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-rw-r--r--xfa/fgas/crt/ifgas_stream.cpp129
-rw-r--r--xfa/fgas/crt/ifgas_stream.h2
2 files changed, 127 insertions, 4 deletions
diff --git a/xfa/fgas/crt/ifgas_stream.cpp b/xfa/fgas/crt/ifgas_stream.cpp
index dcd13b162e..f36ebb556b 100644
--- a/xfa/fgas/crt/ifgas_stream.cpp
+++ b/xfa/fgas/crt/ifgas_stream.cpp
@@ -15,7 +15,9 @@
#include <memory>
#include <utility>
+#include "core/fxcrt/fx_ext.h"
#include "third_party/base/ptr_util.h"
+#include "third_party/base/stl_util.h"
#include "xfa/fgas/crt/fgas_codepage.h"
namespace {
@@ -67,7 +69,7 @@ class CFGAS_FileReadStreamImp : public IFGAS_StreamImp {
void Flush() override {}
bool SetLength(int32_t iLength) override { return false; }
- protected:
+ private:
CFX_RetainPtr<IFX_SeekableReadStream> m_pFileRead;
int32_t m_iPosition;
int32_t m_iLength;
@@ -95,7 +97,7 @@ class CFGAS_FileWriteStreamImp : public IFGAS_StreamImp {
void Flush() override;
bool SetLength(int32_t iLength) override { return false; }
- protected:
+ private:
CFX_RetainPtr<IFX_SeekableWriteStream> m_pFileWrite;
int32_t m_iPosition;
};
@@ -121,7 +123,7 @@ class CFGAS_Stream : public IFGAS_Stream {
uint16_t GetCodePage() const override;
uint16_t SetCodePage(uint16_t wCodePage) override;
- protected:
+ private:
CFGAS_Stream(std::unique_ptr<IFGAS_StreamImp> imp, uint32_t dwAccess);
~CFGAS_Stream() override;
@@ -155,7 +157,7 @@ class CFGAS_TextStream : public IFGAS_Stream {
uint16_t GetCodePage() const override;
uint16_t SetCodePage(uint16_t wCodePage) override;
- protected:
+ private:
explicit CFGAS_TextStream(const CFX_RetainPtr<IFGAS_Stream>& pStream);
~CFGAS_TextStream() override;
@@ -169,6 +171,35 @@ class CFGAS_TextStream : public IFGAS_Stream {
CFX_RetainPtr<IFGAS_Stream> m_pStreamImp;
};
+class CFGAS_WideStringReadStream : public IFGAS_Stream {
+ public:
+ template <typename T, typename... Args>
+ friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
+
+ // IFGAS_Stream
+ uint32_t GetAccessModes() const override;
+ int32_t GetLength() const override;
+ int32_t Seek(FX_STREAMSEEK eSeek, int32_t iOffset) override;
+ int32_t GetPosition() override;
+ bool IsEOF() const override;
+ int32_t ReadData(uint8_t* pBuffer, int32_t iBufferSize) override;
+ int32_t ReadString(wchar_t* pStr, int32_t iMaxLength, bool& bEOS) override;
+ int32_t WriteData(const uint8_t* pBuffer, int32_t iBufferSize) override;
+ int32_t WriteString(const wchar_t* pStr, int32_t iLength) override;
+ void Flush() override {}
+ bool SetLength(int32_t iLength) override;
+ int32_t GetBOM(uint8_t bom[4]) const override;
+ uint16_t GetCodePage() const override;
+ uint16_t SetCodePage(uint16_t wCodePage) override;
+
+ private:
+ explicit CFGAS_WideStringReadStream(const CFX_WideString& wsBuffer);
+ ~CFGAS_WideStringReadStream() override;
+
+ CFX_WideString m_wsBuffer;
+ int32_t m_iPosition;
+};
+
IFGAS_StreamImp::IFGAS_StreamImp() : m_dwAccess(0) {}
CFGAS_FileReadStreamImp::CFGAS_FileReadStreamImp()
@@ -186,6 +217,7 @@ bool CFGAS_FileReadStreamImp::LoadFileRead(
int32_t CFGAS_FileReadStreamImp::GetLength() const {
return m_iLength;
}
+
int32_t CFGAS_FileReadStreamImp::Seek(FX_STREAMSEEK eSeek, int32_t iOffset) {
switch (eSeek) {
case FX_STREAMSEEK_Begin:
@@ -205,6 +237,7 @@ int32_t CFGAS_FileReadStreamImp::Seek(FX_STREAMSEEK eSeek, int32_t iOffset) {
}
return m_iPosition;
