jna_cnv_test.groovy

jna_cnv_test.groovy

// reference 
//  http://www.atmarkit.co.jp/fjava/special/jna/jna_3.html
//  http://www.javainthebox.net/laboratory/JDK1.4/NewIO/Buffer/Buffer.html
//  http://www.techscore.com/tech/J2SE/NIO/answer/2-2.html


@Grab('net.java.dev.jna:jna:3.2.2')
import com.sun.jna.*
import com.sun.jna.ptr.*
import com.sun.jna.win32.*
import java.nio.*

class JnaCnvUtil {
    public static String ByteByReference2String(ByteByReference ref) {
        return ref.getPointer().getString(0);
    }
    
    //String <=> Pointer
    public static Pointer String2Pointer(String source) {
        return new NativeString(source).getPointer()
    }

    public static String Pointer2String(Pointer source) {
        return source.getString(0) 
    }

    //Integer <=> IntByReference
    public static IntByReference Integer2IntByReference(Integer source) {
        return new IntByReference(source) 
    }

    public static Integer IntByReference2Integer(IntByReference source) {
        return source.getValue()
    }

    //String[] <=> Pointer
    public static Pointer StringList2Pointer(List<String> source) {
            String[] sourceStrings = source.toArray(new String[0]);
            StringArray stringArray = new StringArray(sourceStrings);
            return stringArray.share(0);
    }

    public static List<String> Pointer2StringList(Pointer source, final int size) {
            List<String> result = new ArrayList<String>()
            Pointer[] pList = source.getPointerArray(0, size);
            for( Pointer p : pList) {
                     String value = p.getString(0);
                     result.add(value);
            }
            return result;
    }

    //IntBuffer <=> int[]
    public static IntBuffer IntegerList2IntBuffer(List<Integer> source) {
            Integer[] sourceIntegers = source.toArray(new Integer[0]);
            IntBuffer result = IntBuffer.allocate(source.size())
            result.put(sourceIntegers)
            return result
    }

    public static List<Integer> IntBuffer2IntegerList(IntBuffer source, final int size) {
            List<Integer> result = new ArrayList<Integer>()
            for(int i=0;i<size;i++){
                result.add source.get(i) 
            }
            return result
    }

    //IntBuffer <=> int[][]
    public static List<List<Integer>> Array2IntegerTableList(int[][] source,final int rowsize){
            List<List<Integer>> result = new ArrayList<ArrayList<Integer>>()
            for(int i=0;i < rowsize ; i++){
                def list = new ArrayList<Integer>()
                list.addAll(source[i])
                result.add(list)
            }
            return result
    }

    public static IntBuffer IntegerTableList2IntBuffer(List<List<Integer>> source) {
            List<Integer>[] sourceIntegerTableLists = source.toArray(new ArrayList<Integer>[0]);
            IntBuffer result = IntBuffer.allocate(source.size() * source.get(0).size())
            for( List<Integer> sourceIntegerLists : sourceIntegerTableLists) {
                    int length = sourceIntegerLists.size()
                    Integer[] sourceIntegers = sourceIntegerLists.toArray(new Integer[0])
                    sourceIntegers.each{
                        result.put(it)
                    }
            }
            return result
    }

    public static List<List<Integer>> IntBuffer2IntegerTableList(IntBuffer source, final int rowsize ,final int colsize) {
            List<List<Integer>> result = new ArrayList<ArrayList<Integer>>()
            int offset = 0
            for(int i=0;i < rowsize ; i++){
                def list = new ArrayList<Integer>()
                for(int j =offset;j < offset + colsize ;j++){
                    list.add source.get(j) 
                }
                result.add(list)
                offset += colsize
            }
            return result
    }
}

def ptr =JnaCnvUtil.String2Pointer("あああ")
println ptr.dump()
println JnaCnvUtil.Pointer2String(ptr)

def intptr = JnaCnvUtil.Integer2IntByReference(103)
println intptr.dump()
println JnaCnvUtil.IntByReference2Integer(intptr)

def list = ["ああ","いい","うう"]
Pointer ptrlist = JnaCnvUtil.StringList2Pointer(list)
println ptrlist.dump()
println JnaCnvUtil.Pointer2StringList(ptrlist,list.size()).dump()


def intlist = [101,102,103]
IntBuffer intbuffer_list = JnaCnvUtil.IntegerList2IntBuffer(intlist)
println intbuffer_list.dump()
println JnaCnvUtil.IntBuffer2IntegerList(intbuffer_list,intlist.size()).dump()


int[][] inttbl = [
                        [101,102,103],
                        [201,202,203],
                        [301,302,303],
                 ]
println inttbl
def inttbl_list = JnaCnvUtil.Array2IntegerTableList(inttbl,inttbl[0].length)
println inttbl_list.dump()
inttbl_list.each{
    println it
}

IntBuffer intbuffer_int = JnaCnvUtil.IntegerTableList2IntBuffer(inttbl_list)
println intbuffer_int.dump()
println JnaCnvUtil.IntBuffer2IntegerTableList(intbuffer_int,3,3).dump()