Represents array as String
for printing. Array length can be up to 32767
// Prefixes to be added to the offset values
// in <code>String toString(byte[], String)</code> method
final String[] offsetPrefix = {
"", //$NON-NLS-1$
"000", //$NON-NLS-1$
"00", //$NON-NLS-1$
"0", //$NON-NLS-1$
"" //$NON-NLS-1$
};
StringBuilder sb = new StringBuilder();
StringBuilder charForm = new StringBuilder();
int i=0;
for (i=0; i<array.length; i++) {
if (i%16 == 0) {
sb.append(prefix);
// put offset
String offset = Integer.toHexString(i);
sb.append(offsetPrefix[offset.length()]);
sb.append(offset);
// clear char form for new line
charForm.delete(0, charForm.length());
}
// put delimiter
sb.append(' ");
// put current byte
int currentByte = (0xff & array[i]);
String hexTail = Integer.toHexString(currentByte);
if (hexTail.length() == 1) {
sb.append('0");
}
sb.append(hexTail);
// form character representation part
char currentChar = (char)(currentByte & 0xffff);
// FIXME if needed (how to distinguish PRINTABLE chars?)
charForm.append(
(Character.isISOControl(currentChar) ? '." : currentChar));
// Add additional delimiter for each 8 values
if ((i+1)%8 == 0) {
sb.append(' ");
}
// Add character representation for each line
if ((i+1)%16 == 0) {
sb.append(' ");
sb.append(charForm.toString());
sb.append('\n");
}
}
// form last line
if (i%16 != 0) {
int ws2add = 16 - i%16;
for (int j=0; j<ws2add; j++) {
sb.append(" "); //$NON-NLS-1$
}
if (ws2add > 8) {
sb.append(' ");
}
sb.append(" "); //$NON-NLS-1$
sb.append(charForm.toString());
sb.append('\n");
}
return sb.toString();
