public void DeleteFile(MFPHandle handle, string filename)
{
FileStream fs = handle.fs;
Assert(fs != null, "The MFPHandle has been CLOSED or something WRONG with it");
Assert(handle.config.ContainsKey(filename), "The file with name '" + filename + "' does NOT EXISTS");
MFPSeek seek = handle.config[filename];
handle.config.Remove(filename);
List <MFPSeek> space = handle.space;
if (space.Count > 0)
{
MFPSeek head = new MFPSeek();
MFPSeek tail = new MFPSeek();
int headIdx = 0;
int tailIdx = 0;
for (int i = 0; i < space.Count; ++i)
{
MFPSeek s = space[i];
if (s.tail == seek.head)
{
s.tail = seek.tail;
head = s;
headIdx = i;
}
if (s.head == seek.tail)
{
s.head = seek.head;
tail = s;
tailIdx = i;
}
}
if (head.tail != 0 && tail.tail != 0)
{
head.tail = tail.tail;
space[headIdx] = head;
space.RemoveAt(tailIdx);
}
if (head.tail != 0 || tail.tail != 0)
{
if (head.tail != 0 && seek.tail == handle.seek_pos)
{
handle.seek_pos = head.head;
space.RemoveAt(headIdx);
}
return;
}
}
if (seek.tail == handle.seek_pos)
{
handle.seek_pos = seek.head;
return;
}
space.Add(seek);
}
private void InsertFile(MFPHandle handle, MFPSeek s, byte[] file, string filename)
{
FileStream fs = handle.fs;
Assert(fs != null, "The MFPHandle has been CLOSED or something WRONG with it");
Assert(!handle.config.ContainsKey(filename), "The file with name '" + filename + "' has EXISTS");
fs.Seek(s.head, SeekOrigin.Begin);
fs.Write(file, 0, file.Length);
handle.config.Add(filename, s);
}
public byte[] ReadFileBytes(MFPHandle handle, string filename)
{
FileStream fs = handle.fs;
Assert(fs != null, "The MFPHandle has been CLOSED or something WRONG with it");
Assert(handle.config.ContainsKey(filename), "The file with name '" + filename + "' does NOT EXISTS");
MFPSeek seek = handle.config[filename];
fs.Seek(seek.head, SeekOrigin.Begin);
byte[] file_byte = new byte[seek.tail - seek.head];
fs.Read(file_byte, 0, file_byte.Length);
return(file_byte);
}
public void AddFileBytes(MFPHandle handle, byte[] file, string filename)
{
List <MFPSeek> space = handle.space;
if (space.Count > 0)
{
for (int i = 0; i < space.Count; ++i)
{
MFPSeek s = space[i];
int slength = s.tail - s.head;
float r = (float)file.Length / slength;
if (r >= MFP_CONFIG_PRIVATE.REUSE_FILE_PERCENT && r <= 1.0f)
{
MFPSeek sf = new MFPSeek()
{
head = s.head,
tail = s.head + file.Length
};
InsertFile(handle, sf, file, filename);
s.head += file.Length;
if (s.head == s.tail)
{
space.RemoveAt(i);
}
else
{
space[i] = s;
}
return;
}
}
}
MFPSeek seek = new MFPSeek()
{
head = handle.seek_pos,
tail = handle.seek_pos + file.Length
};
handle.seek_pos = seek.tail;
InsertFile(handle, seek, file, filename);
}
