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Diffstat (limited to 'core/fxcrt/include/fx_string.h')
| -rw-r--r-- | core/fxcrt/include/fx_string.h | 819 |
1 files changed, 819 insertions, 0 deletions
diff --git a/core/fxcrt/include/fx_string.h b/core/fxcrt/include/fx_string.h new file mode 100644 index 0000000000..4bca083dd0 --- /dev/null +++ b/core/fxcrt/include/fx_string.h @@ -0,0 +1,819 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#ifndef CORE_FXCRT_INCLUDE_FX_STRING_H_ +#define CORE_FXCRT_INCLUDE_FX_STRING_H_ + +#include <stdint.h> // For intptr_t. +#include <algorithm> + +#include "core/fxcrt/include/fx_memory.h" +#include "core/fxcrt/include/fx_system.h" + +class CFX_BinaryBuf; +class CFX_ByteString; +class CFX_WideString; + +// An immutable string with caller-provided storage which must outlive the +// string itself. +class CFX_ByteStringC { + public: + typedef FX_CHAR value_type; + + CFX_ByteStringC() { + m_Ptr = NULL; + m_Length = 0; + } + + CFX_ByteStringC(const uint8_t* ptr, FX_STRSIZE size) { + m_Ptr = ptr; + m_Length = size; + } + + CFX_ByteStringC(const FX_CHAR* ptr) { + m_Ptr = (const uint8_t*)ptr; + m_Length = ptr ? FXSYS_strlen(ptr) : 0; + } + + // |ch| must be an lvalue that outlives the the CFX_ByteStringC. However, + // the use of char rvalues are not caught at compile time. They are + // implicitly promoted to CFX_ByteString (see below) and then the + // CFX_ByteStringC is constructed from the CFX_ByteString via the alternate + // constructor below. The CFX_ByteString then typically goes out of scope + // and |m_Ptr| may be left pointing to invalid memory. Beware. + // TODO(tsepez): Mark single-argument string constructors as explicit. + CFX_ByteStringC(FX_CHAR& ch) { + m_Ptr = (const uint8_t*)&ch; + m_Length = 1; + } + + CFX_ByteStringC(const FX_CHAR* ptr, FX_STRSIZE len) { + m_Ptr = (const uint8_t*)ptr; + m_Length = (len == -1) ? FXSYS_strlen(ptr) : len; + } + + CFX_ByteStringC(const CFX_ByteStringC& src) { + m_Ptr = src.m_Ptr; + m_Length = src.m_Length; + } + + CFX_ByteStringC(const CFX_ByteString& src); + + CFX_ByteStringC& operator=(const FX_CHAR* src) { + m_Ptr = (const uint8_t*)src; + m_Length = m_Ptr ? FXSYS_strlen(src) : 0; + return *this; + } + + CFX_ByteStringC& operator=(const CFX_ByteStringC& src) { + m_Ptr = src.m_Ptr; + m_Length = src.m_Length; + return *this; + } + + CFX_ByteStringC& operator=(const CFX_ByteString& src); + + bool operator==(const char* ptr) const { + return FXSYS_strlen(ptr) == m_Length && + FXSYS_memcmp(ptr, m_Ptr, m_Length) == 0; + } + bool operator==(const CFX_ByteStringC& other) const { + return other.m_Length == m_Length && + FXSYS_memcmp(other.m_Ptr, m_Ptr, m_Length) == 0; + } + bool operator!=(const char* ptr) const { return !(*this == ptr); } + bool operator!=(const CFX_ByteStringC& other) const { + return !(*this == other); + } + + FX_DWORD GetID(FX_STRSIZE start_pos = 0) const; + + const uint8_t* GetPtr() const { return m_Ptr; } + + const FX_CHAR* GetCStr() const { return (const FX_CHAR*)m_Ptr; } + + FX_STRSIZE GetLength() const { return m_Length; } + + bool IsEmpty() const { return m_Length == 0; } + + uint8_t GetAt(FX_STRSIZE index) const { return m_Ptr[index]; } + + CFX_ByteStringC Mid(FX_STRSIZE index, FX_STRSIZE count = -1) const { + if (index < 0) { + index = 0; + } + if (index > m_Length) { + return CFX_ByteStringC(); + } + if (count < 0 || count > m_Length - index) { + count = m_Length - index; + } + return