| // Copyright 2017 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 "core/fxcrt/xml/cfx_xmlsyntaxparser.h" |
| |
| #include <algorithm> |
| #include <cwctype> |
| #include <iterator> |
| |
| #include "core/fxcrt/fx_extension.h" |
| #include "core/fxcrt/fx_safe_types.h" |
| |
| namespace { |
| |
| const uint32_t kMaxCharRange = 0x10ffff; |
| |
| bool IsXMLWhiteSpace(wchar_t ch) { |
| return ch == L' ' || ch == 0x0A || ch == 0x0D || ch == 0x09; |
| } |
| |
| struct FX_XMLNAMECHAR { |
| uint16_t wStart; |
| uint16_t wEnd; |
| bool bStartChar; |
| }; |
| |
| const FX_XMLNAMECHAR g_XMLNameChars[] = { |
| {L'-', L'.', false}, {L'0', L'9', false}, {L':', L':', false}, |
| {L'A', L'Z', true}, {L'_', L'_', true}, {L'a', L'z', true}, |
| {0xB7, 0xB7, false}, {0xC0, 0xD6, true}, {0xD8, 0xF6, true}, |
| {0xF8, 0x02FF, true}, {0x0300, 0x036F, false}, {0x0370, 0x037D, true}, |
| {0x037F, 0x1FFF, true}, {0x200C, 0x200D, true}, {0x203F, 0x2040, false}, |
| {0x2070, 0x218F, true}, {0x2C00, 0x2FEF, true}, {0x3001, 0xD7FF, true}, |
| {0xF900, 0xFDCF, true}, {0xFDF0, 0xFFFD, true}, |
| }; |
| |
| |
| int32_t GetUTF8EncodeLength(const std::vector<wchar_t>& src, |
| FX_FILESIZE iSrcLen) { |
| uint32_t unicode = 0; |
| int32_t iDstNum = 0; |
| const wchar_t* pSrc = src.data(); |
| while (iSrcLen-- > 0) { |
| unicode = *pSrc++; |
| int nbytes = 0; |
| if ((uint32_t)unicode < 0x80) { |
| nbytes = 1; |
| } else if ((uint32_t)unicode < 0x800) { |
| nbytes = 2; |
| } else if ((uint32_t)unicode < 0x10000) { |
| nbytes = 3; |
| } else if ((uint32_t)unicode < 0x200000) { |
| nbytes = 4; |
| } else if ((uint32_t)unicode < 0x4000000) { |
| nbytes = 5; |
| } else { |
| nbytes = 6; |
| } |
| iDstNum += nbytes; |
| } |
| return iDstNum; |
| } |
| |
| } // namespace |
| |
| // static |
| bool CFX_XMLSyntaxParser::IsXMLNameChar(wchar_t ch, bool bFirstChar) { |
| auto* it = std::lower_bound( |
| std::begin(g_XMLNameChars), std::end(g_XMLNameChars), ch, |
| [](const FX_XMLNAMECHAR& arg, wchar_t ch) { return arg.wEnd < ch; }); |
| return it != std::end(g_XMLNameChars) && ch >= it->wStart && |
| (!bFirstChar || it->bStartChar); |
| } |
| |
| CFX_XMLSyntaxParser::CFX_XMLSyntaxParser( |
| const RetainPtr<CFX_SeekableStreamProxy>& pStream) |
| : m_pStream(pStream), |
| m_iXMLPlaneSize(32 * 1024), |
| m_iCurrentPos(0), |
| m_iCurrentNodeNum(-1), |
| m_iLastNodeNum(-1), |
| m_iParsedBytes(0), |
| m_ParsedChars(0), |
| m_iBufferChars(0), |
| m_bEOS(false), |
| m_Start(0), |
| m_End(0), |
| m_iAllocStep(m_BlockBuffer.GetAllocStep()), |
| m_pCurrentBlock(nullptr), |
| m_iIndexInBlock(0), |
| m_iTextDataLength(0), |
| m_syntaxParserResult(FX_XmlSyntaxResult::None), |
| m_syntaxParserState(FDE_XmlSyntaxState::Text), |
| m_wQuotationMark(0), |
| m_iEntityStart(-1) { |
| ASSERT(pStream); |
| |
| m_CurNode.iNodeNum = -1; |
| m_CurNode.eNodeType = FX_XMLNODE_Unknown; |
| |
| m_iXMLPlaneSize = |
| std::min(m_iXMLPlaneSize, |
| pdfium::base::checked_cast<size_t>(m_pStream->GetLength())); |
| m_iCurrentPos = m_pStream->GetBOMLength(); |
| |
| FX_SAFE_SIZE_T alloc_size_safe = m_iXMLPlaneSize; |
| alloc_size_safe += 1; // For NUL. |
