diff options
Diffstat (limited to 'core/src/fpdftext/fpdf_text_int.cpp')
-rw-r--r-- | core/src/fpdftext/fpdf_text_int.cpp | 2501 |
1 files changed, 0 insertions, 2501 deletions
diff --git a/core/src/fpdftext/fpdf_text_int.cpp b/core/src/fpdftext/fpdf_text_int.cpp deleted file mode 100644 index 16e2c8529b..0000000000 --- a/core/src/fpdftext/fpdf_text_int.cpp +++ /dev/null @@ -1,2501 +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 "core/src/fpdftext/text_int.h" - -#include <algorithm> -#include <cctype> -#include <cwctype> -#include <memory> -#include <utility> -#include <vector> - -#include "core/include/fpdfapi/cpdf_dictionary.h" -#include "core/include/fpdfapi/cpdf_string.h" -#include "core/include/fpdfapi/fpdf_module.h" -#include "core/include/fpdfapi/fpdf_page.h" -#include "core/include/fpdfapi/fpdf_pageobj.h" -#include "core/include/fpdfapi/fpdf_resource.h" -#include "core/include/fpdftext/fpdf_text.h" -#include "core/include/fxcrt/fx_bidi.h" -#include "core/include/fxcrt/fx_ext.h" -#include "core/include/fxcrt/fx_ucd.h" -#include "third_party/base/stl_util.h" - -namespace { - -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) { - FX_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 == (FX_DWORD)-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; -} - -const FX_FLOAT kDefaultFontSize = 1.0f; - -} // namespace - -IPDF_TextPage* IPDF_TextPage::CreateTextPage(const CPDF_Page* pPage, - int flags) { - return new CPDF_TextPage(pPage, flags); -} - -IPDF_TextPageFind* IPDF_TextPageFind::CreatePageFind( - const IPDF_TextPage* pTextPage) { - return pTextPage ? new CPDF_TextPageFind(pTextPage) : nullptr; -} - -IPDF_LinkExtract* IPDF_LinkExtract::CreateLinkExtract() { - return new CPDF_LinkExtract(); -} - -#define TEXT_BLANK_CHAR L' ' -#define TEXT_LINEFEED_CHAR L'\n' -#define TEXT_RETURN_CHAR L'\r' -#define TEXT_EMPTY L"" -#define TEXT_BLANK L" " -#define TEXT_RETURN_LINEFEED L"\r\n" -#define TEXT_LINEFEED L"\n" -#define TEXT_CHARRATIO_GAPDELTA 0.070 - -CPDF_TextPage::CPDF_TextPage(const CPDF_Page* pPage, int flags) - : m_pPage(pPage), - m_parserflag(flags), - m_pPreTextObj(nullptr), - m_bIsParsed(false), - m_TextlineDir(-1), - m_CurlineRect(0, 0, 0, 0) { - m_TextBuf.EstimateSize(0, 10240); - pPage->GetDisplayMatrix(m_DisplayMatrix, 0, 0, (int)pPage->GetPageWidth(), - (int)pPage->GetPageHeight(), 0); -} - -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 = NULL; - 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); - FX_BOOL bNormal = FALSE; - const PAGECHAR_INFO& charinfo = m_CharList[i]; - if (charinfo.m_Flag == FPDFTEXT_CHAR_GENERATED) { - bNormal = TRUE; - } else if (charinfo.m_Unicode == 0 || IsControlChar(charinfo)) { - bNormal = FALSE; - } else { - bNormal = TRUE; - } - if (bNormal) { - 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; -} - -void CPDF_TextPage::GetRectArray(int start, - int nCount, - CFX_RectArray& rectArray) const { - if (start < 0 || nCount == 0) { - return; - } - if (!m_bIsParsed) { - return; - } - CPDF_TextObject* pCurObj = NULL; - CFX_FloatRect rect; - int curPos = start; - FX_BOOL flagNewRect = TRUE; - if (nCount + start > pdfium::CollectionSize<int>(m_CharList) || - nCount == -1) { - nCount = pdfium::CollectionSize<int>(m_CharList) - start; - } - 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.Add(rect); - pCurObj = info_curchar.m_pTextObj; - flagNewRect = TRUE; - } - if (flagNewRect) { - 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; - } - flagNewRect = FALSE; - rect = info_curchar.m_CharBox; - rect.Normalize(); - } else { - info_curchar.m_CharBox.Normalize(); - if (rect.left > info_curchar.m_CharBox.left) { - rect.left = info_curchar.m_CharBox.left; - } - if (rect.right < info_curchar.m_CharBox.right) { - rect.right = info_curchar.m_CharBox.right; - } - if (rect.top < info_curchar.m_CharBox.top) { - rect.top = info_curchar.m_CharBox.top; - } - if (rect.bottom > info_curchar.m_CharBox.bottom) { - rect.bottom = info_curchar.m_CharBox.bottom; - } - } - } - rectArray.Add(rect); -} - -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.GetLength() > 0) { - 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; -} - -void CPDF_TextPage::GetRectsArrayByRect(const CFX_FloatRect& rect, - CFX_RectArray& resRectArray) const { - if (!m_bIsParsed) - return; - - CFX_FloatRect curRect; - bool flagNewRect = true; - CPDF_TextObject* pCurObj = nullptr; - for (auto info_curchar : m_CharList) { - if (info_curchar.m_Flag == FPDFTEXT_CHAR_GENERATED) { - continue; - } - if (!IsRectIntersect(rect, info_curchar.m_CharBox)) { - continue; - } - if (!pCurObj) { - pCurObj = info_curchar.m_pTextObj; - } - if (pCurObj != info_curchar.m_pTextObj) { - resRectArray.Add(curRect); - pCurObj = info_curchar.m_pTextObj; - flagNewRect = true; - } - if (flagNewRect) { - curRect = info_curchar.m_CharBox; - curRect.Normalize(); - flagNewRect = false; - } else { - info_curchar.m_CharBox.Normalize(); - curRect.left = std::min(curRect.left, info_curchar.m_CharBox.left); - curRect.bottom = std::min(curRect.bottom, info_curchar.m_CharBox.bottom); - curRect.right = std::max(curRect.right, info_curchar.m_CharBox.right); - curRect.top = std::max(curRect.top, info_curchar.m_CharBox.top); - } - } - resRectArray.Add(curRect); -} - -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 m_TextBuf.GetWideString().Mid(start, - m_TextBuf.GetWideString().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 m_TextBuf.GetWideString().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.RemoveAll(); - GetRectArray(start, nCount, m_SelRects); - return m_SelRects.GetSize(); -} - -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 >= m_SelRects.GetSize()) - return; - - left = m_SelRects.GetAt(rectIndex).left; - top = m_SelRects.GetAt(rectIndex).top; - right = m_SelRects.GetAt(rectIndex).right; - bottom = m_SelRects.GetAt(rectIndex).bottom; -} - -FX_BOOL CPDF_TextPage::GetBaselineRotate(int start, int end, int& Rotate) { - if (end == start) { - return FALSE; - } - FPDF_CHAR_INFO info_start; - FPDF_CHAR_INFO info_end; - GetCharInfo(start, &info_start); - GetCharInfo(end, &info_end); - while (info_end.m_CharBox.Width() == 0 || info_end.m_CharBox.Height() == 0) { - if (--end <= start) - return FALSE; - - GetCharInfo(end, &info_end); - } - FX_FLOAT dx = (info_end.m_OriginX - info_start.m_OriginX); - FX_FLOAT dy = (info_end.m_OriginY - info_start.m_OriginY); - if (dx == 0) { - if (dy > 0) { - Rotate = 90; - } else if (dy < 0) { - Rotate = 270; - } else { - Rotate = 0; - } - } else { - float a = FXSYS_atan2(dy, dx); - Rotate = (int)(a * 180 / FX_PI + 0.5); - } - if (Rotate < 0) { - Rotate = -Rotate; - } else if (Rotate > 0) { - Rotate = 360 - Rotate; - } - return TRUE; -} - -FX_BOOL CPDF_TextPage::GetBaselineRotate(const CFX_FloatRect& rect, - int& Rotate) { - int start, end, count, - n = CountBoundedSegments(rect.left, rect.top, rect.right, rect.bottom, - TRUE); - if (n < 1) { - return FALSE; - } - if (n > 1) { - GetBoundedSegment(n - 1, start, count); - end = start + count - 1; - GetBoundedSegment(0, start, count); - } else { - GetBoundedSegment(0, start, count); - end = start + count - 1; - } - return GetBaselineRotate(start, end, Rotate); -} -FX_BOOL CPDF_TextPage::GetBaselineRotate(int rectIndex, int& Rotate) { - if (!m_bIsParsed) - return FALSE; - - if (rectIndex < 0 || rectIndex >= m_SelRects.GetSize()) - return FALSE; - - CFX_FloatRect rect = m_SelRects.GetAt(rectIndex); - return GetBaselineRotate(rect, Rotate); -} - -int CPDF_TextPage::CountBoundedSegments(FX_FLOAT left, - FX_FLOAT top, - FX_FLOAT right, - FX_FLOAT bottom, - FX_BOOL bContains) { - m_Segments.RemoveAll(); - if (!m_bIsParsed) - return -1; - - CFX_FloatRect rect(left, bottom, right, top); - rect.Normalize(); - - FPDF_SEGMENT segment; - segment.m_Start = 0; - segment.m_nCount = 0; - - int pos = 0; - int segmentStatus = 0; - FX_BOOL IsContainPreChar = FALSE; - for (const auto& charinfo : m_CharList) { - if (bContains && rect.Contains(charinfo.m_CharBox)) { - if (segmentStatus == 0 || segmentStatus == 2) { - segment.m_Start = pos; - segment.m_nCount = 1; - segmentStatus = 1; - } else if (segmentStatus == 1) { - segment.m_nCount++; - } - IsContainPreChar = TRUE; - } else if (!bContains && - (IsRectIntersect(rect, charinfo.m_CharBox) || - rect.Contains(charinfo.m_OriginX, charinfo.m_OriginY))) { - if (segmentStatus == 0 || segmentStatus == 2) { - segment.m_Start = pos; - segment.m_nCount = 1; - segmentStatus = 1; - } else if (segmentStatus == 1) { - segment.m_nCount++; - } - IsContainPreChar = TRUE; - } else if (charinfo.m_Unicode == 32) { - if (IsContainPreChar == TRUE) { - if (segmentStatus == 0 || segmentStatus == 2) { - segment.m_Start = pos; - segment.m_nCount = 1; - segmentStatus = 1; - } else if (segmentStatus == 1) { - segment.m_nCount++; - } - IsContainPreChar = FALSE; - } else { - if (segmentStatus == 1) { - segmentStatus = 2; - m_Segments.Add(segment); - segment.m_Start = 0; - segment.m_nCount = 0; - } - } - } else { - if (segmentStatus == 1) { - segmentStatus = 2; - m_Segments.Add(segment); - segment.m_Start = 0; - segment.m_nCount = 0; - } - IsContainPreChar = FALSE; - } - pos++; - } - if (segmentStatus == 1) { - segmentStatus = 2; - m_Segments.Add(segment); - segment.m_Start = 0; - segment.m_nCount = 0; - } - return m_Segments.GetSize(); -} - -void CPDF_TextPage::GetBoundedSegment(int index, int& start, int& count) const { - if (index < 0 || index >= m_Segments.GetSize()) { - return; - } - start = m_Segments.GetAt(index).m_Start; - count = m_Segments.GetAt(index).m_nCount; -} - -int CPDF_TextPage::GetWordBreak(int index, int direction) const { - if (!m_bIsParsed) - return -1; - - if (direction != FPDFTEXT_LEFT && direction != FPDFTEXT_RIGHT) - return -1; - - if (index < 0 || index >= pdfium::CollectionSize<int>(m_CharList)) - return -1; - - const PAGECHAR_INFO& charinfo = m_CharList[index]; - if (charinfo.m_Index == -1 || charinfo.m_Flag == FPDFTEXT_CHAR_GENERATED) { - return index; - } - if (!IsLetter(charinfo.m_Unicode)) { - return index; - } - int breakPos = index; - if (direction == FPDFTEXT_LEFT) { - while (--breakPos > 0) { - if (!IsLetter(m_CharList[breakPos].m_Unicode)) - break; - } - } else if (direction == FPDFTEXT_RIGHT) { - while (++breakPos < pdfium::CollectionSize<int>(m_CharList)) { - if (!IsLetter(m_CharList[breakPos].m_Unicode)) - break; - } - } - return breakPos; -} - -int32_t CPDF_TextPage::FindTextlineFlowDirection() { - const int32_t nPageWidth = static_cast<int32_t>(m_pPage->GetPageWidth()); - const int32_t nPageHeight = static_cast<int32_t>(m_pPage->GetPageHeight()); - std::vector<uint8_t> nHorizontalMask(nPageWidth); - std::vector<uint8_t> nVerticalMask(nPageHeight); - uint8_t* pDataH = nHorizontalMask.data(); - uint8_t* pDataV = nVerticalMask.data(); - int32_t index = 0; - FX_FLOAT fLineHeight = 0.0f; - if (m_pPage->GetPageObjectList()->empty()) - return -1; - - for (auto& pPageObj : *m_pPage->GetPageObjectList()) { - if (!pPageObj || !pPageObj->IsText()) - continue; - - int32_t minH = - (int32_t)pPageObj->m_Left < 0 ? 0 : (int32_t)pPageObj->m_Left; - int32_t maxH = (int32_t)pPageObj->m_Right > nPageWidth - ? nPageWidth - : (int32_t)pPageObj->m_Right; - int32_t minV = - (int32_t)pPageObj->m_Bottom < 0 ? 0 : (int32_t)pPageObj->m_Bottom; - int32_t maxV = (int32_t)pPageObj->m_Top > nPageHeight - ? nPageHeight - : (int32_t)pPageObj->m_Top; - if (minH >= maxH || minV >= maxV) - continue; - - FXSYS_memset(pDataH + minH, 1, maxH - minH); - FXSYS_memset(pDataV + minV, 1, maxV - minV); - if (fLineHeight <= 0.0f) - fLineHeight = pPageObj->m_Top - pPageObj->m_Bottom; - } - int32_t nStartH = 0; - int32_t nEndH = 0; - FX_FLOAT nSumH = 0.0f; - for (index = 0; index < nPageWidth; index++) { - if (1 == nHorizontalMask[index]) - break; - } - nStartH = index; - for (index = nPageWidth; index > 0; index--) { - if (1 == nHorizontalMask[index - 1]) - break; - } - nEndH = index; - for (index = nStartH; index < nEndH; index++) { - nSumH += nHorizontalMask[index]; - } - nSumH /= nEndH - nStartH; - int32_t nStartV = 0; - int32_t nEndV = 0; - FX_FLOAT nSumV = 0.0f; - for (index = 0; index < nPageHeight; index++) { - if (1 == nVerticalMask[index]) - break; - } - nStartV = index; - for (index = nPageHeight; index > 0; index--) { - if (1 == nVerticalMask[index - 1]) - break; - } - nEndV = index; - for (index = nStartV; index < nEndV; index++) { - nSumV += nVerticalMask[index]; - } - nSumV /= nEndV - nStartV; - if ((nEndV - nStartV) < (int32_t)(2 * fLineHeight)) { - return 0; - } - if ((nEndH - nStartH) < (int32_t)(2 * fLineHeight)) { - return 1; - } - if (nSumH > 0.8f) { - return 0; - } - if (nSumH - nSumV > 0.0f) { - return 0; - } - if (nSumV - nSumH > 0.0f) { - return 1; - } - return -1; -} - -void CPDF_TextPage::ProcessObject() { - if (m_pPage->GetPageObjectList()->empty()) - return; - - m_TextlineDir = FindTextlineFlowDirection(); - 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(FX_DWORD charCode, CPDF_Font* pFont) const { - if (charCode == -1) - return 0; - - if (int w = pFont->GetCharWidthF(charCode)) - return w; - - CFX_ByteString str; - pFont->AppendChar(str, charCode); - if (int w = pFont->GetStringWidth(str, 1)) - return w; - - return pFont->GetCharBBox(charCode).Width(); -} - -void CPDF_TextPage::OnPiece(CFX_BidiChar* pBidi, CFX_WideString& str) { - CFX_BidiChar::Segment