CFX_ByteStringC(m_Ptr + index, count); + } + + const uint8_t& operator[](size_t index) const { return m_Ptr[index]; } + + bool operator<(const CFX_ByteStringC& that) const { + int result = memcmp(m_Ptr, that.m_Ptr, std::min(m_Length, that.m_Length)); + return result < 0 || (result == 0 && m_Length < that.m_Length); + } + + protected: + const uint8_t* m_Ptr; + FX_STRSIZE m_Length; + + private: + void* operator new(size_t) throw() { return NULL; } +}; +inline bool operator==(const char* lhs, const CFX_ByteStringC& rhs) { + return rhs == lhs; +} +inline bool operator!=(const char* lhs, const CFX_ByteStringC& rhs) { + return rhs != lhs; +} +#define FXBSTR_ID(c1, c2, c3, c4) ((c1 << 24) | (c2 << 16) | (c3 << 8) | (c4)) + +// A mutable string with shared buffers using copy-on-write semantics that +// avoids the cost of std::string's iterator stability guarantees. +class CFX_ByteString { + public: + typedef FX_CHAR value_type; + + CFX_ByteString() : m_pData(nullptr) {} + + // Copy constructor. + CFX_ByteString(const CFX_ByteString& str); + + // Move constructor. + inline CFX_ByteString(CFX_ByteString&& other) { + m_pData = other.m_pData; + other.m_pData = nullptr; + } + + CFX_ByteString(char ch); + CFX_ByteString(const FX_CHAR* ptr) + : CFX_ByteString(ptr, ptr ? FXSYS_strlen(ptr) : 0) {} + + CFX_ByteString(const FX_CHAR* ptr, FX_STRSIZE len); + CFX_ByteString(const uint8_t* ptr, FX_STRSIZE len); + + CFX_ByteString(const CFX_ByteStringC& bstrc); + CFX_ByteString(const CFX_ByteStringC& bstrc1, const CFX_ByteStringC& bstrc2); + + ~CFX_ByteString(); + + static CFX_ByteString FromUnicode(const FX_WCHAR* ptr, FX_STRSIZE len = -1); + + static CFX_ByteString FromUnicode(const CFX_WideString& str); + + // Explicit conversion to C-style string. + const FX_CHAR* c_str() const { return m_pData ? m_pData->m_String : ""; } + + // Implicit conversion to C-style string -- deprecated. + operator const FX_CHAR*() const { return m_pData ? m_pData->m_String : ""; } + + // Explicit conversion to uint8_t*. + const uint8_t* raw_str() const { + return m_pData ? reinterpret_cast<const uint8_t*>(m_pData->m_String) + : nullptr; + } + + // Implicit conversiont to uint8_t* -- deprecated. + operator const uint8_t*() const { + return m_pData ? reinterpret_cast<const uint8_t*>(m_pData->m_String) + : nullptr; + } + + FX_STRSIZE GetLength() const { return m_pData ? m_pData->m_nDataLength : 0; } + + bool IsEmpty() const { return !GetLength(); } + + int Compare(const CFX_ByteStringC& str) const; + + bool Equal(const char* ptr) const; + bool Equal(const CFX_ByteStringC& str) const; + bool Equal(const CFX_ByteString& other) const; + + bool EqualNoCase(const CFX_ByteStringC& str) const; + + bool operator==(const char* ptr) const { return Equal(ptr); } + bool operator==(const CFX_ByteStringC& str) const { return Equal(str); } + bool operator==(const CFX_ByteString& other) const { return Equal(other); } + + bool operator!=(const char* ptr) const { return !(*this == ptr); } + bool operator!=(const CFX_ByteStringC& str) const { return !(*this == str); } + bool operator!=(const CFX_ByteString& other) const { + return !