/// <summary>
/// 准备压缩
/// </summary>
/// <param name="units"></param>
/// <param name="dirPath"></param>
/// <param name="basePath"></param>
private static void Prepare(List <GZipUnit> units, string dirPath, string basePath)
{
foreach (string file in Directory.GetFiles(dirPath))
{
byte[] destBuffer = File.ReadAllBytes(file);
string relativeFileName = file.Replace(basePath, string.Empty);
while (relativeFileName.StartsWith(Path.DirectorySeparatorChar.ToString()))
{
relativeFileName = relativeFileName.Remove(0, 1);
}
GZipUnit gzipUnit = new GZipUnit(relativeFileName, destBuffer);
units.Add(gzipUnit);
}
foreach (string dir in Directory.GetDirectories(dirPath))
{
Prepare(units, dir, basePath);
}
}
/// <summary>
/// GZip单元解码
/// </summary>
/// <param name="buffer">解压后的二进制数组</param>
/// <returns></returns>
private static List <GZipUnit> Decode(byte[] buffer)
{
List <GZipUnit> result = new List <GZipUnit>();
for (int i = 0; i < buffer.Length;)
{
//文件名长度
byte fnLen = buffer[i];
//文件名
byte[] fnBytes = GetSubBytes(buffer, i + 1, fnLen);
string fileName = Encoding.Default.GetString(fnBytes);
//内容长度
UInt32 cLen = BytesToUInt32(GetSubBytes(buffer, i + 1 + fnLen, 4));
//内容
byte[] cBytes = GetSubBytes(buffer, i + fnLen + 5, (int)cLen);
GZipUnit unit = new GZipUnit(fileName, cBytes);
result.Add(unit);
i += (fnLen + 5 + (int)cLen);
}
return(result);
}
