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authorDan Sinclair <dsinclair@chromium.org>2017-04-19 09:19:57 -0400
committerChromium commit bot <commit-bot@chromium.org>2017-04-19 13:33:07 +0000
commit0d86ecb08e1b2c204333b1f1f6b0b014e5b2971c (patch)
treef816429f8581c16a60773eb23385dc8e55729bac /core/fxcrt/xml/cfx_xmlsyntaxparser.cpp
parent3b71d26f092ebc86ca9177fbbe89d83caa67ae1b (diff)
downloadpdfium-0d86ecb08e1b2c204333b1f1f6b0b014e5b2971c.tar.xz
Move fde XML parser to core
This CL moves the XML parser from FDE into FXCRT and renames to CFX_ from CFDE_. Change-Id: I21a9590bf74daf5517df630d7e7a5de89da99ea4 Reviewed-on: https://pdfium-review.googlesource.com/4312 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
Diffstat (limited to 'core/fxcrt/xml/cfx_xmlsyntaxparser.cpp')
-rw-r--r--core/fxcrt/xml/cfx_xmlsyntaxparser.cpp698
1 files changed, 698 insertions, 0 deletions
diff --git a/core/fxcrt/xml/cfx_xmlsyntaxparser.cpp b/core/fxcrt/xml/cfx_xmlsyntaxparser.cpp
new file mode 100644
index 0000000000..e7bef71085
--- /dev/null
+++ b/core/fxcrt/xml/cfx_xmlsyntaxparser.cpp
@@ -0,0 +1,698 @@
+// 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 "core/fxcrt/fx_ext.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},
+};
+
+bool IsXMLNameChar(wchar_t ch, bool bFirstChar) {
+ int32_t iStart = 0;
+ int32_t iEnd = FX_ArraySize(g_XMLNameChars) - 1;
+ while (iStart <= iEnd) {
+ int32_t iMid = (iStart + iEnd) / 2;
+ if (ch < g_XMLNameChars[iMid].wStart) {
+ iEnd = iMid - 1;
+ } else if (ch > g_XMLNameChars[iMid].wEnd) {
+ iStart = iMid + 1;
+ } else {
+ return bFirstChar ? g_XMLNameChars[iMid].bStartChar : true;
+ }
+ }
+ return false;
+}
+
+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
+
+CFX_XMLSyntaxParser::CFX_XMLSyntaxParser(
+ const CFX_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<FX_STRSIZE>(m_pStream->GetLength()));
+ m_iCurrentPos = m_pStream->GetBOMLength();
+
+ FX_SAFE_STRSIZE 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;
+ }
+
+ int32_t iStreamLength = m_pStream->GetLength();
+ int32_t 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::Pos::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';') {
+ CFX_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 (w >= L'0' && w <= L'9') {
+ 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 (w < L'0' || w > L'9')
+ 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++;
+}