refactor: add Char.isAsciiPrintable function

Author: WhiredPlanck

app/src/main/java/com/osfans/trime/core/Rime.kt

@@ -9,6 +9,7 @@ import com.osfans.trime.data.opencc.OpenCCDictManager
 import com.osfans.trime.data.prefs.AppPrefs
 import com.osfans.trime.data.schema.SchemaManager
 import com.osfans.trime.util.appContext
+import com.osfans.trime.util.isAsciiPrintable
 import com.osfans.trime.util.isStorageAvailable
 import kotlinx.coroutines.channels.BufferOverflow
 import kotlinx.coroutines.flow.MutableSharedFlow
@@ -214,15 +215,9 @@ class Rime : RimeApi, RimeLifecycleOwner {
             }
         }
 
-        private fun isValidText(text: CharSequence?): Boolean {
-            if (text.isNullOrEmpty()) return false
-            val ch = text.toString().codePointAt(0)
-            return ch in 0x20..0x7f
-        }
-
         @JvmStatic
         fun simulateKeySequence(sequence: CharSequence): Boolean {
-            if (!isValidText(sequence)) return false
+            if (!sequence.first().isAsciiPrintable()) return false
             Timber.d("simulateKeySequence: $sequence")
             return simulateRimeKeySequence(
                 sequence.toString().replace("{}", "{braceleft}{braceright}"),

app/src/main/java/com/osfans/trime/ime/text/TextInputManager.kt

@@ -35,7 +35,7 @@ import com.osfans.trime.ui.main.settings.ColorPickerDialog
 import com.osfans.trime.ui.main.settings.KeySoundEffectPickerDialog
 import com.osfans.trime.ui.main.settings.ThemePickerDialog
 import com.osfans.trime.util.ShortcutUtils
-import com.osfans.trime.util.startsWithAsciiChar
+import com.osfans.trime.util.isAsciiPrintable
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
@@ -461,7 +461,7 @@ class TextInputManager(
 
     override fun onText(text: CharSequence?) {
         text ?: return
-        if (!text.startsWithAsciiChar() && Rime.isComposing) {
+        if (!text.first().isAsciiPrintable() && Rime.isComposing) {
             Rime.commitComposition()
             trime.commitRimeText()
         }

app/src/main/java/com/osfans/trime/util/Char.kt

@@ -0,0 +1,4 @@
+package com.osfans.trime.util
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun Char.isAsciiPrintable(): Boolean = code in 32 until 127