| if (!alloc_size_safe.IsValid() || alloc_size_safe.ValueOrDie() <= 0) { |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return; |
| } |
| |
| m_Buffer.resize(pdfium::base::ValueOrDieForType<size_t>(alloc_size_safe)); |
| |
| m_BlockBuffer.InitBuffer(); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| } |
| |
| CFX_XMLSyntaxParser::~CFX_XMLSyntaxParser() {} |
| |
| FX_XmlSyntaxResult CFX_XMLSyntaxParser::DoSyntaxParse() { |
| if (m_syntaxParserResult == FX_XmlSyntaxResult::Error || |
| m_syntaxParserResult == FX_XmlSyntaxResult::EndOfString) { |
| return m_syntaxParserResult; |
| } |
| |
| FX_FILESIZE iStreamLength = m_pStream->GetLength(); |
| FX_FILESIZE iPos; |
| |
| FX_XmlSyntaxResult syntaxParserResult = FX_XmlSyntaxResult::None; |
| while (true) { |
| if (m_Start >= m_End) { |
| if (m_bEOS || m_iCurrentPos >= iStreamLength) { |
| m_syntaxParserResult = FX_XmlSyntaxResult::EndOfString; |
| return m_syntaxParserResult; |
| } |
| m_ParsedChars += m_End; |
| m_iParsedBytes = m_iCurrentPos; |
| if (m_pStream->GetPosition() != m_iCurrentPos) |
| m_pStream->Seek(CFX_SeekableStreamProxy::From::Begin, m_iCurrentPos); |
| |
| m_iBufferChars = |
| m_pStream->ReadString(m_Buffer.data(), m_iXMLPlaneSize, &m_bEOS); |
| iPos = m_pStream->GetPosition(); |
| if (m_iBufferChars < 1) { |
| m_iCurrentPos = iStreamLength; |
| m_syntaxParserResult = FX_XmlSyntaxResult::EndOfString; |
| return m_syntaxParserResult; |
| } |
| m_iCurrentPos = iPos; |
| m_Start = 0; |
| m_End = m_iBufferChars; |
| } |
| |
| while (m_Start < m_End) { |
| wchar_t ch = m_Buffer[m_Start]; |
| switch (m_syntaxParserState) { |
| case FDE_XmlSyntaxState::Text: |
| if (ch == L'<') { |
| if (!m_BlockBuffer.IsEmpty()) { |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_iEntityStart = -1; |
| syntaxParserResult = FX_XmlSyntaxResult::Text; |
| } else { |
| m_Start++; |
| m_syntaxParserState = FDE_XmlSyntaxState::Node; |
| } |
| } else { |
| ParseTextChar(ch); |
| } |
| break; |
| case FDE_XmlSyntaxState::Node: |
| if (ch == L'!') { |
| m_Start++; |
| m_syntaxParserState = FDE_XmlSyntaxState::SkipCommentOrDecl; |
| } else if (ch == L'/') { |
| m_Start++; |
| m_syntaxParserState = FDE_XmlSyntaxState::CloseElement; |
| } else if (ch == L'?') { |
| m_iLastNodeNum++; |
| m_iCurrentNodeNum = m_iLastNodeNum; |
| m_CurNode.iNodeNum = m_iLastNodeNum; |
| m_CurNode.eNodeType = FX_XMLNODE_Instruction; |
| m_XMLNodeStack.push(m_CurNode); |
| m_Start++; |
| m_syntaxParserState = FDE_XmlSyntaxState::Target; |
| syntaxParserResult = FX_XmlSyntaxResult::InstructionOpen; |
| } else { |
| m_iLastNodeNum++; |
| m_iCurrentNodeNum = m_iLastNodeNum; |
| m_CurNode.iNodeNum = m_iLastNodeNum; |
| m_CurNode.eNodeType = FX_XMLNODE_Element; |
| m_XMLNodeStack.push(m_CurNode); |
| m_syntaxParserState = FDE_XmlSyntaxState::Tag; |
| syntaxParserResult = FX_XmlSyntaxResult::ElementOpen; |
| } |
| break; |
| case FDE_XmlSyntaxState::Target: |
| case FDE_XmlSyntaxState::Tag: |
| if (!IsXMLNameChar(ch, m_BlockBuffer.IsEmpty())) { |
| if (m_BlockBuffer.IsEmpty()) { |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } |
| |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| if (m_syntaxParserState != FDE_XmlSyntaxState::Target) |
