From 8a94fb7db0e62d602a23d17254d1002f7c607bd4 Mon Sep 17 00:00:00 2001
From: Daniel Wolf <dwolf@dannad.de>
Date: Fri, 18 Jun 2021 22:00:01 +0200
Subject: [PATCH] Replace boost::filesystem with std::filesystem

This allows us to use a header-only copy of Boost
---
 rhubarb/CMakeLists.txt                        |  2 +-
 rhubarb/src/audio/OggVorbisFileReader.cpp     |  2 +-
 rhubarb/src/audio/OggVorbisFileReader.h       |  6 ++---
 rhubarb/src/audio/WaveFileReader.cpp          |  2 +-
 rhubarb/src/audio/WaveFileReader.h            |  6 ++---
 rhubarb/src/audio/audioFileReading.cpp        |  6 ++---
 rhubarb/src/audio/audioFileReading.h          |  4 ++--
 rhubarb/src/exporters/Exporter.h              |  6 ++---
 rhubarb/src/exporters/JsonExporter.cpp        |  3 +--
 rhubarb/src/exporters/XmlExporter.cpp         |  3 +--
 rhubarb/src/lib/rhubarbLib.cpp                |  2 +-
 rhubarb/src/lib/rhubarbLib.h                  |  4 ++--
 .../src/recognition/PhoneticRecognizer.cpp    |  4 ++--
 .../recognition/PocketSphinxRecognizer.cpp    | 10 ++++----
 rhubarb/src/recognition/languageModels.cpp    | 10 ++++----
 rhubarb/src/recognition/pocketSphinxTools.cpp |  2 +-
 rhubarb/src/recognition/pocketSphinxTools.h   |  4 ++--
 rhubarb/src/rhubarb/main.cpp                  | 23 +++++++++----------
 rhubarb/src/rhubarb/semanticEntries.cpp       |  6 ++---
 rhubarb/src/rhubarb/semanticEntries.h         |  8 +++----
 rhubarb/src/rhubarb/sinks.cpp                 |  6 ++---
 rhubarb/src/rhubarb/sinks.h                   |  4 ++--
 rhubarb/src/tools/NiceCmdLineOutput.cpp       |  2 +-
 rhubarb/src/tools/fileTools.cpp               |  2 +-
 rhubarb/src/tools/fileTools.h                 |  5 ++--
 rhubarb/src/tools/platformTools.cpp           | 19 +++++----------
 rhubarb/src/tools/platformTools.h             | 10 ++++----
 rhubarb/src/tools/textFiles.cpp               | 11 ++++-----
 rhubarb/src/tools/textFiles.h                 |  4 ++--
 29 files changed, 83 insertions(+), 93 deletions(-)

diff --git a/rhubarb/CMakeLists.txt b/rhubarb/CMakeLists.txt
index ade5059..c2981e5 100644
--- a/rhubarb/CMakeLists.txt
+++ b/rhubarb/CMakeLists.txt
@@ -65,7 +65,7 @@ set(Boost_USE_STATIC_LIBS ON) # Use static libs
 set(Boost_USE_MULTITHREADED ON) # Enable multithreading support
 set(Boost_USE_STATIC_RUNTIME ON) # Use static C++ runtime
 set(Boost_NO_BOOST_CMAKE ON) # Workaround for https://gitlab.kitware.com/cmake/cmake/-/issues/18865
-find_package(Boost 1.54 REQUIRED COMPONENTS filesystem locale system)
+find_package(Boost 1.54 REQUIRED)
 include_directories(SYSTEM ${Boost_INCLUDE_DIRS})
 link_libraries(${Boost_LIBRARIES}) # Just about every project needs Boost
 
diff --git a/rhubarb/src/audio/OggVorbisFileReader.cpp b/rhubarb/src/audio/OggVorbisFileReader.cpp
index f84aaa4..fc86532 100644
--- a/rhubarb/src/audio/OggVorbisFileReader.cpp
+++ b/rhubarb/src/audio/OggVorbisFileReader.cpp
@@ -6,7 +6,7 @@
 #include <format.h>
 #include "tools/fileTools.h"
 
-using boost::filesystem::path;
+using std::filesystem::path;
 using std::vector;
 using std::make_shared;
 using std::ifstream;
diff --git a/rhubarb/src/audio/OggVorbisFileReader.h b/rhubarb/src/audio/OggVorbisFileReader.h
index 76b0324..a143211 100644
--- a/rhubarb/src/audio/OggVorbisFileReader.h
+++ b/rhubarb/src/audio/OggVorbisFileReader.h
@@ -1,11 +1,11 @@
 #pragma once
 
