1 files changed, 141 insertions, 0 deletions
diff --git a/src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/ParamPackage.kt b/src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/ParamPackage.kt
new file mode 100644
index 000000000..83fc7da3c
--- /dev/null
+++ b/src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/ParamPackage.kt
@@ -0,0 +1,141 @@
+// SPDX-FileCopyrightText: 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.utils
+
+// Kotlin version of src/common/param_package.h
+class ParamPackage(serialized: String = "") {
+    private val KEY_VALUE_SEPARATOR = ":"
+    private val PARAM_SEPARATOR = ","
+
+    private val ESCAPE_CHARACTER = "$"
+    private val KEY_VALUE_SEPARATOR_ESCAPE = "$0"
+    private val PARAM_SEPARATOR_ESCAPE = "$1"
+    private val ESCAPE_CHARACTER_ESCAPE = "$2"
+
+    private val EMPTY_PLACEHOLDER = "[empty]"
+
+    val data = mutableMapOf<String, String>()
+
+    init {
+        val pairs = serialized.split(PARAM_SEPARATOR)
+        for (pair in pairs) {
+            val keyValue = pair.split(KEY_VALUE_SEPARATOR).toMutableList()
+            if (keyValue.size != 2) {
+                Log.error("[ParamPackage] Invalid key pair $keyValue")
+                continue
+            }
+
+            keyValue.forEachIndexed { i: Int, _: String ->
+                keyValue[i] = keyValue[i].replace(KEY_VALUE_SEPARATOR_ESCAPE, KEY_VALUE_SEPARATOR)
+                keyValue[i] = keyValue[i].replace(PARAM_SEPARATOR_ESCAPE, PARAM_SEPARATOR)
+                keyValue[i] = keyValue[i].replace(ESCAPE_CHARACTER_ESCAPE, ESCAPE_CHARACTER)
+            }
+
+            set(keyValue[0], keyValue[1])
+        }
+    }
+
+    constructor(params: List<Pair<String, String>>) : this() {
+        params.forEach {
+            data[it.first] = it.second
+        }
+    }
+
+    fun serialize(): String {
+        if (data.isEmpty()) {
+            return EMPTY_PLACEHOLDER
+        }
+
+        val result = StringBuilder()
+        data.forEach {
+            val keyValue = mutableListOf(it.key, it.value)
+            keyValue.forEachIndexed { i, _ ->
+                keyValue[i] = keyValue[i].replace(ESCAPE_CHARACTER, ESCAPE_CHARACTER_ESCAPE)
+                keyValue[i] = keyValue[i].replace(PARAM_SEPARATOR, PARAM_SEPARATOR_ESCAPE)
+                keyValue[i] = keyValue[i].replace(KEY_VALUE_SEPARATOR, KEY_VALUE_SEPARATOR_ESCAPE)
+            }
+            result.append("${keyValue[0]}$KEY_VALUE_SEPARATOR${keyValue[1]}$PARAM_SEPARATOR")
+        }
+        return result.removeSuffix(PARAM_SEPARATOR).toString()
+    }
+
+    fun get(key: String, defaultValue: String): String =
+        if (has(key)) {
+            data[key]!!
+        } else {
+            Log.debug("[ParamPackage] key $key not found")
+            defaultValue
+        }
+
+    fun get(key: String, defaultValue: Int): Int =
+        if (has(key)) {
+            try {
+                data[key]!!.toInt()
+            } catch (e: NumberFormatException) {
+                Log.debug("[ParamPackage] failed to convert ${data[key]!!} to int")
+                defaultValue
+            }
+        } else {
+            Log.debug("[ParamPackage] key $key not found")
+            defaultValue
+        }
+
+    private fun Int.toBoolean(): Boolean =
+        if (this == 1) {
+            true
+        } else if (this == 0) {
+            false
+        } else {
+            throw Exception("Tried to convert a value to a boolean that was not 0 or 1!")
+        }
+
+    fun get(key: String, defaultValue: Boolean): Boolean =
+        if (has(key)) {
+            try {
+                get(key, if (defaultValue) 1 else 0).toBoolean()
+            } catch (e: Exception) {
+                Log.debug("[ParamPackage] failed to convert ${data[key]!!} to boolean")
+                defaultValue
+            }
+        } else {
+            Log.debug("[ParamPackage] key $key not found")
+            defaultValue
+        }
+
+    fun get(key: String, defaultValue: Float): Float =
+        if (has(key)) {
+            try {
+                data[key]!!.toFloat()
+            } catch (e: NumberFormatException) {
+                Log.debug("[ParamPackage] failed to convert ${data[key]!!} to float")
+                defaultValue
+            }
+        } else {
+            Log.debug("[ParamPackage] key $key not found")
+            defaultValue
+        }
+
+    fun set(key: String, value: String) {
+        data[key] = value
+    }
+
+    fun set(key: String, value: Int) {
+        data[key] = value.toString()
+    }
+
+    fun Boolean.toInt(): Int = if (this) 1 else 0
+    fun set(key: String, value: Boolean) {
+        data[key] = value.toInt().toString()
+    }
+
+    fun set(key: String, value: Float) {
+        data[key] = value.toString()
+    }
+
+    fun has(key: String): Boolean = data.containsKey(key)
+
+    fun erase(key: String) = data.remove(key)
+
+    fun clear() = data.clear()
+}