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authorTom Sepez <tsepez@chromium.org>2015-05-14 14:26:31 -0700
committerTom Sepez <tsepez@chromium.org>2015-05-14 14:26:31 -0700
commitf33cdd54d5d5340d8a662048d9cf4abe7d5f0488 (patch)
tree4d15a1cf6aa16865d054f4427bc7be5866c8e19f /core
parent8b2d91cc207102853fc138cb5d8b11675a26c1a5 (diff)
downloadpdfium-f33cdd54d5d5340d8a662048d9cf4abe7d5f0488.tar.xz
This is a precondition for someday combining Byte/Wide strings via templates. R=thestig@chromium.org Review URL: https://codereview.chromium.org/1142533002
Diffstat (limited to 'core')
-rw-r--r--core/include/fxcrt/fx_string.h88
-rw-r--r--core/src/fxcrt/fx_basic_bstring.cpp98
-rw-r--r--core/src/fxcrt/fx_basic_wstring.cpp96
3 files changed, 131 insertions, 151 deletions
diff --git a/core/include/fxcrt/fx_string.h b/core/include/fxcrt/fx_string.h
index 8bb29dabd6..a7b9a23e25 100644
--- a/core/include/fxcrt/fx_string.h
+++ b/core/include/fxcrt/fx_string.h
@@ -171,19 +171,6 @@ typedef const CFX_ByteStringC& FX_BSTR;
#define FX_BSTRC(str) CFX_ByteStringC(str, sizeof str-1)
#define FXBSTR_ID(c1, c2, c3, c4) ((c1 << 24) | (c2 << 16) | (c3 << 8) | (c4))
-// 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.
-struct CFX_StringData {
- 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];
-};
-
// 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
@@ -363,17 +350,45 @@ public:
#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;
+ };
- struct CFX_StringData* m_pData;
void AllocCopy(CFX_ByteString& dest, FX_STRSIZE nCopyLen, FX_STRSIZE nCopyIndex) const;
void AssignCopy(FX_STRSIZE nSrcLen, FX_LPCSTR lpszSrcData);
void ConcatCopy(FX_STRSIZE nSrc1Len, FX_LPCSTR lpszSrc1Data, FX_STRSIZE nSrc2Len, FX_LPCSTR lpszSrc2Data);
void ConcatInPlace(FX_STRSIZE nSrcLen, FX_LPCSTR lpszSrcData);
void CopyBeforeWrite();
void AllocBeforeWrite(FX_STRSIZE nLen);
+
+ StringData* m_pData;
};
inline CFX_ByteStringC::CFX_ByteStringC(const CFX_ByteString& src)
{
@@ -600,13 +615,6 @@ inline bool operator!= (const wchar_t* lhs, const CFX_WideStringC& rhs) {
typedef const CFX_WideStringC& FX_WSTR;
#define FX_WSTRC(wstr) CFX_WideStringC(wstr, FX_ArraySize(wstr) - 1)
-struct CFX_StringDataW {
- 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];
-};
-
// 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
@@ -777,14 +785,36 @@ public:
void ConvertFrom(const CFX_ByteString& str, CFX_CharMap* pCharMap = NULL);
protected:
- void CopyBeforeWrite();
- void AllocBeforeWrite(FX_STRSIZE nLen);
- void ConcatInPlace(FX_STRSIZE nSrcLen, FX_LPCWSTR lpszSrcData);
- void ConcatCopy(FX_STRSIZE nSrc1Len, FX_LPCWSTR lpszSrc1Data, FX_STRSIZE nSrc2Len, FX_LPCWSTR lpszSrc2Data);
- void AssignCopy(FX_STRSIZE nSrcLen, FX_LPCWSTR lpszSrcData);
- void AllocCopy(CFX_WideString& dest, FX_STRSIZE nCopyLen, FX_STRSIZE nCopyIndex) const;
+ 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, FX_LPCWSTR lpszSrcData);
+ void ConcatCopy(FX_STRSIZE nSrc1Len, FX_LPCWSTR lpszSrc1Data, FX_STRSIZE nSrc2Len, FX_LPCWSTR lpszSrc2Data);
+ void AssignCopy(FX_STRSIZE nSrcLen, FX_LPCWSTR lpszSrcData);
+ void AllocCopy(CFX_WideString& dest, FX_STRSIZE nCopyLen, FX_STRSIZE nCopyIndex) const;
- CFX_StringDataW* m_pData;
+ StringData* m_pData;
};
inline CFX_WideStringC::CFX_WideStringC(const CFX_WideString& src)
{
diff --git a/core/src/fxcrt/fx_basic_bstring.cpp b/core/src/fxcrt/fx_basic_bstring.cpp
index 65f4b36b90..87e50e76cc 100644
--- a/core/src/fxcrt/fx_basic_bstring.cpp
+++ b/core/src/fxcrt/fx_basic_bstring.cpp
@@ -47,7 +47,9 @@ CFX_ByteString CFX_ByteString::FormatInteger(int i, FX_DWORD flags)
char buf[32];
return CFX_ByteStringC(buf, _Buffer_itoa(buf, i, flags));
}
-static CFX_StringData* FX_AllocString(int nLen)
+
+// static
+CFX_ByteString::StringData* CFX_ByteString::StringData::Create(int nLen)
{
// |nLen| is currently declared as in |int|. TODO(palmer): It should be
// a |size_t|, or at least unsigned.
