// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
package org.yuzu.yuzu_emu.features.settings.utils
import org.ini4j.Wini
import org.yuzu.yuzu_emu.NativeLibrary
import org.yuzu.yuzu_emu.R
import org.yuzu.yuzu_emu.YuzuApplication
import org.yuzu.yuzu_emu.features.settings.model.*
import org.yuzu.yuzu_emu.features.settings.model.Settings.SettingsSectionMap
import org.yuzu.yuzu_emu.features.settings.ui.SettingsActivityView
import org.yuzu.yuzu_emu.utils.BiMap
import org.yuzu.yuzu_emu.utils.DirectoryInitialization
import org.yuzu.yuzu_emu.utils.Log
import java.io.*
import java.util.*
/**
* Contains static methods for interacting with .ini files in which settings are stored.
*/
object SettingsFile {
const val FILE_NAME_CONFIG = "config"
private val sectionsMap = BiMap<String?, String?>()
/**
* Reads a given .ini file from disk and returns it as a HashMap of Settings, themselves
* effectively a HashMap of key/value settings. If unsuccessful, outputs an error telling why it
* failed.
*
* @param ini The ini file to load the settings from
* @param isCustomGame
* @param view The current view.
* @return An Observable that emits a HashMap of the file's contents, then completes.
*/
private fun readFile(
ini: File?,
isCustomGame: Boolean,
view: SettingsActivityView?
): HashMap<String, SettingSection?> {
val sections: HashMap<String, SettingSection?> = SettingsSectionMap()
var reader: BufferedReader? = null
try {
reader = BufferedReader(FileReader(ini))
var current: SettingSection? = null
var line: String?
while (reader.readLine().also { line = it } != null) {
if (line!!.startsWith("[") && line!!.endsWith("]")) {
current = sectionFromLine(line!!, isCustomGame)
sections[current.name] = current
} else if (current != null) {
val setting = settingFromLine(line!!)
if (setting != null) {
current.putSetting(setting)
}
}
}
} catch (e: FileNotFoundException) {
Log.error("[SettingsFile] File not found: " + e.message)
view?.onSettingsFileNotFound()
} catch (e: IOException) {
Log.error("[SettingsFile] Error reading from: " + e.message)
view?.onSettingsFileNotFound()
} finally {
if (reader != null) {
try {
reader.close()
} catch (e: IOException) {
Log.error("[SettingsFile] Error closing: " + e.message)
}
}
}
return sections
}
fun readFile(fileName: String, view: SettingsActivityView): HashMap<String, SettingSection?> {
return readFile(getSettingsFile(fileName), false, view)
}
/**
* Reads a given .ini file from disk and returns it as a HashMap of SettingSections, themselves
* effectively a HashMap of key/value settings. If unsuccessful, outputs an error telling why it
* failed.
*
* @param gameId the id of the game to load it's settings.
* @param view The current view.
*/
fun readCustomGameSettings(
gameId: String,
view: SettingsActivityView
): HashMap<String, SettingSection?> {
return readFile(getCustomGameSettingsFile(gameId), true, view)
}
/**
* Saves a Settings HashMap to a given .ini file on disk. If unsuccessful, outputs an error
* telling why it failed.
*
* @param fileName The target filename without a path or extension.
* @param sections The HashMap containing the Settings we want to serialize.
* @param view The current view.
*/
fun saveFile(
fileName: String,
sections: TreeMap<String, SettingSection>,
view: SettingsActivityView
) {
val ini = getSettingsFile(fileName)
try {
val writer = Wini(ini)
val keySet: Set<String> = sections.keys
for (key in keySet) {
val section = sections[key]
writeSection(writer, section!!)
}
writer.store()
} catch (e: IOException) {
Log.error("[SettingsFile] File not found: " + fileName + ".ini: " + e.message)
view.showToastMessage(
YuzuApplication.appContext
.getString(R.string.error_saving, fileName, e.message),
false
)
}
}
fun saveCustomGameSettings(gameId: String?, sections: HashMap<String, SettingSection?>) {
val sortedSections: Set<String> = TreeSet(sections.keys)
for (sectionKey in sortedSections) {
val section = sections[sectionKey]
val settings = section!!.settings
val sortedKeySet: Set<String> = TreeSet(settings.keys)
for (settingKey in sortedKeySet) {
val setting = settings[settingKey]
NativeLibrary.setUserSetting(
gameId, mapSectionNameFromIni(
section.name
), setting!!.key, setting.valueAsString
)
}
}
}
private fun mapSectionNameFromIni(generalSectionName: String): String? {
return if (sectionsMap.getForward(generalSectionName) != null) {
sectionsMap.getForward(generalSectionName)
} else generalSectionName
}
private fun mapSectionNameToIni(generalSectionName: String): String {
return if (sectionsMap.getBackward(generalSectionName) != null) {
sectionsMap.getBackward(generalSectionName).toString()
} else generalSectionName
}
private fun getSettingsFile(fileName: String): File {
return File(
DirectoryInitialization.userDirectory + "/config/" + fileName + ".ini"
)
}
private fun getCustomGameSettingsFile(gameId: String): File {
return File(DirectoryInitialization.userDirectory + "/GameSettings/" + gameId + ".ini")
}
private fun sectionFromLine(line: String, isCustomGame: Boolean): SettingSection {
var sectionName: String = line.substring(1, line.length - 1)
if (isCustomGame) {
sectionName = mapSectionNameToIni(sectionName)
}
return SettingSection(sectionName)
}
/**
* For a line of text, determines what type of data is being represented, and returns
* a Setting object containing this data.
*
* @param line The line of text being parsed.
* @return A typed Setting containing the key/value contained in the line.
*/
private fun settingFromLine(line: String): AbstractSetting? {
val splitLine = line.split("=".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
if (splitLine.size != 2) {
Log.warning("Skipping invalid config line \"$line\"")
return null
}
val key = splitLine[0].trim { it <= ' ' }
val value = splitLine[1].trim { it <= ' ' }
if (value.isEmpty()) {
Log.warning("Skipping null value in config line \"$line\"")
return null
}
val booleanSetting = BooleanSetting.from(key)
if (booleanSetting != null) {
booleanSetting.boolean = value.toBoolean()
return booleanSetting
}
val intSetting = IntSetting.from(key)
if (intSetting != null) {
intSetting.int = value.toInt()
return intSetting
}
val floatSetting = FloatSetting.from(key)
if (floatSetting != null) {
floatSetting.float = value.toFloat()
return floatSetting
}
return StringSetting.from(key)
}
/**
* Writes the contents of a Section HashMap to disk.
*
* @param parser A Wini pointed at a file on disk.
* @param section A section containing settings to be written to the file.
*/
private fun writeSection(parser: Wini, section: SettingSection) {
// Write the section header.
val header = section.name
// Write this section's values.
val settings = section.settings
val keySet: Set<String> = settings.keys
for (key in keySet) {
val setting = settings[key]
parser.put(header, setting!!.key, setting.valueAsString)
}
}
}
