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Copy pathGSString.cpp
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2738 lines (2359 loc) · 73.7 KB
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//
// Copyright (c) Vectorworks, Inc.
// Use of this file is governed by the Nemetschek Vectorworks SDK License Agreement
// http://developer.vectorworks.net/index.php?title=Vectorworks_SDK_License
//
// TXString class implementation.
//
/* Includes */
/* -------- */
#include "Prefix/StdAfx.h"
#include "GSIntTypes.h"
#define _GSString_X_
#include <iostream>
#include <codecvt>
#include <iomanip>
#if GS_WIN
// For Unicode normalization form (precomposed v.s. decomposed)
// #include <WinNls.h>
#include <cstring>
#include <cctype>
#elif GS_LIN
#include <cstring>
#include <string>
#include <algorithm>
#else
//#include <AppKit/AppKit.h>
#endif
#include "GSString.h"
namespace VectorworksMVR
{
inline void utf32ToTXCharBuffer(char32_t input, TXChar* output);
inline void utf32BufferToTXCharBuffer(const char32_t* input, TXChar* output, size_t numInputChars = -1);
inline void txCharBufferToUtf32Buffer(const TXChar* input, char32_t* output, size_t bufElemNum = -1);
inline void utf8BufferToTXCharBuffer(const char* const input, TXChar* output, size_t inputLen);
//#######################################################################################
// TXString class
//#######################################################################################
//***********************************************************************************
// Constructors and destructor
//***********************************************************************************
//=======================================================================================
// Default constructor
TXString::TXString()
: charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Copy constructor
TXString::TXString(const TXString& src)
: stdUStr(src.stdUStr)
, charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Move constructor
TXString::TXString(TXString&& src)
: stdUStr(std::move(src.stdUStr))
, charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Copy constructor from StdUstr
TXString::TXString(const StdUStr& src)
: stdUStr(src)
, charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Move constructor from StdUStr
TXString::TXString(StdUStr&& src)
: stdUStr(std::move(src))
, charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Construct from a std string. On Windows, invalid chars are replaced with replacement
// characters. On Mac, the string is empty if there is any invalid chars.
TXString::TXString(const std::string& src,
ETXEncoding e) // ETXEncoding::eUTF8
: charPtr(nullptr)
, charBufSize(0)
{
SetStdUStrFromCharBuffer(src.data(), -1, e);
}
//=======================================================================================
// Construct from a std wstring.
#if GS_WIN
TXString::TXString(const std::wstring& src)
: charPtr(nullptr)
, charBufSize(0)
{
stdUStr = src.data();
}
#elif GS_LIN
// not defined
#elif GS_MAC
TXString::TXString(const std::wstring& src)
: charPtr(nullptr)
, charBufSize(0)
{
std::unique_ptr<TXChar[]> ucchars(new TXChar[src.length() * 2 + 1]);
utf32BufferToTXCharBuffer((const char32_t*)src.data(), ucchars.get());
stdUStr = ucchars.get();
}
#endif
//=======================================================================================
// Construct with initial size. size_t version.
TXString::TXString(size_t nInitialSize)
: stdUStr(nInitialSize, 0)
, charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Construct with initial capacity. int version.
TXString::TXString(int nInitialSize)
: stdUStr(nInitialSize, 0)
, charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Construct from a char buffer. On Windows, invalid chars are replaced with replacement
// characters. On Mac, the string is empty if there is any invalid chars.
TXString::TXString(const char* src,
ETXEncoding e) // ETXEncoding::eUTF8
: charPtr(nullptr)
, charBufSize(0)
{
SetStdUStrFromCharBuffer(src, -1, e);
}
//=======================================================================================
// Construct from a char buffer. On Windows, invalid chars are replaced with replacement
// characters. On Mac, the string is empty if there is any invalid chars.
TXString::TXString(const char* src,
size_t lenInBytes,
ETXEncoding e) // ETXEncoding::eUTF8
: charPtr(nullptr)
, charBufSize(0)
{
SetStdUStrFromCharBuffer(src, lenInBytes, e);
}
//=======================================================================================
// Construct from unsigned char buffer. UTF-8 is the default encoding.
