Zig 0.17.0-dev (Split by item)

This is an example of documentation generated by ZigDoc, an alternative to Zig's built-in Auto Doc feature. See also examples in other modes/formats. The project being documented here (as the example) is the Zig library itself.

writableVectorPosix

Reader.writableVectorPosix

pub fn writableVectorPosix(r: *Reader, buffer: []std.posix.iovec, data: []const []u8) Error!struct

File

lib/std/Io/Reader.zig:1975

Code

pub fn writableVectorPosix(r: *Reader, buffer: []std.posix.iovec, data: []const []u8) Error!struct { usize, usize } {
    var i: usize = 0;
    var n: usize = 0;
    if (r.seek == r.end) {
        for (data) |buf| {
            if (buffer.len - i == 0) return .{ i, n };
            if (buf.len != 0) {
                buffer[i] = .{ .base = buf.ptr, .len = buf.len };
                i += 1;
                n += buf.len;
            }
        }
        const buf = r.buffer;
        if (buf.len != 0) {
            r.seek = 0;
            r.end = 0;
            buffer[i] = .{ .base = buf.ptr, .len = buf.len };
            i += 1;
        }
    } else {
        const buf = r.buffer[r.end..];
        buffer[i] = .{ .base = buf.ptr, .len = buf.len };
        i += 1;
    }
    return .{ i, n };
}