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Diffstat (limited to 'xfa/src/fde/css/fde_csssyntax.cpp')
-rw-r--r--xfa/src/fde/css/fde_csssyntax.cpp487
1 files changed, 0 insertions, 487 deletions
diff --git a/xfa/src/fde/css/fde_csssyntax.cpp b/xfa/src/fde/css/fde_csssyntax.cpp
deleted file mode 100644
index 5fe502e8b9..0000000000
--- a/xfa/src/fde/css/fde_csssyntax.cpp
+++ /dev/null
@@ -1,487 +0,0 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include "xfa/src/fde/css/fde_csssyntax.h"
-
-#include "xfa/src/fde/css/fde_cssdatatable.h"
-#include "xfa/src/fgas/crt/fgas_codepage.h"
-
-#ifdef _cplusplus
-extern "C" {
-#endif
-
-inline FX_BOOL FDE_IsSelectorStart(FX_WCHAR wch) {
- return wch == '.' || wch == '#' || wch == '*' || (wch >= 'a' && wch <= 'z') ||
- (wch >= 'A' && wch <= 'Z');
-}
-
-#ifdef _cplusplus
-};
-#endif
-
-IFDE_CSSSyntaxParser* IFDE_CSSSyntaxParser::Create() {
- return new CFDE_CSSSyntaxParser;
-}
-CFDE_CSSSyntaxParser::CFDE_CSSSyntaxParser()
- : m_pStream(NULL),
- m_iStreamPos(0),
- m_iPlaneSize(0),
- m_iTextDatLen(0),
- m_dwCheck((FX_DWORD)-1),
- m_eMode(FDE_CSSSYNTAXMODE_RuleSet),
- m_eStatus(FDE_CSSSYNTAXSTATUS_None) {}
-CFDE_CSSSyntaxParser::~CFDE_CSSSyntaxParser() {
- m_TextData.Reset();
- m_TextPlane.Reset();
-}
-FX_BOOL CFDE_CSSSyntaxParser::Init(IFX_Stream* pStream,
- int32_t iCSSPlaneSize,
- int32_t iTextDataSize,
- FX_BOOL bOnlyDeclaration) {
- FXSYS_assert(pStream != NULL && iCSSPlaneSize > 0 && iTextDataSize > 0);
- Reset(bOnlyDeclaration);
- if (!m_TextData.EstimateSize(iTextDataSize)) {
- return FALSE;
- }
- uint8_t bom[4];
- m_pStream = pStream;
- m_iStreamPos = m_pStream->GetBOM(bom);
- m_iPlaneSize = iCSSPlaneSize;
- return TRUE;
-}
-FX_BOOL CFDE_CSSSyntaxParser::Init(const FX_WCHAR* pBuffer,
- int32_t iBufferSize,
- int32_t iTextDatSize,
- FX_BOOL bOnlyDeclaration) {
- FXSYS_assert(pBuffer != NULL && iBufferSize > 0 && iTextDatSize > 0);
- Reset(bOnlyDeclaration);
- if (!m_TextData.EstimateSize(iTextDatSize)) {
- return FALSE;
- }
- return m_TextPlane.AttachBuffer(pBuffer, iBufferSize);
-}
-void CFDE_CSSSyntaxParser::Reset(FX_BOOL bOnlyDeclaration) {
- m_TextPlane.Reset();
- m_TextData.Reset();
- m_pStream = NULL;
- m_iStreamPos = 0;
- m_iTextDatLen = 0;
- m_dwCheck = (FX_DWORD)-1;
- m_eStatus = FDE_CSSSYNTAXSTATUS_None;
- m_eMode = bOnlyDeclaration ? FDE_CSSSYNTAXMODE_PropertyName
- : FDE_CSSSYNTAXMODE_RuleSet;
-}
-FDE_CSSSYNTAXSTATUS CFDE_CSSSyntaxParser::DoSyntaxParse() {
- while (m_eStatus >= FDE_CSSSYNTAXSTATUS_None) {
- if (m_TextPlane.IsEOF()) {
- if (m_pStream == NULL) {
