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Unified Diff: core/fpdftext/fpdf_text_int.cpp

Issue 2286723003: Split fpdf_text_int into classes (Closed)
Patch Set: Fix bots Created 4 years, 4 months ago
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Index: core/fpdftext/fpdf_text_int.cpp
diff --git a/core/fpdftext/fpdf_text_int.cpp b/core/fpdftext/fpdf_text_int.cpp
deleted file mode 100644
index fbd9c9c8c1cfbbc40da724d7632f8145ffc5a350..0000000000000000000000000000000000000000
--- a/core/fpdftext/fpdf_text_int.cpp
+++ /dev/null
@@ -1,2149 +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 <algorithm>
-#include <cctype>
-#include <cwctype>
-#include <memory>
-#include <utility>
-#include <vector>
-
-#include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
-#include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
-#include "core/fpdfapi/fpdf_page/include/cpdf_formobject.h"
-#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
-#include "core/fpdfapi/fpdf_page/include/cpdf_pageobject.h"
-#include "core/fpdfapi/fpdf_page/include/cpdf_textobject.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_string.h"
-#include "core/fpdftext/include/cpdf_linkextract.h"
-#include "core/fpdftext/include/cpdf_textpage.h"
-#include "core/fpdftext/include/cpdf_textpagefind.h"
-#include "core/fpdftext/unicodenormalizationdata.h"
-#include "core/fxcrt/fx_bidi.h"
-#include "core/fxcrt/include/fx_ext.h"
-#include "core/fxcrt/include/fx_ucd.h"
-#include "third_party/base/stl_util.h"
-
-#define FPDFTEXT_MATCHCASE 0x00000001
-#define FPDFTEXT_MATCHWHOLEWORD 0x00000002
-#define FPDFTEXT_CONSECUTIVE 0x00000004
-
-#define FPDFTEXT_CHAR_ERROR -1
-#define FPDFTEXT_CHAR_NORMAL 0
-#define FPDFTEXT_CHAR_GENERATED 1
-#define FPDFTEXT_CHAR_UNUNICODE 2
-#define FPDFTEXT_CHAR_HYPHEN 3
-#define FPDFTEXT_CHAR_PIECE 4
-
-#define TEXT_SPACE_CHAR L' '
-#define TEXT_LINEFEED_CHAR L'\n'
-#define TEXT_RETURN_CHAR L'\r'
-#define TEXT_EMPTY L""
-#define TEXT_SPACE L" "
-#define TEXT_RETURN_LINEFEED L"\r\n"
-#define TEXT_LINEFEED L"\n"
-#define TEXT_CHARRATIO_GAPDELTA 0.070
-
-namespace {
-
-const FX_FLOAT kDefaultFontSize = 1.0f;
-const uint16_t* const g_UnicodeData_Normalization_Maps[5] = {
- nullptr, g_UnicodeData_Normalization_Map1, g_UnicodeData_Normalization_Map2,
- g_UnicodeData_Normalization_Map3, g_UnicodeData_Normalization_Map4};
-
-FX_BOOL IsIgnoreSpaceCharacter(FX_WCHAR curChar) {
- if (curChar < 255)
- return FALSE;
- if ((curChar >= 0x0600 && curChar <= 0x06FF) ||
- (curChar >= 0xFE70 && curChar <= 0xFEFF) ||
- (curChar >= 0xFB50 && curChar <= 0xFDFF) ||
- (curChar >= 0x0400 && curChar <= 0x04FF) ||
- (curChar >= 0x0500 && curChar <= 0x052F) ||
- (curChar >= 0xA640 && curChar <= 0xA69F) ||
- (curChar >= 0x2DE0 && curChar <= 0x2DFF) || curChar == 8467 ||
- (curChar >= 0x2000 && curChar <= 0x206F)) {
- return FALSE;
- }
- return TRUE;
-}
-
-FX_FLOAT NormalizeThreshold(FX_FLOAT threshold) {
- if (threshold < 300)
- return threshold / 2.0f;
- if (threshold < 500)
- return threshold / 4.0f;
- if (threshold < 700)
- return threshold / 5.0f;
- return threshold / 6.0f;
-}
-
-FX_FLOAT CalculateBaseSpace(const CPDF_TextObject* pTextObj,
- const CFX_Matrix& matrix) {
- FX_FLOAT baseSpace = 0.0;
- const int nItems = pTextObj->CountItems();
- if (pTextObj->m_TextState.GetObject()->m_CharSpace && nItems >= 3) {
- bool bAllChar = true;
- FX_FLOAT spacing = matrix.TransformDistance(
- pTextObj->m_TextState.GetObject()->m_CharSpace);
- baseSpace = spacing;
- for (int i = 0; i < nItems; i++) {
- CPDF_TextObjectItem item;
- pTextObj->GetItemInfo(i, &item);
- if (item.m_CharCode == static_cast<uint32_t>(-1)) {
- FX_FLOAT fontsize_h = pTextObj->m_TextState.GetFontSizeH();
- FX_FLOAT kerning = -fontsize_h * item.m_OriginX / 1000;
- baseSpace = std::min(baseSpace, kerning + spacing);
- bAllChar = false;
- }
- }
- if (baseSpace < 0.0 || (nItems == 3 && !bAllChar))
- baseSpace = 0.0;
- }
- return baseSpace;
-}
-
-FX_STRSIZE Unicode_GetNormalization(FX_WCHAR wch, FX_WCHAR* pDst) {
- wch = wch & 0xFFFF;
- FX_WCHAR wFind = g_UnicodeData_Normalization[wch];
- if (!wFind) {
- if (pDst)
- *pDst = wch;
- return 1;
- }
- if (wFind >= 0x8000) {
- wch = wFind - 0x8000;
- wFind = 1;
- } else {
- wch = wFind & 0x0FFF;
- wFind >>= 12;
- }
- const uint16_t* pMap = g_UnicodeData_Normalization_Maps[wFind];
- if (pMap == g_UnicodeData_Normalization_Map4) {
- pMap = g_UnicodeData_Normalization_Map4 + wch;
- wFind = (FX_WCHAR)(*pMap++);
- } else {
- pMap += wch;
- }
- if (pDst) {
- FX_WCHAR n = wFind;
- while (n--)
- *pDst++ = *pMap++;
- }
- return (FX_STRSIZE)wFind;
-}
-
-float MaskPercentFilled(const std::vector<bool>& mask,
- int32_t start,
- int32_t end) {
- if (start >= end)
- return 0;
- float count = std::count_if(mask.begin() + start, mask.begin() + end,
- [](bool r) { return r; });
- return count / (end - start);
-}
-
-} // namespace
-
-CPDF_TextPage::CPDF_TextPage(const CPDF_Page* pPage, FPDFText_Direction flags)
- : m_pPage(pPage),
- m_parserflag(flags),
- m_pPreTextObj(nullptr),
- m_bIsParsed(false),
- m_TextlineDir(TextOrientation::Unknown) {
- m_TextBuf.EstimateSize(0, 10240);
- pPage->GetDisplayMatrix(m_DisplayMatrix, 0, 0, (int)pPage->GetPageWidth(),
- (int)pPage->GetPageHeight(), 0);
-}
-
-CPDF_TextPage::~CPDF_TextPage() {}
-
-bool CPDF_TextPage::IsControlChar(const PAGECHAR_INFO& charInfo) {
- switch (charInfo.m_Unicode) {
- case 0x2:
- case 0x3:
- case 0x93:
- case 0x94:
- case 0x96:
- case 0x97:
- case 0x98:
- case 0xfffe:
- return charInfo.m_Flag != FPDFTEXT_CHAR_HYPHEN;
- default:
- return false;
- }
-}
-
-void CPDF_TextPage::ParseTextPage() {
- m_bIsParsed = false;
- m_TextBuf.Clear();
- m_CharList.clear();
- m_pPreTextObj = nullptr;
- ProcessObject();
-
- m_bIsParsed = true;
- m_CharIndex.clear();
- int nCount = pdfium::CollectionSize<int>(m_CharList);
- if (nCount)
- m_CharIndex.push_back(0);
-
- for (int i = 0; i < nCount; i++) {
- int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
- const PAGECHAR_INFO& charinfo = m_CharList[i];
- if (charinfo.m_Flag == FPDFTEXT_CHAR_GENERATED ||
- (charinfo.m_Unicode != 0 && !IsControlChar(charinfo))) {
- if (indexSize % 2) {
- m_CharIndex.push_back(1);
- } else {
- if (indexSize <= 0)
- continue;
- m_CharIndex[indexSize - 1] += 1;
- }
- } else {
- if (indexSize % 2) {
- if (indexSize <= 0)
- continue;
- m_CharIndex[indexSize - 1] = i + 1;
- } else {
- m_CharIndex.push_back(i + 1);
- }
- }
- }
- int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
- if (indexSize % 2)
- m_CharIndex.erase(m_CharIndex.begin() + indexSize - 1);
-}
-
-int CPDF_TextPage::CountChars() const {
- return pdfium::CollectionSize<int>(m_CharList);
-}
-
-int CPDF_TextPage::CharIndexFromTextIndex(int TextIndex) const {
- int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
- int count = 0;
- for (int i = 0; i < indexSize; i += 2) {
- count += m_CharIndex[i + 1];
- if (count > TextIndex)
- return TextIndex - count + m_CharIndex[i + 1] + m_CharIndex[i];
- }
- return -1;
-}
-
-int CPDF_TextPage::TextIndexFromCharIndex(int CharIndex) const {
- int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
- int count = 0;
- for (int i = 0; i < indexSize; i += 2) {
- count += m_CharIndex[i + 1];
- if (m_CharIndex[i + 1] + m_CharIndex[i] > CharIndex) {
- if (CharIndex - m_CharIndex[i] < 0)
- return -1;
-
- return CharIndex - m_CharIndex[i] + count - m_CharIndex[i + 1];
- }
- }
- return -1;
-}
-
-std::vector<CFX_FloatRect> CPDF_TextPage::GetRectArray(int start,
- int nCount) const {
- if (start < 0 || nCount == 0 || !m_bIsParsed)
- return std::vector<CFX_FloatRect>();
-
- if (nCount + start > pdfium::CollectionSize<int>(m_CharList) ||
- nCount == -1) {
- nCount = pdfium::CollectionSize<int>(m_CharList) - start;
- }
-
- std::vector<CFX_FloatRect> rectArray;
- CPDF_TextObject* pCurObj = nullptr;
- CFX_FloatRect rect;
- int curPos = start;
- bool bFlagNewRect = true;
- while (nCount--) {
- PAGECHAR_INFO info_curchar = m_CharList[curPos++];
- if (info_curchar.m_Flag == FPDFTEXT_CHAR_GENERATED)
- continue;