(*this == other); + } + + bool operator<(const CFX_ByteString& str) const { + int result = FXSYS_memcmp(c_str(), str.c_str(), + std::min(GetLength(), str.GetLength())); + return result < 0 || (result == 0 && GetLength() < str.GetLength()); + } + + void Empty(); + + const CFX_ByteString& operator=(const FX_CHAR* str); + + const CFX_ByteString& operator=(const CFX_ByteStringC& bstrc); + + const CFX_ByteString& operator=(const CFX_ByteString& stringSrc); + + const CFX_ByteString& operator=(const CFX_BinaryBuf& buf); + + void Load(const uint8_t* str, FX_STRSIZE len); + + const CFX_ByteString& operator+=(FX_CHAR ch); + + const CFX_ByteString& operator+=(const FX_CHAR* str); + + const CFX_ByteString& operator+=(const CFX_ByteString& str); + + const CFX_ByteString& operator+=(const CFX_ByteStringC& bstrc); + + uint8_t GetAt(FX_STRSIZE nIndex) const { + return m_pData ? m_pData->m_String[nIndex] : 0; + } + + uint8_t operator[](FX_STRSIZE nIndex) const { + return m_pData ? m_pData->m_String[nIndex] : 0; + } + + void SetAt(FX_STRSIZE nIndex, FX_CHAR ch); + + FX_STRSIZE Insert(FX_STRSIZE index, FX_CHAR ch); + + FX_STRSIZE Delete(FX_STRSIZE index, FX_STRSIZE count = 1); + + void Format(const FX_CHAR* lpszFormat, ...); + + void FormatV(const FX_CHAR* lpszFormat, va_list argList); + + void Reserve(FX_STRSIZE len); + + FX_CHAR* GetBuffer(FX_STRSIZE len); + + void ReleaseBuffer(FX_STRSIZE len = -1); + + CFX_ByteString Mid(FX_STRSIZE first) const; + + CFX_ByteString Mid(FX_STRSIZE first, FX_STRSIZE count) const; + + CFX_ByteString Left(FX_STRSIZE count) const; + + CFX_ByteString Right(FX_STRSIZE count) const; + + FX_STRSIZE Find(const CFX_ByteStringC& lpszSub, FX_STRSIZE start = 0) const; + + FX_STRSIZE Find(FX_CHAR ch, FX_STRSIZE start = 0) const; + + FX_STRSIZE ReverseFind(FX_CHAR ch) const; + + void MakeLower(); + + void MakeUpper(); + + void TrimRight(); + + void TrimRight(FX_CHAR chTarget); + + void TrimRight(const CFX_ByteStringC& lpszTargets); + + void TrimLeft(); + + void TrimLeft(FX_CHAR chTarget); + + void TrimLeft(const CFX_ByteStringC& lpszTargets); + + FX_STRSIZE Replace(const CFX_ByteStringC& lpszOld, + const CFX_ByteStringC& lpszNew); + + FX_STRSIZE Remove(FX_CHAR ch); + + CFX_WideString UTF8Decode() const; + + FX_DWORD GetID(FX_STRSIZE start_pos = 0) const; + +#define FXFORMAT_SIGNED 1 +#define FXFORMAT_HEX 2 +#define FXFORMAT_CAPITAL 4 + + static CFX_ByteString FormatInteger(int i, FX_DWORD flags = 0); + static CFX_ByteString FormatFloat(FX_FLOAT f, int precision = 0); + + protected: + // To ensure ref counts do not overflow, consider the worst possible case: + // the entire address space contains nothing but pointers to this object. + // Since the count increments with each new pointer, the largest value is + // the number of pointers that can fit into the address space. The size of + // the address space itself is a good upper bound on it; we need not go + // larger. + class StringData { + public: + static StringData* Create(int nLen); + void Retain() { ++m_nRefs; } + void Release() { + if (--m_nRefs <= 0) + FX_Free(this); + } + + intptr_t m_nRefs; // Would prefer ssize_t, but no windows support. + FX_STRSIZE m_nDataLength; + FX_STRSIZE m_nAllocLength; + FX_CHAR m_String[1]; + + private: + StringData(FX_STRSIZE dataLen, FX_STRSIZE allocLen) + : m_nRefs(1), m_nDataLength(dataLen), m_nAllocLength(allocLen) { + FXSYS_assert(dataLen >= 0); + FXSYS_assert(allocLen >= 0); + FXSYS_assert(dataLen <= allocLen); + m_String[dataLen] = 0; + } + ~StringData() = delete; + }; + + void AllocCopy(CFX_ByteString& dest, + FX_STRSIZE nCopyLen, + FX_STRSIZE nCopyIndex) const; + void AssignCopy(FX_STRSIZE nSrcLen, const FX_CHAR* lpszSrcData); + void ConcatCopy(FX_STRSIZE nSrc1Len, + const FX_CHAR* lpszSrc1Data, + FX_STRSIZE nSrc2Len, + const FX_CHAR* lpszSrc2Data); + void