public int read()

in oss-20190517/src/main/java/com/aliyun/sdk/service/oss20190517/encryption/internal/CipherInputStream.java [61:85]

• 24 lines of code
• 8 McCabe index (conditional complexity)

    public int read(byte[] buf, int off, int target_len) throws IOException {
        if (curr_pos >= max_pos) {
            if (eof)
                return -1;
            int count = 0;
            int len;
            do {
                if (count > MAX_RETRY)
                    throw new IOException("exceeded maximum number of attempts to read next chunk of data");
                len = nextChunk();
                count++;
            } while (len == 0);

            if (len == -1)
                return -1;
        }
        if (target_len <= 0)
            return 0;
        int len = max_pos - curr_pos;
        if (target_len < len)
            len = target_len;
        System.arraycopy(bufout, curr_pos, buf, off, len);
        curr_pos += len;
        return len;
    }