public readrecords(FileStream fs, ifitAlgorithms algo)
{
StreamReader sr = new StreamReader(fs);
this.algo = algo;
while (sr.Peek() != -1)
{
string line = sr.ReadLine();
if (line == "")
{
continue;
}
record r = Get_recordFromFile(line);
if (line[0] == 'A' || line[0] == 'a')
{
if (!algo.reclaimSpace(r, ls))
{
ls.Add(r);
}
}
else
{
deleteRecordFromList(r);
}
}
sr.Close();
}
public void deleteRecordFromList(record r)
{
for (int i = 0; i < ls.Count; i++)//search for record in the list
{
if (r.name.Equals(ls[i].name))
{
algo.addtoavail_list(ls[i]);
string s = '*' + ls[i].name;
ls[i].name = s;
break;
}
}
}
public record Get_recordFromFile(String s)
{
int cnt = 0;
string name = "";
string size = "";
int ptr1 = s.Length, ptr2 = s.Length;
for (int i = 0; i < s.Length; i++)
{
if (s[i] == ',' && cnt == 0)
{
ptr1 = i;
cnt++;
}
else if (s[i] == ',' && cnt != 0)
{
ptr2 = i;
}
}
for (int i = ptr1 + 1; i < s.Length && s[i] != ','; i++)
{
if (s[i] != ' ')
{
name += s[i];
}
}
for (int i = ptr2 + 1; i < s.Length && s[i] != ','; i++)
{
if (s[i] != ' ')
{
size += s[i];
}
}
if (size == "")
{
size = "0";
}
record r = new record(name);
r.size = int.Parse(size);
return(r);
}
public bool reclaimSpace(record r, List <record> ls)
{
foreach (var availRecord in availList)
{
if (r.size <= availRecord.size)
{
for (int j = 0; j < ls.Count; j++)
{
if (availRecord.name == ls[j].name)//remove from the list
{
ls[j] = r;
break;
}
}
availList.Remove(availRecord);
fragmentationSize -= r.size;
return(true);
}
}
return(false);
}
public bool reclaimSpace(record r, List <record> ls)
{
for (int i = availList.Count - 1; i >= 0; i--)
{
if (r.size <= availList[i].size)
{
for (int j = 0; j < ls.Count; j++)
{
if (availList[i].name == ls[j].name)//remove from the list
{
ls[j] = r;
break;
}
}
availList.RemoveAt(i);
fragmentationSize -= r.size;
return(true);
}
}
return(false);
}
public void addtoavail_list(record r)
{
fragmentationSize += r.size;
availList.Add(r);
}
