private void readChunkHead()

in httpcore5/src/main/java/org/apache/hc/core5/http/impl/nio/ChunkDecoder.java [99:141]
43 lines of code
15 McCabe index (conditional complexity)

    private void readChunkHead() throws IOException {
        if (this.lineBuf == null) {
            this.lineBuf = new CharArrayBuffer(32);
        } else {
            this.lineBuf.clear();
        }
        if (this.endOfChunk) {
            if (this.buffer.readLine(this.lineBuf, this.endOfStream)) {
                if (!this.lineBuf.isEmpty()) {
                    throw new MalformedChunkCodingException("CRLF expected at end of chunk");
                }
            } else {
                if (this.buffer.length() > 2 || this.endOfStream) {
                    throw new MalformedChunkCodingException("CRLF expected at end of chunk");
                }
                return;
            }
            this.endOfChunk = false;
        }
        final boolean lineComplete = this.buffer.readLine(this.lineBuf, this.endOfStream);
        final int maxLineLen = this.http1Config.getMaxLineLength();
        if (maxLineLen > 0 &&
                (this.lineBuf.length() > maxLineLen ||
                        !lineComplete && this.buffer.length() > maxLineLen)) {
            throw new MessageConstraintException("Maximum line length limit exceeded");
        }
        if (lineComplete) {
            int separator = this.lineBuf.indexOf(';');
            if (separator < 0) {
                separator = this.lineBuf.length();
            }
            final String s = this.lineBuf.substringTrimmed(0, separator);
            try {
                this.chunkSize = Long.parseLong(s, 16);
            } catch (final NumberFormatException e) {
                throw new MalformedChunkCodingException("Bad chunk header: " + s);
            }
            this.pos = 0L;
        } else if (this.endOfStream) {
            throw new ConnectionClosedException(
                            "Premature end of chunk coded message body: closing chunk expected");
        }
    }