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f36006cdf4
Move this directory and shorten the pdfium::base nested namespace to namespace pdfium. Bug: pdfium:2127 Change-Id: Ie65bc4c3e69e672ff04e2af0218b6f9fc1584d03 Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/116671 Reviewed-by: Thomas Sepez <tsepez@google.com> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
// Copyright 2018 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 "fpdfsdk/cpdfsdk_customaccess.h"
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#include "core/fxcrt/fx_safe_types.h"
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#include "core/fxcrt/numerics/safe_conversions.h"
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CPDFSDK_CustomAccess::CPDFSDK_CustomAccess(FPDF_FILEACCESS* pFileAccess)
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: m_FileAccess(*pFileAccess) {}
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CPDFSDK_CustomAccess::~CPDFSDK_CustomAccess() = default;
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FX_FILESIZE CPDFSDK_CustomAccess::GetSize() {
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return m_FileAccess.m_FileLen;
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}
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bool CPDFSDK_CustomAccess::ReadBlockAtOffset(pdfium::span<uint8_t> buffer,
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FX_FILESIZE offset) {
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if (buffer.empty() || offset < 0)
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return false;
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if (!pdfium::IsValueInRangeForNumericType<FX_FILESIZE>(buffer.size())) {
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return false;
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}
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FX_SAFE_FILESIZE new_pos = buffer.size();
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new_pos += offset;
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return new_pos.IsValid() && new_pos.ValueOrDie() <= GetSize() &&
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m_FileAccess.m_GetBlock(
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m_FileAccess.m_Param, pdfium::checked_cast<unsigned long>(offset),
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buffer.data(), pdfium::checked_cast<unsigned long>(buffer.size()));
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}
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