 #include "AudioClip.h"
-#include <boost/filesystem/path.hpp>
+#include <filesystem>
 
 class OggVorbisFileReader : public AudioClip {
 public:
-	OggVorbisFileReader(const boost::filesystem::path& filePath);
+	OggVorbisFileReader(const std::filesystem::path& filePath);
 	std::unique_ptr<AudioClip> clone() const override;
 	int getSampleRate() const override { return sampleRate; }
 	size_type size() const override { return sampleCount; }
@@ -13,7 +13,7 @@ public:
 private:
 	SampleReader createUnsafeSampleReader() const override;
 
-	boost::filesystem::path filePath;
+	std::filesystem::path filePath;
 	int sampleRate;
 	int channelCount;
 	size_type sampleCount;
diff --git a/rhubarb/src/audio/WaveFileReader.cpp b/rhubarb/src/audio/WaveFileReader.cpp
index 5e4ae58..df24ccb 100644
--- a/rhubarb/src/audio/WaveFileReader.cpp
+++ b/rhubarb/src/audio/WaveFileReader.cpp
@@ -12,7 +12,7 @@ using namespace little_endian;
 using std::unique_ptr;
 using std::make_unique;
 using std::make_shared;
-using boost::filesystem::path;
+using std::filesystem::path;
 
 #define INT24_MIN (-8388608)
 #define INT24_MAX 8388607
diff --git a/rhubarb/src/audio/WaveFileReader.h b/rhubarb/src/audio/WaveFileReader.h
index df68f19..c200f35 100644
--- a/rhubarb/src/audio/WaveFileReader.h
+++ b/rhubarb/src/audio/WaveFileReader.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include <boost/filesystem/path.hpp>
+#include <filesystem>
 #include "AudioClip.h"
 
 enum class SampleFormat {
@@ -12,7 +12,7 @@ enum class SampleFormat {
 
 class WaveFileReader : public AudioClip {
 public:
-	WaveFileReader(const boost::filesystem::path& filePath);
+	WaveFileReader(const std::filesystem::path& filePath);
 	std::unique_ptr<AudioClip> clone() const override;
 	int getSampleRate() const override;
 	size_type size() const override;
@@ -29,7 +29,7 @@ private:
 		std::streampos dataOffset;
 	};
 
-	boost::filesystem::path filePath;
+	std::filesystem::path filePath;
 	WaveFormatInfo formatInfo;
 };
 
diff --git a/rhubarb/src/audio/audioFileReading.cpp b/rhubarb/src/audio/audioFileReading.cpp
index f5b2d4c..3cccfbb 100644
--- a/rhubarb/src/audio/audioFileReading.cpp
+++ b/rhubarb/src/audio/audioFileReading.cpp
@@ -4,7 +4,7 @@
 #include <boost/algorithm/string.hpp>
 #include "OggVorbisFileReader.h"
 
-using boost::filesystem::path;
+using std::filesystem::path;
 using std::string;
 using std::runtime_error;
 using fmt::format;
@@ -12,7 +12,7 @@ using fmt::format;
 std::unique_ptr<AudioClip> createAudioFileClip(path filePath) {
 	try {
 		const string extension =
-			boost::algorithm::to_lower_copy(boost::filesystem::extension(filePath));
+			boost::algorithm::to_lower_copy(filePath.extension().u8string());
 		if (extension == ".wav") {
 			return std::make_unique<WaveFileReader>(filePath);
 		}
@@ -24,6 +24,6 @@ std::unique_ptr<AudioClip> createAudioFileClip(path filePath) {
 			extension
 		));
 	} catch (...) {
-		std::throw_with_nested(runtime_error(format("Could not open sound file {}.", filePath)));
+		std::throw_with_nested(runtime_error(format("Could not open sound file {}.", filePath.u8string())));
 	}
 }
diff --git a/rhubarb/src/audio/audioFileReading.h b/rhubarb/src/audio/audioFileReading.h
index daa8412..78beef2 100644
--- a/rhubarb/src/audio/audioFileReading.h
+++ b/rhubarb/src/audio/audioFileReading.h
@@ -2,6 +2,6 @@
 
 #include <memory>
 #include "AudioClip.h"
-#include <boost/filesystem.hpp>
+#include <filesystem>
 
-std::unique_ptr<AudioClip> createAudioFileClip(boost::filesystem::path filePath);
+std::unique_ptr<AudioClip> createAudioFileClip(std::filesystem::path filePath);
diff --git a/rhubarb/src/exporters/Exporter.h b/rhubarb/src/exporters/Exporter.h
index 1be1092..0be901c 100644
--- a/rhubarb/src/exporters/Exporter.h
+++ b/rhubarb/src/exporters/Exporter.h
@@ -2,19 +2,19 @@
 
