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#include "ui/preferences.h"
#include "core/log.h"
#include <charconv>
#include <cstdio>
#include <fstream>
#include <string>
#include <string_view>
namespace Hsdbg
{
namespace
{
auto as_float(std::string_view text, float fallback) -> float
{
float value = fallback;
std::from_chars(text.data(), text.data() + text.size(), value);
return value;
}
auto as_bool(std::string_view text, bool fallback) -> bool
{
if (text == "true" || text == "1")
return true;
if (text == "false" || text == "0")
return false;
return fallback;
}
auto read_color(std::string_view value, float (&out)[3]) -> void
{
std::sscanf(std::string(value).c_str(), "%f %f %f", &out[0], &out[1], &out[2]);
}
}
auto load_preferences(const std::filesystem::path& path) -> Preferences
{
Preferences preferences;
std::ifstream file(path);
if (!file.is_open())
return preferences;
std::string line;
while (std::getline(file, line))
{
const size_t equals = line.find('=');
if (equals == std::string::npos)
continue;
const std::string_view key(line.data(), equals);
const std::string_view value(line.data() + equals + 1, line.size() - equals - 1);
if (key == "theme")
preferences.theme = std::string(value);
else if (key == "ui_scale")
preferences.ui_scale = as_float(value, preferences.ui_scale);
else if (key == "accent")
std::sscanf(std::string(value).c_str(), "%f %f %f",
&preferences.accent[0], &preferences.accent[1], &preferences.accent[2]);
else if (key == "rounding")
preferences.rounding = as_float(value, preferences.rounding);
else if (key == "show_mascot")
preferences.show_mascot = as_bool(value, preferences.show_mascot);
else if (key == "mascot_scale")
preferences.mascot_scale = as_float(value, preferences.mascot_scale);
else if (key == "syntax_highlighting")
preferences.syntax_highlighting = as_bool(value, preferences.syntax_highlighting);
else if (key == "show_line_numbers")
preferences.show_line_numbers = as_bool(value, preferences.show_line_numbers);
else if (key == "highlight_current_line")
preferences.highlight_current_line = as_bool(value, preferences.highlight_current_line);
else if (key == "color_keyword")
read_color(value, preferences.color_keyword);
else if (key == "color_type")
read_color(value, preferences.color_type);
else if (key == "color_string")
read_color(value, preferences.color_string);
else if (key == "color_number")
read_color(value, preferences.color_number);
else if (key == "color_comment")
read_color(value, preferences.color_comment);
else if (key == "color_preprocessor")
read_color(value, preferences.color_preprocessor);
else if (key == "color_current_line")
read_color(value, preferences.color_current_line);
else if (key == "stop_at_entry")
preferences.stop_at_entry = as_bool(value, preferences.stop_at_entry);
else if (key == "step_by_instruction")
preferences.step_by_instruction = as_bool(value, preferences.step_by_instruction);
else if (key == "show_fps")
preferences.show_fps = as_bool(value, preferences.show_fps);
}
return preferences;
}
auto save_preferences(const std::filesystem::path& path, const Preferences& preferences) -> void
{
std::ofstream file(path, std::ios::trunc);
if (!file.is_open())
{
Log::warn("preferences: could not write '{}'", path.string());
return;
}
const auto color = [](const float (&c)[3]) {
return std::to_string(c[0]) + ' ' + std::to_string(c[1]) + ' ' + std::to_string(c[2]);
};
file << "theme=" << preferences.theme << '\n'
<< "ui_scale=" << preferences.ui_scale << '\n'
<< "accent=" << color(preferences.accent) << '\n'
<< "rounding=" << preferences.rounding << '\n'
<< "show_mascot=" << (preferences.show_mascot ? "true" : "false") << '\n'
<< "mascot_scale=" << preferences.mascot_scale << '\n'
<< "syntax_highlighting=" << (preferences.syntax_highlighting ? "true" : "false") << '\n'
<< "show_line_numbers=" << (preferences.show_line_numbers ? "true" : "false") << '\n'
<< "highlight_current_line=" << (preferences.highlight_current_line ? "true" : "false") << '\n'
<< "color_keyword=" << color(preferences.color_keyword) << '\n'
<< "color_type=" << color(preferences.color_type) << '\n'
<< "color_string=" << color(preferences.color_string) << '\n'
<< "color_number=" << color(preferences.color_number) << '\n'
<< "color_comment=" << color(preferences.color_comment) << '\n'
<< "color_preprocessor=" << color(preferences.color_preprocessor) << '\n'
<< "color_current_line=" << color(preferences.color_current_line) << '\n'
<< "stop_at_entry=" << (preferences.stop_at_entry ? "true" : "false") << '\n'
<< "step_by_instruction=" << (preferences.step_by_instruction ? "true" : "false") << '\n'
<< "show_fps=" << (preferences.show_fps ? "true" : "false") << '\n';
}
}
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