public int Init()
{
// 初始化落地文件
file = new FileStream(@"./filetemp", FileMode.OpenOrCreate);
file.Seek(0, SeekOrigin.Begin);
cache = new byte[128][];
for (int i = 0; i < 128; ++i)
{
cache[i] = new byte[72];
}
if (file.Length == 0)
{
// 初始化位图
fileTable = new byte[128];
fileTable[0] = 255;
fileTable[1] = 255;
fileTable[2] = 255;
for (int i = 0; i < 72; i += 9)
{
FileAttribute oneFileAttribute = new FileAttribute();
oneFileAttribute.fileName1 = '$';
int pos = 0;
foreach (byte attribute in oneFileAttribute.ToByte())
{
cache[2][i + pos] = attribute;
++pos;
}
pos = 0;
}
byte[] testFileAttribute = new FileAttribute('F', 'T', 'D', '\0', '\0', 1, 0, 3, 1).ToByte();
for (int i = 0; i < 9; ++i)
{
cache[2][i] = testFileAttribute[i];
}
for (int i = 0; i < 72; i += 9)
{
FileAttribute oneFileAttribute = new FileAttribute();
oneFileAttribute.fileName1 = '$';
int pos = 0;
foreach (byte attribute in oneFileAttribute.ToByte())
{
cache[3][i + pos] = attribute;
++pos;
}
pos = 0;
}
this.fileTable[3] = 255;
this.dataLand();
}
else
{
// 载入位图
fileTable = new byte[128];
file.Read(fileTable, 0, 128);
for (int i = 2; i < 128; i++)
{
cache[i] = new byte[72];
file.Read(cache[i], 0, 72);
}
}
file.Flush();
return(0);
}
public int CreateFile(string parentPath, string fileName, string fileExpend, int fileProperty)
{
if (subFileCount(parentPath) < 8)
{
int currentPos = FindDiskPiece(parentPath);
FileAttribute[] fileAttributes = FindByFullPath(parentPath);
foreach (FileAttribute fa in fileAttributes)
{
if (fa.fileOrDirctory == 1)
{
continue;
}
string tempFileName = "";
tempFileName += fa.fileName1;
tempFileName += fa.fileName2;
tempFileName += fa.fileName3;
tempFileName = tempFileName.Trim();
string tempFileExpend = "";
tempFileExpend += fa.fileType1;
tempFileExpend += fa.fileType2;
tempFileExpend = tempFileExpend.Trim();
if (tempFileName == fileName.Trim() && tempFileExpend == fileExpend.Trim())
{
MessageBox.Show("不能有重复命名。");
return(-1);
}
}
foreach (FileAttribute fa in fileAttributes)
{
if (fa.fileName1 == '$')
{
char[] cffileName = fileName.ToCharArray();
fa.fileName1 = cffileName[0];
fa.fileName2 = cffileName[1];
fa.fileName3 = cffileName[2];
char[] cffileExpend = fileExpend.ToCharArray();
if (cffileExpend.Length > 0 && !String.IsNullOrWhiteSpace(Convert.ToString(cffileExpend[0])))
{
if (cffileExpend.Length == 2)
{
fa.fileType1 = cffileExpend[0];
fa.fileType2 = cffileExpend[1];
}
else
{
fa.fileType1 = cffileExpend[0];
fa.fileType2 = ' ';
}
}
else
{
fa.fileType1 = ' ';
fa.fileType2 = ' ';
}
fa.fileOrDirctory = 0;
fa.isReadOnly = Convert.ToByte(fileProperty);
fa.pieceLength = 1;
for (int i = 2; i < 128; ++i)
{
if (fileTable[i] == 0)
{
fileTable[i] = 255;
fa.beginPiece = Convert.ToByte(i);
for (int j = 0; j < 72; j += 9)
{
FileAttribute oneFileAttribute = new FileAttribute();
oneFileAttribute.fileName1 = '$';
int pos = 0;
foreach (byte attribute in oneFileAttribute.ToByte())
{
cache[currentPos][j + pos] = attribute;
++pos;
}
pos = 0;
}
break;
}
}
break;
}
}
AttributesInCache(currentPos, fileAttributes);
dataLand();
return(0);
}
return(-1);
}