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#include <optional>
13
14namespace clang {
15
16using namespace llvm;
17
18std::optional<sys::fs::file_status> getFileStatus(StringRef Path) {
19 sys::fs::file_status Status;
20 std::error_code EC = status(path: Path, result&: Status);
21 if (EC)
22 return std::nullopt;
23 return Status;
24}
25
26std::vector<std::string> scanDirectory(StringRef Path) {
27 using namespace llvm::sys;
28 std::vector<std::string> Result;
29
30 std::error_code EC;
31 for (auto It = fs::directory_iterator(Path, EC),
32 End = fs::directory_iterator();
33 !EC && It != End; It.increment(ec&: EC)) {
34 auto status = getFileStatus(Path: It->path());
35 if (!status)
36 continue;
37 Result.emplace_back(args: sys::path::filename(path: It->path()));
38 }
39
40 return Result;
41}
42
43std::vector<DirectoryWatcher::Event>
44getAsFileEvents(const std::vector<std::string> &Scan) {
45 std::vector<DirectoryWatcher::Event> Events;
46 Events.reserve(n: Scan.size());
47
48 for (const auto &File : Scan) {
49 Events.emplace_back(args: DirectoryWatcher::Event{
50 DirectoryWatcher::Event::EventKind::Modified, File});
51 }
52 return Events;
53}
54
55} // namespace clang
56