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// Copyright 2015 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.
#include "testing/embedder_test.h"
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "core/fdrm/fx_crypt.h"
#include "public/cpp/fpdf_scopers.h"
#include "public/fpdf_dataavail.h"
#include "public/fpdf_edit.h"
#include "public/fpdf_text.h"
#include "public/fpdfview.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/test_loader.h"
#include "testing/utils/bitmap_saver.h"
#include "testing/utils/file_util.h"
#include "testing/utils/hash.h"
#include "testing/utils/path_service.h"
#include "third_party/base/check.h"
#include "third_party/base/notreached.h"
#include "third_party/base/stl_util.h"
#ifdef PDF_ENABLE_V8
#include "testing/v8_test_environment.h"
#include "v8/include/v8-platform.h"
#include "v8/include/v8.h"
#endif // PDF_ENABLE_V8
namespace {
int GetBitmapBytesPerPixel(FPDF_BITMAP bitmap) {
return EmbedderTest::BytesPerPixelForFormat(FPDFBitmap_GetFormat(bitmap));
}
#if defined(OS_WIN)
int CALLBACK GetRecordProc(HDC hdc,
HANDLETABLE* handle_table,
const ENHMETARECORD* record,
int objects_count,
LPARAM param) {
auto& records = *reinterpret_cast<std::vector<const ENHMETARECORD*>*>(param);
records.push_back(record);
return 1;
}
#endif // defined(OS_WIN)
} // namespace
EmbedderTest::EmbedderTest()
: default_delegate_(std::make_unique<EmbedderTest::Delegate>()),
delegate_(default_delegate_.get()) {
FPDF_FILEWRITE::version = 1;
FPDF_FILEWRITE::WriteBlock = WriteBlockCallback;
}
EmbedderTest::~EmbedderTest() = default;
void EmbedderTest::SetUp() {
UNSUPPORT_INFO* info = static_cast<UNSUPPORT_INFO*>(this);
memset(info, 0, sizeof(UNSUPPORT_INFO));
info->version = 1;
info->FSDK_UnSupport_Handler = UnsupportedHandlerTrampoline;
FSDK_SetUnSpObjProcessHandler(info);
saved_document_ = nullptr;
}
void EmbedderTest::TearDown() {
// Use an EXPECT_EQ() here and continue to let TearDown() finish as cleanly as
// possible. This can fail when an DCHECK test fails in a test case.
EXPECT_EQ(0U, page_map_.size());
EXPECT_EQ(0U, saved_page_map_.size());
if (document_)
CloseDocument();
FPDFAvail_Destroy(avail_);
loader_.reset();
}
bool EmbedderTest::CreateEmptyDocument() {
document_ = FPDF_CreateNewDocument();
if (!document_)
return false;
form_handle_ =
SetupFormFillEnvironment(document_, JavaScriptOption::kEnableJavaScript);
return true;
}
bool EmbedderTest::OpenDocument(const std::string& filename) {
return OpenDocumentWithOptions(filename, nullptr,
LinearizeOption::kDefaultLinearize,
JavaScriptOption::kEnableJavaScript);
}
bool EmbedderTest::OpenDocumentLinearized(const std::string& filename) {
return OpenDocumentWithOptions(filename, nullptr,
LinearizeOption::kMustLinearize,
JavaScriptOption::kEnableJavaScript);
}
bool EmbedderTest::OpenDocumentWithPassword(const std::string& filename,
const char* password) {
return OpenDocumentWithOptions(filename, password,
LinearizeOption::kDefaultLinearize,
JavaScriptOption::kEnableJavaScript);
}
bool EmbedderTest::OpenDocumentWithoutJavaScript(const std::string& filename) {
return OpenDocumentWithOptions(filename, nullptr,
LinearizeOption::kDefaultLinearize,
JavaScriptOption::kDisableJavaScript);
}
bool EmbedderTest::OpenDocumentWithOptions(const std::string& filename,
const char* password,
LinearizeOption linearize_option,
JavaScriptOption javascript_option) {
std::string file_path;
if (!PathService::GetTestFilePath(filename, &file_path))
return false;
file_contents_ = GetFileContents(file_path.c_str(), &file_length_);
if (!file_contents_)
return false;
EXPECT_TRUE(!loader_);
loader_ = std::make_unique<TestLoader>(
pdfium::make_span(file_contents_.get(), file_length_));
memset(&file_access_, 0, sizeof(file_access_));