@@ -57,7 +59,7 @@ static CFX_StringData* FX_AllocString(int nLen)
// Fixed portion of header plus a NUL char not included in m_nAllocLength.
// sizeof(FX_CHAR) is always 1, used for consistency with CFX_Widestring.
- int overhead = offsetof(CFX_StringData, m_String) + sizeof(FX_CHAR);
+ int overhead = offsetof(StringData, m_String) + sizeof(FX_CHAR);
pdfium::base::CheckedNumeric<int> nSize = nLen;
nSize += overhead;
@@ -70,34 +72,16 @@ static CFX_StringData* FX_AllocString(int nLen)
int usableSize = totalSize - overhead;
FXSYS_assert(usableSize >= nLen);
- CFX_StringData* pData = (CFX_StringData*)FX_Alloc(FX_BYTE, totalSize);
+ void* pData = FX_Alloc(FX_BYTE, totalSize);
if (!pData) {
return NULL;
}
- pData->m_nAllocLength = usableSize;
- pData->m_nDataLength = nLen;
- pData->m_nRefs = 1;
- pData->m_String[nLen] = 0;
- return pData;
-}
-static void FX_ReleaseString(CFX_StringData* pData)
-{
- if (pData == NULL) {
- return;
- }
- pData->m_nRefs --;
- if (pData->m_nRefs <= 0) {
- FX_Free(pData);
- }
+ return new (pData) StringData(nLen, usableSize);
}
CFX_ByteString::~CFX_ByteString()
{
- if (m_pData == NULL) {
- return;
- }
- m_pData->m_nRefs --;
- if (m_pData->m_nRefs < 1) {
- FX_Free(m_pData);
+ if (m_pData) {
+ m_pData->Release();
}
}
CFX_ByteString::CFX_ByteString(FX_LPCSTR lpsz, FX_STRSIZE nLen)
@@ -106,7 +90,7 @@ CFX_ByteString::CFX_ByteString(FX_LPCSTR lpsz, FX_STRSIZE nLen)
nLen = lpsz ? FXSYS_strlen(lpsz) : 0;
}
if (nLen) {
- m_pData = FX_AllocString(nLen);
+ m_pData = StringData::Create(nLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, lpsz, nLen);
}
@@ -117,7 +101,7 @@ CFX_ByteString::CFX_ByteString(FX_LPCSTR lpsz, FX_STRSIZE nLen)
CFX_ByteString::CFX_ByteString(FX_LPCBYTE lpsz, FX_STRSIZE nLen)
{
if (nLen > 0) {
- m_pData = FX_AllocString(nLen);
+ m_pData = StringData::Create(nLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, lpsz, nLen);
}
@@ -127,7 +111,7 @@ CFX_ByteString::CFX_ByteString(FX_LPCBYTE lpsz, FX_STRSIZE nLen)
}
CFX_ByteString::CFX_ByteString(char ch)
{
- m_pData = FX_AllocString(1);
+ m_pData = StringData::Create(1);
if (m_pData) {
m_pData->m_String[0] = ch;
}
@@ -140,7 +124,7 @@ CFX_ByteString::CFX_ByteString(const CFX_ByteString& stringSrc)
}
if (stringSrc.m_pData->m_nRefs >= 0) {
m_pData = stringSrc.m_pData;
- m_pData->m_nRefs ++;
+ m_pData->Retain();
} else {
m_pData = NULL;
*this = stringSrc;
@@ -163,7 +147,7 @@ CFX_ByteString::CFX_ByteString(FX_BSTR str1, FX_BSTR str2)
if (nNewLen == 0) {
return;
}
- m_pData = FX_AllocString(nNewLen);
+ m_pData = StringData::Create(nNewLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, str1.GetCStr(), str1.GetLength());
FXSYS_memcpy32(m_pData->m_String + str1.GetLength(), str2.GetCStr(), str2.GetLength());
@@ -201,7 +185,7 @@ const CFX_ByteString& CFX_ByteString::operator=(const CFX_ByteString& stringSrc)
Empty();
m_pData = stringSrc.m_pData;
if (m_pData) {
