diff options
Diffstat (limited to 'xfa/fxfa/app/cxfa_textparser.cpp')
| -rw-r--r-- | xfa/fxfa/app/cxfa_textparser.cpp | 625 |
1 files changed, 0 insertions, 625 deletions
diff --git a/xfa/fxfa/app/cxfa_textparser.cpp b/xfa/fxfa/app/cxfa_textparser.cpp deleted file mode 100644 index 8bdb0a8372..0000000000 --- a/xfa/fxfa/app/cxfa_textparser.cpp +++ /dev/null @@ -1,625 +0,0 @@ -// 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 "xfa/fxfa/app/cxfa_textparser.h" - -#include <algorithm> -#include <utility> -#include <vector> - -#include "core/fxcrt/fx_codepage.h" -#include "core/fxcrt/xml/cfx_xmlelement.h" -#include "core/fxcrt/xml/cfx_xmlnode.h" -#include "third_party/base/ptr_util.h" -#include "xfa/fde/css/cfde_csscomputedstyle.h" -#include "xfa/fde/css/cfde_cssstyleselector.h" -#include "xfa/fde/css/cfde_cssstylesheet.h" -#include "xfa/fde/css/fde_css.h" -#include "xfa/fgas/font/cfgas_fontmgr.h" -#include "xfa/fxfa/app/cxfa_csstagprovider.h" -#include "xfa/fxfa/app/cxfa_textparsecontext.h" -#include "xfa/fxfa/app/cxfa_textprovider.h" -#include "xfa/fxfa/app/cxfa_texttabstopscontext.h" -#include "xfa/fxfa/cxfa_ffapp.h" -#include "xfa/fxfa/cxfa_ffdoc.h" -#include "xfa/fxfa/cxfa_fontmgr.h" -#include "xfa/fxfa/parser/cxfa_measurement.h" - -namespace { - -enum class TabStopStatus { - Error, - EOS, - None, - Alignment, - StartLeader, - Leader, - Location, -}; - -} // namespace - -CXFA_TextParser::CXFA_TextParser() - : m_bParsed(false), m_cssInitialized(false) {} - -CXFA_TextParser::~CXFA_TextParser() {} - -void CXFA_TextParser::Reset() { - m_mapXMLNodeToParseContext.clear(); - m_bParsed = false; -} - -void CXFA_TextParser::InitCSSData(CXFA_TextProvider* pTextProvider) { - if (!pTextProvider) - return; - - if (!m_pSelector) { - CXFA_FFDoc* pDoc = pTextProvider->GetDocNode(); - CFGAS_FontMgr* pFontMgr = pDoc->GetApp()->GetFDEFontMgr(); - ASSERT(pFontMgr); - m_pSelector = pdfium::MakeUnique<CFDE_CSSStyleSelector>(pFontMgr); - CXFA_Font font = pTextProvider->GetFontNode(); - m_pSelector->SetDefFontSize(font ? font.GetFontSize() : 10.0f); - } - - if (m_cssInitialized) - return; - - m_cssInitialized = true; - auto uaSheet = LoadDefaultSheetStyle(); - m_pSelector->SetUAStyleSheet(std::move(uaSheet)); - m_pSelector->UpdateStyleIndex(); -} - -std::unique_ptr<CFDE_CSSStyleSheet> CXFA_TextParser::LoadDefaultSheetStyle() { - static const wchar_t s_pStyle[] = - L"html,body,ol,p,ul{display:block}" - L"li{display:list-item}" - L"ol,ul{padding-left:33px;margin:1.12em 0}" - L"ol{list-style-type:decimal}" - L"a{color:#0000ff;text-decoration:underline}" - L"b{font-weight:bolder}" - L"i{font-style:italic}" - L"sup{vertical-align:+15em;font-size:.66em}" - L"sub{vertical-align:-15em;font-size:.66em}"; - - auto sheet = pdfium::MakeUnique<CFDE_CSSStyleSheet>(); - return sheet->LoadBuffer(s_pStyle, FXSYS_wcslen(s_pStyle)) ? std::move(sheet) - : nullptr; -} - -CFX_RetainPtr<CFDE_CSSComputedStyle> CXFA_TextParser::CreateRootStyle( - CXFA_TextProvider* pTextProvider) { - CXFA_Font font = pTextProvider->GetFontNode(); - CXFA_Para para = pTextProvider->GetParaNode(); - auto pStyle = m_pSelector->CreateComputedStyle(nullptr); - float fLineHeight = 0; - float fFontSize = 10; - - if (para) { - fLineHeight = para.GetLineHeight(); - FDE_CSSLength indent; - indent.Set(FDE_CSSLengthUnit::Point, para.GetTextIndent()); - pStyle->SetTextIndent(indent); - FDE_CSSTextAlign hAlign = FDE_CSSTextAlign::Left; - switch (para.GetHorizontalAlign()) { - case XFA_ATTRIBUTEENUM_Center: - hAlign = FDE_CSSTextAlign::Center; - break; - case XFA_ATTRIBUTEENUM_Right: - hAlign = FDE_CSSTextAlign::Right; - break; - case XFA_ATTRIBUTEENUM_Justify: - hAlign = FDE_CSSTextAlign::Justify; - break; - case XFA_ATTRIBUTEENUM_JustifyAll: - hAlign = FDE_CSSTextAlign::JustifyAll; - break; - } - pStyle->SetTextAlign(hAlign); - FDE_CSSRect rtMarginWidth; - rtMarginWidth.left.Set(FDE_CSSLengthUnit::Point, para.GetMarginLeft()); - rtMarginWidth.top.Set(FDE_CSSLengthUnit::Point, para.GetSpaceAbove()); - rtMarginWidth.right.Set(FDE_CSSLengthUnit::Point, para.GetMarginRight()); - rtMarginWidth.bottom.Set(FDE_CSSLengthUnit::Point, para.GetSpaceBelow()); - pStyle->SetMarginWidth(rtMarginWidth); - } - - if (font) { - pStyle->SetColor(font.GetColor()); - pStyle->SetFontStyle(font.IsItalic() ? FDE_CSSFontStyle::Italic - : FDE_CSSFontStyle::Normal); - pStyle->SetFontWeight(font.IsBold() ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL); - pStyle->SetNumberVerticalAlign(-font.GetBaselineShift()); - fFontSize = font.GetFontSize(); - FDE_CSSLength letterSpacing; - letterSpacing.Set(FDE_CSSLengthUnit::Point, font.GetLetterSpacing()); - pStyle->SetLetterSpacing(letterSpacing); - uint32_t dwDecoration = 0; - if (font.GetLineThrough() > 0) - dwDecoration |= FDE_CSSTEXTDECORATION_LineThrough; - if (font.GetUnderline() > 1) - dwDecoration |= FDE_CSSTEXTDECORATION_Double; - else if (font.GetUnderline() > 0) - dwDecoration |= FDE_CSSTEXTDECORATION_Underline; - - pStyle->SetTextDecoration(dwDecoration); - } - pStyle->SetLineHeight(fLineHeight); - pStyle->SetFontSize(fFontSize); - return pStyle; -} - -CFX_RetainPtr<CFDE_CSSComputedStyle> CXFA_TextParser::CreateStyle( - CFDE_CSSComputedStyle* pParentStyle) { - auto pNewStyle = m_pSelector->CreateComputedStyle(pParentStyle); - ASSERT(pNewStyle); - if (!pParentStyle) - return pNewStyle; - - uint32_t dwDecoration = pParentStyle->GetTextDecoration(); - float fBaseLine = 0; - if (pParentStyle->GetVerticalAlign() == FDE_CSSVerticalAlign::Number) - fBaseLine = pParentStyle->GetNumberVerticalAlign(); - - pNewStyle->SetTextDecoration(dwDecoration); - pNewStyle->SetNumberVerticalAlign(fBaseLine); - - const FDE_CSSRect* pRect = pParentStyle->GetMarginWidth(); - if (pRect) - pNewStyle->SetMarginWidth(*pRect); - return pNewStyle; -} - -CFX_RetainPtr<CFDE_CSSComputedStyle> CXFA_TextParser::ComputeStyle( - CFX_XMLNode* pXMLNode, - CFDE_CSSComputedStyle* pParentStyle) { - auto it = m_mapXMLNodeToParseContext.find(pXMLNode); - if (it == m_mapXMLNodeToParseContext.end()) - return nullptr; - - CXFA_TextParseContext* pContext = it->second.get(); - if (!pContext) - return