file_access_.m_FileLen = static_cast<unsigned long>(file_length_);
file_access_.m_GetBlock = TestLoader::GetBlock;
file_access_.m_Param = loader_.get();
fake_file_access_ = std::make_unique<FakeFileAccess>(&file_access_);
return OpenDocumentHelper(password, linearize_option, javascript_option,
fake_file_access_.get(), &document_, &avail_,
&form_handle_);
}
bool EmbedderTest::OpenDocumentHelper(const char* password,
LinearizeOption linearize_option,
JavaScriptOption javascript_option,
FakeFileAccess* network_simulator,
FPDF_DOCUMENT* document,
FPDF_AVAIL* avail,
FPDF_FORMHANDLE* form_handle) {
network_simulator->AddSegment(0, 1024);
network_simulator->SetRequestedDataAvailable();
*avail = FPDFAvail_Create(network_simulator->GetFileAvail(),
network_simulator->GetFileAccess());
if (FPDFAvail_IsLinearized(*avail) == PDF_LINEARIZED) {
int32_t nRet = PDF_DATA_NOTAVAIL;
while (nRet == PDF_DATA_NOTAVAIL) {
network_simulator->SetRequestedDataAvailable();
nRet =
FPDFAvail_IsDocAvail(*avail, network_simulator->GetDownloadHints());
}
if (nRet == PDF_DATA_ERROR)
return false;
*document = FPDFAvail_GetDocument(*avail, password);
if (!*document)
return false;
nRet = PDF_DATA_NOTAVAIL;
while (nRet == PDF_DATA_NOTAVAIL) {
network_simulator->SetRequestedDataAvailable();
nRet =
FPDFAvail_IsFormAvail(*avail, network_simulator->GetDownloadHints());
}
if (nRet == PDF_FORM_ERROR)
return false;
int page_count = FPDF_GetPageCount(*document);
for (int i = 0; i < page_count; ++i) {
nRet = PDF_DATA_NOTAVAIL;
while (nRet == PDF_DATA_NOTAVAIL) {
network_simulator->SetRequestedDataAvailable();
nRet = FPDFAvail_IsPageAvail(*avail, i,
network_simulator->GetDownloadHints());
}
if (nRet == PDF_DATA_ERROR)
return false;
}
} else {
if (linearize_option == LinearizeOption::kMustLinearize)
return false;
network_simulator->SetWholeFileAvailable();
*document =
FPDF_LoadCustomDocument(network_simulator->GetFileAccess(), password);
if (!*document)
return false;
}
*form_handle = SetupFormFillEnvironment(*document, javascript_option);
int doc_type = FPDF_GetFormType(*document);
if (doc_type == FORMTYPE_XFA_FULL || doc_type == FORMTYPE_XFA_FOREGROUND)
FPDF_LoadXFA(*document);
(void)FPDF_GetDocPermissions(*document);
return true;
}
void EmbedderTest::CloseDocument() {
FORM_DoDocumentAAction(form_handle_, FPDFDOC_AACTION_WC);
FPDFDOC_ExitFormFillEnvironment(form_handle_);
form_handle_ = nullptr;
FPDF_CloseDocument(document_);
document_ = nullptr;
}
FPDF_FORMHANDLE EmbedderTest::SetupFormFillEnvironment(
FPDF_DOCUMENT doc,
JavaScriptOption javascript_option) {
IPDF_JSPLATFORM* platform = static_cast<IPDF_JSPLATFORM*>(this);
memset(platform, '\0', sizeof(IPDF_JSPLATFORM));
platform->version = 3;
platform->app_alert = AlertTrampoline;
FPDF_FORMFILLINFO* formfillinfo = static_cast<FPDF_FORMFILLINFO*>(this);
memset(formfillinfo, 0, sizeof(FPDF_FORMFILLINFO));
formfillinfo->version = form_fill_info_version_;
formfillinfo->FFI_SetTimer = SetTimerTrampoline;
formfillinfo->FFI_KillTimer = KillTimerTrampoline;
formfillinfo->FFI_GetPage = GetPageTrampoline;
formfillinfo->FFI_DoURIAction = DoURIActionTrampoline;
formfillinfo->FFI_DoGoToAction = DoGoToActionTrampoline;
formfillinfo->FFI_OnFocusChange = OnFocusChangeTrampoline;
formfillinfo->FFI_DoURIActionWithKeyboardModifier =
DoURIActionWithKeyboardModifierTrampoline;
if (javascript_option == JavaScriptOption::kEnableJavaScript)
formfillinfo->m_pJsPlatform = platform;
FPDF_FORMHANDLE form_handle =
FPDFDOC_InitFormFillEnvironment(doc, formfillinfo);
SetInitialFormFieldHighlight(form_handle);
return form_handle;
}
void EmbedderTest::DoOpenActions() {
DCHECK(form_handle_);
FORM_DoDocumentJSAction(form_handle_);
FORM_DoDocumentOpenAction(form_handle_);
}