- m_pData->m_nRefs ++;
+ m_pData->Retain();
}
}
return *this;
@@ -215,7 +199,7 @@ void CFX_ByteString::Load(FX_LPCBYTE buf, FX_STRSIZE len)
{
Empty();
if (len) {
- m_pData = FX_AllocString(len);
+ m_pData = StringData::Create(len);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, buf, len);
}
@@ -259,7 +243,7 @@ bool CFX_ByteString::Equal(const char* ptr) const
if (!ptr) {
return m_pData->m_nDataLength == 0;
}
- return strlen(ptr) == m_pData->m_nDataLength &&
+ return FXSYS_strlen(ptr) == m_pData->m_nDataLength &&
FXSYS_memcmp32(ptr, m_pData->m_String, m_pData->m_nDataLength) == 0;
}
bool CFX_ByteString::Equal(const CFX_ByteStringC& str) const
@@ -285,15 +269,10 @@ bool CFX_ByteString::Equal(const CFX_ByteString& other) const
}
void CFX_ByteString::Empty()
{
- if (m_pData == NULL) {
- return;
- }
- if (m_pData->m_nRefs > 1) {
- m_pData->m_nRefs --;
- } else {
- FX_Free(m_pData);
+ if (m_pData) {
+ m_pData->Release();
+ m_pData = NULL;
}
- m_pData = NULL;
}
bool CFX_ByteString::EqualNoCase(FX_BSTR str) const
{
@@ -337,10 +316,10 @@ void CFX_ByteString::CopyBeforeWrite()
if (m_pData == NULL || m_pData->m_nRefs <= 1) {
return;
}
- CFX_StringData* pData = m_pData;
- m_pData->m_nRefs --;
+ StringData* pData = m_pData;
+ m_pData->Release();
FX_STRSIZE nDataLength = pData->m_nDataLength;
- m_pData = FX_AllocString(nDataLength);
+ m_pData = StringData::Create(nDataLength);
if (m_pData != NULL) {
FXSYS_memcpy32(m_pData->m_String, pData->m_String, nDataLength + 1);
}
@@ -351,7 +330,7 @@ void CFX_ByteString::AllocBeforeWrite(FX_STRSIZE nLen)
return;
}
Empty();
- m_pData = FX_AllocString(nLen);
+ m_pData = StringData::Create(nLen);
}
void CFX_ByteString::ReleaseBuffer(FX_STRSIZE nNewLength)
{
@@ -384,7 +363,7 @@ FX_LPSTR CFX_ByteString::GetBuffer(FX_STRSIZE nMinBufLength)
return m_pData->m_String;
}
if (m_pData == NULL) {
- m_pData = FX_AllocString(nMinBufLength);
+ m_pData = StringData::Create(nMinBufLength);
if (!m_pData) {
return NULL;
}
@@ -392,21 +371,18 @@ FX_LPSTR CFX_ByteString::GetBuffer(FX_STRSIZE nMinBufLength)
m_pData->m_String[0] = 0;
return m_pData->m_String;
}
- CFX_StringData* pOldData = m_pData;
+ StringData* pOldData = m_pData;
FX_STRSIZE nOldLen = pOldData->m_nDataLength;
if (nMinBufLength < nOldLen) {
nMinBufLength = nOldLen;
}
- m_pData = FX_AllocString(nMinBufLength);
+ m_pData = StringData::Create(nMinBufLength);
if (!m_pData) {
return NULL;
}
FXSYS_memcpy32(m_pData->m_String, pOldData->m_String, (nOldLen + 1));
m_pData->m_nDataLength = nOldLen;
- pOldData->m_nRefs --;
- if (pOldData->m_nRefs <= 0) {
- FX_Free(pOldData);
- }
+ pOldData->Release();
return m_pData->m_String;
}
FX_STRSIZE CFX_ByteString::Delete(FX_STRSIZE nIndex, FX_STRSIZE nCount)
@@ -438,7 +414,7 @@ void CFX_ByteString::ConcatInPlace(FX_STRSIZE nSrcLen, FX_LPCSTR lpszSrcData)
return;
}
if (m_pData == NULL) {
- m_pData = FX_AllocString(nSrcLen);
