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DirectoryWalker.cpp
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DirectoryWalker.cpp
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#include "DirectoryWalker.hpp"
#include <iostream>
#include <queue>
DirectoryWalker::DirectoryWalker(const std::string directoryName)
: Queue(0), Directory(directoryName) {}
void DirectoryWalker::Traverse(const bool descend = false) {
Completed = false;
Worker = std::thread([this, descend]() {
std::cerr << "Retrieving list of files..." << std::endl;
// TODO: Check that the directory is valid
// Push the starting directory onto the queue so the loop is the same for
// each directory
std::queue<boost::filesystem::path> toBeListed;
toBeListed.push(Directory);
for (;;) {
if (toBeListed.empty())
break;
boost::filesystem::path currentDir = toBeListed.front();
toBeListed.pop();
for (boost::filesystem::directory_entry &entry :
boost::filesystem::directory_iterator(currentDir)) {
// TODO: Print out number of entries walked in an ncurses window?
// Add any found directories to the traversal queue
if (boost::filesystem::is_directory(entry)) {
if (descend)
toBeListed.push(entry);
continue;
}
Queue.push(new boost::filesystem::path(entry));
}
}
Completed = true;
});
}
std::pair<std::optional<boost::filesystem::path>, bool>
DirectoryWalker::GetNext() {
boost::filesystem::path *entry;
bool success = Queue.pop(entry);
if (!success)
return {std::nullopt, Completed};
auto retval = boost::filesystem::path(*entry);
delete entry;
return {retval, Completed};
}
void DirectoryWalker::Finish() {
// If the directory traversal has completed, join the thread.
// This is probably not a great way to do this. Also because we don't actually
// check that the traversal has completed (although if the thread has finished
// we can assume it has).
if (Worker.joinable()) {
Worker.join();
}
}