TXString::TXString(const unsigned char* src,
ETXEncoding e) // ETXEncoding::eUTF8
: charPtr(nullptr)
, charBufSize(0)
{
if (src && *src != 0)
{
char charBuf[256];
// Copy bytes to the buffer.
strncpy(charBuf, (const char *)src + 1, src[0]);
// Add terminating character to the end of the buffer.
charBuf[src[0]] = 0;
// Set Unicode string.
SetStdUStrFromCharBuffer(charBuf, -1, e);
}
}
//=======================================================================================
// Construct from an unsiged short buffer.
TXString::TXString(const UCChar* src)
: charPtr(nullptr)
, charBufSize(0)
{
if (src)
{
stdUStr.assign((const TXChar*)src);
}
}
//=======================================================================================
// Construct from an unsiged short buffer. The first 'numUCChars' characters are used. The
// terminating character is NOT counted in numUCChars.
TXString::TXString(const UCChar* src, size_t numUCChars)
: charPtr(nullptr)
, charBufSize(0)
{
if (src)
{
// Determine the length of characters to use.
size_t length = 0;
while (length < numUCChars && src[length] != 0) ++length;
stdUStr.assign((const TXChar*)src, length);
}
}
//=======================================================================================
// Construct from a wchar_t buffer.
TXString::TXString(const wchar_t* src)
: charPtr(nullptr)
, charBufSize(0)
{
if (src)
{
#if GS_WIN
stdUStr = src;
#elif GS_LIN
std::u32string wStr((const char32_t*)src);
std::wstring_convert<std::codecvt_utf16<char32_t>, char32_t> convert;
std::string bytes = convert.to_bytes(wStr);
std::u16string result;
result.reserve(bytes.size() / 2);
for (size_t i = 0; i < bytes.size(); i += 2) {
result.push_back(static_cast<char16_t>(static_cast<unsigned char>(bytes[i]) * 256 + static_cast<unsigned char>(bytes[i + 1])));
}
stdUStr = result;
#else
std::unique_ptr<TXChar[]> ucchars(new TXChar[wcslen(src) * 2 + 1]);
utf32BufferToTXCharBuffer((const char32_t*)src, ucchars.get());
stdUStr = ucchars.get();
#endif
}
}
//=======================================================================================
// Construct from a wchar_t buffer. numWChars is the number of characters. Terminating
// character is NOT counted in numWChars.
TXString::TXString(const wchar_t* src, size_t numWChars)
: charPtr(nullptr)
, charBufSize(0)
{
if (src)
{
// Determine the length of characters to use.
size_t length = 0;
while (length < numWChars && src[length] != 0) ++length;
#if GS_WIN
stdUStr.assign(src, length);
#elif GS_LIN
std::u32string wSrc((const char32_t*)src, numWChars);
std::wstring_convert<std::codecvt_utf16<char32_t>, char32_t> convert;
std::string bytes = convert.to_bytes(wSrc);
std::u16string result;
result.reserve(bytes.size() / 2);
for (size_t i = 0; i < bytes.size(); i += 2) {
result.push_back(static_cast<char16_t>(static_cast<unsigned char>(bytes[i]) * 256 + static_cast<unsigned char>(bytes[i + 1])));
}
stdUStr = result;
#else
std::unique_ptr<TXChar[]> txChars(new TXChar[ length * 2 + 1]);
utf32BufferToTXCharBuffer((const char32_t*)src, txChars.get(), length);
stdUStr = txChars.get();
#endif
}
}
//=======================================================================================
// Fill the string with "count" number of "ch"
TXString::TXString(char ch, size_t count /* 1 */)
: stdUStr(count, (unsigned char)ch)
, charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Fill the string with "count" number of "ch"
TXString::TXString(unsigned char ch, size_t count /* 1 */)
: stdUStr(count, ch)
, charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Fill the string with "count" number of "ch"
TXString::TXString(UCChar ch, size_t count /* 1 */)
: stdUStr(count, ch)
, charPtr(nullptr)
, charBufSize(0)
{
}
//=======================================================================================