int EmbedderTest::GetFirstPageNum() {
int first_page = FPDFAvail_GetFirstPageNum(document_);
(void)FPDFAvail_IsPageAvail(avail_, first_page,
fake_file_access_->GetDownloadHints());
return first_page;
}
int EmbedderTest::GetPageCount() {
int page_count = FPDF_GetPageCount(document_);
for (int i = 0; i < page_count; ++i)
(void)FPDFAvail_IsPageAvail(avail_, i,
fake_file_access_->GetDownloadHints());
return page_count;
}
FPDF_PAGE EmbedderTest::LoadPage(int page_number) {
return LoadPageCommon(page_number, true);
}
FPDF_PAGE EmbedderTest::LoadPageNoEvents(int page_number) {
return LoadPageCommon(page_number, false);
}
FPDF_PAGE EmbedderTest::LoadPageCommon(int page_number, bool do_events) {
DCHECK(form_handle_);
DCHECK(page_number >= 0);
DCHECK(!pdfium::Contains(page_map_, page_number));
FPDF_PAGE page = FPDF_LoadPage(document_, page_number);
if (!page)
return nullptr;
if (do_events) {
FORM_OnAfterLoadPage(page, form_handle_);
FORM_DoPageAAction(page, form_handle_, FPDFPAGE_AACTION_OPEN);
}
page_map_[page_number] = page;
return page;
}
void EmbedderTest::UnloadPage(FPDF_PAGE page) {
UnloadPageCommon(page, true);
}
void EmbedderTest::UnloadPageNoEvents(FPDF_PAGE page) {
UnloadPageCommon(page, false);
}
void EmbedderTest::UnloadPageCommon(FPDF_PAGE page, bool do_events) {
DCHECK(form_handle_);
int page_number = GetPageNumberForLoadedPage(page);
if (page_number < 0) {
NOTREACHED();
return;
}
if (do_events) {
FORM_DoPageAAction(page, form_handle_, FPDFPAGE_AACTION_CLOSE);
FORM_OnBeforeClosePage(page, form_handle_);
}
FPDF_ClosePage(page);
page_map_.erase(page_number);
}
void EmbedderTest::SetInitialFormFieldHighlight(FPDF_FORMHANDLE form) {
FPDF_SetFormFieldHighlightColor(form, FPDF_FORMFIELD_UNKNOWN, 0xFFE4DD);
FPDF_SetFormFieldHighlightAlpha(form, 100);
}
ScopedFPDFBitmap EmbedderTest::RenderLoadedPage(FPDF_PAGE page) {
return RenderLoadedPageWithFlags(page, 0);
}
ScopedFPDFBitmap EmbedderTest::RenderLoadedPageWithFlags(FPDF_PAGE page,
int flags) {
if (GetPageNumberForLoadedPage(page) < 0) {
NOTREACHED();
return nullptr;
}
return RenderPageWithFlags(page, form_handle_, flags);
}
ScopedFPDFBitmap EmbedderTest::RenderSavedPage(FPDF_PAGE page) {
return RenderSavedPageWithFlags(page, 0);
}
ScopedFPDFBitmap EmbedderTest::RenderSavedPageWithFlags(FPDF_PAGE page,
int flags) {
if (GetPageNumberForSavedPage(page) < 0) {
NOTREACHED();
return nullptr;
}
return RenderPageWithFlags(page, saved_form_handle_, flags);
}
// static
ScopedFPDFBitmap EmbedderTest::RenderPageWithFlags(FPDF_PAGE page,
FPDF_FORMHANDLE handle,
int flags) {
int width = static_cast<int>(FPDF_GetPageWidthF(page));
int height = static_cast<int>(FPDF_GetPageHeightF(page));
int alpha = FPDFPage_HasTransparency(page) ? 1 : 0;
ScopedFPDFBitmap bitmap(FPDFBitmap_Create(width, height, alpha));
FPDF_DWORD fill_color = alpha ? 0x00000000 : 0xFFFFFFFF;
FPDFBitmap_FillRect(bitmap.get(), 0, 0, width, height, fill_color);
FPDF_RenderPageBitmap(bitmap.get(), page, 0, 0, width, height, 0, flags);
FPDF_FFLDraw(handle, bitmap.get(), page, 0, 0, width, height, 0, flags);
return bitmap;
}
// static
ScopedFPDFBitmap EmbedderTest::RenderPage(FPDF_PAGE page) {
return RenderPageWithFlags(page, nullptr, 0);
}
#if defined(OS_WIN)
// static
std::vector<uint8_t> EmbedderTest::RenderPageWithFlagsToEmf(FPDF_PAGE page,
int flags) {
HDC dc = CreateEnhMetaFileA(nullptr, nullptr, nullptr, nullptr);
int width = static_cast<int>(FPDF_GetPageWidthF(page));
int height = static_cast<int>(FPDF_GetPageHeightF(page));
HRGN rgn = CreateRectRgn(0, 0, width, height);
SelectClipRgn(dc, rgn);
DeleteObject(rgn);
SelectObject(dc, GetStockObject(NULL_PEN));
SelectObject(dc, GetStockObject(WHITE_BRUSH));
// If a PS_NULL pen is used, the dimensions of the rectangle are 1 pixel less.
