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Unified Diff: core/src/fxcrt/fx_basic_bstring.cpp

Issue 1142533002: Make CFX_StringData be scoped by CFX_Bytestring and add methods. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: indent Created 5 years, 7 months ago
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Index: core/src/fxcrt/fx_basic_bstring.cpp
diff --git a/core/src/fxcrt/fx_basic_bstring.cpp b/core/src/fxcrt/fx_basic_bstring.cpp
index 65f4b36b90227ba83a3e9649db44fef4d223b80b..87e50e76cc557c909e888edd0bae94f544bb9c78 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;
}
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