ConcatInPlace(FX_STRSIZE nSrcLen, const FX_CHAR* lpszSrcData); + void CopyBeforeWrite(); + void AllocBeforeWrite(FX_STRSIZE nLen); + + StringData* m_pData; + friend class fxcrt_ByteStringConcatInPlace_Test; +}; +inline CFX_ByteStringC::CFX_ByteStringC(const CFX_ByteString& src) { + m_Ptr = (const uint8_t*)src; + m_Length = src.GetLength(); +} +inline CFX_ByteStringC& CFX_ByteStringC::operator=(const CFX_ByteString& src) { + m_Ptr = (const uint8_t*)src; + m_Length = src.GetLength(); + return *this; +} + +inline bool operator==(const char* lhs, const CFX_ByteString& rhs) { + return rhs == lhs; +} +inline bool operator==(const CFX_ByteStringC& lhs, const CFX_ByteString& rhs) { + return rhs == lhs; +} +inline bool operator!=(const char* lhs, const CFX_ByteString& rhs) { + return rhs != lhs; +} +inline bool operator!=(const CFX_ByteStringC& lhs, const CFX_ByteString& rhs) { + return rhs != lhs; +} + +inline CFX_ByteString operator+(const CFX_ByteStringC& str1, + const CFX_ByteStringC& str2) { + return CFX_ByteString(str1, str2); +} +inline CFX_ByteString operator+(const CFX_ByteStringC& str1, + const FX_CHAR* str2) { + return CFX_ByteString(str1, str2); +} +inline CFX_ByteString operator+(const FX_CHAR* str1, + const CFX_ByteStringC& str2) { + return CFX_ByteString(str1, str2); +} +inline CFX_ByteString operator+(const CFX_ByteStringC& str1, FX_CHAR ch) { + return CFX_ByteString(str1, CFX_ByteStringC(ch)); +} +inline CFX_ByteString operator+(FX_CHAR ch, const CFX_ByteStringC& str2) { + return CFX_ByteString(ch, str2); +} +inline CFX_ByteString operator+(const CFX_ByteString& str1, + const CFX_ByteString& str2) { + return CFX_ByteString(str1, str2); +} +inline CFX_ByteString operator+(const CFX_ByteString& str1, FX_CHAR ch) { + return CFX_ByteString(str1, CFX_ByteStringC(ch)); +} +inline CFX_ByteString operator+(FX_CHAR ch, const CFX_ByteString& str2) { + return CFX_ByteString(ch, str2); +} +inline CFX_ByteString operator+(const CFX_ByteString& str1, + const FX_CHAR* str2) { + return CFX_ByteString(str1, str2); +} +inline CFX_ByteString operator+(const FX_CHAR* str1, + const CFX_ByteString& str2) { + return CFX_ByteString(str1, str2); +} +inline CFX_ByteString operator+(const CFX_ByteString& str1, + const CFX_ByteStringC& str2) { + return CFX_ByteString(str1, str2); +} +inline CFX_ByteString operator+(const CFX_ByteStringC& str1, + const CFX_ByteString& str2) { + return CFX_ByteString(str1, str2); +} +class CFX_WideStringC { + public: + typedef FX_WCHAR value_type; + + CFX_WideStringC() { + m_Ptr = NULL; + m_Length = 0; + } + + CFX_WideStringC(const FX_WCHAR* ptr) { + m_Ptr = ptr; + m_Length = ptr ? FXSYS_wcslen(ptr) : 0; + } + + CFX_WideStringC(FX_WCHAR& ch) { + m_Ptr = &ch; + m_Length = 1; + } + + CFX_WideStringC(const FX_WCHAR* ptr, FX_STRSIZE len) { + m_Ptr = ptr; + m_Length = (len == -1) ? FXSYS_wcslen(ptr) : len; + } + + CFX_WideStringC(const CFX_WideStringC& src) { + m_Ptr = src.m_Ptr; + m_Length = src.m_Length; + } + + CFX_WideStringC(const CFX_WideString& src); + + CFX_WideStringC& operator=(const FX_WCHAR* src) { + m_Ptr = src; + m_Length = FXSYS_wcslen(src); + return *this; + } + + CFX_WideStringC& operator=(const CFX_WideStringC& src) { + m_Ptr = src.m_Ptr; + m_Length = src.m_Length; + return *this; + } + + CFX_WideStringC& operator=(const CFX_WideString& src); + + bool operator==(const wchar_t* ptr) const { + return FXSYS_wcslen(ptr) == m_Length && wmemcmp(ptr, m_Ptr, m_Length) == 0; + } + bool operator==(const CFX_WideStringC& str) const { + return str.m_Length == m_Length && wmemcmp(str.m_Ptr, m_Ptr, m_Length) == 0; + } + bool operator!