新增音萌

view/support/support/js/utf.js

@@ -0,0 +1,68 @@
+/* utf.js - UTF-8 <=> UTF-16 convertion
+ *
+ * Copyright (C) 1999 Masanao Izumo <iz@onicos.co.jp>
+ * Version: 1.0
+ * LastModified: Dec 25 1999
+ * This library is free.  You can redistribute it and/or modify it.
+ */
+
+/*
+ * Interfaces:
+ * utf8 = utf16to8(utf16);
+ * utf16 = utf16to8(utf8);
+ */
+
+function utf16to8(str) {
+    var out, i, len, c;
+
+    out = "";
+    len = str.length;
+    for(i = 0; i < len; i++) {
+	c = str.charCodeAt(i);
+	if ((c >= 0x0001) && (c <= 0x007F)) {
+	    out += str.charAt(i);
+	} else if (c > 0x07FF) {
+	    out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
+	    out += String.fromCharCode(0x80 | ((c >>  6) & 0x3F));
+	    out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));
+	} else {
+	    out += String.fromCharCode(0xC0 | ((c >>  6) & 0x1F));
+	    out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));
+	}
+    }
+    return out;
+}
+
+function utf8to16(str) {
+    var out, i, len, c;
+    var char2, char3;
+
+    out = "";
+    len = str.length;
+    i = 0;
+    while(i < len) {
+	c = str.charCodeAt(i++);
+	switch(c >> 4)
+	{ 
+	  case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
+	    // 0xxxxxxx
+	    out += str.charAt(i-1);
+	    break;
+	  case 12: case 13:
+	    // 110x xxxx   10xx xxxx
+	    char2 = str.charCodeAt(i++);
+	    out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
+	    break;
+	  case 14:
+	    // 1110 xxxx  10xx xxxx  10xx xxxx
+	    char2 = str.charCodeAt(i++);
+	    char3 = str.charCodeAt(i++);
+	    out += String.fromCharCode(((c & 0x0F) << 12) |
+					   ((char2 & 0x3F) << 6) |
+					   ((char3 & 0x3F) << 0));
+	    break;
+	}
+    }
+
+    return out;
+}