- if (info_curchar.m_CharBox.Width() < 0.01 ||
- info_curchar.m_CharBox.Height() < 0.01) {
- continue;
- }
- if (!pCurObj)
- pCurObj = info_curchar.m_pTextObj;
- if (pCurObj != info_curchar.m_pTextObj) {
- rectArray.push_back(rect);
- pCurObj = info_curchar.m_pTextObj;
- bFlagNewRect = true;
- }
- if (bFlagNewRect) {
- FX_FLOAT orgX = info_curchar.m_OriginX, orgY = info_curchar.m_OriginY;
- CFX_Matrix matrix, matrix_reverse;
- info_curchar.m_pTextObj->GetTextMatrix(&matrix);
- matrix.Concat(info_curchar.m_Matrix);
- matrix_reverse.SetReverse(matrix);
- matrix_reverse.Transform(orgX, orgY);
- rect.left = info_curchar.m_CharBox.left;
- rect.right = info_curchar.m_CharBox.right;
- if (pCurObj->GetFont()->GetTypeDescent()) {
- rect.bottom = orgY +
- pCurObj->GetFont()->GetTypeDescent() *
- pCurObj->GetFontSize() / 1000;
- FX_FLOAT xPosTemp = orgX;
- matrix.Transform(xPosTemp, rect.bottom);
- } else {
- rect.bottom = info_curchar.m_CharBox.bottom;
- }
- if (pCurObj->GetFont()->GetTypeAscent()) {
- rect.top =
- orgY +
- pCurObj->GetFont()->GetTypeAscent() * pCurObj->GetFontSize() / 1000;
- FX_FLOAT xPosTemp =
- orgX +
- GetCharWidth(info_curchar.m_CharCode, pCurObj->GetFont()) *
- pCurObj->GetFontSize() / 1000;
- matrix.Transform(xPosTemp, rect.top);
- } else {
- rect.top = info_curchar.m_CharBox.top;
- }
- bFlagNewRect = false;
- rect = info_curchar.m_CharBox;
- rect.Normalize();
- } else {
- info_curchar.m_CharBox.Normalize();
- rect.left = std::min(rect.left, info_curchar.m_CharBox.left);
- rect.right = std::max(rect.right, info_curchar.m_CharBox.right);
- rect.top = std::max(rect.top, info_curchar.m_CharBox.top);
- rect.bottom = std::min(rect.bottom, info_curchar.m_CharBox.bottom);
- }
- }
- rectArray.push_back(rect);
- return rectArray;
-}
-
-int CPDF_TextPage::GetIndexAtPos(CFX_FloatPoint point,
- FX_FLOAT xTolerance,
- FX_FLOAT yTolerance) const {
- if (!m_bIsParsed)
- return -3;
-
- int pos = 0;
- int NearPos = -1;
- double xdif = 5000;
- double ydif = 5000;
- while (pos < pdfium::CollectionSize<int>(m_CharList)) {
- PAGECHAR_INFO charinfo = m_CharList[pos];
- CFX_FloatRect charrect = charinfo.m_CharBox;
- if (charrect.Contains(point.x, point.y))
- break;
- if (xTolerance > 0 || yTolerance > 0) {
- CFX_FloatRect charRectExt;
- charrect.Normalize();
- charRectExt.left = charrect.left - xTolerance / 2;
- charRectExt.right = charrect.right + xTolerance / 2;
- charRectExt.top = charrect.top + yTolerance / 2;
- charRectExt.bottom = charrect.bottom - yTolerance / 2;
- if (charRectExt.Contains(point.x, point.y)) {
- double curXdif, curYdif;
- curXdif = FXSYS_fabs(point.x - charrect.left) <
- FXSYS_fabs(point.x - charrect.right)
- ? FXSYS_fabs(point.x - charrect.left)
- : FXSYS_fabs(point.x - charrect.right);
- curYdif = FXSYS_fabs(point.y - charrect.bottom) <
- FXSYS_fabs(point.y - charrect.top)
- ? FXSYS_fabs(point.y - charrect.bottom)
- : FXSYS_fabs(point.y - charrect.top);
- if (curYdif + curXdif < xdif + ydif) {
- ydif = curYdif;
- xdif = curXdif;
- NearPos = pos;
- }
- }
- }
- ++pos;
- }
- return pos < pdfium::CollectionSize<int>(m_CharList) ? pos : NearPos;
-}
-
-CFX_WideString CPDF_TextPage::GetTextByRect(const CFX_FloatRect& rect) const {
- if (!m_bIsParsed)
- return CFX_WideString();
-
- FX_FLOAT posy = 0;
- bool IsContainPreChar = false;
- bool IsAddLineFeed = false;
- CFX_WideString strText;
- for (const auto& charinfo : m_CharList) {
- if (IsRectIntersect(rect, charinfo.m_CharBox)) {
- if (FXSYS_fabs(posy - charinfo.m_OriginY) > 0 && !IsContainPreChar &&
- IsAddLineFeed) {
- posy = charinfo.m_OriginY;
- if (!strText.IsEmpty())
- strText += L"\r\n";
- }
- IsContainPreChar = true;
- IsAddLineFeed = false;
- if (charinfo.m_Unicode)
- strText += charinfo.m_Unicode;
- } else if (charinfo.m_Unicode == 32) {
- if (IsContainPreChar && charinfo.m_Unicode) {
- strText += charinfo.m_Unicode;
- IsContainPreChar = false;
- IsAddLineFeed = false;
- }
- } else {
- IsContainPreChar = false;
- IsAddLineFeed = true;
- }
- }
- return strText;
-}
-
-int CPDF_TextPage::GetIndexAtPos(FX_FLOAT x,
- FX_FLOAT y,
- FX_FLOAT xTolerance,
- FX_FLOAT yTolerance) const {
- CFX_FloatPoint point(x, y);
- return GetIndexAtPos(point, xTolerance, yTolerance);
-}
-
-void CPDF_TextPage::GetCharInfo(int index, FPDF_CHAR_INFO* info) const {
- if (!m_bIsParsed)
- return;
-
- if (index < 0 || index >= pdfium::CollectionSize<int>(m_CharList))
- return;
-
- const PAGECHAR_INFO& charinfo = m_CharList[index];
- info->m_Charcode = charinfo.m_CharCode;
- info->m_OriginX = charinfo.m_OriginX;
- info->m_OriginY = charinfo.m_OriginY;
- info->m_Unicode = charinfo.m_Unicode;
- info->m_Flag = charinfo.m_Flag;
- info->m_CharBox = charinfo.m_CharBox;
- info->m_pTextObj = charinfo.m_pTextObj;
- if (charinfo.m_pTextObj && charinfo.m_pTextObj->GetFont())
- info->m_FontSize = charinfo.m_pTextObj->GetFontSize();
- else
- info->m_FontSize = kDefaultFontSize;
- info->m_Matrix.Copy(charinfo.m_Matrix);
-}
-
-void CPDF_TextPage::CheckMarkedContentObject(int32_t& start,
- int32_t& nCount) const {
- PAGECHAR_INFO charinfo = m_CharList[start];
- PAGECHAR_INFO charinfo2 = m_CharList[start + nCount - 1];
- if (FPDFTEXT_CHAR_PIECE != charinfo.m_Flag &&
- FPDFTEXT_CHAR_PIECE != charinfo2.m_Flag) {
- return;
- }
- if (FPDFTEXT_CHAR_PIECE == charinfo.m_Flag) {
- PAGECHAR_INFO charinfo1 = charinfo;
- int startIndex = start;
- while (FPDFTEXT_CHAR_PIECE == charinfo1.m_Flag &&
- charinfo1.m_Index == charinfo.m_Index) {
- startIndex--;
- if (startIndex < 0)
- break;
- charinfo1 = m_CharList[startIndex];
- }
- startIndex++;
- start = startIndex;
- }
- if (FPDFTEXT_CHAR_PIECE == charinfo2.m_Flag) {
- PAGECHAR_INFO charinfo3 = charinfo2;
- int endIndex = start + nCount - 1;
- while (FPDFTEXT_CHAR_PIECE == charinfo3.m_Flag &&
- charinfo3.m_Index == charinfo2.m_Index) {
- endIndex++;
- if (endIndex >= pdfium::CollectionSize<int>(m_CharList))
- break;
- charinfo3 = m_CharList[endIndex];
- }
- endIndex--;
- nCount = endIndex - start + 1;
- }
-}
-
-CFX_WideString CPDF_TextPage::GetPageText(int start, int nCount) const {
- if (!m_bIsParsed || nCount == 0)
- return L"";
-
- if (start < 0)
- start = 0;
-
- if (nCount == -1) {
- nCount = pdfium::CollectionSize<int>(m_CharList) - start;
- return CFX_WideString(
- m_TextBuf.AsStringC().Mid(start, m_TextBuf.AsStringC().GetLength()));
- }
- if (nCount <= 0 || m_CharList.empty())
- return L"";
- if (nCount + start > pdfium::CollectionSize<int>(m_CharList) - 1)
- nCount = pdfium::CollectionSize<int>(m_CharList) - start;
- if (nCount <= 0)
- return L"";
- CheckMarkedContentObject(start, nCount);
- int startindex = 0;
- PAGECHAR_INFO charinfo = m_CharList[start];
- int startOffset = 0;
- while (charinfo.m_Index == -1) {
- startOffset++;
- if (startOffset > nCount ||
- start + startOffset >= pdfium::CollectionSize<int>(m_CharList)) {
- return L"";
- }
- charinfo = m_CharList[start + startOffset];
- }
- startindex = charinfo.m_Index;
- charinfo = m_CharList[start + nCount - 1];
- int nCountOffset = 0;
- while (charinfo.m_Index == -1) {
- nCountOffset++;
- if (nCountOffset >= nCount)
- return L"";
- charinfo = m_CharList[start + nCount - nCountOffset - 1];
- }
- nCount = start + nCount - nCountOffset - startindex;
- if (nCount <= 0)
- return L"";
- return CFX_WideString(m_TextBuf.AsStringC().Mid(startindex, nCount));
-}
-
-int CPDF_TextPage::CountRects(int start, int nCount) {
- if (!m_bIsParsed || start < 0)
- return -1;
-
- if (nCount == -1 ||
- nCount + start > pdfium::CollectionSize<int>(m_CharList)) {
- nCount = pdfium::CollectionSize<int>(m_CharList) - start;
- }
- m_SelRects = GetRectArray(start, nCount);
- return pdfium::CollectionSize<int>(m_SelRects);
-}
-
-void CPDF_TextPage::GetRect(int rectIndex,
- FX_FLOAT& left,
- FX_FLOAT& top,
- FX_FLOAT& right,
- FX_FLOAT& bottom) const {
- if (!m_bIsParsed)
- return;
-
- if (rectIndex < 0 || rectIndex >= pdfium::CollectionSize<int>(m_SelRects))
- return;
-
- left = m_SelRects[rectIndex].left;
- top = m_SelRects[rectIndex].top;
- right = m_SelRects[rectIndex].right;
