wstring(const T& val)
{
std::wstringstream o;
o << val;
return o.str();
}
/** @internal framework helper */
inline std::wstring to_wstring(bool val)
{
return (val ? OMNI_WSTR("true") : OMNI_WSTR("false"));
}
/** @internal framework helper */
inline std::wstring to_wstring(const std::string& str)
{
if (str.empty()) { return std::wstring(); }
std::size_t sz = str.length();
#if defined(OMNI_WIN_API)
int nd = ::MultiByteToWideChar(CP_UTF8, 0, &str[0], sz, NULL, 0);
if (nd != 0) {
std::wstring wret(nd, L'\0');
int w = ::MultiByteToWideChar(CP_UTF8, 0, &str[0], sz, &wret[0], nd);
if (w != 0) {
if (w != sz) {
OMNI_ERR_RETV_FW("wrote " << w << " but expected size of " << sz, omni::invalid_size_written(), std::wstring())
}
return wret;
}
}
OMNI_THROW_FW(omni::invalid_size_written())
return std::wstring();
#else
std::wstring wret(sz, L'\0');
std::size_t w = std::mbstowcs(&wret[0], str.c_str(), sz);
if (w != 0) {
if (w != sz) {
OMNI_ERR_RETV_FW("wrote " << w << " but expected size of " << sz, omni::invalid_size_written(), std::wstring())
}
return wret;
}
OMNI_THROW_FW(omni::invalid_size_written())
return std::wstring();
#endif
}
/** @internal framework helper */
inline std::wstring to_wstring(const char* str)
{
if (str) { return omni::string_util::to_wstring(std::string(str)); }
OMNI_ERR_RETV_FW("Null pointer specified", omni::null_pointer_exception(), std::wstring())
}
/** @internal framework helper */
template < std::size_t X >
inline std::wstring to_wstring(const char (&str)[X])
{
return omni::string_util::to_wstring(std::string(str));
}
/** @internal framework helper */
inline std::wstring to_wstring(const wchar_t* str)
{
if (str) { return std::wstring(str); }
OMNI_ERR_RETV_FW("Null pointer specified", omni::null_pointer_exception(), std::wstring())
}
/** @internal framework helper */
template < std::size_t X >
inline std::wstring to_wstring(const wchar_t (&str)[X])
{
return std::wstring(str);
}
/** @internal framework helper */
inline std::wstring to_wstring(const std::wstring& str)
{
return str;
}
/** @internal framework helper */
template < typename T >
inline omni::string_t to_string_t(const T& val)
{
omni::sstream_t o;
o << val;
return o.str();
}
/** @internal framework helper */
inline omni::string_t to_string_t(bool val)
{
#if defined(OMNI_UNICODE)
return (val ? OMNI_WSTR("true") : OMNI_WSTR("false"));
#else
return (val ? "true" : "false");
#endif
}
/** @internal framework helper */
inline omni::string_t to_string_t(const std::wstring& str)
{
#if defined(OMNI_UNICODE)
return str;
#else
return omni::string_util::to_string(str);
#endif
}
/** @internal framework helper */
inline omni::string_t to_string_t(const wchar_t* str)
{
if (str) { return omni::string_util::to_string_t(std::wstring(str)); }
OMNI_ERR_RETV_FW("Null pointer specified", omni::null_pointer_exception(), omni::string_t())
}
/** @internal framework helper */
template < std::size_t X >
inline omni::string_t to_string_t(const wchar_t (&str)[X])
{
#if defined(OMNI_UNICODE)
return std::wstring(str);
#else
return omni::string_util::to_string(str);
#endif
}
/** @internal framework helper */
inline omni::string_t to_string_t(const std::string& str)
{
#if defined(OMNI_UNICODE)
return omni::string_util::to_wstring(str);
#else
return str;
#endif
}
/** @internal framework helper */
inline omni::string_t to_string_t(const char* str)
{
if (str) { return omni::string_util::to_string_t(std::string(str)); }
OMNI_ERR_RETV_FW("Null pointer specified", omni::null_pointer_exception(), omni::string_t())
}
/** @internal framework helper */
template < std::size_t X >
inline omni::string_t to_string_t(const char (&str)[X])
{
#if defined(OMNI_UNICODE)
return omni::string_util::to_wstring(str);
#else
return std::string(str);
#endif
}
/** @internal framework helper */
template < typename std_string_t >
class omni_internal
{
public:
template < typename T >
static std_string_t lexical_cast(const T& val)
{
return val;
}
};
/** @internal framework helper */
template <>
class omni_internal<std::wstring>
{
public:
template < typename T >
inline static std::wstring lexical_cast(const T& val)
{
return omni::string_util::to_wstring(val);
}
};
/** @internal framework helper */
template <>
class omni_internal<std::string>
{
public:
template < typename T >
inline static std::string lexical_cast(const T& val)
{
return omni::string_util::to_string(val);
}
};
}
}
#endif // OMNI_STRING_T_HPP