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franzpoeschelfranzpoeschel
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Extract implementation of convert-toml-json to header
1 parent 6e75956 commit c371105

2 files changed

Lines changed: 128 additions & 60 deletions

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‎include/openPMD/cli/convert-toml-json.hpp‎

Lines changed: 119 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,119 @@
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#pragma once
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#include <cstdlib>
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#include <cstring>
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#include <openPMD/auxiliary/JSON_internal.hpp>
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#include <iostream>
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#include <sstream>
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#include <string>
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namespace from_format_to_format
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{
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namespace json = openPMD::json;
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struct ID
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{
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template <json::SupportedLanguages originallySpecifiedAs>
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static auto call(nlohmann::json const &&val)
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// template <>
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// auto call<json::SupportedLanguages::JSON>(nlohmann::json const &val) ->
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// nlohmann::json const&
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{
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if constexpr (originallySpecifiedAs == json::SupportedLanguages::JSON)
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{
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return val;
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}
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else
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{
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return json::jsonToToml(val);
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}
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}
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};
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struct switch_
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{
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template <json::SupportedLanguages>
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struct other_type;
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template <json::SupportedLanguages originallySpecifiedAs>
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static auto call(nlohmann::json const &&val)
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{
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return ID::call<other_type<originallySpecifiedAs>::value>(
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std::move(val));
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}
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};
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template <>
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struct switch_::other_type<json::SupportedLanguages::JSON>
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{
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static constexpr json::SupportedLanguages value =
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json::SupportedLanguages::TOML;
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};
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template <>
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struct switch_::other_type<json::SupportedLanguages::TOML>
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{
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static constexpr json::SupportedLanguages value =
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json::SupportedLanguages::JSON;
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};
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} // namespace from_format_to_format
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template <typename FromFormatToFormat>
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class convert_json_toml
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{
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static void with_parsed_cmdline_args(std::string jsonOrToml)
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{
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namespace json = openPMD::json;
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auto [config, originallySpecifiedAs] = json::parseOptions(
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jsonOrToml,
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/* considerFiles = */ true,
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/* convertLowercase = */ false);
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{
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// NOLINTNEXTLINE(bugprone-unused-local-non-trivial-variable)
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[[maybe_unused]] auto _ = std::move(jsonOrToml);
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}
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switch (originallySpecifiedAs)
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{
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using SL = json::SupportedLanguages;
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case SL::JSON: {
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auto asToml = json::jsonToToml(config);
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std::cout << json::format_toml(asToml);
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}
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break;
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case SL::TOML:
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std::cout << config << '\n';
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break;
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}
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}
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public:
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static void run_application(
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int argc, char const **argv, void (*print_help_message)(char const *))
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{
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std::string jsonOrToml;
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switch (argc)
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{
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case 0:
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case 1:
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// Just read the whole stream into memory
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// Not very elegant, but we'll hold the entire JSON/TOML dataset
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// in memory at some point anyway, so it doesn't really matter
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{
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std::stringbuf readEverything;
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std::cin >> &readEverything;
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jsonOrToml = readEverything.str();
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}
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break;
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case 2:
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if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0)
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{
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print_help_message(argv[1]);
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exit(0);
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}
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jsonOrToml = argv[1];
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break;
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default:
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throw std::runtime_error(
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std::string("Usage: ") + argv[0] +
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" [file location or inline JSON/TOML]");
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}
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with_parsed_cmdline_args(std::move(jsonOrToml));
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}
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};

‎src/cli/convert-toml-json.cpp‎

Lines changed: 9 additions & 60 deletions
Original file line numberDiff line numberDiff line change
@@ -1,55 +1,8 @@
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#include <cstdlib>
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#include <cstring>
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#include <openPMD/auxiliary/JSON_internal.hpp>
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#include "openPMD/cli/convert-toml-json.hpp"
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#include <iostream>
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#include <sstream>
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#include <string>
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namespace json = openPMD::json;
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void parsed_main(std::string jsonOrToml)
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{
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auto [config, originallySpecifiedAs] = json::parseOptions(
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jsonOrToml, /* considerFiles = */ true, /* convertLowercase = */ false);
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{
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// NOLINTNEXTLINE(bugprone-unused-local-non-trivial-variable)
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[[maybe_unused]] auto _ = std::move(jsonOrToml);
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}
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switch (originallySpecifiedAs)
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{
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using SL = json::SupportedLanguages;
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case SL::JSON: {
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auto asToml = json::jsonToToml(config);
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std::cout << json::format_toml(asToml);
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}
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break;
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case SL::TOML:
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std::cout << config << '\n';
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break;
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}
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}
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int main(int argc, char const **argv)
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void print_help_message(char const *program_name)
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{
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std::string jsonOrToml;
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switch (argc)
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{
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case 0:
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case 1:
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// Just read the whole stream into memory
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// Not very elegant, but we'll hold the entire JSON/TOML dataset
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// in memory at some point anyway, so it doesn't really matter
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{
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std::stringbuf readEverything;
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std::cin >> &readEverything;
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jsonOrToml = readEverything.str();
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}
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break;
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case 2:
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if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0)
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{
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std::cout << "Usage: " << std::string(argv[0]) << R"( [json_or_toml]
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std::cout << "Usage: " << std::string(program_name) << R"( [json_or_toml]
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'json_or_toml' can be a JSON or TOML dataset specified inline or a reference
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to a file prepended by an '@'.
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Inline datasets will be interpreted as JSON if they start with an '{', as TOML
@@ -60,14 +13,10 @@ Inline dataset specifications can be replaced by input read from stdin.
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If the input is JSON, then it will be converted to TOML and written to stdout,
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equivalently from TOML to JSON.
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)";
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exit(0);
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}
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jsonOrToml = argv[1];
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break;
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default:
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throw std::runtime_error(
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std::string("Usage: ") + argv[0] +
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" [file location or inline JSON/TOML]");
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}
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parsed_main(std::move(jsonOrToml));
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}
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int main(int argc, char const **argv)
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{
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convert_json_toml<from_format_to_format::ID>::run_application(
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argc, argv, print_help_message);
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}

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