- bottom = m_SelRects[rectIndex].bottom;
-}
-
-CPDF_TextPage::TextOrientation CPDF_TextPage::FindTextlineFlowOrientation()
- const {
- if (m_pPage->GetPageObjectList()->empty())
- return TextOrientation::Unknown;
-
- const int32_t nPageWidth = static_cast<int32_t>(m_pPage->GetPageWidth());
- const int32_t nPageHeight = static_cast<int32_t>(m_pPage->GetPageHeight());
- std::vector<bool> nHorizontalMask(nPageWidth);
- std::vector<bool> nVerticalMask(nPageHeight);
- FX_FLOAT fLineHeight = 0.0f;
- int32_t nStartH = nPageWidth;
- int32_t nEndH = 0;
- int32_t nStartV = nPageHeight;
- int32_t nEndV = 0;
- for (const auto& pPageObj : *m_pPage->GetPageObjectList()) {
- if (!pPageObj->IsText())
- continue;
-
- int32_t minH = std::max(static_cast<int32_t>(pPageObj->m_Left), 0);
- int32_t maxH =
- std::min(static_cast<int32_t>(pPageObj->m_Right), nPageWidth);
- int32_t minV = std::max(static_cast<int32_t>(pPageObj->m_Bottom), 0);
- int32_t maxV = std::min(static_cast<int32_t>(pPageObj->m_Top), nPageHeight);
- if (minH >= maxH || minV >= maxV)
- continue;
-
- for (int32_t i = minH; i < maxH; ++i)
- nHorizontalMask[i] = true;
- for (int32_t i = minV; i < maxV; ++i)
- nVerticalMask[i] = true;
-
- nStartH = std::min(nStartH, minH);
- nEndH = std::max(nEndH, maxH);
- nStartV = std::min(nStartV, minV);
- nEndV = std::max(nEndV, maxV);
-
- if (fLineHeight <= 0.0f)
- fLineHeight = pPageObj->m_Top - pPageObj->m_Bottom;
- }
- const int32_t nDoubleLineHeight = 2 * fLineHeight;
- if ((nEndV - nStartV) < nDoubleLineHeight)
- return TextOrientation::Horizontal;
- if ((nEndH - nStartH) < nDoubleLineHeight)
- return TextOrientation::Vertical;
-
- const FX_FLOAT nSumH = MaskPercentFilled(nHorizontalMask, nStartH, nEndH);
- if (nSumH > 0.8f)
- return TextOrientation::Horizontal;
-
- const FX_FLOAT nSumV = MaskPercentFilled(nVerticalMask, nStartV, nEndV);
- if (nSumH > nSumV)
- return TextOrientation::Horizontal;
- if (nSumH < nSumV)
- return TextOrientation::Vertical;
- return TextOrientation::Unknown;
-}
-
-void CPDF_TextPage::AppendGeneratedCharacter(FX_WCHAR unicode,
- const CFX_Matrix& formMatrix) {
- PAGECHAR_INFO generateChar;
- if (!GenerateCharInfo(unicode, generateChar))
- return;
-
- m_TextBuf.AppendChar(unicode);
- if (!formMatrix.IsIdentity())
- generateChar.m_Matrix.Copy(formMatrix);
- m_CharList.push_back(generateChar);
-}
-
-void CPDF_TextPage::ProcessObject() {
- if (m_pPage->GetPageObjectList()->empty())
- return;
-
- m_TextlineDir = FindTextlineFlowOrientation();
- const CPDF_PageObjectList* pObjList = m_pPage->GetPageObjectList();
- for (auto it = pObjList->begin(); it != pObjList->end(); ++it) {
- if (CPDF_PageObject* pObj = it->get()) {
- if (pObj->IsText()) {
- CFX_Matrix matrix;
- ProcessTextObject(pObj->AsText(), matrix, pObjList, it);
- } else if (pObj->IsForm()) {
- CFX_Matrix formMatrix(1, 0, 0, 1, 0, 0);
- ProcessFormObject(pObj->AsForm(), formMatrix);
- }
- }
- }
- for (int i = 0; i < m_LineObj.GetSize(); i++)
- ProcessTextObject(m_LineObj.GetAt(i));
-
- m_LineObj.RemoveAll();
- CloseTempLine();
-}
-
-void CPDF_TextPage::ProcessFormObject(CPDF_FormObject* pFormObj,
- const CFX_Matrix& formMatrix) {
- CPDF_PageObjectList* pObjectList = pFormObj->m_pForm->GetPageObjectList();
- if (pObjectList->empty())
- return;
-
- CFX_Matrix curFormMatrix;
- curFormMatrix.Copy(pFormObj->m_FormMatrix);
- curFormMatrix.Concat(formMatrix);
-
- for (auto it = pObjectList->begin(); it != pObjectList->end(); ++it) {
- if (CPDF_PageObject* pPageObj = it->get()) {
- if (pPageObj->IsText())
- ProcessTextObject(pPageObj->AsText(), curFormMatrix, pObjectList, it);
- else if (pPageObj->IsForm())
- ProcessFormObject(pPageObj->AsForm(), curFormMatrix);
- }
- }
-}
-
-int CPDF_TextPage::GetCharWidth(uint32_t charCode, CPDF_Font* pFont) const {
- if (charCode == CPDF_Font::kInvalidCharCode)
- return 0;
-
- if (int w = pFont->GetCharWidthF(charCode))
- return w;
-
- CFX_ByteString str;
- pFont->AppendChar(str, charCode);
- if (int w = pFont->GetStringWidth(str.c_str(), 1))
- return w;
-
- return pFont->GetCharBBox(charCode).Width();
-}
-
-void CPDF_TextPage::AddCharInfoByLRDirection(FX_WCHAR wChar,
- PAGECHAR_INFO info) {
- if (IsControlChar(info)) {
- info.m_Index = -1;
- m_CharList.push_back(info);
- return;
- }
-
- info.m_Index = m_TextBuf.GetLength();
- if (wChar >= 0xFB00 && wChar <= 0xFB06) {
- FX_WCHAR* pDst = nullptr;
- FX_STRSIZE nCount = Unicode_GetNormalization(wChar, pDst);
- if (nCount >= 1) {
- pDst = FX_Alloc(FX_WCHAR, nCount);
- Unicode_GetNormalization(wChar, pDst);
- for (int nIndex = 0; nIndex < nCount; nIndex++) {
- PAGECHAR_INFO info2 = info;
- info2.m_Unicode = pDst[nIndex];
- info2.m_Flag = FPDFTEXT_CHAR_PIECE;
- m_TextBuf.AppendChar(info2.m_Unicode);
- m_CharList.push_back(info2);
- }
- FX_Free(pDst);
- return;
- }
- }
- m_TextBuf.AppendChar(wChar);
- m_CharList.push_back(info);
-}
-
-void CPDF_TextPage::AddCharInfoByRLDirection(FX_WCHAR wChar,
- PAGECHAR_INFO info) {
- if (IsControlChar(info)) {
- info.m_Index = -1;
- m_CharList.push_back(info);
- return;
- }
-
- info.m_Index = m_TextBuf.GetLength();
- wChar = FX_GetMirrorChar(wChar, TRUE, FALSE);
- FX_WCHAR* pDst = nullptr;
- FX_STRSIZE nCount = Unicode_GetNormalization(wChar, pDst);
- if (nCount >= 1) {
- pDst = FX_Alloc(FX_WCHAR, nCount);
- Unicode_GetNormalization(wChar, pDst);
- for (int nIndex = 0; nIndex < nCount; nIndex++) {
- PAGECHAR_INFO info2 = info;
- info2.m_Unicode = pDst[nIndex];
- info2.m_Flag = FPDFTEXT_CHAR_PIECE;
- m_TextBuf.AppendChar(info2.m_Unicode);
- m_CharList.push_back(info2);
- }
- FX_Free(pDst);
- return;
- }
- info.m_Unicode = wChar;
- m_TextBuf.AppendChar(info.m_Unicode);
- m_CharList.push_back(info);
-}
-
-void CPDF_TextPage::CloseTempLine() {
- if (m_TempCharList.empty())
- return;
-
- CFX_WideString str = m_TempTextBuf.MakeString();
- bool bPrevSpace = false;
- for (int i = 0; i < str.GetLength(); i++) {
- if (str.GetAt(i) != ' ') {
- bPrevSpace = false;
- continue;
- }
- if (bPrevSpace) {
- m_TempTextBuf.Delete(i, 1);
- m_TempCharList.erase(m_TempCharList.begin() + i);
- str.Delete(i);
- i--;
- }
- bPrevSpace = true;
- }
- CFX_BidiString bidi(str);
- if (m_parserflag == FPDFText_Direction::Right)
- bidi.SetOverallDirectionRight();
- CFX_BidiChar::Direction eCurrentDirection = bidi.OverallDirection();
- for (const auto& segment : bidi) {
- if (segment.direction == CFX_BidiChar::RIGHT ||
- (segment.direction == CFX_BidiChar::NEUTRAL &&
- eCurrentDirection == CFX_BidiChar::RIGHT)) {
- eCurrentDirection = CFX_BidiChar::RIGHT;
- for (int m = segment.start + segment.count; m > segment.start; --m)
- AddCharInfoByRLDirection(bidi.CharAt(m - 1), m_TempCharList[m - 1]);
- } else {
- eCurrentDirection = CFX_BidiChar::LEFT;
- for (int m = segment.start; m < segment.start + segment.count; m++)
- AddCharInfoByLRDirection(bidi.CharAt(m), m_TempCharList[m]);
- }
- }
- m_TempCharList.clear();
- m_TempTextBuf.Delete(0, m_TempTextBuf.GetLength());
-}
-
-void CPDF_TextPage::ProcessTextObject(
- CPDF_TextObject* pTextObj,
- const CFX_Matrix& formMatrix,
- const CPDF_PageObjectList* pObjList,
- CPDF_PageObjectList::const_iterator ObjPos) {
- CFX_FloatRect re(pTextObj->m_Left, pTextObj->m_Bottom, pTextObj->m_Right,
- pTextObj->m_Top);
- if (FXSYS_fabs(pTextObj->m_Right - pTextObj->m_Left) < 0.01f)
- return;
- int count = m_LineObj.GetSize();
- PDFTEXT_Obj Obj;
- Obj.m_pTextObj = pTextObj;
- Obj.m_formMatrix = formMatrix;
- if (count == 0) {
- m_LineObj.Add(Obj);
- return;
- }
- if (IsSameAsPreTextObject(pTextObj, pObjList, ObjPos))
- return;
- PDFTEXT_Obj prev_Obj = m_LineObj.GetAt(count - 1);
- CPDF_TextObjectItem item;
- int nItem = prev_Obj.m_pTextObj->CountItems();
- prev_Obj.m_pTextObj->GetItemInfo(nItem - 1, &item);
- FX_FLOAT prev_width =
- GetCharWidth(item.m_CharCode, prev_Obj.m_pTextObj->GetFont()) *
- prev_Obj.m_pTextObj->GetFontSize() / 1000;
- CFX_Matrix prev_matrix;
- prev_Obj.m_pTextObj->GetTextMatrix(&prev_matrix);
- prev_width = FXSYS_fabs(prev_width);
- prev_matrix.Concat(prev_Obj.m_formMatrix);