 #include "core/Shape.h"
 #include "time/ContinuousTimeline.h"
-#include <boost/filesystem/path.hpp>
+#include <filesystem>
 
 class ExporterInput {
 public:
 	ExporterInput(
-		const boost::filesystem::path& inputFilePath,
+		const std::filesystem::path& inputFilePath,
 		const JoiningContinuousTimeline<Shape>& animation,
 		const ShapeSet& targetShapeSet) :
 		inputFilePath(inputFilePath),
 		animation(animation),
 		targetShapeSet(targetShapeSet) {}
 
-	boost::filesystem::path inputFilePath;
+	std::filesystem::path inputFilePath;
 	JoiningContinuousTimeline<Shape> animation;
 	ShapeSet targetShapeSet;
 };
diff --git a/rhubarb/src/exporters/JsonExporter.cpp b/rhubarb/src/exporters/JsonExporter.cpp
index 1cd3c50..60ee841 100644
--- a/rhubarb/src/exporters/JsonExporter.cpp
+++ b/rhubarb/src/exporters/JsonExporter.cpp
@@ -1,7 +1,6 @@
 #include "JsonExporter.h"
 #include "exporterTools.h"
 #include "tools/stringTools.h"
-#include <boost/filesystem.hpp>
 
 using std::string;
 
@@ -11,7 +10,7 @@ void JsonExporter::exportAnimation(const ExporterInput& input, std::ostream& out
 	// the formatting.
 	outputStream << "{\n";
 	outputStream << "  \"metadata\": {\n";
-	outputStream << "    \"soundFile\": \"" << escapeJsonString(absolute(input.inputFilePath).string()) << "\",\n";
+	outputStream << "    \"soundFile\": \"" << escapeJsonString(absolute(input.inputFilePath).u8string()) << "\",\n";
 	outputStream << "    \"duration\": " << formatDuration(input.animation.getRange().getDuration()) << "\n";
 	outputStream << "  },\n";
 	outputStream << "  \"mouthCues\": [\n";
diff --git a/rhubarb/src/exporters/XmlExporter.cpp b/rhubarb/src/exporters/XmlExporter.cpp
index 763f473..073ef68 100644
--- a/rhubarb/src/exporters/XmlExporter.cpp
+++ b/rhubarb/src/exporters/XmlExporter.cpp
@@ -3,7 +3,6 @@
 #include <boost/property_tree/xml_parser.hpp>
 #include <boost/version.hpp>
 #include "exporterTools.h"
-#include <boost/filesystem.hpp>
 
 using std::string;
 using boost::property_tree::ptree;
@@ -12,7 +11,7 @@ void XmlExporter::exportAnimation(const ExporterInput& input, std::ostream& outp
 	ptree tree;
 
 	// Add metadata
-	tree.put("rhubarbResult.metadata.soundFile", absolute(input.inputFilePath).string());
+	tree.put("rhubarbResult.metadata.soundFile", absolute(input.inputFilePath).u8string());
 	tree.put(
 		"rhubarbResult.metadata.duration",
 		formatDuration(input.animation.getRange().getDuration())
diff --git a/rhubarb/src/lib/rhubarbLib.cpp b/rhubarb/src/lib/rhubarbLib.cpp
index 5f8460f..8b624cb 100644
--- a/rhubarb/src/lib/rhubarbLib.cpp
+++ b/rhubarb/src/lib/rhubarbLib.cpp
@@ -6,7 +6,7 @@
 
 using boost::optional;
 using std::string;
-using boost::filesystem::path;
+using std::filesystem::path;
 
 JoiningContinuousTimeline<Shape> animateAudioClip(
 	const AudioClip& audioClip,
diff --git a/rhubarb/src/lib/rhubarbLib.h b/rhubarb/src/lib/rhubarbLib.h
index ae841a6..6d7c4d1 100644
--- a/rhubarb/src/lib/rhubarbLib.h
+++ b/rhubarb/src/lib/rhubarbLib.h
@@ -4,7 +4,7 @@
 #include "time/ContinuousTimeline.h"
 #include "audio/AudioClip.h"
 #include "tools/progress.h"
-#include <boost/filesystem.hpp>
+#include <filesystem>
 #include "animation/targetShapeSet.h"
 #include "recognition/Recognizer.h"
 
@@ -17,7 +17,7 @@ JoiningContinuousTimeline<Shape> animateAudioClip(
 	ProgressSink& progressSink);
 