- if (m_eMode == FDE_CSSSYNTAXMODE_PropertyValue &&
- m_TextData.GetLength() > 0) {
- SaveTextData();
- return m_eStatus = FDE_CSSSYNTAXSTATUS_PropertyValue;
- }
- return m_eStatus = FDE_CSSSYNTAXSTATUS_EOS;
- }
- FX_BOOL bEOS;
- int32_t iLen = m_TextPlane.LoadFromStream(m_pStream, m_iStreamPos,
- m_iPlaneSize, bEOS);
- m_iStreamPos = m_pStream->GetPosition();
- if (iLen < 1) {
- if (m_eMode == FDE_CSSSYNTAXMODE_PropertyValue &&
- m_TextData.GetLength() > 0) {
- SaveTextData();
- return m_eStatus = FDE_CSSSYNTAXSTATUS_PropertyValue;
- }
- return m_eStatus = FDE_CSSSYNTAXSTATUS_EOS;
- }
- }
- FX_WCHAR wch;
- while (!m_TextPlane.IsEOF()) {
- wch = m_TextPlane.GetChar();
- switch (m_eMode) {
- case FDE_CSSSYNTAXMODE_RuleSet:
- switch (wch) {
- case '@':
- m_TextPlane.MoveNext();
- SwitchMode(FDE_CSSSYNTAXMODE_AtRule);
- break;
- case '}':
- m_TextPlane.MoveNext();
- if (RestoreMode()) {
- return FDE_CSSSYNTAXSTATUS_DeclClose;
- } else {
- return m_eStatus = FDE_CSSSYNTAXSTATUS_Error;
- }
- break;
- case '/':
- if (m_TextPlane.GetNextChar() == '*') {
- m_ModeStack.Push(m_eMode);
- SwitchMode(FDE_CSSSYNTAXMODE_Comment);
- break;
- }
- default:
- if (wch <= ' ') {
- m_TextPlane.MoveNext();
- } else if (FDE_IsSelectorStart(wch)) {
- SwitchMode(FDE_CSSSYNTAXMODE_Selector);
- return FDE_CSSSYNTAXSTATUS_StyleRule;
- } else {
- return m_eStatus = FDE_CSSSYNTAXSTATUS_Error;
- }
- break;
- }
- break;
- case FDE_CSSSYNTAXMODE_Selector:
- switch (wch) {
- case ',':
- m_TextPlane.MoveNext();
- SwitchMode(FDE_CSSSYNTAXMODE_Selector);
- if (m_iTextDatLen > 0) {
- return FDE_CSSSYNTAXSTATUS_Selector;
- }
- break;
- case '{':
- if (m_TextData.GetLength() > 0) {
- SaveTextData();
- return FDE_CSSSYNTAXSTATUS_Selector;
- } else {
- m_TextPlane.MoveNext();
- m_ModeStack.Push(FDE_CSSSYNTAXMODE_RuleSet);
- SwitchMode(FDE_CSSSYNTAXMODE_PropertyName);
- return FDE_CSSSYNTAXSTATUS_DeclOpen;
- }
- break;
- case '/':
- if (m_TextPlane.GetNextChar() == '*') {
- if (SwitchToComment() > 0) {
- return FDE_CSSSYNTAXSTATUS_Selector;
- }
- break;
- }
- default:
- AppendChar(wch);
- break;
- }
- break;
- case FDE_CSSSYNTAXMODE_PropertyName:
- switch (wch) {
- case ':':
- m_TextPlane.MoveNext();
- SwitchMode(FDE_CSSSYNTAXMODE_PropertyValue);
- return FDE_CSSSYNTAXSTATUS_PropertyName;
- case '}':
- m_TextPlane.MoveNext();
- if (RestoreMode()) {
- return FDE_CSSSYNTAXSTATUS_DeclClose;
- } else {
- return m_eStatus = FDE_CSSSYNTAXSTATUS_Error;
- }
- break;
- case '/':
- if (m_TextPlane.GetNextChar() == '*') {
- if (SwitchToComment() > 0) {
