ajohnsen@google.com
7c53dfaf3f
BUG= R=kustermann@google.com, sgjesse@google.com Review URL: https://codereview.chromium.org//23483030 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@27064 260f80e4-7a28-3924-810f-c04153c831b5
107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/globals.h"
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#if defined(TARGET_OS_WINDOWS)
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#include "bin/file_system_watcher.h"
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#include "bin/eventhandler.h"
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#include <WinIoCtl.h> // NOLINT
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#include "bin/builtin.h"
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#include "bin/log.h"
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#include "bin/utils.h"
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namespace dart {
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namespace bin {
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bool FileSystemWatcher::IsSupported() {
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return true;
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}
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intptr_t FileSystemWatcher::WatchPath(const char* path,
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int events,
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bool recursive) {
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const wchar_t* name = StringUtils::Utf8ToWide(path);
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HANDLE dir = CreateFileW(name,
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FILE_LIST_DIRECTORY,
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FILE_SHARE_READ |
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FILE_SHARE_WRITE |
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FILE_SHARE_DELETE,
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NULL,
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OPEN_EXISTING,
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FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OVERLAPPED,
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NULL);
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free(const_cast<wchar_t*>(name));
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if (dir == INVALID_HANDLE_VALUE) {
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return -1;
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}
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int list_events = 0;
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if (events & (kCreate | kMove | kDelete)) {
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list_events |= FILE_NOTIFY_CHANGE_FILE_NAME |
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FILE_NOTIFY_CHANGE_DIR_NAME;
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}
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if (events & kModifyContent) list_events |= FILE_NOTIFY_CHANGE_LAST_WRITE;
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return reinterpret_cast<intptr_t>(
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new DirectoryWatchHandle(dir, list_events, recursive));
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}
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void FileSystemWatcher::UnwatchPath(intptr_t id) {
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// Nothing to do.
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}
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intptr_t FileSystemWatcher::GetSocketId(intptr_t id) {
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return id;
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}
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Dart_Handle FileSystemWatcher::ReadEvents(intptr_t id) {
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const intptr_t kEventSize = sizeof(FILE_NOTIFY_INFORMATION);
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DirectoryWatchHandle* dir = reinterpret_cast<DirectoryWatchHandle*>(id);
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intptr_t available = dir->Available();
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intptr_t max_count = available / kEventSize + 1;
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Dart_Handle events = Dart_NewList(max_count);
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uint8_t* buffer = new uint8_t[available];
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intptr_t bytes = dir->Read(buffer, available);
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intptr_t offset = 0;
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intptr_t i = 0;
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while (offset < bytes) {
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FILE_NOTIFY_INFORMATION* e =
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reinterpret_cast<FILE_NOTIFY_INFORMATION*>(buffer + offset);
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Dart_Handle event = Dart_NewList(3);
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int mask = 0;
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if (e->Action == FILE_ACTION_ADDED) mask |= kCreate;
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if (e->Action == FILE_ACTION_REMOVED) mask |= kDelete;
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if (e->Action == FILE_ACTION_MODIFIED) mask |= kModifyContent;
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if (e->Action == FILE_ACTION_RENAMED_OLD_NAME) mask |= kMove;
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if (e->Action == FILE_ACTION_RENAMED_NEW_NAME) mask |= kMove;
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Dart_ListSetAt(event, 0, Dart_NewInteger(mask));
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// Move events come in pairs. Just 'enable' by default.
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Dart_ListSetAt(event, 1, Dart_NewInteger(1));
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Dart_ListSetAt(event, 2, Dart_NewStringFromUTF16(
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reinterpret_cast<uint16_t*>(e->FileName), e->FileNameLength / 2));
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Dart_ListSetAt(events, i, event);
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i++;
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if (e->NextEntryOffset == 0) break;
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offset += e->NextEntryOffset;
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}
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delete[] buffer;
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return events;
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(TARGET_OS_WINDOWS)
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