Create 1453 release branch for CEF1.

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/1453@1184 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

cef1/libcef/drag_download_util.cc

@@ -0,0 +1,114 @@
+// Copyright (c) 2011 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 "libcef/cef_thread.h"
+#include "libcef/drag_download_util.h"
+
+#include "base/bind.h"
+#include "base/string_util.h"
+#include "base/files/file_path.h"
+#include "base/file_util.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/string_number_conversions.h"
+#include "base/utf_string_conversions.h"
+#include "googleurl/src/gurl.h"
+#include "net/base/file_stream.h"
+#include "net/base/net_errors.h"
+
+using net::FileStream;
+
+namespace drag_download_util {
+
+bool ParseDownloadMetadata(const string16& metadata,
+                           string16* mime_type,
+                           base::FilePath* file_name,
+                           GURL* url) {
+  const char16 separator = L':';
+
+  size_t mime_type_end_pos = metadata.find(separator);
+  if (mime_type_end_pos == string16::npos)
+    return false;
+
+  size_t file_name_end_pos = metadata.find(separator, mime_type_end_pos + 1);
+  if (file_name_end_pos == string16::npos)
+    return false;
+
+  GURL parsed_url = GURL(metadata.substr(file_name_end_pos + 1));
+  if (!parsed_url.is_valid())
+    return false;
+
+  if (mime_type)
+    *mime_type = metadata.substr(0, mime_type_end_pos);
+  if (file_name) {
+    string16 file_name_str = metadata.substr(
+        mime_type_end_pos + 1, file_name_end_pos - mime_type_end_pos  - 1);
+#if defined(OS_WIN)
+    *file_name = base::FilePath(file_name_str);
+#else
+    *file_name = base::FilePath(UTF16ToUTF8(file_name_str));
+#endif
+  }
+  if (url)
+    *url = parsed_url;
+
+  return true;
+}
+
+FileStream* CreateFileStreamForDrop(base::FilePath* file_path) {
+  DCHECK(file_path && !file_path->empty());
+
+  scoped_ptr<FileStream> file_stream(new FileStream(NULL));
+  const int kMaxSeq = 99;
+  for (int seq = 0; seq <= kMaxSeq; seq++) {
+    base::FilePath new_file_path;
+    if (seq == 0) {
+      new_file_path = *file_path;
+    } else {
+#if defined(OS_WIN)
+      string16 suffix = ASCIIToUTF16("-") + base::IntToString16(seq);
+#else
+      std::string suffix = std::string("-") + base::IntToString(seq);
+#endif
+      new_file_path = file_path->InsertBeforeExtension(suffix);
+    }
+
+    // Explicitly (and redundantly check) for file -- despite the fact that our
+    // open won't overwrite -- just to avoid log spew.
+    if (!file_util::PathExists(new_file_path) &&
+        file_stream->OpenSync(new_file_path, base::PLATFORM_FILE_CREATE |
+                              base::PLATFORM_FILE_WRITE) == net::OK) {
+      *file_path = new_file_path;
+      return file_stream.release();
+    }
+  }
+
+  return NULL;
+}
+
+PromiseFileFinalizer::PromiseFileFinalizer(
+    DragDownloadFile* drag_file_downloader)
+    : drag_file_downloader_(drag_file_downloader) {
+}
+
+PromiseFileFinalizer::~PromiseFileFinalizer() {}
+
+void PromiseFileFinalizer::Cleanup() {
+  if (drag_file_downloader_.get())
+    drag_file_downloader_ = NULL;
+}
+
+void PromiseFileFinalizer::OnDownloadCompleted(
+    const base::FilePath& file_path) {
+  CefThread::PostTask(
+      CefThread::UI, FROM_HERE,
+      base::Bind(&PromiseFileFinalizer::Cleanup, this));
+}
+
+void PromiseFileFinalizer::OnDownloadAborted() {
+  CefThread::PostTask(
+      CefThread::UI, FROM_HERE,
+      base::Bind(&PromiseFileFinalizer::Cleanup, this));
+}
+
+}  // namespace drag_download_util