| // Copyright 2017 The PDFium Authors |
| // 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/font/cpdf_fontglobals.h" |
| |
| #include <utility> |
| |
| #include "core/fpdfapi/cmaps/CNS1/cmaps_cns1.h" |
| #include "core/fpdfapi/cmaps/GB1/cmaps_gb1.h" |
| #include "core/fpdfapi/cmaps/Japan1/cmaps_japan1.h" |
| #include "core/fpdfapi/cmaps/Korea1/cmaps_korea1.h" |
| #include "core/fpdfapi/font/cfx_stockfontarray.h" |
| #include "core/fpdfapi/font/cpdf_cid2unicodemap.h" |
| #include "core/fpdfapi/font/cpdf_cmap.h" |
| #include "core/fpdfapi/parser/cpdf_document.h" |
| #include "core/fxcrt/check.h" |
| #include "core/fxcrt/containers/contains.h" |
| |
| namespace { |
| |
| CPDF_FontGlobals* g_FontGlobals = nullptr; |
| |
| RetainPtr<const CPDF_CMap> LoadPredefinedCMap(ByteStringView name) { |
| if (!name.IsEmpty() && name[0] == '/') |
| name = name.Last(name.GetLength() - 1); |
| return pdfium::MakeRetain<CPDF_CMap>(name); |
| } |
| |
| } // namespace |
| |
| // static |
| void CPDF_FontGlobals::Create() { |
| DCHECK(!g_FontGlobals); |
| g_FontGlobals = new CPDF_FontGlobals(); |
| } |
| |
| // static |
| void CPDF_FontGlobals::Destroy() { |
| DCHECK(g_FontGlobals); |
| delete g_FontGlobals; |
| g_FontGlobals = nullptr; |
| } |
| |
| // static |
| CPDF_FontGlobals* CPDF_FontGlobals::GetInstance() { |
| DCHECK(g_FontGlobals); |
| return g_FontGlobals; |
| } |
| |
| CPDF_FontGlobals::CPDF_FontGlobals() = default; |
| |
| CPDF_FontGlobals::~CPDF_FontGlobals() = default; |
| |
| void CPDF_FontGlobals::LoadEmbeddedMaps() { |
| LoadEmbeddedGB1CMaps(); |
| LoadEmbeddedCNS1CMaps(); |
| LoadEmbeddedJapan1CMaps(); |
| LoadEmbeddedKorea1CMaps(); |
| } |
| |
| RetainPtr<CPDF_Font> CPDF_FontGlobals::Find( |
| CPDF_Document* pDoc, |
| CFX_FontMapper::StandardFont index) { |
| auto it = m_StockMap.find(pDoc); |
| if (it == m_StockMap.end() || !it->second) |
| return nullptr; |
| |
| return it->second->GetFont(index); |
| } |
| |
| void CPDF_FontGlobals::Set(CPDF_Document* pDoc, |
| CFX_FontMapper::StandardFont index, |
| RetainPtr<CPDF_Font> pFont) { |
| UnownedPtr<CPDF_Document> pKey(pDoc); |
| if (!pdfium::Contains(m_StockMap, pKey)) |
| m_StockMap[pKey] = std::make_unique<CFX_StockFontArray>(); |
| m_StockMap[pKey]->SetFont(index, std::move(pFont)); |
| } |
| |
| void CPDF_FontGlobals::Clear(CPDF_Document* pDoc) { |
| // Avoid constructing smart-pointer key as erase() doesn't invoke |
| // transparent lookup in the same way find() does. |
| auto it = m_StockMap.find(pDoc); |
| if (it != m_StockMap.end()) |
| m_StockMap.erase(it); |
| } |
| |
| void CPDF_FontGlobals::LoadEmbeddedGB1CMaps() { |
| SetEmbeddedCharset(CIDSET_GB1, fxcmap::kGB1_cmaps_span); |
| SetEmbeddedToUnicode(CIDSET_GB1, fxcmap::kGB1CID2Unicode_5); |
| } |
| |
| void CPDF_FontGlobals::LoadEmbeddedCNS1CMaps() { |
| SetEmbeddedCharset(CIDSET_CNS1, fxcmap::kCNS1_cmaps_span); |
| SetEmbeddedToUnicode(CIDSET_CNS1, fxcmap::kCNS1CID2Unicode_5); |
| } |
| |
| void CPDF_FontGlobals::LoadEmbeddedJapan1CMaps() { |
| SetEmbeddedCharset(CIDSET_JAPAN1, fxcmap::kJapan1_cmaps_span); |
| SetEmbeddedToUnicode(CIDSET_JAPAN1, fxcmap::kJapan1CID2Unicode_4); |
| } |
| |
| void CPDF_FontGlobals::LoadEmbeddedKorea1CMaps() { |
| SetEmbeddedCharset(CIDSET_KOREA1, fxcmap::kKorea1_cmaps_span); |
| SetEmbeddedToUnicode(CIDSET_KOREA1, fxcmap::kKorea1CID2Unicode_2); |
| } |
| |
| RetainPtr<const CPDF_CMap> CPDF_FontGlobals::GetPredefinedCMap( |
| const ByteString& name) { |
| auto it = m_CMaps.find(name); |
| if (it != m_CMaps.end()) |
| return it->second; |
| |
| RetainPtr<const CPDF_CMap> pCMap = LoadPredefinedCMap(name.AsStringView()); |
| if (!name.IsEmpty()) |
| m_CMaps[name] = pCMap; |
| |
| return pCMap; |
| } |
| |
| CPDF_CID2UnicodeMap* CPDF_FontGlobals::GetCID2UnicodeMap(CIDSet charset) { |
| if (!m_CID2UnicodeMaps[charset]) { |
| m_CID2UnicodeMaps[charset] = std::make_unique<CPDF_CID2UnicodeMap>(charset); |
| } |
| return m_CID2UnicodeMaps[charset].get(); |
| } |