Merge XFA to PDFium master at 4dc95e7 on 10/28/2014
[pdfium.git] / xfa_test / pdf / pdfium / pdfium_mem_buffer_file_read.cc
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "pdf/pdfium/pdfium_mem_buffer_file_read.h"
6
7 #include <string.h>
8
9 namespace chrome_pdf {
10
11 PDFiumMemBufferFileRead::PDFiumMemBufferFileRead(const void* data,
12                                                  size_t size) {
13   m_FileLen = size;
14   m_Param = this;
15   m_GetBlock = &GetBlock;
16   data_ = reinterpret_cast<const unsigned char*>(data);
17 }
18
19 PDFiumMemBufferFileRead::~PDFiumMemBufferFileRead() {
20 }
21
22 int PDFiumMemBufferFileRead::GetBlock(void* param,
23                                       unsigned long position,
24                                       unsigned char* buf,
25                                       unsigned long size) {
26   const PDFiumMemBufferFileRead* data =
27       reinterpret_cast<const PDFiumMemBufferFileRead*>(param);
28   if (!data || position + size > data->m_FileLen)
29     return 0;
30   memcpy(buf, data->data_ + position, size);
31   return 1;
32 }
33
34 }  // namespace chrome_pdf