 JoiningContinuousTimeline<Shape> animateWaveFile(
-	boost::filesystem::path filePath,
+	std::filesystem::path filePath,
 	const boost::optional<std::string>& dialog,
 	const Recognizer& recognizer,
 	const ShapeSet& targetShapeSet,
diff --git a/rhubarb/src/recognition/PhoneticRecognizer.cpp b/rhubarb/src/recognition/PhoneticRecognizer.cpp
index 262ba48..68fb6fc 100644
--- a/rhubarb/src/recognition/PhoneticRecognizer.cpp
+++ b/rhubarb/src/recognition/PhoneticRecognizer.cpp
@@ -17,9 +17,9 @@ static lambda_unique_ptr<ps_decoder_t> createDecoder(optional<std::string> dialo
 		cmd_ln_init(
 			nullptr, ps_args(), true,
 			// Set acoustic model
-			"-hmm", (getSphinxModelDirectory() / "acoustic-model").string().c_str(),
+			"-hmm", (getSphinxModelDirectory() / "acoustic-model").u8string().c_str(),
 			// Set phonetic language model
-			"-allphone", (getSphinxModelDirectory() / "en-us-phone.lm.bin").string().c_str(),
+			"-allphone", (getSphinxModelDirectory() / "en-us-phone.lm.bin").u8string().c_str(),
 			"-allphone_ci", "yes",
 			// Set language model probability weight.
 			// Low values (<= 0.4) can lead to fluttering animation.
diff --git a/rhubarb/src/recognition/PocketSphinxRecognizer.cpp b/rhubarb/src/recognition/PocketSphinxRecognizer.cpp
index ca41050..9eaf5e3 100644
--- a/rhubarb/src/recognition/PocketSphinxRecognizer.cpp
+++ b/rhubarb/src/recognition/PocketSphinxRecognizer.cpp
@@ -20,7 +20,7 @@ using std::unique_ptr;
 using std::string;
 using std::vector;
 using std::map;
-using boost::filesystem::path;
+using std::filesystem::path;
 using std::regex;
 using std::regex_replace;
 using boost::optional;
@@ -58,10 +58,10 @@ void addMissingDictionaryWords(const vector<string>& words, ps_decoder_t& decode
 lambda_unique_ptr<ngram_model_t> createDefaultLanguageModel(ps_decoder_t& decoder) {
 	path modelPath = getSphinxModelDirectory() / "en-us.lm.bin";
 	lambda_unique_ptr<ngram_model_t> result(
-		ngram_model_read(decoder.config, modelPath.string().c_str(), NGRAM_AUTO, decoder.lmath),
+		ngram_model_read(decoder.config, modelPath.u8string().c_str(), NGRAM_AUTO, decoder.lmath),
 		[](ngram_model_t* lm) { ngram_model_free(lm); });
 	if (!result) {
-		throw runtime_error(fmt::format("Error reading language model from {}.", modelPath));
+		throw runtime_error(fmt::format("Error reading language model from {}.", modelPath.u8string()));
 	}
 
 	return result;
@@ -120,9 +120,9 @@ static lambda_unique_ptr<ps_decoder_t> createDecoder(optional<std::string> dialo
 		cmd_ln_init(
 			nullptr, ps_args(), true,
 			// Set acoustic model
-			"-hmm", (getSphinxModelDirectory() / "acoustic-model").string().c_str(),
+			"-hmm", (getSphinxModelDirectory() / "acoustic-model").u8string().c_str(),
 			// Set pronunciation dictionary
-			"-dict", (getSphinxModelDirectory() / "cmudict-en-us.dict").string().c_str(),
+			"-dict", (getSphinxModelDirectory() / "cmudict-en-us.dict").u8string().c_str(),
 			// Add noise against zero silence
 			// (see http://cmusphinx.sourceforge.net/wiki/faq#qwhy_my_accuracy_is_poor)
 			"-dither", "yes",
diff --git a/rhubarb/src/recognition/languageModels.cpp b/rhubarb/src/recognition/languageModels.cpp
index f46d2d6..cfb3723 100644
--- a/rhubarb/src/recognition/languageModels.cpp
+++ b/rhubarb/src/recognition/languageModels.cpp
@@ -5,7 +5,7 @@
 #include <map>
 #include <tuple>
 #include "tools/platformTools.h"
-#include <boost/filesystem/fstream.hpp>
+#include <fstream>
 #include "core/appInfo.h"
 #include <cmath>
 #include <gsl_util.h>
@@ -17,7 +17,7 @@ using std::map;
 using std::tuple;
 using std::get;
 using std::endl;
-using boost::filesystem::path;
+using std::filesystem::path;
 
 using Unigram = string;
 using Bigram = tuple<string, string>;
@@ -151,7 +151,7 @@ void createLanguageModelFile(const vector<string>& words, const path& filePath)
 	map<Bigram, double> bigramBackoffWeights =
 		getBigramBackoffWeights(bigramCounts, bigramProbabilities, trigramCounts, discountMass);
 
