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V2rayNG/app/src/main/kotlin/com/v2ray/ang/extension/_Ext.kt

@@ -0,0 +1,80 @@
+package com.v2ray.ang.extension
+
+import android.content.Context
+import android.os.Build
+import android.widget.Toast
+import com.v2ray.ang.AngApplication
+import me.drakeet.support.toast.ToastCompat
+import org.json.JSONObject
+import java.net.URI
+import java.net.URLConnection
+
+/**
+ * Some extensions
+ */
+
+val Context.v2RayApplication: AngApplication
+    get() = applicationContext as AngApplication
+
+fun Context.toast(message: Int): Toast = ToastCompat
+        .makeText(this, message, Toast.LENGTH_SHORT)
+        .apply {
+            show()
+        }
+
+fun Context.toast(message: CharSequence): Toast = ToastCompat
+        .makeText(this, message, Toast.LENGTH_SHORT)
+        .apply {
+            show()
+        }
+
+fun JSONObject.putOpt(pair: Pair<String, Any>) = putOpt(pair.first, pair.second)
+fun JSONObject.putOpt(pairs: Map<String, Any>) = pairs.forEach { putOpt(it.key to it.value) }
+
+const val threshold = 1000
+const val divisor = 1024F
+
+fun Long.toSpeedString() = toTrafficString() + "/s"
+
+fun Long.toTrafficString(): String {
+    if (this == 0L)
+        return "\t\t\t0\t  B"
+
+    if (this < threshold)
+        return "${this.toFloat().toShortString()}\t  B"
+
+    val kib = this / divisor
+    if (kib < threshold)
+        return "${kib.toShortString()}\t KB"
+
+    val mib = kib / divisor
+    if (mib < threshold)
+        return "${mib.toShortString()}\t MB"
+
+    val gib = mib / divisor
+    if (gib < threshold)
+        return "${gib.toShortString()}\t GB"
+
+    val tib = gib / divisor
+    if (tib < threshold)
+        return "${tib.toShortString()}\t TB"
+
+    val pib = tib / divisor
+    if (pib < threshold)
+        return "${pib.toShortString()}\t PB"
+
+    return "∞"
+}
+
+private fun Float.toShortString(): String {
+    val s = "%.2f".format(this)
+    if (s.length <= 4)
+        return s
+    return s.substring(0, 4).removeSuffix(".")
+}
+
+val URLConnection.responseLength: Long
+    get() = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) contentLengthLong else contentLength.toLong()
+
+val URI.idnHost: String
+    get() = (host!!).replace("[", "").replace("]", "")