seg = pBidi->GetSegmentInfo(); - if (seg.direction == CFX_BidiChar::RIGHT) { - for (int i = seg.start + seg.count; i > seg.start; i--) { - m_TextBuf.AppendChar(str.GetAt(i - i)); - m_CharList.push_back(m_TempCharList[i - 1]); - } - } else { - for (int i = seg.start; i < seg.start + seg.count; i++) { - m_TextBuf.AppendChar(str.GetAt(i)); - m_CharList.push_back(m_TempCharList[i]); - } - } -} - -void CPDF_TextPage::AddCharInfoByLRDirection(FX_WCHAR wChar, - PAGECHAR_INFO info) { - if (!IsControlChar(info)) { - info.m_Index = m_TextBuf.GetLength(); - if (wChar >= 0xFB00 && wChar <= 0xFB06) { - FX_WCHAR* pDst = NULL; - FX_STRSIZE nCount = FX_Unicode_GetNormalization(wChar, pDst); - if (nCount >= 1) { - pDst = FX_Alloc(FX_WCHAR, nCount); - FX_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); - } else { - info.m_Index = -1; - } - m_CharList.push_back(info); -} - -void CPDF_TextPage::AddCharInfoByRLDirection(FX_WCHAR wChar, - PAGECHAR_INFO info) { - if (!IsControlChar(info)) { - info.m_Index = m_TextBuf.GetLength(); - wChar = FX_GetMirrorChar(wChar, TRUE, FALSE); - FX_WCHAR* pDst = NULL; - FX_STRSIZE nCount = FX_Unicode_GetNormalization(wChar, pDst); - if (nCount >= 1) { - pDst = FX_Alloc(FX_WCHAR, nCount); - FX_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); - } else { - info.m_Index = -1; - } - m_CharList.push_back(info); -} - -void CPDF_TextPage::CloseTempLine() { - if (m_TempCharList.empty()) - return; - - CFX_WideString str = m_TempTextBuf.GetWideString(); - FX_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_RLTB) - 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_Obj = m_LineObj.GetAt(i); - CFX_Matrix prev_matrix; - prev_Obj.m_pTextObj->GetTextMatrix(&prev_matrix); - 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); - 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); - } -} - -int32_t CPDF_TextPage::PreMarkedContent(PDFTEXT_Obj Obj) { - CPDF_TextObject* pTextObj = Obj.m_pTextObj; - CPDF_ContentMarkData* pMarkData = - (CPDF_ContentMarkData*)pTextObj->m_ContentMark.GetObject(); - if (!pMarkData) - return FPDFTEXT_MC_PASS; - - int nContentMark = pMarkData->CountItems(); - if (nContentMark < 1) - return FPDFTEXT_MC_PASS; - CFX_WideString actText; - FX_BOOL bExist = FALSE; - CPDF_Dictionary* pDict = NULL; - int n = 0; - for (n = 0; n < nContentMark; n++) { - CPDF_ContentMarkItem& item = pMarkData->GetItem(n); - if (item.GetParamType() == CPDF_ContentMarkItem::ParamType::None) - continue; - pDict = item.GetParam(); - CPDF_String* temp = - ToString(pDict ? pDict->GetElement("ActualText") : nullptr); - if (temp) { - bExist = TRUE; - actText = temp->GetUnicodeText(); - } - } - if (!bExist) - return FPDFTEXT_MC_PASS; - - if (m_pPreTextObj) { - CPDF_ContentMarkData* pPreMarkData = - (CPDF_ContentMarkData*)m_pPreTextObj->m_ContentMark.GetObject(); - if (pPreMarkData && pPreMarkData->CountItems() == n && - pDict == pPreMarkData->GetItem(n - 1).GetParam()) { - return FPDFTEXT_MC_DONE; - } - } - FX_STRSIZE nItems = actText.GetLength(); - if (nItems < 1) - return FPDFTEXT_MC_PASS; - - CPDF_Font* pFont = pTextObj->GetFont(); - bExist = FALSE; - for (FX_STRSIZE i = 0; i < nItems; i++) { - if (pFont->CharCodeFromUnicode(actText.GetAt(i)) != -1) { - bExist = TRUE; - break; - } - } - if (!bExist) - return