goja-core/src/main/java/goja/core/kits/stream/StreamUtil.java
public static int copy(Reader input, Writer output, int charCount) throws IOException {
        char buffer[] = new char[ioBufferSize];
        int count = 0;
        int read;
        while (charCount > 0) {
            if (charCount < ioBufferSize) {
                read = input.read(buffer, 0, charCount);
            } else {
                read = input.read(buffer, 0, ioBufferSize);
            }
            if (read == -1) {
                break;
            }
            charCount -= read;
            count += read;
            output.write(buffer, 0, read);
        }
        return count;
    }
public static int copy(Reader input, Writer output, int charCount) throws IOException {
        char buffer[] = new char[ioBufferSize];
        int count = 0;
        int read;
        while (charCount > 0) {
            if (charCount < ioBufferSize) {
                read = input.read(buffer, 0, charCount);
            } else {
                read = input.read(buffer, 0, ioBufferSize);
            }
            if (read == -1) {
                break;
            }
            charCount -= read;
            count += read;
            output.write(buffer, 0, read);
        }
        return count;
    }
public static int copy ( Reader input , Writer output , int charCount ) throws IOException { char buffer [ ] = new char [ ioBufferSize ] ; int count = 0 ; int read ; while ( charCount > 0 ) { if ( charCount < ioBufferSize ) { read = input . read ( buffer , 0 , charCount ) ; } else { read = input . read ( buffer , 0 , ioBufferSize ) ; } if ( read == - 1 ) { break ; } charCount -= read ; count += read ; output . write ( buffer , 0 , read ) ; } return count ; }
Copies specified number of characters from reader to writer using buffer.
Copies specified number of characters from reader to writer using buffer .