| syntaxParserResult = FX_XmlSyntaxResult::TagName; |
| else |
| syntaxParserResult = FX_XmlSyntaxResult::TargetName; |
| |
| m_syntaxParserState = FDE_XmlSyntaxState::AttriName; |
| } else { |
| if (m_iIndexInBlock == m_iAllocStep) { |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| if (!m_pCurrentBlock) { |
| return FX_XmlSyntaxResult::Error; |
| } |
| } |
| m_pCurrentBlock[m_iIndexInBlock++] = ch; |
| m_BlockBuffer.IncrementDataLength(); |
| m_Start++; |
| } |
| break; |
| case FDE_XmlSyntaxState::AttriName: |
| if (m_BlockBuffer.IsEmpty() && IsXMLWhiteSpace(ch)) { |
| m_Start++; |
| break; |
| } |
| if (!IsXMLNameChar(ch, m_BlockBuffer.IsEmpty())) { |
| if (m_BlockBuffer.IsEmpty()) { |
| if (m_CurNode.eNodeType == FX_XMLNODE_Element) { |
| if (ch == L'>' || ch == L'/') { |
| m_syntaxParserState = FDE_XmlSyntaxState::BreakElement; |
| break; |
| } |
| } else if (m_CurNode.eNodeType == FX_XMLNODE_Instruction) { |
| if (ch == L'?') { |
| m_syntaxParserState = FDE_XmlSyntaxState::CloseInstruction; |
| m_Start++; |
| } else { |
| m_syntaxParserState = FDE_XmlSyntaxState::TargetData; |
| } |
| break; |
| } |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } else { |
| if (m_CurNode.eNodeType == FX_XMLNODE_Instruction) { |
| if (ch != '=' && !IsXMLWhiteSpace(ch)) { |
| m_syntaxParserState = FDE_XmlSyntaxState::TargetData; |
| break; |
| } |
| } |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_syntaxParserState = FDE_XmlSyntaxState::AttriEqualSign; |
| syntaxParserResult = FX_XmlSyntaxResult::AttriName; |
| } |
| } else { |
| if (m_iIndexInBlock == m_iAllocStep) { |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| if (!m_pCurrentBlock) { |
| return FX_XmlSyntaxResult::Error; |
| } |
| } |
| m_pCurrentBlock[m_iIndexInBlock++] = ch; |
| m_BlockBuffer.IncrementDataLength(); |
| m_Start++; |
| } |
| break; |
| case FDE_XmlSyntaxState::AttriEqualSign: |
| if (IsXMLWhiteSpace(ch)) { |
| m_Start++; |
| break; |
| } |
| if (ch != L'=') { |
| if (m_CurNode.eNodeType == FX_XMLNODE_Instruction) { |
| m_syntaxParserState = FDE_XmlSyntaxState::TargetData; |
| break; |
| } |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } else { |
| m_syntaxParserState = FDE_XmlSyntaxState::AttriQuotation; |
| m_Start++; |
| } |
| break; |
| case FDE_XmlSyntaxState::AttriQuotation: |
| if (IsXMLWhiteSpace(ch)) { |
| m_Start++; |
| break; |
| } |
| if (ch != L'\"' && ch != L'\'') { |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } else { |
| m_wQuotationMark = ch; |
| m_syntaxParserState = FDE_XmlSyntaxState::AttriValue; |
| m_Start++; |
| } |
| break; |
| case FDE_XmlSyntaxState::AttriValue: |
| if (ch == m_wQuotationMark) { |
| if (m_iEntityStart > -1) { |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_wQuotationMark = 0; |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_Start++; |
| m_syntaxParserState = FDE_XmlSyntaxState::AttriName; |
| syntaxParserResult = FX_XmlSyntaxResult::AttriValue; |
| } else { |
| ParseTextChar(ch); |
| } |
| break; |
| case FDE_XmlSyntaxState::CloseInstruction: |
| if (ch != L'>') { |
