447 lines
14 KiB
C
447 lines
14 KiB
C
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/*
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* mptString.h
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* ----------
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* Purpose: Small string-related utilities, number and message formatting.
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* Notes : Currently none.
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* Authors: OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#pragma once
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#include "openmpt/all/BuildSettings.hpp"
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#include "mpt/base/alloc.hpp"
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#include "mpt/base/span.hpp"
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#include "mpt/string/types.hpp"
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#include "mpt/string/utility.hpp"
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#include "mptBaseTypes.h"
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#include <algorithm>
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#include <limits>
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#include <string>
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#include <string_view>
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#include <cstring>
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OPENMPT_NAMESPACE_BEGIN
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namespace mpt
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{
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namespace String
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{
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template <typename Tstring, typename Tstring2, typename Tstring3>
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inline Tstring Replace(Tstring str, const Tstring2 &oldStr, const Tstring3 &newStr)
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{
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return mpt::replace(str, oldStr, newStr);
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}
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} // namespace String
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enum class Charset {
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UTF8,
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ASCII, // strictly 7-bit ASCII
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ISO8859_1,
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ISO8859_15,
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CP850,
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CP437,
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CP437AMS,
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CP437AMS2,
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Windows1252,
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Amiga,
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RISC_OS,
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ISO8859_1_no_C1,
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ISO8859_15_no_C1,
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Amiga_no_C1,
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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Locale, // CP_ACP on windows, current C locale otherwise
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#endif // MPT_ENABLE_CHARSET_LOCALE
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};
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// source code / preprocessor (i.e. # token)
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inline constexpr Charset CharsetSource = Charset::ASCII;
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// debug log files
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inline constexpr Charset CharsetLogfile = Charset::UTF8;
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// std::clog / std::cout / std::cerr
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#if defined(MODPLUG_TRACKER) && MPT_OS_WINDOWS && defined(MPT_ENABLE_CHARSET_LOCALE)
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inline constexpr Charset CharsetStdIO = Charset::Locale;
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#else
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inline constexpr Charset CharsetStdIO = Charset::UTF8;
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#endif
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// getenv
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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inline constexpr Charset CharsetEnvironment = Charset::Locale;
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#else
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inline constexpr Charset CharsetEnvironment = Charset::UTF8;
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#endif
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// std::exception::what()
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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inline constexpr Charset CharsetException = Charset::Locale;
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#else
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inline constexpr Charset CharsetException = Charset::UTF8;
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#endif
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// Checks if the std::string represents an UTF8 string.
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// This is currently implemented as converting to std::wstring and back assuming UTF8 both ways,
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// and comparing the result to the original string.
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// Caveats:
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// - can give false negatives because of possible unicode normalization during conversion
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// - can give false positives if the 8bit encoding contains high-ascii only in valid utf8 groups
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// - slow because of double conversion
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bool IsUTF8(const std::string &str);
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#if MPT_WSTRING_CONVERT
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// Convert to a wide character string.
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// The wide encoding is UTF-16 or UTF-32, based on sizeof(wchar_t).
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// If str does not contain any invalid characters, this conversion is lossless.
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// Invalid source bytes will be replaced by some replacement character or string.
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inline std::wstring ToWide(const std::wstring &str) { return str; }
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inline std::wstring ToWide(const wchar_t * str) { return (str ? std::wstring(str) : std::wstring()); }
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std::wstring ToWide(Charset from, const std::string &str);
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inline std::wstring ToWide(Charset from, const char * str) { return ToWide(from, str ? std::string(str) : std::string()); }
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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std::wstring ToWide(const mpt::lstring &str);
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#endif // MPT_ENABLE_CHARSET_LOCALE
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#endif
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// Convert to a string encoded in the 'to'-specified character set.
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// If str does not contain any invalid characters,
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// this conversion will be lossless iff, and only iff,
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// 'to' is UTF8.
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// Invalid source bytes or characters that are not representable in the
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// destination charset will be replaced by some replacement character or string.
