summaryrefslogtreecommitdiff
path: root/xfa/fde/xml/cfde_xmlparser.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'xfa/fde/xml/cfde_xmlparser.cpp')
-rw-r--r--xfa/fde/xml/cfde_xmlparser.cpp173
1 files changed, 173 insertions, 0 deletions
diff --git a/xfa/fde/xml/cfde_xmlparser.cpp b/xfa/fde/xml/cfde_xmlparser.cpp
new file mode 100644
index 0000000000..db85021693
--- /dev/null
+++ b/xfa/fde/xml/cfde_xmlparser.cpp
@@ -0,0 +1,173 @@
+// Copyright 2016 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/fde/xml/cfde_xmlparser.h"
+
+#include "core/fxcrt/fx_basic.h"
+#include "third_party/base/ptr_util.h"
+#include "xfa/fde/xml/cfde_xmlchardata.h"
+#include "xfa/fde/xml/cfde_xmlelement.h"
+#include "xfa/fde/xml/cfde_xmlinstruction.h"
+#include "xfa/fde/xml/cfde_xmlnode.h"
+#include "xfa/fde/xml/cfde_xmltext.h"
+
+CFDE_XMLParser::CFDE_XMLParser(CFDE_XMLNode* pParent,
+ const CFX_RetainPtr<IFGAS_Stream>& pStream)
+ : m_nElementStart(0),
+ m_dwCheckStatus(0),
+ m_dwCurrentCheckStatus(0),
+ m_pStream(pStream),
+ m_pParser(pdfium::MakeUnique<CFDE_XMLSyntaxParser>()),
+ m_pParent(pParent),
+ m_pChild(nullptr),
+ m_syntaxParserResult(FDE_XmlSyntaxResult::None) {
+ ASSERT(m_pParent && m_pStream);
+ m_NodeStack.push(m_pParent);
+ m_pParser->Init(m_pStream, 32 * 1024, 1024 * 1024);
+}
+
+CFDE_XMLParser::~CFDE_XMLParser() {}
+
+int32_t CFDE_XMLParser::DoParser(IFX_Pause* pPause) {
+ if (m_syntaxParserResult == FDE_XmlSyntaxResult::Error)
+ return -1;
+ if (m_syntaxParserResult == FDE_XmlSyntaxResult::EndOfString)
+ return 100;
+
+ int32_t iCount = 0;
+ while (true) {
+ m_syntaxParserResult = m_pParser->DoSyntaxParse();
+ switch (m_syntaxParserResult) {
+ case FDE_XmlSyntaxResult::InstructionOpen:
+ break;
+ case FDE_XmlSyntaxResult::InstructionClose:
+ if (m_pChild) {
+ if (m_pChild->GetType() != FDE_XMLNODE_Instruction) {
+ m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
+ break;
+ }
+ }
+ m_pChild = m_pParent;
+ break;
+ case FDE_XmlSyntaxResult::ElementOpen:
+ if (m_dwCheckStatus != 0x03 && m_NodeStack.size() == 2)
+ m_nElementStart = m_pParser->GetCurrentPos() - 1;
+ break;
+ case FDE_XmlSyntaxResult::ElementBreak:
+ break;
+ case FDE_XmlSyntaxResult::ElementClose:
+ if (m_pChild->GetType() != FDE_XMLNODE_Element) {
+ m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
+ break;
+ }
+ m_pParser->GetTagName(m_ws1);
+ static_cast<CFDE_XMLElement*>(m_pChild)->GetTagName(m_ws2);
+ if (m_ws1.GetLength() > 0 && m_ws1 != m_ws2) {
+ m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
+ break;
+ }
+ if (!m_NodeStack.empty())
+ m_NodeStack.pop();
+ if (m_NodeStack.empty()) {
+ m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
+ break;
+ } else if (m_dwCurrentCheckStatus != 0 && m_NodeStack.size() == 2) {