- prev_width = prev_matrix.TransformDistance(prev_width);
- pTextObj->GetItemInfo(0, &item);
- FX_FLOAT this_width = GetCharWidth(item.m_CharCode, pTextObj->GetFont()) *
- pTextObj->GetFontSize() / 1000;
- this_width = FXSYS_fabs(this_width);
- CFX_Matrix this_matrix;
- pTextObj->GetTextMatrix(&this_matrix);
- this_width = FXSYS_fabs(this_width);
- this_matrix.Concat(formMatrix);
- this_width = this_matrix.TransformDistance(this_width);
- FX_FLOAT threshold =
- prev_width > this_width ? prev_width / 4 : this_width / 4;
- FX_FLOAT prev_x = prev_Obj.m_pTextObj->GetPosX(),
- prev_y = prev_Obj.m_pTextObj->GetPosY();
- prev_Obj.m_formMatrix.Transform(prev_x, prev_y);
- m_DisplayMatrix.Transform(prev_x, prev_y);
- FX_FLOAT this_x = pTextObj->GetPosX(), this_y = pTextObj->GetPosY();
- formMatrix.Transform(this_x, this_y);
- m_DisplayMatrix.Transform(this_x, this_y);
- if (FXSYS_fabs(this_y - prev_y) > threshold * 2) {
- for (int i = 0; i < count; i++)
- ProcessTextObject(m_LineObj.GetAt(i));
- m_LineObj.RemoveAll();
- m_LineObj.Add(Obj);
- return;
- }
- int i = 0;
- for (i = count - 1; i >= 0; i--) {
- PDFTEXT_Obj prev_text_obj = m_LineObj.GetAt(i);
- FX_FLOAT Prev_x = prev_text_obj.m_pTextObj->GetPosX(),
- Prev_y = prev_text_obj.m_pTextObj->GetPosY();
- prev_text_obj.m_formMatrix.Transform(Prev_x, Prev_y);
- m_DisplayMatrix.Transform(Prev_x, Prev_y);
- if (this_x >= Prev_x) {
- if (i == count - 1)
- m_LineObj.Add(Obj);
- else
- m_LineObj.InsertAt(i + 1, Obj);
- break;
- }
- }
- if (i < 0)
- m_LineObj.InsertAt(0, Obj);
-}
-
-FPDFText_MarkedContent CPDF_TextPage::PreMarkedContent(PDFTEXT_Obj Obj) {
- CPDF_TextObject* pTextObj = Obj.m_pTextObj;
- const CPDF_ContentMarkData* pMarkData = pTextObj->m_ContentMark.GetObject();
- if (!pMarkData)
- return FPDFText_MarkedContent::Pass;
-
- int nContentMark = pMarkData->CountItems();
- if (nContentMark < 1)
- return FPDFText_MarkedContent::Pass;
-
- CFX_WideString actText;
- bool bExist = false;
- CPDF_Dictionary* pDict = nullptr;
- int n = 0;
- for (n = 0; n < nContentMark; n++) {
- const CPDF_ContentMarkItem& item = pMarkData->GetItem(n);
- if (item.GetParamType() == CPDF_ContentMarkItem::ParamType::None)
- continue;
- pDict = item.GetParam();
- CPDF_String* temp =
- ToString(pDict ? pDict->GetObjectBy("ActualText") : nullptr);
- if (temp) {
- bExist = true;
- actText = temp->GetUnicodeText();
- }
- }
- if (!bExist)
- return FPDFText_MarkedContent::Pass;
-
- if (m_pPreTextObj) {
- const CPDF_ContentMarkData* pPreMarkData =
- m_pPreTextObj->m_ContentMark.GetObject();
- if (pPreMarkData && pPreMarkData->CountItems() == n &&
- pDict == pPreMarkData->GetItem(n - 1).GetParam()) {
- return FPDFText_MarkedContent::Done;
- }
- }
- FX_STRSIZE nItems = actText.GetLength();
- if (nItems < 1)
- return FPDFText_MarkedContent::Pass;
-
- CPDF_Font* pFont = pTextObj->GetFont();
- bExist = false;
- for (FX_STRSIZE i = 0; i < nItems; i++) {
- if (pFont->CharCodeFromUnicode(actText.GetAt(i)) !=
- CPDF_Font::kInvalidCharCode) {
- bExist = true;
- break;
- }
- }
- if (!bExist)
- return FPDFText_MarkedContent::Pass;
-
- bExist = false;
- for (FX_STRSIZE i = 0; i < nItems; i++) {
- FX_WCHAR wChar = actText.GetAt(i);
- if ((wChar > 0x80 && wChar < 0xFFFD) || (wChar <= 0x80 && isprint(wChar))) {
- bExist = true;
- break;
- }
- }
- if (!bExist)
- return FPDFText_MarkedContent::Done;
-
- return FPDFText_MarkedContent::Delay;
-}
-
-void CPDF_TextPage::ProcessMarkedContent(PDFTEXT_Obj Obj) {
- CPDF_TextObject* pTextObj = Obj.m_pTextObj;
- const CPDF_ContentMarkData* pMarkData = pTextObj->m_ContentMark.GetObject();
- if (!pMarkData)
- return;
-
- int nContentMark = pMarkData->CountItems();
- if (nContentMark < 1)
- return;
- CFX_WideString actText;
- CPDF_Dictionary* pDict = nullptr;
- for (int n = 0; n < nContentMark; n++) {
- const CPDF_ContentMarkItem& item = pMarkData->GetItem(n);
- if (item.GetParamType() == CPDF_ContentMarkItem::ParamType::None)
- continue;
- pDict = item.GetParam();
- if (pDict)
- actText = pDict->GetUnicodeTextBy("ActualText");
- }
- FX_STRSIZE nItems = actText.GetLength();
- if (nItems < 1)
- return;
-
- CPDF_Font* pFont = pTextObj->GetFont();
- CFX_Matrix formMatrix = Obj.m_formMatrix;
- CFX_Matrix matrix;
- pTextObj->GetTextMatrix(&matrix);
- matrix.Concat(formMatrix);
- FX_FLOAT fPosX = pTextObj->GetPosX();
- FX_FLOAT fPosY = pTextObj->GetPosY();
- int nCharInfoIndex = m_TextBuf.GetLength();
- CFX_FloatRect charBox;
- charBox.top = pTextObj->m_Top;
- charBox.left = pTextObj->m_Left;
- charBox.right = pTextObj->m_Right;
- charBox.bottom = pTextObj->m_Bottom;
- for (FX_STRSIZE k = 0; k < nItems; k++) {
- FX_WCHAR wChar = actText.GetAt(k);
- if (wChar <= 0x80 && !isprint(wChar))
- wChar = 0x20;
- if (wChar >= 0xFFFD)
- continue;
- PAGECHAR_INFO charinfo;
- charinfo.m_OriginX = fPosX;
- charinfo.m_OriginY = fPosY;
- charinfo.m_Index = nCharInfoIndex;
- charinfo.m_Unicode = wChar;
- charinfo.m_CharCode = pFont->CharCodeFromUnicode(wChar);
- charinfo.m_Flag = FPDFTEXT_CHAR_PIECE;
- charinfo.m_pTextObj = pTextObj;
- charinfo.m_CharBox.top = charBox.top;
- charinfo.m_CharBox.left = charBox.left;
- charinfo.m_CharBox.right = charBox.right;
- charinfo.m_CharBox.bottom = charBox.bottom;
- charinfo.m_Matrix.Copy(matrix);
- m_TempTextBuf.AppendChar(wChar);
- m_TempCharList.push_back(charinfo);
- }
-}
-
-void CPDF_TextPage::FindPreviousTextObject() {
- if (m_TempCharList.empty() && m_CharList.empty())
- return;
-
- PAGECHAR_INFO preChar =
- m_TempCharList.empty() ? m_CharList.back() : m_TempCharList.back();
-
- if (preChar.m_pTextObj)
- m_pPreTextObj = preChar.m_pTextObj;
-}
-
-void CPDF_TextPage::SwapTempTextBuf(int32_t iCharListStartAppend,
- int32_t iBufStartAppend) {
- int32_t i = iCharListStartAppend;
- int32_t j = pdfium::CollectionSize<int32_t>(m_TempCharList) - 1;
- for (; i < j; i++, j--) {
- std::swap(m_TempCharList[i], m_TempCharList[j]);
- std::swap(m_TempCharList[i].m_Index, m_TempCharList[j].m_Index);
- }
- FX_WCHAR* pTempBuffer = m_TempTextBuf.GetBuffer();
- i = iBufStartAppend;
- j = m_TempTextBuf.GetLength() - 1;
- for (; i < j; i++, j--)
- std::swap(pTempBuffer[i], pTempBuffer[j]);
-}
-
-FX_BOOL CPDF_TextPage::IsRightToLeft(const CPDF_TextObject* pTextObj,
- const CPDF_Font* pFont,
- int nItems) const {
- CFX_WideString str;
- for (int32_t i = 0; i < nItems; i++) {
- CPDF_TextObjectItem item;
- pTextObj->GetItemInfo(i, &item);
- if (item.m_CharCode == static_cast<uint32_t>(-1))
- continue;
- CFX_WideString wstrItem = pFont->UnicodeFromCharCode(item.m_CharCode);
- FX_WCHAR wChar = wstrItem.GetAt(0);
- if ((wstrItem.IsEmpty() || wChar == 0) && item.m_CharCode)
- wChar = (FX_WCHAR)item.m_CharCode;
- if (wChar)
- str += wChar;
- }
- return CFX_BidiString(str).OverallDirection() == CFX_BidiChar::RIGHT;
-}
-
-void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj) {
- CPDF_TextObject* pTextObj = Obj.m_pTextObj;
- if (FXSYS_fabs(pTextObj->m_Right - pTextObj->m_Left) < 0.01f)
- return;
- CFX_Matrix formMatrix = Obj.m_formMatrix;
- CPDF_Font* pFont = pTextObj->GetFont();
- CFX_Matrix matrix;
- pTextObj->GetTextMatrix(&matrix);
- matrix.Concat(formMatrix);
- FPDFText_MarkedContent ePreMKC = PreMarkedContent(Obj);
- if (ePreMKC == FPDFText_MarkedContent::Done) {
- m_pPreTextObj = pTextObj;
- m_perMatrix.Copy(formMatrix);
- return;
- }
- GenerateCharacter result = GenerateCharacter::None;
- if (m_pPreTextObj) {
- result = ProcessInsertObject(pTextObj, formMatrix);
- if (result == GenerateCharacter::LineBreak) {
- m_CurlineRect =
- CFX_FloatRect(Obj.m_pTextObj->m_Left, Obj.m_pTextObj->m_Bottom,
- Obj.m_pTextObj->m_Right, Obj.m_pTextObj->m_Top);
- } else {
- m_CurlineRect.Union(
- CFX_FloatRect(Obj.m_pTextObj->m_Left, Obj.m_pTextObj->m_Bottom,
- Obj.m_pTextObj->m_Right, Obj.m_pTextObj->m_Top));
- }
- switch (result) {
- case GenerateCharacter::None:
- break;
- case GenerateCharacter::Space: {
- PAGECHAR_INFO generateChar;
- if (GenerateCharInfo(TEXT_SPACE_CHAR, generateChar)) {
- if (!formMatrix.IsIdentity())
- generateChar.m_Matrix.Copy(formMatrix);
