/*
* Copyright 2006-2007 Jeremias Maerki.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.zxing.datamatrix.encoder;
final class TextEncoder extends C40Encoder {
@Override
public int getEncodingMode() {
return HighLevelEncoder.TEXT_ENCODATION;
}
@Override
int encodeChar(char c, StringBuilder sb) {
if (c == ' ') {
sb.append('\3');
return 1;
}
if (c >= '0' && c <= '9') {
sb.append((char) (c - 48 + 4));
return 1;
}
if (c >= 'a' && c <= 'z') {
sb.append((char) (c - 97 + 14));
return 1;
}
if (c >= '\0' && c <= '\u001f') {
sb.append('\0'); // Shift 1 Set
sb.append(c);
return 2;
}
if (c >= '!' && c <= '/') {
sb.append('\1'); // Shift 2 Set
sb.append((char) (c - 33));
return 2;
}
if (c >= ':' && c <= '@') {
sb.append('\1'); // Shift 2 Set
sb.append((char) (c - 58 + 15));
return 2;
}
if (c >= '[' && c <= '_') {
sb.append('\1'); // Shift 2 Set
sb.append((char) (c - 91 + 22));
return 2;
}
if (c == '\u0060') {
sb.append('\2'); // Shift 3 Set
sb.append((char) (c - 96));
return 2;
}
if (c >= 'A' && c <= 'Z') {
sb.append('\2'); // Shift 3 Set
sb.append((char) (c - 65 + 1));
return 2;
}
if (c >= '{' && c <= '\u007f') {
sb.append('\2'); // Shift 3 Set
sb.append((char) (c - 123 + 27));
return 2;
}
if (c >= '\u0080') {
sb.append("\1\u001e"); // Shift 2, Upper Shift
int len = 2;
len += encodeChar((char) (c - 128), sb);
return len;
}
HighLevelEncoder.illegalCharacter(c);
return -1;
}
}