+ m_pData = StringData::Create(nSrcLen);
if (!m_pData) {
return;
}
@@ -446,9 +422,9 @@ void CFX_ByteString::ConcatInPlace(FX_STRSIZE nSrcLen, FX_LPCSTR lpszSrcData)
return;
}
if (m_pData->m_nRefs > 1 || m_pData->m_nDataLength + nSrcLen > m_pData->m_nAllocLength) {
- CFX_StringData* pOldData = m_pData;
+ StringData* pOldData = m_pData;
ConcatCopy(m_pData->m_nDataLength, m_pData->m_String, nSrcLen, lpszSrcData);
- FX_ReleaseString(pOldData);
+ pOldData->Release();
} else {
FXSYS_memcpy32(m_pData->m_String + m_pData->m_nDataLength, lpszSrcData, nSrcLen);
m_pData->m_nDataLength += nSrcLen;
@@ -462,7 +438,7 @@ void CFX_ByteString::ConcatCopy(FX_STRSIZE nSrc1Len, FX_LPCSTR lpszSrc1Data,
if (nNewLen == 0) {
return;
}
- m_pData = FX_AllocString(nNewLen);
+ m_pData = StringData::Create(nNewLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, lpszSrc1Data, nSrc1Len);
FXSYS_memcpy32(m_pData->m_String + nSrc1Len, lpszSrc2Data, nSrc2Len);
@@ -504,7 +480,7 @@ void CFX_ByteString::AllocCopy(CFX_ByteString& dest, FX_STRSIZE nCopyLen, FX_STR
return;
}
ASSERT(dest.m_pData == NULL);
- dest.m_pData = FX_AllocString(nCopyLen);
+ dest.m_pData = StringData::Create(nCopyLen);
if (dest.m_pData) {
FXSYS_memcpy32(dest.m_pData->m_String, m_pData->m_String + nCopyIndex, nCopyLen);
}
@@ -745,15 +721,15 @@ FX_STRSIZE CFX_ByteString::Insert(FX_STRSIZE nIndex, FX_CHAR ch)
}
nNewLength++;
if (m_pData == NULL || m_pData->m_nAllocLength < nNewLength) {
- CFX_StringData* pOldData = m_pData;
+ StringData* pOldData = m_pData;
FX_LPCSTR pstr = m_pData->m_String;
- m_pData = FX_AllocString(nNewLength);
+ m_pData = StringData::Create(nNewLength);
if (!m_pData) {
return 0;
}
if(pOldData != NULL) {
FXSYS_memmove32(m_pData->m_String, pstr, (pOldData->m_nDataLength + 1));
- FX_ReleaseString(pOldData);
+ pOldData->Release();
} else {
m_pData->m_String[0] = 0;
}
@@ -929,7 +905,7 @@ FX_STRSIZE CFX_ByteString::Replace(FX_BSTR lpszOld, FX_BSTR lpszNew)
Empty();
return nCount;
}
- CFX_StringData* pNewData = FX_AllocString(nNewLength);
+ StringData* pNewData = StringData::Create(nNewLength);
if (!pNewData) {
return 0;
}
@@ -944,7 +920,7 @@ FX_STRSIZE CFX_ByteString::Replace(FX_BSTR lpszOld, FX_BSTR lpszNew)
pStart = pTarget + nSourceLen;
}
FXSYS_memcpy32(pDest, pStart, pEnd - pStart);
- FX_ReleaseString(m_pData);
+ m_pData->Release();
m_pData = pNewData;
return nCount;
}
diff --git a/core/src/fxcrt/fx_basic_wstring.cpp b/core/src/fxcrt/fx_basic_wstring.cpp
index 0511b847e3..da022053b8 100644
--- a/core/src/fxcrt/fx_basic_wstring.cpp
+++ b/core/src/fxcrt/fx_basic_wstring.cpp
@@ -9,7 +9,8 @@
#include "../../include/fxcrt/fx_basic.h"
#include "../../../third_party/base/numerics/safe_math.h"
-static CFX_StringDataW* FX_AllocStringW(int nLen)
+// static
+CFX_WideString::StringData* CFX_WideString::StringData::Create(int nLen)
{
// TODO(palmer): |nLen| should really be declared as |size_t|, or
// at least unsigned.
