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authorDan Sinclair <dsinclair@chromium.org>2018-03-28 17:04:16 +0000
committerChromium commit bot <commit-bot@chromium.org>2018-03-28 17:04:16 +0000
commit7aba472e80b073fb699c702a0971f31282737bb3 (patch)
tree81dc3ec3f2ace4bd9660289df16a7796a929c57f /fpdfsdk/cpdfsdk_memoryaccess.cpp
parent14094f22d9a7bfde8673689218a88d6feb02f3ee (diff)
downloadpdfium-7aba472e80b073fb699c702a0971f31282737bb3.tar.xz
Cleanup fsdk_define methods
This CL collects the various fsdk_define methods into a fsdk_define.cpp class. Methods only used in one place are moved into the appropriate anonymous namespaces. Change-Id: I75bfc7e8fe20711106fcf9821adeb41d69bf5848 Reviewed-on: https://pdfium-review.googlesource.com/29310 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
Diffstat (limited to 'fpdfsdk/cpdfsdk_memoryaccess.cpp')
-rw-r--r--fpdfsdk/cpdfsdk_memoryaccess.cpp32
1 files changed, 32 insertions, 0 deletions
diff --git a/fpdfsdk/cpdfsdk_memoryaccess.cpp b/fpdfsdk/cpdfsdk_memoryaccess.cpp
new file mode 100644
index 0000000000..2a5b7aed00
--- /dev/null
+++ b/fpdfsdk/cpdfsdk_memoryaccess.cpp
@@ -0,0 +1,32 @@
+// Copyright 2018 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 "fpdfsdk/cpdfsdk_memoryaccess.h"
+
+CPDFSDK_MemoryAccess::CPDFSDK_MemoryAccess(const uint8_t* pBuf,
+ FX_FILESIZE size)
+ : m_pBuf(pBuf), m_size(size) {}
+
+CPDFSDK_MemoryAccess::~CPDFSDK_MemoryAccess() = default;
+
+FX_FILESIZE CPDFSDK_MemoryAccess::GetSize() {
+ return m_size;
+}
+
+bool CPDFSDK_MemoryAccess::ReadBlock(void* buffer,
+ FX_FILESIZE offset,
+ size_t size) {
+ if (offset < 0)
+ return false;
+
+ FX_SAFE_FILESIZE newPos = pdfium::base::checked_cast<FX_FILESIZE>(size);
+ newPos += offset;
+ if (!newPos.IsValid() || newPos.ValueOrDie() > m_size)
+ return false;
+
+ memcpy(buffer, m_pBuf + offset, size);
+ return true;
+}