// Fill the string with "count" number of "ch"
#if GS_WIN
TXString::TXString(wchar_t ch, size_t count /* 1 */)
: stdUStr(count, ch)
, charPtr(nullptr)
, charBufSize(0)
{
}
#elif GS_LIN
TXString::TXString(wchar_t ch, size_t count /* 1 */)
: stdUStr(count, ch)
, charPtr(nullptr)
, charBufSize(0)
{
}
#else
TXString::TXString(wchar_t w, size_t count /* 1 */)
: charPtr(nullptr)
, charBufSize(0)
{
if((int)w <= 0xffff)
{
stdUStr.assign(count, (TXChar) w);
}
else
{
UCChar u[3];
utf32ToTXCharBuffer((char32_t)w, u);
for(int i = 0; i < count; ++i)
{
stdUStr.append(u);
}
}
}
#endif
//=======================================================================================
// Destructor
TXString::~TXString()
{
if (charPtr) delete charPtr;
}
//***********************************************************************************
// Assignments
//***********************************************************************************
//=======================================================================================
// Copy assignment operator
TXString& TXString::operator=(const TXString& src)
{
stdUStr = src.stdUStr;
return *this;
}
//=======================================================================================
// Move assignment operator
TXString& TXString::operator=(TXString&& src)
{
stdUStr = std::move(src.stdUStr);
return *this;
}
//=======================================================================================
// Assignment operator from std::string
TXString& TXString::operator=(const std::string& src)
{
SetStdUStrFromCharBuffer(src.data());
return *this;
}
//=======================================================================================
// Assignment operator from std::wstring
TXString& TXString::operator=(const std::wstring& src)
{
#if GS_WIN
stdUStr = src.data();
#elif GS_LIN
std::u32string wSrc((const char32_t*)src.data());
std::wstring_convert<std::codecvt_utf16<char32_t>, char32_t> convert;
std::string bytes = convert.to_bytes(wSrc);
std::u16string result;
result.reserve(bytes.size() / 2);
for (size_t i = 0; i < bytes.size(); i += 2) {
result.push_back(static_cast<char16_t>(static_cast<unsigned char>(bytes[i]) * 256 + static_cast<unsigned char>(bytes[i + 1])));
}
stdUStr = result;
#else
std::unique_ptr<TXChar[]> ucChars(new TXChar[src.length() * 2 + 1]);
utf32BufferToTXCharBuffer((const char32_t*)src.data(), ucChars.get());
stdUStr = ucChars.get();
#endif
return *this;
}
//=======================================================================================
// Assignment from a const char buffer. UTF-8 is the encoding. If 'src' is
// nullptr, the string is cleared.
TXString& TXString::operator=(const char* src)
{
if (src)
{
SetStdUStrFromCharBuffer(src);
}
else
{
stdUStr.clear();
}
return *this;
}
//=======================================================================================
// Assignment from a const unsigned char buffer. UTF-8 encoding is assumed. If 'src' is
// nullptr, the string is cleared.
TXString& TXString::operator=(const unsigned char* src)
{
if (src && *src != 0)
{
char charBuf[256];
std::strncpy(charBuf, (const char *)src + 1, src[0]);
charBuf[src[0]] = 0;
SetStdUStrFromCharBuffer(charBuf);
}
else
{
stdUStr.clear();
}
return *this;
}
//=======================================================================================
// Assignment from a const UCChar buffer. If 'src' is nullptr, the string is cleared.
TXString& TXString::operator=(const UCChar* src)
{
if (src)
{
stdUStr = (const TXChar*)src;
}
else
{
stdUStr.clear();
}
return *this;
}
//=======================================================================================
// Assignment from a const wchar_t buffer. If 'src' is nullptr, the string is cleared.