=(const wchar_t* ptr) const { return !(*this == ptr); } + bool operator!=(const CFX_WideStringC& str) const { return !(*this == str); } + + const FX_WCHAR* GetPtr() const { return m_Ptr; } + + FX_STRSIZE GetLength() const { return m_Length; } + + bool IsEmpty() const { return m_Length == 0; } + + FX_WCHAR GetAt(FX_STRSIZE index) const { return m_Ptr[index]; } + + CFX_WideStringC Left(FX_STRSIZE count) const { + if (count < 1) { + return CFX_WideStringC(); + } + if (count > m_Length) { + count = m_Length; + } + return CFX_WideStringC(m_Ptr, count); + } + + CFX_WideStringC Mid(FX_STRSIZE index, FX_STRSIZE count = -1) const { + if (index < 0) { + index = 0; + } + if (index > m_Length) { + return CFX_WideStringC(); + } + if (count < 0 || count > m_Length - index) { + count = m_Length - index; + } + return CFX_WideStringC(m_Ptr + index, count); + } + + CFX_WideStringC Right(FX_STRSIZE count) const { + if (count < 1) { + return CFX_WideStringC(); + } + if (count > m_Length) { + count = m_Length; + } + return CFX_WideStringC(m_Ptr + m_Length - count, count); + } + + const FX_WCHAR& operator[](size_t index) const { return m_Ptr[index]; } + + bool operator<(const CFX_WideStringC& that) const { + int result = wmemcmp(m_Ptr, that.m_Ptr, std::min(m_Length, that.m_Length)); + return result < 0 || (result == 0 && m_Length < that.m_Length); + } + + protected: + const FX_WCHAR* m_Ptr; + FX_STRSIZE m_Length; + + private: + void* operator new(size_t) throw() { return NULL; } +}; +inline bool operator==(const wchar_t* lhs, const CFX_WideStringC& rhs) { + return rhs == lhs; +} +inline bool operator!=(const wchar_t* lhs, const CFX_WideStringC& rhs) { + return rhs != lhs; +} +#define FX_WSTRC(wstr) CFX_WideStringC(wstr, FX_ArraySize(wstr) - 1) + +// A mutable string with shared buffers using copy-on-write semantics that +// avoids the cost of std::string's iterator stability guarantees. +class CFX_WideString { + public: + typedef FX_WCHAR value_type; + + CFX_WideString() : m_pData(nullptr) {} + + // Copy constructor. + CFX_WideString(const CFX_WideString& str); + + // Move constructor. + inline CFX_WideString(CFX_WideString&& other) { + m_pData = other.m_pData; + other.m_pData = nullptr; + } + + CFX_WideString(const FX_WCHAR* ptr) + : CFX_WideString(ptr, ptr ? FXSYS_wcslen(ptr) : 0) {} + + CFX_WideString(const FX_WCHAR* ptr, FX_STRSIZE len); + + CFX_WideString(FX_WCHAR ch); + + CFX_WideString(const CFX_WideStringC& str); + + CFX_WideString(const CFX_WideStringC& str1, const CFX_WideStringC& str2); + + ~CFX_WideString(); + + static CFX_WideString FromLocal(const CFX_ByteString& str); + + static CFX_WideString FromCodePage(const CFX_ByteString& str, + uint16_t codepage); + + static CFX_WideString FromUTF8(const char* str, FX_STRSIZE len); + + static CFX_WideString FromUTF16LE(const unsigned short* str, FX_STRSIZE len); + + static FX_STRSIZE WStringLength(const unsigned short* str); + + // Explicit conversion to C-style wide string. + const FX_WCHAR* c_str() const { return m_pData ? m_pData->m_String : L""; } + + // Implicit conversion to C-style wide string -- deprecated. + operator const FX_WCHAR*() const { return m_pData ? m_pData->m_String : L""; } + + void Empty(); + + bool IsEmpty() const { return !GetLength(); } + + FX_STRSIZE GetLength() const { return m_pData ? m_pData->m_nDataLength : 0; } + + const CFX_WideString& operator=(const FX_WCHAR* str); + + const CFX_WideString& operator=(const CFX_WideString& stringSrc); + + const CFX_WideString& operator=(const CFX_WideStringC& stringSrc); + + const CFX_WideString& operator+=(const FX_WCHAR* str); + + const CFX_WideString& operator+=(FX_WCHAR ch); + + const CFX_WideString& operator+=(const CFX_WideString& str); + + const CFX_WideString& operator+=(const CFX_WideStringC& str); + + bool operator==(const wchar_t* ptr) const { return Equal(ptr); } + bool operator==(const CFX_WideStringC& str) const { return Equal(str); } + bool operator==(const CFX_WideString& other) const { return Equal(other); } + + bool operator!=(const wchar_t* ptr) const { return !(*this == ptr); } + bool operator!=(const CFX_WideStringC& str) const { return !(*this == str); } + bool operator!=(const CFX_WideString& other) const { + return !(*this == other); + } + + bool operator<(const CFX_WideString& str) const { + int result = + wmemcmp(c_str(), str.c_str(), std::min(GetLength(), str.GetLength())); + return result < 0 || (result == 0 && GetLength() < str.GetLength()); + } + + FX_WCHAR GetAt(FX_STRSIZE nIndex) const { + return m_pData ? m_pData->m_String[nIndex] : 0; + } + + FX_WCHAR operator[](FX_STRSIZE nIndex) const { + return m_pData ? m_pData->m_String[nIndex] : 0; + } + + void SetAt(FX_STRSIZE nIndex, FX_WCHAR ch); + + int Compare(const FX_WCHAR* str) const; + + int Compare(const CFX_WideString& str) const; + + int CompareNoCase(const FX_WCHAR* str) const; + + bool Equal(const wchar_t* ptr) const; + bool Equal(const CFX_WideStringC& str) const; + bool Equal(const CFX_WideString& other) const; + + CFX_WideString Mid(FX_STRSIZE first) const; + + CFX_WideString Mid(FX_STRSIZE first, FX_STRSIZE count) const; + + CFX_WideString Left(FX_STRSIZE count) const; + + CFX_WideString Right(FX_STRSIZE count) const; + + FX_STRSIZE Insert(FX_STRSIZE index, FX_WCHAR ch); + + FX_STRSIZE Delete(FX_STRSIZE index, FX_STRSIZE count = 1); + + void Format(const FX_WCHAR* lpszFormat, ...); + + void FormatV(const FX_WCHAR* lpszFormat, va_list argList); + + void MakeLower(); + + void MakeUpper(); + + void TrimRight(); + + void TrimRight(FX_WCHAR chTarget); + + void TrimRight(const FX_WCHAR* lpszTargets); + + void TrimLeft(); + + void TrimLeft(FX_WCHAR chTarget); + + void TrimLeft(const FX_WCHAR* lpszTargets); + + void Reserve(FX_STRSIZE len); + + FX_WCHAR* GetBuffer(FX_STRSIZE len); + + void ReleaseBuffer(FX_STRSIZE len = -1); + + int GetInteger() const; + + FX_FLOAT GetFloat() const; + + FX_STRSIZE Find(const FX_WCHAR* lpszSub, FX_STRSIZE start = 0) const; + + FX_STRSIZE Find(FX_WCHAR ch, FX_STRSIZE start = 0) const; + + FX_STRSIZE Replace(const FX_WCHAR* lpszOld, const FX_WCHAR* lpszNew); + + FX_STRSIZE Remove(FX_WCHAR ch); + + CFX_ByteString UTF8Encode() const; + + CFX_ByteString UTF16LE_Encode() const; + + protected: + class StringData { + public: + static StringData* Create(int nLen); + void Retain() { ++m_nRefs; } + void Release() { + if (--m_nRefs <= 0) + FX_Free(this); + } + + intptr_t m_nRefs; // Would prefer ssize_t, but no windows support. + FX_STRSIZE m_nDataLength; + FX_STRSIZE m_nAllocLength; + FX_WCHAR m_String[1]; + + private: + StringData(FX_STRSIZE dataLen, FX_STRSIZE allocLen) + : m_nRefs(1), m_nDataLength(dataLen), m_nAllocLength(allocLen) { + FXSYS_assert(dataLen >= 0); + FXSYS_assert(allocLen >= 0); + FXSYS_assert(dataLen <= allocLen); + m_String[dataLen] = 