269 lines
9.8 KiB
C++
269 lines
9.8 KiB
C++
// Copyright 2014 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "public/fpdf_sysfontinfo.h"
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#include <stddef.h>
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#include <memory>
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#include "core/fxcrt/fx_codepage.h"
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#include "core/fxcrt/stl_util.h"
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#include "core/fxcrt/unowned_ptr.h"
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#include "core/fxge/cfx_font.h"
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#include "core/fxge/cfx_fontmapper.h"
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#include "core/fxge/cfx_fontmgr.h"
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#include "core/fxge/cfx_gemodule.h"
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#include "core/fxge/fx_font.h"
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#include "core/fxge/systemfontinfo_iface.h"
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#include "third_party/base/numerics/safe_conversions.h"
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#ifdef PDF_ENABLE_XFA
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#include "xfa/fgas/font/cfgas_fontmgr.h"
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#include "xfa/fgas/font/cfgas_gemodule.h"
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#endif
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static_assert(FXFONT_ANSI_CHARSET == static_cast<int>(FX_Charset::kANSI),
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"Charset must match");
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static_assert(FXFONT_DEFAULT_CHARSET == static_cast<int>(FX_Charset::kDefault),
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"Charset must match");
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static_assert(FXFONT_SYMBOL_CHARSET == static_cast<int>(FX_Charset::kSymbol),
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"Charset must match");
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static_assert(FXFONT_SHIFTJIS_CHARSET ==
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static_cast<int>(FX_Charset::kShiftJIS),
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"Charset must match");
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static_assert(FXFONT_HANGEUL_CHARSET == static_cast<int>(FX_Charset::kHangul),
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"Charset must match");
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static_assert(FXFONT_GB2312_CHARSET ==
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static_cast<int>(FX_Charset::kChineseSimplified),
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"Charset must match");
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static_assert(FXFONT_CHINESEBIG5_CHARSET ==
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static_cast<int>(FX_Charset::kChineseTraditional),
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"Charset must match");
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static_assert(FXFONT_GREEK_CHARSET ==
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static_cast<int>(FX_Charset::kMSWin_Greek),
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"Charset must match");
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static_assert(FXFONT_VIETNAMESE_CHARSET ==
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static_cast<int>(FX_Charset::kMSWin_Vietnamese),
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"Charset must match");
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static_assert(FXFONT_HEBREW_CHARSET ==
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static_cast<int>(FX_Charset::kMSWin_Hebrew),
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"Charset must match");
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static_assert(FXFONT_ARABIC_CHARSET ==
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static_cast<int>(FX_Charset::kMSWin_Arabic),
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"Charset must match");
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static_assert(FXFONT_CYRILLIC_CHARSET ==
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static_cast<int>(FX_Charset::kMSWin_Cyrillic),
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"Charset must match");
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static_assert(FXFONT_THAI_CHARSET == static_cast<int>(FX_Charset::kThai),
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"Charset must match");
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static_assert(FXFONT_EASTERNEUROPEAN_CHARSET ==
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static_cast<int>(FX_Charset::kMSWin_EasternEuropean),
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"Charset must match");
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static_assert(offsetof(CFX_Font::CharsetFontMap, charset) ==
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offsetof(FPDF_CharsetFontMap, charset),
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"CFX_Font::CharsetFontMap must be same as FPDF_CharsetFontMap");
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static_assert(offsetof(CFX_Font::CharsetFontMap, fontname) ==
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offsetof(FPDF_CharsetFontMap, fontname),
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"CFX_Font::CharsetFontMap must be same as FPDF_CharsetFontMap");
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static_assert(sizeof(CFX_Font::CharsetFontMap) == sizeof(FPDF_CharsetFontMap),
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"CFX_Font::CharsetFontMap must be same as FPDF_CharsetFontMap");
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class CFX_ExternalFontInfo final : public SystemFontInfoIface {
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public:
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explicit CFX_ExternalFontInfo(FPDF_SYSFONTINFO* pInfo) : m_pInfo(pInfo) {}
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~CFX_ExternalFontInfo() override {
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if (m_pInfo->Release)
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m_pInfo->Release(m_pInfo);
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}
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bool EnumFontList(CFX_FontMapper* pMapper) override {
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if (m_pInfo->EnumFonts) {
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m_pInfo->EnumFonts(m_pInfo, pMapper);
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return true;
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}
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return false;
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}
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void* MapFont(int weight,
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bool bItalic,
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FX_Charset charset,
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int pitch_family,
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const ByteString& face) override {
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if (!m_pInfo->MapFont)
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return nullptr;
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int iExact;
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return m_pInfo->MapFont(m_pInfo, weight, bItalic, static_cast<int>(charset),
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pitch_family, face.c_str(), &iExact);
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}
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void* GetFont(const ByteString& family) override {
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if (!m_pInfo->GetFont)
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return nullptr;
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return m_pInfo->GetFont(m_pInfo, family.c_str());
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}
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size_t GetFontData(void* hFont,
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uint32_t table,
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pdfium::span<uint8_t> buffer) override {
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if (!m_pInfo->GetFontData)
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return 0;
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return m_pInfo->GetFontData(m_pInfo, hFont, table, buffer.data(),
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fxcrt::CollectionSize<unsigned long>(buffer));
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}
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bool GetFaceName(void* hFont, ByteString* name) override {
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if (!m_pInfo->GetFaceName)
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return false;
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unsigned long size = m_pInfo->GetFaceName(m_pInfo, hFont, nullptr, 0);
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if (size == 0)
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return false;
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char* buffer = FX_Alloc(char, size);
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size = m_pInfo->GetFaceName(m_pInfo, hFont, buffer, size);
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*name = ByteString(buffer, size);
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FX_Free(buffer);
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return true;
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}
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bool GetFontCharset(void* hFont, FX_Charset* charset) override {
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if (!m_pInfo->GetFontCharset)
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return false;