nullptr; - - pContext->m_pParentStyle.Reset(pParentStyle); - - auto tagProvider = ParseTagInfo(pXMLNode); - if (tagProvider->m_bContent) - return nullptr; - - auto pStyle = CreateStyle(pParentStyle); - m_pSelector->ComputeStyle(pContext->GetDecls(), - tagProvider->GetAttribute(L"style"), - tagProvider->GetAttribute(L"align"), pStyle.Get()); - return pStyle; -} - -void CXFA_TextParser::DoParse(CFX_XMLNode* pXMLContainer, - CXFA_TextProvider* pTextProvider) { - if (!pXMLContainer || !pTextProvider || m_bParsed) - return; - - m_bParsed = true; - InitCSSData(pTextProvider); - auto pRootStyle = CreateRootStyle(pTextProvider); - ParseRichText(pXMLContainer, pRootStyle.Get()); -} - -void CXFA_TextParser::ParseRichText(CFX_XMLNode* pXMLNode, - CFDE_CSSComputedStyle* pParentStyle) { - if (!pXMLNode) - return; - - auto tagProvider = ParseTagInfo(pXMLNode); - if (!tagProvider->m_bTagAvailable) - return; - - CFX_RetainPtr<CFDE_CSSComputedStyle> pNewStyle; - if ((tagProvider->GetTagName() != L"body") || - (tagProvider->GetTagName() != L"html")) { - auto pTextContext = pdfium::MakeUnique<CXFA_TextParseContext>(); - FDE_CSSDisplay eDisplay = FDE_CSSDisplay::Inline; - if (!tagProvider->m_bContent) { - auto declArray = - m_pSelector->MatchDeclarations(tagProvider->GetTagName()); - pNewStyle = CreateStyle(pParentStyle); - m_pSelector->ComputeStyle(declArray, tagProvider->GetAttribute(L"style"), - tagProvider->GetAttribute(L"align"), - pNewStyle.Get()); - - if (!declArray.empty()) - pTextContext->SetDecls(std::move(declArray)); - - eDisplay = pNewStyle->GetDisplay(); - } - pTextContext->SetDisplay(eDisplay); - m_mapXMLNodeToParseContext[pXMLNode] = std::move(pTextContext); - } - - for (CFX_XMLNode* pXMLChild = pXMLNode->GetNodeItem(CFX_XMLNode::FirstChild); - pXMLChild; - pXMLChild = pXMLChild->GetNodeItem(CFX_XMLNode::NextSibling)) { - ParseRichText(pXMLChild, pNewStyle.Get()); - } -} - -bool CXFA_TextParser::TagValidate(const CFX_WideString& wsName) const { - static const uint32_t s_XFATagName[] = { - 0x61, // a - 0x62, // b - 0x69, // i - 0x70, // p - 0x0001f714, // br - 0x00022a55, // li - 0x000239bb, // ol - 0x00025881, // ul - 0x0bd37faa, // sub - 0x0bd37fb8, // sup - 0xa73e3af2, // span - 0xb182eaae, // body - 0xdb8ac455, // html - }; - static const int32_t s_iCount = FX_ArraySize(s_XFATagName); - - return std::binary_search(s_XFATagName, s_XFATagName + s_iCount, - FX_HashCode_GetW(wsName.AsStringC(), true)); -} - -std::unique_ptr<CXFA_CSSTagProvider> CXFA_TextParser::ParseTagInfo( - CFX_XMLNode* pXMLNode) { - auto tagProvider = pdfium::MakeUnique<CXFA_CSSTagProvider>(); - - CFX_WideString wsName; - if (pXMLNode->GetType() == FX_XMLNODE_Element) { - CFX_XMLElement* pXMLElement = static_cast<CFX_XMLElement*>(pXMLNode); - wsName = pXMLElement->GetLocalTagName(); - tagProvider->SetTagName(wsName); - tagProvider->m_bTagAvailable = TagValidate(wsName); - - CFX_WideString wsValue = pXMLElement->GetString(L"style"); - if (!wsValue.IsEmpty()) - tagProvider->SetAttribute(L"style", wsValue); - } else if (pXMLNode->GetType() == FX_XMLNODE_Text) { - tagProvider->m_bTagAvailable = true; - tagProvider->m_bContent = true; - } - return tagProvider; -} - -int32_t CXFA_TextParser::GetVAlign(CXFA_TextProvider* pTextProvider) const { - CXFA_Para para = pTextProvider->GetParaNode(); - return para ? para.GetVerticalAlign() : XFA_ATTRIBUTEENUM_Top; -} - -float CXFA_TextParser::GetTabInterval(CFDE_CSSComputedStyle* pStyle) const { - CFX_WideString wsValue; - if (pStyle && pStyle->GetCustomStyle(L"tab-interval", wsValue)) - return CXFA_Measurement(wsValue.AsStringC()).ToUnit(XFA_UNIT_Pt); - return 36; -} - -int32_t CXFA_TextParser::CountTabs(CFDE_CSSComputedStyle* pStyle) const { - CFX_WideString wsValue; - if (pStyle && pStyle->GetCustomStyle(L"xfa-tab-count", wsValue)) - return wsValue.GetInteger(); - return 0; -} - -bool CXFA_TextParser::IsSpaceRun(CFDE_CSSComputedStyle* pStyle) const { - CFX_WideString wsValue; - if (pStyle && pStyle->GetCustomStyle(L"xfa-spacerun", wsValue)) { - wsValue.MakeLower(); - return wsValue == L"yes"; - } - return false; -} - -CFX_RetainPtr<CFGAS_GEFont> CXFA_TextParser::GetFont( - CXFA_TextProvider* pTextProvider, - CFDE_CSSComputedStyle* pStyle) const { - CFX_WideStringC wsFamily = L"Courier"; - uint32_t dwStyle = 0; - CXFA_Font font = pTextProvider->GetFontNode(); - if (font) { - font.GetTypeface(wsFamily); - if (font.IsBold()) - dwStyle |= FX_FONTSTYLE_Bold; - if (font.IsItalic()) - dwStyle |= FX_FONTSTYLE_Italic; - } - - if (pStyle) { - int32_t iCount = pStyle->CountFontFamilies(); - if (iCount > 0) - wsFamily = pStyle->GetFontFamily(iCount - 1).AsStringC(); - - dwStyle = 0; - if (pStyle->GetFontWeight() > FXFONT_FW_NORMAL) - dwStyle |= FX_FONTSTYLE_Bold; - if (pStyle->GetFontStyle() == FDE_CSSFontStyle::Italic) - dwStyle |= FX_FONTSTYLE_Italic; - } - - CXFA_FFDoc* pDoc = pTextProvider->GetDocNode(); - CXFA_FontMgr* pFontMgr = pDoc->GetApp()->GetXFAFontMgr(); - return pFontMgr->GetFont(pDoc, wsFamily, dwStyle); -} - -float CXFA_TextParser::GetFontSize(CXFA_TextProvider* pTextProvider, - CFDE_CSSComputedStyle* pStyle) const { - if (pStyle) - return pStyle->GetFontSize(); - - CXFA_Font font = pTextProvider->GetFontNode(); - if (font) - return font.GetFontSize(); - return 10; -} - -int32_t CXFA_TextParser::GetHorScale(CXFA_TextProvider* pTextProvider, - CFDE_CSSComputedStyle* pStyle, - CFX_XMLNode* pXMLNode) const { - if (pStyle) { - CFX_WideString wsValue; - if (pStyle->GetCustomStyle(L"xfa-font-horizontal-scale", wsValue)) - return wsValue.GetInteger(); - - while (pXMLNode) { - auto it = m_mapXMLNodeToParseContext.find(pXMLNode); - if (it != m_mapXMLNodeToParseContext.end()) { - CXFA_TextParseContext* pContext = it->second.get(); - if (pContext && pContext->m_pParentStyle && - pContext->m_pParentStyle->GetCustomStyle( - L"xfa-font-horizontal-scale", wsValue)) { - return wsValue.GetInteger(); - } - } - pXMLNode = pXMLNode->GetNodeItem(CFX_XMLNode::Parent); - } - } - - if (CXFA_Font font = pTextProvider->GetFontNode()) - return static_cast<int32_t>(font.GetHorizontalScale()); - return 100; -} - -int32_t