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/*
* Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "CharacterMapFile.h"
#include <AK/ByteBuffer.h>
#include <AK/Utf8View.h>
#include <LibCore/File.h>
namespace Keyboard {
Optional<CharacterMapData> CharacterMapFile::load_from_file(const String& filename)
{
auto path = filename;
if (!path.ends_with(".json")) {
StringBuilder full_path;
full_path.append("/res/keymaps/");
full_path.append(filename);
full_path.append(".json");
path = full_path.to_string();
}
auto file = Core::File::construct(path);
file->open(Core::OpenMode::ReadOnly);
if (!file->is_open()) {
dbgln("Failed to open {}: {}", path, file->error_string());
return {};
}
auto file_contents = file->read_all();
auto json_result = JsonValue::from_string(file_contents);
if (!json_result.has_value()) {
dbgln("Failed to load character map from file {}", path);
return {};
}
auto json = json_result.value().as_object();
Vector<u32> map = read_map(json, "map");
Vector<u32> shift_map = read_map(json, "shift_map");
Vector<u32> alt_map = read_map(json, "alt_map");
Vector<u32> altgr_map = read_map(json, "altgr_map");
Vector<u32> shift_altgr_map = read_map(json, "shift_altgr_map");
CharacterMapData character_map;
for (int i = 0; i < CHAR_MAP_SIZE; i++) {
character_map.map[i] = map.at(i);
character_map.shift_map[i] = shift_map.at(i);
character_map.alt_map[i] = alt_map.at(i);
if (altgr_map.is_empty()) {
// AltGr map was not found, using Alt map as fallback.
character_map.altgr_map[i] = alt_map.at(i);
} else {
character_map.altgr_map[i] = altgr_map.at(i);
}
if (shift_altgr_map.is_empty()) {
// Shift+AltGr map was not found, using Alt map as fallback.
character_map.shift_altgr_map[i] = alt_map.at(i);
} else {
character_map.shift_altgr_map[i] = shift_altgr_map.at(i);
}
}
return character_map;
}
Vector<u32> CharacterMapFile::read_map(const JsonObject& json, const String& name)
{
if (!json.has(name))
return {};
Vector<u32> buffer;
buffer.resize(CHAR_MAP_SIZE);
auto map_arr = json.get(name).as_array();
for (size_t i = 0; i < map_arr.size(); i++) {
auto key_value = map_arr.at(i).as_string();
if (key_value.length() == 0) {
buffer[i] = 0;
} else if (key_value.length() == 1) {
buffer[i] = key_value.characters()[0];
} else {
Utf8View m_utf8_view(key_value.characters());
buffer[i] = *m_utf8_view.begin();
}
}
return buffer;
}
}
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