Wrapers for PRINTER_INFO_* and DRIVER_INFO_*.

printing/backend/printing_info_win.cc

+// Copyright (c) 2012 The Chromium 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 "printing/backend/printing_info_win.h"
+
+#include "base/logging.h"
+
+namespace printing {
+
+namespace internal {
+
+uint8* GetDriverInfo(HANDLE printer, int level) {
+  DWORD size = 0;
+  ::GetPrinterDriver(printer, NULL, level, NULL, 0, &size);
+  if (size == 0) {
+    return NULL;
+  }
+  scoped_array<uint8> buffer(new uint8[size]);
+  memset(buffer.get(), 0, size);
+  if (!::GetPrinterDriver(printer, NULL, level, buffer.get(), size, &size)) {
+    return NULL;
+  }
+  return buffer.release();
+}
+
+uint8* GetPrinterInfo(HANDLE printer, int level) {
+  DWORD size = 0;
+  ::GetPrinter(printer, level, NULL, 0, &size);
+  if (size == 0) {
+    LOG(WARNING) << "Failed to get size of PRINTER_INFO_" << level <<
+                    ", error = " << GetLastError();
+    return NULL;
+  }
+  scoped_array<uint8> buffer(new uint8[size]);
+  memset(buffer.get(), 0, size);
+  if (!::GetPrinter(printer, level, buffer.get(), size, &size)) {
+    LOG(WARNING) << "Failed to get PRINTER_INFO_" << level <<
+                    ", error = " << GetLastError();
+    return NULL;
+  }
+  return buffer.release();
+}
+
+}  // namespace internal
+
+DevMode::DevMode() : dev_mode_(NULL) {
+}
+
+bool DevMode::Init(HANDLE printer) {
+  if (info_9_.Init(printer))
+    dev_mode_ = info_9_.get()->pDevMode;
+
+  if (!dev_mode_ && info_8_.Init(printer))
+    dev_mode_ = info_8_.get()->pDevMode;
+
+  if (!dev_mode_ && info_2_.Init(printer))
+    dev_mode_ = info_2_.get()->pDevMode;
+
+  return dev_mode_ != NULL;
+}
+
+DevMode::~DevMode() {
+}
+
+}  // namespace printing