lastconnections.java

一个JAVA做的FTP软件,带源码的,可以很好的进行二次开发,,并带有详细说明文件的

                    j++;
                }

                newString[j] = SENTINEL;

                //System.out.println("$$$$$$$$$$$$$");
                //store lastCons data in temp again
                j = 0;

                //while (!(temp[j].equals(SENTINEL))) {
                while(!(lastCons[i + 1][j].equals(SENTINEL)))
                {
                    //newString[j] = temp[j];
                    temp[j] = lastCons[i + 1][j];

                    //temp[j] = lastCons[i + 1][j];
                    //lastCons[i+1][j] = newString[j];
                    //j++;
                    //System.out.println(lastCons[i+1][j]);
                    //System.out.println(temp[j]);
                    //if (temp[j].equals(SENTINEL))
                    //if (lastCons[i][j].equals(SENTINEL))
                    //break;
                    //temp[j] = lastCons[i+1][j];
                    j++;
                }

                //while
                temp[j] = SENTINEL;

                //System.out.println("+-+-+-+-+-+-");
                //then, make adjustments to lastCons
                j = 0;

                //while (!(lastCons[i+1][j].equals(SENTINEL))) {
                while(!(newString[j].equals(SENTINEL)))
                {
                    lastCons[i + 1][j] = newString[j];

                    //System.out.println(lastCons[i+1][j]);
                    j++;
                }

                lastCons[i + 1][j] = SENTINEL;

                //j=0;

                /*
                while (!(lastCons[i][j].equals(SENTINEL))) {

                        temp[j] = lastCons[i+1][j];
                        j++;

                }
                */

                //lastCons[i+1][j] = SENTINEL;
            }

            //if
        }

        //for
        for(int i = 0; i < capacity; i++)
        {
            j = 0;

            while(!lastCons[i][j].equals(SENTINEL))
            {
                //System.out.println(lastCons[i][j]);
                if(lastCons[i][j].equals(SENTINEL))
                {
                    break;
                }

                j++;
            }

            //System.out.println(lastCons[i][j]);
        }

        //***
        if(newConnection)
        {
            writeToFile(lastCons, capacity);
        }

        return lastCons;
    }

    //prepend
    public static String[][] moveToFront(int position, int capacity)
    {
        //make these 2D
        //String[] lastCons = new String[capacity];
        //String[] newLastCons = new String[capacity];
        String[][] lastCons = new String[capacity][JFtp.CONNECTION_DATA_LENGTH];
        String[][] newLastCons = new String[capacity][JFtp.CONNECTION_DATA_LENGTH];

        //System.out.print("--------:");
        //System.out.println(capacity);
        lastCons = readFromFile(capacity);

        //String temp = new String("");
        String[] temp = new String[JFtp.CONNECTION_DATA_LENGTH];

        //String[] lastCons = new String[capacity];
        int j = 0;
        temp[j] = lastCons[position][j];

        while(!(lastCons[position][j].equals(SENTINEL)))
        {
            j++;
            temp[j] = lastCons[position][j];
        }

        j = 0;

        //System.out.println("START");
        while(!(lastCons[position][j].equals(SENTINEL)))
        {
            //System.out.println(lastCons[position][j]);
            j++;
        }

        //System.out.println("END");
        //possible bugfix code?
        /*
        for (int i=0; i<JFtp.CONNECTION_DATA_LENGTH; i++) {
                temp[i] = lastCons[position][i];
        }
        */
        newLastCons = prepend(temp, position + 1, false);

        for(int i = 0; i <= position; i++)
        {
            j = 0;