CXFA_TextParser::GetVerScale(CXFA_TextProvider* pTextProvider, - CFDE_CSSComputedStyle* pStyle) const { - if (pStyle) { - CFX_WideString wsValue; - if (pStyle->GetCustomStyle(L"xfa-font-vertical-scale", wsValue)) - return wsValue.GetInteger(); - } - - if (CXFA_Font font = pTextProvider->GetFontNode()) - return (int32_t)font.GetVerticalScale(); - return 100; -} - -void CXFA_TextParser::GetUnderline(CXFA_TextProvider* pTextProvider, - CFDE_CSSComputedStyle* pStyle, - int32_t& iUnderline, - int32_t& iPeriod) const { - iUnderline = 0; - iPeriod = XFA_ATTRIBUTEENUM_All; - if (!pStyle) { - CXFA_Font font = pTextProvider->GetFontNode(); - if (font) { - iUnderline = font.GetUnderline(); - iPeriod = font.GetUnderlinePeriod(); - } - return; - } - - uint32_t dwDecoration = pStyle->GetTextDecoration(); - if (dwDecoration & FDE_CSSTEXTDECORATION_Double) - iUnderline = 2; - else if (dwDecoration & FDE_CSSTEXTDECORATION_Underline) - iUnderline = 1; - - CFX_WideString wsValue; - if (pStyle->GetCustomStyle(L"underlinePeriod", wsValue)) { - if (wsValue == L"word") - iPeriod = XFA_ATTRIBUTEENUM_Word; - } else if (CXFA_Font font = pTextProvider->GetFontNode()) { - iPeriod = font.GetUnderlinePeriod(); - } -} - -void CXFA_TextParser::GetLinethrough(CXFA_TextProvider* pTextProvider, - CFDE_CSSComputedStyle* pStyle, - int32_t& iLinethrough) const { - if (pStyle) { - uint32_t dwDecoration = pStyle->GetTextDecoration(); - iLinethrough = (dwDecoration & FDE_CSSTEXTDECORATION_LineThrough) ? 1 : 0; - return; - } - - CXFA_Font font = pTextProvider->GetFontNode(); - if (font) - iLinethrough = font.GetLineThrough(); -} - -FX_ARGB CXFA_TextParser::GetColor(CXFA_TextProvider* pTextProvider, - CFDE_CSSComputedStyle* pStyle) const { - if (pStyle) - return pStyle->GetColor(); - if (CXFA_Font font = pTextProvider->GetFontNode()) - return font.GetColor(); - - return 0xFF000000; -} - -float CXFA_TextParser::GetBaseline(CXFA_TextProvider* pTextProvider, - CFDE_CSSComputedStyle* pStyle) const { - if (pStyle) { - if (pStyle->GetVerticalAlign() == FDE_CSSVerticalAlign::Number) - return pStyle->GetNumberVerticalAlign(); - } else if (CXFA_Font font = pTextProvider->GetFontNode()) { - return font.GetBaselineShift(); - } - return 0; -} - -float CXFA_TextParser::GetLineHeight(CXFA_TextProvider* pTextProvider, - CFDE_CSSComputedStyle* pStyle, - bool bFirst, - float fVerScale) const { - float fLineHeight = 0; - if (pStyle) - fLineHeight = pStyle->GetLineHeight(); - else if (CXFA_Para para = pTextProvider->GetParaNode()) - fLineHeight = para.GetLineHeight(); - - if (bFirst) { - float fFontSize = GetFontSize(pTextProvider, pStyle); - if (fLineHeight < 0.1f) - fLineHeight = fFontSize; - else - fLineHeight = std::min(fLineHeight, fFontSize); - } else if (fLineHeight < 0.1f) { - fLineHeight = GetFontSize(pTextProvider, pStyle) * 1.2f; - } - fLineHeight *= fVerScale; - return fLineHeight; -} - -bool CXFA_TextParser::GetEmbbedObj(CXFA_TextProvider* pTextProvider, - CFX_XMLNode* pXMLNode, - CFX_WideString& wsValue) { - wsValue.clear(); - if (!pXMLNode) - return false; - - bool bRet = false; - if (pXMLNode->GetType() == FX_XMLNODE_Element) { - CFX_XMLElement* pElement = static_cast<CFX_XMLElement*>(pXMLNode); - CFX_WideString wsAttr = pElement->GetString(L"xfa:embed"); - if (wsAttr.IsEmpty()) - return false; - if (wsAttr.GetAt(0) == L'#') - wsAttr.Delete(0); - - CFX_WideString ws = pElement->GetString(L"xfa:embedType"); - if (ws.IsEmpty()) - ws = L"som"; - else - ws.MakeLower(); - - bool bURI = (ws == L"uri"); - if (!bURI && ws != L"som") - return false; - - ws = pElement->GetString(L"xfa:embedMode"); - if (ws.IsEmpty()) - ws = L"formatted"; - else - ws.MakeLower(); - - bool bRaw = (ws == L"raw"); - if (!bRaw && ws != L"formatted") - return false; - - bRet = pTextProvider->GetEmbbedObj(bURI, bRaw, wsAttr, wsValue); - } - return bRet; -} - -CXFA_TextParseContext* CXFA_TextParser::GetParseContextFromMap( - CFX_XMLNode* pXMLNode) { - auto it = m_mapXMLNodeToParseContext.find(pXMLNode); - return it != m_mapXMLNodeToParseContext.end() ? it->second.get() : nullptr; -} - -bool CXFA_TextParser::GetTabstops(CFDE_CSSComputedStyle* pStyle, - CXFA_TextTabstopsContext* pTabstopContext) { - if (!pStyle || !pTabstopContext) - return false; - - CFX_WideString wsValue; - if (!pStyle->GetCustomStyle(L"xfa-tab-stops", wsValue) && - !pStyle->GetCustomStyle(L"tab-stops", wsValue)) { - return false; - } - - int32_t iLength = wsValue.GetLength(); - const wchar_t* pTabStops = wsValue.c_str(); - int32_t iCur = 0; - int32_t iLast = 0; - CFX_WideString wsAlign; - TabStopStatus eStatus = TabStopStatus::None; - wchar_t ch; - while (iCur < iLength) { - ch = pTabStops[iCur]; - switch (eStatus) { - case TabStopStatus::None: - if (ch <= ' ') { - iCur++; - } else { - eStatus = TabStopStatus::Alignment; - iLast = iCur; - } - break; - case TabStopStatus::Alignment: - if (ch == ' ') { - wsAlign = CFX_WideStringC(pTabStops + iLast, iCur - iLast); - eStatus = TabStopStatus::StartLeader; - iCur++; - while (iCur < iLength && pTabStops[iCur] <= ' ') - iCur++; - iLast = iCur; - } else { - iCur++; - } - break; - case TabStopStatus::StartLeader: - if (ch != 'l') { - eStatus = TabStopStatus::Location; - } else { - int32_t iCount = 0; - while (iCur < iLength) { - ch = pTabStops[iCur]; - iCur++; - if (ch == '(') { - iCount++; - } else if (ch == ')') { - iCount--; - if (iCount == 0) - break; - } - } - while (iCur < iLength && pTabStops[iCur] <= ' ') - iCur++; - - iLast = iCur; - eStatus = TabStopStatus::Location; - } - break; - case TabStopStatus::Location: - if (ch == ' ') { - uint32_t dwHashCode = FX_HashCode_GetW(wsAlign.AsStringC(), true); - CXFA_Measurement ms(CFX_WideStringC(pTabStops + iLast, iCur - iLast)); - float fPos = ms.ToUnit(XFA_UNIT_Pt); - pTabstopContext->Append(dwHashCode, fPos); - wsAlign.clear(); - eStatus = TabStopStatus::None; - } - iCur++; - break; - default: - break; - } - } - - if (!wsAlign.IsEmpty()) { - uint32_t dwHashCode = FX_HashCode_GetW(wsAlign.AsStringC(), true); - CXFA_Measurement ms(CFX_WideStringC(pTabStops + iLast, iCur - iLast)); - float fPos = ms.ToUnit(XFA_UNIT_Pt); - pTabstopContext->Append(dwHashCode, fPos); - } - return true; -} |