Zig 0.17.0-dev (Split by item)

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takeDelimiter

Returns a slice of the next bytes of buffered data from the stream until delimiter is found, advancing the seek position past the delimiter.

Returned slice excludes the delimiter. End-of-stream is treated equivalent to a delimiter, unless it would result in a length 0 return value, in which case null is returned instead.

If the delimiter is not found within a number of bytes matching the capacity of this Reader, error.StreamTooLong is returned. In such case, the stream state is unmodified as if this function was never called.

Invalidates previously returned values from peek.

File

lib/std/Io/Reader.zig:899

Code

pub fn takeDelimiter(r: *Reader, delimiter: u8) error{ ReadFailed, StreamTooLong }!?[]u8 {
    const inclusive = r.peekDelimiterInclusive(delimiter) catch |err| switch (err) {
        error.EndOfStream => {
            const remaining = r.buffer[r.seek..r.end];
            if (remaining.len == 0) return null;
            r.toss(remaining.len);
            return remaining;
        },
        else => |e| return e,
    };
    r.toss(inclusive.len);
    return inclusive[0 .. inclusive.len - 1];
}