| if (m_iIndexInBlock == m_iAllocStep) { |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| if (!m_pCurrentBlock) { |
| return FX_XmlSyntaxResult::Error; |
| } |
| } |
| m_pCurrentBlock[m_iIndexInBlock++] = ch; |
| m_BlockBuffer.IncrementDataLength(); |
| m_syntaxParserState = FDE_XmlSyntaxState::TargetData; |
| } else if (!m_BlockBuffer.IsEmpty()) { |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| syntaxParserResult = FX_XmlSyntaxResult::TargetData; |
| } else { |
| m_Start++; |
| if (m_XMLNodeStack.empty()) { |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } |
| m_XMLNodeStack.pop(); |
| if (!m_XMLNodeStack.empty()) { |
| m_CurNode = m_XMLNodeStack.top(); |
| } else { |
| m_CurNode.iNodeNum = -1; |
| m_CurNode.eNodeType = FX_XMLNODE_Unknown; |
| } |
| m_iCurrentNodeNum = m_CurNode.iNodeNum; |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_syntaxParserState = FDE_XmlSyntaxState::Text; |
| syntaxParserResult = FX_XmlSyntaxResult::InstructionClose; |
| } |
| break; |
| case FDE_XmlSyntaxState::BreakElement: |
| if (ch == L'>') { |
| m_syntaxParserState = FDE_XmlSyntaxState::Text; |
| syntaxParserResult = FX_XmlSyntaxResult::ElementBreak; |
| } else if (ch == L'/') { |
| m_syntaxParserState = FDE_XmlSyntaxState::CloseElement; |
| } else { |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } |
| m_Start++; |
| break; |
| case FDE_XmlSyntaxState::CloseElement: |
| if (!IsXMLNameChar(ch, m_BlockBuffer.IsEmpty())) { |
| if (ch == L'>') { |
| if (m_XMLNodeStack.empty()) { |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } |
| m_XMLNodeStack.pop(); |
| if (!m_XMLNodeStack.empty()) { |
| m_CurNode = m_XMLNodeStack.top(); |
| } else { |
| m_CurNode.iNodeNum = -1; |
| m_CurNode.eNodeType = FX_XMLNODE_Unknown; |
| } |
| m_iCurrentNodeNum = m_CurNode.iNodeNum; |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_syntaxParserState = FDE_XmlSyntaxState::Text; |
| syntaxParserResult = FX_XmlSyntaxResult::ElementClose; |
| } else if (!IsXMLWhiteSpace(ch)) { |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } |
| } else { |
| if (m_iIndexInBlock == m_iAllocStep) { |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| if (!m_pCurrentBlock) { |
| return FX_XmlSyntaxResult::Error; |
| } |
| } |
| m_pCurrentBlock[m_iIndexInBlock++] = ch; |
| m_BlockBuffer.IncrementDataLength(); |
| } |
| m_Start++; |
| break; |
| case FDE_XmlSyntaxState::SkipCommentOrDecl: |
| if (FXSYS_wcsnicmp(m_Buffer.data() + m_Start, L"--", 2) == 0) { |
| m_Start += 2; |
| m_syntaxParserState = FDE_XmlSyntaxState::SkipComment; |
| } else if (FXSYS_wcsnicmp(m_Buffer.data() + m_Start, L"[CDATA[", 7) == |
| 0) { |
| m_Start += 7; |
| m_syntaxParserState = FDE_XmlSyntaxState::SkipCData; |
| } else { |
| m_syntaxParserState = FDE_XmlSyntaxState::SkipDeclNode; |
| m_SkipChar = L'>'; |
| m_SkipStack.push(L'>'); |
| } |
| break; |
| case FDE_XmlSyntaxState::SkipCData: { |
| if (FXSYS_wcsnicmp(m_Buffer.data() + m_Start, L"]]>", 3) == 0) { |
| m_Start += 3; |
| syntaxParserResult = FX_XmlSyntaxResult::CData; |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_syntaxParserState = FDE_XmlSyntaxState::Text; |
| } else { |