-	boost::filesystem::ofstream file(filePath);
+	std::ofstream file(filePath);
 	file << "Generated by " << appName << " " << appVersion << endl << endl;
 
 	file << "\\data\\" << endl;
@@ -193,9 +193,9 @@ lambda_unique_ptr<ngram_model_t> createLanguageModel(
 ) {
 	path tempFilePath = getTempFilePath();
 	createLanguageModelFile(words, tempFilePath);
-	auto deleteTempFile = gsl::finally([&]() { boost::filesystem::remove(tempFilePath); });
+	auto deleteTempFile = gsl::finally([&]() { std::filesystem::remove(tempFilePath); });
 
 	return lambda_unique_ptr<ngram_model_t>(
-		ngram_model_read(decoder.config, tempFilePath.string().c_str(), NGRAM_ARPA, decoder.lmath),
+		ngram_model_read(decoder.config, tempFilePath.u8string().c_str(), NGRAM_ARPA, decoder.lmath),
 		[](ngram_model_t* lm) { ngram_model_free(lm); });
 }
diff --git a/rhubarb/src/recognition/pocketSphinxTools.cpp b/rhubarb/src/recognition/pocketSphinxTools.cpp
index d571cc5..6736ec8 100644
--- a/rhubarb/src/recognition/pocketSphinxTools.cpp
+++ b/rhubarb/src/recognition/pocketSphinxTools.cpp
@@ -19,7 +19,7 @@ using std::invalid_argument;
 using std::unique_ptr;
 using std::string;
 using std::vector;
-using boost::filesystem::path;
+using std::filesystem::path;
 using std::regex;
 using boost::optional;
 using std::chrono::duration_cast;
diff --git a/rhubarb/src/recognition/pocketSphinxTools.h b/rhubarb/src/recognition/pocketSphinxTools.h
index bd47a80..2c34a2e 100644
--- a/rhubarb/src/recognition/pocketSphinxTools.h
+++ b/rhubarb/src/recognition/pocketSphinxTools.h
@@ -4,7 +4,7 @@
 #include "core/Phone.h"
 #include "audio/AudioClip.h"
 #include "tools/progress.h"
-#include <boost/filesystem/path.hpp>
+#include <filesystem>
 
 extern "C" {
 #include <pocketsphinx.h>
@@ -32,7 +32,7 @@ BoundedTimeline<Phone> recognizePhones(
 
 constexpr int sphinxSampleRate = 16000;
 
-const boost::filesystem::path& getSphinxModelDirectory();
+const std::filesystem::path& getSphinxModelDirectory();
 
 JoiningTimeline<void> getNoiseSounds(TimeRange utteranceTimeRange, const Timeline<Phone>& phones);
 
diff --git a/rhubarb/src/rhubarb/main.cpp b/rhubarb/src/rhubarb/main.cpp
index 4e512a9..85eec62 100644
--- a/rhubarb/src/rhubarb/main.cpp
+++ b/rhubarb/src/rhubarb/main.cpp
@@ -9,10 +9,9 @@
 #include <gsl_util.h>
 #include "exporters/Exporter.h"
 #include "time/ContinuousTimeline.h"
-#include <boost/filesystem/operations.hpp>
 #include "tools/stringTools.h"
 #include <boost/range/adaptor/transformed.hpp>
-#include <boost/filesystem/fstream.hpp>
+#include <fstream>
 #include "tools/parallel.h"
 #include "tools/exceptions.h"
 #include "tools/textFiles.h"
@@ -39,7 +38,8 @@ using std::unique_ptr;
 using std::make_unique;
 using std::shared_ptr;
 using std::make_shared;
-using boost::filesystem::path;
+using std::filesystem::path;
+using std::filesystem::u8path;
 using boost::adaptors::transformed;
 using boost::optional;
 
@@ -64,7 +64,7 @@ namespace TCLAP {
 }
 
 shared_ptr<logging::Sink> createFileSink(const path& path, logging::Level minLevel) {
-	auto file = make_shared<boost::filesystem::ofstream>();
+	auto file = make_shared<std::ofstream>();
 	file->exceptions(std::ifstream::failbit | std::ifstream::badbit);
 	file->open(path);
 	auto FileSink =
@@ -121,9 +121,8 @@ int main(int platformArgc, char* platformArgv[]) {
 	shared_ptr<logging::Sink> defaultSink = make_shared<NiceStderrSink>(defaultMinStderrLevel);
 	logging::addSink(defaultSink);
 
-	// Use UTF-8 throughout
+	// Make sure the console uses UTF-8 on all platforms including Windows
 	useUtf8ForConsole();
-	useUtf8ForBoostFilesystem();
 
 	// Convert command-line arguments to UTF-8
 	const vector<string> args = argsToUtf8(platformArgc, platformArgv);
@@ -229,7 +228,7 @@ int main(int platformArgc, char* platformArgv[]) {
 		logging::removeSink(defaultSink);
 		// ... to log file
 		if (logFileName.isSet()) {
-			auto fileSink = createFileSink(path(logFileName.getValue()), logLevel.getValue());
+			auto fileSink = createFileSink(u8path(logFileName.getValue()), logLevel.getValue());
 			logging::addSink(fileSink);
 		}
 