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#if MPT_WSTRING_CONVERT
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std::string ToCharset(Charset to, const std::wstring &str);
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inline std::string ToCharset(Charset to, const wchar_t * str) { return ToCharset(to, str ? std::wstring(str) : std::wstring()); }
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#endif
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std::string ToCharset(Charset to, Charset from, const std::string &str);
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inline std::string ToCharset(Charset to, Charset from, const char * str) { return ToCharset(to, from, str ? std::string(str) : std::string()); }
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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std::string ToCharset(Charset to, const mpt::lstring &str);
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#endif // MPT_ENABLE_CHARSET_LOCALE
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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#if MPT_WSTRING_CONVERT
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mpt::lstring ToLocale(const std::wstring &str);
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inline mpt::lstring ToLocale(const wchar_t * str) { return ToLocale(str ? std::wstring(str): std::wstring()); }
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#endif
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mpt::lstring ToLocale(Charset from, const std::string &str);
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inline mpt::lstring ToLocale(Charset from, const char * str) { return ToLocale(from, str ? std::string(str): std::string()); }
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inline mpt::lstring ToLocale(const mpt::lstring &str) { return str; }
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#endif // MPT_ENABLE_CHARSET_LOCALE
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#if MPT_OS_WINDOWS
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#if MPT_WSTRING_CONVERT
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mpt::winstring ToWin(const std::wstring &str);
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inline mpt::winstring ToWin(const wchar_t * str) { return ToWin(str ? std::wstring(str): std::wstring()); }
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#endif
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mpt::winstring ToWin(Charset from, const std::string &str);
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inline mpt::winstring ToWin(Charset from, const char * str) { return ToWin(from, str ? std::string(str): std::string()); }
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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mpt::winstring ToWin(const mpt::lstring &str);
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#endif // MPT_ENABLE_CHARSET_LOCALE
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#endif // MPT_OS_WINDOWS
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#if defined(MPT_WITH_MFC)
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#if !(MPT_WSTRING_CONVERT)
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#error "MFC depends on MPT_WSTRING_CONVERT)"
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#endif
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// Convert to a MFC CString. The CString encoding depends on UNICODE.
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// This should also be used when converting to TCHAR strings.
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// If UNICODE is defined, this is a completely lossless operation.
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inline CString ToCString(const CString &str) { return str; }
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CString ToCString(const std::wstring &str);
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inline CString ToCString(const wchar_t * str) { return ToCString(str ? std::wstring(str) : std::wstring()); }
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CString ToCString(Charset from, const std::string &str);
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inline CString ToCString(Charset from, const char * str) { return ToCString(from, str ? std::string(str) : std::string()); }
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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CString ToCString(const mpt::lstring &str);
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mpt::lstring ToLocale(const CString &str);
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#endif // MPT_ENABLE_CHARSET_LOCALE
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#if MPT_OS_WINDOWS
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mpt::winstring ToWin(const CString &str);
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#endif // MPT_OS_WINDOWS
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// Convert from a MFC CString. The CString encoding depends on UNICODE.
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// This should also be used when converting from TCHAR strings.
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// If UNICODE is defined, this is a completely lossless operation.
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std::wstring ToWide(const CString &str);
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std::string ToCharset(Charset to, const CString &str);
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#endif // MPT_WITH_MFC
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#define UC_(x) MPT_UCHAR(x)
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#define UL_(x) MPT_ULITERAL(x)
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#define U_(x) MPT_USTRING(x)
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#if MPT_USTRING_MODE_WIDE
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#if !(MPT_WSTRING_CONVERT)
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#error "MPT_USTRING_MODE_WIDE depends on MPT_WSTRING_CONVERT)"
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#endif
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inline mpt::ustring ToUnicode(const std::wstring &str) { return str; }
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inline mpt::ustring ToUnicode(const wchar_t * str) { return (str ? std::wstring(str) : std::wstring()); }
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inline mpt::ustring ToUnicode(Charset from, const std::string &str) { return ToWide(from, str); }
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inline mpt::ustring ToUnicode(Charset from, const char * str) { return ToUnicode(from, str ? std::string(str) : std::string()); }
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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inline mpt::ustring ToUnicode(const mpt::lstring &str) { return ToWide(str); }
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#endif // MPT_ENABLE_CHARSET_LOCALE
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#if defined(MPT_WITH_MFC)
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inline mpt::ustring ToUnicode(const CString &str) { return ToWide(str); }
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#endif // MFC
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#else // !MPT_USTRING_MODE_WIDE
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inline mpt::ustring ToUnicode(const mpt::ustring &str) { return str; }
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#if MPT_WSTRING_CONVERT
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mpt::ustring ToUnicode(const std::wstring &str);
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inline mpt::ustring ToUnicode(const wchar_t * str) { return ToUnicode(str ? std::wstring(str) : std::wstring()); }
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#endif
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mpt::ustring ToUnicode(Charset from, const std::string &str);
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inline mpt::ustring ToUnicode(Charset from, const char * str) { return ToUnicode(from, str ? std::string(str) : std::string()); }
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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mpt::ustring ToUnicode(const mpt::lstring &str);
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#endif // MPT_ENABLE_CHARSET_LOCALE
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#if defined(MPT_WITH_MFC)
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mpt::ustring ToUnicode(const CString &str);
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#endif // MPT_WITH_MFC
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#endif // MPT_USTRING_MODE_WIDE
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#if MPT_USTRING_MODE_WIDE
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#if !(MPT_WSTRING_CONVERT)
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#error "MPT_USTRING_MODE_WIDE depends on MPT_WSTRING_CONVERT)"
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#endif
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// nothing, std::wstring overloads will catch all stuff
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#else // !MPT_USTRING_MODE_WIDE
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#if MPT_WSTRING_CONVERT
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std::wstring ToWide(const mpt::ustring &str);
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#endif
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std::string ToCharset(Charset to, const mpt::ustring &str);
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#if defined(MPT_ENABLE_CHARSET_LOCALE)
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mpt::lstring ToLocale(const mpt::ustring &str);
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#endif // MPT_ENABLE_CHARSET_LOCALE
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#if MPT_OS_WINDOWS
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mpt::winstring ToWin(const mpt::ustring &str);
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#endif // MPT_OS_WINDOWS
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#if defined(MPT_WITH_MFC)
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CString ToCString(const mpt::ustring &str);
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#endif // MPT_WITH_MFC
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#endif // MPT_USTRING_MODE_WIDE
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// The MPT_UTF8 allows specifying UTF8 char arrays.