            //while (!(lastCons[position][i].equals(SENTINEL))) {
            //while (!(lastCons[i][j].equals(SENTINEL))) { 
            while(!(newLastCons[i][j].equals(SENTINEL)))
            {
                //j++;      
                //temp[i] = lastCons[position][i];
                //System.out.println(i);
                //System.out.println(j);
                //System.out.println(newLastCons[i][j]);
                lastCons[i][j] = newLastCons[i][j];
                j++;
            }

            lastCons[i][j] = SENTINEL;
        }

        //for
        writeToFile(lastCons, capacity);

        return lastCons;
    }

    //moveToFront
    public static int findString(String[] findVal, int capacity)
    {
        //BUGFIX: 2D
        //String[] lastCons = new String[capacity];
        String[][] lastCons = new String[capacity][JFtp.CONNECTION_DATA_LENGTH];

        lastCons = readFromFile(capacity);

        for(int i = 0; i < capacity; i++)
        {
            int j = 0;

            while((j < JFtp.CAPACITY) && findVal[j].equals(lastCons[i][j]) &&
                      !(lastCons[i][j].equals(SENTINEL)) &&
                      !(findVal[j].equals(SENTINEL)))
            {
                //System.out.println("start ");
                //System.out.print(lastCons[i][j]);
                //System.out.print(findVal[j]);
                //System.out.println("end");
                j++;

                //if (findVal.equals(lastCons[i]))
                //return i;
            }

            if(findVal[j].equals(lastCons[i][j]))
            {
                //System.out.println("test");
                //System.out.println(lastCons[i][j]);
                //System.out.println(findVal[j]);
                return i;
            }
            else
            {
                //System.out.println("test2");
                //System.out.println(lastCons[i][j]);
                //System.out.println(findVal[j]);
                //System.out.println("NO");
            }
        }

        //if not found, return -1
        return -1;
    }

    //findString

    /*
    //unnecessary?
    public static String[] swap(String a[], int pos1, int pos2) {

            String temp = new String("");

            temp = a[pos2];
            a[pos2] = a[pos1];
            a[pos1] = temp;

            return a;

    } //swap
    */
    private static void init(int capacity)
    {
        //File f = new File(Settings.last_cons);
        try
        {
            FileOutputStream fos;
            PrintStream out;

            fos = new FileOutputStream(Settings.last_cons);
            out = new PrintStream(fos);

            for(int i = 0; i < capacity; i++)
            {
                out.println("null");
                out.println(SENTINEL);
            }

            fos.close();
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }

        //return f;
    }

    //init
    private static void changeFile(String[] oldValues)
    {
        StringTokenizer tokens;

        String[][] newData = new String[JFtp.CAPACITY][JFtp.CONNECTION_DATA_LENGTH];

        //this assumes that capacity will not change
        //should this be set to 9 instead of JFtp.CAPACITY?
        for(int i = 0; i < JFtp.CAPACITY; i++)
        {
            //System.out.println(oldValues[i]);
            tokens = new StringTokenizer(oldValues[i], " ");

            int j = 0;

            while((tokens.hasMoreTokens()))
            {
                newData[i][j] = tokens.nextToken();

                //System.out.println(newData[i][j]);
                j++;
            }

            newData[i][j] = SENTINEL;

            //System.out.print("---->");
            //System.out.println(newData[i][0]);
            //System.out.println(j);
            //for backwards compatibility with versions that
            //don't have SFTP port remembered: enter port 22
            //(which is default) there
            if(newData[i][0].equals("SFTP") && (j == 5))
            {
                String temp = new String("");
                String temp2 = new String("");

                temp = newData[i][4];
                newData[i][4] = "22";

                temp2 = newData[i][5];

                newData[i][5] = temp;

                //temp2 = newData[i][5];
                //newData[i][6] = temp2;
                //newData[i][7] = SENTINEL;
                newData[i][6] = SENTINEL;

                /*
                for (int j=5; j++; j<7) {

                        temp = newData[i][j];
                        newData[i][j] = newData[i][j-1];

                } */
            }

            //if
        }

        //for
        writeToFile(newData, JFtp.CAPACITY);
    }

    //changeFile
}


//LastConnections