| if (m_iIndexInBlock == m_iAllocStep) { |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| if (!m_pCurrentBlock) |
| return FX_XmlSyntaxResult::Error; |
| } |
| m_pCurrentBlock[m_iIndexInBlock++] = ch; |
| m_BlockBuffer.IncrementDataLength(); |
| m_Start++; |
| } |
| break; |
| } |
| case FDE_XmlSyntaxState::SkipDeclNode: |
| if (m_SkipChar == L'\'' || m_SkipChar == L'\"') { |
| m_Start++; |
| if (ch != m_SkipChar) |
| break; |
| |
| m_SkipStack.pop(); |
| if (m_SkipStack.empty()) |
| m_syntaxParserState = FDE_XmlSyntaxState::Text; |
| else |
| m_SkipChar = m_SkipStack.top(); |
| } else { |
| switch (ch) { |
| case L'<': |
| m_SkipChar = L'>'; |
| m_SkipStack.push(L'>'); |
| break; |
| case L'[': |
| m_SkipChar = L']'; |
| m_SkipStack.push(L']'); |
| break; |
| case L'(': |
| m_SkipChar = L')'; |
| m_SkipStack.push(L')'); |
| break; |
| case L'\'': |
| m_SkipChar = L'\''; |
| m_SkipStack.push(L'\''); |
| break; |
| case L'\"': |
| m_SkipChar = L'\"'; |
| m_SkipStack.push(L'\"'); |
| break; |
| default: |
| if (ch == m_SkipChar) { |
| m_SkipStack.pop(); |
| if (m_SkipStack.empty()) { |
| if (m_BlockBuffer.GetDataLength() >= 9) |
| (void)m_BlockBuffer.GetTextData(0, 7); |
| |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_syntaxParserState = FDE_XmlSyntaxState::Text; |
| } else { |
| m_SkipChar = m_SkipStack.top(); |
| } |
| } |
| break; |
| } |
| if (!m_SkipStack.empty()) { |
| if (m_iIndexInBlock == m_iAllocStep) { |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| if (!m_pCurrentBlock) { |
| return FX_XmlSyntaxResult::Error; |
| } |
| } |
| m_pCurrentBlock[m_iIndexInBlock++] = ch; |
| m_BlockBuffer.IncrementDataLength(); |
| } |
| m_Start++; |
| } |
| break; |
| case FDE_XmlSyntaxState::SkipComment: |
| if (FXSYS_wcsnicmp(m_Buffer.data() + m_Start, L"-->", 3) == 0) { |
| m_Start += 2; |
| m_syntaxParserState = FDE_XmlSyntaxState::Text; |
| } |
| |
| m_Start++; |
| break; |
| case FDE_XmlSyntaxState::TargetData: |
| if (IsXMLWhiteSpace(ch)) { |
| if (m_BlockBuffer.IsEmpty()) { |
| m_Start++; |
| break; |
| } else if (m_wQuotationMark == 0) { |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_wQuotationMark = 0; |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_Start++; |
| syntaxParserResult = FX_XmlSyntaxResult::TargetData; |
| break; |
| } |
| } |
| if (ch == '?') { |
| m_syntaxParserState = FDE_XmlSyntaxState::CloseInstruction; |
| m_Start++; |
| } else if (ch == '\"') { |
| if (m_wQuotationMark == 0) { |
| m_wQuotationMark = ch; |
| m_Start++; |
| } else if (ch == m_wQuotationMark) { |
| m_iTextDataLength = m_BlockBuffer.GetDataLength(); |
| m_wQuotationMark = 0; |
| m_BlockBuffer.Reset(true); |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_Start++; |
| syntaxParserResult = FX_XmlSyntaxResult::TargetData; |
| } else { |
| m_syntaxParserResult = FX_XmlSyntaxResult::Error; |
| return m_syntaxParserResult; |
| } |
| } else { |
| if (m_iIndexInBlock == m_iAllocStep) { |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| if (!m_pCurrentBlock) { |
| return FX_XmlSyntaxResult::Error; |
| } |
| } |
| m_pCurrentBlock[m_iIndexInBlock++] = ch; |
| m_BlockBuffer.IncrementDataLength(); |
| m_Start++; |
| } |
| break; |
| default: |
| break; |