- m_TempTextBuf.AppendChar(TEXT_SPACE_CHAR);
- m_TempCharList.push_back(generateChar);
- }
- break;
- }
- case GenerateCharacter::LineBreak:
- CloseTempLine();
- if (m_TextBuf.GetSize()) {
- AppendGeneratedCharacter(TEXT_RETURN_CHAR, formMatrix);
- AppendGeneratedCharacter(TEXT_LINEFEED_CHAR, formMatrix);
- }
- break;
- case GenerateCharacter::Hyphen:
- if (pTextObj->CountChars() == 1) {
- CPDF_TextObjectItem item;
- pTextObj->GetCharInfo(0, &item);
- CFX_WideString wstrItem =
- pTextObj->GetFont()->UnicodeFromCharCode(item.m_CharCode);
- if (wstrItem.IsEmpty())
- wstrItem += (FX_WCHAR)item.m_CharCode;
- FX_WCHAR curChar = wstrItem.GetAt(0);
- if (curChar == 0x2D || curChar == 0xAD)
- return;
- }
- while (m_TempTextBuf.GetSize() > 0 &&
- m_TempTextBuf.AsStringC().GetAt(m_TempTextBuf.GetLength() - 1) ==
- 0x20) {
- m_TempTextBuf.Delete(m_TempTextBuf.GetLength() - 1, 1);
- m_TempCharList.pop_back();
- }
- PAGECHAR_INFO* charinfo = &m_TempCharList.back();
- m_TempTextBuf.Delete(m_TempTextBuf.GetLength() - 1, 1);
- charinfo->m_Unicode = 0x2;
- charinfo->m_Flag = FPDFTEXT_CHAR_HYPHEN;
- m_TempTextBuf.AppendChar(0xfffe);
- break;
- }
- } else {
- m_CurlineRect =
- CFX_FloatRect(Obj.m_pTextObj->m_Left, Obj.m_pTextObj->m_Bottom,
- Obj.m_pTextObj->m_Right, Obj.m_pTextObj->m_Top);
- }
- if (ePreMKC == FPDFText_MarkedContent::Delay) {
- ProcessMarkedContent(Obj);
- m_pPreTextObj = pTextObj;
- m_perMatrix.Copy(formMatrix);
- return;
- }
- m_pPreTextObj = pTextObj;
- m_perMatrix.Copy(formMatrix);
- int nItems = pTextObj->CountItems();
- FX_FLOAT baseSpace = CalculateBaseSpace(pTextObj, matrix);
-
- const FX_BOOL bR2L = IsRightToLeft(pTextObj, pFont, nItems);
- const FX_BOOL bIsBidiAndMirrorInverse =
- bR2L && (matrix.a * matrix.d - matrix.b * matrix.c) < 0;
- int32_t iBufStartAppend = m_TempTextBuf.GetLength();
- int32_t iCharListStartAppend =
- pdfium::CollectionSize<int32_t>(m_TempCharList);
-
- FX_FLOAT spacing = 0;
- for (int i = 0; i < nItems; i++) {
- CPDF_TextObjectItem item;
- PAGECHAR_INFO charinfo;
- charinfo.m_OriginX = 0;
- charinfo.m_OriginY = 0;
- pTextObj->GetItemInfo(i, &item);
- if (item.m_CharCode == static_cast<uint32_t>(-1)) {
- CFX_WideString str = m_TempTextBuf.MakeString();
- if (str.IsEmpty())
- str = m_TextBuf.AsStringC();
- if (str.IsEmpty() || str.GetAt(str.GetLength() - 1) == TEXT_SPACE_CHAR)
- continue;
-
- FX_FLOAT fontsize_h = pTextObj->m_TextState.GetFontSizeH();
- spacing = -fontsize_h * item.m_OriginX / 1000;
- continue;
- }
- FX_FLOAT charSpace = pTextObj->m_TextState.GetObject()->m_CharSpace;
- if (charSpace > 0.001)
- spacing += matrix.TransformDistance(charSpace);
- else if (charSpace < -0.001)
- spacing -= matrix.TransformDistance(FXSYS_fabs(charSpace));
- spacing -= baseSpace;
- if (spacing && i > 0) {
- int last_width = 0;
- FX_FLOAT fontsize_h = pTextObj->m_TextState.GetFontSizeH();
- uint32_t space_charcode = pFont->CharCodeFromUnicode(' ');
- FX_FLOAT threshold = 0;
- if (space_charcode != CPDF_Font::kInvalidCharCode)
- threshold = fontsize_h * pFont->GetCharWidthF(space_charcode) / 1000;
- if (threshold > fontsize_h / 3)
- threshold = 0;
- else
- threshold /= 2;
- if (threshold == 0) {
- threshold = fontsize_h;
- int this_width = FXSYS_abs(GetCharWidth(item.m_CharCode, pFont));
- threshold = this_width > last_width ? (FX_FLOAT)this_width
- : (FX_FLOAT)last_width;
- threshold = NormalizeThreshold(threshold);
- threshold = fontsize_h * threshold / 1000;
- }
- if (threshold && (spacing && spacing >= threshold)) {
- charinfo.m_Unicode = TEXT_SPACE_CHAR;
- charinfo.m_Flag = FPDFTEXT_CHAR_GENERATED;
- charinfo.m_pTextObj = pTextObj;
- charinfo.m_Index = m_TextBuf.GetLength();
- m_TempTextBuf.AppendChar(TEXT_SPACE_CHAR);
- charinfo.m_CharCode = CPDF_Font::kInvalidCharCode;
- charinfo.m_Matrix.Copy(formMatrix);
- matrix.Transform(item.m_OriginX, item.m_OriginY, charinfo.m_OriginX,
- charinfo.m_OriginY);
- charinfo.m_CharBox =
- CFX_FloatRect(charinfo.m_OriginX, charinfo.m_OriginY,
- charinfo.m_OriginX, charinfo.m_OriginY);
- m_TempCharList.push_back(charinfo);
- }
- if (item.m_CharCode == CPDF_Font::kInvalidCharCode)
- continue;
- }
- spacing = 0;
- CFX_WideString wstrItem = pFont->UnicodeFromCharCode(item.m_CharCode);
- bool bNoUnicode = false;
- FX_WCHAR wChar = wstrItem.GetAt(0);
- if ((wstrItem.IsEmpty() || wChar == 0) && item.m_CharCode) {
- if (wstrItem.IsEmpty())
- wstrItem += (FX_WCHAR)item.m_CharCode;
- else
- wstrItem.SetAt(0, (FX_WCHAR)item.m_CharCode);
- bNoUnicode = true;
- }
- charinfo.m_Index = -1;
- charinfo.m_CharCode = item.m_CharCode;
- if (bNoUnicode)
- charinfo.m_Flag = FPDFTEXT_CHAR_UNUNICODE;
- else
- charinfo.m_Flag = FPDFTEXT_CHAR_NORMAL;
- charinfo.m_pTextObj = pTextObj;
- charinfo.m_OriginX = 0, charinfo.m_OriginY = 0;
- matrix.Transform(item.m_OriginX, item.m_OriginY, charinfo.m_OriginX,
- charinfo.m_OriginY);
- FX_RECT rect =
- charinfo.m_pTextObj->GetFont()->GetCharBBox(charinfo.m_CharCode);
- charinfo.m_CharBox.top =
- rect.top * pTextObj->GetFontSize() / 1000 + item.m_OriginY;
- charinfo.m_CharBox.left =
- rect.left * pTextObj->GetFontSize() / 1000 + item.m_OriginX;
- charinfo.m_CharBox.right =
- rect.right * pTextObj->GetFontSize() / 1000 + item.m_OriginX;
- charinfo.m_CharBox.bottom =
- rect.bottom * pTextObj->GetFontSize() / 1000 + item.m_OriginY;
- if (fabsf(charinfo.m_CharBox.top - charinfo.m_CharBox.bottom) < 0.01f) {
- charinfo.m_CharBox.top =
- charinfo.m_CharBox.bottom + pTextObj->GetFontSize();
- }
- if (fabsf(charinfo.m_CharBox.right - charinfo.m_CharBox.left) < 0.01f) {
- charinfo.m_CharBox.right =
- charinfo.m_CharBox.left + pTextObj->GetCharWidth(charinfo.m_CharCode);
- }
- matrix.TransformRect(charinfo.m_CharBox);
- charinfo.m_Matrix.Copy(matrix);
- if (wstrItem.IsEmpty()) {
- charinfo.m_Unicode = 0;
- m_TempCharList.push_back(charinfo);
- m_TempTextBuf.AppendChar(0xfffe);
- continue;
- } else {
- int nTotal = wstrItem.GetLength();
- bool bDel = false;
- const int count =
- std::min(pdfium::CollectionSize<int>(m_TempCharList), 7);
- FX_FLOAT threshold = charinfo.m_Matrix.TransformXDistance(
- (FX_FLOAT)TEXT_CHARRATIO_GAPDELTA * pTextObj->GetFontSize());
- for (int n = pdfium::CollectionSize<int>(m_TempCharList);
- n > pdfium::CollectionSize<int>(m_TempCharList) - count; n--) {
- const PAGECHAR_INFO& charinfo1 = m_TempCharList[n - 1];
- if (charinfo1.m_CharCode == charinfo.m_CharCode &&
- charinfo1.m_pTextObj->GetFont() == charinfo.m_pTextObj->GetFont() &&
- FXSYS_fabs(charinfo1.m_OriginX - charinfo.m_OriginX) < threshold &&
- FXSYS_fabs(charinfo1.m_OriginY - charinfo.m_OriginY) < threshold) {
- bDel = true;
- break;
- }
- }
- if (!bDel) {
- for (int nIndex = 0; nIndex < nTotal; nIndex++) {
- charinfo.m_Unicode = wstrItem.GetAt(nIndex);
- if (charinfo.m_Unicode) {
- charinfo.m_Index = m_TextBuf.GetLength();
- m_TempTextBuf.AppendChar(charinfo.m_Unicode);
- } else {
- m_TempTextBuf.AppendChar(0xfffe);
- }
- m_TempCharList.push_back(charinfo);
- }
- } else if (i == 0) {
- CFX_WideString str = m_TempTextBuf.MakeString();
- if (!str.IsEmpty() &&
- str.GetAt(str.GetLength() - 1) == TEXT_SPACE_CHAR) {
- m_TempTextBuf.Delete(m_TempTextBuf.GetLength() - 1, 1);
- m_TempCharList.pop_back();
- }
- }
- }
- }
- if (bIsBidiAndMirrorInverse)
- SwapTempTextBuf(iCharListStartAppend, iBufStartAppend);
-}
-
-CPDF_TextPage::TextOrientation CPDF_TextPage::GetTextObjectWritingMode(
- const CPDF_TextObject* pTextObj) const {
- int32_t nChars = pTextObj->CountChars();
- if (nChars == 1)
- return m_TextlineDir;
-
- CPDF_TextObjectItem first, last;
- pTextObj->GetCharInfo(0, &first);
- pTextObj->GetCharInfo(nChars - 1, &last);
- CFX_Matrix textMatrix;
- pTextObj->GetTextMatrix(&textMatrix);
- textMatrix.TransformPoint(first.m_OriginX, first.m_OriginY);
- textMatrix.TransformPoint(last.m_OriginX, last.m_OriginY);
- FX_FLOAT dX = FXSYS_fabs(last.m_OriginX - first.m_OriginX);
- FX_FLOAT dY = FXSYS_fabs(last.m_OriginY - first.m_OriginY);
- if (dX <= 0.0001f && dY <= 0.0001f)
- return TextOrientation::Unknown;
-
- CFX_VectorF v(dX, dY);
- v.Normalize();
