public boolean isValidMultiBytes(
final byte[] b, final int from, final int limit, final String encoding) {
// FIXME: magic number
if (encoding.equalsIgnoreCase("Big5")) {
return Convertor.isValidBig5(b, from, limit);
} else if (encoding.equalsIgnoreCase("UTF-8")) {
return Convertor.isValidUTF8(b, from, limit);
} else {
// TODO: 其他的編碼
System.out.println("Unknown Encoding: " + encoding);
return true;
}
}
private Convertor() {
int i1, i2;
this.ucs2bytes = new byte[64 * 1024];
this.big5bytes = new byte[128 * 1024];
Convertor.readFile("conv/ucs2.txt", this.ucs2bytes);
Convertor.readFile("conv/big5.txt", this.big5bytes);
this.ucs2chars = new char[this.ucs2bytes.length / 2];
// 把讀進來的 ucs2 bytes 處理成標準的 (ucs2) char
for (int i = 0; i < this.ucs2bytes.length; i += 2) {
i1 = (this.ucs2bytes[i] < 0 ? 256 : 0) + this.ucs2bytes[i];
i2 = (this.ucs2bytes[i + 1] < 0 ? 256 : 0) + this.ucs2bytes[i + 1];
this.ucs2chars[i / 2] = (char) (i1 << 8 | i2);
}
}
/**
* Check if a message contains any wide characters.
*
* @param message the message to be checked
* @return true if the message contains wide characters; false, otherwise.
*/
public static boolean containsWideChar(String message) {
for (int i = 0; i < message.length(); i++) {
final char c = message.charAt(i);
if (Convertor.isWideChar(c)) {
return true;
}
}
return false;
}