printing/metafile.cc

   1 // Copyright 2014 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 "printing/metafile.h"
   6
   7 #include <vector>
   8
   9 #include "base/files/file.h"
  10 #include "base/numerics/safe_conversions.h"
  11
  12 namespace printing {
  13
  14 MetafilePlayer::MetafilePlayer() {
  15 }
  16
  17 MetafilePlayer::~MetafilePlayer() {
  18 }
  19
  20 Metafile::Metafile() {
  21 }
  22
  23 Metafile::~Metafile() {
  24 }
  25
  26 bool Metafile::GetDataAsVector(std::vector<char>* buffer) const {
  27   buffer->resize(GetDataSize());
  28   if (buffer->empty())
  29     return false;
  30   return GetData(&buffer->front(),
  31                  base::checked_cast<uint32_t>(buffer->size()));
  32 }
  33
  34 bool Metafile::SaveTo(base::File* file) const {
  35   if (!file->IsValid())
  36     return false;
  37
  38   std::vector<char> buffer;
  39   if (!GetDataAsVector(&buffer))
  40     return false;
  41
  42   int size = base::checked_cast<int>(buffer.size());
  43   if (file->WriteAtCurrentPos(&buffer[0], size) != size) {
  44     DLOG(ERROR) << "Failed to save file.";
  45     return false;
  46   }
  47   return true;
  48 }
  49
  50 }  // namespace printing