+ m_nSize[m_dwCurrentCheckStatus - 1] =
+ m_pParser->GetCurrentBinaryPos() -
+ m_nStart[m_dwCurrentCheckStatus - 1];
+ m_dwCurrentCheckStatus = 0;
+ }
+ m_pParent = m_NodeStack.top();
+ m_pChild = m_pParent;
+ iCount++;
+ break;
+ case FDE_XmlSyntaxResult::TargetName:
+ m_pParser->GetTargetName(m_ws1);
+ if (m_ws1 == L"originalXFAVersion" || m_ws1 == L"acrobat") {
+ m_pChild = new CFDE_XMLInstruction(m_ws1);
+ m_pParent->InsertChildNode(m_pChild);
+ } else {
+ m_pChild = nullptr;
+ }
+ m_ws1.clear();
+ break;
+ case FDE_XmlSyntaxResult::TagName:
+ m_pParser->GetTagName(m_ws1);
+ m_pChild = new CFDE_XMLElement(m_ws1);
+ m_pParent->InsertChildNode(m_pChild);
+ m_NodeStack.push(m_pChild);
+ m_pParent = m_pChild;
+
+ if (m_dwCheckStatus != 0x03 && m_NodeStack.size() == 3) {
+ CFX_WideString wsTag;
+ static_cast<CFDE_XMLElement*>(m_pChild)->GetLocalTagName(wsTag);
+ if (wsTag == L"template") {
+ m_dwCheckStatus |= 0x01;
+ m_dwCurrentCheckStatus = 0x01;
+ m_nStart[0] = m_pParser->GetCurrentBinaryPos() -
+ (m_pParser->GetCurrentPos() - m_nElementStart);
+ } else if (wsTag == L"datasets") {
+ m_dwCheckStatus |= 0x02;
+ m_dwCurrentCheckStatus = 0x02;
+ m_nStart[1] = m_pParser->GetCurrentBinaryPos() -
+ (m_pParser->GetCurrentPos() - m_nElementStart);
+ }
+ }
+ break;
+ case FDE_XmlSyntaxResult::AttriName:
+ m_pParser->GetAttributeName(m_ws1);
+ break;
+ case FDE_XmlSyntaxResult::AttriValue:
+ if (m_pChild) {
+ m_pParser->GetAttributeName(m_ws2);
+ if (m_pChild->GetType() == FDE_XMLNODE_Element) {
+ static_cast<CFDE_XMLElement*>(m_pChild)->SetString(m_ws1, m_ws2);
+ }
+ }
+ m_ws1.clear();
+ break;
+ case FDE_XmlSyntaxResult::Text:
+ m_pParser->GetTextData(m_ws1);
+ m_pChild = new CFDE_XMLText(m_ws1);
+ m_pParent->InsertChildNode(m_pChild);
+ m_pChild = m_pParent;
+ break;
+ case FDE_XmlSyntaxResult::CData:
+ m_pParser->GetTextData(m_ws1);
+ m_pChild = new CFDE_XMLCharData(m_ws1);
+ m_pParent->InsertChildNode(m_pChild);
+ m_pChild = m_pParent;
+ break;
+ case FDE_XmlSyntaxResult::TargetData:
+ if (m_pChild) {
+ if (m_pChild->GetType() != FDE_XMLNODE_Instruction) {
+ m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
+ break;
+ }
+ if (!m_ws1.IsEmpty()) {
+ static_cast<CFDE_XMLInstruction*>(m_pChild)->AppendData(m_ws1);
+ }
+ m_pParser->GetTargetData(m_ws1);
+ static_cast<CFDE_XMLInstruction*>(m_pChild)->AppendData(m_ws1);
+ }
+ m_ws1.clear();
+ break;
+ default:
+ break;
+ }
+ if (m_syntaxParserResult == FDE_XmlSyntaxResult::Error ||
+ m_syntaxParserResult == FDE_XmlSyntaxResult::EndOfString) {
+ break;
+ }
+ if (pPause && iCount > 500 && pPause->NeedToPauseNow()) {
+ break;
+ }
+ }
+ return (m_syntaxParserResult == FDE_XmlSyntaxResult::Error ||
+ m_NodeStack.size() != 1)
+ ? -1
+ : m_pParser->GetStatus();
+}