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-rw-r--r--xfa/fgas/crt/ifgas_stream.cpp152
1 files changed, 60 insertions, 92 deletions
diff --git a/xfa/fgas/crt/ifgas_stream.cpp b/xfa/fgas/crt/ifgas_stream.cpp
index 3f5069e4bb..06ab46551d 100644
--- a/xfa/fgas/crt/ifgas_stream.cpp
+++ b/xfa/fgas/crt/ifgas_stream.cpp
@@ -25,6 +25,9 @@ namespace {
class CFGAS_Stream : public IFGAS_Stream {
public:
+ template <typename T, typename... Args>
+ friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
+
// IFGAS_Stream
FX_FILESIZE GetLength() const override { return m_pStream->GetSize(); }
FX_FILESIZE GetPosition() override { return m_iPosition; }
@@ -38,15 +41,13 @@ class CFGAS_Stream : public IFGAS_Stream {
uint16_t GetCodePage() const override { return m_wCodePage; }
void SetCodePage(uint16_t wCodePage) override;
- protected:
+ private:
CFGAS_Stream(const CFX_RetainPtr<IFX_SeekableStream>& stream,
bool isWriteSteam);
~CFGAS_Stream() override;
- virtual FX_STRSIZE ReadData(uint8_t* pBuffer, FX_STRSIZE iBufferSize) {
- return 0;
- }
- virtual void WriteData(const CFX_WideStringC& str) {}
+ FX_STRSIZE ReadData(uint8_t* pBuffer, FX_STRSIZE iBufferSize);
+ void WriteData(const CFX_WideStringC& str);
uint16_t m_wCodePage;
FX_STRSIZE m_wBOMLength;
@@ -55,34 +56,6 @@ class CFGAS_Stream : public IFGAS_Stream {
CFX_RetainPtr<IFX_SeekableStream> m_pStream;
};
-class CFGAS_FileReadStreamImp : public CFGAS_Stream {
- public:
- template <typename T, typename... Args>
- friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
-
- // CFGAS_Stream:
- FX_STRSIZE ReadData(uint8_t* pBuffer, FX_STRSIZE iBufferSize) override;
-
- private:
- explicit CFGAS_FileReadStreamImp(
- const CFX_RetainPtr<IFX_SeekableStream>& pFileRead);
- ~CFGAS_FileReadStreamImp() override {}
-};
-
-class CFGAS_FileWriteStreamImp : public CFGAS_Stream {
- public:
- template <typename T, typename... Args>
- friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
-
- // CFGAS_Stream:
- void WriteData(const CFX_WideStringC& str) override;
-
- private:
- explicit CFGAS_FileWriteStreamImp(
- const CFX_RetainPtr<IFX_SeekableStream>& pFileWrite);
- ~CFGAS_FileWriteStreamImp() override {}
-};
-
class CFGAS_WideStringReadStream : public IFGAS_Stream {
public:
template <typename T, typename... Args>
@@ -232,9 +205,20 @@ void SwapByteOrder(wchar_t* pStr, FX_STRSIZE iLength) {
#define BOM_UTF16_LE 0xFFFE0000
#endif // _FX_ENDIAN_ == _FX_LITTLE_ENDIAN_
-CFGAS_FileReadStreamImp::CFGAS_FileReadStreamImp(
- const CFX_RetainPtr<IFX_SeekableStream>& pFileRead)
- : CFGAS_Stream(pFileRead, false) {
+CFGAS_Stream::CFGAS_Stream(const CFX_RetainPtr<IFX_SeekableStream>& stream,
+ bool isWriteStream)
+ : m_wCodePage(FX_CODEPAGE_DefANSI),
+ m_wBOMLength(0),
+ m_IsWriteStream(isWriteStream),
+ m_iPosition(0),
+ m_pStream(stream) {
+ ASSERT(m_pStream);
+
+ if (isWriteStream) {
+ m_iPosition = m_pStream->GetSize();
+ return;
+ }
+
FX_FILESIZE iPosition = GetPosition();
Seek(FX_STREAMSEEK_Begin, 0);
@@ -263,60 +247,6 @@ CFGAS_FileReadStreamImp::CFGAS_FileReadStreamImp(
std::max(static_cast<FX_FILESIZE>(m_wBOMLength), iPosition));
}
-FX_STRSIZE CFGAS_FileReadStreamImp::ReadData(uint8_t* pBuffer,
- FX_STRSIZE iBufferSize) {
- ASSERT(pBuffer && iBufferSize > 0);
-
- iBufferSize = std::min(
- iBufferSize, static_cast<FX_STRSIZE>(m_pStream->GetSize() - m_iPosition));
- if (iBufferSize <= 0)
- return 0;
-
- if (m_pStream->ReadBlock(pBuffer, m_iPosition, iBufferSize)) {
- pdfium::base::CheckedNumeric<FX_FILESIZE> new_pos = m_iPosition;
- new_pos += iBufferSize;
- if (!new_pos.IsValid())
- return 0;
-
- m_iPosition = new_pos.ValueOrDie();
- return iBufferSize;
- }
- return 0;
-}
-
-CFGAS_FileWriteStreamImp::CFGAS_FileWriteStreamImp(
- const CFX_RetainPtr<IFX_SeekableStream>& pFileWrite)
- : CFGAS_Stream(pFileWrite, true) {
- m_iPosition = m_pStream->GetSize();
-}
-
-void CFGAS_FileWriteStreamImp::WriteData(const CFX_WideStringC& str) {
- if (str.GetLength() == 0)
- return;
-
- if (!m_pStream->WriteBlock(str.c_str(), m_iPosition,
- str.GetLength() * sizeof(wchar_t)))
- return;
-
- pdfium::base::CheckedNumeric<FX_STRSIZE> new_pos = m_iPosition;
- new_pos += str.GetLength() * sizeof(wchar_t);
- // TODO(dsinclair): Not sure what to do if we over flow ....
