Removed some dependencies and use abseil's flags

.gitmodules

@@ -1,24 +1,15 @@
 [submodule "external/abseil-cpp"]
 	path = external/abseil-cpp
 	url = https://github.com/abseil/abseil-cpp
-[submodule "external/spdlog"]
-	path = external/spdlog
-	url = https://github.com/gabime/spdlog
 [submodule "external/Catch2"]
 	path = external/Catch2
 	url = https://github.com/catchorg/Catch2
-[submodule "external/cxxopts"]
-	path = external/cxxopts
-	url = https://github.com/jarro2783/cxxopts
 [submodule "external/benchmark"]
 	path = external/benchmark
 	url = https://github.com/google/benchmark
 [submodule "external/readerwriterqueue"]
 	path = external/readerwriterqueue
 	url = https://github.com/cameron314/readerwriterqueue.git
-[submodule "external/gsl-lite"]
-	path = external/gsl-lite
-	url = https://github.com/martinmoene/gsl-lite.git
 [submodule "external/cnpy"]
 	path = external/cnpy
 	url = https://github.com/rogersce/cnpy.git

CMakeLists.txt

@@ -42,10 +42,7 @@ set(BUILD_TESTING OFF CACHE BOOL "Disable Abseil's tests")
 set(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "Disable Google Benchmark tests")
 set(BENCHMARK_ENABLE_INSTALL OFF CACHE BOOL "Disable Google Benchmark install")
 add_subdirectory(external/abseil-cpp)
-add_subdirectory(external/spdlog)
 add_subdirectory(external/Catch2)
-add_subdirectory(external/cxxopts)
-add_subdirectory(external/gsl-lite)
 add_subdirectory(external/benchmark)
 add_subdirectory(external/cnpy)
 
@@ -121,7 +118,7 @@ add_executable(sfzprint sources/ParserMain.cpp sources/Opcode.cpp sources/Parser
 if(UNIX)
     target_link_libraries(sfzprint stdc++fs)
 endif(UNIX)
-target_link_libraries(sfzprint absl::strings cxxopts)
+target_link_libraries(sfzprint absl::strings absl::flags_parse)
 
 
 ###############################
@@ -132,7 +129,7 @@ if(UNIX)
     target_compile_options(sfizz PRIVATE -fno-rtti)
     target_link_libraries(sfizz stdc++fs)
 endif(UNIX)
-target_link_libraries(sfizz absl::strings cxxopts sndfile absl::flat_hash_map readerwriterqueue)
+target_link_libraries(sfizz absl::strings sndfile absl::flat_hash_map readerwriterqueue absl::flags_parse)
 
 ###############################
 # Test application

external/cxxopts

@@ -1 +0,0 @@
-Subproject commit cb60381e84df99a4829e3d3c657c06380f916d0f

external/gsl-lite

@@ -1 +0,0 @@
-Subproject commit 89987ffc3b6940ad7b7b9c61c5d5beea0bf2f2c0

external/spdlog

@@ -1 +0,0 @@
-Subproject commit 139c0d135f303946bd542a9bc2d6b18d6a7415bb

sources/Main.cpp

@@ -1,20 +1,17 @@
 #include "Synth.h"
 #include <iostream>
-#include "cxxopts.hpp"
+#include <absl/flags/parse.h>
+#include <absl/types/span.h>
 
 int main(int argc, char** argv)
 {
     std::ios::sync_with_stdio(false);
-    std::vector<std::string> filesToParse;
+    auto arguments = absl::ParseCommandLine(argc, argv);
-    cxxopts::Options options("sfzparser", "Parses an sfz file and prints the output");
+    auto filesToParse = absl::MakeConstSpan(arguments).subspan(1);
-    options.add_options()("positional", "SFZ files to parse", cxxopts::value<std::vector<std::string>>(filesToParse));
+    std::cout << "Positional arguments:";
-    options.parse_positional({"positional"});
+    for (auto& file: filesToParse)
-    auto result = options.parse(argc, argv);
+        std::cout << " " << file << ',';
-    if (filesToParse.size() == 0)
+    std::cout << '\n';
-    {
-        std::cout << options.help() << '\n';
-        return -1;
-    }
 
     sfz::Synth synth;
     std::filesystem::path filename { filesToParse[0] };

sources/ParserMain.cpp

@@ -1,10 +1,9 @@
 #include "Parser.h"
-#include "cxxopts.hpp"
-// #include "spdlog/spdlog.h"
 #include <iostream>
 #include <filesystem>
 #include <string_view>
-
+#include <absl/flags/parse.h>
+#include <absl/types/span.h>
 
 class PrintingParser: public sfz::Parser
 {
@@ -44,17 +43,13 @@ private:
 int main(int argc, char** argv)
 {
     std::ios::sync_with_stdio(false);
-    std::vector<std::string> filesToParse;
+    auto arguments = absl::ParseCommandLine(argc, argv);
-    cxxopts::Options options("sfzparser", "Parses an sfz file and prints the output");
+    auto filesToParse = absl::MakeConstSpan(arguments).subspan(1);
-    options.add_options()("positional", "SFZ files to parse", cxxopts::value<std::vector<std::string>>(filesToParse));
+    std::cout << "Positional arguments:";
-    options.parse_positional({"positional"});
+    for (auto& file: filesToParse)
-    auto result = options.parse(argc, argv);
+        std::cout << " " << file << ',';
-    if (filesToParse.size() == 0)
+    std::cout << '\n';
-    {
+    
-        std::cout << options.help() << '\n';
-        return -1;
-    }
-
     PrintingParser parser;
     std::filesystem::path filename { filesToParse[0] };
     parser.loadSfzFile(filename);