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-rw-r--r--core/fxcrt/include/fx_string.h117
1 files changed, 45 insertions, 72 deletions
diff --git a/core/fxcrt/include/fx_string.h b/core/fxcrt/include/fx_string.h
index 26000dd6c1..9aa67845f8 100644
--- a/core/fxcrt/include/fx_string.h
+++ b/core/fxcrt/include/fx_string.h
@@ -10,6 +10,7 @@
#include <stdint.h> // For intptr_t.
#include <algorithm>
+#include "core/fxcrt/include/cfx_retain_ptr.h"
#include "core/fxcrt/include/fx_memory.h"
#include "core/fxcrt/include/fx_system.h"
@@ -92,11 +93,9 @@ class CFX_ByteStringC {
uint32_t 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]; }
@@ -144,16 +143,9 @@ 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() {}
+ CFX_ByteString(const CFX_ByteString& other) : m_pData(other.m_pData) {}
+ CFX_ByteString(CFX_ByteString&& other) { m_pData.Swap(other.m_pData); }
CFX_ByteString(char ch);
CFX_ByteString(const FX_CHAR* ptr)
@@ -167,8 +159,11 @@ class CFX_ByteString {
~CFX_ByteString();
- static CFX_ByteString FromUnicode(const FX_WCHAR* ptr, FX_STRSIZE len = -1);
+ // Deprecated -- use clear().
+ void Empty() { m_pData.Reset(); }
+ void clear() { m_pData.Reset(); }
+ 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.
@@ -190,7 +185,6 @@ class CFX_ByteString {
}
FX_STRSIZE GetLength() const { return m_pData ? m_pData->m_nDataLength : 0; }
-
bool IsEmpty() const { return !GetLength(); }
int Compare(const CFX_ByteStringC& str) const;
@@ -212,24 +206,16 @@ class CFX_ByteString {
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 {
@@ -241,49 +227,34 @@ class CFX_ByteString {
}
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,
@@ -303,52 +274,62 @@ class CFX_ByteString {
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);
+ static StringData* Create(FX_STRSIZE nLen);
+ static StringData* Create(const StringData& other);
+ static StringData* Create(const FX_CHAR* pStr, FX_STRSIZE nLen);
+
void Retain() { ++m_nRefs; }
void Release() {
if (--m_nRefs <= 0)
FX_Free(this);
}
+ bool CanOperateInPlace(FX_STRSIZE nTotalLen) const {
+ return m_nRefs <= 1 && nTotalLen <= m_nAllocLength;
+ }
+
+ void CopyContents(const StringData& other);
+ void CopyContents(const FX_CHAR* pStr, FX_STRSIZE nLen);
+ void CopyContentsAt(FX_STRSIZE offset,
+ const FX_CHAR* pStr,
+ FX_STRSIZE nLen);
+
+ // 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.
intptr_t m_nRefs; // Would prefer ssize_t, but no windows support.
+
+ // |FX_STRSIZE| is currently typedef'd as |int|.
+ // TODO(palmer): It should be a |size_t|, or at least unsigned.
+ // These lengths do not include the terminating NUL, but the underlying
+ // buffer is sized to be capable of holding it.
FX_STRSIZE m_nDataLength;
FX_STRSIZE m_nAllocLength;
+
+ // Not really 1, variable size.
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(FX_STRSIZE dataLen, FX_STRSIZE allocLen);
~StringData() = delete;
};
+ void ReallocBeforeWrite(FX_STRSIZE nNewLen);
+ void AllocBeforeWrite(FX_STRSIZE nNewLen);
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);
+ void AssignCopy(const FX_CHAR* pSrcData, FX_STRSIZE nSrcLen);
+ void Concat(const FX_CHAR* lpszSrcData, FX_STRSIZE nSrcLen);
- StringData* m_pData;
- friend class fxcrt_ByteStringConcatInPlace_Test;
+ CFX_RetainPtr<StringData> m_pData;
+ friend class fxcrt_ByteStringConcat_Test;
};
+
inline CFX_ByteStringC::CFX_ByteStringC(const CFX_ByteString& src) {
m_Ptr = (const uint8_t*)src;
m_Length = src.GetLength();
@@ -416,6 +397,7 @@ 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;
@@ -473,7 +455,6 @@ class CFX_WideStringC {
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]; }
@@ -525,6 +506,7 @@ class CFX_WideStringC {
private:
void* operator new(size_t) throw() { return NULL; }
};
+
inline bool operator==(const wchar_t* lhs, const CFX_WideStringC& rhs) {
return rhs == lhs;
}
@@ -545,7 +527,7 @@ class CFX_WideString {
CFX_WideString(const CFX_WideString& str);
// Move constructor.
- inline CFX_WideString(CFX_WideString&& other) {
+ CFX_WideString(CFX_WideString&& other) {
m_pData = other.m_pData;
other.m_pData = nullptr;
}
@@ -554,22 +536,18 @@ class CFX_WideString {
: 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);
@@ -652,19 +630,14 @@ class CFX_WideString {
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:
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 04:57:00 +0000