FPDFTEXT_MC_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_MC_DONE; - - return FPDFTEXT_MC_DELAY; -} - -void CPDF_TextPage::ProcessMarkedContent(PDFTEXT_Obj Obj) { - CPDF_TextObject* pTextObj = Obj.m_pTextObj; - CPDF_ContentMarkData* pMarkData = - (CPDF_ContentMarkData*)pTextObj->m_ContentMark.GetObject(); - if (!pMarkData) - return; - - int nContentMark = pMarkData->CountItems(); - if (nContentMark < 1) - return; - CFX_WideString actText; - CPDF_Dictionary* pDict = NULL; - for (int n = 0; n < nContentMark; n++) { - 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 == (FX_DWORD)-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); - int32_t bPreMKC = PreMarkedContent(Obj); - if (FPDFTEXT_MC_DONE == bPreMKC) { - m_pPreTextObj = pTextObj; - m_perMatrix.Copy(formMatrix); - return; - } - int result = 0; - if (m_pPreTextObj) { - result = ProcessInsertObject(pTextObj, formMatrix); - if (2 == result) { - 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)); - } - PAGECHAR_INFO generateChar; - if (result == 1) { - if (GenerateCharInfo(TEXT_BLANK_CHAR, generateChar)) { - if (!formMatrix.IsIdentity()) { - generateChar.m_Matrix.Copy(formMatrix); - } - m_TempTextBuf.AppendChar(TEXT_BLANK_CHAR); - m_TempCharList.push_back(generateChar); - } - } else if (result == 2) { - CloseTempLine(); - if (m_TextBuf.GetSize()) { - if (GenerateCharInfo(TEXT_RETURN_CHAR, generateChar)) { - m_TextBuf.AppendChar(TEXT_RETURN_CHAR); - if (!formMatrix.IsIdentity()) { - generateChar.m_Matrix.Copy(formMatrix); - } - m_CharList.push_back(generateChar); - } - if (GenerateCharInfo(TEXT_LINEFEED_CHAR, generateChar)) { - m_TextBuf.AppendChar(TEXT_LINEFEED_CHAR); - if (!formMatrix.IsIdentity()) { - generateChar.m_Matrix.Copy(formMatrix); - } - m_CharList.push_back(generateChar); - } - } - } else if (result == 3) { - int32_t nChars = pTextObj->CountChars(); - if (nChars == 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 (0x2D == curChar || 0xAD == curChar) { - return; - } - } - while (m_TempTextBuf.GetSize() > 0 && - m_TempTextBuf.GetWideString().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); - } - } 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 (FPDFTEXT_MC_DELAY == bPreMKC) { - 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 == (FX_DWORD)-1) { - CFX_WideString str = m_TempTextBuf.GetWideString(); - if (str.IsEmpty()) { - str = m_TextBuf.GetWideString(); - } - if (str.IsEmpty() || str.GetAt(str.GetLength() - 1) == TEXT_BLANK_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(); - FX_DWORD space_charcode = pFont->CharCodeFromUnicode(' '); - FX_FLOAT threshold = 0; - if (space_charcode != -1) { - 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_BLANK_CHAR; - charinfo.m_Flag = FPDFTEXT_CHAR_GENERATED; - charinfo.m_pTextObj = pTextObj; - charinfo.m_Index = m_TextBuf.GetLength(); - m_TempTextBuf.AppendChar(TEXT_BLANK_CHAR); - charinfo.m_CharCode = -1; - 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 == (FX_DWORD)-1) { - continue; - } - } - spacing = 0; - CFX_WideString wstrItem = pFont->UnicodeFromCharCode(item.m_CharCode); - FX_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(); - FX_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.GetWideString(); - if (!str.IsEmpty() && - str.GetAt(str.GetLength() - 1) == TEXT_BLANK_CHAR) { - m_TempTextBuf.Delete(m_TempTextBuf.GetLength() - 