TXString& TXString::operator=(const wchar_t* src)
{
if (src)
{
#if GS_WIN
stdUStr = src;
#elif GS_LIN
TXString tx (src);
stdUStr = std::move(tx.stdUStr);
#else
TXString tx (src);
stdUStr = std::move(tx.stdUStr);
#endif
}
else
{
stdUStr.clear();
}
return *this;
}
//=======================================================================================
// Assignment from a char
TXString& TXString::operator=(char ch)
{
// On Windows, char to wchar_t conversion is not what is expected. Thus, char is
// converted to unsigned char.
stdUStr = (unsigned char)ch;
return *this;
}
//=======================================================================================
// Assignment from an unsigned char
TXString& TXString::operator=(unsigned char ch)
{
stdUStr = ch;
return *this;
}
//=======================================================================================
// Assignment from an UCChar
TXString& TXString::operator=(UCChar ch)
{
stdUStr = (TXChar)ch;
return *this;
}
//=======================================================================================
// Assignment from an wchar_t
TXString& TXString::operator=(wchar_t w)
{
#if GS_WIN
stdUStr = w;
#elif GS_LIN
// TODO
stdUStr = w;
#else
if((int) w <= 0xffff)
{
stdUStr = (TXChar) w;
}
else
{
UCChar u[3];
utf32ToTXCharBuffer((char32_t)w, u);
stdUStr = u;
}
#endif
return *this;
}
//***********************************************************************************
// Length related functions
//***********************************************************************************
//=======================================================================================
// Returns the number of characters. The terminal null character is NOT included.
size_t TXString::GetLength() const
{
return stdUStr.length();
}
//=======================================================================================
// Return the size in bytes. Terminal character is not counted.
size_t TXString::GetByteSize() const
{
return (stdUStr.length() * sizeof(TXChar));
}
//=======================================================================================
// Returns the number of bytes when encoding is Mac, Win, Sys, or UTF-8. Returns the
// number of UTF-16 code points when the encoding is UTF-16. UTF-16 encoding is added to
// support LenEncoding(...) VS function. To get the number of UTF-16 code points in C++
// code, TXString::GetLength() should be used. Terminal character is not counted.
size_t TXString::GetEncodingLength(ETXEncoding e) const
{
size_t encodingLen = 0;
if (e == ETXEncoding::eUTF16)
{
encodingLen = stdUStr.length();
}
else
{
PrepareCharBuffer(e);
encodingLen = strlen(charPtr);
}
return encodingLen;
}
//=======================================================================================
// Return true if string is empty. Return false otherwise.
bool TXString::IsEmpty() const
{
return stdUStr.empty();
}
//=======================================================================================
// Resize to 'len' characters. Return TXString itself.
TXString& TXString::SetLength(size_t len)
{
if (len < stdUStr.length())
{
stdUStr.resize(len);
TrimRightInvalidCharacter();
}
else
{
stdUStr.resize(len);
}
return *this;
}
//=======================================================================================
// Fill string with 'len' number of 'ch'. Always return true.
TXString& TXString::SetLength(size_t len, TXChar ch)
{
if (ch == 0)
{
stdUStr.clear();
}
else
{
stdUStr.resize(len, ch);
}
return *this;
}
//=======================================================================================
// Keep 'len' number of characters and reduce the length to 'len'. Null character is not
// counted in 'len'. If len is not less than the current length, does nothing.
TXString& TXString::Truncate(size_t len)
{
if (len < stdUStr.length())
{
stdUStr.resize(len);
TrimRightInvalidCharacter();
}
return *this;
}
//=======================================================================================
// Erase the contents. TXString becomes empty and length is zero.
TXString& TXString::Clear()
{
stdUStr.clear();
return *this;
}
//***********************************************************************************
// Element access
//***********************************************************************************
//=======================================================================================
// Return the reference of character at 'nIndex'. If 'nIndex' is invalid, a reference to
// a static TXChar (zero) is returned.