- if (!new_pos.IsValid())
- return;
-
- m_iPosition = new_pos.ValueOrDie();
-}
-
-CFGAS_Stream::CFGAS_Stream(const CFX_RetainPtr<IFX_SeekableStream>& stream,
- bool isWriteStream)
- : m_wCodePage(FX_CODEPAGE_DefANSI),
- m_wBOMLength(0),
- m_IsWriteStream(isWriteStream),
- m_iPosition(0),
- m_pStream(stream) {
- ASSERT(m_pStream);
-}
-
CFGAS_Stream::~CFGAS_Stream() {}
void CFGAS_Stream::Seek(FX_STREAMSEEK eSeek, FX_FILESIZE iOffset) {
@@ -338,6 +268,29 @@ void CFGAS_Stream::SetCodePage(uint16_t wCodePage) {
m_wCodePage = wCodePage;
}
+FX_STRSIZE CFGAS_Stream::ReadData(uint8_t* pBuffer, FX_STRSIZE iBufferSize) {
+ ASSERT(pBuffer && iBufferSize > 0);
+
+ if (m_IsWriteStream)
+ return -1;
+
+ iBufferSize = std::min(
+ iBufferSize, static_cast<FX_STRSIZE>(m_pStream->GetSize() - m_iPosition));
+ if (iBufferSize <= 0)
+ return 0;
+
+ if (m_pStream->ReadBlock(pBuffer, m_iPosition, iBufferSize)) {
+ pdfium::base::CheckedNumeric<FX_FILESIZE> new_pos = m_iPosition;
+ new_pos += iBufferSize;
+ if (!new_pos.IsValid())
+ return 0;
+
+ m_iPosition = new_pos.ValueOrDie();
+ return iBufferSize;
+ }
+ return 0;
+}
+
FX_STRSIZE CFGAS_Stream::ReadString(wchar_t* pStr,
FX_STRSIZE iMaxLength,
bool* bEOS) {
@@ -387,6 +340,21 @@ FX_STRSIZE CFGAS_Stream::ReadString(wchar_t* pStr,
return iMaxLength;
}
+void CFGAS_Stream::WriteData(const CFX_WideStringC& str) {
+ if (!m_IsWriteStream || str.GetLength() == 0)
+ return;
+ if (m_pStream->WriteBlock(str.c_str(), m_iPosition,
+ str.GetLength() * sizeof(wchar_t))) {
+ pdfium::base::CheckedNumeric<FX_STRSIZE> new_pos = m_iPosition;
+ new_pos += str.GetLength() * sizeof(wchar_t);
+ // TODO(dsinclair): Not sure what to do if we over flow ....
+ if (!new_pos.IsValid())
+ return;
+
+ m_iPosition = new_pos.ValueOrDie();
+ }
+}
+
void CFGAS_Stream::WriteString(const CFX_WideStringC& str) {
if (!m_IsWriteStream)
return;
@@ -441,7 +409,7 @@ CFX_RetainPtr<IFGAS_Stream> IFGAS_Stream::CreateReadStream(
if (!pFileRead)
return nullptr;
- return pdfium::MakeRetain<CFGAS_FileReadStreamImp>(pFileRead);
+ return pdfium::MakeRetain<CFGAS_Stream>(pFileRead, false);
}
// static
@@ -450,7 +418,7 @@ CFX_RetainPtr<IFGAS_Stream> IFGAS_Stream::CreateWriteStream(
if (!pFileWrite)
return nullptr;
- return pdfium::MakeRetain<CFGAS_FileWriteStreamImp>(pFileWrite);
+ return pdfium::MakeRetain<CFGAS_Stream>(pFileWrite, true);
}
// static
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 12:01:15 +0000