Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl.function.foldersmanager;

import java.io.File;

import org.apache.commons.lang3.Range;

import org.gvsig.expressionevaluator.Interpreter;

import org.gvsig.expressionevaluator.spi.AbstractFunction;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.folders.FoldersManager;

public class UniqueTemporaryFileFunction extends AbstractFunction {

    public static final String NAME = "UNIQUETEMPORARYFILE";

    public UniqueTemporaryFileFunction() {

        super(

            "Folders",

            NAME,

            Range.between(1,1000),

            "Return a unique file with the specified relative path to the temporary folder.\n" +

            "The base name of the file is modified to be unique.\n" +

            "The file will be deleted when the application exits.\n" +

            "  "+NAME+"('folder','name.txt')\n",

            "For this call, the return value will have the form:\n" +

            "   <PATH>/folder/name-<HEX1>-<HEX2>.txt" +

            NAME+"({{pathComponents...}})",

            new String[] {

                "pathComponents - relative pathname"

            },

            "File",

            false

        );

    }

    @Override

    public boolean allowConstantFolding() {

        return false;

    }

    @Override

    public Object call(Interpreter interpreter, Object[] args) {

        FoldersManager folderManager = ToolsLocator.getFoldersManager();

        String[] pathComponents = new String[args.length];

        for (int i = 0; i < args.length; i++) {

            pathComponents[i] = getStr(args,i);

        }

        File f = folderManager.getUniqueTemporaryFile(pathComponents);

        return f;

    }

}