- return FDE_CSSSYNTAXSTATUS_PropertyName;
- }
- break;
- }
- default:
- AppendChar(wch);
- break;
- }
- break;
- case FDE_CSSSYNTAXMODE_PropertyValue:
- switch (wch) {
- case ';':
- m_TextPlane.MoveNext();
- case '}':
- SwitchMode(FDE_CSSSYNTAXMODE_PropertyName);
- return FDE_CSSSYNTAXSTATUS_PropertyValue;
- case '/':
- if (m_TextPlane.GetNextChar() == '*') {
- if (SwitchToComment() > 0) {
- return FDE_CSSSYNTAXSTATUS_PropertyValue;
- }
- break;
- }
- default:
- AppendChar(wch);
- break;
- }
- break;
- case FDE_CSSSYNTAXMODE_Comment:
- if (wch == '/' && m_TextData.GetLength() > 0 &&
- m_TextData.GetAt(m_TextData.GetLength() - 1) == '*') {
- RestoreMode();
- } else {
- m_TextData.AppendChar(wch);
- }
- m_TextPlane.MoveNext();
- break;
- case FDE_CSSSYNTAXMODE_MediaType:
- switch (wch) {
- case ',':
- m_TextPlane.MoveNext();
- SwitchMode(FDE_CSSSYNTAXMODE_MediaType);
- if (m_iTextDatLen > 0) {
- return FDE_CSSSYNTAXSTATUS_MediaType;
- }
- break;
- case '{': {
- FDE_CSSSYNTAXMODE* pMode = m_ModeStack.GetTopElement();
- if (pMode == NULL || *pMode != FDE_CSSSYNTAXMODE_MediaRule) {
- return m_eStatus = FDE_CSSSYNTAXSTATUS_Error;
- }
- if (m_TextData.GetLength() > 0) {
- SaveTextData();
- return FDE_CSSSYNTAXSTATUS_MediaType;
- } else {
- m_TextPlane.MoveNext();
- *pMode = FDE_CSSSYNTAXMODE_RuleSet;
- SwitchMode(FDE_CSSSYNTAXMODE_RuleSet);
- return FDE_CSSSYNTAXSTATUS_DeclOpen;
- }
- } break;
- case ';': {
- FDE_CSSSYNTAXMODE* pMode = m_ModeStack.GetTopElement();
- if (pMode == NULL || *pMode != FDE_CSSSYNTAXMODE_Import) {
- return m_eStatus = FDE_CSSSYNTAXSTATUS_Error;
- }
- if (m_TextData.GetLength() > 0) {
- SaveTextData();
- if (IsImportEnabled()) {
- return FDE_CSSSYNTAXSTATUS_MediaType;
- }
- } else {
- FX_BOOL bEnabled = IsImportEnabled();
- m_TextPlane.MoveNext();
- m_ModeStack.Pop();
- SwitchMode(FDE_CSSSYNTAXMODE_RuleSet);
- if (bEnabled) {
- DisableImport();
- return FDE_CSSSYNTAXSTATUS_ImportClose;
- }
- }
- } break;
- case '/':
- if (m_TextPlane.GetNextChar() == '*') {
- if (SwitchToComment() > 0) {
- return FDE_CSSSYNTAXSTATUS_MediaType;
- }
- break;
- }
- default:
- AppendChar(wch);
- break;
- }
- break;
- case FDE_CSSSYNTAXMODE_URI: {
- FDE_CSSSYNTAXMODE* pMode = m_ModeStack.GetTopElement();
- if (pMode == NULL || *pMode != FDE_CSSSYNTAXMODE_Import) {
- return m_eStatus = FDE_CSSSYNTAXSTATUS_Error;
- }
- if (wch <= ' ' || wch == ';') {
- int32_t iURIStart, iURILength = m_TextData.GetLength();
- if (iURILength > 0 &&
- FDE_ParseCSSURI(m_TextData.GetBuffer(), iURILength, iURIStart,
- iURILength)) {