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// The resulting type is mpt::ustring and the construction might require runtime translation,
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// i.e. it is NOT generally available at compile time.
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// Use explicit UTF8 encoding,
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// i.e. U+00FC (LATIN SMALL LETTER U WITH DIAERESIS) would be written as "\xC3\xBC".
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#define MPT_UTF8(x) mpt::ToUnicode(mpt::Charset::UTF8, x)
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mpt::ustring ToUnicode(uint16 codepage, mpt::Charset fallback, const std::string &str);
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char ToLowerCaseAscii(char c);
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char ToUpperCaseAscii(char c);
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std::string ToLowerCaseAscii(std::string s);
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std::string ToUpperCaseAscii(std::string s);
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int CompareNoCaseAscii(const char *a, const char *b, std::size_t n);
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int CompareNoCaseAscii(std::string_view a, std::string_view b);
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int CompareNoCaseAscii(const std::string &a, const std::string &b);
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#if defined(MODPLUG_TRACKER)
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mpt::ustring ToLowerCase(const mpt::ustring &s);
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mpt::ustring ToUpperCase(const mpt::ustring &s);
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#endif // MODPLUG_TRACKER
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} // namespace mpt
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// The AnyString types are meant to be used as function argument types only,
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// and only during the transition phase to all-unicode strings in the whole codebase.
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// Using an AnyString type as function argument avoids the need to overload a function for all the
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// different string types that we currently have.
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// Warning: These types will silently do charset conversions. Only use them when this can be tolerated.
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// BasicAnyString is convertable to mpt::ustring and constructable from any string at all.
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template <mpt::Charset charset = mpt::Charset::UTF8, bool tryUTF8 = true>
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class BasicAnyString : public mpt::ustring
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{
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private:
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static mpt::ustring From8bit(const std::string &str)
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{
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if constexpr(charset == mpt::Charset::UTF8)
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{
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return mpt::ToUnicode(mpt::Charset::UTF8, str);
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} else
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{
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// auto utf8 detection
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if constexpr(tryUTF8)
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{
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if(mpt::IsUTF8(str))
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{
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return mpt::ToUnicode(mpt::Charset::UTF8, str);
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} else
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{
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return mpt::ToUnicode(charset, str);
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}
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} else
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{
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return mpt::ToUnicode(charset, str);
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}
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}
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}
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public:
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// 8 bit
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BasicAnyString(const char *str) : mpt::ustring(From8bit(str ? str : std::string())) { }