1, 1); - m_TempCharList.pop_back(); - } - } - } - } - if (bIsBidiAndMirrorInverse) { - SwapTempTextBuf(iCharListStartAppend, iBufStartAppend); - } -} - -int32_t CPDF_TextPage::GetTextObjectWritingMode( - const CPDF_TextObject* pTextObj) { - 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 -1; - } - CFX_VectorF v(dX, dY); - v.Normalize(); - if (v.y <= 0.0872f) { - return v.x <= 0.0872f ? m_TextlineDir : 0; - } - if (v.x <= 0.0872f) { - return 1; - } - return m_TextlineDir; -} -FX_BOOL CPDF_TextPage::IsHyphen(FX_WCHAR curChar) { - CFX_WideString strCurText = m_TempTextBuf.GetWideString(); - if (strCurText.GetLength() == 0) { - strCurText = m_TextBuf.GetWideString(); - } - 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; -} - -int CPDF_TextPage::ProcessInsertObject(const CPDF_TextObject* pObj, - const CFX_Matrix& formMatrix) { - FindPreviousTextObject(); - FX_BOOL bNewline = FALSE; - int WritingMode = GetTextObjectWritingMode(pObj); - if (WritingMode == -1) { - 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 += (FX_WCHAR)item.m_CharCode; - } - FX_WCHAR curChar = wstrItem.GetAt(0); - if (WritingMode == 0) { - 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) { - if (IsHyphen(curChar)) { - return 3; - } - return 2; - } - } - } else if (WritingMode == 1) { - 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) { - if (IsHyphen(curChar)) { - return 3; - } - return 2; - } - } - } - 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); - } - 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 (WritingMode == 0) { - 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 re(0, pObj->m_Bottom, 1000, pObj->m_Top); - if (re.Contains(m_pPreTextObj->GetPosX(), - m_pPreTextObj->GetPosY())) { - bNewline = FALSE; - } - } - } - } - } - } - if (bNewline) - return IsHyphen(curChar) ? 3 : 2; - - int32_t nChars = pObj->CountChars(); - if (nChars == 1 && (0x2D == curChar || 0xAD == curChar) && - IsHyphen(curChar)) { - return 3; - } - 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 1; - } - if (x < 0 && (last_pos - x - last_width) > threshold) { - return 1; - } - if ((x - last_pos - last_width) > this_width || - (x - last_pos - this_width) > last_width) { - return 1; - } - } - } - return 0; -} - -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; - } - CPDF_TextObjectItem itemPer, itemCur; - 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 = NULL; - info.m_CharCode = -1; - info.m_Flag = FPDFTEXT_CHAR_GENERATED; - int preWidth = 0; - if (preChar->m_pTextObj && preChar->m_CharCode != (FX_DWORD)-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(); -} - -FX_BOOL CPDF_TextPage::IsLetter(FX_WCHAR unicode) { - if (unicode < L'A') { - return FALSE; - } - if (unicode > L'Z' && unicode < L'a') { - return FALSE; - } - if (unicode > L'z') { - return FALSE; - } - return TRUE; -} - -CPDF_TextPageFind::CPDF_TextPageFind(const IPDF_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 == CHAR_NORMAL || info.m_Flag == 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); - } -} - -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.RemoveAll(); - 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_BLANK_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_BLANK_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_BLANK_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_pTextPage->GetRectArray(resStart, resEnd - resStart + 1, m_resArray); - 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.RemoveAll(); - 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_pTextPage->GetRectArray(order, MatchedCount, m_resArray); - 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_BLANK_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.Empty(); - 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 = FXSYS_wcschr(lpszFullString, chSep); - if (!lpszFullString) { - rString.Empty(); - return FALSE; - } - lpszFullString++; - while (*lpszFullString == chSep) { - lpszFullString++; - } - } - const FX_WCHAR* lpchEnd = FXSYS_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.Empty(); - int nlen = str.GetLength(); - for (int i = nlen - 1; i >= 0; i--) { - str2 += str.GetAt(i); - } - return str2; -} - -void CPDF_TextPageFind::GetRectArray(CFX_RectArray& rects) const { - rects.Copy(m_resArray); -} - -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() - : m_pTextPage(nullptr), m_bIsParsed(false) { -} - -CPDF_LinkExtract::~CPDF_LinkExtract() { - DeleteLinkList(); -} - -FX_BOOL CPDF_LinkExtract::ExtractLinks(const IPDF_TextPage* pTextPage) { - if (!pTextPage || !pTextPage->IsParsed()) - return FALSE; - - m_pTextPage = (const CPDF_TextPage*)pTextPage; - m_strPageText = m_pTextPage->GetPageText(0, -1); - DeleteLinkList(); - if (m_strPageText.IsEmpty()) { - return FALSE; - } - ParseLink(); - m_bIsParsed = true; - return TRUE; -} - -void CPDF_LinkExtract::DeleteLinkList() { - while (m_LinkList.GetSize()) { - CPDF_LinkExt* linkinfo = NULL; - linkinfo = m_LinkList.GetAt(0); - m_LinkList.RemoveAt(0); - delete linkinfo; - } - m_LinkList.RemoveAll(); -} - -int CPDF_LinkExtract::CountLinks() const { - if (!m_bIsParsed) { - return -1; - } - return m_LinkList.GetSize(); -} - -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 == 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))) { - AppendToLinkList(start, nCount, strBeCheck); - } - } - start = ++pos; - } else { - pos++; - } - } -} - -FX_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; -} - -void CPDF_LinkExtract::AppendToLinkList(int start, - int count, - const CFX_WideString& strUrl) { - CPDF_LinkExt* linkInfo = new CPDF_LinkExt; - linkInfo->m_strUrl = strUrl; - linkInfo->m_Start = start; - linkInfo->m_Count = count; - m_LinkList.Add(linkInfo); -} - -CFX_WideString CPDF_LinkExtract::GetURL(int index) const { - if (!m_bIsParsed || index < 0 || index >= m_LinkList.GetSize()) { - return L""; - } - CPDF_LinkExt* link = NULL; - link = m_LinkList.GetAt(index); - if (!link) { - return L""; - } - return link->m_strUrl; -} -void CPDF_LinkExtract::GetBoundedSegment(int index, - int& start, - int& count) const { - if (!m_bIsParsed || index < 0 || index >= m_LinkList.GetSize()) { - return; - } - CPDF_LinkExt* link = NULL; - link = m_LinkList.GetAt(index); - if (!link) { - return; - } - start = link->m_Start; - count = link->m_Count; -} - -void CPDF_LinkExtract::GetRects(int index, CFX_RectArray& rects) const { - if (!m_bIsParsed || index < 0 || index >= m_LinkList.GetSize()) { - return; - } - CPDF_LinkExt* link = NULL; - link = m_LinkList.GetAt(index); - if (!link) { - return; - } - m_pTextPage->GetRectArray(link->m_Start, link->m_Count, rects); -} |