| // 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/fpdfapi/fpdf_parser/include/cpdf_array.h" |
| #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h" |
| #include "core/fpdfdoc/doc_utils.h" |
| #include "core/include/fpdfdoc/fpdf_doc.h" |
| |
| namespace { |
| |
| const int nMaxRecursion = 32; |
| const FX_CHAR* const g_sZoomModes[] = {"XYZ", "Fit", "FitH", "FitV", "FitR", |
| "FitB", "FitBH", "FitBV", nullptr}; |
| |
| } // namespace |
| |
| int CPDF_Dest::GetPageIndex(CPDF_Document* pDoc) { |
| CPDF_Array* pArray = ToArray(m_pObj); |
| if (!pArray) |
| return 0; |
| |
| CPDF_Object* pPage = pArray->GetElementValue(0); |
| if (!pPage) |
| return 0; |
| if (pPage->IsNumber()) |
| return pPage->GetInteger(); |
| if (!pPage->IsDictionary()) |
| return 0; |
| return pDoc->GetPageIndex(pPage->GetObjNum()); |
| } |
| uint32_t CPDF_Dest::GetPageObjNum() { |
| CPDF_Array* pArray = ToArray(m_pObj); |
| if (!pArray) |
| return 0; |
| |
| CPDF_Object* pPage = pArray->GetElementValue(0); |
| if (!pPage) |
| return 0; |
| if (pPage->IsNumber()) |
| return pPage->GetInteger(); |
| if (pPage->IsDictionary()) |
| return pPage->GetObjNum(); |
| return 0; |
| } |
| |
| int CPDF_Dest::GetZoomMode() { |
| CPDF_Array* pArray = ToArray(m_pObj); |
| if (!pArray) |
| return 0; |
| |
| CPDF_Object* pObj = pArray->GetElementValue(1); |
| if (!pObj) |
| return 0; |
| |
| CFX_ByteString mode = pObj->GetString(); |
| for (int i = 0; g_sZoomModes[i]; ++i) { |
| if (mode == g_sZoomModes[i]) |
| return i + 1; |
| } |
| |
| return 0; |
| } |
| |
| FX_FLOAT CPDF_Dest::GetParam(int index) { |
| CPDF_Array* pArray = ToArray(m_pObj); |
| return pArray ? pArray->GetNumberAt(2 + index) : 0; |
| } |
| CFX_ByteString CPDF_Dest::GetRemoteName() { |
| return m_pObj ? m_pObj->GetString() : CFX_ByteString(); |
| } |
| CPDF_NameTree::CPDF_NameTree(CPDF_Document* pDoc, |
| const CFX_ByteStringC& category) { |
| if (pDoc->GetRoot() && pDoc->GetRoot()->GetDictBy("Names")) |
| m_pRoot = pDoc->GetRoot()->GetDictBy("Names")->GetDictBy(category); |
| else |
| m_pRoot = NULL; |
| } |
| static CPDF_Object* SearchNameNode(CPDF_Dictionary* pNode, |
| const CFX_ByteString& csName, |
| int& nIndex, |
| CPDF_Array** ppFind, |
| int nLevel = 0) { |
| if (nLevel > nMaxRecursion) { |
| return NULL; |
| } |
| CPDF_Array* pLimits = pNode->GetArrayBy("Limits"); |
| if (pLimits) { |
| CFX_ByteString csLeft = pLimits->GetStringAt(0); |
| CFX_ByteString csRight = pLimits->GetStringAt(1); |
| if (csLeft.Compare(csRight) > 0) { |
| CFX_ByteString csTmp = csRight; |
| csRight = csLeft; |
| csLeft = csTmp; |
| } |
| if (csName.Compare(csLeft) < 0 || csName.Compare(csRight) > 0) { |
| return NULL; |
| } |
| } |
| CPDF_Array* pNames = pNode->GetArrayBy("Names"); |
| if (pNames) { |
| uint32_t dwCount = pNames->GetCount() / 2; |
| for (uint32_t i = 0; i < dwCount; i++) { |
