Superscript support

#138

data/common/src/main/java/com/sadellie/unitto/data/common/StringUtils.kt

@@ -75,3 +75,15 @@ fun String.isExpression(): Boolean {
     // Rest of the string must be just like positive
     return this.drop(1).isExpression()
 }
+
+fun String.normalizeSuperscript(): String = this
+    .replace('⁰', '0')
+    .replace('¹', '1')
+    .replace('²', '2')
+    .replace('³', '3')
+    .replace('⁴', '4')
+    .replace('⁵', '5')
+    .replace('⁶', '6')
+    .replace('⁷', '7')
+    .replace('⁸', '8')
+    .replace('⁹', '9')

data/common/src/test/java/com/sadellie/unitto/data/common/NormalizeSuperscriptTest.kt

@@ -0,0 +1,13 @@
+package com.sadellie.unitto.data.common
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class NormalizeSuperscriptTest {
+
+    @Test
+    fun normalizeSuperscript() {
+        val input = "⁰¹²³⁴⁵⁶⁷⁸⁹"
+        assertEquals("0123456789", input.normalizeSuperscript())
+    }
+}

data/model/src/main/java/com/sadellie/unitto/data/model/unit/AbstractUnit.kt

@@ -20,6 +20,7 @@ package com.sadellie.unitto.data.model.unit
 
 import android.content.Context
 import com.sadellie.unitto.data.common.lev
+import com.sadellie.unitto.data.common.normalizeSuperscript
 import com.sadellie.unitto.data.model.UnitGroup
 import java.math.BigDecimal
 
@@ -52,7 +53,10 @@ fun Sequence<AbstractUnit>.filterByLev(stringA: String, context: Context): Seque
     // List of pair: Unit and it's levDist
     val unitsWithDist = mutableListOf<Pair<AbstractUnit, Int>>()
     this.forEach { unit ->
-        val unitShortName: String = context.getString(unit.shortName).lowercase()
+        val unitShortName: String = context
+            .getString(unit.shortName)
+            .lowercase()
+            .normalizeSuperscript()
         /**
          * There is a chance that we search for unit with a specific short name. Such cases are
          * should be higher in the list. Best possible match.
@@ -62,7 +66,10 @@ fun Sequence<AbstractUnit>.filterByLev(stringA: String, context: Context): Seque
             return@forEach
         }
 
-        val unitFullName: String = context.getString(unit.displayName).lowercase()
+        val unitFullName: String = context
+            .getString(unit.displayName)
+            .lowercase()
+            .normalizeSuperscript()
 
         /**
          * There is chance that unit name doesn't need any edits (contains part of the query)