www.pudn.com > bambam004_source.rar > appack.cs

// 
// aPLib compression library  -  the smaller the better :) 
// 
// C# example 
// 
// Copyright (c) 1998-2004 by Joergen Ibsen / Jibz 
// All Rights Reserved 
// 
// http://www.ibsensoftware.com/ 
// 
 
using System; 
using System.IO; 
 
using IbsenSoftware.aPLib; 
 
class appack 
{ 
    static int ShowProgress(int length, int slen, int dlen, int cbparam) 
    { 
        Console.Write("{0} -> {1}\r", slen, dlen); 
        return 1; 
    } 
 
    static void CompressStream(Stream from, Stream to) 
    { 
        byte[] src = new byte[from.Length]; 
 
        // read file 
        if (from.Read(src, 0, src.Length) == src.Length) 
        { 
            int dstSize = DllInterface.aP_max_packed_size(src.Length); 
            int wrkSize = DllInterface.aP_workmem_size(src.Length); 
 
            // allocate mem 
            byte[] dst = new byte[dstSize]; 
            byte[] wrk = new byte[wrkSize]; 
 
            // compress data 
            int packedSize = DllInterface.aPsafe_pack( 
                src, 
                dst, 
                src.Length, 
                wrk, 
                new DllInterface.CompressionCallback(ShowProgress), 
                0 
            ); 
 
            // write compressed data 
            to.Write(dst, 0, packedSize); 
 
            Console.WriteLine("compressed to {0} bytes", packedSize); 
        } 
    } 
 
    static void DecompressStream(Stream from, Stream to) 
    { 
        byte[] src = new byte[from.Length]; 
 
        // read file 
        if (from.Read(src, 0, src.Length) == src.Length) 
        { 
            int dstSize = DllInterface.aPsafe_get_orig_size(src); 
 
            // allocate mem 
            byte[] dst = new byte[dstSize]; 
 
            // decompress data 
            int depackedSize = DllInterface.aPsafe_depack(src, src.Length, dst, dstSize); 
 
            // write compressed data 
            to.Write(dst, 0, depackedSize); 
 
            Console.WriteLine("decompressed to {0} bytes", depackedSize); 
        } 
    } 
 
    public static void Main(string[] args) 
    { 
        Console.WriteLine("==============================================================================="); 
        Console.WriteLine("aPLib example in C#             Copyright (c) 1998-2004 by Joergen Ibsen / Jibz"); 
        Console.WriteLine("                                                            All Rights Reserved\n"); 
        Console.WriteLine("                                                  http://www.ibsensoftware.com/"); 
        Console.WriteLine("===============================================================================\n"); 
 
        if ((args.Length != 3) || ((args[0] != "c") && (args[0] != "d"))) 
        { 
            Console.WriteLine("Syntax:  appack   
"); 
            return; 
        } 
 
        string inFilename = args[1]; 
        string outFilename = args[2]; 
 
        if (!File.Exists(inFilename)) 
        { 
            Console.WriteLine("Error: unable to find file '{0}'", inFilename); 
            return; 
        } 
 
        try { 
 
            using (FileStream inFile  = File.OpenRead(inFilename), 
                              outFile = File.Create(outFilename)) 
            { 
                if (args[0] == "c") 
                { 
                    CompressStream(inFile, outFile); 
                } else { 
                    DecompressStream(inFile, outFile); 
                } 
            } 
 
        } catch (Exception e) { 
 
            Console.WriteLine("Error: {0}", e.ToString()); 
        } 
    } 
}