am 04bb419c: am ddafcf82: Merge "Fix bugs and add tests" (0d72a230) · Commits · e / os / android_packages_inputmethods_LatinIME

java/src/com/android/inputmethod/latin/StringUtils.java

+20 −9

Original line number	Diff line number	Diff line
		@@ -115,11 +115,12 @@ public final class StringUtils {
		// - This does not work for Greek, because it returns upper case instead of title case.
		// - It does not work for Serbian, because it fails to account for the "lj" character,
		// which should be "Lj" in title case and "LJ" in upper case.
		// - It does not work for Dutch, because it fails to account for the "ij" digraph, which
		// are two different characters but both should be capitalized as "IJ" as if they were
		// a single letter.
		// - It also does not work with unicode surrogate code points.
		return s.toUpperCase(locale).charAt(0) + s.substring(1);
		// - It does not work for Dutch, because it fails to account for the "ij" digraph when it's
		// written as two separate code points. They are two different characters but both should
		// be capitalized as "IJ" as if they were a single letter in most words (not all). If the
		// unicode char for the ligature is used however, it works.
		final int cutoff = s.offsetByCodePoints(0, 1);
		return s.substring(0, cutoff).toUpperCase(locale) + s.substring(cutoff).toLowerCase(locale);
		}

		private static final int[] EMPTY_CODEPOINTS = {};
		@@ -176,17 +177,27 @@ public final class StringUtils {
		return list.toArray(new String[list.size()]);
		}

		// This method assumes the text is not empty or null.
		// This method assumes the text is not null. For the empty string, it returns CAPITALIZE_NONE.
		public static int getCapitalizationType(final String text) {
		// If the first char is not uppercase, then the word is either all lower case or
		// camel case, and in either case we return CAPITALIZE_NONE.
		if (!Character.isUpperCase(text.codePointAt(0))) return CAPITALIZE_NONE;
		final int len = text.length();
		int index = 0;
		for (; index < len; index = text.offsetByCodePoints(index, 1)) {
		if (Character.isLetter(text.codePointAt(index))) {
		break;
		}
		}
		if (index == len) return CAPITALIZE_NONE;
		if (!Character.isUpperCase(text.codePointAt(index))) {
		return CAPITALIZE_NONE;
		}
		int capsCount = 1;
		int letterCount = 1;
		for (int i = 1; i < len; i = text.offsetByCodePoints(i, 1)) {
		for (index = text.offsetByCodePoints(index, 1); index < len;
		index = text.offsetByCodePoints(index, 1)) {
		if (1 != capsCount && letterCount != capsCount) break;
		final int codePoint = text.codePointAt(i);
		final int codePoint = text.codePointAt(index);
		if (Character.isUpperCase(codePoint)) {
		++capsCount;
		++letterCount;

tests/src/com/android/inputmethod/latin/StringUtilsTests.java

+46 −0

Original line number	Diff line number	Diff line
		@@ -19,6 +19,8 @@ package com.android.inputmethod.latin;
		import android.test.AndroidTestCase;
		import android.test.suitebuilder.annotation.SmallTest;

		import java.util.Locale;

		@SmallTest
		public class StringUtilsTests extends AndroidTestCase {
		public void testContainsInArray() {
		@@ -90,4 +92,48 @@ public class StringUtilsTests extends AndroidTestCase {
		assertEquals("in 5 elements at position 2,4", "key1,key3,key5",
		StringUtils.removeFromCsvIfExists("key", "key1,key,key3,key,key5"));
		}

		public void testToTitleCase() {
		assertEquals("SSaa",
		StringUtils.toTitleCase("ßaa", Locale.GERMAN));
		assertEquals("Aßa",
		StringUtils.toTitleCase("aßa", Locale.GERMAN));
		assertEquals("Iab",
		StringUtils.toTitleCase("iab", Locale.ENGLISH));
		assertEquals("Camelcase",
		StringUtils.toTitleCase("cAmElCaSe", Locale.ENGLISH));
		assertEquals("İab",
		StringUtils.toTitleCase("iab", new Locale("tr")));
		assertEquals("Aib",
		StringUtils.toTitleCase("AİB", new Locale("tr")));
		// For one character, toTitleCase returns the string as is. Not sure what the motivation
		// is, but that's how it works now.
		assertEquals("a",
		StringUtils.toTitleCase("a", Locale.ENGLISH));
		assertEquals("A",
		StringUtils.toTitleCase("A", Locale.ENGLISH));
		}

		public void testGetCapitalizationType() {
		assertEquals(StringUtils.CAPITALIZE_NONE,
		StringUtils.getCapitalizationType("capitalize"));
		assertEquals(StringUtils.CAPITALIZE_NONE,
		StringUtils.getCapitalizationType("cApITalize"));
		assertEquals(StringUtils.CAPITALIZE_NONE,
		StringUtils.getCapitalizationType("capitalizE"));
		assertEquals(StringUtils.CAPITALIZE_NONE,
		StringUtils.getCapitalizationType("__c a piu$@tali56ze"));
		assertEquals(StringUtils.CAPITALIZE_FIRST,
		StringUtils.getCapitalizationType("A__c a piu$@tali56ze"));
		assertEquals(StringUtils.CAPITALIZE_FIRST,
		StringUtils.getCapitalizationType("Capitalize"));
		assertEquals(StringUtils.CAPITALIZE_FIRST,
		StringUtils.getCapitalizationType(" Capitalize"));
		assertEquals(StringUtils.CAPITALIZE_ALL,
		StringUtils.getCapitalizationType("CAPITALIZE"));
		assertEquals(StringUtils.CAPITALIZE_ALL,
		StringUtils.getCapitalizationType(" PI26LIE"));
		assertEquals(StringUtils.CAPITALIZE_NONE,
		StringUtils.getCapitalizationType(""));
		}
		}