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can not encode negative bytes #2

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a-trzewik opened this issue May 20, 2021 · 0 comments

a-trzewik commented May 20, 2021 •

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java.lang.ArrayIndexOutOfBoundsException: Index -23 out of bounds for length 45

at nl.minvws.encoding.Base45$Encoder.encode(Base45.java:74)
at nl.minvws.encoding.Base45$Encoder.encodeToString(Base45.java:98)

It is because in java bytes can be negative so the value ("see below") can be also negative

        for (int i = 0; i < wholeChunkLength;) {
            int value = src[i++] * ByteSize + src[i++];
            result[resultIndex++] = toBase45[value % BaseSize];
            result[resultIndex++] = toBase45[value / BaseSize % BaseSize];
            result[resultIndex++] = toBase45[value / (BaseSize * BaseSize) % BaseSize];
        }

see

https://mkyong.com/java/java-convert-bytes-to-unsigned-bytes/

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