Accessor naming should be locale-independant

2015-09-25 16:24:43 +03:00
parent 219fc46a36
commit 069ce12604
3 changed files with 18 additions and 4 deletions
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.util.capitalizeDecapitalize
+
+/**
+ * "FooBar" -> "fooBar"
+ * "FOOBar" -> "fooBar"
+ * "FOO" -> "foo"
+ */
+public fun String.decapitalizeSmart(): String {
+    if (isEmpty() || !charAt(0).isUpperCase()) return this
+
+    if (length() == 1 || !charAt(1).isUpperCase()) {
+        return decapitalize()
+    }
+
+    val secondWordStart = (indices.firstOrNull { !charAt(it).isUpperCase() }
+                           ?: return toLowerCase()) - 1
+    return substring(0, secondWordStart).toLowerCase() + substring(secondWordStart)
+}
+
+/**
+ * "fooBar" -> "FOOBar"
+ * "FooBar" -> "FOOBar"
+ * "foo" -> "FOO"
+ */
+public fun String.capitalizeFirstWord(): String {
+    val secondWordStart = indices.drop(1).firstOrNull { !charAt(it).isLowerCase() }
+                          ?: return toUpperCase()
+    return substring(0, secondWordStart).toUpperCase() + substring(secondWordStart)
+}
+
+public fun String.capitalizeAsciiOnly(): String {
+    if (isEmpty()) return this
+    val c = charAt(0)
+    return if (c in 'a'..'z')
+        c.toUpperCase() + substring(1)
+    else
+        this
+}
+
+