Rectangle(dc, 0, 0, width + 1, height + 1);
FPDF_RenderPage(dc, page, 0, 0, width, height, 0, flags);
HENHMETAFILE emf = CloseEnhMetaFile(dc);
size_t size_in_bytes = GetEnhMetaFileBits(emf, 0, nullptr);
std::vector<uint8_t> buffer(size_in_bytes);
GetEnhMetaFileBits(emf, size_in_bytes, buffer.data());
DeleteEnhMetaFile(emf);
return buffer;
}
// static
std::string EmbedderTest::GetPostScriptFromEmf(
pdfium::span<const uint8_t> emf_data) {
// This comes from Emf::InitFromData() in Chromium.
HENHMETAFILE emf = SetEnhMetaFileBits(emf_data.size(), emf_data.data());
if (!emf)
return std::string();
// This comes from Emf::Enumerator::Enumerator() in Chromium.
std::vector<const ENHMETARECORD*> records;
if (!EnumEnhMetaFile(nullptr, emf, &GetRecordProc, &records, nullptr)) {
DeleteEnhMetaFile(emf);
return std::string();
}
// This comes from PostScriptMetaFile::SafePlayback() in Chromium.
std::string ps_data;
for (const auto* record : records) {
if (record->iType != EMR_GDICOMMENT)
continue;
// PostScript data is encapsulated inside EMF comment records.
// The first two bytes of the comment indicate the string length. The rest
// is the actual string data.
const auto* comment = reinterpret_cast<const EMRGDICOMMENT*>(record);
const char* data = reinterpret_cast<const char*>(comment->Data);
uint16_t size = *reinterpret_cast<const uint16_t*>(data);
data += 2;
ps_data.append(data, size);
}
DeleteEnhMetaFile(emf);
return ps_data;
}
#endif // defined(OS_WIN)
FPDF_DOCUMENT EmbedderTest::OpenSavedDocument() {
return OpenSavedDocumentWithPassword(nullptr);
}
// static
int EmbedderTest::BytesPerPixelForFormat(int format) {
switch (format) {
case FPDFBitmap_Gray:
return 1;
case FPDFBitmap_BGR:
return 3;
case FPDFBitmap_BGRx:
case FPDFBitmap_BGRA:
return 4;
default:
NOTREACHED();
return 0;
}
}
FPDF_DOCUMENT EmbedderTest::OpenSavedDocumentWithPassword(
const char* password) {
memset(&saved_file_access_, 0, sizeof(saved_file_access_));
saved_file_access_.m_FileLen = data_string_.size();
saved_file_access_.m_GetBlock = GetBlockFromString;
// Copy data to prevent clearing it before saved document close.
