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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/download/drag_download_util.h"
#include <stddef.h>
#include <memory>
#include <string>
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/thread_restrictions.h"
#include "build/build_config.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "url/gurl.h"
namespace content {
bool ParseDownloadMetadata(const std::u16string& metadata,
std::u16string* mime_type,
base::FilePath* file_name,
GURL* url) {
const char16_t separator = L':';
size_t mime_type_end_pos = metadata.find(separator);
if (mime_type_end_pos == std::u16string::npos)
return false;
size_t file_name_end_pos = metadata.find(separator, mime_type_end_pos + 1);
if (file_name_end_pos == std::u16string::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) {
std::u16string file_name_str = metadata.substr(
mime_type_end_pos + 1, file_name_end_pos - mime_type_end_pos - 1);
*file_name = base::FilePath::FromUTF16Unsafe(file_name_str);
}
if (url)
*url = parsed_url;
return true;
}
base::File CreateFileForDrop(base::FilePath* file_path) {
DCHECK(file_path && !file_path->empty());
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 BUILDFLAG(IS_WIN)
std::wstring suffix = L"-" + base::NumberToWString(seq);
#else
std::string suffix = "-" + base::NumberToString(seq);
#endif
new_file_path = file_path->InsertBeforeExtension(suffix);
}
// http://crbug.com/110709
base::ScopedAllowBlocking allow_blocking;
base::File file(
new_file_path, base::File::FLAG_CREATE | base::File::FLAG_WRITE);
if (file.IsValid()) {
*file_path = new_file_path;
return file;
}
}
return base::File();
}
PromiseFileFinalizer::PromiseFileFinalizer(
std::unique_ptr<DragDownloadFile> drag_file_downloader)
: drag_file_downloader_(std::move(drag_file_downloader)) {}
void PromiseFileFinalizer::OnDownloadCompleted(
const base::FilePath& file_path) {
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&PromiseFileFinalizer::Cleanup, this));
}
void PromiseFileFinalizer::OnDownloadAborted() {
GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&PromiseFileFinalizer::Cleanup, this));
}
PromiseFileFinalizer::~PromiseFileFinalizer() {}
void PromiseFileFinalizer::Cleanup() {
drag_file_downloader_.reset();
}
} // namespace content
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