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Work on #9 - group BCD routines in a convenience class

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This commit is contained in:
Enrique Zamudio
2013-04-23 11:42:39 -05:00
parent f1055fddce
commit 04ba54e522
3 changed files with 72 additions and 39 deletions
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src/main/java/com/solab/iso8583/parse/NumericParseInfo.java
+7 -18
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@@ -24,6 +24,7 @@ import java.text.ParseException;
import com.solab.iso8583.CustomField;
import com.solab.iso8583.IsoType;
import com.solab.iso8583.IsoValue;
import com.solab.iso8583.util.Bcd;
/** This class is used to parse NUMERIC fields.
*
@@ -49,30 +50,18 @@ public class NumericParseInfo extends AlphaNumericFieldParseInfo {
}
//A long covers up to 18 digits
if (length < 19) {
long l = 0;
long power = 1L;
for (int i = pos + (length / 2) + (length % 2) - 1; i >= pos; i--) {
l += (buf[i] & 0x0f) * power;
power *= 10L;
l += ((buf[i] & 0xf0) >> 4) * power;
power *= 10L;
}
return new IsoValue<Number>(IsoType.NUMERIC, l, length, null);
return new IsoValue<Number>(IsoType.NUMERIC, Bcd.decodeToLong(buf, pos, length),
length, null);
} else {
//Use a BigInteger
char[] digits = new char[length];
int start = 0;
try {
for (int i = pos; i < pos + (length / 2) + (length % 2); i++) {
digits[start++] = (char)(((buf[i] & 0xf0) >> 4) + 48);
digits[start++] = (char)((buf[i] & 0x0f) + 48);
}
return new IsoValue<Number>(IsoType.NUMERIC,
Bcd.decodeToBigInteger(buf, pos, length), length, null);
} catch (IndexOutOfBoundsException ex) {
throw new ParseException(String.format(
"Insufficient data for bin %s field %d of length %d, pos %d",
type, field, length, pos), pos);
"Insufficient data for bin %s field %d of length %d, pos %d",
type, field, length, pos), pos);
}
return new IsoValue<Number>(IsoType.NUMERIC, new BigInteger(new String(digits)), length, null);
}
}