Split fde/css files into individual class files.

This CL splits the files in xfa/fde/css into class per file and renames any
needed files to match the class names.

Update some of the classes to use std::stack.

Change-Id: I4eca0fb3556d949a15a873bb0f0fd732f47e4fb1
Reviewed-on: https://pdfium-review.googlesource.com/2253
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>

1 files changed, 0 insertions, 442 deletions

diff --git a/xfa/fde/css/fde_csssyntax.cpp b/xfa/fde/css/fde_csssyntax.cpp
deleted file mode 100644
index ef3f8d89a2..0000000000
--- a/xfa/fde/css/fde_csssyntax.cpp
+++ /dev/null
@@ -1,442 +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/fde/css/fde_csssyntax.h"
-
-#include <algorithm>
-
-#include "xfa/fde/css/fde_cssdatatable.h"
-#include "xfa/fgas/crt/fgas_codepage.h"
-
-namespace {
-
-bool FDE_IsSelectorStart(FX_WCHAR wch) {
-  return wch == '.' || wch == '#' || wch == '*' || (wch >= 'a' && wch <= 'z') ||
-         (wch >= 'A' && wch <= 'Z');
-}
-
-}  // namespace
-
-CFDE_CSSSyntaxParser::CFDE_CSSSyntaxParser()
-    : m_iTextDatLen(0),
-      m_dwCheck((uint32_t)-1),
-      m_eMode(FDE_CSSSyntaxMode::RuleSet),
-      m_eStatus(FDE_CSSSyntaxStatus::None) {}
-
-CFDE_CSSSyntaxParser::~CFDE_CSSSyntaxParser() {
-  m_TextData.Reset();
-  m_TextPlane.Reset();
-}
-
-bool CFDE_CSSSyntaxParser::Init(const FX_WCHAR* pBuffer,
-                                int32_t iBufferSize,
-                                int32_t iTextDatSize,
-                                bool bOnlyDeclaration) {
-  ASSERT(pBuffer && iBufferSize > 0 && iTextDatSize > 0);
-  Reset(bOnlyDeclaration);
-  if (!m_TextData.EstimateSize(iTextDatSize))
-    return false;
-  return m_TextPlane.AttachBuffer(pBuffer, iBufferSize);
-}
-
-void CFDE_CSSSyntaxParser::Reset(bool bOnlyDeclaration) {
-  m_TextPlane.Reset();
-  m_TextData.Reset();
-  m_iTextDatLen = 0;
-  m_dwCheck = (uint32_t)-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_eMode == FDE_CSSSyntaxMode::PropertyValue &&
-          m_TextData.GetLength() > 0) {
-        SaveTextData();
-        m_eStatus = FDE_CSSSyntaxStatus::PropertyValue;
-        return m_eStatus;
-      }
-      m_eStatus = FDE_CSSSyntaxStatus::EOS;
-      return m_eStatus;
-    }
-    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;
-
-              m_eStatus = FDE_CSSSyntaxStatus::Error;
-              return m_eStatus;
-            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 {
-                m_eStatus = FDE_CSSSyntaxStatus::Error;
-                return m_eStatus;
-              }
-              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;
-              }
-              m_TextPlane.MoveNext();
-              m_ModeStack.push(FDE_CSSSyntaxMode::RuleSet);
-              SwitchMode(FDE_CSSSyntaxMode::PropertyName);
-              return FDE_CSSSyntaxStatus::DeclOpen;
-            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;
-
-              m_eStatus = FDE_CSSSyntaxStatus::Error;
-              return m_eStatus;
-            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 '{': {
-              if (m_ModeStack.empty() ||
-                  m_ModeStack.top() != FDE_CSSSyntaxMode::MediaRule) {
-                m_eStatus = FDE_CSSSyntaxStatus::Error;
-                return m_eStatus;
-              }
-
-              if (m_TextData.GetLength() > 0) {
-                SaveTextData();
-                return FDE_CSSSyntaxStatus::MediaType;
-              }
-              m_TextPlane.MoveNext();
-
-              // Replace the MediaRule with a RuleSet rule.
-              m_ModeStack.top() = FDE_CSSSyntaxMode::RuleSet;
-
-              SwitchMode(FDE_CSSSyntaxMode::RuleSet);
-              return FDE_CSSSyntaxStatus::DeclOpen;
-            }
-            case ';': {
