1 files changed, 245 insertions, 0 deletions
diff --git a/src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/utils/SettingsFile.kt b/src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/utils/SettingsFile.kt
new file mode 100644
index 000000000..8e21c65f0
--- /dev/null
+++ b/src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/utils/SettingsFile.kt
@@ -0,0 +1,245 @@
+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"
+    const val KEY_DESIGN = "design"
+
+    // CPU
+    const val KEY_CPU_ACCURACY = "cpu_accuracy"
+
+    // System
+    const val KEY_USE_DOCKED_MODE = "use_docked_mode"
+    const val KEY_REGION_INDEX = "region_index"
+    const val KEY_LANGUAGE_INDEX = "language_index"
+    const val KEY_RENDERER_BACKEND = "backend"
+
+    // Renderer
+    const val KEY_RENDERER_RESOLUTION = "resolution_setup"
+    const val KEY_RENDERER_ASPECT_RATIO = "aspect_ratio"
+    const val KEY_RENDERER_ACCURACY = "gpu_accuracy"
+    const val KEY_RENDERER_ASYNCHRONOUS_SHADERS = "use_asynchronous_shaders"
+    const val KEY_RENDERER_FORCE_MAX_CLOCK = "force_max_clock"
+    const val KEY_RENDERER_USE_SPEED_LIMIT = "use_speed_limit"
+    const val KEY_RENDERER_DEBUG = "debug"
+    const val KEY_RENDERER_SPEED_LIMIT = "speed_limit"
+
+    // Audio
+    const val KEY_AUDIO_VOLUME = "volume"
+    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(current, 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 current The section currently being parsed by the consuming method.
+     * @param line    The line of text being parsed.
+     * @return A typed Setting containing the key/value contained in the line.
+     */
+    private fun settingFromLine(current: SettingSection, line: String): Setting? {
+        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
+        }
+        try {
+            val valueAsInt = value.toInt()
+            return IntSetting(key, current.name, valueAsInt)
+        } catch (_: NumberFormatException) {
+        }
+        try {
+            val valueAsFloat = value.toFloat()
+            return FloatSetting(key, current.name, valueAsFloat)
+        } catch (_: NumberFormatException) {
+        }
+        return StringSetting(key, current.name, value)
+    }
+
+    /**
+     * 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)
+        }
+    }
+}