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 
13 namespace clang {
14 
15 using namespace llvm;
16 
17 Optional<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 
25 std::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 
42 std::vector<DirectoryWatcher::Event>
43 getAsFileEvents(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