saved_document_file_data_ = data_string_;
saved_file_access_.m_Param = &saved_document_file_data_;
saved_fake_file_access_ =
std::make_unique<FakeFileAccess>(&saved_file_access_);
EXPECT_TRUE(OpenDocumentHelper(
password, LinearizeOption::kDefaultLinearize,
JavaScriptOption::kEnableJavaScript, saved_fake_file_access_.get(),
&saved_document_, &saved_avail_, &saved_form_handle_));
return saved_document_;
}
void EmbedderTest::CloseSavedDocument() {
DCHECK(saved_document_);
FPDFDOC_ExitFormFillEnvironment(saved_form_handle_);
FPDF_CloseDocument(saved_document_);
FPDFAvail_Destroy(saved_avail_);
saved_form_handle_ = nullptr;
saved_document_ = nullptr;
saved_avail_ = nullptr;
}
FPDF_PAGE EmbedderTest::LoadSavedPage(int page_number) {
DCHECK(saved_form_handle_);
DCHECK(page_number >= 0);
DCHECK(!pdfium::Contains(saved_page_map_, page_number));
FPDF_PAGE page = FPDF_LoadPage(saved_document_, page_number);
if (!page)
return nullptr;
FORM_OnAfterLoadPage(page, saved_form_handle_);
FORM_DoPageAAction(page, saved_form_handle_, FPDFPAGE_AACTION_OPEN);
saved_page_map_[page_number] = page;
return page;
}
void EmbedderTest::CloseSavedPage(FPDF_PAGE page) {
DCHECK(saved_form_handle_);
int page_number = GetPageNumberForSavedPage(page);
if (page_number < 0) {
NOTREACHED();
return;
}
FORM_DoPageAAction(page, saved_form_handle_, FPDFPAGE_AACTION_CLOSE);
FORM_OnBeforeClosePage(page, saved_form_handle_);
FPDF_ClosePage(page);
saved_page_map_.erase(page_number);
}
void EmbedderTest::VerifySavedRendering(FPDF_PAGE page,
int width,
int height,
const char* md5) {
DCHECK(saved_document_);
DCHECK(page);
ScopedFPDFBitmap bitmap = RenderSavedPageWithFlags(page, FPDF_ANNOT);
CompareBitmap(bitmap.get(), width, height, md5);
}
void EmbedderTest::VerifySavedDocument(int width, int height, const char* md5) {
ASSERT_TRUE(OpenSavedDocument());
FPDF_PAGE page = LoadSavedPage(0);
VerifySavedRendering(page, width, height, md5);
CloseSavedPage(page);
CloseSavedDocument();
}
void EmbedderTest::SetWholeFileAvailable() {
DCHECK(fake_file_access_);
fake_file_access_->SetWholeFileAvailable();
}
FPDF_PAGE EmbedderTest::Delegate::GetPage(FPDF_FORMFILLINFO* info,
FPDF_DOCUMENT document,
int page_index) {
EmbedderTest* test = static_cast<EmbedderTest*>(info);
auto it = test->page_map_.find(page_index);
return it != test->page_map_.end() ? it->second : nullptr;
}
// static
void EmbedderTest::UnsupportedHandlerTrampoline(UNSUPPORT_INFO* info,
int type) {
EmbedderTest* test = static_cast<EmbedderTest*>(info);
test->delegate_->UnsupportedHandler(type);
}
// static
int EmbedderTest::AlertTrampoline(IPDF_JSPLATFORM* platform,
FPDF_WIDESTRING message,
FPDF_WIDESTRING title,
int type,
int icon) {
EmbedderTest* test = static_cast<EmbedderTest*>(platform);
return test->delegate_->Alert(message, title, type, icon);
}
// static
int EmbedderTest::SetTimerTrampoline(FPDF_FORMFILLINFO* info,
int msecs,
TimerCallback fn) {
EmbedderTest* test = static_cast<EmbedderTest*>(info);
return test->delegate_->SetTimer(msecs, fn);
}
// static
void EmbedderTest::KillTimerTrampoline(FPDF_FORMFILLINFO* info, int id) {
EmbedderTest* test = static_cast<EmbedderTest*>(info);
return test->delegate_->KillTimer(id);
}
// static
FPDF_PAGE EmbedderTest::GetPageTrampoline(FPDF_FORMFILLINFO* info,
FPDF_DOCUMENT document,
int page_index) {
return static_cast<EmbedderTest*>(info)->delegate_->GetPage(info, document,
page_index);
}
// static
void EmbedderTest::DoURIActionTrampoline(FPDF_FORMFILLINFO* info,
FPDF_BYTESTRING uri) {
EmbedderTest* test = static_cast<EmbedderTest*>(info);
return test->delegate_->DoURIAction(uri);
}