}
+
bool CFGAS_FileReadStreamImp::IsEOF() const {
return m_iPosition >= m_iLength;
}
@@ -650,6 +683,88 @@ uint16_t CFGAS_Stream::SetCodePage(uint16_t wCodePage) {
#endif
}
+CFGAS_WideStringReadStream::CFGAS_WideStringReadStream(
+ const CFX_WideString& wsBuffer)
+ : m_wsBuffer(wsBuffer), m_iPosition(0) {}
+
+CFGAS_WideStringReadStream::~CFGAS_WideStringReadStream() {}
+
+uint32_t CFGAS_WideStringReadStream::GetAccessModes() const {
+ return 0;
+}
+
+int32_t CFGAS_WideStringReadStream::GetLength() const {
+ return m_wsBuffer.GetLength() * sizeof(wchar_t);
+}
+
+int32_t CFGAS_WideStringReadStream::Seek(FX_STREAMSEEK eSeek, int32_t iOffset) {
+ switch (eSeek) {
+ case FX_STREAMSEEK_Begin:
+ m_iPosition = iOffset;
+ break;
+ case FX_STREAMSEEK_Current:
+ m_iPosition += iOffset;
+ break;
+ case FX_STREAMSEEK_End:
+ m_iPosition = m_wsBuffer.GetLength() + iOffset;
+ break;
+ }
+ m_iPosition = pdfium::clamp(0, m_iPosition, m_wsBuffer.GetLength());
+ return GetPosition();
+}
+
+int32_t CFGAS_WideStringReadStream::GetPosition() {
+ return m_iPosition * sizeof(wchar_t);
+}
+
+bool CFGAS_WideStringReadStream::IsEOF() const {
+ return m_iPosition >= m_wsBuffer.GetLength();
+}
+
+int32_t CFGAS_WideStringReadStream::ReadData(uint8_t* pBuffer,
+ int32_t iBufferSize) {
+ return 0;
+}
+
+int32_t CFGAS_WideStringReadStream::ReadString(wchar_t* pStr,
+ int32_t iMaxLength,
+ bool& bEOS) {
+ iMaxLength = std::min(iMaxLength, m_wsBuffer.GetLength() - m_iPosition);
+ if (iMaxLength == 0)
+ return 0;
+
+ FXSYS_wcsncpy(pStr, m_wsBuffer.c_str() + m_iPosition, iMaxLength);
+ m_iPosition += iMaxLength;
+ bEOS = IsEOF();
+ return iMaxLength;
+}
+
+int32_t CFGAS_WideStringReadStream::WriteData(const uint8_t* pBuffer,
+ int32_t iBufferSize) {
+ return 0;
+}
+
+int32_t CFGAS_WideStringReadStream::WriteString(const wchar_t* pStr,
+ int32_t iLength) {
+ return 0;
+}
+
+bool CFGAS_WideStringReadStream::SetLength(int32_t iLength) {
+ return false;
+}
+
+int32_t CFGAS_WideStringReadStream::GetBOM(uint8_t bom[4]) const {
+ return 0;
+}
+
+uint16_t CFGAS_WideStringReadStream::GetCodePage() const {
+ return (sizeof(wchar_t) == 2) ? FX_CODEPAGE_UTF16LE : FX_CODEPAGE_UTF32LE;
+}
+
+uint16_t CFGAS_WideStringReadStream::SetCodePage(uint16_t wCodePage) {
+ return GetCodePage();
+}
+
} // namespace
// static
@@ -684,3 +799,9 @@ CFX_RetainPtr<IFGAS_Stream> IFGAS_Stream::CreateWriteStream(
return pdfium::MakeRetain<CFGAS_TextStream>(
pdfium::MakeRetain<CFGAS_Stream>(std::move(pImp), FX_STREAMACCESS_Write));
}
+
+// static
+CFX_RetainPtr<IFGAS_Stream> IFGAS_Stream::CreateWideStringReadStream(
+ const CFX_WideString& buffer) {
+ return pdfium::MakeRetain<CFGAS_WideStringReadStream>(buffer);
+}
diff --git a/xfa/fgas/crt/ifgas_stream.h b/xfa/fgas/crt/ifgas_stream.h
index d8efc41afd..df9d93afa3 100644
--- a/xfa/fgas/crt/ifgas_stream.h
+++ b/xfa/fgas/crt/ifgas_stream.h
@@ -27,6 +27,8 @@ class IFGAS_Stream : public CFX_Retainable {
const CFX_RetainPtr<IFX_SeekableReadStream>& pFileRead);
static CFX_RetainPtr<IFGAS_Stream> CreateWriteStream(
const CFX_RetainPtr<IFX_SeekableWriteStream>& pFileWrite);
+ static CFX_RetainPtr<IFGAS_Stream> CreateWideStringReadStream(
+ const CFX_WideString& buffer);
virtual uint32_t GetAccessModes() const = 0;
virtual int32_t GetLength() const = 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 19:21:33 +0000