@@ -237,7 +236,7 @@ int main(int platformArgc, char* platformArgv[]) {
 		if (maxThreadCount.getValue() < 1) {
 			throw std::runtime_error("Thread count must be 1 or higher.");
 		}
-		path inputFilePath(inputFileName.getValue());
+		path inputFilePath = u8path(inputFileName.getValue());
 		ShapeSet targetShapeSet = getTargetShapeSet(extendedShapes.getValue());
 
 		unique_ptr<Exporter> exporter = createExporter(
@@ -262,7 +261,7 @@ int main(int platformArgc, char* platformArgv[]) {
 			JoiningContinuousTimeline<Shape> animation = animateWaveFile(
 				inputFilePath,
 				dialogFile.isSet()
-					? readUtf8File(path(dialogFile.getValue()))
+					? readUtf8File(u8path(dialogFile.getValue()))
 					: boost::optional<string>(),
 				*createRecognizer(recognizerType.getValue()),
 				targetShapeSet,
@@ -271,9 +270,9 @@ int main(int platformArgc, char* platformArgv[]) {
 			logging::info("Done animating.");
 
 			// Export animation
-			optional<boost::filesystem::ofstream> outputFile;
+			optional<std::ofstream> outputFile;
 			if (outputFileName.isSet()) {
-				outputFile = boost::in_place(outputFileName.getValue());
+				outputFile = boost::in_place(u8path(outputFileName.getValue()));
 				outputFile->exceptions(std::ifstream::failbit | std::ifstream::badbit);
 			}
 			ExporterInput exporterInput = ExporterInput(inputFilePath, animation, targetShapeSet);
@@ -284,7 +283,7 @@ int main(int platformArgc, char* platformArgv[]) {
 			logging::log(SuccessEntry());
 		} catch (...) {
 			std::throw_with_nested(
-				std::runtime_error(fmt::format("Error processing file {}.", inputFilePath))
+				std::runtime_error(fmt::format("Error processing file {}.", inputFilePath.u8string()))
 			);
 		}
 
diff --git a/rhubarb/src/rhubarb/semanticEntries.cpp b/rhubarb/src/rhubarb/semanticEntries.cpp
index 7ee8b02..f191a04 100644
--- a/rhubarb/src/rhubarb/semanticEntries.cpp
+++ b/rhubarb/src/rhubarb/semanticEntries.cpp
@@ -7,12 +7,12 @@ SemanticEntry::SemanticEntry(Level level, const string& message) :
 	Entry(level, message)
 {}
 
-StartEntry::StartEntry(const boost::filesystem::path& inputFilePath) :
-	SemanticEntry(Level::Info, fmt::format("Application startup. Input file: {}.", inputFilePath)),
+StartEntry::StartEntry(const std::filesystem::path& inputFilePath) :
+	SemanticEntry(Level::Info, fmt::format("Application startup. Input file: {}.", inputFilePath.u8string())),
 	inputFilePath(inputFilePath)
 {}
 
-boost::filesystem::path StartEntry::getInputFilePath() const {
+std::filesystem::path StartEntry::getInputFilePath() const {
 	return inputFilePath;
 }
 
diff --git a/rhubarb/src/rhubarb/semanticEntries.h b/rhubarb/src/rhubarb/semanticEntries.h
index 344fb67..c7ee717 100644
--- a/rhubarb/src/rhubarb/semanticEntries.h
+++ b/rhubarb/src/rhubarb/semanticEntries.h
@@ -1,6 +1,6 @@
 #pragma once
 #include "logging/Entry.h"
-#include <boost/filesystem/path.hpp>
+#include <filesystem>
 
 // Marker class for semantic entries
 class SemanticEntry : public logging::Entry {
@@ -10,10 +10,10 @@ public:
 
 class StartEntry : public SemanticEntry {
 public:
-	StartEntry(const boost::filesystem::path& inputFilePath);
-	boost::filesystem::path getInputFilePath() const;
+	StartEntry(const std::filesystem::path& inputFilePath);
+	std::filesystem::path getInputFilePath() const;
 private:
-	boost::filesystem::path inputFilePath;
+	std::filesystem::path inputFilePath;
 };
 
