1 files changed, 93 insertions, 0 deletions
diff --git a/lib/c++/util.hpp b/lib/c++/util.hpp
new file mode 100644
index 0000000..0bdebd1
--- /dev/null
+++ b/lib/c++/util.hpp
@@ -0,0 +1,93 @@
+#pragma once
+
+#include <forstio/string_literal.hpp>
+#include <forstio/codec/data.hpp>
+
+#include <iostream>
+#include <iomanip>
+#include <sys/ioctl.h>
+
+namespace kel {
+namespace lbm {
+/*
+template<typename T, typename Descriptor, typename CellFieldSchema>
+struct is_neighbour {
+	static bool operator()(saw::data<CellFieldSchema>& latt,  saw::data<sch::FixedArray<sch::UInt64, Descriptor::D>& index) {
+		using dfi = df_info<T,Descriptor>;
+
+		if(index.at({0u}).get() == 0u or index.at({1u}).get() == 0u){
+			return false;
+		}
+
+		for(saw::data<sch::UInt64> k{0u}; k.get() < Descriptor::Q; ++k){
+			// TODO
+			saw::data<sch::FixedArray<sch::UInt64,2u>>
+		}
+
+		auto& cell = latt(index);
+	}
+};
+*/
+
+/* Might be stupidly complex
+class cell_info_registry final {
+public:
+	static uint8_t next_reg_id = 0u;
+
+	template<string_literal T>
+	static uint8_t get_registration_id() {
+		static uint8_t reg_id = std::numeric_limit<uint8_t>::max();
+
+		if(reg_id == std::numeric_limit<uint8_t>::max()){
+			reg_id = next_reg_id;
+			++next_reg_id;
+		}
+
+		return reg_id;
+	}
+};
+*/
+
+void print_progress_bar(const uint32_t progress, const uint32_t progress_target){
+	std::cout<<"\r";
+	//	<<"Progress: "
+	//	<<((100 * progress) / progress_target)
+	//	<<"% [";
+
+	const uint32_t progress_min = std::min(progress,progress_target);
+	constexpr uint64_t max_perc_progress = 100u;
+	uint64_t perc_prog = (max_perc_progress*progress_min) / progress_target;
+
+	std::string_view prog_str{"Progress: "};
+	// Progress string + (100 width and perc char) + ([] brackets) + space + pointer
+	uint64_t i{prog_str.size() + 4u + 2u + 1u + 1u};
+
+	std::cout<<prog_str;
+	std::cout<<std::setw(3u)<<perc_prog<<"%";
+	std::cout<<" ";
+	std::cout<<"[";
+
+	uint64_t max_display = []() -> uint64_t{
+		struct winsize w;
+		if(ioctl(STDOUT_FILENO, TIOCGWINSZ,&w) == -1){
+			// Standardized Terminal size
+			return 80u;
+		}
+		return w.ws_col;
+	}();
+	max_display = std::max(max_display,i) - i;
+	uint64_t progress_display = (max_display * progress_min) / progress_target;
+
+	for(i = 0u; i < progress_display; ++i){
+		std::cout<<"#";
+	}
+	for(; i < max_display; ++i){
+		std::cout<<"-";
+	}
+
+	std::cout<<"]";
+
+	std::cout<<std::flush;
+}
+}
+}