@@ -18,7 +19,7 @@ static CFX_StringDataW* FX_AllocStringW(int nLen)
}
// Fixed portion of header plus a NUL wide char not in m_nAllocLength.
- int overhead = offsetof(CFX_StringDataW, m_String) + sizeof(FX_WCHAR);
+ int overhead = offsetof(StringData, m_String) + sizeof(FX_WCHAR);
pdfium::base::CheckedNumeric<int> iSize = nLen;
iSize *= sizeof(FX_WCHAR);
iSize += overhead;
@@ -32,35 +33,16 @@ static CFX_StringDataW* FX_AllocStringW(int nLen)
int usableLen = (totalSize - overhead) / sizeof(FX_WCHAR);
FXSYS_assert(usableLen >= nLen);
- CFX_StringDataW* pData = (CFX_StringDataW*)FX_Alloc(FX_BYTE, iSize.ValueOrDie());
+ void* pData = FX_Alloc(FX_BYTE, iSize.ValueOrDie());
if (!pData) {
return NULL;
}
-
- pData->m_nAllocLength = usableLen;
- pData->m_nDataLength = nLen;
- pData->m_nRefs = 1;
- pData->m_String[nLen] = 0;
- return pData;
-}
-static void FX_ReleaseStringW(CFX_StringDataW* pData)
-{
- if (pData == NULL) {
- return;
- }
- pData->m_nRefs --;
- if (pData->m_nRefs <= 0) {
- FX_Free(pData);
- }
+ return new (pData) StringData(nLen, usableLen);
}
CFX_WideString::~CFX_WideString()
{
- if (m_pData == NULL) {
- return;
- }
- m_pData->m_nRefs --;
- if (m_pData->m_nRefs < 1) {
- FX_Free(m_pData);
+ if (m_pData) {
+ m_pData->Release();
}
}
CFX_WideString::CFX_WideString(const CFX_WideString& stringSrc)
@@ -71,7 +53,7 @@ CFX_WideString::CFX_WideString(const CFX_WideString& stringSrc)
}
if (stringSrc.m_pData->m_nRefs >= 0) {
m_pData = stringSrc.m_pData;
- m_pData->m_nRefs ++;
+ m_pData->Retain();
} else {
m_pData = NULL;
*this = stringSrc;
@@ -82,7 +64,7 @@ CFX_WideString::CFX_WideString(FX_LPCWSTR lpsz, FX_STRSIZE nLen) {
nLen = lpsz ? FXSYS_wcslen(lpsz) : 0;
}
if (nLen) {
- m_pData = FX_AllocStringW(nLen);
+ m_pData = StringData::Create(nLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, lpsz, nLen * sizeof(FX_WCHAR));
}
@@ -92,7 +74,7 @@ CFX_WideString::CFX_WideString(FX_LPCWSTR lpsz, FX_STRSIZE nLen) {
}
CFX_WideString::CFX_WideString(FX_WCHAR ch)
{
- m_pData = FX_AllocStringW(1);
+ m_pData = StringData::Create(1);
if (m_pData) {
m_pData->m_String[0] = ch;
}
@@ -103,7 +85,7 @@ CFX_WideString::CFX_WideString(const CFX_WideStringC& str)
m_pData = NULL;
return;
}
- m_pData = FX_AllocStringW(str.GetLength());
+ m_pData = StringData::Create(str.GetLength());
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, str.GetPtr(), str.GetLength()*sizeof(FX_WCHAR));
}
@@ -115,7 +97,7 @@ CFX_WideString::CFX_WideString(const CFX_WideStringC& str1, const CFX_WideString
if (nNewLen == 0) {
return;
}
- m_pData = FX_AllocStringW(nNewLen);
+ m_pData = StringData::Create(nNewLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, str1.GetPtr(), str1.GetLength()*sizeof(FX_WCHAR));