| CFX_ByteString csValue = pNames->GetStringAt(i * 2); |
| int32_t iCompare = csValue.Compare(csName); |
| if (iCompare <= 0) { |
| if (ppFind) { |
| *ppFind = pNames; |
| } |
| if (iCompare < 0) { |
| continue; |
| } |
| } else { |
| break; |
| } |
| nIndex += i; |
| return pNames->GetElementValue(i * 2 + 1); |
| } |
| nIndex += dwCount; |
| return NULL; |
| } |
| CPDF_Array* pKids = pNode->GetArrayBy("Kids"); |
| if (!pKids) { |
| return NULL; |
| } |
| for (uint32_t i = 0; i < pKids->GetCount(); i++) { |
| CPDF_Dictionary* pKid = pKids->GetDictAt(i); |
| if (!pKid) { |
| continue; |
| } |
| CPDF_Object* pFound = |
| SearchNameNode(pKid, csName, nIndex, ppFind, nLevel + 1); |
| if (pFound) { |
| return pFound; |
| } |
| } |
| return NULL; |
| } |
| static CPDF_Object* SearchNameNode(CPDF_Dictionary* pNode, |
| int nIndex, |
| int& nCurIndex, |
| CFX_ByteString& csName, |
| CPDF_Array** ppFind, |
| int nLevel = 0) { |
| if (nLevel > nMaxRecursion) { |
| return NULL; |
| } |
| CPDF_Array* pNames = pNode->GetArrayBy("Names"); |
| if (pNames) { |
| int nCount = pNames->GetCount() / 2; |
| if (nIndex >= nCurIndex + nCount) { |
| nCurIndex += nCount; |
| return NULL; |
| } |
| if (ppFind) { |
| *ppFind = pNames; |
| } |
| csName = pNames->GetStringAt((nIndex - nCurIndex) * 2); |
| return pNames->GetElementValue((nIndex - nCurIndex) * 2 + 1); |
| } |
| CPDF_Array* pKids = pNode->GetArrayBy("Kids"); |
| if (!pKids) { |
| return NULL; |
| } |
| for (uint32_t i = 0; i < pKids->GetCount(); i++) { |
| CPDF_Dictionary* pKid = pKids->GetDictAt(i); |
| if (!pKid) { |
| continue; |
| } |
| CPDF_Object* pFound = |
| SearchNameNode(pKid, nIndex, nCurIndex, csName, ppFind, nLevel + 1); |
| if (pFound) { |
| return pFound; |
| } |
| } |
| return NULL; |
| } |
| static int CountNames(CPDF_Dictionary* pNode, int nLevel = 0) { |
| if (nLevel > nMaxRecursion) { |
| return 0; |
| } |
| CPDF_Array* pNames = pNode->GetArrayBy("Names"); |
| if (pNames) { |
| return pNames->GetCount() / 2; |
| } |
| CPDF_Array* pKids = pNode->GetArrayBy("Kids"); |
| if (!pKids) { |
| return 0; |
| } |
| int nCount = 0; |
| for (uint32_t i = 0; i < pKids->GetCount(); i++) { |
| CPDF_Dictionary* pKid = pKids->GetDictAt(i); |
| if (!pKid) { |
| continue; |
| } |
| nCount += CountNames(pKid, nLevel + 1); |
| } |
| return nCount; |
| } |
| int CPDF_NameTree::GetCount() const { |
| if (!m_pRoot) { |
| return 0; |
| } |
| return ::CountNames(m_pRoot); |
| } |
| int CPDF_NameTree::GetIndex(const CFX_ByteString& csName) const { |
| if (!m_pRoot) { |
| return -1; |
| } |
| int nIndex = 0; |
| if (!SearchNameNode(m_pRoot, csName, nIndex, NULL)) { |
| return -1; |
| } |
| return nIndex; |
| } |
| CPDF_Object* CPDF_NameTree::LookupValue(int nIndex, |
| CFX_ByteString& csName) const { |
| if (!m_pRoot) { |
| return NULL; |
| } |
| int nCurIndex = 0; |
| return SearchNameNode(m_pRoot, nIndex, nCurIndex, csName, NULL); |
| } |