// static
void EmbedderTest::DoGoToActionTrampoline(FPDF_FORMFILLINFO* info,
int page_index,
int zoom_mode,
float* pos_array,
int array_size) {
EmbedderTest* test = static_cast<EmbedderTest*>(info);
return test->delegate_->DoGoToAction(info, page_index, zoom_mode, pos_array,
array_size);
}
// static
void EmbedderTest::OnFocusChangeTrampoline(FPDF_FORMFILLINFO* info,
FPDF_ANNOTATION annot,
int page_index) {
EmbedderTest* test = static_cast<EmbedderTest*>(info);
return test->delegate_->OnFocusChange(info, annot, page_index);
}
// static
void EmbedderTest::DoURIActionWithKeyboardModifierTrampoline(
FPDF_FORMFILLINFO* info,
FPDF_BYTESTRING uri,
int modifiers) {
EmbedderTest* test = static_cast<EmbedderTest*>(info);
return test->delegate_->DoURIActionWithKeyboardModifier(info, uri, modifiers);
}
// static
std::string EmbedderTest::HashBitmap(FPDF_BITMAP bitmap) {
int stride = FPDFBitmap_GetStride(bitmap);
int usable_bytes_per_row =
GetBitmapBytesPerPixel(bitmap) * FPDFBitmap_GetWidth(bitmap);
int height = FPDFBitmap_GetHeight(bitmap);
auto span = pdfium::make_span(
static_cast<uint8_t*>(FPDFBitmap_GetBuffer(bitmap)), stride * height);
CRYPT_md5_context context = CRYPT_MD5Start();
for (int i = 0; i < height; ++i)
CRYPT_MD5Update(&context, span.subspan(i * stride, usable_bytes_per_row));
uint8_t digest[16];
CRYPT_MD5Finish(&context, digest);
return CryptToBase16(digest);
}
#ifndef NDEBUG
// static
void EmbedderTest::WriteBitmapToPng(FPDF_BITMAP bitmap,
const std::string& filename) {
BitmapSaver::WriteBitmapToPng(bitmap, filename);
}
#endif
// static
void EmbedderTest::CompareBitmap(FPDF_BITMAP bitmap,
int expected_width,
int expected_height,
const char* expected_md5sum) {
ASSERT_EQ(expected_width, FPDFBitmap_GetWidth(bitmap));
ASSERT_EQ(expected_height, FPDFBitmap_GetHeight(bitmap));
// The expected stride is calculated using the same formula as in
// CFX_DIBitmap::CalculatePitchAndSize(), which sets the bitmap stride.
const int expected_stride =
(expected_width * GetBitmapBytesPerPixel(bitmap) * 8 + 31) / 32 * 4;
ASSERT_EQ(expected_stride, FPDFBitmap_GetStride(bitmap));
if (!expected_md5sum)
return;
EXPECT_EQ(expected_md5sum, HashBitmap(bitmap));
}
// static
int EmbedderTest::WriteBlockCallback(FPDF_FILEWRITE* pFileWrite,
const void* data,
unsigned long size) {
EmbedderTest* pThis = static_cast<EmbedderTest*>(pFileWrite);
pThis->data_string_.append(static_cast<const char*>(data), size);
if (pThis->filestream_.is_open())
pThis->filestream_.write(static_cast<const char*>(data), size);
return 1;
}
// static
int EmbedderTest::GetBlockFromString(void* param,
unsigned long pos,
unsigned char* buf,
unsigned long size) {
std::string* new_file = static_cast<std::string*>(param);
if (!new_file || pos + size < pos) {
NOTREACHED();
return 0;
}
if (pos + size > new_file->size()) {
NOTREACHED();
return 0;
}
memcpy(buf, new_file->data() + pos, size);
return 1;
}
// static
int EmbedderTest::GetPageNumberForPage(const PageNumberToHandleMap& page_map,
FPDF_PAGE page) {
for (const auto& it : page_map) {
if (it.second == page) {
int page_number = it.first;
DCHECK(page_number >= 0);
return page_number;
}
}
return -1;
}
int EmbedderTest::GetPageNumberForLoadedPage(FPDF_PAGE page) const {
return GetPageNumberForPage(page_map_, page);
}
int EmbedderTest::GetPageNumberForSavedPage(FPDF_PAGE page) const {
return GetPageNumberForPage(saved_page_map_, page);
}
#ifndef NDEBUG
void EmbedderTest::OpenPDFFileForWrite(const std::string& filename) {
filestream_.open(filename, std::ios_base::binary);
}
void EmbedderTest::ClosePDFFileForWrite() {
filestream_.close();
}
#endif