private void Test_GenerateTestData()
{
var dirPath = "D:\\TestData";
DirectoryHelper.CreateIfNotExists(dirPath);
FileHelper.Split("D:\\iTestRunner_R1.txt", dirPath);
}
public void Test_CombineFile()
{
var tempMd5 = FileHelper.GetMd5("D:\\iTestRunner_R1.txt");
//var files = FileUtil.GetAllFiles("D:\\TestData");
//var outputFilePath = "D:\\iTestRunner_R1_combine_result.txt";
//FileUtil.Combine(files,outputFilePath);
//var outputMd5 = FileUtil.GetFileMd5(outputFilePath);
Output.WriteLine($"temp-md5:{tempMd5}");
//Output.WriteLine($"new-md5:{outputMd5}");
}
/// <summary>
/// 文件合并
/// </summary>
/// <param name="filePaths"></param>
/// <param name="outFileName"></param>
/// <param name="delete"></param>
/// <param name="change"></param>
private void FileCombine(IList <string> filePaths, string outFileName, bool delete, int change)
{
if (filePaths == null || filePaths.Count == 0)
{
return;
}
short sign = 1;
//int num = 0, tmp;
//if (change < 0)
//{
// sign = -1;
// change = -change;
//}
var keys = Path.GetFileName(filePaths[0]).Split('.');
var total = keys[2].ToInt();
using (FileStream writeStream = new FileStream(outFileName, FileMode.Create))
{
filePaths.Sort();
foreach (var filePath in filePaths)
{
if (filePath == null || !File.Exists(filePath))
{
continue;
}
FileStream readStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
byte[] data = new byte[1024]; // 流读取，缓存空间
int readLen = 0; // 每次实际读取的字节大小
// 读取数据
while ((readLen = readStream.Read(data, 0, data.Length)) > 0)
{
//// 解密逻辑，对data的首字节进行逻辑偏移解密
//if (num == 0)
//{
// num = change;
//}
//tmp = data[0] + sign * (num % 3 + 3);
//if (tmp > 255)
//{
// tmp -= 255;
//}
//else if(tmp<0)
//{
// tmp += 255;
//}
//data[0] = (byte) tmp;
//num /= 3;
writeStream.Write(data, 0, readLen);
writeStream.Flush();
}
readStream.Close();
if (delete)
{
FileHelper.Delete(filePath);
}
}
}
}
/// <summary>
/// 文件切割
/// </summary>
/// <param name="filePath">文件路径</param>
/// <param name="outPutPath">输出文件路径</param>
/// <param name="kbLength">单个子文件最大长度。单位：KB</param>
/// <param name="delete">标识文件分割完成后是否删除原文件</param>
/// <param name="change">加密密钥</param>
private void FileSplit(string filePath, string outPutPath, int kbLength, bool delete, int change)
{
if (filePath == null || !File.Exists(filePath))
{
return;
}
//// 加密初始化
//short sign = 1;
//int num = 0, tmp;
//if (change < 0)
//{
// sign = -1;
// change = -change;
//}
var fileName = Path.GetFileNameWithoutExtension(filePath);
var fileSize = FileHelper.GetFileSize(filePath);
var total = Conv.ToInt(fileSize.GetSizeByK() / kbLength);
using (FileStream readStream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
{
byte[] data = new byte[1024]; // 流读取，缓存空间
int len = 0, i = 1; // 记录子文件累积读取的KB大小，分割的子文件序号
int readLen = 0; // 每次实际读取的字节大小
FileStream writeStream = null;
// 读取数据
while (readLen > 0 || (readLen = readStream.Read(data, 0, data.Length)) > 0)
{
// 创建分割后的子文件，已有则覆盖
if (len == 0 || writeStream == null)
{
writeStream = new FileStream($"{outPutPath}\\{fileName}.{i++}.{total}.bin", FileMode.Create);
}
//// 加密逻辑，对data的首字节进行逻辑偏移加密
//if (num == 0)
//{
// num = change;
//}
//tmp = data[0] + sign * (num % 3 + 3);
//if (tmp > 255)
//{
// tmp -= 255;
//}
//else if(tmp<0)
//{
// tmp += 255;
//}
//data[0] = (byte) tmp;
//num /= 3;
// 输出，缓存数据写入子文件
writeStream.Write(data, 0, readLen);
writeStream.Flush();
// 预读下一轮缓存数据
readLen = readStream.Read(data, 0, data.Length);
if (++len >= kbLength || readLen == 0) //子文件达到指定大小，或文件已读完
{
writeStream.Close(); // 关闭当前输出流
len = 0;
}
}
}
if (delete)
{
FileHelper.Delete(filePath);
}
}