FXSYS_memcpy32(m_pData->m_String + str1.GetLength(), str2.GetPtr(), str2.GetLength()*sizeof(FX_WCHAR));
@@ -170,7 +152,7 @@ const CFX_WideString& CFX_WideString::operator=(const CFX_WideString& stringSrc)
Empty();
m_pData = stringSrc.m_pData;
if (m_pData) {
- m_pData->m_nRefs ++;
+ m_pData->Retain();
}
}
return *this;
@@ -237,15 +219,10 @@ bool CFX_WideString::Equal(const CFX_WideString& other) const
}
void CFX_WideString::Empty()
{
- if (m_pData == NULL) {
- return;
- }
- if (m_pData->m_nRefs > 1) {
- m_pData->m_nRefs --;
- } else {
- FX_Free(m_pData);
+ if (m_pData) {
+ m_pData->Release();
+ m_pData = NULL;
}
- m_pData = NULL;
}
void CFX_WideString::ConcatInPlace(FX_STRSIZE nSrcLen, FX_LPCWSTR lpszSrcData)
{
@@ -253,16 +230,16 @@ void CFX_WideString::ConcatInPlace(FX_STRSIZE nSrcLen, FX_LPCWSTR lpszSrcData)
return;
}
if (m_pData == NULL) {
- m_pData = FX_AllocStringW(nSrcLen);
+ m_pData = StringData::Create(nSrcLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, lpszSrcData, nSrcLen * sizeof(FX_WCHAR));
}
return;
}
if (m_pData->m_nRefs > 1 || m_pData->m_nDataLength + nSrcLen > m_pData->m_nAllocLength) {
- CFX_StringDataW* pOldData = m_pData;
+ StringData* pOldData = m_pData;
ConcatCopy(m_pData->m_nDataLength, m_pData->m_String, nSrcLen, lpszSrcData);
- FX_ReleaseStringW(pOldData);
+ pOldData->Release();
} else {
FXSYS_memcpy32(m_pData->m_String + m_pData->m_nDataLength, lpszSrcData, nSrcLen * sizeof(FX_WCHAR));
m_pData->m_nDataLength += nSrcLen;
@@ -276,7 +253,7 @@ void CFX_WideString::ConcatCopy(FX_STRSIZE nSrc1Len, FX_LPCWSTR lpszSrc1Data,
if (nNewLen == 0) {
return;
}
- m_pData = FX_AllocStringW(nNewLen);
+ m_pData = StringData::Create(nNewLen);
if (m_pData) {
FXSYS_memcpy32(m_pData->m_String, lpszSrc1Data, nSrc1Len * sizeof(FX_WCHAR));
FXSYS_memcpy32(m_pData->m_String + nSrc1Len, lpszSrc2Data, nSrc2Len * sizeof(FX_WCHAR));
@@ -287,10 +264,10 @@ void CFX_WideString::CopyBeforeWrite()
if (m_pData == NULL || m_pData->m_nRefs <= 1) {
return;
}
- CFX_StringDataW* pData = m_pData;
- m_pData->m_nRefs --;
+ StringData* pData = m_pData;
+ m_pData->Release();
FX_STRSIZE nDataLength = pData->m_nDataLength;
- m_pData = FX_AllocStringW(nDataLength);
+ m_pData = StringData::Create(nDataLength);
if (m_pData != NULL) {
FXSYS_memcpy32(m_pData->m_String, pData->m_String, (nDataLength + 1) * sizeof(FX_WCHAR));
}
@@ -301,7 +278,7 @@ void CFX_WideString::AllocBeforeWrite(FX_STRSIZE nLen)
return;
}
Empty();
- m_pData = FX_AllocStringW(nLen);
+ m_pData = StringData::Create(nLen);
}
void CFX_WideString::AssignCopy(FX_STRSIZE nSrcLen, FX_LPCWSTR lpszSrcData)
{
@@ -359,7 +336,7 @@ FX_LPWSTR CFX_WideString::GetBuffer(FX_STRSIZE nMinBufLength)
return m_pData->m_String;
}