| CPDF_Object* CPDF_NameTree::LookupValue(const CFX_ByteString& csName) const { |
| if (!m_pRoot) { |
| return NULL; |
| } |
| int nIndex = 0; |
| return SearchNameNode(m_pRoot, csName, nIndex, NULL); |
| } |
| CPDF_Array* CPDF_NameTree::LookupNamedDest(CPDF_Document* pDoc, |
| const CFX_ByteStringC& sName) { |
| CPDF_Object* pValue = LookupValue(sName); |
| if (!pValue) { |
| CPDF_Dictionary* pDests = pDoc->GetRoot()->GetDictBy("Dests"); |
| if (!pDests) |
| return nullptr; |
| pValue = pDests->GetElementValue(sName); |
| } |
| if (!pValue) |
| return nullptr; |
| if (CPDF_Array* pArray = pValue->AsArray()) |
| return pArray; |
| if (CPDF_Dictionary* pDict = pValue->AsDictionary()) |
| return pDict->GetArrayBy("D"); |
| return nullptr; |
| } |
| |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ || \ |
| _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
| static CFX_WideString ChangeSlashToPlatform(const FX_WCHAR* str) { |
| CFX_WideString result; |
| while (*str) { |
| if (*str == '/') { |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| result += ':'; |
| #else |
| result += '\\'; |
| #endif |
| } else { |
| result += *str; |
| } |
| str++; |
| } |
| return result; |
| } |
| |
| static CFX_WideString ChangeSlashToPDF(const FX_WCHAR* str) { |
| CFX_WideString result; |
| while (*str) { |
| if (*str == '\\' || *str == ':') { |
| result += '/'; |
| } else { |
| result += *str; |
| } |
| str++; |
| } |
| return result; |
| } |
| #endif // _FXM_PLATFORM_APPLE_ || _FXM_PLATFORM_WINDOWS_ |
| |
| CFX_WideString CPDF_FileSpec::DecodeFileName(const CFX_WideStringC& filepath) { |
| if (filepath.GetLength() <= 1) |
| return CFX_WideString(); |
| |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| if (filepath.Left(sizeof("/Mac") - 1) == CFX_WideStringC(L"/Mac")) |
| return ChangeSlashToPlatform(filepath.GetPtr() + 1); |
| return ChangeSlashToPlatform(filepath.GetPtr()); |
| #elif _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
| if (filepath.GetAt(0) != '/') |
| return ChangeSlashToPlatform(filepath.GetPtr()); |
| if (filepath.GetAt(1) == '/') |
| return ChangeSlashToPlatform(filepath.GetPtr() + 1); |
| if (filepath.GetAt(2) == '/') { |
| CFX_WideString result; |
| result += filepath.GetAt(1); |
| result += ':'; |
| result += ChangeSlashToPlatform(filepath.GetPtr() + 2); |
| return result; |
| } |
| CFX_WideString result; |
| result += '\\'; |
| result += ChangeSlashToPlatform(filepath.GetPtr()); |
| return result; |
| #else |
| return filepath; |
| #endif |
| } |
| |
| bool CPDF_FileSpec::GetFileName(CFX_WideString* csFileName) const { |
| if (CPDF_Dictionary* pDict = m_pObj->AsDictionary()) { |
| *csFileName = pDict->GetUnicodeTextBy("UF"); |
| if (csFileName->IsEmpty()) { |
| *csFileName = CFX_WideString::FromLocal(pDict->GetStringBy("F")); |
| } |
| if (pDict->GetStringBy("FS") == "URL") |
| return true; |