-              if (m_ModeStack.empty() ||
-                  m_ModeStack.top() != FDE_CSSSyntaxMode::Import) {
-                m_eStatus = FDE_CSSSyntaxStatus::Error;
-                return m_eStatus;
-              }
-
-              if (m_TextData.GetLength() > 0) {
-                SaveTextData();
-                if (IsImportEnabled())
-                  return FDE_CSSSyntaxStatus::MediaType;
-              } else {
-                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: {
-          if (m_ModeStack.empty() ||
-              m_ModeStack.top() != FDE_CSSSyntaxMode::Import) {
-            m_eStatus = FDE_CSSSyntaxStatus::Error;
-            return m_eStatus;
-          }
-
-          if (wch <= ' ' || wch == ';') {
-            int32_t iURIStart, iURILength = m_TextData.GetLength();
-            if (iURILength > 0 && FDE_ParseCSSURI(m_TextData.GetBuffer(),
-                                                  &iURIStart, &iURILength)) {
-              m_TextData.Subtract(iURIStart, iURILength);
-              SwitchMode(FDE_CSSSyntaxMode::MediaType);
-              if (IsImportEnabled())
-                return FDE_CSSSyntaxStatus::URI;
-              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;
-              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)
-                return FDE_CSSSyntaxStatus::Charset;
-            }
-          } else {
-            AppendChar(wch);
-          }
-          break;
-        case FDE_CSSSyntaxMode::UnknownRule:
-          if (wch == ';')
-            SwitchMode(FDE_CSSSyntaxMode::RuleSet);
-          m_TextPlane.MoveNext();
-          break;
-        default:
-          ASSERT(false);
-          break;
-      }
-    }
-  }
-  return m_eStatus;
-}
-
-bool CFDE_CSSSyntaxParser::IsImportEnabled() const {
-  if ((m_dwCheck & FDE_CSSSYNTAXCHECK_AllowImport) == 0)
-    return false;
-  if (m_ModeStack.size() > 1)
-    return false;
-  return true;
-}
-
-bool CFDE_CSSSyntaxParser::AppendChar(FX_WCHAR wch) {
-  m_TextPlane.MoveNext();
-  if (m_TextData.GetLength() > 0 || wch > ' ') {
-    m_TextData.AppendChar(wch);
-    return true;
-  }
-  return false;
-}
-
-int32_t CFDE_CSSSyntaxParser::SaveTextData() {
-  m_iTextDatLen = m_TextData.TrimEnd();
-  m_TextData.Clear();
-  return m_iTextDatLen;
-}
-
-void CFDE_CSSSyntaxParser::SwitchMode(FDE_CSSSyntaxMode eMode) {
-  m_eMode = eMode;
-  SaveTextData();
-}
-
-int32_t CFDE_CSSSyntaxParser::SwitchToComment() {
-  int32_t iLength = m_TextData.GetLength();
-  m_ModeStack.push(m_eMode);
-  SwitchMode(FDE_CSSSyntaxMode::Comment);
-  return iLength;
-}
-
-bool CFDE_CSSSyntaxParser::RestoreMode() {
-  if (m_ModeStack.empty())
-    return false;
-
-  SwitchMode(m_ModeStack.top());
-  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(nullptr),
-      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 = nullptr;
-  }
-  m_iDatPos = m_iDatLen = m_iBufLen;
-}
-
-bool CFDE_CSSTextBuf::AttachBuffer(const FX_WCHAR* pBuffer, int32_t iBufLen) {
-  Reset();
-  m_pBuffer = const_cast<FX_WCHAR*>(pBuffer);
-  m_iDatLen = m_iBufLen = iBufLen;
-  return m_bExtBuf = true;
-}
-
-bool CFDE_CSSTextBuf::EstimateSize(int32_t iAllocSize) {
-  ASSERT(iAllocSize > 0);
-  Clear();
-  m_bExtBuf = false;
-  return ExpandBuf(iAllocSize);
-}
-
-int32_t CFDE_CSSTextBuf::LoadFromStream(
-    const CFX_RetainPtr<IFGAS_Stream>& pTxtStream,
-    int32_t iStreamOffset,
-    int32_t iMaxChars,
-    bool& bEOS) {
-  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;
-}
-
-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) {
-  ASSERT(iStart >= 0 && iLength >= 0);
-
-  iLength = std::max(std::min(iLength, m_iDatLen - iStart), 0);
-  FXSYS_memmove(m_pBuffer, m_pBuffer + iStart, iLength * sizeof(FX_WCHAR));
-  m_iDatLen = iLength;
-}