| // 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/fpdftext/fpdf_text_int.h" |
| |
| #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_formobject.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/ipdf_linkextract.h" |
| #include "core/fpdftext/include/ipdf_textpage.h" |
| #include "core/fpdftext/include/ipdf_textpagefind.h" |
| #include "core/fpdftext/unicodenormalization.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_RLTB 1 |
| #define FPDFTEXT_LEFT -1 |
| #define FPDFTEXT_RIGHT 1 |
| |
| #define FPDFTEXT_MATCHCASE 0x00000001 |
| #define FPDFTEXT_MATCHWHOLEWORD 0x00000002 |
| #define FPDFTEXT_CONSECUTIVE 0x00000004 |
| |
| 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 == (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; |
| } |
| |
| 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(uint32_t 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 == (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); |
| 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 == (uint32_t)-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(); |
| uint32_t 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 == (uint32_t)-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; |
| } |
| // 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 = NULL; |
| info.m_CharCode = -1; |
| info.m_Flag = FPDFTEXT_CHAR_GENERATED; |
| int preWidth = 0; |
| if (preChar->m_pTextObj && preChar->m_CharCode != (uint32_t)-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 == 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); |
| } |
| } |
| |
| 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 == 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))) { |
| 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); |
| } |