| if (csFileName->IsEmpty()) { |
| if (pDict->KeyExist("DOS")) { |
| *csFileName = CFX_WideString::FromLocal(pDict->GetStringBy("DOS")); |
| } else if (pDict->KeyExist("Mac")) { |
| *csFileName = CFX_WideString::FromLocal(pDict->GetStringBy("Mac")); |
| } else if (pDict->KeyExist("Unix")) { |
| *csFileName = CFX_WideString::FromLocal(pDict->GetStringBy("Unix")); |
| } else { |
| return false; |
| } |
| } |
| } else if (m_pObj->IsString()) { |
| *csFileName = CFX_WideString::FromLocal(m_pObj->GetString()); |
| } else { |
| return false; |
| } |
| *csFileName = DecodeFileName(*csFileName); |
| return true; |
| } |
| |
| CPDF_FileSpec::CPDF_FileSpec() { |
| m_pObj = new CPDF_Dictionary; |
| m_pObj->AsDictionary()->SetAtName("Type", "Filespec"); |
| } |
| |
| CFX_WideString CPDF_FileSpec::EncodeFileName(const CFX_WideStringC& filepath) { |
| if (filepath.GetLength() <= 1) { |
| return CFX_WideString(); |
| } |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
| if (filepath.GetAt(1) == ':') { |
| CFX_WideString result; |
| result = '/'; |
| result += filepath.GetAt(0); |
| if (filepath.GetAt(2) != '\\') { |
| result += '/'; |
| } |
| result += ChangeSlashToPDF(filepath.GetPtr() + 2); |
| return result; |
| } |
| if (filepath.GetAt(0) == '\\' && filepath.GetAt(1) == '\\') { |
| return ChangeSlashToPDF(filepath.GetPtr() + 1); |
| } |
| if (filepath.GetAt(0) == '\\') { |
| CFX_WideString result; |
| result = '/'; |
| result += ChangeSlashToPDF(filepath.GetPtr()); |
| return result; |
| } |
| return ChangeSlashToPDF(filepath.GetPtr()); |
| #elif _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| if (filepath.Left(sizeof("Mac") - 1) == FX_WSTRC(L"Mac")) { |
| CFX_WideString result; |
| result = '/'; |
| result += ChangeSlashToPDF(filepath.GetPtr()); |
| return result; |
| } |
| return ChangeSlashToPDF(filepath.GetPtr()); |
| #else |
| return filepath; |
| #endif |
| } |
| |
| void CPDF_FileSpec::SetFileName(const CFX_WideStringC& wsFileName) { |
| if (!m_pObj) |
| return; |
| |
| CFX_WideString wsStr = EncodeFileName(wsFileName); |
| if (m_pObj->IsString()) { |
| m_pObj->SetString(CFX_ByteString::FromUnicode(wsStr)); |
| } else if (CPDF_Dictionary* pDict = m_pObj->AsDictionary()) { |
| pDict->SetAtString("F", CFX_ByteString::FromUnicode(wsStr)); |
| pDict->SetAtString("UF", PDF_EncodeText(wsStr)); |
| } |
| } |
| |
| static CFX_WideString _MakeRoman(int num) { |
| const int arabic[] = {1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1}; |
| const CFX_WideString roman[] = {L"m", L"cm", L"d", L"cd", L"c", |
| L"xc", L"l", L"xl", L"x", L"ix", |
| L"v", L"iv", L"i"}; |
| const int nMaxNum = 1000000; |
| num %= nMaxNum; |
| int i = 0; |
| CFX_WideString wsRomanNumber; |
| while (num > 0) { |
| while (num >= arabic[i]) { |
| num = num - arabic[i]; |
| wsRomanNumber += roman[i]; |
| } |
| i = i + 1; |
| } |
| return wsRomanNumber; |
| } |
| |
