private void SplitFileByLength(int length)
{
//Encoding encoding = null;
length = length - 100; //100个字的Buffer
//string str = FileOperationHelper.ReadFileContent(txbFilePath.Text, ref encoding, Encoding.UTF8);
Encoding encoding = FileOperationHelper.GetEncodingType(txbFilePath.Text);
string str = FileOperationHelper.ReadFile(txbFilePath.Text, encoding);
int fileIndex = 1;
do
{
if (str.Length == 0)
{
break;
}
string content = str.Substring(0, Math.Min(str.Length, length));
str = str.Substring(content.Length);
int i = Math.Min(str.IndexOf('\r'), str.IndexOf('\n'));
if (i != -1)
{
content += str.Substring(0, i + 2);
str = str.Substring(i + 2);
}
string newFile = GetWriteFilePath(fileIndex++);
FileOperationHelper.WriteFile(newFile, encoding, content);
rtbLogs.AppendText(newFile + "\r\n");
} while (true);
}
public void TestGetFileEncoding(string path, string encoding)
{
var e = FileOperationHelper.GetEncodingType(path);
Assert.AreEqual(e.ToString(), Encoding.GetEncoding(encoding).ToString());
var txt = FileOperationHelper.ReadFile(path);
Debug.WriteLine(txt);
}
public void TestGetFileEncoding(string path, string encoding)
{
path = GetFullPath(path);
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
var e = FileOperationHelper.GetEncodingType(path);
Assert.AreEqual(e.EncodingName, Encoding.GetEncoding(encoding).EncodingName);
var txt = FileOperationHelper.ReadFile(path);
Debug.WriteLine(txt);
}
private void SplitFileBySize(int maxSize)
{
Encoding encoding = FileOperationHelper.GetEncodingType(txbFilePath.Text);
int fileIndex = 1;
int size = (maxSize - 10) * 1024; //10K的Buffer
var inFile = new FileStream(txbFilePath.Text, FileMode.Open, FileAccess.Read);
do
{
string newFile = GetWriteFilePath(fileIndex++);
var outFile = new FileStream(newFile, FileMode.OpenOrCreate,
FileAccess.Write);
if (fileIndex != 2) //不是第一个文件，那么就要写文件头
{
FileOperationHelper.WriteFileHeader(outFile, encoding);
}
int data = 0;
var buffer = new byte[size];
if ((data = inFile.Read(buffer, 0, size)) > 0)
{
outFile.Write(buffer, 0, data);
bool hasContent = true;
do
{
int b = inFile.ReadByte();
if (b == 0xA || b == 0xD)
{
ReadToNextLine(inFile);
hasContent = false;
}
if (b != -1) //文件已经读完
{
outFile.WriteByte((byte)b);
}
else
{
hasContent = false;
}
} while (hasContent);
}
outFile.Close();
rtbLogs.AppendText(newFile + "\r\n");
} while (inFile.Position != inFile.Length);
inFile.Close();
}
private void SplitFileByLine(int maxLine)
{
Encoding encoding = FileOperationHelper.GetEncodingType(txbFilePath.Text);
string str = FileOperationHelper.ReadFile(txbFilePath.Text, encoding);
string splitLineChar = "\r\n";
if (str.IndexOf(splitLineChar) < 0)
{
if (str.IndexOf('\r') > 0)
{
splitLineChar = "\r";
}
else if (str.IndexOf('\n') > 0)
{
splitLineChar = "\n";
}
else
{
MessageBox.Show("不能找到行分隔符");
return;
}
}
string[] list = str.Split(new[] { splitLineChar }, StringSplitOptions.RemoveEmptyEntries);
var fileContent = new StringBuilder();
int fileIndex = 1;
for (int i = 0; i < list.Length; i++)
{
fileContent.Append(list[i]);
fileContent.Append(splitLineChar);
if ((i + 1) % maxLine == 0 || i == list.Length - 1)
{
if (i != 0)
{
string newFile = GetWriteFilePath(fileIndex++);
FileOperationHelper.WriteFile(newFile, encoding, fileContent.ToString());
rtbLogs.AppendText(newFile + "\r\n");
fileContent = new StringBuilder();
}
}
}
}