- m_TextData.Subtract(iURIStart, iURILength);
- SwitchMode(FDE_CSSSYNTAXMODE_MediaType);
- if (IsImportEnabled()) {
- return FDE_CSSSYNTAXSTATUS_URI;
- } else {
- break;
- }
- }
- }
- AppendChar(wch);
- } break;
- case FDE_CSSSYNTAXMODE_AtRule:
- if (wch > ' ') {
- AppendChar(wch);
- } else {
- int32_t iLen = m_TextData.GetLength();
- const FX_WCHAR* psz = m_TextData.GetBuffer();
- if (FXSYS_wcsncmp(L"charset", psz, iLen) == 0) {
- SwitchMode(FDE_CSSSYNTAXMODE_Charset);
- } else if (FXSYS_wcsncmp(L"import", psz, iLen) == 0) {
- m_ModeStack.Push(FDE_CSSSYNTAXMODE_Import);
- SwitchMode(FDE_CSSSYNTAXMODE_URI);
- if (IsImportEnabled()) {
- return FDE_CSSSYNTAXSTATUS_ImportRule;
- } else {
- break;
- }
- } else if (FXSYS_wcsncmp(L"media", psz, iLen) == 0) {
- m_ModeStack.Push(FDE_CSSSYNTAXMODE_MediaRule);
- SwitchMode(FDE_CSSSYNTAXMODE_MediaType);
- return FDE_CSSSYNTAXSTATUS_MediaRule;
- } else if (FXSYS_wcsncmp(L"font-face", psz, iLen) == 0) {
- SwitchMode(FDE_CSSSYNTAXMODE_Selector);
- return FDE_CSSSYNTAXSTATUS_FontFaceRule;
- } else if (FXSYS_wcsncmp(L"page", psz, iLen) == 0) {
- SwitchMode(FDE_CSSSYNTAXMODE_Selector);
- return FDE_CSSSYNTAXSTATUS_PageRule;
- } else {
- SwitchMode(FDE_CSSSYNTAXMODE_UnknownRule);
- }
- }
- break;
- case FDE_CSSSYNTAXMODE_Charset:
- if (wch == ';') {
- m_TextPlane.MoveNext();
- SwitchMode(FDE_CSSSYNTAXMODE_RuleSet);
- if (IsCharsetEnabled()) {
- DisableCharset();
- if (m_iTextDatLen > 0) {
- if (m_pStream != NULL) {
- FX_WORD wCodePage = FX_GetCodePageFormStringW(
- m_TextData.GetBuffer(), m_iTextDatLen);
- if (wCodePage < 0xFFFF &&
- m_pStream->GetCodePage() != wCodePage) {
- m_pStream->SetCodePage(wCodePage);
- }
- }
- return FDE_CSSSYNTAXSTATUS_Charset;
- }
- }
- } else {
- AppendChar(wch);
- }
- break;
- case FDE_CSSSYNTAXMODE_UnknownRule:
- if (wch == ';') {
- SwitchMode(FDE_CSSSYNTAXMODE_RuleSet);
- }
- m_TextPlane.MoveNext();
- break;
- default:
- FXSYS_assert(FALSE);
- break;
- }
- }
- }
- return m_eStatus;
-}
-FX_BOOL CFDE_CSSSyntaxParser::IsImportEnabled() const {
- if ((m_dwCheck & FDE_CSSSYNTAXCHECK_AllowImport) == 0) {
- return FALSE;
- }
- if (m_ModeStack.GetSize() > 1) {
- return FALSE;
- }
- return TRUE;
-}
-inline FX_BOOL CFDE_CSSSyntaxParser::AppendChar(FX_WCHAR wch) {
- m_TextPlane.MoveNext();
- if (m_TextData.GetLength() > 0 || wch > ' ') {
- m_TextData.AppendChar(wch);
- return TRUE;
- }
- return FALSE;
-}
-inline int32_t CFDE_CSSSyntaxParser::SaveTextData() {
- m_iTextDatLen = m_TextData.TrimEnd();
- m_TextData.Clear();
- return m_iTextDatLen;
-}
