Zig 0.17.0-dev (Split by item)

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peekDelimiterExclusive

Returns a slice of the next bytes of buffered data from the stream until delimiter is found, without advancing the seek position.

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 error.EndOfStream 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:930

Code

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