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Added support for "05 Macro" and "06 Macro" in ASCII encodation

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git-svn-id: https://zxing.googlecode.com/svn/trunk@526 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
srowen 2008-07-23 18:25:16 +00:00
parent 08d44240aa
commit cebac631ac
1 changed files with 12 additions and 6 deletions
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16
core/src/com/google/zxing/datamatrix/decoder/DecodedBitStreamParser.java
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@ -74,10 +74,11 @@ final class DecodedBitStreamParser {
static String decode(byte[] bytes) throws ReaderException {
BitSource bits = new BitSource(bytes);
StringBuffer result = new StringBuffer();
StringBuffer resultTrailer = new StringBuffer(0);
int mode = ASCII_ENCODE;
do {
if (mode == ASCII_ENCODE) {
mode = decodeAsciiSegment(bits, result);
mode = decodeAsciiSegment(bits, result, resultTrailer);
} else {
switch (mode) {
case C40_ENCODE:
@ -101,14 +102,17 @@ final class DecodedBitStreamParser {
mode = ASCII_ENCODE;
}
} while (mode != PAD_ENCODE && bits.available() > 0);
if (resultTrailer.length() > 0) {
result.append(resultTrailer);
}
return result.toString();
}
/**
* See ISO 16022:2006, 5.2.3 and Annex C, Table C.2
*/
private static int decodeAsciiSegment(BitSource bits,
StringBuffer result) throws ReaderException {
private static int decodeAsciiSegment(BitSource bits, StringBuffer result, StringBuffer resultTrailer)
throws ReaderException {
boolean upperShift = false;
do {
int oneByte = bits.readBits(8);
@ -140,9 +144,11 @@ final class DecodedBitStreamParser {
} else if (oneByte == 235) { // Upper Shift (shift to Extended ASCII)
upperShift = true;
} else if (oneByte == 236) { // 05 Macro
throw new ReaderException("Currently not supporting 05 Macro");
result.append("[)>\u001E05\u001D");
resultTrailer.insert(0, "\u001E\u0004");
} else if (oneByte == 237) { // 06 Macro
throw new ReaderException("Currently not supporting 06 Macro");
result.append("[)>\u001E06\u001D");
resultTrailer.insert(0, "\u001E\u0004");
} else if (oneByte == 238) { // Latch to ANSI X12 encodation
return ANSIX12_ENCODE;
} else if (oneByte == 239) { // Latch to Text encodation