| static CFX_WideString _MakeLetters(int num) { |
| if (num == 0) { |
| return CFX_WideString(); |
| } |
| CFX_WideString wsLetters; |
| const int nMaxCount = 1000; |
| const int nLetterCount = 26; |
| num -= 1; |
| int count = num / nLetterCount + 1; |
| count %= nMaxCount; |
| FX_WCHAR ch = L'a' + num % nLetterCount; |
| for (int i = 0; i < count; i++) { |
| wsLetters += ch; |
| } |
| return wsLetters; |
| } |
| static CFX_WideString _GetLabelNumPortion(int num, |
| const CFX_ByteString& bsStyle) { |
| CFX_WideString wsNumPortion; |
| if (bsStyle.IsEmpty()) { |
| return wsNumPortion; |
| } |
| if (bsStyle == "D") { |
| wsNumPortion.Format(L"%d", num); |
| } else if (bsStyle == "R") { |
| wsNumPortion = _MakeRoman(num); |
| wsNumPortion.MakeUpper(); |
| } else if (bsStyle == "r") { |
| wsNumPortion = _MakeRoman(num); |
| } else if (bsStyle == "A") { |
| wsNumPortion = _MakeLetters(num); |
| wsNumPortion.MakeUpper(); |
| } else if (bsStyle == "a") { |
| wsNumPortion = _MakeLetters(num); |
| } |
| return wsNumPortion; |
| } |
| CFX_WideString CPDF_PageLabel::GetLabel(int nPage) const { |
| CFX_WideString wsLabel; |
| if (!m_pDocument) { |
| return wsLabel; |
| } |
| CPDF_Dictionary* pPDFRoot = m_pDocument->GetRoot(); |
| if (!pPDFRoot) { |
| return wsLabel; |
| } |
| CPDF_Dictionary* pLabels = pPDFRoot->GetDictBy("PageLabels"); |
| CPDF_NumberTree numberTree(pLabels); |
| CPDF_Object* pValue = NULL; |
| int n = nPage; |
| while (n >= 0) { |
| pValue = numberTree.LookupValue(n); |
| if (pValue) { |
| break; |
| } |
| n--; |
| } |
| if (pValue) { |
| pValue = pValue->GetDirect(); |
| if (CPDF_Dictionary* pLabel = pValue->AsDictionary()) { |
| if (pLabel->KeyExist("P")) { |
| wsLabel += pLabel->GetUnicodeTextBy("P"); |
| } |
| CFX_ByteString bsNumberingStyle = pLabel->GetStringBy("S", NULL); |
| int nLabelNum = nPage - n + pLabel->GetIntegerBy("St", 1); |
| CFX_WideString wsNumPortion = |
| _GetLabelNumPortion(nLabelNum, bsNumberingStyle); |
| wsLabel += wsNumPortion; |
| return wsLabel; |
| } |
| } |
| wsLabel.Format(L"%d", nPage + 1); |
| return wsLabel; |
| } |
| int32_t CPDF_PageLabel::GetPageByLabel(const CFX_ByteStringC& bsLabel) const { |
| if (!m_pDocument) { |
| return -1; |
| } |
| CPDF_Dictionary* pPDFRoot = m_pDocument->GetRoot(); |
| if (!pPDFRoot) { |
| return -1; |
| } |
| int nPages = m_pDocument->GetPageCount(); |
| CFX_ByteString bsLbl; |
| CFX_ByteString bsOrig = bsLabel; |
| for (int i = 0; i < nPages; i++) { |
| bsLbl = PDF_EncodeText(GetLabel(i)); |
| if (!bsLbl.Compare(bsOrig)) { |
| return i; |
| } |
| } |
| bsLbl = bsOrig; |
| int nPage = FXSYS_atoi(bsLbl); |
| if (nPage > 0 && nPage <= nPages) { |
| return nPage; |
| } |
| return -1; |
| } |
| int32_t CPDF_PageLabel::GetPageByLabel(const CFX_WideStringC& wsLabel) const { |
| CFX_ByteString bsLabel = PDF_EncodeText(wsLabel.GetPtr()); |
| return GetPageByLabel(bsLabel); |
| } |
