writeAscii() — netty Function Reference

Architecture documentation for the writeAscii() function in ByteBufUtil.java from the netty codebase.

Function java Buffer Telemetry calls 3 called by 1

Entity Profile

Buffer→ Telemetry→ writeAscii() — netty Function Reference

Dependency Diagram

graph TD
  1d39e1e7_9d67_f2e0_0293_3a9560dad824["writeAscii()"]
  920454f6_25f6_4a9b_3d32_9684c3e11f6c["ByteBufUtil"]
  1d39e1e7_9d67_f2e0_0293_3a9560dad824 -->|defined in| 920454f6_25f6_4a9b_3d32_9684c3e11f6c
  a25efb62_fa62_08c5_238f_d23c15a3569b["ByteBuf()"]
  a25efb62_fa62_08c5_238f_d23c15a3569b -->|calls| 1d39e1e7_9d67_f2e0_0293_3a9560dad824
  2efc3489_9dc9_3a22_560a_de6fc08eb9cd["writeAsciiString()"]
  1d39e1e7_9d67_f2e0_0293_3a9560dad824 -->|calls| 2efc3489_9dc9_3a22_560a_de6fc08eb9cd
  7f1641c7_b9b4_6707_af99_bcc059339c29["getBytes()"]
  1d39e1e7_9d67_f2e0_0293_3a9560dad824 -->|calls| 7f1641c7_b9b4_6707_af99_bcc059339c29
  caa94013_56ea_0d52_35d3_88c5b9eb1b1d["writeAsciiCharSequence()"]
  1d39e1e7_9d67_f2e0_0293_3a9560dad824 -->|calls| caa94013_56ea_0d52_35d3_88c5b9eb1b1d
  style 1d39e1e7_9d67_f2e0_0293_3a9560dad824 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

buffer/src/main/java/io/netty/buffer/ByteBufUtil.java lines 1247–1274

    public static int writeAscii(ByteBuf buf, CharSequence seq) {
        // ASCII uses 1 byte per char
        for (;;) {
            if (buf instanceof WrappedCompositeByteBuf) {
                // WrappedCompositeByteBuf is a sub-class of AbstractByteBuf so it needs special handling.
                buf = buf.unwrap();
            } else if (buf instanceof AbstractByteBuf) {
                final int len = seq.length();
                AbstractByteBuf byteBuf = (AbstractByteBuf) buf;
                byteBuf.ensureWritable0(len);
                if (seq instanceof AsciiString) {
                    writeAsciiString(byteBuf, byteBuf.writerIndex, (AsciiString) seq, 0, len);
                } else {
                    final int written = writeAscii(byteBuf, byteBuf.writerIndex, seq, len);
                    assert written == len;
                }
                byteBuf.writerIndex += len;
                return len;
            } else if (buf instanceof WrappedByteBuf) {
                // Unwrap as the wrapped buffer may be an AbstractByteBuf and so we can use fast-path.
                buf = buf.unwrap();
            } else {
                byte[] bytes = seq.toString().getBytes(CharsetUtil.US_ASCII);
                buf.writeBytes(bytes);
                return bytes.length;
            }
        }
    }