public int read()

in src/main/java/org/apache/commons/io/input/CharSequenceInputStream.java [293:320]

• 28 lines of code
• 11 McCabe index (conditional complexity)

    public int read(final byte[] array, int off, int len) throws IOException {
        Objects.requireNonNull(array, "array");
        if (len < 0 || off + len > array.length) {
            throw new IndexOutOfBoundsException("Array Size=" + array.length + ", offset=" + off + ", length=" + len);
        }
        if (len == 0) {
            return 0; // must return 0 for zero length read
        }
        if (!this.bBuf.hasRemaining() && !this.cBuf.hasRemaining()) {
            return EOF;
        }
        int bytesRead = 0;
        while (len > 0) {
            if (this.bBuf.hasRemaining()) {
                final int chunk = Math.min(this.bBuf.remaining(), len);
                this.bBuf.get(array, off, chunk);
                off += chunk;
                len -= chunk;
                bytesRead += chunk;
            } else {
                fillBuffer();
                if (!this.bBuf.hasRemaining() && !this.cBuf.hasRemaining()) {
                    break;
                }
            }
        }
        return bytesRead == 0 && !this.cBuf.hasRemaining() ? EOF : bytesRead;
    }