-inline void CFDE_CSSSyntaxParser::SwitchMode(FDE_CSSSYNTAXMODE eMode) {
- m_eMode = eMode;
- SaveTextData();
-}
-inline int32_t CFDE_CSSSyntaxParser::SwitchToComment() {
- int32_t iLength = m_TextData.GetLength();
- m_ModeStack.Push(m_eMode);
- SwitchMode(FDE_CSSSYNTAXMODE_Comment);
- return iLength;
-}
-inline FX_BOOL CFDE_CSSSyntaxParser::RestoreMode() {
- FDE_CSSSYNTAXMODE* pMode = m_ModeStack.GetTopElement();
- if (pMode == NULL) {
- return FALSE;
- }
- SwitchMode(*pMode);
- m_ModeStack.Pop();
- return TRUE;
-}
-const FX_WCHAR* CFDE_CSSSyntaxParser::GetCurrentString(int32_t& iLength) const {
- iLength = m_iTextDatLen;
- return m_TextData.GetBuffer();
-}
-CFDE_CSSTextBuf::CFDE_CSSTextBuf()
- : m_bExtBuf(FALSE),
- m_pBuffer(NULL),
- m_iBufLen(0),
- m_iDatLen(0),
- m_iDatPos(0) {}
-CFDE_CSSTextBuf::~CFDE_CSSTextBuf() {
- Reset();
-}
-void CFDE_CSSTextBuf::Reset() {
- if (!m_bExtBuf) {
- FX_Free(m_pBuffer);
- m_pBuffer = NULL;
- }
- m_iDatPos = m_iDatLen = m_iBufLen;
-}
-FX_BOOL CFDE_CSSTextBuf::AttachBuffer(const FX_WCHAR* pBuffer,
- int32_t iBufLen) {
- Reset();
- m_pBuffer = (FX_WCHAR*)pBuffer;
- m_iDatLen = m_iBufLen = iBufLen;
- return m_bExtBuf = TRUE;
-}
-FX_BOOL CFDE_CSSTextBuf::EstimateSize(int32_t iAllocSize) {
- FXSYS_assert(iAllocSize > 0);
- Clear();
- m_bExtBuf = FALSE;
- return ExpandBuf(iAllocSize);
-}
-int32_t CFDE_CSSTextBuf::LoadFromStream(IFX_Stream* pTxtStream,
- int32_t iStreamOffset,
- int32_t iMaxChars,
- FX_BOOL& bEOS) {
- FXSYS_assert(iStreamOffset >= 0 && iMaxChars > 0);
- Clear();
- m_bExtBuf = FALSE;
- if (!ExpandBuf(iMaxChars)) {
- return 0;
- }
- if (pTxtStream->GetPosition() != iStreamOffset) {
- pTxtStream->Seek(FX_STREAMSEEK_Begin, iStreamOffset);
- }
- m_iDatLen = pTxtStream->ReadString(m_pBuffer, iMaxChars, bEOS);
- return m_iDatLen;
-}
-FX_BOOL CFDE_CSSTextBuf::ExpandBuf(int32_t iDesiredSize) {
- if (m_bExtBuf) {
- return FALSE;
- }
- if (!m_pBuffer) {
- m_pBuffer = FX_Alloc(FX_WCHAR, iDesiredSize);
- } else if (m_iBufLen != iDesiredSize) {
- m_pBuffer = FX_Realloc(FX_WCHAR, m_pBuffer, iDesiredSize);
- } else {
- return TRUE;
- }
- if (!m_pBuffer) {
- m_iBufLen = 0;
- return FALSE;
- }
- m_iBufLen = iDesiredSize;
- return TRUE;
-}
-void CFDE_CSSTextBuf::Subtract(int32_t iStart, int32_t iLength) {
- FXSYS_assert(iStart >= 0 && iLength > 0);
- if (iLength > m_iDatLen - iStart) {
- iLength = m_iDatLen - iStart;
- }
- if (iLength < 0) {
- iLength = 0;
- } else {
- FXSYS_memmove(m_pBuffer, m_pBuffer + iStart, iLength * sizeof(FX_WCHAR));
- }
- m_iDatLen = iLength;
-}
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