1//===- DirectoryScanner.cpp - Utility functions for DirectoryWatcher ------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "DirectoryScanner.h"
10
11#include "llvm/Support/Path.h"
12
13namespace clang {
14
15using namespace llvm;
16
17Optional<sys::fs::file_status> getFileStatus(StringRef Path) {
18  sys::fs::file_status Status;
19  std::error_code EC = status(Path, Status);
20  if (EC)
21    return None;
22  return Status;
23}
24
25std::vector<std::string> scanDirectory(StringRef Path) {
26  using namespace llvm::sys;
27  std::vector<std::string> Result;
28
29  std::error_code EC;
30  for (auto It = fs::directory_iterator(Path, EC),
31            End = fs::directory_iterator();
32       !EC && It != End; It.increment(EC)) {
33    auto status = getFileStatus(It->path());
34    if (!status.hasValue())
35      continue;
36    Result.emplace_back(sys::path::filename(It->path()));
37  }
38
39  return Result;
40}
41
42std::vector<DirectoryWatcher::Event>
43getAsFileEvents(const std::vector<std::string> &Scan) {
44  std::vector<DirectoryWatcher::Event> Events;
45  Events.reserve(Scan.size());
46
47  for (const auto &File : Scan) {
48    Events.emplace_back(DirectoryWatcher::Event{
49        DirectoryWatcher::Event::EventKind::Modified, File});
50  }
51  return Events;
52}
53
54} // namespace clang
55