if (m_pData == NULL) {
- m_pData = FX_AllocStringW(nMinBufLength);
+ m_pData = StringData::Create(nMinBufLength);
if (!m_pData) {
return NULL;
}
@@ -367,21 +344,18 @@ FX_LPWSTR CFX_WideString::GetBuffer(FX_STRSIZE nMinBufLength)
m_pData->m_String[0] = 0;
return m_pData->m_String;
}
- CFX_StringDataW* pOldData = m_pData;
+ StringData* pOldData = m_pData;
FX_STRSIZE nOldLen = pOldData->m_nDataLength;
if (nMinBufLength < nOldLen) {
nMinBufLength = nOldLen;
}
- m_pData = FX_AllocStringW(nMinBufLength);
+ m_pData = StringData::Create(nMinBufLength);
if (!m_pData) {
return NULL;
}
FXSYS_memcpy32(m_pData->m_String, pOldData->m_String, (nOldLen + 1)*sizeof(FX_WCHAR));
m_pData->m_nDataLength = nOldLen;
- pOldData->m_nRefs --;
- if (pOldData->m_nRefs <= 0) {
- FX_Free(pOldData);
- }
+ pOldData->Release();
return m_pData->m_String;
}
CFX_WideString CFX_WideString::FromLocal(const char* str, FX_STRSIZE len)
@@ -436,7 +410,7 @@ void CFX_WideString::AllocCopy(CFX_WideString& dest, FX_STRSIZE nCopyLen, FX_STR
pdfium::base::CheckedNumeric<FX_STRSIZE> iSize = static_cast<FX_STRSIZE>(sizeof(FX_WCHAR));
iSize *= nCopyLen;
ASSERT(dest.m_pData == NULL);
- dest.m_pData = FX_AllocStringW(nCopyLen);
+ dest.m_pData = StringData::Create(nCopyLen);
if (dest.m_pData) {
FXSYS_memcpy32(dest.m_pData->m_String, m_pData->m_String + nCopyIndex, iSize.ValueOrDie());
}
@@ -678,14 +652,14 @@ FX_STRSIZE CFX_WideString::Replace(FX_LPCWSTR lpszOld, FX_LPCWSTR lpszNew)
FX_STRSIZE nOldLength = m_pData->m_nDataLength;
FX_STRSIZE nNewLength = nOldLength + (nReplacementLen - nSourceLen) * nCount;
if (m_pData->m_nAllocLength < nNewLength || m_pData->m_nRefs > 1) {
- CFX_StringDataW* pOldData = m_pData;
+ StringData* pOldData = m_pData;
FX_LPCWSTR pstr = m_pData->m_String;
- m_pData = FX_AllocStringW(nNewLength);
+ m_pData = StringData::Create(nNewLength);
if (!m_pData) {
return 0;
}
FXSYS_memcpy32(m_pData->m_String, pstr, pOldData->m_nDataLength * sizeof(FX_WCHAR));
- FX_ReleaseStringW(pOldData);
+ pOldData->Release();
}
lpszStart = m_pData->m_String;
lpszEnd = m_pData->m_String + FX_MAX(m_pData->m_nDataLength, nNewLength);
@@ -716,15 +690,15 @@ FX_STRSIZE CFX_WideString::Insert(FX_STRSIZE nIndex, FX_WCHAR ch)
}
nNewLength++;
if (m_pData == NULL || m_pData->m_nAllocLength < nNewLength) {
- CFX_StringDataW* pOldData = m_pData;
+ StringData* pOldData = m_pData;
FX_LPCWSTR pstr = m_pData->m_String;
- m_pData = FX_AllocStringW(nNewLength);
+ m_pData = StringData::Create(nNewLength);
if (!m_pData) {
return 0;
}
if(pOldData != NULL) {
FXSYS_memmove32(m_pData->m_String, pstr, (pOldData->m_nDataLength + 1)*sizeof(FX_WCHAR));
- FX_ReleaseStringW(pOldData);
+ pOldData->Release();
} else {
m_pData->m_String[0] = 0;
}