 class ProgressEntry : public SemanticEntry {
diff --git a/rhubarb/src/rhubarb/sinks.cpp b/rhubarb/src/rhubarb/sinks.cpp
index 487377e..1c8b5e4 100644
--- a/rhubarb/src/rhubarb/sinks.cpp
+++ b/rhubarb/src/rhubarb/sinks.cpp
@@ -24,7 +24,7 @@ void NiceStderrSink::receive(const logging::Entry& entry) {
 	// the technical log message.
 	if (const auto* startEntry = dynamic_cast<const StartEntry*>(&entry)) {
 		std::cerr
-			<< fmt::format("Generating lip sync data for {}.", startEntry->getInputFilePath())
+			<< fmt::format("Generating lip sync data for {}.", startEntry->getInputFilePath().u8string())
 			<< std::endl;
 		startProgressIndication();
 	} else if (const auto* progressEntry = dynamic_cast<const ProgressEntry*>(&entry)) {
@@ -75,7 +75,7 @@ void QuietStderrSink::receive(const logging::Entry& entry) {
 		if (quietSoFar) {
 			// This is the first message we print. Give a bit of context.
 			const string intro = inputFilePath
-				? fmt::format("{} {} processing file {}:", appName, appVersion, *inputFilePath)
+				? fmt::format("{} {} processing file {}:", appName, appVersion, inputFilePath->u8string())
 				: fmt::format("{} {}:", appName, appVersion);
 			std::cerr << intro << std::endl;
 			quietSoFar = false;
@@ -100,7 +100,7 @@ void MachineReadableStderrSink::receive(const logging::Entry& entry) {
 	optional<string> line;
 	if (dynamic_cast<const SemanticEntry*>(&entry)) {
 		if (const auto* startEntry = dynamic_cast<const StartEntry*>(&entry)) {
-			const string file = escapeJsonString(startEntry->getInputFilePath().string());
+			const string file = escapeJsonString(startEntry->getInputFilePath().u8string());
 			line = fmt::format(
 				R"({{ "type": "start", "file": "{}", {} }})",
 				file,
diff --git a/rhubarb/src/rhubarb/sinks.h b/rhubarb/src/rhubarb/sinks.h
index 9bf47e3..5de4e25 100644
--- a/rhubarb/src/rhubarb/sinks.h
+++ b/rhubarb/src/rhubarb/sinks.h
@@ -3,7 +3,7 @@
 #include "logging/Entry.h"
 #include "logging/Sink.h"
 #include "tools/ProgressBar.h"
-#include <boost/filesystem/path.hpp>
+#include <filesystem>
 
 // Prints nicely formatted progress to stderr.
 // Non-semantic entries are only printed if their log level at least matches the specified minimum level.
@@ -31,7 +31,7 @@ public:
 private:
 	logging::Level minLevel;
 	bool quietSoFar = true;
-	boost::optional<boost::filesystem::path> inputFilePath;
+	boost::optional<std::filesystem::path> inputFilePath;
 	std::shared_ptr<Sink> innerSink;
 };
 
diff --git a/rhubarb/src/tools/NiceCmdLineOutput.cpp b/rhubarb/src/tools/NiceCmdLineOutput.cpp
index cb1a700..ddf165f 100644
--- a/rhubarb/src/tools/NiceCmdLineOutput.cpp
+++ b/rhubarb/src/tools/NiceCmdLineOutput.cpp
@@ -10,7 +10,7 @@ using std::cout;
 using std::endl;
 
 string getBinaryName() {
-	return getBinPath().filename().string();
+	return getBinPath().filename().u8string();
 }
 
 void NiceCmdLineOutput::version(CmdLineInterface& cli) {
diff --git a/rhubarb/src/tools/fileTools.cpp b/rhubarb/src/tools/fileTools.cpp
index f08eb0d..c60eb85 100644
--- a/rhubarb/src/tools/fileTools.cpp
+++ b/rhubarb/src/tools/fileTools.cpp
@@ -2,7 +2,7 @@
 
 #include <cerrno>
 
-using boost::filesystem::path;
+using std::filesystem::path;
 
 std::ifstream openFile(path filePath) {
 	try {
diff --git a/rhubarb/src/tools/fileTools.h b/rhubarb/src/tools/fileTools.h
index 8e6053f..d709c6a 100644
--- a/rhubarb/src/tools/fileTools.h
+++ b/rhubarb/src/tools/fileTools.h
@@ -1,7 +1,8 @@
 #pragma once
 #include "platformTools.h"
 #include <fstream>
+#include <filesystem>
 
-std::ifstream openFile(boost::filesystem::path filePath);
+std::ifstream openFile(std::filesystem::path filePath);
 
-void throwIfNotReadable(boost::filesystem::path filePath);
\ No newline at end of file
+void throwIfNotReadable(std::filesystem::path filePath);
\ No newline at end of file
diff --git a/rhubarb/src/tools/platformTools.cpp b/rhubarb/src/tools/platformTools.cpp
index 2e51ea9..c375914 100644
--- a/rhubarb/src/tools/platformTools.cpp
+++ b/rhubarb/src/tools/platformTools.cpp
@@ -1,5 +1,4 @@
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
+#include <filesystem>
 #include <format.h>
 #include <boost/uuid/uuid.hpp>
 #include <boost/uuid/uuid_generators.hpp>
@@ -9,14 +8,14 @@
 #include <utf8.h>
 #include <gsl_util.h>
 #include "tools.h"
-#include <boost/filesystem/detail/utf8_codecvt_facet.hpp> 
+#include <codecvt>
 #include <iostream>
 