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||
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BasicAnyString(const std::string str) : mpt::ustring(From8bit(str)) { }
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||
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||
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|
// locale
|
||
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|
#if defined(MPT_ENABLE_CHARSET_LOCALE)
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||
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BasicAnyString(const mpt::lstring str) : mpt::ustring(mpt::ToUnicode(str)) { }
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||
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|
#endif // MPT_ENABLE_CHARSET_LOCALE
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||
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|
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||
|
|
// unicode
|
||
|
|
BasicAnyString(const mpt::ustring &str) : mpt::ustring(str) { }
|
||
|
|
BasicAnyString(mpt::ustring &&str) : mpt::ustring(std::move(str)) { }
|
||
|
|
#if MPT_USTRING_MODE_UTF8 && MPT_WSTRING_CONVERT
|
||
|
|
BasicAnyString(const std::wstring &str) : mpt::ustring(mpt::ToUnicode(str)) { }
|
||
|
|
#endif
|
||
|
|
#if MPT_WSTRING_CONVERT
|
||
|
|
BasicAnyString(const wchar_t *str) : mpt::ustring(str ? mpt::ToUnicode(str) : mpt::ustring()) { }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// mfc
|
||
|
|
#if defined(MPT_WITH_MFC)
|
||
|
|
BasicAnyString(const CString &str) : mpt::ustring(mpt::ToUnicode(str)) { }
|
||
|
|
#endif // MPT_WITH_MFC
|
||
|
|
|
||
|
|
// fallback for custom string types
|
||
|
|
template <typename Tstring> BasicAnyString(const Tstring &str) : mpt::ustring(mpt::ToUnicode(str)) { }
|
||
|
|
template <typename Tstring> BasicAnyString(Tstring &&str) : mpt::ustring(mpt::ToUnicode(std::forward<Tstring>(str))) { }
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
// AnyUnicodeString is convertable to mpt::ustring and constructable from any unicode string,
|
||
|
|
class AnyUnicodeString : public mpt::ustring
|
||
|
|
{
|
||
|
|
|
||
|
|
public:
|
||
|
|
|
||
|
|
// locale
|
||
|
|
#if defined(MPT_ENABLE_CHARSET_LOCALE)
|
||
|
|
AnyUnicodeString(const mpt::lstring &str) : mpt::ustring(mpt::ToUnicode(str)) { }
|
||
|
|
#endif // MPT_ENABLE_CHARSET_LOCALE
|
||
|
|
|
||
|
|
// unicode
|
||
|
|
AnyUnicodeString(const mpt::ustring &str) : mpt::ustring(str) { }
|
||
|
|
AnyUnicodeString(mpt::ustring &&str) : mpt::ustring(std::move(str)) { }
|
||
|
|
#if MPT_USTRING_MODE_UTF8 && MPT_WSTRING_CONVERT
|
||
|
|
AnyUnicodeString(const std::wstring &str) : mpt::ustring(mpt::ToUnicode(str)) { }
|
||
|
|
#endif
|
||
|
|
#if MPT_WSTRING_CONVERT
|
||
|
|
AnyUnicodeString(const wchar_t *str) : mpt::ustring(str ? mpt::ToUnicode(str) : mpt::ustring()) { }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// mfc
|
||
|
|
#if defined(MPT_WITH_MFC)
|
||
|
|
AnyUnicodeString(const CString &str) : mpt::ustring(mpt::ToUnicode(str)) { }
|
||
|
|
#endif // MPT_WITH_MFC
|
||
|
|
|
||
|
|
// fallback for custom string types
|
||
|
|
template <typename Tstring> AnyUnicodeString(const Tstring &str) : mpt::ustring(mpt::ToUnicode(str)) { }
|
||
|
|
template <typename Tstring> AnyUnicodeString(Tstring &&str) : mpt::ustring(mpt::ToUnicode(std::forward<Tstring>(str))) { }
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
// AnyString
|
||
|
|
// Try to do the smartest auto-magic we can do.
|
||
|
|
#if defined(MPT_ENABLE_CHARSET_LOCALE)
|
||
|
|
using AnyString = BasicAnyString<mpt::Charset::Locale, true>;
|
||
|
|
#elif MPT_OS_WINDOWS
|
||
|
|
using AnyString = BasicAnyString<mpt::Charset::Windows1252, true>;
|
||
|
|
#else
|
||
|
|
using AnyString = BasicAnyString<mpt::Charset::ISO8859_1, true>;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// AnyStringLocale
|
||
|
|
// char-based strings are assumed to be in locale encoding.
|
||
|
|
#if defined(MPT_ENABLE_CHARSET_LOCALE)
|
||
|
|
using AnyStringLocale = BasicAnyString<mpt::Charset::Locale, false>;
|
||
|
|
#else
|
||
|
|
using AnyStringLocale = BasicAnyString<mpt::Charset::UTF8, false>;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// AnyStringUTF8orLocale
|
||
|
|
// char-based strings are tried in UTF8 first, if this fails, locale is used.
|
||
|
|
#if defined(MPT_ENABLE_CHARSET_LOCALE)
|
||
|
|
using AnyStringUTF8orLocale = BasicAnyString<mpt::Charset::Locale, true>;
|
||
|
|
#else
|
||
|
|
using AnyStringUTF8orLocale = BasicAnyString<mpt::Charset::UTF8, false>;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// AnyStringUTF8
|
||
|
|
// char-based strings are assumed to be in UTF8.
|
||
|
|
using AnyStringUTF8 = BasicAnyString<mpt::Charset::UTF8, false>;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
OPENMPT_NAMESPACE_END
|