Restructure library modules

terminal/ -> terminal-emulator/
view/ -> terminal-view/

terminal-emulator/src/test/java/com/termux/terminal/WcWidthTest.java

@@ -0,0 +1,85 @@
+package com.termux.terminal;
+
+import junit.framework.TestCase;
+
+public class WcWidthTest extends TestCase {
+
+	private static void assertWidthIs(int expectedWidth, int codePoint) {
+		int wcWidth = WcWidth.width(codePoint);
+		assertEquals(expectedWidth, wcWidth);
+	}
+
+	public void testPrintableAscii() {
+		for (int i = 0x20; i <= 0x7E; i++) {
+			assertWidthIs(1, i);
+		}
+	}
+
+    public void testSomeWidthOne() {
+        assertWidthIs(1, 'å');
+        assertWidthIs(1, 'ä');
+        assertWidthIs(1, 'ö');
+        assertWidthIs(1, 0x23F2);
+    }
+
+	public void testSomeWide() {
+		assertWidthIs(2, 'Ａ');
+		assertWidthIs(2, 'Ｂ');
+		assertWidthIs(2, 'Ｃ');
+		assertWidthIs(2, '中');
+		assertWidthIs(2, '文');
+
+		assertWidthIs(2, 0x679C);
+		assertWidthIs(2, 0x679D);
+
+		assertWidthIs(2, 0x2070E);
+		assertWidthIs(2, 0x20731);
+
+		assertWidthIs(1, 0x1F781);
+	}
+
+	public void testSomeNonWide() {
+		assertWidthIs(1, 0x1D11E);
+		assertWidthIs(1, 0x1D11F);
+	}
+
+	public void testCombining() {
+        assertWidthIs(0, 0x0302);
+        assertWidthIs(0, 0x0308);
+        assertWidthIs(0, 0xFE0F);
+    }
+
+    public void testWordJoiner() {
+        // https://en.wikipedia.org/wiki/Word_joiner
+        // The word joiner (WJ) is a code point in Unicode used to separate words when using scripts
+        // that do not use explicit spacing. It is encoded since Unicode version 3.2
+        // (released in 2002) as U+2060 WORD JOINER (HTML &#8288;).
+        // The word joiner does not produce any space, and prohibits a line break at its position.
+        assertWidthIs(0, 0x2060);
+	}
+
+	public void testWatch() {
+
+	}
+
+	public void testSofthyphen() {
+		// http://osdir.com/ml/internationalization.linux/2003-05/msg00006.html:
+		// "Existing implementation practice in terminals is that the SOFT HYPHEN is
+		// a spacing graphical character, and the purpose of my wcwidth() was to
+		// predict the advancement of the cursor position after a string is sent to
+		// a terminal. Hence, I have no choice but to keep wcwidth(SOFT HYPHEN) = 1.
+		// VT100-style terminals do not hyphenate."
+		assertWidthIs(1, 0x00AD);
+	}
+
+	public void testHangul() {
+		assertWidthIs(1, 0x11A3);
+	}
+
+    public void testEmojis() {
+        assertWidthIs(2, 0x1F428); // KOALA.
+        assertWidthIs(2, 0x231a);  // WATCH.
+        assertWidthIs(2, 0x1F643); // UPSIDE-DOWN FACE (Unicode 8).
+    }
+
+}