- if (v.y <= 0.0872f)
- return v.x <= 0.0872f ? m_TextlineDir : TextOrientation::Horizontal;
-
- if (v.x <= 0.0872f)
- return TextOrientation::Vertical;
-
- return m_TextlineDir;
-}
-
-FX_BOOL CPDF_TextPage::IsHyphen(FX_WCHAR curChar) {
- CFX_WideString strCurText = m_TempTextBuf.MakeString();
- if (strCurText.IsEmpty())
- strCurText = m_TextBuf.AsStringC();
- FX_STRSIZE nCount = strCurText.GetLength();
- int nIndex = nCount - 1;
- FX_WCHAR wcTmp = strCurText.GetAt(nIndex);
- while (wcTmp == 0x20 && nIndex <= nCount - 1 && nIndex >= 0)
- wcTmp = strCurText.GetAt(--nIndex);
- if (0x2D == wcTmp || 0xAD == wcTmp) {
- if (--nIndex > 0) {
- FX_WCHAR preChar = strCurText.GetAt((nIndex));
- if (((preChar >= L'A' && preChar <= L'Z') ||
- (preChar >= L'a' && preChar <= L'z')) &&
- ((curChar >= L'A' && curChar <= L'Z') ||
- (curChar >= L'a' && curChar <= L'z'))) {
- return TRUE;
- }
- }
- const PAGECHAR_INFO* preInfo;
- if (!m_TempCharList.empty())
- preInfo = &m_TempCharList.back();
- else if (!m_CharList.empty())
- preInfo = &m_CharList.back();
- else
- return FALSE;
- if (FPDFTEXT_CHAR_PIECE == preInfo->m_Flag &&
- (0xAD == preInfo->m_Unicode || 0x2D == preInfo->m_Unicode)) {
- return TRUE;
- }
- }
- return FALSE;
-}
-
-CPDF_TextPage::GenerateCharacter CPDF_TextPage::ProcessInsertObject(
- const CPDF_TextObject* pObj,
- const CFX_Matrix& formMatrix) {
- FindPreviousTextObject();
- TextOrientation WritingMode = GetTextObjectWritingMode(pObj);
- if (WritingMode == TextOrientation::Unknown)
- WritingMode = GetTextObjectWritingMode(m_pPreTextObj);
-
- CFX_FloatRect this_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right,
- pObj->m_Top);
- CFX_FloatRect prev_rect(m_pPreTextObj->m_Left, m_pPreTextObj->m_Bottom,
- m_pPreTextObj->m_Right, m_pPreTextObj->m_Top);
- CPDF_TextObjectItem PrevItem, item;
- int nItem = m_pPreTextObj->CountItems();
- m_pPreTextObj->GetItemInfo(nItem - 1, &PrevItem);
- pObj->GetItemInfo(0, &item);
- CFX_WideString wstrItem =
- pObj->GetFont()->UnicodeFromCharCode(item.m_CharCode);
- if (wstrItem.IsEmpty())
- wstrItem += static_cast<FX_WCHAR>(item.m_CharCode);
- FX_WCHAR curChar = wstrItem.GetAt(0);
- if (WritingMode == TextOrientation::Horizontal) {
- if (this_rect.Height() > 4.5 && prev_rect.Height() > 4.5) {
- FX_FLOAT top =
- this_rect.top < prev_rect.top ? this_rect.top : prev_rect.top;
- FX_FLOAT bottom = this_rect.bottom > prev_rect.bottom ? this_rect.bottom
- : prev_rect.bottom;
- if (bottom >= top) {
- return IsHyphen(curChar) ? GenerateCharacter::Hyphen
- : GenerateCharacter::LineBreak;
- }
- }
- } else if (WritingMode == TextOrientation::Vertical) {
- if (this_rect.Width() > pObj->GetFontSize() * 0.1f &&
- prev_rect.Width() > m_pPreTextObj->GetFontSize() * 0.1f) {
- FX_FLOAT left = this_rect.left > m_CurlineRect.left ? this_rect.left
- : m_CurlineRect.left;
- FX_FLOAT right = this_rect.right < m_CurlineRect.right
- ? this_rect.right
- : m_CurlineRect.right;
- if (right <= left) {
- return IsHyphen(curChar) ? GenerateCharacter::Hyphen
- : GenerateCharacter::LineBreak;
- }
- }
- }
- FX_FLOAT last_pos = PrevItem.m_OriginX;
- int nLastWidth = GetCharWidth(PrevItem.m_CharCode, m_pPreTextObj->GetFont());
- FX_FLOAT last_width = nLastWidth * m_pPreTextObj->GetFontSize() / 1000;
- last_width = FXSYS_fabs(last_width);
- int nThisWidth = GetCharWidth(item.m_CharCode, pObj->GetFont());
- FX_FLOAT this_width = nThisWidth * pObj->GetFontSize() / 1000;
- this_width = FXSYS_fabs(this_width);
- FX_FLOAT threshold =
- last_width > this_width ? last_width / 4 : this_width / 4;
- CFX_Matrix prev_matrix, prev_reverse;
- m_pPreTextObj->GetTextMatrix(&prev_matrix);
- prev_matrix.Concat(m_perMatrix);
- prev_reverse.SetReverse(prev_matrix);
- FX_FLOAT x = pObj->GetPosX();
- FX_FLOAT y = pObj->GetPosY();
- formMatrix.Transform(x, y);
- prev_reverse.Transform(x, y);
- if (last_width < this_width)
- threshold = prev_reverse.TransformDistance(threshold);
- bool bNewline = false;
- if (WritingMode == TextOrientation::Horizontal) {
- CFX_FloatRect rect1(m_pPreTextObj->m_Left, pObj->m_Bottom,
- m_pPreTextObj->m_Right, pObj->m_Top);
- CFX_FloatRect rect2(m_pPreTextObj->m_Left, m_pPreTextObj->m_Bottom,
- m_pPreTextObj->m_Right, m_pPreTextObj->m_Top);
- CFX_FloatRect rect3 = rect1;
- rect1.Intersect(rect2);
- if ((rect1.IsEmpty() && rect2.Height() > 5 && rect3.Height() > 5) ||
- ((y > threshold * 2 || y < threshold * -3) &&
- (FXSYS_fabs(y) < 1 ? FXSYS_fabs(x) < FXSYS_fabs(y) : TRUE))) {
- bNewline = true;
- if (nItem > 1) {
- CPDF_TextObjectItem tempItem;
- m_pPreTextObj->GetItemInfo(0, &tempItem);
- CFX_Matrix m;
- m_pPreTextObj->GetTextMatrix(&m);
- if (PrevItem.m_OriginX > tempItem.m_OriginX &&
- m_DisplayMatrix.a > 0.9 && m_DisplayMatrix.b < 0.1 &&
- m_DisplayMatrix.c < 0.1 && m_DisplayMatrix.d < -0.9 && m.b < 0.1 &&
- m.c < 0.1) {
- CFX_FloatRect re(0, m_pPreTextObj->m_Bottom, 1000,
- m_pPreTextObj->m_Top);
- if (re.Contains(pObj->GetPosX(), pObj->GetPosY())) {
- bNewline = false;
- } else {
- CFX_FloatRect rect(0, pObj->m_Bottom, 1000, pObj->m_Top);
- if (rect.Contains(m_pPreTextObj->GetPosX(),
- m_pPreTextObj->GetPosY())) {
- bNewline = false;
- }
- }
- }
- }
- }
- }
- if (bNewline) {
- return IsHyphen(curChar) ? GenerateCharacter::Hyphen
- : GenerateCharacter::LineBreak;
- }
-
- int32_t nChars = pObj->CountChars();
- if (nChars == 1 && (0x2D == curChar || 0xAD == curChar) &&
- IsHyphen(curChar)) {
- return GenerateCharacter::Hyphen;
- }
- CFX_WideString PrevStr =
- m_pPreTextObj->GetFont()->UnicodeFromCharCode(PrevItem.m_CharCode);
- FX_WCHAR preChar = PrevStr.GetAt(PrevStr.GetLength() - 1);
- CFX_Matrix matrix;
- pObj->GetTextMatrix(&matrix);
- matrix.Concat(formMatrix);
- threshold = (FX_FLOAT)(nLastWidth > nThisWidth ? nLastWidth : nThisWidth);
- threshold = threshold > 400
- ? (threshold < 700
- ? threshold / 4
- : (threshold > 800 ? threshold / 6 : threshold / 5))
- : (threshold / 2);
- if (nLastWidth >= nThisWidth) {
- threshold *= FXSYS_fabs(m_pPreTextObj->GetFontSize());
- } else {
- threshold *= FXSYS_fabs(pObj->GetFontSize());
- threshold = matrix.TransformDistance(threshold);
- threshold = prev_reverse.TransformDistance(threshold);
- }
- threshold /= 1000;
- if ((threshold < 1.4881 && threshold > 1.4879) ||
- (threshold < 1.39001 && threshold > 1.38999)) {
- threshold *= 1.5;
- }
- if (FXSYS_fabs(last_pos + last_width - x) > threshold && curChar != L' ' &&
- preChar != L' ') {
- if (curChar != L' ' && preChar != L' ') {
- if ((x - last_pos - last_width) > threshold ||
- (last_pos - x - last_width) > threshold) {
- return GenerateCharacter::Space;
- }
- if (x < 0 && (last_pos - x - last_width) > threshold)
- return GenerateCharacter::Space;
- if ((x - last_pos - last_width) > this_width ||
- (x - last_pos - this_width) > last_width) {
- return GenerateCharacter::Space;
- }
- }
- }
- return GenerateCharacter::None;
-}
-
-FX_BOOL CPDF_TextPage::IsSameTextObject(CPDF_TextObject* pTextObj1,
- CPDF_TextObject* pTextObj2) {
- if (!pTextObj1 || !pTextObj2)
- return FALSE;
- CFX_FloatRect rcPreObj(pTextObj2->m_Left, pTextObj2->m_Bottom,
- pTextObj2->m_Right, pTextObj2->m_Top);
- CFX_FloatRect rcCurObj(pTextObj1->m_Left, pTextObj1->m_Bottom,
- pTextObj1->m_Right, pTextObj1->m_Top);
- if (rcPreObj.IsEmpty() && rcCurObj.IsEmpty()) {
- FX_FLOAT dbXdif = FXSYS_fabs(rcPreObj.left - rcCurObj.left);
- size_t nCount = m_CharList.size();
- if (nCount >= 2) {
- PAGECHAR_INFO perCharTemp = m_CharList[nCount - 2];
- FX_FLOAT dbSpace = perCharTemp.m_CharBox.Width();
- if (dbXdif > dbSpace)
- return FALSE;
- }
- }
- if (!rcPreObj.IsEmpty() || !rcCurObj.IsEmpty()) {
- rcPreObj.Intersect(rcCurObj);
- if (rcPreObj.IsEmpty())
- return FALSE;
- if (FXSYS_fabs(rcPreObj.Width() - rcCurObj.Width()) >
- rcCurObj.Width() / 2) {
- return FALSE;
- }
- if (pTextObj2->GetFontSize() != pTextObj1->GetFontSize())
- return FALSE;
- }
- int nPreCount = pTextObj2->CountItems();
- int nCurCount = pTextObj1->CountItems();
- if (nPreCount != nCurCount)
- return FALSE;
- // If both objects have no items, consider them same.
