ccls/src/filesystem.cc
2019-10-24 18:37:54 -07:00

60 lines
1.9 KiB
C++

// Copyright 2017-2018 ccls Authors
// SPDX-License-Identifier: Apache-2.0
#include "filesystem.hh"
using namespace llvm;
#include "utils.hh"
#include <set>
#include <vector>
void GetFilesInFolder(std::string folder, bool recursive, bool dir_prefix,
const std::function<void(const std::string &)> &handler) {
ccls::EnsureEndsInSlash(folder);
sys::fs::file_status Status;
if (sys::fs::status(folder, Status, true))
return;
sys::fs::UniqueID ID;
std::vector<std::string> curr{folder};
std::vector<std::pair<std::string, sys::fs::file_status>> succ;
std::set<sys::fs::UniqueID> seen{Status.getUniqueID()};
while (curr.size() || succ.size()) {
if (curr.empty()) {
for (auto &it : succ)
if (!seen.count(it.second.getUniqueID()))
curr.push_back(std::move(it.first));
succ.clear();
} else {
std::error_code ec;
std::string folder1 = curr.back();
curr.pop_back();
for (sys::fs::directory_iterator I(folder1, ec, false), E; I != E && !ec;
I.increment(ec)) {
std::string path = I->path(), filename = sys::path::filename(path);
if ((filename[0] == '.' && filename != ".ccls") ||
sys::fs::status(path, Status, false))
continue;
if (sys::fs::is_symlink_file(Status)) {
if (sys::fs::status(path, Status, true))
continue;
if (sys::fs::is_directory(Status)) {
if (recursive)
succ.emplace_back(path, Status);
continue;
}
}
if (sys::fs::is_regular_file(Status)) {
if (!dir_prefix)
path = path.substr(folder.size());
handler(sys::path::convert_to_slash(path));
} else if (recursive && sys::fs::is_directory(Status) &&
!seen.count(ID = Status.getUniqueID())) {
curr.push_back(path);
seen.insert(ID);
}
}
}
}
}