Files and structure for python interface

include/aare/NumpyHelpers.hpp

@@ -0,0 +1,55 @@
+
+#pragma once
+#include <algorithm>
+#include <array>
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+#include <numeric>
+#include <sstream>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "aare/Dtype.hpp"
+#include "aare/defs.hpp"
+
+namespace aare {
+
+struct NumpyHeader {
+    Dtype dtype{aare::Dtype::ERROR};
+    bool fortran_order{false};
+    std::vector<size_t> shape{};
+    std::string to_string() const;
+};
+
+namespace NumpyHelpers {
+
+const constexpr std::array<char, 6> magic_str{'\x93', 'N', 'U', 'M', 'P', 'Y'};
+const uint8_t magic_string_length{6};
+
+std::string parse_str(const std::string &in);
+/**
+  Removes leading and trailing whitespaces
+  */
+std::string trim(const std::string &str);
+
+std::vector<std::string> parse_tuple(std::string in);
+
+bool parse_bool(const std::string &in);
+
+std::string get_value_from_map(const std::string &mapstr);
+
+std::unordered_map<std::string, std::string> parse_dict(std::string in, const std::vector<std::string> &keys);
+
+template <typename T, size_t N> bool in_array(T val, const std::array<T, N> &arr) {
+    return std::find(std::begin(arr), std::end(arr), val) != std::end(arr);
+}
+bool is_digits(const std::string &str);
+
+aare::Dtype parse_descr(std::string typestring);
+size_t write_header(const std::filesystem::path &fname, const NumpyHeader &header);
+size_t write_header(std::ostream &out, const NumpyHeader &header);
+
+} // namespace NumpyHelpers
+} // namespace aare