Updated on 2026-08-14

core/ui/src/main/java/com/tangem/core/ui/utils/InputFormatting.kt

@@ -0,0 +1,27 @@
+package com.tangem.core.ui.utils
+
+/**
+ * Formats input [String] for InputField, to remove wrong symbols, letters etc
+ * Use [decimals] for cut this number symbols after floating point
+ *
+ * Example (with 8 decimals):
+ * input string - ab123.46377372ab53
+ * result string 123.46377372
+ */
+fun getValidatedNumberWithFixedDecimals(text: String, decimals: Int): String {
+    val filteredChars = text.filterIndexed { index, c ->
+        c.isDigit()
+            || (c == '.' && index != 0 && text.indexOf('.') == index)
+            || (c == '.' && index != 0 && text.count { it == '.' } <= 1)
+    }
+    // If dot is present, take first 3 digits before decimal and first decimals digits after decimal
+    return if (filteredChars.count { it == '.' } == 1) {
+        val beforeDecimal = filteredChars.substringBefore('.')
+        val afterDecimal = filteredChars.substringAfter('.')
+        beforeDecimal + "." + afterDecimal.take(decimals)
+    }
+    // If there is no dot, just take all digits
+    else {
+        filteredChars
+    }
+}