TXChar& TXString::operator[](ptrdiff_t nIndex)
{
//ASSERTN(kPChang, nIndex >= 0 && nIndex < (ptrdiff_t)stdUStr.length());
if (nIndex >= 0 && nIndex < (ptrdiff_t)stdUStr.length())
{
return stdUStr[nIndex];
}
else
{
static TXChar zero;
zero = 0;
return zero;
}
}
//=======================================================================================
// Return a copy of character at index 'nIndex'. If nIndex is out of range, 0 is returned.
TXChar TXString::operator[](ptrdiff_t nIndex) const
{
//ASSERTN(kPChang, nIndex >= 0 && nIndex < (ptrdiff_t)stdUStr.length());
if (nIndex >= 0 && nIndex < (ptrdiff_t)stdUStr.length())
{
return stdUStr[nIndex];
}
else
{
return 0;
}
}
//=======================================================================================
// Return a reference of the character at index 'nIndex'. If nIndex is out of range, a
// reference to a static TXChar (zero) is returned.
TXChar& TXString::GetAt(size_t nIndex)
{
//ASSERTN(kPChang, nIndex < stdUStr.length());
if (nIndex < stdUStr.length())
{
return stdUStr[nIndex];
}
else
{
static TXChar zero;
zero = 0;
return zero;
}
}
//=======================================================================================
// Return a copy of the character at index 'nIndex'. If nIndex is out of range, 0 is
// returned.
TXChar TXString::GetAt(size_t nIndex) const
{
//ASSERTN(kPChang, nIndex < stdUStr.length());
if (nIndex < stdUStr.length())
{
return stdUStr[nIndex];
}
else
{
return 0;
}
}
//=======================================================================================
// Return a reference of the last character. If this string is empty, returns dummy ref.
TXChar& TXString::GetLast()
{
//ASSERTN(kPChang, !stdUStr.empty());
if (stdUStr.empty())
{
static TXChar zero;
zero = 0;
return zero;
}
else
{
return stdUStr.back();
}
}
//=======================================================================================
// Return a copy of the last character. If this string is empty, returns 0.
TXChar TXString::GetLast() const
{
//ASSERTN(kPChang, !stdUStr.empty());
if (stdUStr.empty())
{
return 0;
}
else
{
return stdUStr.back();
}
}
//=======================================================================================
// Set character at index 'nIndex' to 'ch'. If nIndex is out of range, does nothing.
TXString& TXString::SetAt(size_t nIndex, TXChar ch)
{
//ASSERTN(kPChang, nIndex < stdUStr.length());
if (nIndex < stdUStr.length())
{
stdUStr[nIndex] = ch;
}
return *this;
}
//***************************************************************************************
// Concatenation
//***************************************************************************************
//=======================================================================================
// Extends string by appending another TXString object
TXString& TXString::operator+=(const TXString& src)
{
stdUStr += src.stdUStr;
return *this;
}
//=======================================================================================
// Concatenate const char buffer (UTF-8). If 'src' is nullptr, does nothing.
TXString& TXString::operator+=(const char* src)
{
//ASSERTN(kPChang, src != nullptr);
if (src != nullptr)
{
stdUStr += TXString(src).stdUStr;
}
return *this;
}
//=======================================================================================
// Concatenate const unsigned char buffer (UTF-8). If 'src' is nullptr, does nothing.
TXString& TXString::operator+=(const unsigned char *src)
{
if (src && *src != 0)
{
char charBuf[256];
strncpy(charBuf, (const char *)src + 1, src[0]);
charBuf[src[0]] = 0;
stdUStr += TXString(charBuf).stdUStr;
}
return *this;
}
//=======================================================================================
// Concatenate const UCChar buffer. If 'src' is nullptr, does nothing.
TXString& TXString::operator+=(const UCChar* src)
{
//ASSERTN(kPChang, src != nullptr);
if (src != nullptr)
{
stdUStr += (const TXChar*)src;
}
return *this;
}
//=======================================================================================
// Concatenate const wchar_t buffer. If 'src' is nullptr, does nothing.