- if (!nPreCount)
- return TRUE;
-
- CPDF_TextObjectItem itemPer = {0, 0.0f, 0.0f};
- CPDF_TextObjectItem itemCur = {0, 0.0f, 0.0f};
- for (int i = 0; i < nPreCount; i++) {
- pTextObj2->GetItemInfo(i, &itemPer);
- pTextObj1->GetItemInfo(i, &itemCur);
- if (itemCur.m_CharCode != itemPer.m_CharCode)
- return FALSE;
- }
- if (FXSYS_fabs(pTextObj1->GetPosX() - pTextObj2->GetPosX()) >
- GetCharWidth(itemPer.m_CharCode, pTextObj2->GetFont()) *
- pTextObj2->GetFontSize() / 1000 * 0.9 ||
- FXSYS_fabs(pTextObj1->GetPosY() - pTextObj2->GetPosY()) >
- std::max(std::max(rcPreObj.Height(), rcPreObj.Width()),
- pTextObj2->GetFontSize()) /
- 8) {
- return FALSE;
- }
- return TRUE;
-}
-
-FX_BOOL CPDF_TextPage::IsSameAsPreTextObject(
- CPDF_TextObject* pTextObj,
- const CPDF_PageObjectList* pObjList,
- CPDF_PageObjectList::const_iterator iter) {
- int i = 0;
- while (i < 5 && iter != pObjList->begin()) {
- --iter;
- CPDF_PageObject* pOtherObj = iter->get();
- if (pOtherObj == pTextObj || !pOtherObj->IsText())
- continue;
- if (IsSameTextObject(pOtherObj->AsText(), pTextObj))
- return TRUE;
- ++i;
- }
- return FALSE;
-}
-
-FX_BOOL CPDF_TextPage::GenerateCharInfo(FX_WCHAR unicode, PAGECHAR_INFO& info) {
- const PAGECHAR_INFO* preChar;
- if (!m_TempCharList.empty())
- preChar = &m_TempCharList.back();
- else if (!m_CharList.empty())
- preChar = &m_CharList.back();
- else
- return FALSE;
- info.m_Index = m_TextBuf.GetLength();
- info.m_Unicode = unicode;
- info.m_pTextObj = nullptr;
- info.m_CharCode = CPDF_Font::kInvalidCharCode;
- info.m_Flag = FPDFTEXT_CHAR_GENERATED;
- int preWidth = 0;
- if (preChar->m_pTextObj && preChar->m_CharCode != -1) {
- preWidth =
- GetCharWidth(preChar->m_CharCode, preChar->m_pTextObj->GetFont());
- }
-
- FX_FLOAT fFontSize = preChar->m_pTextObj ? preChar->m_pTextObj->GetFontSize()
- : preChar->m_CharBox.Height();
- if (!fFontSize)
- fFontSize = kDefaultFontSize;
-
- info.m_OriginX = preChar->m_OriginX + preWidth * (fFontSize) / 1000;
- info.m_OriginY = preChar->m_OriginY;
- info.m_CharBox = CFX_FloatRect(info.m_OriginX, info.m_OriginY, info.m_OriginX,
- info.m_OriginY);
- return TRUE;
-}
-
-FX_BOOL CPDF_TextPage::IsRectIntersect(const CFX_FloatRect& rect1,
- const CFX_FloatRect& rect2) {
- CFX_FloatRect rect = rect1;
- rect.Intersect(rect2);
- return !rect.IsEmpty();
-}
-
-CPDF_TextPageFind::CPDF_TextPageFind(const CPDF_TextPage* pTextPage)
- : m_pTextPage(pTextPage),
- m_flags(0),
- m_findNextStart(-1),
- m_findPreStart(-1),
- m_bMatchCase(FALSE),
- m_bMatchWholeWord(FALSE),
- m_resStart(0),
- m_resEnd(-1),
- m_IsFind(FALSE) {
- m_strText = m_pTextPage->GetPageText();
- int nCount = pTextPage->CountChars();
- if (nCount) {
- m_CharIndex.push_back(0);
- }
- for (int i = 0; i < nCount; i++) {
- FPDF_CHAR_INFO info;
- pTextPage->GetCharInfo(i, &info);
- int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
- if (info.m_Flag == FPDFTEXT_CHAR_NORMAL ||
- info.m_Flag == FPDFTEXT_CHAR_GENERATED) {
- if (indexSize % 2) {
- m_CharIndex.push_back(1);
- } else {
- if (indexSize <= 0) {
- continue;
- }
- m_CharIndex[indexSize - 1] += 1;
- }
- } else {
- if (indexSize % 2) {
- if (indexSize <= 0) {
- continue;
- }
- m_CharIndex[indexSize - 1] = i + 1;
- } else {
- m_CharIndex.push_back(i + 1);
- }
- }
- }
- int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
- if (indexSize % 2) {
- m_CharIndex.erase(m_CharIndex.begin() + indexSize - 1);
- }
-}
-
-CPDF_TextPageFind::~CPDF_TextPageFind() {}
-
-int CPDF_TextPageFind::GetCharIndex(int index) const {
- return m_pTextPage->CharIndexFromTextIndex(index);
-}
-
-FX_BOOL CPDF_TextPageFind::FindFirst(const CFX_WideString& findwhat,
- int flags,
- int startPos) {
- if (!m_pTextPage) {
- return FALSE;
- }
- if (m_strText.IsEmpty() || m_bMatchCase != (flags & FPDFTEXT_MATCHCASE)) {
- m_strText = m_pTextPage->GetPageText();
- }
- CFX_WideString findwhatStr = findwhat;
- m_findWhat = findwhatStr;
- m_flags = flags;
- m_bMatchCase = flags & FPDFTEXT_MATCHCASE;
- if (m_strText.IsEmpty()) {
- m_IsFind = FALSE;
- return TRUE;
- }
- FX_STRSIZE len = findwhatStr.GetLength();
- if (!m_bMatchCase) {
- findwhatStr.MakeLower();
- m_strText.MakeLower();
- }
- m_bMatchWholeWord = flags & FPDFTEXT_MATCHWHOLEWORD;
- m_findNextStart = startPos;
- if (startPos == -1) {
- m_findPreStart = m_strText.GetLength() - 1;
- } else {
- m_findPreStart = startPos;
- }
- m_csFindWhatArray.clear();
- int i = 0;
- while (i < len) {
- if (findwhatStr.GetAt(i) != ' ') {
- break;
- }
- i++;
- }
- if (i < len) {
- ExtractFindWhat(findwhatStr);
- } else {
- m_csFindWhatArray.push_back(findwhatStr);
- }
- if (m_csFindWhatArray.empty()) {
- return FALSE;
- }
- m_IsFind = TRUE;
- m_resStart = 0;
- m_resEnd = -1;
- return TRUE;
-}
-
-FX_BOOL CPDF_TextPageFind::FindNext() {
- if (!m_pTextPage) {
- return FALSE;
- }
- m_resArray.clear();
- if (m_findNextStart == -1) {
- return FALSE;
- }
- if (m_strText.IsEmpty()) {
- m_IsFind = FALSE;
- return m_IsFind;
- }
- int strLen = m_strText.GetLength();
- if (m_findNextStart > strLen - 1) {
- m_IsFind = FALSE;
- return m_IsFind;
- }
- int nCount = pdfium::CollectionSize<int>(m_csFindWhatArray);
- int nResultPos = 0;
- int nStartPos = 0;
- nStartPos = m_findNextStart;
- FX_BOOL bSpaceStart = FALSE;
- for (int iWord = 0; iWord < nCount; iWord++) {
- CFX_WideString csWord = m_csFindWhatArray[iWord];
- if (csWord.IsEmpty()) {
- if (iWord == nCount - 1) {
- FX_WCHAR strInsert = m_strText.GetAt(nStartPos);
- if (strInsert == TEXT_LINEFEED_CHAR || strInsert == TEXT_SPACE_CHAR ||
- strInsert == TEXT_RETURN_CHAR || strInsert == 160) {
- nResultPos = nStartPos + 1;
- break;
- }
- iWord = -1;
- } else if (iWord == 0) {
- bSpaceStart = TRUE;
- }
- continue;
- }
- int endIndex;
- nResultPos = m_strText.Find(csWord.c_str(), nStartPos);
- if (nResultPos == -1) {
- m_IsFind = FALSE;
- return m_IsFind;
- }
- endIndex = nResultPos + csWord.GetLength() - 1;
- if (iWord == 0) {
- m_resStart = nResultPos;
- }
- FX_BOOL bMatch = TRUE;
- if (iWord != 0 && !bSpaceStart) {
- int PreResEndPos = nStartPos;
- int curChar = csWord.GetAt(0);
- CFX_WideString lastWord = m_csFindWhatArray[iWord - 1];
- int lastChar = lastWord.GetAt(lastWord.GetLength() - 1);
- if (nStartPos == nResultPos &&
- !(IsIgnoreSpaceCharacter(lastChar) ||
- IsIgnoreSpaceCharacter(curChar))) {
- bMatch = FALSE;
- }
- for (int d = PreResEndPos; d < nResultPos; d++) {
- FX_WCHAR strInsert = m_strText.GetAt(d);
- if (strInsert != TEXT_LINEFEED_CHAR && strInsert != TEXT_SPACE_CHAR &&
- strInsert != TEXT_RETURN_CHAR && strInsert != 160) {
- bMatch = FALSE;
- break;
- }
- }
- } else if (bSpaceStart) {
- if (nResultPos > 0) {
- FX_WCHAR strInsert = m_strText.GetAt(nResultPos - 1);
- if (strInsert != TEXT_LINEFEED_CHAR && strInsert != TEXT_SPACE_CHAR &&
- strInsert != TEXT_RETURN_CHAR && strInsert != 160) {
- bMatch = FALSE;
- m_resStart = nResultPos;
- } else {
- m_resStart = nResultPos - 1;
- }
- }
- }
- if (m_bMatchWholeWord && bMatch) {
- bMatch = IsMatchWholeWord(m_strText, nResultPos, endIndex);
- }
- nStartPos = endIndex + 1;
- if (!bMatch) {
- iWord = -1;
- if (bSpaceStart) {
- nStartPos = m_resStart + m_csFindWhatArray[1].GetLength();
- } else {
- nStartPos = m_resStart + m_csFindWhatArray[0].GetLength();
- }
- }
- }
- m_resEnd = nResultPos + m_csFindWhatArray.back().GetLength() - 1;
- m_IsFind = TRUE;
- int resStart = GetCharIndex(m_resStart);
- int resEnd = GetCharIndex(m_resEnd);
- m_resArray = m_pTextPage->GetRectArray(resStart, resEnd - resStart + 1);
- if (m_flags & FPDFTEXT_CONSECUTIVE) {
- m_findNextStart = m_resStart + 1;
- m_findPreStart = m_resEnd - 1;
- } else {
- m_findNextStart = m_resEnd + 1;
- m_findPreStart = m_resStart - 1;
- }
- return m_IsFind;
-}
-
-FX_BOOL CPDF_TextPageFind::FindPrev() {
- if (!m_pTextPage) {
- return FALSE;
- }
- m_resArray.clear();
- if (m_strText.IsEmpty() || m_findPreStart < 0) {
- m_IsFind = FALSE;
- return m_IsFind;
- }
- CPDF_TextPageFind findEngine(m_pTextPage);
- FX_BOOL ret = findEngine.FindFirst(m_findWhat, m_flags);
- if (!ret) {
- m_IsFind = FALSE;
- return m_IsFind;
- }
- int order = -1, MatchedCount = 0;
- while (ret) {
- ret = findEngine.FindNext();
- if (ret) {
- int order1 = findEngine.GetCurOrder();
- int MatchedCount1 = findEngine.GetMatchedCount();
- if (((order1 + MatchedCount1) - 1) > m_findPreStart) {
- break;
- }
- order = order1;
- MatchedCount = MatchedCount1;
- }
- }
- if (order == -1) {
- m_IsFind = FALSE;
- return m_IsFind;
- }