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*charset = FX_GetCharsetFromInt(m_pInfo->GetFontCharset(m_pInfo, hFont));
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return true;
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}
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void DeleteFont(void* hFont) override {
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if (m_pInfo->DeleteFont)
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m_pInfo->DeleteFont(m_pInfo, hFont);
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}
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private:
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UnownedPtr<FPDF_SYSFONTINFO> const m_pInfo;
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};
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FPDF_EXPORT void FPDF_CALLCONV FPDF_AddInstalledFont(void* mapper,
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const char* face,
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int charset) {
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CFX_FontMapper* pMapper = static_cast<CFX_FontMapper*>(mapper);
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pMapper->AddInstalledFont(face, FX_GetCharsetFromInt(charset));
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}
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FPDF_EXPORT void FPDF_CALLCONV
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FPDF_SetSystemFontInfo(FPDF_SYSFONTINFO* pFontInfoExt) {
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if (pFontInfoExt->version != 1)
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return;
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CFX_GEModule::Get()->GetFontMgr()->GetBuiltinMapper()->SetSystemFontInfo(
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std::make_unique<CFX_ExternalFontInfo>(pFontInfoExt));
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#ifdef PDF_ENABLE_XFA
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CFGAS_GEModule::Get()->GetFontMgr()->EnumFonts();
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#endif
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}
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FPDF_EXPORT const FPDF_CharsetFontMap* FPDF_CALLCONV FPDF_GetDefaultTTFMap() {
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return reinterpret_cast<const FPDF_CharsetFontMap*>(CFX_Font::kDefaultTTFMap);
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}
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struct FPDF_SYSFONTINFO_DEFAULT final : public FPDF_SYSFONTINFO {
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UnownedPtr<SystemFontInfoIface> m_pFontInfo;
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};
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static void DefaultRelease(struct _FPDF_SYSFONTINFO* pThis) {
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auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
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delete pDefault->m_pFontInfo.ExtractAsDangling();
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}
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static void DefaultEnumFonts(struct _FPDF_SYSFONTINFO* pThis, void* pMapper) {
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auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
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pDefault->m_pFontInfo->EnumFontList(static_cast<CFX_FontMapper*>(pMapper));
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}
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static void* DefaultMapFont(struct _FPDF_SYSFONTINFO* pThis,
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int weight,
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int bItalic,
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int charset,
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int pitch_family,
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const char* family,
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int* bExact) {
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auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
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return pDefault->m_pFontInfo->MapFont(
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weight, !!bItalic, FX_GetCharsetFromInt(charset), pitch_family, family);
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}
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void* DefaultGetFont(struct _FPDF_SYSFONTINFO* pThis, const char* family) {
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auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
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return pDefault->m_pFontInfo->GetFont(family);
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}
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static unsigned long DefaultGetFontData(struct _FPDF_SYSFONTINFO* pThis,
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void* hFont,
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unsigned int table,
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unsigned char* buffer,
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unsigned long buf_size) {
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auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
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return pdfium::base::checked_cast<unsigned long>(
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pDefault->m_pFontInfo->GetFontData(hFont, table, {buffer, buf_size}));
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}
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static unsigned long DefaultGetFaceName(struct _FPDF_SYSFONTINFO* pThis,
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void* hFont,
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char* buffer,
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unsigned long buf_size) {
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ByteString name;
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auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
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if (!pDefault->m_pFontInfo->GetFaceName(hFont, &name))
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return 0;
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const unsigned long copy_length =
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pdfium::base::checked_cast<unsigned long>(name.GetLength() + 1);
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if (copy_length <= buf_size)
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strncpy(buffer, name.c_str(), copy_length * sizeof(ByteString::CharType));
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return copy_length;
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}
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static int DefaultGetFontCharset(struct _FPDF_SYSFONTINFO* pThis, void* hFont) {
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FX_Charset charset;
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auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
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if (!pDefault->m_pFontInfo->GetFontCharset(hFont, &charset))
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return 0;
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return static_cast<int>(charset);
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}
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static void DefaultDeleteFont(struct _FPDF_SYSFONTINFO* pThis, void* hFont) {
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auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
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pDefault->m_pFontInfo->DeleteFont(hFont);
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}
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FPDF_EXPORT FPDF_SYSFONTINFO* FPDF_CALLCONV FPDF_GetDefaultSystemFontInfo() {
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std::unique_ptr<SystemFontInfoIface> pFontInfo =
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CFX_GEModule::Get()->GetPlatform()->CreateDefaultSystemFontInfo();
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if (!pFontInfo)
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return nullptr;
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FPDF_SYSFONTINFO_DEFAULT* pFontInfoExt =
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FX_Alloc(FPDF_SYSFONTINFO_DEFAULT, 1);
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pFontInfoExt->DeleteFont = DefaultDeleteFont;
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pFontInfoExt->EnumFonts = DefaultEnumFonts;
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pFontInfoExt->GetFaceName = DefaultGetFaceName;
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pFontInfoExt->GetFont = DefaultGetFont;
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pFontInfoExt->GetFontCharset = DefaultGetFontCharset;
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pFontInfoExt->GetFontData = DefaultGetFontData;
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pFontInfoExt->MapFont = DefaultMapFont;
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pFontInfoExt->Release = DefaultRelease;
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pFontInfoExt->version = 1;
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pFontInfoExt->m_pFontInfo = pFontInfo.release();
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return pFontInfoExt;
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}
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FPDF_EXPORT void FPDF_CALLCONV
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FPDF_FreeDefaultSystemFontInfo(FPDF_SYSFONTINFO* pFontInfo) {
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FX_Free(static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pFontInfo));
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}
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