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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 standard library. Public Function

sendFile

Public Function
std.Io.Writer.Discarding.sendFile
pub fn sendFile(w: *Writer, file_reader: *File.Reader, limit: Limit) FileError!usize

Params

Errors

ReadFailed

Detailed diagnostics are found on the File.Reader struct.

WriteFailed

See the Writer implementation for detailed diagnostics.

EndOfStream

Reached the end of the file being read.

Unimplemented

Indicates the caller should do its own file reading; the callee cannot offer a more efficient implementation.

File

Io/Writer.zig:2378
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    pub fn sendFile(w: *Writer, file_reader: *File.Reader, limit: Limit) FileError!usize {
        if (File.Handle == void) return error.Unimplemented;
        const d: *Discarding = @alignCast(@fieldParentPtr("writer", w));
        d.count += w.end;
        w.end = 0;
        if (limit == .nothing) return 0;
        if (file_reader.getSize()) |size| {
            const n = limit.minInt64(size - file_reader.pos);
            if (n == 0) return error.EndOfStream;
            file_reader.seekBy(@intCast(n)) catch return error.Unimplemented;
            w.end = 0;
            d.count += n;
            return n;
        } else |_| {
            // Error is observable on `file_reader` instance, and it is better to
            // treat the file as a pipe.
            return error.Unimplemented;
        }
    }