- m_resStart = m_pTextPage->TextIndexFromCharIndex(order);
- m_resEnd = m_pTextPage->TextIndexFromCharIndex(order + MatchedCount - 1);
- m_IsFind = TRUE;
- m_resArray = m_pTextPage->GetRectArray(order, MatchedCount);
- if (m_flags & FPDFTEXT_CONSECUTIVE) {
- m_findNextStart = m_resStart + 1;
- m_findPreStart = m_resEnd - 1;
- } else {
- m_findNextStart = m_resEnd + 1;
- m_findPreStart = m_resStart - 1;
- }
- return m_IsFind;
-}
-
-void CPDF_TextPageFind::ExtractFindWhat(const CFX_WideString& findwhat) {
- if (findwhat.IsEmpty()) {
- return;
- }
- int index = 0;
- while (1) {
- CFX_WideString csWord = TEXT_EMPTY;
- int ret =
- ExtractSubString(csWord, findwhat.c_str(), index, TEXT_SPACE_CHAR);
- if (csWord.IsEmpty()) {
- if (ret) {
- m_csFindWhatArray.push_back(L"");
- index++;
- continue;
- } else {
- break;
- }
- }
- int pos = 0;
- while (pos < csWord.GetLength()) {
- CFX_WideString curStr = csWord.Mid(pos, 1);
- FX_WCHAR curChar = csWord.GetAt(pos);
- if (IsIgnoreSpaceCharacter(curChar)) {
- if (pos > 0 && curChar == 0x2019) {
- pos++;
- continue;
- }
- if (pos > 0) {
- m_csFindWhatArray.push_back(csWord.Mid(0, pos));
- }
- m_csFindWhatArray.push_back(curStr);
- if (pos == csWord.GetLength() - 1) {
- csWord.clear();
- break;
- }
- csWord = csWord.Right(csWord.GetLength() - pos - 1);
- pos = 0;
- continue;
- }
- pos++;
- }
- if (!csWord.IsEmpty()) {
- m_csFindWhatArray.push_back(csWord);
- }
- index++;
- }
-}
-
-FX_BOOL CPDF_TextPageFind::IsMatchWholeWord(const CFX_WideString& csPageText,
- int startPos,
- int endPos) {
- FX_WCHAR char_left = 0;
- FX_WCHAR char_right = 0;
- int char_count = endPos - startPos + 1;
- if (char_count < 1) {
- return FALSE;
- }
- if (char_count == 1 && csPageText.GetAt(startPos) > 255) {
- return TRUE;
- }
- if (startPos - 1 >= 0) {
- char_left = csPageText.GetAt(startPos - 1);
- }
- if (startPos + char_count < csPageText.GetLength()) {
- char_right = csPageText.GetAt(startPos + char_count);
- }
- if ((char_left > 'A' && char_left < 'a') ||
- (char_left > 'a' && char_left < 'z') ||
- (char_left > 0xfb00 && char_left < 0xfb06) || std::iswdigit(char_left) ||
- (char_right > 'A' && char_right < 'a') ||
- (char_right > 'a' && char_right < 'z') ||
- (char_right > 0xfb00 && char_right < 0xfb06) ||
- std::iswdigit(char_right)) {
- return FALSE;
- }
- if (!(('A' > char_left || char_left > 'Z') &&
- ('a' > char_left || char_left > 'z') &&
- ('A' > char_right || char_right > 'Z') &&
- ('a' > char_right || char_right > 'z'))) {
- return FALSE;
- }
- if (char_count > 0) {
- if (csPageText.GetAt(startPos) >= L'0' &&
- csPageText.GetAt(startPos) <= L'9' && char_left >= L'0' &&
- char_left <= L'9') {
- return FALSE;
- }
- if (csPageText.GetAt(endPos) >= L'0' && csPageText.GetAt(endPos) <= L'9' &&
- char_right >= L'0' && char_right <= L'9') {
- return FALSE;
- }
- }
- return TRUE;
-}
-
-FX_BOOL CPDF_TextPageFind::ExtractSubString(CFX_WideString& rString,
- const FX_WCHAR* lpszFullString,
- int iSubString,
- FX_WCHAR chSep) {
- if (!lpszFullString) {
- return FALSE;
- }
- while (iSubString--) {
- lpszFullString = wcschr(lpszFullString, chSep);
- if (!lpszFullString) {
- rString.clear();
- return FALSE;
- }
- lpszFullString++;
- while (*lpszFullString == chSep) {
- lpszFullString++;
- }
- }
- const FX_WCHAR* lpchEnd = wcschr(lpszFullString, chSep);
- int nLen = lpchEnd ? (int)(lpchEnd - lpszFullString)
- : (int)FXSYS_wcslen(lpszFullString);
- ASSERT(nLen >= 0);
- FXSYS_memcpy(rString.GetBuffer(nLen), lpszFullString,
- nLen * sizeof(FX_WCHAR));
- rString.ReleaseBuffer();
- return TRUE;
-}
-
-CFX_WideString CPDF_TextPageFind::MakeReverse(const CFX_WideString& str) {
- CFX_WideString str2;
- str2.clear();
- int nlen = str.GetLength();
- for (int i = nlen - 1; i >= 0; i--) {
- str2 += str.GetAt(i);
- }
- return str2;
-}
-
-int CPDF_TextPageFind::GetCurOrder() const {
- return GetCharIndex(m_resStart);
-}
-
-int CPDF_TextPageFind::GetMatchedCount() const {
- int resStart = GetCharIndex(m_resStart);
- int resEnd = GetCharIndex(m_resEnd);
- return resEnd - resStart + 1;
-}
-
-CPDF_LinkExtract::CPDF_LinkExtract(const CPDF_TextPage* pTextPage)
- : m_pTextPage(pTextPage) {}
-
-CPDF_LinkExtract::~CPDF_LinkExtract() {
-}
-
-void CPDF_LinkExtract::ExtractLinks() {
- m_LinkArray.clear();
- if (!m_pTextPage->IsParsed())
- return;
-
- m_strPageText = m_pTextPage->GetPageText(0, -1);
- if (m_strPageText.IsEmpty())
- return;
-
- ParseLink();
-}
-
-void CPDF_LinkExtract::ParseLink() {
- int start = 0, pos = 0;
- int TotalChar = m_pTextPage->CountChars();
- while (pos < TotalChar) {
- FPDF_CHAR_INFO pageChar;
- m_pTextPage->GetCharInfo(pos, &pageChar);
- if (pageChar.m_Flag == FPDFTEXT_CHAR_GENERATED ||
- pageChar.m_Unicode == 0x20 || pos == TotalChar - 1) {
- int nCount = pos - start;
- if (pos == TotalChar - 1) {
- nCount++;
- }
- CFX_WideString strBeCheck;
- strBeCheck = m_pTextPage->GetPageText(start, nCount);
- if (strBeCheck.GetLength() > 5) {
- while (strBeCheck.GetLength() > 0) {
- FX_WCHAR ch = strBeCheck.GetAt(strBeCheck.GetLength() - 1);
- if (ch == L')' || ch == L',' || ch == L'>' || ch == L'.') {
- strBeCheck = strBeCheck.Mid(0, strBeCheck.GetLength() - 1);
- nCount--;
- } else {
- break;
- }
- }
- if (nCount > 5 &&
- (CheckWebLink(strBeCheck) || CheckMailLink(strBeCheck))) {
- m_LinkArray.push_back({start, nCount, strBeCheck});
- }
- }
- start = ++pos;
- } else {
- pos++;
- }
- }
-}
-
-bool CPDF_LinkExtract::CheckWebLink(CFX_WideString& strBeCheck) {
- CFX_WideString str = strBeCheck;
- str.MakeLower();
- if (str.Find(L"http://www.") != -1) {
- strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"http://www."));
- return true;
- }
- if (str.Find(L"http://") != -1) {
- strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"http://"));
- return true;
- }
- if (str.Find(L"https://www.") != -1) {
- strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"https://www."));
- return true;
- }
- if (str.Find(L"https://") != -1) {
- strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"https://"));
- return true;
- }
- if (str.Find(L"www.") != -1) {
- strBeCheck = strBeCheck.Right(str.GetLength() - str.Find(L"www."));
- strBeCheck = L"http://" + strBeCheck;
- return true;
- }
- return false;
-}
-
-bool CPDF_LinkExtract::CheckMailLink(CFX_WideString& str) {
- int aPos = str.Find(L'@');
- // Invalid when no '@'.
- if (aPos < 1)
- return false;
-
- // Check the local part.
- int pPos = aPos; // Used to track the position of '@' or '.'.
- for (int i = aPos - 1; i >= 0; i--) {
- FX_WCHAR ch = str.GetAt(i);
- if (ch == L'_' || ch == L'-' || FXSYS_iswalnum(ch))
- continue;
-
- if (ch != L'.' || i == pPos - 1 || i == 0) {
- if (i == aPos - 1) {
- // There is '.' or invalid char before '@'.
- return FALSE;
- }
- // End extracting for other invalid chars, '.' at the beginning, or
- // consecutive '.'.
- int removed_len = i == pPos - 1 ? i + 2 : i + 1;
- str = str.Right(str.GetLength() - removed_len);
- break;
- }
- // Found a valid '.'.
- pPos = i;
- }
-
- // Check the domain name part.
- aPos = str.Find(L'@');
- if (aPos < 1)
- return false;
-
- str.TrimRight(L'.');
- // At least one '.' in domain name, but not at the beginning.
- // TODO(weili): RFC5322 allows domain names to be a local name without '.'.
- // Check whether we should remove this check.
- int ePos = str.Find(L'.', aPos + 1);
- if (ePos == -1 || ePos == aPos + 1)
- return false;
-
- // Validate all other chars in domain name.
- int nLen = str.GetLength();
- pPos = 0; // Used to track the position of '.'.
- for (int i = aPos + 1; i < nLen; i++) {
- FX_WCHAR wch = str.GetAt(i);
- if (wch == L'-' || FXSYS_iswalnum(wch))
- continue;
-
- if (wch != L'.' || i == pPos + 1) {
- // Domain name should end before invalid char.
- int host_end = i == pPos + 1 ? i - 2 : i - 1;
- if (pPos > 0 && host_end - aPos >= 3) {
- // Trim the ending invalid chars if there is at least one '.' and name.
- str = str.Left(host_end + 1);
- break;
- }
- return false;
- }
- pPos = i;
- }
-
- if (str.Find(L"mailto:") == -1)
- str = L"mailto:" + str;
-
- return true;
-}
-
-CFX_WideString CPDF_LinkExtract::GetURL(size_t index) const {
- return index < m_LinkArray.size() ? m_LinkArray[index].m_strUrl : L"";
-}
-
-std::vector<CFX_FloatRect> CPDF_LinkExtract::GetRects(size_t index) const {
- if (index >= m_LinkArray.size())
- return std::vector<CFX_FloatRect>();
-
- return m_pTextPage->GetRectArray(m_LinkArray[index].m_Start,
- m_LinkArray[index].m_Count);
-}
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