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authorDan Sinclair <dsinclair@chromium.org>2017-07-24 10:52:57 -0400
committerChromium commit bot <commit-bot@chromium.org>2017-07-24 18:29:54 +0000
commit24ef63300f167ac63fb1f7fe8d3323ed6bce1695 (patch)
treef33867ff05da0f1ca16860721814da9400352599 /xfa/fxfa/cxfa_textparser.cpp
parentbeef5e45e5431c04c09d8ac61093aca34e29f90c (diff)
downloadpdfium-24ef63300f167ac63fb1f7fe8d3323ed6bce1695.tar.xz
Move xfa/fxfa/app to xfa/fxfachromium/3166
There currently exists a weird split where some files exist in xfa/fxfa and some files exist in xfa/fxfa/app. This CL removes the app/ folder and moves all files up to the parent directory. Change-Id: I00c87851a1ebc5a7a636eb9a17b58ba3f1708a84 Reviewed-on: https://pdfium-review.googlesource.com/8810 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
Diffstat (limited to 'xfa/fxfa/cxfa_textparser.cpp')
-rw-r--r--xfa/fxfa/cxfa_textparser.cpp625
1 files changed, 625 insertions, 0 deletions
diff --git a/xfa/fxfa/cxfa_textparser.cpp b/xfa/fxfa/cxfa_textparser.cpp
new file mode 100644
index 0000000000..2bc0096962
--- /dev/null
+++ b/xfa/fxfa/cxfa_textparser.cpp
@@ -0,0 +1,625 @@
+// 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/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/cxfa_csstagprovider.h"
+#include "xfa/fxfa/cxfa_ffapp.h"
+#include "xfa/fxfa/cxfa_ffdoc.h"
+#include "xfa/fxfa/cxfa_fontmgr.h"
+#include "xfa/fxfa/cxfa_textparsecontext.h"
+#include "xfa/fxfa/cxfa_textprovider.h"
+#include "xfa/fxfa/cxfa_texttabstopscontext.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;
+}