0; + } + ~StringData() = delete; + }; + + void CopyBeforeWrite(); + void AllocBeforeWrite(FX_STRSIZE nLen); + void ConcatInPlace(FX_STRSIZE nSrcLen, const FX_WCHAR* lpszSrcData); + void ConcatCopy(FX_STRSIZE nSrc1Len, + const FX_WCHAR* lpszSrc1Data, + FX_STRSIZE nSrc2Len, + const FX_WCHAR* lpszSrc2Data); + void AssignCopy(FX_STRSIZE nSrcLen, const FX_WCHAR* lpszSrcData); + void AllocCopy(CFX_WideString& dest, + FX_STRSIZE nCopyLen, + FX_STRSIZE nCopyIndex) const; + + StringData* m_pData; + friend class fxcrt_WideStringConcatInPlace_Test; +}; +inline CFX_WideStringC::CFX_WideStringC(const CFX_WideString& src) { + m_Ptr = src.c_str(); + m_Length = src.GetLength(); +} +inline CFX_WideStringC& CFX_WideStringC::operator=(const CFX_WideString& src) { + m_Ptr = src.c_str(); + m_Length = src.GetLength(); + return *this; +} + +inline CFX_WideString operator+(const CFX_WideStringC& str1, + const CFX_WideStringC& str2) { + return CFX_WideString(str1, str2); +} +inline CFX_WideString operator+(const CFX_WideStringC& str1, + const FX_WCHAR* str2) { + return CFX_WideString(str1, str2); +} +inline CFX_WideString operator+(const FX_WCHAR* str1, + const CFX_WideStringC& str2) { + return CFX_WideString(str1, str2); +} +inline CFX_WideString operator+(const CFX_WideStringC& str1, FX_WCHAR ch) { + return CFX_WideString(str1, CFX_WideStringC(ch)); +} +inline CFX_WideString operator+(FX_WCHAR ch, const CFX_WideStringC& str2) { + return CFX_WideString(ch, str2); +} +inline CFX_WideString operator+(const CFX_WideString& str1, + const CFX_WideString& str2) { + return CFX_WideString(str1, str2); +} +inline CFX_WideString operator+(const CFX_WideString& str1, FX_WCHAR ch) { + return CFX_WideString(str1, CFX_WideStringC(ch)); +} +inline CFX_WideString operator+(FX_WCHAR ch, const CFX_WideString& str2) { + return CFX_WideString(ch, str2); +} +inline CFX_WideString operator+(const CFX_WideString& str1, + const FX_WCHAR* str2) { + return CFX_WideString(str1, str2); +} +inline CFX_WideString operator+(const FX_WCHAR* str1, + const CFX_WideString& str2) { + return CFX_WideString(str1, str2); +} +inline CFX_WideString operator+(const CFX_WideString& str1, + const CFX_WideStringC& str2) { + return CFX_WideString(str1, str2); +} +inline CFX_WideString operator+(const CFX_WideStringC& str1, + const CFX_WideString& str2) { + return CFX_WideString(str1, str2); +} +inline bool operator==(const wchar_t* lhs, const CFX_WideString& rhs) { + return rhs == lhs; +} +inline bool operator==(const CFX_WideStringC& lhs, const CFX_WideString& rhs) { + return rhs == lhs; +} +inline bool operator!=(const wchar_t* lhs, const CFX_WideString& rhs) { + return rhs != lhs; +} +inline bool operator!=(const CFX_WideStringC& lhs, const CFX_WideString& rhs) { + return rhs != lhs; +} + +CFX_ByteString FX_UTF8Encode(const FX_WCHAR* pwsStr, FX_STRSIZE len); +inline CFX_ByteString FX_UTF8Encode(const CFX_WideStringC& wsStr) { + return FX_UTF8Encode(wsStr.GetPtr(), wsStr.GetLength()); +} +inline CFX_ByteString FX_UTF8Encode(const CFX_WideString& wsStr) { + return FX_UTF8Encode(wsStr.c_str(), wsStr.GetLength()); +} + +FX_FLOAT FX_atof(const CFX_ByteStringC& str); +inline FX_FLOAT FX_atof(const CFX_WideStringC& wsStr) { + return FX_atof(FX_UTF8Encode(wsStr.GetPtr(), wsStr.GetLength())); +} +void FX_atonum(const CFX_ByteStringC& str, FX_BOOL& bInteger, void* pData); +FX_STRSIZE FX_ftoa(FX_FLOAT f, FX_CHAR* buf); + +#endif // CORE_FXCRT_INCLUDE_FX_STRING_H_ |