TXString& TXString::operator+=(const wchar_t* src)
{
//ASSERTN(kPChang, src != nullptr);
if (src != nullptr)
{
#if GS_WIN
stdUStr += src;
#elif GS_LIN
stdUStr += TXString(src).stdUStr;
#else
stdUStr += TXString(src).stdUStr;
#endif
}
return *this;
}
//=======================================================================================
// Appends one char
TXString& TXString::operator+=(char ch)
{
stdUStr += (unsigned char)ch; // The casting is necessary on Windows.
return *this;
}
#ifdef GS_LIN
// Appends one char
TXString& TXString::operator+=(TXChar ch)
{
stdUStr += ch;
return *this;
}
#endif
//=======================================================================================
// Appends one unsigned char
TXString& TXString::operator+=(unsigned char ch)
{
stdUStr += ch;
return *this;
}
//=======================================================================================
// Appends one UCChar
TXString& TXString::operator+=(UCChar ch)
{
stdUStr += (TXChar)ch;
return *this;
}
//=======================================================================================
// Appends one wchar_t
TXString& TXString::operator+=(wchar_t w)
{
#if GS_WIN
stdUStr += w;
#elif GS_LIN
stdUStr += w;
#else
if((int) w <= 0xffff)
{
stdUStr += (TXChar) w;
}
else
{
UCChar u[3];
utf32ToTXCharBuffer(w, u);
stdUStr += u;
}
#endif
return *this;
}
//=======================================================================================
// Concatenates another TXString object
TXString& TXString::operator<<(const TXString& src)
{
stdUStr += src.stdUStr;
return *this;
}
//=======================================================================================
// Concatenates char buffer (UTF-8). If 'src' is nullptr, does nothing.
TXString& TXString::operator<<(const char* src)
{
return (*this += src);
}
//=======================================================================================
// Concatenates unsigned char buffer (UTF-8). If 'src' is nullptr, does nothing.
TXString& TXString::operator<<(const unsigned char *src)
{
return (*this += src);
}
//=======================================================================================
// Concatenates UCChar buffer. If 'src' is nullptr, does nothing.
TXString& TXString::operator<<(const UCChar* src)
{
return (*this += src);
}
//=======================================================================================
// Concatenates wchar_t buffer. If 'src' is nullptr, does nothing.
TXString& TXString::operator<<(const wchar_t* src)
{
return (*this += src);
}
//=======================================================================================
// Appends one char
TXString& TXString::operator<<(char ch)
{
stdUStr += (unsigned char)ch;
return *this;
}
//=======================================================================================
// Appends one unsigned char
TXString& TXString::operator<<(unsigned char ch)
{
stdUStr += ch;
return *this;
}
//=======================================================================================
// Appends one UCChar
TXString& TXString::operator<<(UCChar ch)
{
stdUStr += (TXChar)ch;
return *this;
}
//=======================================================================================
// Appends one wchar_t
TXString& TXString::operator<<(wchar_t ch)
{
return (*this += ch);
}
//=======================================================================================
// Appends signed int 32 number as string
TXString& TXString::operator<<(Sint32 n)
{
return (*this += std::to_string(n).c_str());
}
//=======================================================================================
// Appends one signed int 64 number as string
TXString& TXString::operator<<(Sint64 n)
{
return (*this += std::to_string(n).c_str());
}
//=======================================================================================
// Appends unsigned int 32 number as string
TXString& TXString::operator<<(Uint32 n)
{
return (*this += std::to_string(n).c_str());
}
//=======================================================================================
// Appends one unsigned int 64 number as string
TXString& TXString::operator<<(Uint64 n)
{
return (*this += std::to_string(n).c_str());
}
//=======================================================================================
// Appends one real number
TXString& TXString::operator<<(double number)
{
return (*this += std::to_string(number).c_str());
}
//=======================================================================================
// Appends one size_t number as string
#if GS_MAC // Uint64 is different than size_t on the mac
TXString& TXString::operator<<(size_t n)
{