 #ifdef _WIN32
 	#include <Windows.h>
 #endif
 
-using boost::filesystem::path;
+using std::filesystem::path;
 using std::string;
 using std::vector;
 
@@ -39,9 +38,9 @@ path getBinPath() {
 			}
 			buffer[pathLength] = 0;
 
-			// Convert to boost::filesystem::path
+			// Convert to std::filesystem::path
 			const string pathString(buffer.data());
-			path result(boost::filesystem::canonical(pathString).make_preferred());
+			path result(std::filesystem::canonical(pathString).make_preferred());
 			return result;
 		} catch (...) {
 			std::throw_with_nested(std::runtime_error("Could not determine path of bin directory."));
@@ -55,7 +54,7 @@ path getBinDirectory() {
 }
 
 path getTempFilePath() {
-	const path tempDirectory = boost::filesystem::temp_directory_path();
+	const path tempDirectory = std::filesystem::temp_directory_path();
 	static boost::uuids::random_generator generateUuid;
 	const string fileName = to_string(generateUuid());
 	return tempDirectory / fileName;
@@ -145,9 +144,3 @@ void useUtf8ForConsole() {
 	std::cerr.rdbuf(new ConsoleBuffer(stderr));
 #endif
 }
-
-void useUtf8ForBoostFilesystem() {
-	const std::locale globalLocale = std::locale();
-	const std::locale utf8Locale(globalLocale, new boost::filesystem::detail::utf8_codecvt_facet);
-	path::imbue(utf8Locale);
-}
diff --git a/rhubarb/src/tools/platformTools.h b/rhubarb/src/tools/platformTools.h
index 34a0e35..e93b056 100644
--- a/rhubarb/src/tools/platformTools.h
+++ b/rhubarb/src/tools/platformTools.h
@@ -1,12 +1,13 @@
 #pragma once
 
-#include <boost/filesystem.hpp>
+#include <filesystem>
 #include <ctime>
 #include <string>
+#include <vector>
 
-boost::filesystem::path getBinPath();
-boost::filesystem::path getBinDirectory();
-boost::filesystem::path getTempFilePath();
+std::filesystem::path getBinPath();
+std::filesystem::path getBinDirectory();
+std::filesystem::path getTempFilePath();
 
 std::tm getLocalTime(const time_t& time);
 std::string errorNumberToString(int errorNumber);
@@ -14,4 +15,3 @@ std::string errorNumberToString(int errorNumber);
 std::vector<std::string> argsToUtf8(int argc, char* argv[]);
 
 void useUtf8ForConsole();
-void useUtf8ForBoostFilesystem();
\ No newline at end of file
diff --git a/rhubarb/src/tools/textFiles.cpp b/rhubarb/src/tools/textFiles.cpp
index d266f65..f7086db 100644
--- a/rhubarb/src/tools/textFiles.cpp
+++ b/rhubarb/src/tools/textFiles.cpp
@@ -1,18 +1,17 @@
 #include "textFiles.h"
-#include <boost/filesystem/operations.hpp>
 #include <format.h>
-#include <boost/filesystem/fstream.hpp>
+#include <fstream>
 #include "stringTools.h"
 
 using std::string;
-using boost::filesystem::path;
+using std::filesystem::path;
 
 string readUtf8File(path filePath) {
 	if (!exists(filePath)) {
-		throw std::invalid_argument(fmt::format("File {} does not exist.", filePath));
+		throw std::invalid_argument(fmt::format("File {} does not exist.", filePath.u8string()));
 	}
 	try {
-		boost::filesystem::ifstream file;
+		std::ifstream file;
 		file.exceptions(std::ifstream::failbit | std::ifstream::badbit);
 		file.open(filePath);
 		string text((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
@@ -22,7 +21,7 @@ string readUtf8File(path filePath) {
 
 		return text;
 	} catch (...) {
-		std::throw_with_nested(std::runtime_error(fmt::format("Error reading file {0}.", filePath)));
+		std::throw_with_nested(std::runtime_error(fmt::format("Error reading file {0}.", filePath.u8string())));
 	}
 }
 
diff --git a/rhubarb/src/tools/textFiles.h b/rhubarb/src/tools/textFiles.h
index adfe96b..4f1d5cd 100644
--- a/rhubarb/src/tools/textFiles.h
+++ b/rhubarb/src/tools/textFiles.h
@@ -1,5 +1,5 @@
 #pragma once
 
-#include <boost/filesystem/path.hpp>
+#include <filesystem>
 
-std::string readUtf8File(boost::filesystem::path filePath);
\ No newline at end of file
+std::string readUtf8File(std::filesystem::path filePath);
\ No newline at end of file