Examples with SliceUtf8.offsetOfCodePoint io.airlift.slice.SliceUtf8.offsetOfCodePoint used on opensource projects

Example 6 with SliceUtf8.offsetOfCodePoint

use of io.airlift.slice.SliceUtf8.offsetOfCodePoint in project presto by prestodb.

the class RcFileDecoderUtils method calculateTruncationLength.

private static int calculateTruncationLength(int maxCharacterCount, Slice slice, int offset, int length) {
    requireNonNull(slice, "slice is null");
    if (maxCharacterCount < 0) {
        throw new IllegalArgumentException("Max length must be greater or equal than zero");
    }
    if (length <= maxCharacterCount) {
        return length;
    }
    int indexEnd = offsetOfCodePoint(slice, offset, maxCharacterCount);
    if (indexEnd < 0) {
        return length;
    }
    return indexEnd - offset;
}

Example 7 with SliceUtf8.offsetOfCodePoint

use of io.airlift.slice.SliceUtf8.offsetOfCodePoint in project presto by prestodb.

the class Varchars method truncateToLength.

public static Slice truncateToLength(Slice slice, int maxLength) {
    requireNonNull(slice, "slice is null");
    if (maxLength < 0) {
        throw new IllegalArgumentException("Max length must be greater or equal than zero");
    }
    if (maxLength == 0) {
        return Slices.EMPTY_SLICE;
    }
    // min codepoint size is 1 byte.
    // if size in bytes is less than the max length
    // we don't need to decode codepoints
    int sizeInBytes = slice.length();
    if (sizeInBytes <= maxLength) {
        return slice;
    }
    int indexEnd = offsetOfCodePoint(slice, maxLength);
    if (indexEnd < 0) {
        return slice;
    }
    return slice.slice(0, indexEnd);
}