| } |
| if (syntaxParserResult != FX_XmlSyntaxResult::None) |
| return syntaxParserResult; |
| } |
| } |
| return FX_XmlSyntaxResult::Text; |
| } |
| |
| int32_t CFX_XMLSyntaxParser::GetStatus() const { |
| if (!m_pStream) |
| return -1; |
| |
| int32_t iStreamLength = m_pStream->GetLength(); |
| if (iStreamLength < 1) |
| return 100; |
| |
| if (m_syntaxParserResult == FX_XmlSyntaxResult::Error) |
| return -1; |
| |
| if (m_syntaxParserResult == FX_XmlSyntaxResult::EndOfString) |
| return 100; |
| return m_iParsedBytes * 100 / iStreamLength; |
| } |
| |
| FX_FILESIZE CFX_XMLSyntaxParser::GetCurrentBinaryPos() const { |
| if (!m_pStream) |
| return 0; |
| |
| int32_t nDstLen = GetUTF8EncodeLength(m_Buffer, m_Start); |
| return m_iParsedBytes + nDstLen; |
| } |
| |
| void CFX_XMLSyntaxParser::ParseTextChar(wchar_t character) { |
| if (m_iIndexInBlock == m_iAllocStep) { |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| if (!m_pCurrentBlock) |
| return; |
| } |
| |
| m_pCurrentBlock[m_iIndexInBlock++] = character; |
| m_BlockBuffer.IncrementDataLength(); |
| if (m_iEntityStart > -1 && character == L';') { |
| WideString csEntity = m_BlockBuffer.GetTextData( |
| m_iEntityStart + 1, |
| m_BlockBuffer.GetDataLength() - 1 - m_iEntityStart - 1); |
| int32_t iLen = csEntity.GetLength(); |
| if (iLen > 0) { |
| if (csEntity[0] == L'#') { |
| uint32_t ch = 0; |
| wchar_t w; |
| if (iLen > 1 && csEntity[1] == L'x') { |
| for (int32_t i = 2; i < iLen; i++) { |
| w = csEntity[i]; |
| if (std::iswdigit(w)) |
| ch = (ch << 4) + w - L'0'; |
| else if (w >= L'A' && w <= L'F') |
| ch = (ch << 4) + w - 55; |
| else if (w >= L'a' && w <= L'f') |
| ch = (ch << 4) + w - 87; |
| else |
| break; |
| } |
| } else { |
| for (int32_t i = 1; i < iLen; i++) { |
| w = csEntity[i]; |
| if (!std::iswdigit(w)) |
| break; |
| ch = ch * 10 + w - L'0'; |
| } |
| } |
| if (ch > kMaxCharRange) |
| ch = ' '; |
| |
| character = static_cast<wchar_t>(ch); |
| if (character != 0) { |
| m_BlockBuffer.SetTextChar(m_iEntityStart, character); |
| m_iEntityStart++; |
| } |
| } else { |
| if (csEntity.Compare(L"amp") == 0) { |
| m_BlockBuffer.SetTextChar(m_iEntityStart, L'&'); |
| m_iEntityStart++; |
| } else if (csEntity.Compare(L"lt") == 0) { |
| m_BlockBuffer.SetTextChar(m_iEntityStart, L'<'); |
| m_iEntityStart++; |
| } else if (csEntity.Compare(L"gt") == 0) { |
| m_BlockBuffer.SetTextChar(m_iEntityStart, L'>'); |
| m_iEntityStart++; |
| } else if (csEntity.Compare(L"apos") == 0) { |
| m_BlockBuffer.SetTextChar(m_iEntityStart, L'\''); |
| m_iEntityStart++; |
| } else if (csEntity.Compare(L"quot") == 0) { |
| m_BlockBuffer.SetTextChar(m_iEntityStart, L'\"'); |
| m_iEntityStart++; |
| } |
| } |
| } |
| if (m_iEntityStart >= 0 && |
| m_BlockBuffer.GetDataLength() > static_cast<size_t>(m_iEntityStart)) { |
| m_BlockBuffer.DeleteTextChars(m_BlockBuffer.GetDataLength() - |
| m_iEntityStart); |
| } |
| std::tie(m_pCurrentBlock, m_iIndexInBlock) = |
| m_BlockBuffer.GetAvailableBlock(); |
| m_iEntityStart = -1; |
| } else if (m_iEntityStart < 0 && character == L'&') { |
| m_iEntityStart = m_BlockBuffer.GetDataLength() - 1; |
| } |
| m_Start++; |
| } |
